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Journal articles on the topic 'Hydraulic mechanism'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

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 si

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2

Yan, Bing Bing, Wen Bo Ren, Bao Lin Yin, and Yang Li. "Hydraulic System Simulation of 3-UPS Parallel Mechanism Based on ADAMS/Hydraulics." Key Engineering Materials 579-580 (September 2013): 430–33. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.430.

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In order to guaranty the work stability of the move-in-mud robot and movement relationship of wriggle turning joint, to use the 3-UPS parallel mechanism as the steering joint. Make full use of the characteristics flexibility, heavy force loading and small workspace of the parallel mechanism. Supporting link of the parallel mechanism driven by hydraulic cylinders, so a completely hydraulic system is an important factor to ensure the stationary work of parallel mechanism, provide the required power to go forward and ensure the forward speed of the move-in-mud robot. Establish the virtual prototy

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3

Cheng, Guang Zhen, and Yuan Bo Cheng. "Design and Characteristic Analysis for Indexing Mechanism of Rotation Worktable." Applied Mechanics and Materials 34-35 (October 2010): 1573–77. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.1573.

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Aim is designing the indexing rotation worktable, used for machine process indexing rotation. in this paper introduced two kind of working method of rotation worktable, indexing rotation and circle feeding. Particularly discuss structure compose, drive fashion, transmission mechanism ,orientation clamp mechanism, working principle, indexing rotation action course, about swing hydraulic motor indexing mechanism, rack piston hydraulic cylinder indexing mechanism and hydraulic cylinder Geneva wheel indexing mechanism. through analysis and compare, summarize advantage and disadvantage of the three

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4

Mohammed, Jamal AK, Walaa M. Hashim, and Bahaa S. Beram. "Performance Improvement of a Conventional Hydraulic Elevator by Using Electro-Hydraulic Servo Mechanism." Engineering and Technology Journal 38, no. 5A (2020): 748–60. http://dx.doi.org/10.30684/etj.v38i5a.367.

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An electro-hydraulic elevator is a new type of enhanced elevators that are used in low-rise buildings that do not exceed more than three floors. In this paper, an electro-hydraulic servo system for controlling the speed of a hydraulic elevator prototype by using a proportional valve and PID controller was investigated theoretically and experimentally. A three floors elevator prototype model with 76cm height was built including hydraulics components and electrical components. The elevator system is fully automated using the Arduino UNO board based Data Acquisition (DAQ) system. LabVIEW software

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Fomenko, N. A., O. V. Burlachenko, and A. A. Lyashenko. "Hydraulic shock suppression mechanism of the hydraulic drive." IOP Conference Series: Materials Science and Engineering 971 (December 1, 2020): 042034. http://dx.doi.org/10.1088/1757-899x/971/4/042034.

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6

Vysokovych, Yevhen, Andrii Koval, Yuri Pasenko, Vitaliy Ragulin, and Oleksandr Topol. "OPTIMIZATION OF THE LIFTING MECHANISM FOR THE WORKING EQUIPMENT OF AN EARTHMOVING MACHINE." AUTOMOBILE ROADS AND ROAD CONSTRUCTION, no. 115.1 (2024): 151–61. http://dx.doi.org/10.33744/0365-8171-2024-115.1-151-161.

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Summary. This paper addresses the optimization of the structural parameters of the lifting mechanism of the frame for the working equipment in a universal rotary earthmoving trenching and excavation machine operating continuously. The goal is to reduce the efforts in its hydraulic cylinders while maintaining the prescribed kinematics of the mechanism. Structurally, the lifting mechanisms of the working equipment are designed with the hydraulic cylinder positioned above the boom (frame), and the fluid is supplied to the rod chamber of the hydraulic cylinder for lifting. The formulated optimizat

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Zubilov, G., P. Litvinov, V. Mel’nikov, A. Sorokin, and S. Zhukov. "Hydraulic drive boom lifting mechanism." IOP Conference Series: Materials Science and Engineering 537 (June 17, 2019): 032075. http://dx.doi.org/10.1088/1757-899x/537/3/032075.

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8

Hartmann, Henrik. "Carbon starvation during drought-induced tree mortality – are we chasing a myth?" Journal of Plant Hydraulics 2 (November 18, 2015): e005. http://dx.doi.org/10.20870/jph.2015.e005.

