Parking brake device of vehicle
A technology of parking brake and parking brake, which is applied in the field of vehicles and can solve the problems that automatic parking braking cannot be realized.
Pending Publication Date: 2018-06-19
袁菊花
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Problems solved by technology
The parking brake system of the above-mentioned heavy-duty forklift can not only automatically perform the parking brake after the engine is turned off, but also manually select whether to perform the parking brake when the engine is not turned off.
Method used
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Embodiment Construction
[0011] The present invention will be further described below in conjunction with the accompanying drawings and given embodiments.
[0012] Such as figure 1 As shown, a parking brake device for a vehicle includes a parking brake cylinder 1, a parking brake 2 and an accumulator 3; the parking brake 2 includes a moving plate 2-1 and a stationary plate 2-2; the moving plate 2-1 is fixedly connected with the piston rod 1-1 of the parking brake cylinder 1; it also includes a manual reversing valve 5, a hydraulic control reversing valve 6, a hydraulic pump 7 and an oil tank 9; the oil inlet of the manual reversing valve 5 Port P is connected with the accumulator 3, and the execution port A of the manual reversing valve 5 is connected with the oil inlet P port of the hydraulic control reversing valve 6; the execution port A of the hydraulic control reversing valve 6 is connected with the parking The rod cavity of the brake cylinder 1 is connected, the oil outlet T port of the hydraul...
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A parking brake device of a vehicle comprises a parking brake oil cylinder, a parking brake and an energy accumulator. The parking brake comprises a movable pad and a static pad; the movable pad is fixedly connected with a piston rod of the parking brake oil cylinder; the parking brake device further comprises a manual reversing valve, a hydraulic control reversing valve, a hydraulic pump and an oil tank; an oil inlet P of the manual reversing valve communicates with the energy accumulator, and an execution port A of the manual reversing valve communicates with an oil inlet P of the hydrauliccontrol reversing valve; and an execution port A of the hydraulic control reversing valve is connected with a rod cavity of the parking brake oil cylinder, an oil inlet of the hydraulic pump communicates with the oil tank, and an oil outlet of the hydraulic pump communicates with a control port K of the hydraulic control reversing valve. By the adoption of the parking brake device, the vehicle canbe automatically parked and braked after stalling, and whether the vehicle is parked and braked or not can be manually selected when the vehicle does not stall.
Description
technical field [0001] The invention relates to a vehicle, in particular to a parking brake device for the vehicle. Background technique [0002] At present, more and more vehicles adopt wet brakes, and the principle of parking brake of vehicles using wet brakes is spring brake hydraulic release. Chinese patent document CN201633718U (application number 201020153354.7) discloses that the parking brake adopted in the parking brake system of the heavy-duty forklift is the above-mentioned parking brake released by the hydraulic pressure of the spring brake. The oil inlet port of the solenoid valve 3 of the parking brake system of the heavy-duty forklift is connected with the accumulator 1, the execution port of the solenoid valve 3 is connected with the parking brake cylinder 2, and the terminal of the solenoid valve 3 is connected to a rocker switch through a wire. . When the rocker switch is disconnected, the terminal of the solenoid valve 3 loses power, and the execution po...
Claims
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IPC IPC(8): B60T13/16B60T13/20
CPCB60T13/168B60T13/20
Inventor 袁菊花
Owner 袁菊花