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Journal articles on the topic 'Hydraulic Machine'
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1
Buriennikov, Yurii, Leonid Kozlov, Oana Rusu, Viktor Matviichuk, Volodymyr Pyliavets, Natalia Semychasnova, and Ioan Rusu. "OPTIMIZATION OF PARAMETERS OF THE MOBILE MACHINE ADAPTIVE HYDRAULIC CIRCUIT." International Journal of Modern Manufacturing Technologies 13, no. 3 (December 25, 2021): 14–21. http://dx.doi.org/10.54684/ijmmt.2021.13.3.14.
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Mobile machine hydraulic circuits tend to adopt electrohydraulics. Such hydraulic circuits are based on controlled pumps, modulated hydraulics, sensors and controllers. This allows adapting the hydraulic circuit operating modes to the changes of external conditions of the machine operation. Application of hydraulic circuits with electrohydraulics in mobile machines allows to use mobile machines efficiently with a high number of removable endangers, increases their performance and improves the quality of performed works. The authors propose an adaptive hydraulic circuit for a mobile machine. The operation process in the adaptive hydraulic circuit in static and dynamic modes is determined by the interaction of the pump controller and pressure differential control valves. The hydraulic system operation stability, its fast response and readjustment are determined by the controller parameters. It has been revealed that the main parameters affecting the dynamic characteristics of the hydraulic system are: throttle area and coefficient of amplifying the pump controller orifice, dampener area and coefficient of amplifying the pressure differential control valve orifice. These parameters affect the stability, controlling and readjustment time in the hydraulic circuit differently. A functional including the values of controlling time , σ controlling and losses in the pump controller was used as an optimization criterion. The optimization has been made according to the developed mathematical model applying the method developed by I. Sobol and R. Statnikov. During the optimization each controller parameter changed on 3 levels. 81 tests were made and the best combination of controller parameters for the optimization criterion was determined. The following hydraulic circuit operation values were reached under the optimal values of parameters = 1.0·10-6 m2, = 1.0·10-3 m, = 1.2·10-6 m2, = 10·10-3 m: = 1.1 с, σ = 32 %, = 0.82 kW that comply with the requirements towards hydraulic circuits of mobile machines.
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Chaudhari, Manjit. "Hydraulic Pipe Bending Machine." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 31, 2021): 3299–304. http://dx.doi.org/10.22214/ijraset.2021.37102.
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The process of pipe bending finds its importance in many industries, instruments, fluids transportation etc. The aim of this research is to design and fabricate a hydraulic jack-based pipe bending machine which has ability to bend pipes used at gas supply industry, while keeping in mind the requirements of a good pipe bending machine to provide high quality bends without defects but at the cost lesser than the existing pipe bending machines available in the marketplace. The fabricated pipe bending machine works on the principle of press bending method to perform the bending operation. The design of the proposed pipe bending machine is based on essential parameters of bending process such as radius and angle of the bend, diameter and thickness of the pipe. The single acting hydraulic jack of 16000 KG load capacity is used to apply the required pressing force to bend a circular pipe having the outer diameter ranging from ½ inch to 2 inches.
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Yalyna, Olga. "RESEARCH OF OPERATING MODES OF A PULSE HYDRAULIC DRIVE OF WORKING BODIES OF AGRICULTURAL MACHINERY." Herald of Khmelnytskyi National University. Technical sciences 309, no. 3 (May 26, 2022): 111–14. http://dx.doi.org/10.31891/2307-5732-2022-309-3-111-114.
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Hydraulic systems are used in almost all branches of agricultural machinery. They are widely used in production – for example, in foundry machines, presses, heavy manipulators, machine tools, works, molding machines for plastics. They play an important role in the operation of equipment designed for the mining and oil industry, in rescue equipment. And, of course, one of the widest areas of application for hydraulics is various kinds of special equipment: excavators and cranes, loaders, aerial platforms, agricultural, warehouse and many other types of machines. The use of hydraulic systems is due to a number of obvious advantages. First of all, they provide the efficiency of moving heavy loads with fine adjustment. Hydraulic systems also have great flexibility to control large and small forces. Another important benefit is reliability: equipment can be protected from overloading with simple pressure relief valves. Compared to the tasks they solve, hydraulic systems are compact and economical. The hydraulic system of any special equipment is a rather complex and precise mechanism. The performance of the machine largely depends on its ideal operation. An analysis of the development of modern foreign mobile machines, including earth-moving, leveling, lifting and transport, for the production of concrete work and soil compaction, agricultural and forestry machines, basic wheeled tractors, etc., revealed a trend towards a growing volumetric hydraulic drive. reciprocating and rotary motion. The author examines the modes of operation of the pulse hydraulic drive of the working bodies of agricultural machines, determines what their advantages and disadvantages, what types and designs of pulse hydraulic drives and how they affect the work process.
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Poll, Hans Günther, José Carlos Zanutto, and Walter Ponge-Ferreira. "Hydraulic Power Plant Machine Dynamic Diagnosis." Shock and Vibration 13, no. 4-5 (2006): 409–27. http://dx.doi.org/10.1155/2006/203834.
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A method how to perform an entire structural and hydraulic diagnosis of prototype Francis power machines is presented and discussed in this report. Machine diagnosis of Francis units consists on a proper evaluation of acquired mechanical, thermal and hydraulic data obtained in different operating conditions of several rotary and non rotary machine components. Many different physical quantities of a Francis machine such as pressure, strains, vibration related data, water flow, air flow, position of regulating devices and displacements are measured in a synchronized way so that a relation of cause an effect can be developed for each operating condition and help one to understand all phenomena that are involved with such kind of machine. This amount of data needs to be adequately post processed in order to allow correct interpretation of the machine dynamics and finally these data must be compared with the expected calculated data not only to fine tuning the calculation methods but also to accomplish fully understanding of the influence of the water passages on such machines. The way how the power plant owner has to operate its Francis machines, many times also determined by a central dispatcher, has a high influence on the fatigue life time of the machine components. The diagnostic method presented in this report helps one to understand the importance of adequate operation to allow a low maintenance cost for the entire power plant. The method how to acquire these quantities is discussed in details together with the importance of correct sensor balancing, calibration and adequate correlation with the physical quantities. Typical results of the dynamic machine behavior, with adequate interpretation, obtained in recent measurement campaigns of some important hydraulic turbines were presented. The paper highlights the investigation focus of the hydraulic machine behavior and how to tailor the measurement strategy to accomplish all goals. Finally some typical recommendations based on the experience obtained on previous diagnostic reports of Francis turbines are performed in order to allow a better and safe operation of these power plant units.
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Zhang, Xiao Dong, and Jin Jin Zhang. "Dynamic Design of Six-Station Automatic Hydraulic Stretching Machine." Key Engineering Materials 522 (August 2012): 256–59. http://dx.doi.org/10.4028/www.scientific.net/kem.522.256.