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Drought-induced tree mortality has received much attention in the recent past. McDowell et al.’s (2008) hydraulic framework links tree hydraulics with carbon dynamics and proposes two non-exclusive mortality mechanisms: carbon starvation (CS) and hydraulic failure (HF). CS is often referred to as the (partial) depletion of non-structural carbohydrates (NSC) in response to stomatal closure, reduced C assimilation and sustained C storage dependency during longer droughts. HF describes a lethal level of xylem dysfunction from runaway embolism during severe droughts. While HF can be readily inferr

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9

AROUETTE, Xavier, Yasuaki MATSUMOTO, Yoshiyuki OKAYAMA, and Norihisa MIKI. "2A1-G29 Hydraulic Amplification Mechanism for Large Displacement Actuators Systems." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2010 (2010): _2A1—G29_1—_2A1—G29_3. http://dx.doi.org/10.1299/jsmermd.2010._2a1-g29_1.

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10

Li, Duan, Jianhua Si, Xiaoyou Zhang, et al. "The Mechanism of Changes in Hydraulic Properties of Populus euphratica in Response to Drought Stress." Forests 10, no. 10 (2019): 904. http://dx.doi.org/10.3390/f10100904.

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Stable hydraulic conductivity in forest trees maintains the survival of trees which contribute to productivity in forest ecosystems. Drought conditions break down this relationship, but the mechanisms are poorly known. To increase the understanding of the mechanism of hydraulic characteristics during drought, we determined hydraulic parameters in Populus euphratica Oliv. (P. euphratica) in a time-series of drought using a high-pressure flow meter. We found that P. euphratica could enhance hydraulic transport in severe drought stress under a threshold of soil water content. Drought-induced loss

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11

Derevianchuk, Anatolii, Andrii Vakal, Volodymyr Diachenko, and Roland Gevorgian. "THE METHOD OF PARAMETERS VERIFICATION OF CANNON HYDROPNEUMATIC RECUPERATOR MECHANISM." Collection of scientific works of Odesa Military Academy, no. 15 (September 30, 2021): 121–27. http://dx.doi.org/10.37129/2313-7509.2021.15.121-127.

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Technical maintenance of armament at this stage is one of the main artillery requirements. At the same time stable and correct work of hydraulic recoil mechanism is a necessary part of exploitation of this weapon type. According to the operational documentation requirements, cannon hydraulic recoil mechanism is verified during the preparation to the shooting and technical maintenance. It is obligatory to determine initial air pressure and liquid volumes inside the recuperator mechanism of recoil absorber and its approximation to all the norms outlined in the operational documentation. We consi

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12

Li, G., Lian Chong Li, and Chun An Tang. "Study on the Mechanisms of Hydraulic Fracturing Crack Initiation and Propagating." Applied Mechanics and Materials 188 (June 2012): 101–5. http://dx.doi.org/10.4028/www.scientific.net/amm.188.101.

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The hydraulic fracturing technology is widely used in the forefront of engineering and production, the mechanisms of hydraulic fracturing crack initiation and propagating are the core content of hydraulic fracturing research. We explain the tensile mechanism of rock under the hydraulic effect, give the two forms of the crack initial water pressure (total stress and effective stress expression) in detail. From the results of theoretical analysis, experiment and numerical simulation we discriminate the mechanisms of hydraulic fracturing crack propagating, which show that cracks are distributed i

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13

Teterin, Irina, Igor Ugrumov, Ivan Teterin, and Andrey Korneev. "Research Results on Influence of Hydraulic Hammer Design Parameters." MATEC Web of Conferences 346 (2021): 03081. http://dx.doi.org/10.1051/matecconf/202134603081.

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The article presents the results of the theoretical research on the influence of the design parameters on the output characterictics of a hydraulic hammer. The hydraulic hammer under the study has a hydraulic percussive mechanism of a permanent pressure-type structure with a spool free control unit. A design model of a hydraulic percussive mechanism with a spool free control unit has been developed. The mathematical model of the hydraulic percussive mechanism of a permanent pressure-type structure with a spool free control unit is presented. The oscillogram resulting from the theoretical studi

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14

Bereziuk, O. V., V. I. Savulyak, V. O. Kharzhevskyi, and A. Ye Alekseiev. "Improved mathematical model of the hydraulic drive of the garbage truck’s sealing plate mechanism taking into account the wear of its hydraulic cylinder." Problems of Tribology 30, no. 2/116 (2025): 34–41. https://doi.org/10.31891/2079-1372-2025-116-2-34-41.

