Journal articles: 'Mobile hydraulic machine'

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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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Temirkanov-, Alan, and Aleksandr Ribak-. "Theoretical studies of synchronous hydraulic drive mobile machine." Актуальные направления научных исследований XXI века: теория и практика 3, no. 9 (December 22, 2015): 382–86. http://dx.doi.org/10.12737/16950.

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Abo-Shanab, R. F., and N. Sepehri. "Tip-Over Stability of Manipulator-Like Mobile Hydraulic Machines." Journal of Dynamic Systems, Measurement, and Control 127, no. 2 (June 1, 2004): 295–301. http://dx.doi.org/10.1115/1.1898239.

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This paper describes the development of a simulation model for studying the tip-over stability of a typical heavy-duty hydraulic log-loader machine. The model takes into account the dynamics of (i) the base that can potentially rock back and forth, (ii) the combined vehicle suspension and ground/tire compliance, (iii) the friction between the tires and the ground, and (iv) the hydraulic actuators’ functions. The results demonstrate the effects of the manipulator movements, the flexibility of the contact between the base and the ground, the hydraulic compliance, and the friction properties between the wheels and the ground, on the stability of the machine. Particularly, it is shown that the flexibility of the contact between the base and the ground reduces the machine stability, whereas the flexibility at the manipulator joints due the hydraulic compliance improves the machine stability.

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Kałaczyński, Tomasz, Valeriy Martynyuk, Juliy Boiko, Sergiy Matyukh, and Svitlana Petrashchuk. "Exploitation aspects of diagnostic hydraulic and pneumatic systems of Multimedia Hybrid Mobile Stages." MATEC Web of Conferences 332 (2021): 01022. http://dx.doi.org/10.1051/matecconf/202133201022.

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Knowledge of the technical state and construction of the hydraulic and pneumatic control system of Multimedia Hybrid Mobile Stage HMSM allows you to identify hazards and make a risk assessment. The aspects of the algorithmic process of diagnosing pneumatic and hydraulic control systems presented in the work form the basis for the development and implementation of safe solutions in the process of operation. This article describes the methodology for diagnosing HMSM machine hydraulics and industrial pneumatics systems, detailing the factors determining the correctness of maintaining functional fitness. The considerations developed illustrate the complexity of the diagnostic testing design process for condition assessment.

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Ghasempoor, A., and N. Sepehri. "A Measure of Stability for Mobile Manipulators With Application to Heavy-Duty Hydraulic Machines." Journal of Dynamic Systems, Measurement, and Control 120, no. 3 (September 1, 1998): 360–70. http://dx.doi.org/10.1115/1.2805410.

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This paper describes the development of a suitable algorithm to compute the potential of tipping-over for vehicles that carry manipulators. The energy method developed by Messuri and Klein (1985) is extended here to quantitatively reflect the effect of forces and moments arising from the manipulation of the implement. The amount of the impact energy that can be sustained by the vehicle without tipping-over, about each edge of potential overturning is computed. First, the instantaneous onset of instability configuration of the machine about the edge is determined by constructing an equilibrium plane. Next, the work done by all acting forces and moments when the machine is virtually brought to this unstable stance from the current state, is calculated. This work is the indication of the proximity of the machine to tipping-over around that edge. The application of this study is directed at industrial mobile machines that carry human-operated hydraulic manipulators. The algorithm is therefore used to study the stability of an excavator based log-loader. Simulation studies clearly show the importance of inertial loads in determining the stability of such machines.

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Puzanov, A. V. "Transdisciplinary models of hydraulic drives of mobile machinery." «System analysis and applied information science», no. 4 (February 6, 2019): 51–55. http://dx.doi.org/10.21122/2309-4923-2018-4-51-55.

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Modern drive engineering requires a comprehensive analysis of all work processes in hydraulic drives, solving the problems of modeling the technological processes of their production using mathematical and software tools of various physicality.The article proposes an approach to the development of hydrodrives of mobile equipment based on transdisciplinary models of instruments and control systems. These models are designed to unite in a single information space a methodical and mathematical apparatus of various physicality: mechanics, kinematic, hydromechanics, heat engineering, and methods for their solution. These measures will increase their adequacy, reduce assumptions and reduce the safety factor as a measure of imperfection of the scientific and technical understanding of the facility.The article gives an example of the use of this approach in the development of volumetric hydraulic drives of mobile equipment a technique for calculating the indicator diagram of an axial-plunger hydraulic machine at a micro level using the Matlab / Simulink, Autodesk Simulation CFD and Autodesk Simulation Mechanical software complexes. The indicator diagram of the hydraulic machine is a clear characteristic of the dynamic qualities of the product. From the correctness of the calculation of this characteristic, the dynamic properties, reliability and resource of the drive as a whole depend.

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KARHU, Otso, Jarno UUSISALO, Janne HONKAKORPI, and Kalevi HUHTALA. "AUTONOMOUS EXCAVATION USING HYDRAULIC MOBILE MACHINE RETROFITTED WITH ELECTRONIC CONTROL SYSTEM." Proceedings of the JFPS International Symposium on Fluid Power 2008, no. 7-2 (2008): 359–62. http://dx.doi.org/10.5739/isfp.2008.359.

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Goto, Hiroyuki, Yutaka Tanaka, and Ken Ichiryu. "3D Tube Forming and Applications of a New Bending Machine with Hydraulic Parallel Kinematics." International Journal of Automation Technology 6, no. 4 (July 5, 2012): 509–15. http://dx.doi.org/10.20965/ijat.2012.p0509.

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This research presents a new versatile bending machine and its practical applications. The proposed machine uses a new method. When tubes are fed into the fixed and mobile dies, they are bent by shifting the relative position of the mobile die. The bending radius is controlled by the relative distance and orientation between the mobile die and the tube. The bending angle is controlled by the length of the fed tube. This forming process has a big advantage. A change in the expected bending shape will need no change in the tooling system but only a new definition of the motion of the active die and the length of the fed tube. Active die movements are controlled by a 6-DOF Parallel KinematicsMechanism (PKM) with a hydraulic servo drive. Making use of the hydraulic PKM serves not only to achieve a complete motion along six axes but also to obtain the high dynamic motion of the bending machine. Application examples show that the bending machine can be applied to a designer’s furniture and universal designed products. Until now, these processes have been difficult to achieve using a conventional bending machine.