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Hydraulic stretch forming is a very important technology. Punch press has achieved multi-station automatic processing in the press area, which has greatly improved the efficiency. However, the main domestic stretching machine is single-stretching hydraulic machine at present. Compared with punch press, hydraulic stretching machines take less space and have better security, but they make less efficiency and have lower degree of automation. Hence, in order to take the advantage of hydraulic stretching machines and enhance the automation level, studies on multi-position automatic stretching machine occupies an important position. This paper proposes a design scheme of Six-station Automatic Hydraulic Stretching Machine (SAHSM) according to the practical production. The overall 3D structure of SAHSM is designed based on Solidworks to prove the theoretical possibility of the program. Then modal analysis is operated based on FEA of the key components of stretching machine module to improve reliability of the product and overcome the disadvantage of the traditional checking method, the first two-order modes are obtained to prove the impossibility of the resonance. At last, ADAMS-based virtual prototype is analyzed to demonstrate the feasibility and effectiveness of the SAHSM dynamic design proposed in this paper
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Zhong, Xiang Qiang, and Li Dong Liang. "Mechanical-Hydraulic Coupling Simulation for Hydraulic Excavator Working Mechanism." Advanced Materials Research 538-541 (June 2012): 494–97. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.494.
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Hydraulic excavator is a typical and complicated engineering machine by combination of mechanical, control and hydraulic system. It is very important for coupling analysis by use of multiple simulation tools. Hydraulic excavator mechanical model was constructed based on Pro/E 4.0. Virtual prototype of hydraulic excavator was finished by use of ADAMS interface function and carried on a lot of kinematics and dynamics simulation analysis. Hydraulic cylinder circuit was derivated based on ADAMS/Hydraulics. Working principle of bucket arm hydraulic cylinder was analyzed. Mechanical and hydraulic simulation of bucket rod hydraulic cylinder was finished. Bucket rod hydraulic cylinder velocity was obtained. Simulation results show coupling simulations have certain theory value and practical significance. They can provide evidence for trial and optimization of physical prototype.
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Jin, Sui Ying, Guang Zhen Cheng, and Yu Jing Jia. "Single Hydraulic Prop Disassembly Machine." Applied Mechanics and Materials 201-202 (October 2012): 804–7. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.804.
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This paper introduces coal mine single hydraulic prop repairing actuality and a type of Special disassembly machine using to disassemble single hydraulic prop. Describes the main components of the machine, it have the main motor, reducer, rotating hydraulic chucks, remove column cylinder, fixed hydraulic clamp, disassembly valve device. Discuss its composing structure, work principle, machine process, main specialty, the technical problem what this machine can solve and using this machine for attainability purpose. Point out its advantage: operation convenience, reduce the labor intensity of workers, saving auxiliary time, increasing efficiency, reducing shock and prolonging life.
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Yu, Hao Yang, Jing Lin Tang, and Jing Hu. "Research on Hydraulic System of Speed Forging Hydraulic Machine." Applied Mechanics and Materials 192 (July 2012): 123–27. http://dx.doi.org/10.4028/www.scientific.net/amm.192.123.
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In recent years, industrial technology in China continues developing fast, and this has put forward higher requirements for China's forging equipment. The development international direction of the forging equipment is multi-bit, high-speed and large-set, which leads to the combination of a number of technologies such as hydraulic, pneumatic, electronic, mechanization and detection. However, China's forging press is still at a relatively low level. The organically combination of CNC system with the computer, network, automated warehouses, automatic mold change systems and industrial robots has made the development of the manufacture more and more intelligent as well as its technology level more and more intelligent. In order to occupy a place in the international arena, it is imminent to vigorously develop China's forging equipment. As high speed forging hydraulic machine occupies a very important position in the whole forging system, and the requirement on the dimensional accuracy and productivity of industrial products is getting higher and higher in modern society. This paper introduces the analysis and researches on the hydraulic system of high speed forging hydraulic machine, which is also the difficult and hot point of social researches.
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Li, Yu, Yan Jun Liu, and Ji Bin Liu. "Research on Hydraulic Servo Wobble Board Wave Machine." Advanced Materials Research 694-697 (May 2013): 560–64. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.560.
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Wave machine is one of the necessary laboratory equipments to optimize the structures and devices in the field of marine engineering. For the purpose of putting forward a new hydraulic servo wobble board wave machine system, we designed the mechanical structure, and carried out the mathematical model of the servo system. The MATLAB analysis result showed that the wave machine was reliable. This research therefore provided fundamental experience for the manufacture of the wave machines and the marine engineering laboratory equipments, and also worked as a reference for the establishment of the other hydraulic servo systems.
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Sluce, Patricia, and Manoel Henrique Reis Nascimento. "Risk Assessment Proposal In HydrauliC Presses With Fuzzy Logic." International Journal for Innovation Education and Research 9, no. 5 (May 1, 2021): 349–68. http://dx.doi.org/10.31686/ijier.vol9.iss5.3101.
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The aim of this study was to evaluate the safety level of industrial machines, in particular hydraulic press. The dissertation used hydraulic presses as the object of study. The research instruments used were machine safety analyzes based on normative items pre-established in ABNT NBR: 12100, possible accidents that these machineries can cause. The results show that hydraulic presses cause many accidents, in some situations dying. Through Annex B of ABNT NBR 14153: 2013, there are 4 risk categories for machinery, the greater the degree of risk, the more unsafe the machine is. The appraiser's experience is very important to analyze the machine and reach the level of risk level before and after the adjustment. Finally, it appears that the machine analyzed in this study was at risk level 3, after analysis and adaptations the same machine was at risk level 1, totally acceptable to maintain the operator's safety level.
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Jasiński, Ryszard. "Influence of Type of Material on Performance of Hydraulic Components in Thermal Shock Conditions." Solid State Phenomena 183 (December 2011): 95–100. http://dx.doi.org/10.4028/www.scientific.net/ssp.183.95.
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During the start-up of a hydraulic system in low ambient temperatures an incorrect operation may occur. The principles and conditions of safely operating hydraulic driven machines and devices are essential to designers and operators. For this reason the author of this article has conducted a series of tests on hydraulic components and systems in thermal shock conditions (cooled-down components were supplied with hot working medium). In such conditions, the initial parameters of the hydraulic components and systems determine their correct operation. During the start-up of a hydraulic system in thermal shock conditions, elements of hydraulic components warm up in a non-uniform way, due to various material properties and shapes of parts. Differences in clearances between elements and may lead to the faulty performance of hydraulic components and machine break-down. The selection of appropriate materials for various hydraulic component parts should increase machine safety during start-up in thermal shock conditions.
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Kinkhabwala, Hetav, V. M. Bhojawala, Saumil Desai, and D. V. Patel. "Design of Hydraulic Biomass Briquette Machine." IOP Conference Series: Materials Science and Engineering 1258, no. 1 (October 1, 2022): 012040. http://dx.doi.org/10.1088/1757-899x/1258/1/012040.
