Parking brake device of lift truck
A technology of parking brake and lift car, applied in the field of lift car, can solve problems such as danger
Inactive Publication Date: 2021-01-08
常路华
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Problems solved by technology
However, in practice, it often happens that the driver forgets to apply the parking brake when the lift truck performs lifting operations, that is, the driver forgets to operate the manual reversing valve 34 so that the execution port A of the manual reversing valve 34 communicates with the oil outlet T, that is, The oil inlet P of the manual reversing valve 34 is still in the state of communicating with the execution port A, and the lift truck is in the parking brake release state. At this time, the lifting operation will be dangerous.
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 braking device for a lift vehicle includes a generator 1, a regulator 2, a diode 3, a battery 4, a solenoid valve 5, an accumulator 31, a parking brake 32, a parking hydraulic cylinder 33, and a manual reversing valve 34 and fuel tank 35; the parking brake 32 includes several moving plates 32-1 and several stationary plates 32-2; the moving plates 32-1 and the stationary plates 32-2 are arranged alternately; the parking hydraulic cylinder 33 The right end of the piston rod 33-1 is offset against the moving plate 32-1. The oil inlet P of the manual reversing valve 34 communicates with the accumulator 31, and the execution port A of the manual reversing valve 34 communicates with the oil inlet P of the electromagnetic valve 5; The rod cavity of the hydraulic cylinder 33 is communicated; the oil outlet T ...
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A parking brake device of a lift truck comprises a generator, a regulator, a diode, a storage battery, an electromagnetic valve, an energy accumulator, a parking brake, a parking hydraulic cylinder, amanual reversing valve and an oil tank. The output end of the regulator, the diode and the storage battery are electrically connected in sequence to form a loop, the anode of the diode is electrically connected with the positive electrode of the output end of the regulator, and the cathode of the diode is electrically connected with the positive electrode of the storage battery; and one end of the wiring end K of the electromagnetic valve is electrically connected to a connection point of the positive electrode of the output end of the regulator and the anode of the diode. Magnetic steel anda proximity switch are further included; the other end of the wiring end K of the electromagnetic valve is electrically connected with one end of the proximity switch, and the other end of the proximity switch is electrically connected to a connecting point of the negative electrode of the storage battery and the negative electrode of the output end of the regulator; and the magnetic steel corresponds to the proximity switch. Automatic parking braking can be achieved during flameout, and automatic parking braking can also be achieved during lifting operation of the lift truck.
Description
technical field [0001] The invention relates to a lift car, in particular to a parking brake device for a lift car. Background technique [0002] Chinese patent document CN109050501A (application number 201810976954.4) discloses the parking brake control device of the vehicle. After the engine is turned off, neither the generator 1 nor the battery 4 can supply power to the terminal K of the solenoid valve 5 to realize the automatic parking brake after the vehicle is turned off; When the flame is not turned off, the generator 1 supplies power to the terminal K of the solenoid valve 5 through the regulator 2. At this time, the oil inlet P of the solenoid valve 5 communicates with the execution port A, and it is manually selected whether to perform parking braking. When the driver needs to perform parking brake, he only needs to operate the manual reversing valve 34 so that the execution port A of the manual reversing valve 34 communicates with the oil outlet T, and at this mom...
Claims
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IPC IPC(8): B60T13/14B60T13/66B60T13/68B60T7/12
CPCB60T7/12B60T13/141B60T13/662B60T13/686
Inventor 常路华
Owner 常路华