【摘要】 为减少非最高负载执行器控制阀口存在的节流损失，同时减少执行机构的重力势能及动能以节流损失形式耗散，提出通过非驱动腔压力调控原理减小负载差异导致的节流损失，并回收执行机构动势能，实现液压挖掘机系统低压损动力分配与传递；建立系统数字样机进行仿真分析。结果表明：新系统在保证控制性能的基础上，能通过压力调控提高非最高负载执行器非驱动腔压力，进而提高驱动腔压力，减小节流损失并回收能量；新系统还能回收执行机构动势能，在一个挖掘循环内，整机节能比例为13.22%。更多还原

【Abstract】 In order to reduce the throttling loss existing in the control valve port of the non-highest load actuator, and reduce the gravitational potential energy and kinetic energy of the actuator to be dissipated in the form of throttling loss, the principle of non-driven chamber pressure regulation was used to reduce the throttle loss caused by the load difference and to recover the working devices’ kinetic and potential energy to realize the low-pressure loss power distribution and transmission of the hydraulic excavator system; a system model was established for simulation analysis.The result shows that by using the new system, on the basis of ensuring the control performance, the pressure of the non-driven chamber of the non-highest load actuator can be increased through pressure regulation, thereby the pressure of the driven chamber can be increased, the throttle loss can be reduced and the energy can be recovered; the new system can be use to recover the actuators’ kinetic and potential energy, the energy-saving ratio of the whole machine to complete an excavation cycle is 13.22%.更多还原