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In many of our developing countries, we face many problems regarding agro-waste. If the wastes are not managed then there will be increased in the quantity of waste. In order to manage these wastes, solutions are required and one of the solution is discussed here. The present study discusses about the hydraulic briquette line which is used to make briquettes. This hydraulic briquette line basically consists of three equipment’s a shredder machine, a screw conveyor and a hydraulic briquette machine. Because of good characteristics of sugar-cane bagasse such as low ash content compared to coal, lignin cells are present which acts as a binder, etc., it has been used for making briquettes. Bagasse having long tissues, it is first cut into small parts with the help of shredding machine. These cut bagasse is conveyed to the hydraulic briquette machine with the help of screw conveyor. This conveyed bagasse is compressed in hydraulic briquette machine with the help of hydraulic cylinders. This paper discusses the detailed design of all three equipment i.e. a hydraulic briquette machine, a screw conveyor and a shredding machine.
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Feriadi, Indra, Ariyanto Ariyanto, Fajar Aswin, and M. Rivai. "PERBAIKAN MESIN UNTUK MENINGKATKAN PELAYANAN BENGKEL PELABUHAN PERIKANAN NUSANTARA KECAMATAN SUNGAILIAT KABUPATEN BANGKA." Jurnal Pengabdian Masyarakat Polmanbabel 2, no. 02 (September 19, 2022): 51–57. http://dx.doi.org/10.33504/dulang.v2i02.250.
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The service of Pelabuhan Perikanan Nusantara Sungailiat workshop to fishermen was disrupted due to reduced machine availability caused by the failure of lathes, hydraulic press, drills, and grinders. This project aims to repair machine damage, so machine availability increases and workshop services return to normal.. The implementation method is carried out with corrective maintenance procedures to identify and fix the cause of damage or failure in a failed or damaged system. To verify the types of problems affecting machine’s condition using the Six Sigma DMAIC (Define-Measure-Analyze-Improve) methodology and why-why analysis. The results indicate that lathes, hydraulic presses, drills, and grinders can function well. Even though the hydraulic press machine can perform to press the product, it has not returned to the factory standard. Overall the machines can be used to provide repair services for fisherman boat engine tools/components and fishing gear. It is necessary to build a preventive maintenance system and the performance parameters of these machines so that their condition is always maintained and damage does not recur.
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Li, Yun, Jin Wei Fan, Xing Li Gao, and Xiao Feng Wang. "Design of Hydraulic System of Sway Machine Based on Electro-Hydraulic Proportional Control Technology." Advanced Materials Research 510 (April 2012): 34–38. http://dx.doi.org/10.4028/www.scientific.net/amr.510.34.
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According to the problems of hydraulic system of sway machine, such as commissioning and maintenance are inconvenient, impact of change direction is big, system speed is slow, production efficiency is low, etc. It used electro-hydraulic proportional control valve to improve design in hydraulic system of sway machine. Application of electro-hydraulic proportional control valve has realized automatic adjustment of the hydraulic motor speed; it is effective to solve variable speed movement of sway machine frame and no impact of changing direction smooth. Commissioning and maintenance of sway machine are more convenient, and it improves performance of sway machine.
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Qi, Xi Juan, Zhi Ying Qin, and Yue Jing Zhao. "Dynamic Characteristics Investigation on Hydraulic System of Array Nail Machine Based on Simulink." Advanced Materials Research 694-697 (May 2013): 7–10. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.7.
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The power bond graph of hydraulic array nail machine was built on the basis of analyses on its hydraulic system and actual working cases. Dynamic model of array nail machine hydraulic system was built. At the same time, making use of Simulink, dynamic simulation of hydraulic system of array nail machine was carried out. Influence law of primary technology parameters on dynamic characteristics of the hydraulic system was expounded. The simulation results will provide theory bases for performance analysis and optimal design of array nail machine hydraulic system.
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Sidorenko, V. S., V. I. Grishchenko, S. V. Rakulenko, M. S. Poleshkin, and D. D. Dymochkin. "Study on oil pilot circuit of adaptive hydraulic drive of tool advance in mobile drilling machine." Vestnik of Don State Technical University 19, no. 1 (April 1, 2019): 13–23. http://dx.doi.org/10.23947/1992-5980-2019-19-1-13-23.
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Introduction. An adaptive hydraulic drive of the tool advance in a mobile drilling machine is studied on the example of the URB-2.5 installation. A typical technological cycle of the mobile drilling machine is considered; the performance criteria are defined. An original design of the adaptive hydraulic drive is proposed on the basis of the analysis. Adaptation of the hydraulic drive of the tool advance is carried out using an adjustable volumetric hydraulic motor with a hydraulic control circuit under discontinuous loads on the tool during the drilling process.Materials and Methods. Through a preliminary computational experiment in the Matlab Simulink program, the following parameters of the control loop devices were determined: a hydromechanical sensor and a hydraulically controlled valve, on the basis of which the experimental setup was implemented. The performed multifactor experiment allowed identifying the processes in the original hydraulic control circuit of the hydraulic motor under various modes of tool loading.Research Results. The kinematic and power characteristics of the hydromechanical system of a mobile drilling rig, the hydraulic control effect on the settings of the hydraulic control circuit devices were obtained and determined. The results enabled to specify the rational ranges of the hydromechanical system operation for a typical work cycle.Discussion and Conclusions. The results obtained can be used to create hydraulic systems of new drilling machines with various characteristics. The application of the developed techniques of research and processing of their results will reduce the time and costs involved in designing adaptive hydraulic systems for mobile technological machines, creating prototypes and conducting commissioning procedures.
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Amien, Fiqri Ibrahim, Danny M. Gandana, Nasril Nasril, Dwi Astharini, and Ahmad Husin Lubis. "Optimization of Hydraulic Servo Parameter for Semi-Solid Machine using Aerotech A3200." JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI 4, no. 2 (January 31, 2018): 61. http://dx.doi.org/10.36722/sst.v4i2.258.
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<p><em>Abstract</em><strong> </strong>– <strong>Hydraulics machines are important parts in semi solid metal forging machine, to form the workpiece by pressing. Semi-solid machine positioning movements are required to have a high accuration, to get the high accuracy of the movement system a servo hydraulic control is added ,which consist of servo valve and digital controller (Aerotech A3200). The digital control parameters (kpos, kp, ki) are used to enhanced the hydraulic movement. To get the effect of the control parameters of the plant (hydraulic servo), a mathematical approach is used for simulation in matlab. In this research, study was done by optimize kp and ki parameters of the control system. Prior to the optimization, simulation was conducted using matlab. Where the simulated testing is using the input unit (step) and frequency (bode) to predict the circumstances that occurred to the plan which is then compared with experimental results. a step response was simulated in matlab to analyze the error of the hydraulic system. Having obtained the minimum error from adjusting kp and ki in matlab, a trend graphic error was used as a guideline to adjust parameter in actual system. The last step is to implement and adjust kp/ki in actual system and measure the real position error.Based on this research, it concluded that the error before adjustment are 0.6118-1.2642 mm for autotune parameter kp 3500000, ki 50000. The result of average error in this experiments after adjustment are 0.017-0.166 mm for parameter kp 250000, ki 10000.</strong></p><p> </p><p><strong><em>Keywords</em></strong><em> - Hydraulic Servo, Aerotech A3200, Step response, Bode plot, Semi-Solid Machine</em>.</p>
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Wang, Zhi Wei, Lu Sun, and Jing Hui Li. "The Development of Hydraulic Control System for Large Highland Hydraulic Intelligent Pesticide Spraying Machine." Advanced Materials Research 945-949 (June 2014): 968–71. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.968.
