The invention provides a flow blocking structure of a brake valve, and belongs to the technical field of hydraulic braking. The problem that an existing valve body is poor in sealing performance is solved. The flow blocking structure of the brake valve comprises a valve body provided with an oil inlet hole and a working oil hole, an inner cavity of the valve body is connected with a piston assembly in a sliding mode, and an oil supply flow channel communicated with the oil inlet hole and the working oil hole is formed between the piston assembly and the wall of the inner cavity of the valve body. The flow choking structure further comprises a compression spring, a flow choking piece in linkage with the piston assembly and a sealing assembly abutting against the wall face of the oil supply flow channel, the valve body is provided with a limiting face located at the communicating position of the oil inlet hole and the oil supply flow channel, one end of the compression spring acts on the piston assembly, and the other end of the compression spring acts on the sealing assembly to enable the sealing assembly to abut against the limiting face. The flow choking piece is located on the side, abutting against the limiting face, of the sealing assembly, and an oil passing flow channel communicating with the oil inlet hole and the oil supply flow channel is formed between the flow choking piece and the sealing assembly. The flow choking structure of the brake valve has the advantage of improving the sealing performance in the valve body.
本发明提供了一种制动阀的阻流结构,属于液压制动技术领域。它解决了现有阀体内密封性差的问题。本制动阀的阻流结构包括开设有进油孔和工作油孔的阀体,阀体的内腔滑动连接有活塞总成,活塞总成与阀体的内腔壁之间形成有连通进油孔和工作油孔的供油流道,阻流结构还包括压缩弹簧、与活塞总成联动的阻流件和抵靠供油流道壁面的密封组件,阀体具有位于进油孔和供油流道连通处的限位面,压缩弹簧一端作用于活塞总成,且另一端作用于密封组件使密封组件抵靠限位面,阻流件位于密封组件抵靠限位面的一侧,且阻流件与密封组件之间形成有连通进油孔和供油流道的过油流道。本制动阀的阻流结构具有提高阀体内密封性的优点。
Flow choking structure of brake valve
一种制动阀的阻流结构
2023-08-25
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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