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Rybak, Alexander, and I. Tsibriy. "Simulation of the pump-battery power supply control system based on the unloading machine." E3S Web of Conferences 164 (2020): 01004. http://dx.doi.org/10.1051/e3sconf/202016401004.

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The aim of this article is to create a control system for a constant hydraulic power source pressure, a pump -battery power source equipped with an original design of the hydraulic pump discharge machine that provides relay switching of its operation mode. This aim is achieved by using a simulation method based on the application of volumetric stiffness theory of hydraulic systems and their elements. As a result of a numerical experiment conducted by solving the equations that make up the mathematical model of power supply, its main technical characteristics and the influence of its main design parameters on its functional features and operational properties are obtained. The obtained results showed that by changing the various design parameters of unloading machine, it is possible not only to change the upper (maximum) and lower (minimum) values of the battery charging pressure, but also to adjust their difference depending on the requirements for the power source. The main result of this study is that as a result of a numerical experiment, it is proved that the unloading machine provides a clear relay switching of the pump operation mode from unloading to operating mode and Vice versa. The identified properties make a very promising use of a pump -battery power source in the hydraulic systems of mobile machines and process equipment.

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Pershin, V. A., and T. A. Khinikadze. "TECHNIQUE OF FUNCTIONAL UNIFICATION OF ADAPTIVE HYDRAULIC DRIVE MODULE CAPABLE OF LOAD STABILIZATION ON THE WORKING BODY OF MOBILE MACHINES." Vestnik of Don State Technical University 18, no. 3 (September 29, 2018): 318–25. http://dx.doi.org/10.23947/1992-5980-2018-18-3-318-325.

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Introduction. Issues on the functional unification of the adaptive hydraulic drive module are studied. For the first time, self-adapting mechanisms are considered taking into account adaptive intercommunication of the load control and agreement of motions on the working body of the mobile machines. The work objective is to create and analyze the technique of the functional unification of the adaptive hydraulic drive module. In the furtherance of this goal, a number of tasks are solved. The selection of technical equipment – unified adaptive hydraulic drive modules of the mobile machines – is validated. The methodology and indicators of the module functional unification are described. Intercommunications are considered: direct positive and back negative ones. Their effect on the functional unification property of the adaptive module is shown.Materials and Methods. For the synthesis and analysis of the functional unification indicators of the adaptive module, a similarity method of the technical systems operation is adopted.Research Results. Techniques for structural-functional unification of the self-adapting modules are developed. Optional versions of the unified modules modification and proper combinations of hydraulic motors, regulating equipment, and mathematical models of adaptive communications are presented. Criteria and indicators of similarity are proposed. The functional unification of the adaptive intercommunications of the module and different types of the hydraulic motors and fluid throttling elements in the hydraulic system are analyzed. Recommendations for implementing the functional unification under typing and operation (adjustment) of the adaptive module are formulated.Discussion and Conclusions. The methodology is recommended for the functional unification of the hydraulic self-adapting module. It can be used for the development of unit sizes and under its operation as an independent drive or a hydraulic drive subsystem of a multifunctional or combined machine.

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Ponomarev, Pavel, Tatiana Minav, Rafael Åman, and Lauri Luostarinen. "Integrated Electro-Hydraulic Machine with Self-Cooling Possibilities for Non-Road Mobile Machinery." Strojniški vestnik – Journal of Mechanical Engineering 61, no. 3 (March 15, 2015): 207–13. http://dx.doi.org/10.5545/sv-jme.2014.2017.

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Grishchenko, V. I., A. A. Tumakov, M. S. Poleshkin, M. S. Kilina, and D. D. Dymochkin. "Modeling automatic horizontation system of steep-sloping mobile machine with hydraulic sensor roll." Omsk Scientific Bulletin, no. 164 (2019): 11–18. http://dx.doi.org/10.25206/1813-8225-2019-164-11-18.

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Zakharov, Viacheslav, and Tatiana Minav. "Analysis of Field Oriented Control of Permanent Magnet Synchronous Motor for a Valveless Pump-Controlled Actuator." Proceedings 64, no. 1 (November 20, 2020): 19. http://dx.doi.org/10.3390/iecat2020-08491.

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Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence. Thus, the new system has been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery in particular. One of the pump-controlled systems can be realized via direct control of hydraulic pump/motor by varying speed of prime mover. Electric motor (EM) as a prime mover attract with higher efficiency (more than 90%) and a wide range of speed regulation. These advantages allow to improve the system efficiency and decrease the energy consumption in electric and hybrid non-road mobile machinery. Further EM's efficiency improvement can be achieved by using vector control systems, which provide rotor magnetic flux control proportionally to the shaft's speed. Considering all vector control’s benefits (high accuracy of speed control, smooth~start and smooth rotation of the motor in the entire frequency range, quick response to load changes, increased control range and accuracy of regulation), the electro-hydraulic systems and influence of electric part on hydraulic one is not investigated widely. Therefore, in this paper Field Oriented Control (FOC) is analyzed as One of the most perspective vector control systems for electro-hydraulic actuator application with a Permanent Magnet Synchronous Machine (PMSM) as a prime mover. In~this study, Direct-driven hydraulics (DDH) was considered as a study case. A detailed model of the PMSM control system with DDH was built in MATLAB/Simulink. The behavior of the DDH system was investigated by transient processes analysis of EM, pump, and cylinder in the normal and failure modes. The system demonstrates a difference between reference and simulated speed about 0.33% and 11.75% of average torque fluctuations. The behavior of the system in failure mode demonstrated multiple excesses of rated parameters.

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Zhang, Dong Sheng, Xiao Hong Liu, Shu Jun Gao, and Jian Du. "Simulation Study on Hydraulic Assisted Steering System of Snake Mobile Conveyor." Advanced Materials Research 619 (December 2012): 485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.619.485.

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Snake mobile conveyor is a special structure new conveyor, its body composed of a number of independent frames which relative rotation and achieved conveyor’s horizontal turning. In order to insure smoothness and controllability of turning, system executed predict the feedback control on the steering fuel tank using a hydraulic-assisted steering system. Control programs: the establishment of the virtual prototype of the machine - record tractor turning angle - calculation orbit of tractor frame - to calculate the steering cylinder corresponding stretched time and displacement - the controller to control assisted steering - Complete trajectory , and simulation analysis proved that this control method is feasible.

