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.

    一种半挂车的制动装置,包括气包、加力泵、挂车制动器、电磁阀、电源、支架、磁钢、接近开关、第一电阻、第二电阻、三极管和继电器;继电器包括线圈和开关;电磁阀的进气口P与气包连通,电磁阀的执行口A与加力泵的进气口连通;磁钢与接近开关相对应;接近开关、第一电阻和三极管的基极依次电连接;第二电阻的一端电连接在第一电阻和三极管的基极之间,三极管的集电极与继电器的线圈的一端电连接,三极管的发射极与电源的负极电连接;继电器的线圈的另一端与电源的正极电连接;继电器的开关、电磁阀的接线端K和电源依次电连接并形成回路。本发明可实现挂车与牵引车相连时挂车自动解除制动,挂车与牵引车脱开时挂车自动进行制动。


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    Titel :

    Braking device of semitrailer


    Weitere Titelangaben:

    半挂车的制动装置


    Beteiligte:
    CHANG LUYU (Autor:in)

    Erscheinungsdatum :

    2020-10-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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