The invention provides a pressure relief structure of a brake valve, and belongs to the technical field of brake valves. The power-assisted brake valve solves the technical problem that an existing power-assisted brake valve is unstable in pressure relief. The pressure relief structure of the brake valve comprises a confluence section located on the end face, close to a main piston, of a balance piston, an oil drainage hole located in the peripheral face of the balance piston and a one-way assembly located between the balance piston and the main piston and used for blocking the communication state of the confluence section and an oil inlet hole. The multiple oil drainage holes are communicated with the confluence section, a movable rod penetrating through the balance piston is slidably connected into the balance piston, and one end of the movable rod is located in the confluence section all the time and can move towards the one-way assembly in the axial direction to jack up the one-way assembly. And ports, communicated with the confluence section, of the oil drainage holes are arranged at intervals in the circumferential direction of the movable rod. The brake valve is favorable for ensuring the stable pressure relief state.
本发明提供了一种制动阀的卸压结构,属于制动阀技术领域。它解决了现有助力制动阀卸压不稳定的技术问题。本制动阀的卸压结构,卸压结构包括位于平衡活塞靠近主活塞的端面上的汇流段、位于平衡活塞外周面的泄油孔以及位于平衡活塞和主活塞之间且阻断所述汇流段与进油孔连通状态的单向组件,所述泄油孔有若干个且均与所述汇流段连通,所述平衡活塞内滑动连接有贯穿该平衡活塞的活动杆,所述活动杆的一端始终位于所述汇流段内且可沿轴向朝所述单向组件运动并将该单向组件顶启,所述泄油孔有若干个且泄油孔与汇流段连通的端口绕所述活动杆的周向间隔布置。本制动阀利于保证卸压状态稳定。
Pressure relief structure of brake valve
一种制动阀的卸压结构
2023-08-29
Patent
Elektronische Ressource
Chinesisch
BRAKE CONTROL SERVO VALVE HAVING RAPID PRESSURE RELIEF PROTECTION
Europäisches Patentamt | 2023
|Brake control servo valve with rapid pressure relief protection function
Europäisches Patentamt | 2021
|