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In this paper, we research and develop a new machine called large highland hydraulic intelligent pesticide spraying machine. The pesticide spraying machine adopts hydraulic electric control technology, and adapts to all tall or short crops for pesticide spraying. The machine employs large intelligent computer control technology, and adjusts the spraying dose according to the pest density measured by intelligent sensors. Furthermore, the machine adopts the technology of self-filter and dilutes the pesticide with absorption water automatically. This paper presents hydraulic control system, and puts forward the hydraulic control principle of the walking part, the hydraulic control principle of the work part and main technical parameters.
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Wan, Yi, Qi Bo Cai, and Huan Wang. "The Research on Intelligent Control Method for EHP System." Advanced Materials Research 580 (October 2012): 12–15. http://dx.doi.org/10.4028/www.scientific.net/amr.580.12.
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Optimized machine learning algorithm is applied to control modeling of high-speed electric-hydraulic proportional system of high nonlinear in this paper, a identification model of high-speed electric-hydraulic proportional system is built based on support vector machines, fusion intelligent method of dynamic self-adaptive internal model control and predictive control is realized for high-speed electric-hydraulic proportional control system. Internal model and inverse controller model are online adjusted together. Simulation shows the satisfactory tracking effect by intelligent technology of dynamic self-adaptive internal control and predictive control based on the support vector machine, the dynamic characteristic is greatly improved by the intelligent control strategy for high-speed electric-hydraulic proportional control system, good tracking and control effect is reached in condition of high frequency response. It provides a new intelligent control method for high-speed electric-hydraulic proportional system.
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Du, Qiulei, and Lin Jin. "Improved Design of Hydraulic Bending Machine." Asian Journal of Chemistry 26, no. 11 (2014): 3347–50. http://dx.doi.org/10.14233/ajchem.2014.17523.
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McIlraith, A. H., and M. T. Clarkson. "A novel hydraulic force standard machine." Measurement Science and Technology 13, no. 12 (November 4, 2002): 1903–9. http://dx.doi.org/10.1088/0957-0233/13/12/314.
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Haluza, M., F. Pochylý, and V. Habán. "Hydraulic machine with non-uniform cascade." IOP Conference Series: Earth and Environmental Science 15, no. 3 (November 26, 2012): 032029. http://dx.doi.org/10.1088/1755-1315/15/3/032029.
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Darsht, Ya A., and A. M. Filippov. "Simulation of hydraulic machine-tool drives." Russian Engineering Research 32, no. 5-6 (May 2012): 491–95. http://dx.doi.org/10.3103/s1068798x1205005x.
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Kaithari, Dr Dinesh Keloth. "Hydraulic Jack operated Hose Crimping Machine." International Journal of Students' Research in Technology & Management 3, no. 8 (November 5, 2015): 455–58. http://dx.doi.org/10.18510/ijsrtm.2015.385.
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The present paper deals with developing of a crimping machine that can crimp hydraulic hoses with its fitting without the use of electricity. Detailed literature review indicates the fabrication of crimping machine that operates with electricity that inspired the authors to develop a hydraulic crimping machine that works without electrical power. Such a crimping machine is very useful when the rig is in movement and suitable for emergency crimping work in order to avoid shutdown time.The author has used Autodesk inventor software for designing critical components of the machine and obtained safety factor more than one for all the critical components. Safety factor less than one leads to the unsafe working condition of the critical parts. Fabrication of the whole assembly has been completed successfully for the required crimping for a hose size of 19.05 mm. The crimping machine has been tested successfully for crimping the required hose size. The design of the machine can be altered so that it can accommodate different die sizes in order to crimp hoses of different sizes.
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Borovin, Gennady Konstantinovich, and Veniamin Vadimovich Tkachuk. "About the works of modeling and designing a pump-turbine system in pumped-storage power plants (review)." Keldysh Institute Preprints, no. 9 (2022): 1–22. http://dx.doi.org/10.20948/prepr-2022-9.
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The paper presents an overview of research in the world on the design and creation of pumped hydroelectric energy storage with hydraulic machines having optimal characteristics according to the principle of operation of reversible pump turbines, optimization of their flow part. Special attention was paid to the work on the study of the operation of the hydraulic machine in pumping and turbine modes. As the study of publications has shown, active research is being conducted abroad on the design and creation of hydroelectric power plants with hydraulic machines having optimal characteristics. When designing hydraulic machines, various mathematical modeling systems are used. As international experience shows, the study of hydraulic machines and, in particular, the pump-turbine, using computational fluid dynamics tools, for example, CFD modeling is becoming increasingly widespread.
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Shan, Gen Li, Wen Xue Liu, and Hong Bo Chen. "The Optimization Design of New Type F-Nail Nailing Machine." Advanced Materials Research 311-313 (August 2011): 1564–68. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1564.
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Welded structure is usually used in current nailing machines. When a nailing machine was used for a period of time, the base of the machine was deformed, so products produced with the machines become waste. The reason for these problems is that the design of window shape around the body column plate is unreasonable, so the plate often cracks. In addition, the hydraulic system in current nailing machines is unreasonable too, which makes production less efficient. Aiming the current problems of the nailing machine, finite element analysis software ANSYS is used to analysis and find the machine’s stress concentration areas. According to the analysis results, the shape and size of these areas are re-designed, which has the minimum area stress and deformation. The welded machine body is changed into a casted one, and the other modules are also re-build, all of which make the machine has longer service life. Through the process analysis, the hydraulic system is re-designed too, which improves the equipment productivity greatly.
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Sutisna, Nanang Ali, and Muhammad Munajad. "PERHITUNGAN SISTEM HIDROLIK UNTUK PENGGERAK PISAU PADA MESIN PENGHAPUS MARKA JALAN." Journal of Mechanical Engineering and Mechatronics 5, no. 2 (October 16, 2020): 122. http://dx.doi.org/10.33021/jmem.v5i2.1250.