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Ozerskiy, A. I., V. S. Sidorenko, S. V. Rakulenko, and M. S. Poleshkin. "RESEARCH OF DYNAMIC MODES OF VOLUMETRIC HYDRAULIC DRIVE WITH DIESEL ENGINE MOBILE DRILLING MACHINE." Фундаментальные исследования (Fundamental research) 1, no. 12 2017 (2017): 85–90. http://dx.doi.org/10.17513/fr.41984.

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KOZLOV, Leonid. "Experimental research characteristics of counterbalance valve for hydraulic drive control system of mobile machine." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 4 (April 5, 2019): 106–11. http://dx.doi.org/10.15199/48.2019.04.18.

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Tóth, František, Adam Fürstenzeller, Juraj Rusnák, Miroslav Bošanský, and Milan Kadnár. "The Possibilities of Using Ecological Liquids in Tribological Gliding Systems with a Selected Surface Created by the Radial Welding Technology." Acta Technologica Agriculturae 22, no. 4 (December 1, 2019): 134–39. http://dx.doi.org/10.2478/ata-2019-0024.

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Abstract Presented paper deals with the issue of lubricating tribological systems formed by a double pair operating under mixed conditions of mixed friction before and after experimental tests, which were conducted in accordance with the selected methodology using Tribotestor M‘06 test machine. The lubricating media included ecological oils Plantohyd 46 S by Fuchs and EAL Hydraulic 46 manufactured by the Mobil company. Applied ecological oils can be used in agricultural mobile machines as a replacement for conventional lubricants. The tests were conducted on designated material double pairs. The shaft was made of steel 16MnCr5. The second observed friction element in terms of glide angle test was a steel plate made of S235JR, gliding surface of which was produced utilizing flame powder coating technology. The results were statistically processed and are presented in the form of graphs, tables and figures.

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Ivanovs, Semjons, Volodymir Bulgakov, V. Nadykto, Ye Ihnatiev, S. Smolinskyi, and Z. Kiernicki. "EXPERIMENTAL STUDY OF THE MOVEMENT CONTROLLABILITY OF A MACHINE-AND-TRACTOR AGGREGATE OF THE MODULAR TYPE." INMATEH Vol.61 61, no. 2 (August 31, 2020): 9–16. http://dx.doi.org/10.35633/inmateh-61-01.

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he paper presents an analysis of the basic principles of formation, the properties and characteristics of a new modular energy tool, consisting of the energy and the technology modules. The purpose of this study is to assess the degree of impact of the throttle in the hydraulic line, connecting the cavity of the hydraulic cylinder, upon the controllability of the modular power tool with a mounted plough during the movement of the ploughing aggregate on the headland. As a result of the conducted tests, it was proved that increasing the controllability of the movement of the aggregate on the basis of a mobile power tool is possible by throttling one of the hydraulic cylinders that limit the mutual reciprocal rotation of the modules in a horizontal plane. Installation of the throttle modular power tool on the limiting hydraulic cylinder with a drag coefficient 1.03×106∙N∙m∙s∙rad–1 allows one to reduce two times the delay in the reaction of the relative bearing of the energy module to a change in the angle of rotation of its driven wheels.

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Lagerev, I. A. "Pre-design optimization of the manipulation system with hydraulic drive for mobile transport-technological machine." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 3, no. 1 (March 25, 2017): 26–45. http://dx.doi.org/10.22281/2413-9920-2017-03-01-26-45.

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Kaźmierczak, H., T. Pawłowski, and K. Zembrowski. "A Synthesis Model for Forcing Action Arrangement in the System of Reducing Dynamic Loads of a Mobile Machine." International Journal of Applied Mechanics and Engineering 20, no. 2 (May 1, 2015): 437–43. http://dx.doi.org/10.1515/ijame-2015-0029.

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Abstract An idea is presented for a method to lower excessive dynamic loads in the system of supporting structure, mechanical-hydraulic forcing system, vibration isolation system, protective unit. The dynamic characteristics of the system are determined by the method of dynamic susceptibility. An analytical model of the system was built (mobile machine to carry out protective treatments; project WDN-POIG.01.03.01-00-164/09).

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Li, Zhi Xin, Shi Ming Ji, Qiao Ling Yuan, Li Zhang, and Ming Sheng Jin. "Dynamic Characteristic Difference on Two Kinds of Broading Machine on the Similar Configuration." Advanced Materials Research 215 (March 2011): 186–90. http://dx.doi.org/10.4028/www.scientific.net/amr.215.186.

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This paper focuses on the dynamics characteristic difference on the two kinds of broading machine, the workpiece moving and the cutting-tool moving. There is 0.002mm thickness of oil-film clearance between the mobile and immobile components of the broading machine. Hydraulic pressure derived from the driving oil cylinder drives the workpiece or cutting-tool moving, while the material on the workpiece is cutting. Cutting-tool of the machine is an external expand cutter with the groove for breaking the cutting waste, the manufacturing phase is a pulse impact cutting exciting applying on the broading machine correspondingly. On manufacturing, natural characteristic of the broading machine is approximately the pulse impulsion frequency of the machine;response amplitude of the lather is increasing manifesting. The study is focused on the dynamics characteristic of two kinds of broading machine, the difference is workpiece or cutter moving, to predict the manufacturing performance.

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Xue, Yong, JunHong Yang, JianZhong Shang, and HuiXiang Xie. "Design and optimization of a new kind of hydraulic cylinder for mobile robots." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 18 (February 23, 2015): 3459–72. http://dx.doi.org/10.1177/0954406215570106.

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In order to improve the efficiency of multi-actuator mobile robots hydraulic system, this paper proposes a new kind of cylinder whose effective area is variable. The new cylinder has multi chambers which can be connected with each other or to a main system circuit by controlling switching valves. On the one hand, the new cylinder can make sure that the load pressure of all actuators is almost equal through varying effective area. On the other hand, the new cylinder can realize the flow recovery through that return chambers are connected with feeding chambers. Therefore, the new cylinder can reduce overall machine energy consumption by reducing throttling losses and allowing energy recovery. The performance of the new cylinder is analyzed through building the mathematical model. Based on the evaluated results, in order to further improve the performance of the load match of the cylinder and avoid the deflection of the main piston, the structure of the cylinder is optimized. Finally, an optimized cylinder is shown in this paper which has well performance of the load match.