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This article is dedicated to the improvement of the mathematical model of the hydraulic drive of the mechanism of the garbage truck’s sealing plate, taking into account the wear of the hydraulic cylinder. An improved nonlinear mathematical model of the operation of the hydraulic drive of the garbage truck’s sealing plate mechanism is proposed, which takes into account the wear of the hydraulic cylinder and allows to numerically study the dynamics of the drive and determine that taking into account the wear of the hydraulic cylinder significantly affects the main parameters of the hydraulic dri

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15

Rutkevych, Volodymyr, Serhiy Shargorodskiy, Vitaliy Kushnir, and Oleksandr Ostapchuk. "DETERMINATION OF THE RANGE OF SPEED REGULATION OF WORKING BODIES OF THE MECHANISM FOR SEPARATION OF STEM FEEDS BY MATHEMATICAL MODE." ENGINEERING, ENERGY, TRANSPORT AIC, no. 2(117) (August 30, 2022): 135–45. http://dx.doi.org/10.37128/2520-6168-2022-2-14.

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The issue of increasing the efficiency and reducing the energy consumption of the technological operation of unloading stem fodder (silage and haylage) from trench storage by block-batch method, due to the development and justification of parameters and modes of operation of the adaptive hydraulic drive system. Recommendations for determining the range of speed control of the working bodies of the mechanism for separation of stem forages on the basis of the developed system of hydraulic actuators of the separator mechanism with maintenance of energy saving mode of the pumping station and inves

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16

Yang, Tian Hong, Hong Lei Liu, Qing Lei Yu, and Shi Kuo Chen. "Simulation Study of Hydraulic Fracturing Mechanism with Heterogeneous Material." Materials Science Forum 704-705 (December 2011): 993–99. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.993.

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first of all, this paper intensive studies the hydraulic fracturing mechanism of heterogeneous material resultant from the seepage – damage coupling, based on which, the coupled seepage and damage effects during hydraulic fracturing is investigated, and the difficulties of hydraulic fracturing study are how to determine failure modes and breakdown pressure. By using numerically testing method, the mechanical mechanism of hydraulic fracturing under asymmetric distribution of pore pressure with three holes, including fracture patterns, stress flied distribution, initial fracturing pressure and b

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17

Hao, Xin, Wenxing Ma, Chunbao Liu, Zhihui Qian, Luquan Ren, and Lei Ren. "Locomotor mechanism of Haplopelma hainanum based on energy conservation analysis." Biology Open 9, no. 12 (2020): bio055301. http://dx.doi.org/10.1242/bio.055301.

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ABSTRACTSpiders use their special hydraulic system to achieve superior locomotor performance and high drive efficiency. To evaluate the variation in hydraulic joint angles and energy conversion during the hydraulic drive of spiders, kinematic data of Haplopelma hainanum were collected through a 3D motion capture and synchronization analysis system. Complete stride datasets in the speed range of 0.027 to 0.691 m s−1 were analyzed. Taking the tibia–metatarsu joint as an example, it was found that speed did not affect the angle variation range of the hydraulic joint. Based on the analysis of loco

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18

Volkov, G. Yu, and Yu V. Alekseeva. "Structural and Kinematic Features of Three-Link Centroid Mechanisms and Synthesis of Non-Circular Gears of a Planetary-Rotor Hydraulic Machine." Vestnik IzhGTU imeni M.T. Kalashnikova 27, no. 4 (2024): 22–30. https://doi.org/10.22213/2413-1172-2024-4-22-30.

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The development of modern technologies opens up new possibilities for the production and use of centroid mechanisms, including planetary-rotary hydraulic machines. The problem of profiling non-circular gears of such hydraulic machines has not yet received its final solution. Previously developed methods either did not provide an acceptable tooth shape or required increased clearances in the gearings. In this article, the problem of the mentioned above hydraulic machine design is solved on the basis of analysis of thethree-link centroid mechanismstructure general principles. Features of centroi

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19

Suslov, Nikolay, and Stanislav Chernukhin. "Determination of the working area of a hydraulic excavator." E3S Web of Conferences 177 (2020): 03016. http://dx.doi.org/10.1051/e3sconf/202017703016.

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The article discusses the mechanisms of walking used on dragline excavators. The disadvantages of each mechanism are identified and based on this, the most promising movement mechanism is selected – a three-legged walking mechanism with a hydraulic drive. For this mechanism, the main disadvantages are also identified. The following is a technical solution that allows you to save this mechanism from the main drawback – the need to raise the center of mass of the excavator to a significant height to ensure the maximum step value. The technical solution includes the presence of a flat hydrostatic

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20

Ivanov, Konstantin, Nazym Kanagatova, Amandyk Tuleshov, Kalimagul Bakhiyeva, and Elaman Abussagatov. "INTELLIGENT HYDRAULIC DEVICES: EVOLUTION AND APPLICATION OF ADAPTIVE MECHANISMS." Вестник КазАТК 130, no. 1 (2024): 191–99. http://dx.doi.org/10.52167/1609-1817-2024-130-1-191-199.

