The invention discloses a hydraulic steering and braking control system and an operation machine. The hydraulic steering and braking control system comprises a main pump, a steering oil way and a braking oil way. A priority valve is arranged on an oil supply path of the main pump; the steering oil way is communicated with a priority oil port of the priority valve, and a working oil port of the steering oil way is connected with a steering execution element; the brake oil way is communicated with a bypass oil port of the priority valve, a working oil port of the brake oil way is connected with a brake execution element, a switch valve is arranged on the brake oil way, and when the oil way pressure of the brake oil way is larger than the preset pressure, the switch valve can be opened and depressurizes the brake oil way. The steering oil way and the braking oil way share the same way of pressure oil, the steering and braking functions can be achieved, the pressure oil is firstly supplied to the steering oil way through the priority valve, redundant hydraulic oil is supplied to the braking oil way, pipeline arrangement is reduced, and the system is more compact. And moreover, the switching valve is arranged on the brake oil way, so that the pressure of the brake oil way is controlled within a required range, and the indirect function of a bypass system is realized.
本申请公开一种液压转向制动控制系统及作业机械,该液压转向制动控制系统包括主泵、转向油路和制动油路;主泵的供油油路上设有优先阀;转向油路与优先阀的优先油口连通,转向油路的工作油口连接转向执行元件;制动油路与优先阀的旁路油口连通,制动油路的工作油口连接制动执行元件,制动油路上设有开关阀,在制动油路的油路压力大于预设压力时,开关阀能打开并对制动油路泄压。本申请通过将转向油路和制动油路共用同一路压力油,能实现转向和制动功能,优先阀首先为转向油路供压力油,多余液压油为制动油路供油,又减少了管路布置,系统更紧凑。并且,通过在制动油路设置开关阀,以将制动油路的压力控制在所需范围内,实现为旁路系统间接性功能。
Hydraulic steering brake control system and working machine
液压转向制动控制系统及作业机械
2024-12-13
Patent
Electronic Resource
Chinese
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