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Xu, Tianyu, Zhijun Zhou, Ruipeng Yan, Zhipeng Zhang, Linxuan Zhu, Chaoran Chen, Fu Xu, and Tong Liu. "Real-Time Monitoring Method for Layered Compaction Quality of Loess Subgrade Based on Hydraulic Compactor Reinforcement." Sensors 20, no. 15 (July 31, 2020): 4288. http://dx.doi.org/10.3390/s20154288.

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Hydraulic compactor is an efficient reinforcement machine for loess subgrade. However, it is difficult to control the layered compaction quality of the subgrade. This research presents a real-time layered compactness monitoring method for hydraulic compactor reinforcement of subgrade in loess areas. The hydraulic force coefficient is first introduced, and the dynamic response model of the hydraulic rammer and soil is established. The relationship between the acceleration of the hydraulic rammer and the compactness of subgrade is then obtained based on the collision theory in elastic half space. A full-scale test using a hydraulic compactor to reinforce loess subgrade was also carried out. Results show that the hydraulic compactor obtains the effective influence depth for the reinforcement of loess subgrade. Within the effective reinforcement depth, the relationship between the peak acceleration of the rammer and the layered compactness of subgrade can be well fitted by a quadratic function model. The layered compactness of the subgrade and the working state of the hydraulic compactor can then be remotely monitored at a mobile terminal in real time. Furthermore, the monitoring technology was applied to Huangling-Yan’an Expressway in China, significantly improving the accuracy and efficiency of real-time monitoring of the layered compactness of subgrade in the loess area.

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Polishchuk, Mikhail, Mykyta Suyazov, and Mark Opashnyansky. "Study on numerical analysis of dynamic parameters of mobile walking robot." Journal of Mechanical Engineering and Sciences 14, no. 1 (March 23, 2020): 6380–92. http://dx.doi.org/10.15282/jmes.14.1.2020.14.0499.

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A dynamic model of a walking robot is proposed for moving along surfaces of different topologies and orientations to the horizon. The principal difference between walking robot mechanisms is that they are made in the form of flexible pedipulators. Actually the pedipulators are a set of spherical rings with a hydraulic or pneumatic drive. The patented design (Patent UA No 117065, publ. 2018.06.11) of the robot's feet is anthropomorphic and allows the robot to work in the angular coordinate system inherent in the human walking machine. The proposed mathematical model allows us to calculate the dynamic parameters (forces and moments) and compare these parameters with the allowable technological load that a walking robot can perform without losing adhesion with the displacement surface.

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Kobzev, Kirill, Sergey Vyalov, and Alexander Rybak. "Learning the basics of a battery pack control system." E3S Web of Conferences 164 (2020): 13006. http://dx.doi.org/10.1051/e3sconf/202016413006.

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The article discusses the control system of a hydraulic power source of constant pressure, which is a pump-storage power source, equipped with the original design of the automatic unloading of the hydraulic pump, which provides relay switching of its operation mode. A mathematical model is proposed, obtained using a modeling technique based on the application of the theory of volumetric rigidity of hydraulic systems and their elements. The results of a numerical experiment carried out by numerically solving the equations that make up the mathematical model of a power source are also presented. As a result of a numerical experiment, the main technical capabilities of the considered power source and the influence of its main structural parameters and functional features of the system on operational properties are revealed. The results showed that due to changes in various design parameters of the unloading machine, you can not only change the upper (maximum) and lower (minimum) values of the battery charging pressure, but also adjust their difference depending on the requirements for the power source. The main property of a power source with an automatic unloading device of the proposed design, confirmed as a result of a numerical experiment, is that the automatic unloading device provides a clear relay switching of the pump operation mode from unloading to operating mode and vice versa. The revealed properties make it very promising to use a pump-accumulator power source in the hydraulic systems of mobile machines and technological equipment.

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Fassbender, David, and Tatina Minav. "Finding the Perfect Match: Different Heavy-Duty Mobile Applications Call for Different Actuators." Proceedings 64, no. 1 (November 22, 2020): 22. http://dx.doi.org/10.3390/iecat2020-08524.

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For the longest time, valve-controlled, centralized hydraulic systems have been the state-of-the-art technology to actuate heavy-duty mobile machine (HDMM) implements. Due to the typically low energy efficiency of those systems, a high number of promising, more-efficient actuator concepts has been proposed by academia as well as industry over the last decades as potential replacements for valve control—e.g., independent metering, displacement control, different types of electro-hydraulic actuators (EHAs), electro-mechanic actuators, or hydraulic transformers. This paper takes a closer look on specific HDMM applications for these actuator concepts to figure out where which novel concept can be a better alternative to conventional actuator concepts, and where novel concepts might fail to improve. For this purpose, a novel evaluation algorithm for actuator–HDMM matches is developed based on problem aspects that can indicate an unsuitable actuator–HDMM match. To demonstrate the functionality of the match evaluation algorithm, four actuator concepts and four HDMM types are analyzed and rated in order to form 16 potential actuator–HDMM matches that can be evaluated by the novel algorithm. The four actuator concepts comprise a conventional valve-controlled concept and three different types of EHAs. The HDMM types are excavator, wheel loader, backhoe, and telehandler. Finally, the evaluation of the 16 matches results in 16 mismatch values, of which the lowest indicates the “perfect match”. Low mismatch values could be found in general for EHAs in combination with most HDMMs but also for a valve-controlled actuator concept in combination with a backhoe. Furthermore, an analysis of the concept limitations with suggestions for improvement is included.

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Basareuski, Aliaksandr. "Investigation for additional head loss in helically coiled flexible pipe of a mobile fertigation system." BIO Web of Conferences 10 (2018): 01001. http://dx.doi.org/10.1051/bioconf/20181001001.

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One of the major parameters of a hydraulic machine is its energy intensity, i.e. its power/output ratio. This article presents the results of theoretical studies of the effects of additional head loss of transporting fluid through helically coiled flexible pipe on specific energy consumption of fertigation machinery and pipeline transport. Computational methods have been used to determine that pressure loss will be 15-20% higher on the average than the loss at a straight section, depending on the average radius of coil helix/design pipe diameter ratio. Correlations have been obtained that allow for justification of major mobile fertilizer system parameters based on the need to minimize pressure loss.