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This paper investigates an innovative hydraulic system with two degrees of freedom and a single input, featuring a patented closed hydraulic circuit. The adaptive hydraulic mechanism of this system is analyzed, showcasing a unique force adaptation effect. The speed adjustment of the output piston in the adaptive hydraulic mechanism depends on the current load. Upon reaching a predetermined resistance to movement, the output piston stops, transitioning the mechanism into a single-degree-of-freedom mode, while the input piston continues its motion. The effective force adaptation of the hydraulic

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21

Wang, Ling Hua, Pan Hua Ning, and Chao Gan. "Hydraulic Elastic Vibration Analysis of Hydraulic Turbine Blade." Advanced Materials Research 354-355 (October 2011): 631–35. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.631.

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This paper analyses quantitatively mechanism that hydraulic turbine runner blade tail produces Carmen vortex column, and the blade hydraulic elastic vibration which is produced by Carmen vortex column, also analyses the harms of blade hydraulic resonance, puts forward corresponding preventative measures. For the stable operation of large Francis hydraulic turbine, these measures have reference meaning.

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22

Li, Yuan Hui, Kui Sheng Chen, Jiang Hong Deng, and Xin Yuan Chen. "The Research on Rake-Car’s Driving System of Ore Reclaimer." Applied Mechanics and Materials 300-301 (February 2013): 10–13. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.10.

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Rake-car’s driving system of ore reclaimer originally used crank and connecting rod mechanism as driving mechanism. The driving mechanism got some trouble that parts got severe wear and failure rate of mechanism was high. The hydraulic system is used to drive rake car in view of hydraulic driving system’s advantage. By analysis on existing problem of crank and connecting rod mechanism, the actual working load of equipment is tested and the working situation is analysed. The working situation of the hydraulic system is also analysed by computer simulation. By optimization of the hydraulic syste

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23

Zhou, Ren Bin, Xue Bing Liao, An Qing Ming, and Zheng Zhang. "Study on Leaky Fault Mechanism and Influential Factors of Hydraulic System of Artillery." Applied Mechanics and Materials 456 (October 2013): 50–54. http://dx.doi.org/10.4028/www.scientific.net/amm.456.50.

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Hydraulic technique is more and more applied in weapon equipments; hydraulic system is becoming one of the important subsystems of modern artillery. In this paper, considering effects of operating pressure, temperature and mixed air rate of hydraulic system, the mathematical model of hydraulic fluid internal leakage rate of artillery is built to analyze leaky fault form and leaky reason. The conclusion shows that the internal leakage rate of the hydraulic system of artillery is depend on temperature, pressure, dynamic viscosity, and bulk modulus and thermal expansion coefficient of hydraulic s

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24

Ying, Qiang. "Design and Application of Internal Flat-Pool Measuring Weir." Advanced Materials Research 971-973 (June 2014): 1141–43. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.1141.

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Base on the mechanism of surge tank and measuring weir, an internal flat-pool measuring weir has been developed which can be applied in flow rate measuring area such as the hydraulics labs, the hydraulic engineering model labs and the river regulation project model labs. This new device functions well even with site limitation and unstable current. This passage introduces the mechanism of measuring weir with a few examples.

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25

Varga, Béla. "Modelling of Filtration of Aluminium Melt Through Porous Pressed Filtering Sheets." Materials Science Forum 473-474 (January 2005): 165–70. http://dx.doi.org/10.4028/www.scientific.net/msf.473-474.165.

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The paper analyses via hydraulic modelling the retaining mechanisms of solid non-metal inclusions in the filtration process of aluminium melts through pressed sheets. Experimental determinations via hydraulic modelling show that the variation of filter thickness influences significantly the retaining mechanism of solid non-metal inclusions and implicitly its productivity.

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26

Mazur, Igor, Dmitry Sheludko, and Mykhailo Petrov. "The study of dynamic processes in the hydraulic system of the roll clamp of a two-cone unwinder rolls pipe-welding unit 159-529." System technologies 2, no. 127 (2020): 25–44. http://dx.doi.org/10.34185/1562-9945-2-127-2020-03.

