The invention discloses a gear and parking brake linkage control device of a vehicle and a working method thereof. The gear and parking brake linkage control device comprises a parking brake, a parking hydraulic cylinder, a manual reversing valve, a gear selecting operation valve, a forward gear clutch, a backward gear clutch, a power element, a shuttle valve, a first hydraulic control reversing valve and a second hydraulic control reversing valve; an execution port A of the gear selecting operation valve is communicated with the forward gear clutch and the shuttle valve, an execution port B of the gear selecting operation valve is communicated with the backward gear clutch and the shuttle valve, an oil outlet of the shuttle valve is communicated with an oil inlet of the first hydraulic control reversing valve, and the first hydraulic control reversing valve is communicated with a control port of the second hydraulic control reversing valve; an execution port of the manual reversing valve is respectively communicated with a control port of the first hydraulic control reversing valve and the second hydraulic control reversing valve, and the second hydraulic control reversing valve is communicated with the parking hydraulic cylinder; and the manual reversing valve, the gear selecting operation valve and the second hydraulic control reversing valve are all communicated with the power element. According to the gear and parking brake linkage control device, parking braking can be automatically released after a forward gear or a backward gear is engaged.
车辆的挡位与停车制动的联动控制装置及其工作方法,包括停车制动器、停车液压缸、手动换向阀、选挡操作阀、前进挡离合器、后退挡离合器、动力原件、梭阀、第一液控换向阀和第二液控换向阀;选挡操作阀的执行口A分别与前进挡离合器和梭阀连通,选挡操作阀的执行口B分别与后退挡离合器和梭阀连通,梭阀的出油口与第一液控换向阀的进油口连通,第一液控换向阀与第二液控换向阀的控制口连通;手动换向阀的执行口分别与第一液控换向阀的控制口和第二液控换向阀连通,第二液控换向阀与停车液压缸连通;手动换向阀、选挡操作阀和第二液控换向阀均与动力原件连通。本发明可实现挂前进挡或后退挡后停车制动可以自动解除。
Gear and parking brake linkage control device of vehicle and working method thereof
车辆的挡位与停车制动的联动控制装置及其工作方法
2020-12-25
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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