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Ho Cho, Seung, Olli Niemi-Pynttäri, and Matti Linjama. "Friction characteristics of a multi-chamber cylinder for digital hydraulics." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 5 (March 2, 2015): 685–98. http://dx.doi.org/10.1177/0954406215575414.

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This paper deals with the issue of defining friction characteristics of a multi-chamber cylinder for digital hydraulics. Using a multi-chamber cylinder under a set of supply pressures, friction characteristics are experimentally investigated for a range of velocity according to load conditions. A binary digit-based pressure e.g., high pressure or low pressure has been applied to each chamber. The friction force is measured based on the equation of motion using measured values of the pressures in the chambers of the multi-chamber cylinder and the position of the piston. As a mechanism to load the multi-chamber cylinder, a 1-Degree of Freedom (DOF) boom mockup mimicking a medium-sized mobile machine boom has been constructed. Then it has been utilized to test the motion of the cylinder under different mass–load conditions. It is shown that the cylinder states do not dominantly affect the friction force of a multi-chamber cylinder, comparing the effect of other parameter such as mass load and velocity, which is expected to be useful for the secondary control of digital hydraulic systems.

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Rasma, Rasma, Thomas Junaedi, Hendro Purwono, and Riki Effendi. "Modification of Digital Oil Pressure Measurement Equipment using Bluetooth Technology." SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin 13, no. 2 (December 1, 2019): 103. http://dx.doi.org/10.24853/sintek.13.2.103-109.

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PT United Tractors Tbk Jakarta workshop held a lot of Machine Inspection Programs for Komatsu units. During the implementation of the Machine Inspection Program (PPM) the machine inspection program is one part of the maintenance that is carried out periodically to obtain accurate data on the condition of the equipment at the time by carrying out checks and adjustments using measurement methods and diagnostic instruments The use of a pressure gauge is still using manual and has a measurement distance that is still limited, if workers or mechanics are not equipped with sufficient knowledge then the pressure gauge will have the potential for error in use and the selection of a pressure gauge is not appropriate to the pressure gauge directly connected to the hydraulic pressure through the hose then the work process ppm is not enough 1 manpower. Therefore it is necessary to modify a digital pressure gauge that has a wide range of scales, in addition a wireless connection is needed to enable the operation of the unit and measurements are made 1 manpower and Bluetooth is one of the right choices in addition to the reach can be met in an application not too difficult so that readings measurement results can be connected directly via mobile.

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Pelletier, Mathew G., John D. Wanjura, and Greg A. Holt. "Man-Machine-Interface Software Design of a Cotton Harvester Yield Monitor Calibration System." AgriEngineering 1, no. 4 (October 21, 2019): 511–22. http://dx.doi.org/10.3390/agriengineering1040037.

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Several yield monitors are available for use on cotton harvesters, but none are able to maintain yield measurement accuracy across cultivars and field conditions that vary spatially and/or temporally. Thus, the utility of yield monitors as tools for on-farm research is limited unless steps are taken to calibrate the systems as cultivars and conditions change. This technical note details the man-machine-interface software system design portion of a harvester-based yield monitor calibration system for basket-type cotton strippers. The system was based upon the use of pressure sensors to measure the weight of the basket by monitoring the static pressure in the hydraulic lift cylinder circuit. To ensure accurate weighing, the system automatically lifted the basket to a target lift height, allowed basket time to settle, then weighed the contents of the basket. The software running the system was split into two parts that were run on an embedded low-level micro-controller, and a mobile computer located in the harvester cab. The system was field tested under commercial conditions and found to measure basket load weights within 2.5% of the reference scale. As such, the system was proven to be capable of providing an on-board auto-correction to a yield monitor for use in multi-variety field trials.

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Mocera, Francesco. "A Model-Based Design Approach for a Parallel Hybrid Electric Tractor Energy Management Strategy Using Hardware in the Loop Technique." Vehicles 3, no. 1 (December 25, 2020): 1–19. http://dx.doi.org/10.3390/vehicles3010001.

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Recent developments in emissions regulations are pushing Non-Road Mobile Machineries manufacturers towards the adoption of more efficient solutions to reduce the amount of pollutants per unit of work performed. Electrification can be a reasonable alternative to traditional powertrain to achieve this goal. The higher complexity of working machines architectures requires, now more than ever, better design and testing methodologies to better integrate electric systems into mechanical and hydraulic layouts. In this work, the attention focused on the use of a Hardware in the Loop (HIL) approach to test performance of an energy management strategy (called load observer) developed specifically for an orchard tractor starting from field characterization. The HIL bench was designed to replicate a scaled architecture of a parallel hybrid electric tractor at mechanical and electrical level. The vehicle behavior was simulated with a personal computer connected on the CAN BUS network designed for the HIL system. Several tasks were simulated starting from data gathered during field measurements of a daily use of the machine. Results showed good performance in terms of load split between the two power sources and stability of the speed control although the variability of the applied load.

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Kuznetsov, Vyacheslav V. "The Resource of Movable Sealing Joints with the O-Ring Seal." Mordovia University Bulletin, no. 4 (December 28, 2018): 562–82. http://dx.doi.org/10.15507/0236-2910.028.201804.562-582.