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The work is devoted to the study of dynamic loads arising in the hydraulic system of the clamping mechanism of a roll of a two-cone unwinder of rolls of tubes of a pipe-welding unit 159-529. The operating experience of the two-cone unwinder has shown that one of its drawbacks is the unsatisfactory operation of the roll clamp hydraulic system, in which increased dynamic loads are observed. In the hydraulic system of the roll clamping mechanism, the executive hydraulic cylinder is located at a large distance from the pressure source, therefore, it uses long hydraulic lines. In transient modes of

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27

Wang, Xiao Hong, Qiu Xi Li, and Ya Li Feng. "Life Evaluation of Electro-Hydraulic Servo Valve Based on Wear Mechanism." Applied Mechanics and Materials 494-495 (February 2014): 739–42. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.739.

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Electro-hydraulic servo valve is the key component in electro-hydraulic servo control system, it has high reliable assemblies over a long period of time. This paper utilizes the accelerated degradation testing to evaluate their reliability and life. Firstly, the wear failure mechanism of electro-hydraulic servo valve is analyzed to determine. Then, by modeling the degradation process as a drift Brown Motion, this paper generated the reliability model of the electro-hydraulic servo valve. Finally, the maximum likelihood is used to estimate the degradation data of leakage from the test. The meth

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28

Nabiullin, Rustem, Anatoliy Komissarov, and Viktor Shestakov. "Development of a digital model of the working process of a hydraulic excavator." E3S Web of Conferences 177 (2020): 03012. http://dx.doi.org/10.1051/e3sconf/202017703012.

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In this work, we consider a method for determining the rational values of the structural and operational parameters of the lever - hydraulic mechanisms of hydraulic excavators based on an analysis of the results of a computational experiment obtained at the output of a mathematical model of a workflow. It is shown that the presence of kinematic connections between the engine (hydraulic cylinder) and the links of the lever-hydraulic mechanism causes a change in the relationship between the operating parameters of the engine and the power parameters implemented on the driven members (bucket, han

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29

VRUTKEVYCH, Volodymyr, Vitaly KUSHNIR, and Vadim GANZHA. "MATHEMATICAL MODEL OF THE HYDRAULIC CUTTER DRIVE FOR CUTTING AND UNLOADING THE BLOCK-PORTION OF FEED FROM THE FEED MONOLITH." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 189–95. http://dx.doi.org/10.31891/2307-5732-2022-313-5-189-195.

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The question of improving the efficiency and quality of separating and unloading a block portion of stem fodder from a fodder monolith in a trench storage is under consideration. Modern trends in the development of equipment for unloading stalk fodder from trench storages are analyzed. A fundamentally new design and technological scheme of the cutter for separating and unloading a portion block from a fodder monolith is presented, which allows for the process of unloading stem fodder from trench storages in accordance with zootechnical requirements and taking into account the variable technolo

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30

Zhang, Yue Kan, and Lin Jing Xiao. "Research on Design and Simulation of Four-Bar Linkage Mechanism of Hydraulic Support Based on Virtual Prototype Technology." Applied Mechanics and Materials 170-173 (May 2012): 3539–42. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3539.

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Four-bar linkage mechanism of the hydraulic support is designed by means of analytical and graphical method. A 3D kinematics model with Pro/E software is set up for the hydraulic support. The simulation analysis and interference of the hydraulic support is carried out and the motion path of the four-bar linkage mechanism under the real project condition is shown. The simulation result shows that the design of the four-bar linkage mechanism is reasonable and the designed hydraulic support meets its actual work requirements.

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31

Fei, Ye, Qiong Wu, and Hai Yang Yu. "Dynamic Simulation of Hydraulic Truck Crane Hoisting System Based on AMESim." Applied Mechanics and Materials 29-32 (August 2010): 2031–36. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.2031.

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This paper is made from a certain type of truck crane hydraulic lifting mechanism system as an object, then the second lifting working condition is analyzed. With AMESim, according to the hydraulic system diagram building lifting mechanism hydraulic system simulation model, hereby corresponding simulation conditions is set and the effects of secondary slide response on input signal, hoisting load, discharge and speed of pump, fluid resistance of one-way throttle is studied. This research on truck crane hoisting mechanism hydraulic system provides the theory basis for the design improvement, th

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32

Xu, Hong Hui, Zi Qiang Zhang, Run Dian Li, and Ling Sheng Zeng. "Design and Optimization of Elevator Mechanism in Roller Module Rapid Replacement System." Key Engineering Materials 621 (August 2014): 239–45. http://dx.doi.org/10.4028/www.scientific.net/kem.621.239.

