The invention relates to the technical field of braking, and provides a foot brake valve and an air pressure double-loop service braking system. The foot brake valve comprises a relay piston which divides a relay piston cavity into a first piston cavity and a second piston cavity; the pressure difference adjusting mechanism is arranged in the pressure difference adjusting cavity; wherein the second piston cavity is divided into a first sub-cavity and a second sub-cavity by a partition wall provided with a gas channel, and the pressure difference adjusting mechanism can seal the gas channel and can conduct the gas channel under the air pressure effect of the first sub-cavity; in the braking process, air enters the first piston cavity to push the relay piston to move, air enters the second sub-cavity to push the pressure difference adjusting mechanism to conduct the air channel, and air pressure in the second piston cavity pushes the relay piston to move till stress is balanced. The pressure difference value of the two piston cavities of the foot brake valve can be adjusted through the pressure difference adjusting mechanism, so that the air pressure output by the two piston cavities adapts to the actual working condition of a vehicle, and therefore the effectiveness and adaptability of service brake are improved.

    本发明涉及制动技术领域,提供脚制动阀和气压双回路行车制动系统。脚制动阀包括:继动活塞,将继动活塞腔分隔为第一活塞腔和第二活塞腔;压差调节机构,设置在压差调节腔中;其中,第二活塞腔被开设有气体通道的分隔壁分隔为子腔室一和子腔室二,压差调节机构能密封气体通道、并能在子腔室一的气压作用下导通气体通道;制动过程中,先第一活塞腔进气以推动继动活塞运动,后子腔室一进气以推动压差调节机构导通气体通道、且第二活塞腔中的气体压力推动继动活塞运动至受力平衡。本发明的脚制动阀的两个活塞腔的压差值能够通过压差调节机构进行调节,使两个活塞腔输出的气压与车辆的实际工况条件相适应,从而改善和提高行车制动的有效性和适配性。


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    Titel :

    Foot brake valve and air pressure double-loop service brake system


    Weitere Titelangaben:

    脚制动阀和气压双回路行车制动系统


    Beteiligte:
    LI ZHAOSONG (Autor:in) / QIU GUOGUANG (Autor:in)

    Erscheinungsdatum :

    2023-12-29


    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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