Braking method of parking brake system of dump truck
A parking brake and parking brake valve technology, which is applied in the direction of brake transmission, brakes, vehicle components, etc., can solve the problems of low safety performance, parking brake, etc., and achieve the effect of high safety performance
Inactive Publication Date: 2019-03-26
福建省白云电力科技有限公司
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Problems solved by technology
In practice, it often happens that the driver does not operate the parking brake valve after the dump truck stops and turns off, and the dump truck does not perform the parking brake. At this time, if the dump truck stops on the ramp, an accident will occur, and the safety performance is low.
In addition, when the dump truck is parked, it is sometimes necessary to perform dump operations. Since the power of the dump truck is provided by the hydraulic pump, the hydraulic pump needs to be powered by the power take-off port of the gearbox, and the gearbox is driven by the engine. Therefore, the engine of the dump truck cannot be turned off at this time, but the parking brake is also required, that is, the parking brake valve must be manually operated to make the dump truck have a parking brake.
In practice, it will also happen that the dump truck does not operate the parking brake valve during the dump operation, and the dump truck does not perform the parking brake. At this time, if the dump truck stops on the ramp, an accident will occur, and the safety performance is low.
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with the accompanying drawings and given embodiments.
[0015] Such as figure 1 As shown, a braking method of a parking brake system of a dump truck, the braking system includes an accumulator 16, a parking brake valve 15, a parking brake cylinder 13 and a parking brake 12, and the parking brake 12 includes a moving plate 12-1 and static plate 12-2, the oil inlet port P of the parking brake valve 15 communicates with the accumulator 16, the execution port A of the parking brake valve 15 communicates with the rod cavity of the parking brake cylinder 13 connection, the oil outlet T port of the parking brake valve 15 communicates with the fuel tank 1, and the piston rod of the parking brake cylinder 13 is fixedly connected with the moving plate 12-1 of the parking brake 12, and its innovative points are:
[0016] It also includes oil tank 1, filter 2, hydraulic pump 3, safety valve 4, lift reversing val...
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The invention discloses a braking method of a stopping brake system of a dumper. The brake system comprises an energy accumulator, a stopping brake valve, a stopping brake oil cylinder, a stopping brake, an oil tank, a filter, a hydraulic pump, a safety valve, a lifting reversing valve, a lifting oil cylinder, a hydraulic control pneumatic valve, a shuttle valve, a manual flameout switch, an air bag, a flameout air cylinder and a pneumatic control hydraulic valve. The stopping brake system of the dumper is high in safety performance.
Description
technical field [0001] The invention relates to a dump truck, in particular to a braking method for a parking brake system of the dump truck. Background technique [0002] The parking brake system of the dump truck of the prior art is as figure 2 As shown, the braking method is as follows: when the dump truck is parked and the engine is turned off, the parking brake valve is generally operated manually so that the execution port A of the parking brake valve is connected with the oil return port T. The oil return port T of the movable valve communicates with the fuel tank, and the pressure oil in the rod chamber of the parking brake cylinder returns to the fuel tank, so the rod chamber of the parking brake cylinder does not have pressure oil, and the parking brake cylinder operates under the force of the spring Under the action, the piston rod drives the combination of the moving plate and the static plate of the parking brake, so that the dump truck has a parking brake. In...
Claims
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IPC IPC(8): B60T13/22B60P1/16
CPCB60P1/16B60T13/22
Inventor 段建辉
Owner 福建省白云电力科技有限公司