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<p>One of very important and vital tool in road marking is road mark erasing machines. In general, the machine used to repair road markings is a road marking erasing machine that is pushed manually. However, this machine has a disadvantage that requires a long time in the process of erasing the road marking, so making it less efficient. Therefore, the truck road mark erasing machine is one of the options to replace the erasing machine that is pushed manually. The machine uses a grinding system with a vertical blade eraser position and hydraulic power to drive the blades as it is able to withstand shock loads and thrust upwards due to the removal process, having overload protection, and the size of components are not large. The study started with doing observation to the existing manual erasing machine, then determining the required blades and calculating as well as selecting the required components of the hydraulic system. Based on the calculation, the blade specification was obtained and selected, i.e <em>surface milling cutter</em> of type WFX12200R from Sumitomo Electric Hardmetal Corporation having rotation speed 750 rpm, hydraulic motor from Danfoss of type OMR-80 having torque 136 Nm dan displacement 80.3 cc/rev., and using hydraulic pump from Parker of type 0210 having displacement 21 cc/rev. From the test result in the field, this machine is three times faster than the manually pushed machine, less number of the blade used, and the engine as a resource on the machine is more durable. <strong></strong></p>
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Lemeshko, M. A., A. B. Kozhemyachenko, and I. T. Khanikadze. "Research stand for studying the hydraulic drive of adaptive drilling machines." IOP Conference Series: Earth and Environmental Science 1045, no. 1 (June 1, 2022): 012135. http://dx.doi.org/10.1088/1755-1315/1045/1/012135.
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Abstract The work relates to mining, in particular to machines used in mining. The article is devoted to the improvement of rotary type drilling machines and methods for investigating the effectiveness of drilling machines. The research complex is described in detail - a stationary stand for the study of rotary drilling, for the study of hydraulic-driven drilling machines. The research complex is made on the basis of a commercially available drilling machine “UBG.00” and allows you to carry out studies of rotary-type drilling machines used in geological exploration, mining, drilling technological wells and experimental drilling machines with adaptation properties. The stand allows, within the limits of regulation, to change drilling modes, to investigate the effect on the process of adaptation of the strength of the drilled rock, blunting of the cutting tool, to investigate power and dynamic characteristics. Adaptation is performed by redistributing the supplied power between the torque and the feed force. The description of the stand design is given, the technical characteristics of a hydraulic-driven drilling machine are given. The limitations adopted during experimental studies, taking into account the characteristics of the hydraulic drive, are formulated. It is shown that in an experimental adaptive drilling machine, the throttle elements of the hydraulic drive have external control and are programmatically controlled to change drilling modes and control methods. External control is performed by a programmable controller and allows drilling in various modes: “free feed”, “forced feed”, “drilling at constant speed”, “adaptive drilling” and others.
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Cheng, Guang Zhen, and Xu Qin Chen. "Special Honing Machine for Cylinder Internal Hole." Applied Mechanics and Materials 101-102 (September 2011): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.33.
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The special honing machine is used in the precision machine of the monomer hydraulic prop cylinder internal hole surface. The main revolving movement is driven by motor, the reciprocating linear motion is actuated by hydraulic ram. Honing machine consists of three parts, mechanism, the hydraulic system and the electric control system. The work principle and the processing process, the interlock relation between movements and the straight line feed motion velocity modulation method of this machine were discussed in this study. The special honing machine designed for the monomer hydraulic prop cylinder is convenient and easy for person to operate, and has high efficiency. The reciprocating linear motion driven by hydraulic ram is steady when direction is changed. It is convenient to change speed, and has advantageous of enhancement processing surface quality.
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Feng, Gang, and Chao Ge Zhang. "Development Overview and Direction of Energy-Saving Technology on Plastic Injection Molding Machine." Applied Mechanics and Materials 178-181 (May 2012): 109–12. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.109.
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The main energy-saving method of injection molding machine is that variable-frequency technology, variable pump system, servo control technology or energy accumulator is used to improve the hydraulic system and the efficiency of effective energy used on a hydraulic-driven system. At present, a larger development has been achieved in the injection molding machine energy-saving technology, but there are still some shortcomings, in order to better promote the research and development of energy-saving technology of injection molding machines, the characteristics of various energy-saving means of plastic injection molding machines is summarized and on this basis that the development direction of energy-saving technology of injection molding machines is put forward.
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Liu, Hua Gang, Rong Xue Li, and Xiang Yang Liu. "Hydraulic Riveting Machine Hydraulic System Design in Automobile Beam Production Line." Advanced Materials Research 507 (April 2012): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amr.507.162.
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The purpose of this paper is to simulate the riveting process, test a new device by the finite element method , study the riveting process of the mechanical behavior. Through numerical simulation, the various characteristics of the selected materials, in accordance with these measured parameters, did some statistical analysis, and design the whole hydraulic riveting machine hydraulic system according to the automobile beam line, then test. Finally, the hydraulic riveting machine hydraulic system for automobile beam production line hydraulic system has great advantages.
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Hwang, Yunn Lin, Thi Na Ta, and Cao Sang Tran. "Dynamic Analysis and Control of Hydraulic Machine System and Industrial Robotic Manipulators." Applied Mechanics and Materials 883 (July 2018): 1–7. http://dx.doi.org/10.4028/www.scientific.net/amm.883.1.
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Dynamic control on hydraulic machine system and kinematic control on industrial robotic manipulators are two studied topics in this research. The main objective of this study is to analyze dynamic, forward kinematic and inverse kinematic on a couple of mechanical systems and hydraulic mechanical systems in order to control these machines. The characteristics of hydraulic and manipulator robot parameters are firstly calculated by using dynamic theories. In the former topic, we perform an example on CNC machine tools which is designing a hydraulic controller to move a cutting tool along a circular path. Dynamics analysis, forward kinematics and inverse kinematics of industrial robotic are archived in the latter topic. Two experiments were also performed on RRR and RRRRRR manipulators by analyzing the inverse kinematic equations to make these robots follow the desired trajectories. This study takes innovations and achieves control improvement in different systems with optimization controller or trajectory planning.
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Dobrovolný, Martin, Vladimír Habán, Jana Tancjurová, and Jan Zbavitel. "An Investigation of Viscous Torque Loss in Ball Bearing Operating in Various Liquids." Water 13, no. 10 (May 18, 2021): 1414. http://dx.doi.org/10.3390/w13101414.
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The limited functionality of seals that are used in hydraulic machines to prevent the liquid from leaking into the bearings may result in decrease in machine efficiency and reliability and may cause an accident of the whole hydraulic machine. However, not every damage of seals must result in a shutdown of the whole machine. In case of partially or fully flooded bearings, the machine can temporarily operate with significantly increased input power and with lower efficiency. Such a limited operation of the machine shortens its lifetime and is accompanied by the presence of torque loss on the shaft. The measurement of torque loss can be helpful during the design process of new machines as well as for an analysis of hydraulic losses and efficiency of prototypes. Moreover, the real-time measurement of torque loss can be used for remote online monitoring of hydraulic machines. The aim of this paper is to present primarily an experimental investigation of the viscous torque loss for ball bearings submerged into liquid. The CFD simulation is also included to distribute the total torque loss between the hub and the bearing. The main goal is to modify the drag coefficient, respectively the friction loss coefficient in SKF’s and Palgrem’s empirical model. The new coefficients may provide a prediction of torque loss in the fully flooded bearings which is not possible with existing models. The torque loss characteristics are determined for specific ball bearings too. In contradiction to partially flooded bearing situation, it is obvious from a experiment, that some coefficients in Palgrem’s model and SKF model are dependent on revolutions when bearings are fully flooded. The experimental investigation of viscous torque loss are carried out for various types of ball bearings, all fully submerged into two various liquids, i.e., oil and water.
