Structural Design of a Cross Wobble Plate Driving Axial Piston Pump based on ADAMS and AMESim Co-simulation

Abstract

As the main power unit of hydraulic system , the swash plate axial piston pump has the advantages of stable performance, high rated pressure, high flow rate and high power ta weight ratio. However , he structure of the traditional swash plate axial piston pump is complex. There is reasonable contact between the slipper and the swash plate. There is severe sliding friction between them when the piston pump rotates, which can easily lead to the wear of the slipper Besides, the piston can be easily stuck by the large lateral force between the piston and the cylinder, which will affect the reliability and life of the piston pump. All there shortcomings limit the increase of the rotational speed and pressure of the swash plate axial piston pump. This study is based on a new type of cross wobble plate driving axial piston pump structure, its kinetic model and hydraulic model are established in ADAMS and AMESim respectively, then its liquid-solid coupling model is established in the ADAMS and AMESim co-simulation. The force situation and kinetic characteristics of the key components of the cross wobble plate driving axial piston pump such as piston and cylinder are analyzed and the lateral force variation curve between the pistons and cylinder block is drawn by ADAMS and AMESim co-simulation. Compare the co-simulation results with the theoretical calculation and Matlab calculation results of this model, the structural rationality and motion stability of the cross wobble plate driving axial piston pump is verified and its advantage that it has a significantly lower lateral force value compared to traditional swash plate axial piston pump is shown.