The invention relates to the technical field of hydraulic control, in particular to an EHA closed hydraulic system and pump valve integrated device which comprises a two-way pump, a motor, a first main oil way, a second main oil way, an energy accumulator and a symmetrical execution unit. Two pressure suction oil ports of the two-way pump are respectively communicated with the main oil path I and the main oil path II; the two-way pump is communicated with the energy accumulator; the device further comprises a first one-way balance valve, a second one-way balance valve and an oil filling port. The motor is connected with the valve block; the energy accumulator, the first one-way balance valve and the second one-way balance valve are located in the valve body. Two pressure suction oil ports of the two-way pump communicate with the first main oil way and the second main oil way through an oil inlet and outlet A and an oil inlet and outlet B correspondingly, and an oil drainage hole communicates with the energy accumulator. The oil filling hole is communicated with the energy accumulator and the two-way pump through the one-way valve. According to the scheme, the loop principle is greatly simplified; the size of the closed hydraulic system can be reduced, the problem that a quadruped robot is too large in size and appearance and inconvenient to load and apply is solved, and standing of any stable posture in the shutdown state is achieved.
本发明涉及液压控制技术领域,具体为一种EHA闭式液压系统及泵阀一体装置,包括双向泵、电机、主油路一、主油路二、蓄能器和对称执行单元;双向泵的两个吸压油口分别与主油路一和主油路二连通;双向泵与蓄能器连通;还包括单向平衡阀一、单向平衡阀二以及充油口;电机与阀块连接;蓄能器、单向平衡阀一和单向平衡阀二位于阀体内;双向泵的两个吸压油口分别通过进出油口A、进出油口B与主油路一、主油路二连通,泄油孔与蓄能器连通;充油孔通过单向阀与蓄能器和双向泵连通,本方案中回路原理上大大的简化;有助于降低闭式液压系统的体积,解决了四足机器人体积外形过大,不便于负重和应用的问题,实现了停机状态下任意稳定姿态的站立。
EHA closed hydraulic system and pump valve integrated device
一种EHA闭式液压系统及泵阀一体装置
2023-05-05
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B62D MOTOR VEHICLES , Motorfahrzeuge / F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten |
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