The trolley closed type brake device comprises wheels, a wheel carrier and a brake assembly, and the brake assembly comprises a limiting cylinder, a supporting protection base, a spring, an abutting block, a rotating shaft, a cam and a brake pad; mounting holes penetrate through the wheel frame, limiting cylinders are arranged in the mounting holes, and through holes are formed in the bottoms of the limiting cylinders; the limiting cylinder is connected with a hollow supporting protection seat with two open ends through a thrust ball bearing and a deep groove ball bearing, and a sealing cover is arranged at the upper end of the supporting protection seat; the upper end of the spring is provided with an abutting block, the lower end of the abutting block is provided with a connecting rod, and the lower end of the connecting rod is connected with a brake pad. A rotating shaft penetrates through the side wall of the supporting protection seat; the part of the rotating shaft in the supporting protection seat is connected with the cam. According to the invention, the supporting protection seat, the sealing cover and the thrust ball bearing are adopted to seal the cam and the abutting block which can generate friction when the handcart is braked, so that the possibility of direct friction between metal and hazardous article dust is reduced.

    本发明涉及一种手推车封闭式刹车装置,包括:车轮、轮架和刹车组件,刹车组件包括限位筒、支撑防护座、弹簧、抵接块、转轴、凸轮和刹车片;贯穿轮架设安装孔,安装孔内设有限位筒,限位筒底部设通孔;限位筒通过推力球轴承连接和深沟球轴承连接中空两端开口的支撑防护座,支撑防护座上端设有密封盖;限位筒内设有弹簧,弹簧的上端设有抵接块,抵接块下端设有连杆,连杆下端连接刹车片;贯穿支撑防护座的侧壁转动连接转轴;转轴位于支撑防护座内的部分连接凸轮。本发明采用支撑防护座、密封盖和推力球轴承将手推车刹车时会产生摩擦的凸轮和抵接块密封起来,降低了会出现金属与危险品粉尘直接摩擦的可能。


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    Title :

    Closed brake device of trolley


    Additional title:

    一种手推车封闭式刹车装置


    Contributors:
    ZHANG YUXIAO (author) / WANG HUAN (author) / CHEN LU (author) / ZHOU JING (author) / XIE JING (author)

    Publication date :

    2023-06-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS



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