基于SimulationX的挖掘机高压斗杆缸缓冲装置的仿真与试验研究

SimulationX-based study on cushion devices of excavator high pressure arm cylinder and tests

为研究高压油缸的行程末端缓冲装置的缓冲性能,获得油缸缓冲行程阶段的压力、流量等参数,以一款国产挖掘机高压斗杆缸作为研究对象,将计算机仿真技术应用到实际工程研究中。基于SimulationX仿真软件搭建了挖掘机工作装置液压系统的仿真模型(特别是缓冲模型),开展了液压-机械多体动力学联合仿真;在典型工况下对液压挖掘机斗杆缸的压力、流量等参数进行了试验,通过比对仿真结果,对控掘机液压系统仿真的准确性进行了评价。结果表明,所建立的仿真模型是合理的、科学的,该仿真技术在工程领域更进一步的推广是可行的。

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.