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Introduction. The problem of reliability of hydraulic drives sealing joints remains unsolved. However, the current level of computer modeling tools development allows us to solve effectively the problems of their longevity by replacing laborious experiments with high-performance computing. This paper presents the results of the approbation of the author's methodology for realizing computational approaches to determining the life of sealing joints on the basis of circular cross-section seal of hydraulic booster for MTZ (Minsk Tractor Works) tractors. Materials and Methods. The determination of mobile sealing joints resource is based on the author's methodology, which used ANSYS for realizing a series of accelerated loading cycles that simulates real operating conditions. The developed models consider the processes of wearing, relaxation and hydrodynamic effects acting in a sealing joint. Results. The use of the finite element modeling tools made it possible to determine the change in the stress-strain state of the power steering tightener in MTZ tractors during operation. The mechanism of joint tightness restoration on the basis of self-packing effect is revealed. The comparison of the forms of sections, obtained as a result of numerical and micrometer studies, confirms the effectiveness of the proposed methodology and the adequacy of the results obtained. The analysis of the obtained graphs shows that under normal operating conditions, the life of the sealing joint “cylinder ‒ piston” and “rod ‒ cover” is 2 and 1.12 years respectively, and as the temperature and pressure of the hydraulic fluid increase, decreases exponentially. Conclusions. The results of the study show the high efficiency of the author's methodology. This technique can be used in researches to determine the resource and criteria for the leak-tightness of sealing joints. The graphs of the dependence of the sealing joints life on temperature and hydraulic pressure allow companies, specializing in the creation and repair of hydraulic drives, to develop schedules of preventive measures for their maintenance considering a complex of operational factors. Keywords: seal, O-ring, hydraulic drive, reliability, life, service life, wear, relaxation, ANSYS, finite element analysis Acknowledgements: The study was supported by the Russian Foundation for Basic Research and the Government of the Republic of Mordovia in the framework of the project “Obtaining and research of new composite polymeric materials containing finely dispersed and nanosized modifiers for machine tribo-conjugation elements” (Grant No. 18- 48-130007а_р). For citation: Kuznetsov V. V. The Resource of Movable Sealing Joints with the O-Ring Seal. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2018; 28(4):562–582. DOI: https://doi.org/10.15507/0236-2910.028.201804.562-582

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Mocera, Francesco, and Aurelio Somà. "Analysis of a Parallel Hybrid Electric Tractor for Agricultural Applications." Energies 13, no. 12 (June 12, 2020): 3055. http://dx.doi.org/10.3390/en13123055.

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The field of Non-Road Mobile Machineries (NRMM) is now more than ever considering the adoption of electric systems to reduce the amount of pollutant emissions per unit of work. However, the intensity and complexity of the tasks performed by a working machine during its life is an obstacle to the widespread adoption of electric systems. Specific design solutions are required to properly split the power output of the hybrid powertrain among the different loads (wheel, power take off, hydraulic tools, etc.). In this work, a performance analysis between a traditional agricultural tractor and a proposed hybrid electric architecture of the same vehicle is shown. The comparison was performed on a set of tasks characterized on a real orchard tractor which were used to build the input signals of two different numerical models: one for the traditional diesel architecture and the other for the hybrid electric solution. The two models were tested with the same operating tasks to have a one to one comparison of the two architectures. Peak power capabilities of the hybrid solution and performance of the Load Observer energy management strategy were investigated to validate the feasibility of the proposed solution.

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Goeke, Sebastian, Tobias Brüggemann, and Dirk Biermann. "Development of Machining Processes for the Use of Multilayer High-Performance Coatings." ISRN Tribology 2013 (December 30, 2013): 1–6. http://dx.doi.org/10.5402/2013/750251.

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The development of corrosion- and wear-resistant high-performance coatings is important to improve components of mobile and stationary turbines, aerospace undercarriages, combustion engines, and hydraulic modules. New micro- and nanostructured coating materials and processes to machine these coatings are developed in order to increase the performance of workpieces and components, to enhance durability, and to reduce maintenance and manufacturing costs. At the Institute of Machining Technology (ISF), milling and grinding procedures have been developed for the preparation of the workpiece surface for the subsequent coating process. In contrast to conventional applications, the workpieces are not manufactured with the aim of achieving a minimized resulting surface roughness. Instead of this, a defined and adequate structure has to be generated, providing a good adhesion of the thermal sprayed coating on the workpiece surface. After first coating of the prepared substrates by a High-Velocity-Oxygen-Fuel (HVOF) coating process, the resulting surface topography does not have the required surface quality for a subsequent (Diamond Like Carbon) DLC coating process. In order to generate a more uniform surface structure, the deteriorated surface resulting from the HVOF coating process also has to be processed. Therefore, the application of an adapted grinding process with diamond wheels is used.

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Zaher, Mohamed, and Sabri Cetinkunt. "Real-Time Energy Management Control for Hybrid Electric Powertrains." Journal of Control Science and Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/801237.

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This paper focuses on embedded control of a hybrid powertrain concepts for mobile vehicle applications. Optimal robust control approach is used to develop a real-time energy management strategy. The main idea is to store the normally wasted mechanical regenerative energy in energy storage devices for later usage. The regenerative energy recovery opportunity exists in any condition where the speed of motion is in the opposite direction to the applied force or torque. This is the case when the vehicle is braking, decelerating, the motion is driven by gravitational force, or load driven. There are three main concepts for energy storing devices in hybrid vehicles: electric, hydraulic, and mechanical (flywheel). The real-time control challenge is to balance the system power demands from the engine and the hybrid storage device, without depleting the energy storage device or stalling the engine in any work cycle. In the worst-case scenario, only the engine is used and the hybrid system is completely disabled. A rule-based control algorithm is developed and is tuned for different work cycles and could be linked to a gain scheduling algorithm. A gain scheduling algorithm identifies the cycle being performed by the work machine and its position via GPS and maps both of them to the gains.

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Noritsugu, Toshiro. "Special Issue on 2nd International Conference on Recent Advances in Mechatronics (ICRAM'99)." Journal of Robotics and Mechatronics 12, no. 3 (June 20, 2000): 193. http://dx.doi.org/10.20965/jrm.2000.p0193.

