Braking device of semitrailer
A braking device and semi-trailer technology, applied in the direction of automatic starting devices, etc., can solve the problems of releasing the brake and inconvenient
Inactive Publication Date: 2020-10-16
常路玉
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- Abstract
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- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The braking device of the above-mentioned semi-trailer cannot automatically release the brake when the trailer 31 is connected to the tractor 30, nor can it automatically brake the trailer 31 when the trailer 31 is disengaged from the tractor 30, but needs to be manually activated by the driver. It is very inconvenient to operate the manual reversing valve 61
Method used
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Embodiment Construction
[0013] The present invention will be further described below in conjunction with the accompanying drawings and given embodiments.
[0014] Such as figure 1 and image 3 As shown, a brake device for a semi-trailer includes an air bag 60, a booster pump 62 and a trailer brake 63; the liquid outlet of the booster pump 62 communicates with the trailer brake 63; it also includes a solenoid valve 1, a power supply 2 , support 3, magnetic steel 4, proximity switch 5, first resistor 6, second resistor 7, triode 8 and relay 9; The relay 9 includes a coil 9-1 and a switch 9-2; the material of the magnetic steel 4 is magnetic steel. Proximity switch 5 selects the proximity switch whose model is LJ18A3-8-Z / BX for use. The afterburner pump 62 adopts the "XM60" afterburner pump produced by Wuhu Shengli Brake Co., Ltd. The air inlet P of the solenoid valve 1 communicates with the air bag 60 , the execution port A of the solenoid valve 1 communicates with the air inlet of the booster pum...
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A braking device of a semitrailer comprises an air pocket, a booster pump, a trailer brake, an electromagnetic valve, a power supply, a support, magnetic steel, a proximity switch, a first resistor, asecond resistor, a triode and a relay. The relay comprises a coil and a switch; an air inlet P of the electromagnetic valve is communicated with the air pocket, and an execution port A of the electromagnetic valve is communicated with an air inlet of the booster pump; the magnetic steel corresponds to the proximity switch; the proximity switch, the first resistor and the base electrode of the triode are electrically connected in sequence; one end of the second resistor is electrically connected between the first resistor and the base of the triode, the collector of the triode is electricallyconnected with one end of the coil of the relay, and the emitter of the triode is electrically connected with the cathode of the power supply; the other end of the coil of the relay is electrically connected with the positive electrode of the power supply; and a switch of the relay, a wiring end K of the electromagnetic valve and the power supply are electrically connected in sequence to form a loop. When the trailer is connected with the tractor, the trailer automatically relieves braking, and when the trailer is separated from the tractor, the trailer automatically brakes.
Description
technical field [0001] The invention relates to a semi-trailer, in particular to a braking device for a semi-trailer. Background technique [0002] Semi-trailer is a very widely used means of transportation in the modern transportation industry, such as figure 2 As shown, the semi-trailer is made up of a tractor 30 and a trailer 31. The front end of the semi-trailer has a drive capability and is called a tractor 30, and the rear end does not have a drive capability and is called a trailer 31. The tractor 30 and the trailer 31 are connected by a traction pin. When the semi-trailer is running, the trailer 31 is connected to the tractor 30, and at this moment, the trailer 31 needs to be in the brake release state. When the semi-trailer is not running, the trailer 31 is disengaged from the tractor 30, and at this moment, the trailer 31 needs to be in a braking state to be safer. The tractor 30 can separate from the original trailer 31 and tow other trailers, and the trailer 31...
Claims
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IPC IPC(8): B60T7/20
CPCB60T7/20
Inventor 常路玉
Owner 常路玉