Dissertation > Industrial Technology > Machinery and Instrument Industry > Pump > Volume of the pump > Piston pump

Study on Characteristics of Oil Film for Slipper Pair of Axial Piston Pumps

Author LiYingBing
Tutor XuBing
School Zhejiang University
Course Mechanical and Electronic Engineering
Keywords Axial piston pump Slipper Wedge film Capsize Elastic deformation Pressure field
Type Master's thesis
Year 2011
Downloads 262
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Through the swash plate axial piston reciprocating plunger to push the pump suction and discharge oil pressure build-up processes and systems. Slipper pair is connected to the swash plate and the plunger of the intermediate links, in addition to withstand the high pressure oil from the piston chamber axial force, the sliding shoe circumferential movement caused by centrifugal torque and rotate with the cylinder causes friction torque generated swash plate surface of the shoe relative to a certain angle, the shoe under the action of the pressure field in the film itself will elastically deformed under the action of the two will result in the shoe and the swash plate sealing surface with a wedge-shaped, so that the slide Pair of film thickness Field complicated. This paper studies the results: axial piston pump slipper is not entirely based on the structure and size hydrostatic bearing theory to design, but considering the film's dynamic pressure effect and squeeze effect. In this paper slipper film thickness values ??at three points on the film thickness Slipper field modeling, build a gap wedge film flow model. Slipper for overturning film pressure field were analyzed and found slip soles surface \Comparing the simulation results can be found in a shoe after optimization overturning level, stability, and the minimum film thickness aspects of performance are good. This paper is structured as follows: The first chapter introduces the axial piston friction, especially lubrication characteristics Slipper technical characteristics. Research relevant research institutions at home and abroad for axial piston pump lubrication characteristics Slipper research status, determined on the basis of the research projects ideas and content, and pointed out the difficulty of the research projects. Chapter II of the axial piston pump slipper the force and motion equations for modeling and analysis. Research shoe forms in different constraints, the film pressure field under the elastic deformation. The third chapter, the chapter established Wedge Slipper film model, the hydrostatic bearing Slipper Dominican fixed variable damping resistor composition flow pressure negative feedback regulation system modeling, as a boundary condition on the wedge-shaped gap flow down boots force / torque conditions and overturning Slipper film model to study the coupling between, and finally through MATLAB programming numerically solving the coupling between film Slipper wedge pressure field model. Chapter IV of the partial wear slipper overturning numerical simulation analysis, by improving slip soles surface pressure field method proposed overturning slipper structure was verified by experiment. Chapter V, the idea to build feature film Slipper test platform. Chapter VI summarizes the main research work, given the relevant research findings, and future research are discussed.

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