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ICRAM'99 has been organized by UNESCO Chair on Mechatronics and Mechatronics Research and Application Center of Bogazici University, Istanbul in Turkey, during 24-26 May 1999, co-sponsored by IEEE (Institute of Electrical and Electronics Engineers) Industrial Electronics Society and IEEE Robotics and Automation Society. The purpose of this conference is to provide an international forum for the discussion on the most recent advances in the field of mechatronics. The program of the conference contains three kinds of papers, 4 plenary papers, 44 long papers and 90 regular papers. The long papers have been published by Springer-Verlag (ISBN 981-4021-34-2), under the name Recent Advances in Mechatronics (Eds. Okyay Kaynak, Sabri Tosunoglu and Marcelo Ang Jr.). The long papers have been presented in the following 12 sessions: Advances in Robotics, Motion control 1, Intelligent Techniques in Mechatronics 1, Virtual Techniques and Telecommanding, Robust Adaptive Control, Design of Mechanical System 1, Fault Detection and Inspection 1, Motion Control 2, Intelligent Techniques in Mechatronics 2, Analysis of Mechatronic Systems, Mobile Robots 1 and Biomedical Applications. For the regular papers, Modeling and Simulation, Trajectory Planning and Control, Variable-Structure Control Systems, Control of Mechatronic Systems, Production Automation, Machine Vision, Adaptive Control, Design of Mechatronic Systems 2, Measurement Technology, Intelligent Systems, Control of Robot Manipulators, Flexible Manufacturing Systems, Education and Training in Mechatronics, Neural Networks and Applications, Fuzzy Systems, Hydraulic and Pneumatic Applications, Mobile Robots 2, Control Applications and Sensors and Actuators. The papers have been submitted to the conference from 30 countries in the world. From Japan 14 papers have been presented, one plenary paper, S long papers and 8 regular papers. This special issue comprises 10 papers edited from the conference papers contributed from Japan. Each paper has been revised and updated for this issue from the original conference paper to describe the recent status of research and development of mechatronics in Japan. The included papers are concerned with some important and attractive subjects such as mobile robot, robot behavior evolution, nanoelectromechanical system, magnetic suspension, human symbiotic robot, stereovision, force control of robot, soft pneumatic actuator and so on. I would like to thank all the authors for their valuable contributions to this issue.

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Guo, Wei Guo. "Dynamic Strain Aging during the Plastic Flow of Metals." Key Engineering Materials 340-341 (June 2007): 823–28. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.823.

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In the present paper, in order to better understand the third type “dynamic strain aging” occurring during the plastic flow of metals, the uniaxial compressive experimental data ever obtained in University of California, San Diego using an Instron servo-hydraulic testing machine and the Hopkinson technique are systematically analysed. These experimental data cover the plastic flow stress of several fcc, hcp, bcc polycrystalline materials and several alloys at a broad range of temperatures (77K – 1,100K) and strain rates (0.001/s – 10,000/s). In analysis, the appearing region of the “dynamic strain aging ” under different temperatures and strain rates are respectively plotted by the curves of stress vs temperature, and stress vs strain for fcc, hcp and bcc metals. The results show that: (1) this third type “dynamic strain aging ” occurs in all hcp, bcc and fcc polycrystalline or alloy materials, and there are different profiles of stress-strain curve; (2) the “dynamic strain aging ”occurs in a matching coincidence of the temperature and strain rate, its temperature region will shift to higher region with increasing strain rates; (3) bcc materials do not have an initial pre-straining strain as the onset of work-hardness rate change for the “dynamic strain aging ”; and (4) based on the explanations of dynamic strain aging with serration curves (Portevin-Lechatelier effect) and other explaining mechanisms of references, The mechanism of third DSA is thought as the rapid/continuous formation of the solute atmospheres at the mobile dislocation core by the pipe diffusion along vast collective forest dislocations to result in a continuous rise curve of flow stress. Finally, several conclusions are also presented.

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Shevchuk, V. V., and T. O. Kutkovetska. "ANALYSIS OF THE MOBILE MACHINES HYDRAULIC SYSTEMS DURABILITY." Scientific notes of Taurida National V.I. Vernadsky University. Series: Technical Sciences 4, no. 2 (2019): 146–50. http://dx.doi.org/10.32838/2663-5941/2019.4-2/24.

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Axin, Mikael, Björn Eriksson, and Petter Krus. "A flexible working hydraulic system for mobile machines." International Journal of Fluid Power 17, no. 2 (February 10, 2016): 79–89. http://dx.doi.org/10.1080/14399776.2016.1141635.

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Voskresensky, G. G. "On Cavitation in the Hydraulic Drives of Mobile Machines." IOP Conference Series: Earth and Environmental Science 666, no. 5 (March 1, 2021): 052068. http://dx.doi.org/10.1088/1755-1315/666/5/052068.

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Deuster, Sebastian, and Katharina Schmitz. "Bio-Based Hydraulic Fluids and the Influence of Hydraulic Oil Viscosity on the Efficiency of Mobile Machinery." Sustainability 13, no. 14 (July 6, 2021): 7570. http://dx.doi.org/10.3390/su13147570.

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Leakage of hydraulic oils causes long-term damage to the environment. Every year, a significant amount of hydraulic oil is released into the environment through accidents and leakages. Biohydraulic oils minimize the risk of environmental damage due to their biodegradability and lack of toxicity. Mobile machines offer great substitution potential for biohydraulic oils. The majority of machines are operated with mineral hydraulic oils. Furthermore, in view of decreasing energy resources and rising CO2 emissions, there is a strong interest in reducing the fuel consumption of mobile machines. Triggered by this trend, the power density of hydraulic systems and their components continue to increase. Resulting, the used hydraulic fluid is subject to greater thermal stress and the system thermal of the used fluids are becoming increasingly important. Biohydraulic oils offer a great potential due to their thermal properties, regarding viscosity temperature dependency. Therefore, the content of this article is to consider the influence of hydraulic oil’s viscosity on the efficiency of a crawler excavator. For this purpose, experimental tests are discussed by regarding viscosity related energy losses of hydraulic systems of crawler excavators by using biohydraulic oil. A hypothesis about the dependency of rheological properties of biohydraulic oils on the hydraulic system’s efficiency is formulated.

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Iskovich-Lototskyy, Rostyslav, Nataliia Veselovska, Yaroslav Ivanchuk, and Olena Hnatyuk. "VIBRATION RESEARCH IN MOBILE AGRICULTURAL MACHINES." Vibrations in engineering and technology, no. 1(96) (August 27, 2020): 28–34. http://dx.doi.org/10.37128/2306-8744-2020-1-3.