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The elevator mechanism in roller module rapid replacement system had been designed and an optimal math model had been established aiming at the maximum thrust demanded for hydraulic cylinder of the elevator mechanism is too large in this paper. In the model, installation positional parameters of the hydraulic cylinder are used as design variables; the minimum installation distance of the hydraulic cylinder, triangle position relations formed by hydraulic cylinder and design variables, and so on are used as constraint conditions; the maximum thrust of hydraulic cylinder is used as objective fun

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Szkodo, M., A. Stanisławska, and P. Śliwiński. "On the Durability of the Hydraulic Satellite Motor Working Mechanism in Overload Condition." Advances in Materials Science 16, no. 1 (2016): 35–46. http://dx.doi.org/10.1515/adms-2016-0004.

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Abstract The paper presents the newest construction of the hydraulic satellite pump/motor. In this study, the fracture of the hydraulic satellite motor working mechanism is investigated. Factors influencing the durability of satellite working mechanism have been described. The durability of the hydraulic satellite motor working mechanism at a load, corresponding to a pressure of 15 MPa supplied with refined rapeseed oil is very low. Analyses of construction and laboratory tests showed that the satellites teeth wear out the fastest. Results showed that bending fatigue and surface contact fatigu

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Zmuda Trzebiatowski, Marcin A., Paweł Kłosowski, Andrzej Skorek, Krzysztof Żerdzicki, Paweł Lemski, and Mateusz Koberda. "Validation of Hydraulic Mechanism during Blowout Trauma of Human Orbit Depending on the Method of Load Application." Applied Bionics and Biomechanics 2021 (March 4, 2021): 1–12. http://dx.doi.org/10.1155/2021/8879847.

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The more we know about mechanisms of the human orbital blowout type of trauma, the better we will be able to prevent them in the future. As long as the buckling mechanism’s veracity is not in doubt, the hydraulic mechanism is not based on equally strong premises. To investigate the correctness of the hydraulic mechanism’s theory, two different methods of implementation of the hydraulic load to the finite element method (FEM) model of the orbit were performed. The intraorbital hydraulic pressure was introduced as a face load applied directly to the orbit in the first variant, while in the secon

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35

Novoseltseva, M. B., and Evgeny N. Pashkov. "Prospects for Further Rock Cutting Mechanisms Development." Applied Mechanics and Materials 756 (April 2015): 47–52. http://dx.doi.org/10.4028/www.scientific.net/amm.756.47.

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In this research power rock cutting mechanisms are considered. Impact and vibratory impact mechanisms are presented, their design characteristics are given. The new peenless power pulse hydraulic mechanism is considered, its operating principle is described, and the schematic diagram is provided. The new system can be used at building of the new rock-drilling machines with a hydraulic actuator for the intensification of the process of rocks destruction.

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Yin, Zhong Jun, and Yi Xin Hu. "Dynamic Simulation of the Impact Mechanism of Hydraulic Rock Drill Based on AMESim." Advanced Materials Research 452-453 (January 2012): 1296–300. http://dx.doi.org/10.4028/www.scientific.net/amr.452-453.1296.

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Through analysis of the dynamics process of hydraulic rock drill, this paper builds a model of the impact mechanism of hydraulic rock drill with AMESim software, obtains curves of the displacements of the piston and valve core, and gets the pressure of the piston chamber. The dynamic analysis of the results indicates that the model of the impact mechanism of hydraulic rock drill agrees well with the principle of hydraulic rock drill. As a result, this research provides a new theoretical basis and method for the hydraulic rock drill.

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Akhmetov, A. A., Sh A. Akhmedov, B. Zh Astanov, D. U. Kambarova, and R. M. Botirov. "Mechanism Operation for Changing the Rear Axle Clearance of a Universal Row-crop Tractor." Agricultural Machinery and Technologies 15, no. 1 (2021): 41–47. http://dx.doi.org/10.22314/2073-7599-2021-15-1-41-47.

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The authors noted the disadvantages of the 3-wheel universal row-crop tractor. To eliminate them, LLC Design and Technological Center for Agricultural Engineering developed a 4-wheel universal row-crop tractor with variable ground clearance.(Research purpose) To determine the pressure change in the hydraulic system and the transfer time of the rear axle from one type of clearance to another.(Materials and methods) The authors showed that the rear axle clearance could be changed using a special mechanism - with minimal labor costs, without the use of lifting equipment and assembly and dismantli

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Rutkevych, Volodymyr. "INVESTIGATION OF TRANSITIONAL PROCESSES IN THE ADAPTIVE SYSTEM OF HYDRAULIC DRIVES OF THE MECHANISM FOR CUTTING AND UNLOADING STALK FODDER." Vibrations in engineering and technology, no. 2(101) (June 29, 2021): 107–14. http://dx.doi.org/10.37128/2306-8744-2021-2-12.

