The Simulation And Optimum Design On Retainer Plate Of Axial Piston Pump Based On Multi-body Dynamics

This paper mainly studies and analyses the damage of the retainer plate and the slipper by means of system simulation and theoretical analysis,and obtains the damage reason is collision,and the factors affecting the collision between the slipper and the retainer plate are explored,and then the improvement scheme of the retainer plate is put forward based on the research conclusion.Finally,the improvement scheme of the retainer plate is verified by the combined simulation of ADAMS and AMESim.The following is the main content:(1)The significance and purpose of this research are presented,and it briefly introduces the research and development status of the axial piston pump and multi-body dynamics.(2)The working principle of the axial piston pump is described.Several main backhaul structures are introduced,and the backhaul force i s calculated.Then,the parametric modeling technology of SolidWorks controlled by VB is introduced,and the parametric modeling of the retainer plate is carried out.Finally,the collision theory of the mechanical system is introduced,and the factors aff ecting the collision intensity are obtained,which provides a reference for improving the structure of the retainer plate.(3)The ADAMS multi-rigid-body dynamics and rigid-flexible coupling system simulation of the axial piston pump are carried out.The r otational speed fluctuation and force of the rigid-body the retainer plate are analyzed,and the stress distribution of the flexible-body the retainer plate is analyzed.And concludes that the damage reason is caused by collision.Based on the collision th eory and ADAMS simulation,the impact of the speed of the piston pump,the angle of swash disc and the quality of the retainer plate on collision are analyzed.Then,according to the analysis results and the actual situation,an improvement scheme is proposed to reduce the quality of the retainer plate by increasing the diameter of the spherical socket of the retainer plate and steel ball.Finally,the improved axial piston pump is simulated again,and the results show that the impact force between the improved the retainer plat and the neck of the slipper is improved.(4)A 16PCY14-1B piston pump AMESim system model with time-varying load is established,and then a more real combined simulation system of constant pressure variable piston pump is formed by connecting with the ADAMS model which has been built.The combined simulation of the non-improved piston pump and the improved plunger pump are carried out,and the impact force between the retainer plat and the neck of the slipper under varying load is ob tained.Through analysis and comparison,and the results show that the impact force between the retainer plat and the neck of the slipper obviously decreases,and the vibration law of the improved retainer plat and the non-improved retainer plat are analyzed,and the results show that the vibration of the improved retainer plat is almost unchanged compared with the non-improved retainer plat.The improved scheme does not affect the normal operation of the piston pump,which proves that the improved scheme i s feasible.