【摘要】 为解决采棉机传统传动方式在采摘过程中容易出现发动机与传动部件的扭矩不匹配，变速过程繁琐、换挡挫顿等缺点，无法完全适应棉花采摘的复杂作业环境等问题，根据采棉机的作业要求，设计了动力换挡液压行走系统。运用AMESim仿真软件验证了采棉机动力换挡液压行走系统的合理性。仿真结果表明：所设计的自动控制模式采棉机动力换挡液压行走系统在换挡时比手动切换模式系统中的压力波动小，流量波动冲击减小43.56%,车速加速时间缩短47.74%,换挡后压力及流量快速稳定，在作业、运输模式换挡时无明显换挡冲击，可满足采棉机的作业要求。更多还原

【Abstract】 In order to solve the shortcomings of the traditional transmission mode of cotton picker in the picking process, such as the torque mismatch between the engine and the transmission parts, the cumbersome speed change process and the stumbling of gear shift, which cannot fully adapt to the complex working environment of cotton picking, according to the operation requirements of cotton picker, the power shift hydraulic walking system was designed.The rationality of power shift hydraulic walking system of cotton picker was verified by AMESim simulation software.The simulation results show that the pressure fluctuation of the designed automatic control mode power shift hydraulic walking system of cotton picker is smaller than that of the manual switching mode system, the impact of flow fluctuation is reduced by 43.56%,and the acceleration time of vehicle speed is reduced by 47.74%;after shifting, the pressure and flow are fast and stable, and there is no obvious shift impact when shifting in operation and transportation mode, which can meet the operation requirements of cotton picker.更多还原