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Ju, Cai Xia, and Feng Gang Li. "The Analysis and Improvement of Hydraulic Control System of Sealant-Spreading Machine." Applied Mechanics and Materials 110-116 (October 2011): 2206–9. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2206.
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This paper introduces the composing and the principle of hydraulic control system of Sealant-spreading machine _ a specific machine for insulating-glass made. It analyzes the matters of the hydraulic system that often appear on operation, and implements the methods of improvement to hydraulic oil, hydraulic valves, etc hydraulic system and its control circuit system. The improved methods not only reduce the production cost, but also improve the equipment operation stability. Practice shows that these schemes are effective and feasible.The improvement of hydraulic control system not only fulfils the technology demand of Sealant-spreading Machine, but also stabilizes the performance much more.
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Kaverzina, A. S., A. S. Lunev, I. V. Karnaukhov, M. D. Pankiv, and I. V. Andreychikov. "Performance improvement methods of hydroficated machine under refrigeration." Journal of Physics: Conference Series 2094, no. 4 (November 1, 2021): 042087. http://dx.doi.org/10.1088/1742-6596/2094/4/042087.
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Abstract In this paper, the problem of the influence of climatic conditions on the performance of a Hydraulic gear is considered. The importance of the work is due to the fact that the methods for solving the problem are proposed, namely, the use of preheating for a Hydraulic gear and an internal combustion engine under refrigeration. The use of hydrofected self-propelled vehicles in the northern regions in winter is considered. The factors determining the technical and economic indicators of hydrofected machines are revealed. The influence of negative temperature on the physical and mechanical properties of hydraulic equipment materials is also considered. Three main directions have been identified in which temperature affects the hydraulic drive. An experiment was conducted in which the dependence of the performance of the machine was revealed using a preheating device for the working fluid and without the device.
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Li, Rong. "Design and Research of Hydraulic Station of Hydraulic Tire Curing Press." Advanced Materials Research 507 (April 2012): 172–75. http://dx.doi.org/10.4028/www.scientific.net/amr.507.172.
Full textAbstract:
Analyzes the change of hydraulic pressure and flow rate during the opening/closing and curing processes in the hydraulic system of hydraulic tire curing machine and proposes a new design of the hydraulic station. By using three groups of motors-variable piston pump to work independently, the new hydraulic station can reduce machine downtime. Through using accumulator to keep pressure and delaying switching time of the valve to gradually release pressure, the new hydraulic station solves the problem of the severe impact caused by pressure relief and improve the safety and relia-bility.
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Ryzhko, Nikolay, Sergey Ryzhko, and Sergey Khorin. "ENERGY SAVING WITH MULTI-SUPPORT IRRIGATION SPRINKLING MACHINES." Melioration and Water Management 2021, no. 6 (March 9, 2022): 25–30. http://dx.doi.org/10.32962/0235-2524-2021-6-25-30.
Full textAbstract:
The relevance of the research is caused by the need to reduce energy losses during irrigation and improve the quality of irrigation of the «Fregat» sprinkling machines. The article describes a low-pressure sprinkling machine «Fregat» with an additional polyethylene pipeline and a filter that provides fine cleaning of water from debris and feed to the hydraulic drives of the sprinkling machine’s carts. The formulas are given and the sequence for calculating the di-ameter of the additional polyethylene pipeline and the pressure at the inlet to the machine, de-pending on its modification, is shown. When using an additional polyethylene pipeline with a diameter of 63 mm and the cyclicity of the hydraulic cylinder of the last cart equal to 4 strokes/min, the pressure at the inlet of machines of various modifications decreases from 0.53-0.7 MPa to 0.37-0.45 MPa or 1.3-1.5 times. For such machines, in order to increase the movement speed by 2-4 times, the hydraulic cylinders are fed with water from an additional polyethylene pipeline only in the second half of the length of the machine pipeline. Researches have confirmed the high efficiency of modificating the «Fregat» sprinkling machine to a low-pressure operating mode, which leads to optimization of the pumping station operation, also increases the number of simultaneously operating machines, decreases the time of irrigation of an irrigated area and a decreases an electricity consumption for irrigation.
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Mallak, Ahlam, and Madjid Fathi. "Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers." Sensors 21, no. 2 (January 9, 2021): 433. http://dx.doi.org/10.3390/s21020433.
Full textAbstract:
Anomaly occurrences in hydraulic machinery might lead to massive system shut down, jeopardizing the safety of the machinery and its surrounding human operator(s) and environment, and the severe economic implications following the faults and their associated damage. Hydraulics are mostly placed in ruthless environments, where they are consistently vulnerable to many faults. Hence, not only are the machines and their components prone to anomalies, but also the sensors attached to them, which monitor and report their health and behavioral changes. In this work, a comprehensive applicational analysis of anomalies in hydraulic systems extracted from a hydraulic test rig was thoroughly achieved. First, we provided a combination of a new architecture of LSTM autoencoders and supervised machine and deep learning methodologies, to perform two separate stages of fault detection and diagnosis. The two phases were condensed by—the detection phase using the LSTM autoencoder. Followed by the fault diagnosis phase represented by the classification schema. The previously mentioned framework was applied to both component and sensor faults in hydraulic systems, deployed in the form of two in-depth applicational experiments. Moreover, a thorough literature review of related work from the past decade, for autoencoders related fault detection and diagnosis in hydraulic systems, was successfully conducted in this study.
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Mallak, Ahlam, and Madjid Fathi. "Sensor and Component Fault Detection and Diagnosis for Hydraulic Machinery Integrating LSTM Autoencoder Detector and Diagnostic Classifiers." Sensors 21, no. 2 (January 9, 2021): 433. http://dx.doi.org/10.3390/s21020433.
Full textAbstract:
Anomaly occurrences in hydraulic machinery might lead to massive system shut down, jeopardizing the safety of the machinery and its surrounding human operator(s) and environment, and the severe economic implications following the faults and their associated damage. Hydraulics are mostly placed in ruthless environments, where they are consistently vulnerable to many faults. Hence, not only are the machines and their components prone to anomalies, but also the sensors attached to them, which monitor and report their health and behavioral changes. In this work, a comprehensive applicational analysis of anomalies in hydraulic systems extracted from a hydraulic test rig was thoroughly achieved. First, we provided a combination of a new architecture of LSTM autoencoders and supervised machine and deep learning methodologies, to perform two separate stages of fault detection and diagnosis. The two phases were condensed by—the detection phase using the LSTM autoencoder. Followed by the fault diagnosis phase represented by the classification schema. The previously mentioned framework was applied to both component and sensor faults in hydraulic systems, deployed in the form of two in-depth applicational experiments. Moreover, a thorough literature review of related work from the past decade, for autoencoders related fault detection and diagnosis in hydraulic systems, was successfully conducted in this study.
