Abstract: Aiming at the problems of large impact of starting pressure, unstable acceleration process and long debugging period in current rotary system of hydraulic excavator, a simulation method of rotary system of hydraulic excavator based on AMESim is proposed. The pressure and flow characteristics of the motor under two different area gradients of the throttle grooves are compared and analyzed. The simulation results show that the segmenting control of the inlet flow of the rotary motor can effectively avoid the start overflow and improve the ride comfort during acceleration. AMESim 3D Mechanical can realize the simulation research of the actual working conditions of the rotary system of hydraulic excavator, which avoids the problem of multidisciplinary joint error traceability and shortens the test cycle of the whole vehicle.

Key words: AMESim; Hydraulic excavator; Rotary system; Inertial load; Simulation analysis

摘要： 针对当前液压挖掘机回转系统启动压力冲击大、加速过程不平稳、回转工况调试周期 长的问题，文章提出了一种基于 AMESim 液压挖掘机回转系统仿真方法。对比分析了两种不 同节流槽面积梯度下快速回转时马达的压力、流量特性。仿真结果表明，回转马达采用进油 流量分段控制可有效避免启动溢流，提升加速过程的平顺性；AMESim 软件 3D Mechanical 可实现液压挖掘机回转系统实际工况的仿真模拟研究，避免了多学科联合误差难溯源的问题， 缩短整车试验周期。

关键词: AMESim；液压挖掘机；回转系统；惯性负载；仿真分析