Numerical Simulation of Overturning Phenomenon of Axial Piston Pump Slipper Pair

Xu, Bing

doi:10.3901/jme.2010.20.161

Cited by 14 publications

(5 citation statements)

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“…17th Hydrodynamic Electromechanical Control Engineering When slippers rotate at high speed, there is oil flow between slipper and swash-plate because of the differential pressure and the shear movement. Professor Xu Bing from ZheJiang university has made deep analysis about the problem [15]. Based on his study, the complete mathematic model of the slipper power loss is established and solved in this paper.…”

Section: Oil Film Analysis Of Slippermentioning

confidence: 99%

Power Loss of Slipper within Axial Piston Pump

Wang

Jiang

Sun

2015

AMM

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The pair between slipper and swash-plate is an important friction pair in the axial piston pump. Due to quick relative velocity, alternating load, numerous slippers, and high contact pressure between the friction surfaces, the wear-out and fatigue failure constantly occurs, which is one of the key factors affecting reliability of the piston pump. It is of fundamental significance to investigate the mechanism of slipper power loss and to find an appropriate method to improve the lubrication of the slipper. Here, the model of friction power loss between slipper and swash-plate is established, and the friction power loss between slipper and swash-plate is solved and comparatively analysed. Finally, the correctness of theoretical analysis and simulation results are verified by experiments.

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Section: Oil Film Analysis Of Slippermentioning

confidence: 99%

Power Loss of Slipper within Axial Piston Pump

Wang

Jiang

Sun

2015

AMM

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“…In this process, the outer edge of the slipper is easily subjected to solid contact or collision with the swash plate surface, causing friction and wear on the outer edge of the slipper and destroying the original static pressure support structure. Thus, the overall performance and life of the piston pump are reduced [10][11][12][13][14]. Due to the lack of clear research on the partial wear motion law of the slipper pair of the LDPP, in order to promote the development of the LDPP and improve its overall performance, it is very meaningful to study the motion law of the slipper pair in its actual working condition.…”

Section: Introductionmentioning

confidence: 99%

Study on the Lubricating Characteristics of the Oil Film of the Slipper Pair in a Large Displacement Piston Pump

Xu,

Chen,

et al. 2023

Lubricants

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Due to the large size of the bottom surface, the slipper pair of the large displacement piston pump (LDPP) will form a larger linear speed difference in the inner and outer positions of the slipper relative to the center of the swash plate during high-speed rotation. It is more likely to lead to the slipper overturning, which makes the slipper partially worn. To make improvements, the comprehensive performance of the slipper pair of the LDPP, the motion law of the slipper pair of the LDPP was explored. Firstly, a mathematical model of the oil film thickness of the slipper pair of the LDPP under the state of residual compression force is established, based on the consideration of the linear velocity difference formed by the high-speed rotation of the large bottom surface slipper and the theory of dynamics and thermodynamics. Secondly, the impact of rotational speed, piston chamber pressure and oil temperature on the oil film thickness of the slipper pair was simulated and analyzed. Finally, to measure the oil film thickness of the slipper pair, oil film thickness measuring equipment was created, and the accuracy of the mathematical model was verified. The study revealed the changing rules of the oil film thickness and tilt angle of the bottom surface of the slipper pair under various working conditions. The consistency of the simulation and test findings demonstrates that the mathematical model can accurately describe influencing elements and changing rules of the LDPP slipper pair’s oil film lubrication characteristics.

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“…In the research field of piston pump slipper pair, Xu et al 20 established the simulation model of oil film coupling relationship of slipper pair by MATLAB programming, and proposed a new method to study the dynamic characteristics of oil film of slipper pair. Tang et al 21 in order to improve the lubrication characteristics of the slipper pair of axial piston pump, put forward a formula of thermal balance gap of slipper pair based on the law of energy conservation of control body.…”

Section: Introductionmentioning

confidence: 99%

Lubrication characteristics analysis of slipper pair of digital valve distribution axial piston pump

Zhao

Wang

et al. 2022

Advances in Mechanical Engineering

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The digital valve distribution axial piston pump is a swashplate rotary piston pump, the force on slippers is different from that of traditional axial piston pump. At the same time, the control strategy of the distribution valve will affect the pressure in the piston cavity, and then affect the oil film lubrication. According to these characteristics, the modeling method of oil film thickness field was proposed, and the force model of slipper pair and the numerical solution model of oil film lubrication of digital valve distribution axial piston pump were further established. The influence of swashplate rotation speed, swashplate inclination angle, and distribution valve control strategy on the characteristics of oil film lubrication were solved. The results show that the established thickness field model of oil film conforms to the stress characteristics of the slipper of the valve distribution pump. Increasing the swashplate rotation speed and the swashplate inclination angle is beneficial to optimize the oil film lubrication performance. The discharge valve should be opened in advance or closed in delay, which is beneficial to prevent eccentric wear and adhesion wear of slippers. The research results can provide theoretical basis for the optimal design of valve distribution axial piston pump.

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Numerical Simulation of Overturning Phenomenon of Axial Piston Pump Slipper Pair

Cited by 14 publications

References 0 publications

Power Loss of Slipper within Axial Piston Pump

Power Loss of Slipper within Axial Piston Pump

Study on the Lubricating Characteristics of the Oil Film of the Slipper Pair in a Large Displacement Piston Pump

Lubrication characteristics analysis of slipper pair of digital valve distribution axial piston pump

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