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Padovani, D., P. Fresia, M. Rundo, and G. Altare. "Downsizing the electric machines of energy-efficient electro-hydraulic drives for mobile hydraulics." Journal of Physics: Conference Series 2385, no. 1 (December 1, 2022): 012028. http://dx.doi.org/10.1088/1742-6596/2385/1/012028.
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Abstract The poor energy efficiency of state-of-the-art mobile hydraulics affects the carbon dioxide released into the atmosphere and the operating costs. These crucial factors require urgent improvements that can be addressed by the electrification of fluid power. This approach has already generated electro-hydraulic drives that remove flow throttling and enable energy recovery. However, the entire power managed by the actuators of conventional systems must pass through the electric machines. This characteristic is unfeasible for medium-to-high power applications since they need electric motors and electronics with high power ratings and large onboard generation of electricity. Thus, this paper applies to a hydraulic excavator’s boom the idea of splitting the power being transferred to/from the actuator between the hydraulic and electric domains (i.e., a centralized hydraulic power supply is involved). The objective is downsizing the power rating of the boom’s electric components while maintaining the high-power output of the hydraulic actuator. The results show the expected behavior of the hybrid excavator in terms of motion control, but only 57% of the boom’s peak power is now exchanged electrically. The resulting electric machine with 61% downsizing favors the system’s cost and compactness supporting the electrification process that is aligned with the low-carbon economy.
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Wang, Jie. "Dynamic Characteristics Simulation of Radiator Fin Blanking Machine Hydraulic System." Applied Mechanics and Materials 687-691 (November 2014): 496–99. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.496.
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The hydraulic system of radiator fin blanking machine plays a leading role in the radiator fin production. Its performance directly affects the efficiency and quality of product line. The hydraulic system of blanking machine for radiator was composed of blanking circuit and support circuit. The hydraulic system realizes the cutting action using the reciprocating movement of the hydraulic cylinder. The hydraulic system simulation model was built by the simulation software of AMESim in this paper. Using the simulation model, the simulation analysis of the dynamic characteristics of hydraulic system were completed. The hydraulic system has been through the debugging and put into production, running in good condition.
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Maczyszyn, Agnieszka. "Energy Loss Coefficients ki in a Displacement Pump and Hydraulic Motor used in Hydrostatic Drives." Polish Maritime Research 26, no. 3 (September 1, 2019): 47–55. http://dx.doi.org/10.2478/pomr-2019-0045.
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Abstract The article aims at defining and analysing the energy loss coefficients in design solutions of rotating displacement machines, with a piston machine as an example. The energy losses observed in these machines include mechanical loss, volumetric loss, and pressure loss. The scale and relations between these losses in different machines depend on machine design and manufacturing quality, and on operating parameters. The operating parameters, in turn, which affect directly or indirectly the above losses depend on whether the machine works in pump or hydraulic motor regime. The article is also a contribution to the development of a library of ki coefficients which define the losses in displacement machines, as the knowledge about these coefficients makes it possible to assess fast and easily the energy efficiency of a machine or drive system at each point of its working area.
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Wang, Huan Yun, and Chun Hui Pan. "Maintenance of Hydraulic Systems on Machine Tools." Advanced Materials Research 717 (July 2013): 375–77. http://dx.doi.org/10.4028/www.scientific.net/amr.717.375.
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Proper maintenance of hydraulic equipments has a great significance to increase ratio of perfectness and utilization, ensure the quality of the project, extend service life, improve production efficiency and reduce production costs. The authors in this paper discuss the scientific measures to keep equipments in good condition and ensure workplace safety from the angle of hydraulic systems maintenance. It has reference value for proper care and maintenance of hydraulic systems on machine tools in the factorys.
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Cao, Yang, Kai Wen Qiu, Guo Qing Wu, Rong Chuan Yu, and Chao Chao Zhong. "Design and Simulation of the Hydraulic Synchronous Control System of the Upper Roller in Bending Machine." Applied Mechanics and Materials 713-715 (January 2015): 752–55. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.752.
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This paper sketches the overall structure of the hydraulic system of bending machine, and designs the hydraulic synchronous control system of the upper roller in bending machine. Then making use of AMEsim software to establish hydraulic system simulation model to analyze the pressure, velocity, displacement and other parameters of hydraulic cylinders in two cases when in open loop and closed loop system. After that, use PID algorithm to simulate the upper roller of bending machine in hydraulic closed loop synchronous system, which verifies that it can meet the motion requirements and get a higher synchronous precision.
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Zuliyati, Zuliyati, Edwin Djoenaedi, and Hutomo Rusdianto. "Peningkatan produktifitas proses produksi sampul raport melalui teknologi tepat guna." Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) 4, no. 1 (March 12, 2021): 128. http://dx.doi.org/10.33474/jipemas.v4i1.8996.
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The purpose of this activity is the empowerment of small industries, especially in the cover craftsmen and report cards “GiGa” as service partners. The method used is technology guidance through the application of appropriate technology, assistance in the use of multi-use press machines using hydraulic, e-commerce, financial administration and management assistance. The precise technology of a multipurpose automatic press machine with a hydraulic machine can be used to produce a wide range of quality cover products with an effective and efficient production system. The results of this activity are increasing the ability of independent and resilient partners and increasing the role of the micro industry in development, creating job opportunities, increasing income for cover and report card craftsmen “GiGa” in particular and the country in general, thus realizing a better economy. The output of this activity is an automatic multi-use press machine using hydraulic, effective and efficient production processes, quality cover products.
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Mergl, Václav, Zdravko Pandur, Jan Klepárník, Hrvoje Kopseak, Marin Bačić, and Marijan Šušnjar. "Technical Solutions of Forest Machine Hybridization." Energies 14, no. 10 (May 13, 2021): 2793. http://dx.doi.org/10.3390/en14102793.
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The paper deals with the characteristics of three different types of power train hybridization of forest logging machines and with the benefits of reducing environmental impacts by comparing new technology with more conventional, older technology. New hybridization options that could be implemented in forestry machines are also discussed. The paper divides a hybrid solution into three classes based on the energy used in the system of hybridization. First is an electro-hybrid system that uses an electric motor and battery or different storage device. The second, a hydraulic hybrid system, is a solution with a hydraulic accumulator, hydraulic motor, and pump. The third system is a combination of the electro-hybrid and hydraulic-hybrid system. The current technical and technological development of hybrid drive systems, as well as their components, has led to significant improvements in drive performance and thus better performance of the new generation of forest vehicles. Improved energy efficiency using hybrid propulsion systems in forest vehicles would result in a significant reduction in greenhouse gas emissions and possibly lower maintenance costs.
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Popikov, P., Petr Popikov, Andrey Sharov, Aleksandr Petkov, and Anton Pozdnyakov. "INFLUENCE OF OPERATING MODES OF FOREST FIRE SOIL-THROWING MACHINE WITH HYDRAULIC DRIVE ON EFFICIENCY INDICATORS." Forestry Engineering Journal 10, no. 1 (April 6, 2020): 209–17. http://dx.doi.org/10.34220/issn.2222-7962/2020.1/25.
