Engineering vehicle parking brake system and its control method
A technology for parking brakes and engineering vehicles, which is applied in the directions of brakes, brake transmissions, vehicle components, etc., can solve the problems of engine stall, consumption of energy, and backward rolling, so as to avoid starting to roll and reduce energy. Consumption, the effect of improving safety
Active Publication Date: 2021-01-12
GUANGXI LIUGONG MASCH CO LTD
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Problems solved by technology
[0003] The invention provides a parking brake system of an engineering vehicle and its control method. The system and its control method can solve the problem that the existing parking brake system of an engineering vehicle requires manual operation of the brake handle when parking and starting on a slope. energy, and there is a slope start shock or engine flameout, and even the problem of rolling backwards
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[0015] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:
[0016] figure 1 , figure 2 The engineering vehicle parking brake system shown includes a parking brake that has a piston and a spring energy storage brake air chamber 2-1 and provides a pressure gas source for the spring energy storage brake air chamber 2-1 through an air reservoir 1 2. There is a handbrake valve 3 between the air reservoir 1 and the parking brake 2. The handbrake valve 3 is a normally closed handbrake valve; An electric proportional control valve 6 is arranged between them, the air inlet of the electric proportional control valve 6 is connected with the air inlet of the handbrake valve 3, and the exhaust port of the electric proportional control valve 6 is connected with the air outlet of the handbrake valve 3; The proportional control valve 6 is a normally closed electrical proportional control valve; the control end of the electri...
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The invention discloses a parking brake system of an engineering vehicle and a control method thereof; the system comprises a parking brake which provides a pressure air source for a spring energy storage brake air chamber through an air storage cylinder, a hand brake valve is arranged between the air storage cylinder and the parking brake, and an electric proportional control valve is arranged between an air inlet port and an air outlet port of the hand brake valve. The control end of the electric proportional control valve is connected with the engine speed sensor, the vehicle speed sensor,the accelerator pedal position sensor, the clutch travel sensor, the transmission neutral position sensor and the service brake valve pressure sensor of the engineering vehicle respectively through the PLC controller; the electric proportional control valve is connected with the engine speed sensor, the vehicle speed sensor, the accelerator pedal position sensor, the transmission neutral positionsensor and the service brake valve pressure sensor of the engineering vehicle; the invention has a control method for starting the vehicle and decelerating the vehicle until the vehicle is parked. Thepresent invention can solve the problems of manual operation of the brake handle during parking and ramp starting of the existing engineering vehicle, which not only consumes human energy, but also has ramp starting impact or engine flameout, and even rolls backward, when the parking and ramp starting system of the existing engineering vehicle exists.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a parking brake system for an engineering vehicle and a control method thereof. Background technique [0002] The engineering vehicle parking brake system is a device that gives the vehicle a resistance to prevent the vehicle from slipping when the vehicle is parked. The existing engineering vehicle parking brake system includes a spring energy storage brake chamber and a The parking brake provides a pressure source for the spring energy storage brake air chamber through the air storage tank. A hand brake valve is provided between the air storage tank and the parking brake. The hand brake valve is provided with a brake handle; engineering vehicles need to be parked for a long time When the brake handle is pulled, the exhaust port of the hand brake valve is opened, so that the air in the spring energy storage brake air chamber is completely emptied, and the parking b...
Claims
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IPC IPC(8): B60T13/68B60T7/12
CPCB60T7/12B60T13/683
Inventor 莫思剑李立勇杨明罗芸
Owner GUANGXI LIUGONG MASCH CO LTD
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