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为了回收液压挖掘机回转制动过程中以热能形式损耗的转动动能,节约能源并降低液压系统的油温以提高设备的可靠性和使用寿命,以回转装置的工作原理和制动能量损失为基础,通过蓄能器的选型在AMESim中建立了基于蓄能器的能量回收系统模型;在回收系统加入了逻辑信号控制系统,通过角速度、角加速度的反馈信号和逻辑运算优化了能量回收与释放的控制过程;同时,为了减少转台制动过程中的液压冲击和摆动,提出了一种纯液压防反转的控制方法。研究结果表明:系统优化后节能比率为15.12%,回转装置的反转角度约为6.28×10-4 rad;该系统能够实现能量的回收和释放,并有效节约能源,通过防反转控制可以有效减小回转平台的摇摆。
In order to recover the rotating kinetic energy loss of the hydraulic excavator in the form of thermal energy, save energy and reduce the oil temperature of the hydraulic system to improve the reliability and service life of the equipment, the working principle of the rotary device and the loss of braking energy are taken as a basis , An accumulator-based energy recovery system model was established in AMESim through the selection of accumulators; a logic signal control system was added to the recovery system to optimize the energy recovery and release through the feedback signals of angular velocity, angular acceleration and logic operations At the same time, in order to reduce the hydraulic shock and swing during turntable braking, a pure hydraulic anti-reverse control method is proposed. The results show that the energy saving ratio of the system is 15.12%, and the reversing angle of the rotary device is about 6.28 × 10-4 rad. The system can recover and release energy and save energy effectively, which can be effectively controlled by anti-reverse control Reduce the swing of the swivel platform.