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Many areas of human activity, in particular, agriculture and the timber industry, use technological machines and
equipment having in their arsenal a hydraulic system for supplying pressure to the used units for soil cultivation,
sowing, cutting, rooting out and many others. The article discusses the use of an energy-saving hydraulic drive. It
provides experimental data on its use in a forest fire soil-throwing machine. The experiment was carried out using the
LHT-55 forestry tractor, on the rear hitch of which a laboratory sample of a fire-fighting soil-throwing machine with a
rotor-thrower drive from a hydraulic motor has been mounted. An adjustable hydraulic pump is installed on the rear
frame of LHT-55 tractor, on which there is a regulator of the volume of supplied fluid. In the course of experimental
studies we used the methods, specified in State Standard 20915–2011, Industrial Standard 70.2.16–73. During the
experiments, the main indicators of the efficiency of forest fire-fighting soil-throwing machine have been determined:
the maximum surge in the pressure of the working fluid in the hydraulic drive for the duty cycle Pm; the energy stored
by the pneumohydraulic accumulator in one working cycle Pm (operation of the safety valve); the maximum energy that
a pneumohydraulic accumulator with these parameters is able to accumulate per line kilometer or per shift Eav;, average
range of the soil throwing Lav and the thickness of the soil layer depending on the distance of throw T. A large number
of selected determining factors made it possible to depict graphically obtained data and conduct a visual analysis to
obtain the most effective operating modes of a forest fire soil-throwing machine with an energy-saving hydraulic drive.
The paper presents the rationale for the new design of a forest fire soil-throwing machine with an energy-saving
hydraulic drive. The dependences of the efficiency indicators of working flows on the design and technological
parameters of a forest fire soil-throwing machine have been obtained.
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Avrunin, Grigory, Igor Pimonov, Oleg Shcherbak, Aleksandr Yaryzhko, and Irene Moroz. "Analysis of modern technical means for servicing airports and airplanes." Bulletin of Kharkov National Automobile and Highway University, no. 99 (December 29, 2022): 34. http://dx.doi.org/10.30977/bul.2219-5548.2022.99.0.34.
Full textAbstract:
Problem. The problem is an integral part of developing the concept of forming a standard range of transport and technological hydrophilic modular means for maintenance of airfields and airplanes. Goal. The goal is development of scientifically sound recommendations for determining the rational parameters of the hydraulic system with automation of control and energy saving during operation of modular vehicles for maintenance of airfields and aircraft, taking into account the potential of domestic engineering and critical imports of units and assemblies. Methodology. The methods include analysis of energy saving methods in hydraulic fluid power of mobile machines according to manufacturers' catalogs and industrial examples taking into account the needs of modular vehicles for maintenance of airfields and aircraft, in particular, taking into account the creation of modern hydraulic devices and circuit solutions in hydraulic drives with throttle and machine control and automatic regulators of change of hydraulic fluid power. Results. It is established that in hydraulic drives with throttle control and pumps with unregulated working volume, throttles on parallel flow and three-wire flow regulators or LS and LUDV modern systems are used; automatic pressure and flow regulators are used with pumps with adjustable displacement; in machine-controlled hydraulic drives through the use of pumps and hydraulic motors with adjustable displacement and hydraulic automation; by energy recovery during operation and bench tests of hydraulic drives; at the design stage of hydraulic drives, when the static analysis is performed in terms of efficiency and dynamic to reduce the loads on the starting modes of operation; and also at designing lay the effective circuit technical decisions promoting energy saving; directly in operation due to high-quality working fluids, heat exchange systems and filtration. Originality. The classification of methods of energy saving in volumetric hydraulic drives of mobile machines is made and examples of application of some means which are planned for introduction in transmissions and the technological equipment of cars for service of aerodromes and planes are resulted. Practical value. The possibility of a rational selection of axial-piston domestic hydraulic machines for the development of hydraulic drives for airfields and aircraft is proven.
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Avrunin, Grigory, Igor Pimonov, Oleh Shcherbak, Irene Moroz, and Oleksandrа Olieinikova. "Аnalysis of energy saving methods servic-ing airfields and airplanes." Bulletin of Kharkov National Automobile and Highway University, no. 99 (December 29, 2022): 18. http://dx.doi.org/10.30977/bul.2219-5548.2022.99.0.18.
Full textAbstract:
Problem. The problem is an integral part of developing the concept of forming a standard range of transport and technological hydrophilic modular means for maintenance of airfields and aircraft. Goal. The goal is development of scientifically sound recommendations for determining the rational parameters of the hydraulic system with automation of control and energy saving during operation of modular vehicles for maintenance of airfields and aircraft, taking into account the potential of domestic engineering and critical imports of units and assemblies. Methodology. The methods include analysis of energy saving methods in hydraulic fluid power of mobile machines according to manufacturers' catalogs and industrial examples taking into account the needs of modular vehicles for maintenance of airfields and aircraft, in particular, taking into account the creation of modern hydraulic devices and circuit solutions in hydraulic drives with throttle and machine control and automatic regulators of change of hydraulic fluid power. Results. It is established that in hydraulic drives with throttle control and pumps with unregulated working volume, throttles on parallel flow and three-wire flow regulators or LS and LUDV modern systems are used; automatic pressure and flow regulators are used with pumps with adjustable displacement; in machine-controlled hydraulic drives through the use of pumps and hydraulic motors with adjustable displacement and hydraulic automation; by energy recovery during operation and bench tests of hydraulic drives; at the design stage of hydraulic drives, when the static analysis is performed in terms of efficiency and dynamic to reduce the loads on the starting modes of operation; and also at designing lay the effective circuit technical decisions promoting energy saving; directly in operation due to high-quality working fluids, heat exchange systems and filtration. Originality. The classification of methods of energy saving in volumetric hydraulic drives of mobile machines is made and examples of application of some means which are planned for introduction in transmissions and the technological equipment of cars for service of aerodromes and planes are resulted. Practical value. The possibility of a rational selection of axial-piston domestic hydraulic machines for the development of hydraulic drives for airfields and aircraft is proven.
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Gao, Xiao Yan, Zhong Yong Wu, Xian Wang, Zhen Hua Duan, Jin Tao Qu, and Yun Han Liu. "The Research of Energy Saving Improved on Copper Anode in the Hydraulic System Based on AMESim." Advanced Materials Research 591-593 (November 2012): 785–88. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.785.
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In response to the awareness of environmental conservation-oriented society and low carbon economy , this paper puts forwarding the load sensing control that is applied to the copper anode shaping machine hydraulic system energy transformation in the light of copper electrolytic anode shaping machine hydraulic system energy conservation issues, through the shaping machine hydraulic system energy loss analysis, and then uses AMESim software for plastic machine load sensing control system performance simulation and analysis, in order to achieve the purpose of energy saving.