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In this work, vibrations were investigated during loading and unloading operations of mobile agricultural machines, which are considered to be one of the most labor-intensive components of the transport process. Therefore, idle machines during carrying out operations and in anticipation of them remain quite significant, which is due to the insufficient level of mechanization of loading and unloading of cargoes on transport, with a fuzzy coordination of actions of different organizations in the overloading of loads at transport nodes and for some other reasons. The main means of mechanization are stationary and gantry cranes for containers, heavy loads and large packages, as well as means of mechanization on the railway or on the chassis of a standard mobile car or special chassis. In our opinion, the use of hydraulic impulse actuators in the production of vibration and vibration shock unloading devices is promising, due to the simplicity of construction, compactness, high energy intensity, a wide range of regulation of operating parameters and the ability to work in automated mode. In particular, a promising area is the creation of removable attachments with hydro-impulse drive for dump trucks, onboard vehicles, tractor trailers and other vehicles. For intensification of processes of unloading of a body of a trailer-dump truck of tractors the hydraulic vibrating shock device is developed. It accelerates the unloading and cleaning of the body of agricultural products. Reduced costs and reduced oversized idle tractors with unloading trailers. Therefore, the development of vibration and vibration impact equipment for use in loading and unloading operations on mobile agricultural machines and in general on transport is an urgent task.

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Krogerus, Tomi, Markus Rokala, and Kari T. Koskinen. "Data Analysis Process of working Hydraulics of small Mobile Machine." International Journal of Fluid Power 13, no. 3 (January 2012): 5–14. http://dx.doi.org/10.1080/14399776.2012.10781056.

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Uusuārvi, Richard W., and Martin E. Törngren. "Introducing distributed control in mobile machines based on hydraulic actuators." Mechatronics 4, no. 2 (March 1994): 139–57. http://dx.doi.org/10.1016/0957-4158(94)90040-x.

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Rynkevich, Sergey Anatolyevich, and Iryna Yurevna Khadkevich. "EXPERIMENTAL RESEARCH OF PHYSICAL PROPERTIES OF MOBILE MACHINES HYDRAULIC DRIVE." Вестник Белорусско-Российского университета, no. 4 (2015): 68–78. http://dx.doi.org/10.53078/20778481_2015_4_68.

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Matmurodov Farkhod Matkurbonovich, Holikov Abdiravub Mamarakhimovich, and Borisenko Ivan Borisovich. "Numerical experiments of the action of power mechanisms and ways of determining the torque on the final actuators of mobile technological machines." Global Journal of Engineering and Technology Advances 6, no. 2 (February 28, 2021): 001–7. http://dx.doi.org/10.30574/gjeta.2021.6.2.0124.

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A numerical experiment of angular displacement and angular velocity of power mechanisms is carried out on the example of potato harvesting machines. The ways of determining the torque on the final actuators such as hydraulic motors, propellers of machines and cardan gears of mobile technological machines using kinematics parameters are indicated.

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Tarichko, V. I. "Structural optimization of the hydraulic drive of a mobile transport and reloading rope complex based on pareto-optimal solutions." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 6, no. 4 (December 25, 2020): 506–17. http://dx.doi.org/10.22281/2413-9920-2020-06-04-506-517.

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The article proposes a method of structural optimization of the hydraulic drive of mobile transport and reloading rope complexes based on special multi-axle chassis with increased carrying capacity and cross-country ability. At present, this type of technological machines can be considered as a new class of technological overground transport vehicles, which is an effective alternative to stationary freight ropeways for hard-to-reach areas with difficult terrain and, if necessary, the rapid deployment of transport and logistics operations. An algorithm for the formation of the Pareto set is considered, which consists of a variety of alternative versions of the hydraulic drive based on a combination of positive displacement pumps and hydraulic motors of permissible standard sizes. A criterion for choosing the Pareto-optimal solutions of the designed hydraulic drive is proposed, based on three quality indicators — the total mass of the hydraulic machines, the specific power and the efficiency of the hydraulic drive.

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Kurochkin, Anton, Vladimir Vagin, Anton Karpesh, and Natalja Dyorina. "Control system for electrohydraulic drive of a mobile sinking hoisting plant." MATEC Web of Conferences 224 (2018): 02009. http://dx.doi.org/10.1051/matecconf/201822402009.

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The article presents the results of the control system development for the electro hydraulic drive of a mobile sinking hoisting plant. Increasing the technical performance of mobile sinking hoisting plants is possible by increasing their productivity, reducing their massiveness and increasing the durability of tractional organs and a number of units and parts of lifting machines. However, the increase in productivity, in its turn, causes the need to increase the suspended load on the traction organs, which causes a significant increase of the dynamic loads in the elastic elements in the transient operation modes of the hoisting plant. One of the ways to reduce constantly acting dynamic loads of vibration character is the use of a gearless hydraulic drive with damping properties. But, nevertheless, the hydraulic drive possibilities are limited for large vibration amplitudes of dynamic forces. The damping properties of the hydraulic drive can be increased by using control system, which allows realizing effective control of the electro hydraulic drive of the hoisting plant.

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Czyrek, Jacek, and Janusz Pobędza. "AN ANALOG-DIGITAL HYDRAULIC CYLINDER VELOCITY CONTROL SYSTEM FOR MOBILE MACHINES." Journal of KONES. Powertrain and Transport 21, no. 3 (January 1, 2014): 59–66. http://dx.doi.org/10.5604/12314005.1133164.

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Popa, Lucretia, Stefan-Iulian Moise, Victor Moise, Vasilica Stefan, and Ioan Ganea-Christu. "Structural, kinematic and kinetostatic analysis of a manure spreader equipped by a mobile platform with articulated elements." E3S Web of Conferences 180 (2020): 03009. http://dx.doi.org/10.1051/e3sconf/202018003009.

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Organic fertilization involves working with machines by a special construction, suitable for the material to be spread, machines that have, in most cases, chain conveyors with scrapers attached to the chains. In some cases, the conveyor chain may break, due to the jams, and the need for manual unloading of the bunker (bucket) appears, which requires a great physical effort, the unloading being made by the operator, using a shovel. The construction of the platform using mobile, articulated elements would greatly facilitate the unloading at the bottom of the bunker and would eliminate the physical effort of the operator. This article presents the structural, kinematic and kinetostatic analysis of a mechanism designed for actuating a mobile platform, which is part of a manure spreader, composed of articulated elements driven by hydraulic cylinders. For the kinematic analysis of the mobile element platform’s mechanism, calculation procedures written in the Matlab syntax are used. After the kinematic analysis of the mechanism, the kinetostatic analysis is performed, i.e. the determination of the reactions from the kinematic couplings, as well as the hydraulic force from the hydraulic cylinder. The results can be used for dimensional verification of the mechanism components, thus contributing to the optimization of the mechanism.

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Journal articles on the topic 'Mobile hydraulic machine'

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