CHEN Xun1, ZHOU Jun1, GAI Li-hong2, ZHANG Yan-liang1, LI Wei1

(1.School of Mechanical Engineering, Shandong University, Jinan 250061, China;

2.Shandong Academy of Environment Science Environmental Engineering Co., Ltd., Jinan 250013, China)

Abstract: In order to study the cushion performance of cushion devices in the ends of high pressure cylinder and obtain the parameters of flow and pressure during cylinder cushion stroke, high pressure arm cylinder of excavator(a domestic brand) was regarded as research object, applying computer simulation technology to engineering research. The whole simulation model (especially cushion model of the arm cylinder) of excavator hydraulic system was built based on simulation software SimulationX, multi-domain co-simulation of mechanism, hydraulic and multi-body dynamics was carried out. Meanwhile, tests were run on real excavator under typical operating conditions to record pressure and flow parameters of the high pressure cylinder. The accuracy of simulation results were evaluated by comparing with the test ones. The comparison results show that the simulation model is scientific and reasonable, further popularizing of computer simulation technology in engineering field is feasible.

Key words: high pressure arm cylinder, cushion devices, simulation technology; tests; SimulationX