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The problem of creating an energy-efficient and competitive mechanism for cutting and unloading stalk fodder from trench storage, by developing and justifying the parameters and modes of operation of the adaptive system of hydraulic drives of the mechanism is researched. The principal implementation of the adaptive system of hydraulic drive of the mechanism for cutting and unloading is proposed, in which a spool flow divider is placed between two executive hydraulic motors, which allows to regulate the supply of a U–shaped frame according to the load change which affects the cutting mechanism.

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MORI, Akira, Masahito TAMURA, and Byung Sik CHUN. "Mechanism of hydraulic fracturing in sandy ground." Doboku Gakkai Ronbunshu, no. 388 (1987): 61–70. http://dx.doi.org/10.2208/jscej.1987.388_61.

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Vorobyov, Mykola, and Denis Prokopenko. "Hydraulic pump based on the rolamite mechanism." Ukrainian Journal of Mechanical Engineering and Materials Science 4, no. 1 (2018): 105–15. http://dx.doi.org/10.23939/ujmems2018.01.105.

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Dong, Zhixin, Long Quan, and Jing Yang. "Tracked walking mechanism for large hydraulic excavators." Automation in Construction 96 (December 2018): 88–102. http://dx.doi.org/10.1016/j.autcon.2018.09.005.

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Li, Hongyan, Yaolong Li, Weihua Wang, et al. "Study on the Damage Mechanism of Coal under Hydraulic Load." Processes 12, no. 5 (2024): 925. http://dx.doi.org/10.3390/pr12050925.

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Hydraulic fracturing is extensively utilized for the prevention and control of gas outbursts and rockbursts in the deep sections of coal mines. The determination of fracturing construction parameters based on the coal seam conditions and stress environments merits further investigation. This paper constructs a damage analysis model for coal under hydraulic loads, factoring in the influence of the intermediate principal stress, grounded in the unified strength theory analysis approach. It deduces the theoretical analytical equation for the damage distribution of a coal medium subjected to small

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Точилкин, В. В., and З. А. Болдырев. "MODERNIZATION OF THE HYDRAULIC DRIVE DESIGN FOR SMOOTH OPENING AND CLOSING OF THE APRONS OF THE COKE CAR." Koks i khimiya, no. 3 (September 28, 2023): 42–46. http://dx.doi.org/10.52351/00232815_2023_03_42.

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Рассмотрены конструкции оборудования механизма для открытия и закрытия фартуков коксотушильного вагона. Модернизация гидравлического оборудования механизма обеспечивает равномерную выгрузку протушенного кокса на коксовую рампу и увеличивает ресурс эксплуатации основного насосного агрегата. В работе рассмотрены вопросы, связанные с оценкой работоспособности гидравлической системы и насосной установки механизма открытия и закрытия фартуков коксотушильного вагона. Представлены компоновки новых систем гидравлического привода насосной установки и отдельных механизмов устройства. The designs of the

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Li, Zhao Jun, Xiao Su Liu, Xu Juan Yang, and Tao Mao. "The Dynamic Equations and Response of Hydraulic Excavator’s Working Mechanism System." Advanced Materials Research 199-200 (February 2011): 161–66. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.161.

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By the kinematic and dynamic characteristics analysis of hydraulic excavator’s working mechanism system, the system was divided into three linear varying cross-section beam elements by using Finite-Element Method, then the dynamic differential equation of hydraulic excavator’s working mechanism system was established. The built equation better reflected the intrinsic relationships among the mechanism parameters, load parameters and its nonlinear dynamic properties, and it reflected the dynamic performances which the previous equations didn’t, so it laid the foundation of the further studies of

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Jia, Yu Jing, Da Yu Zhang, Guang Zhen Cheng, and Ying Jun Dai. "Rotating Clamping Device of the Hydraulic Prop Disassemble Machine Based on Hydromechanics." Applied Mechanics and Materials 164 (April 2012): 344–47. http://dx.doi.org/10.4028/www.scientific.net/amm.164.344.

