The invention relates to the technical field of hydraulic systems of engineering machinery, and in particular to a hydraulic walking motor and engineering machinery. The hydraulic walking motor includes a shell, a brake cylinder and a pressure reducing component arranged inside the shell; an oil supply channel capable of transporting hydraulic medium to the brake cylinder is arranged in the shell,and an oil chamber of the brake cylinder and the oil supply channel form a pressure reducing oil supply circuit; and the pressure reducing component is arranged in the pressure reducing oil supply circuit, so that the pressure of the hydraulic medium in the brake cylinder is maintained below a predetermined pressure. The engineering machinery includes the hydraulic walking motor. According to thehydraulic walking motor and the engineering machinery, the pressure of the hydraulic medium in the brake cylinder is maintained below a predetermined pressure; therefore, the medium pressure in the oil chamber in the brake cylinder is significantly reduced, and then the pressure of the hydraulic medium applied to the brake cylinder and the shell is significantly reduced; and therefore, the structural reliability of the hydraulic walking motor is improved, and the service life is prolonged.
本发明涉及工程机械的液压系统技术领域,尤其涉及一种液压行走马达和工程机械。该液压行走马达包括壳体、设置在壳体内部的制动油缸和减压组件;壳体内设置有能够向制动油缸输送液压介质的供油通道,制动油缸的油腔和供油通道形成减压供油回路;减压组件设置于减压供油回路,以使制动油缸内的液压介质压力维持在预定压力以下。该工程机械包括该液压行走马达。该液压行走马达和该工程机械,使制动油缸内的液压介质压力维持在预定压力以下,显著降低了制动油缸内的油腔内的介质压力,从而随之显著降低了液压介质施加至制动油缸、壳体的压力,进而该液压行走马达结构可靠性得以提高、使用寿命得以延长。
Hydraulic walking motor and engineering machinery
液压行走马达和工程机械
2020-07-17
Patent
Electronic Resource
Chinese
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