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This article introduces a rotating clamping device, using with the disassemblage machine of monomer hydraulic prop. It was used for clamping hydraulic prop, which was mainly comprised by the coupling mechanism, clamping mechanism and compressing mechanism. The coupling mechanism sleeve was bolted to the spindle. Clamping mechanism located at the end of sleeve, working with the spindle rotation. Compressing mechanism hang around the sleeve, not working with the spindle rotation. Compressing mechanism passed the clamping force through the thrust bearing, clamping the hydraulic prop. It was easy

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Zhao, De Jin, Yan Ling Guo, and Wen Long Song. "Research on the Kinematic Characteristics of Digging Tree Mechanism of Tree Transplanter." Key Engineering Materials 620 (August 2014): 381–87. http://dx.doi.org/10.4028/www.scientific.net/kem.620.381.

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In order to study the kinematic characteristics of the tree transplanter and the hydraulic cylinder, this paper established the model of the tree transplanter with the Cero2.0 software and analyzed kinematic characteristics of the hydraulic cylinder and the tree spade when the tree spade was driven by the hydraulic cylinder with the analytical method. The dynamic simulation curves of the angular velocity and the angular acceleration of the hydraulic cylinder can be obtained with the Matlab software. Then the appropriate format model file was imported into Adams software, and the angular veloci

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КОРОТИЧ, ОЛЬГА, ВІТАЛІЙ НЕЙМАК, ЕЛЛА ЗОЛОТЕНКО, ВАДИМ СУХОСТАВСЬКИЙ та ЮРІЙ МИХАЙЛОВСЬКИЙ. "РОЗРОБКА І ДОСЛІДЖЕННЯ БАГАТОПОЗИЦІЙНОГО ГІДРОАПАРАТУ ТЕХНОЛОГІЧНОЇ МАШИНИ". Herald of Khmelnytskyi National University. Technical sciences 337, № 3(2) (2024): 11–15. http://dx.doi.org/10.31891/2307-5732-2024-337-3-1.

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According to the analysis of the designs of technological machines that have several executive mechanisms that work sequentially according to the technological diagrams and receive movements from the electric drive through chains of mechanical transmission mechanisms consisting of a set of kinematically connected friction pairs and parts, complicated in the design and its production, have reduced reliability in operation. The authors propose a developed hydraulic system for distributing motion to the working mechanisms of the technological machine, which consists of an original design of a mul

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Zhang, Ji Ping, Xin Ping Han, Shi Jin Ma, and Jing Cheng Zhang. "Full Hydraulic and Control Systems Application in Open-Cut Mine Drill." Applied Mechanics and Materials 318 (May 2013): 91–95. http://dx.doi.org/10.4028/www.scientific.net/amm.318.91.

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The LWD-200B full hydraulic open cut mine drill's hydraulic system uses a variable displacement pump with load sensing constant power, load sensitive electromagnetic proportional multi-way directional valve, high torque hydraulic motor overhead direct drive rotary head, a long stroke hydraulic cylinder and steel wire rope and pulley speed lifting system, hydraulic cylinder to drive the unloading rod mechanism, hydraulic motor driving crawler, double hydraulic cylinder lifting the drill frame mechanism, a hydraulic motor driven cable winding drum, hydraulic legs leveling method. Control system

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Chen, Tielin, Liangyi Zhang, and Dingli Zhang. "Simulation of Hydraulic Fracture in Unsaturated Soils with High Degree of Saturation." Advances in Materials Science and Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/981056.

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A numerical simulation approach of hydraulic fracture process, considering the couplings of the stress distribution, the fluid flow of the water-air mixture, the compression and dissolution of air, and the element damage evolution, has been developed to investigate the mechanisms of crack initiation and propagation in porous media during hydraulic fracturing. The concept of homogenized pore fluid has been adopted to represent the water air mixture. A large number of numerical analysis on hydraulic fracturing in clay with incipient injection slot have been carried out to study the mechanism of

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Luo, Jing, and Xue Chun Liu. "Design on Elevate Mechanism of Large-Scale Multi-Stage Direct-Acting Hydraulic Hoist." Advanced Materials Research 816-817 (September 2013): 770–73. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.770.

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For the requirements of volume of cage, load and lifting height, Elevate mechanism of large-scale multi-stage direct-acting hydraulic hoist are adopted when construction hoist lifts material and staff in high-rise construction. Multi-stage expansion of hydraulic cylinder can cause towing oil pipe frequently. Friction and wear between oil pipe and framework is appeared, and oil pipe bursting is occurred. It directly influences both the constructing progress and safety operation. With the ingenious design of hydraulic cylinder and pipe connecting mode, oil pipe towing is avoided telescoping hydr

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