The invention discloses an overspeed detecting and braking system for a stair lifting chair. The overspeed detecting and braking system comprises a support; an output shaft; the overspeed detection mechanism comprises a cam, a hook sheet and a speed limiting hook claw; the periphery of the cam comprises a plurality of protruding parts, the periphery of the hook piece comprises inverted conical teeth with the number matched with that of the protruding parts, and the cam and the hook piece are fixedly arranged on the output shaft in a sleeving mode. One end of the speed-limiting hook claw comprises a roller, and the other end of the speed-limiting hook claw comprises a hook part; the brake mechanism comprises a speed limiting rotating piece, a brake rotating piece, a rotating handle connecting piece and a brake gear shaft; one end of the speed-limiting rotating piece is arranged on the periphery of the support in a sleeving mode, and the other end of the speed-limiting rotating piece is movably connected with the speed-limiting hook claw through a first movable shaft penetrating through the speed-limiting rotating piece and the speed-limiting hook claw. The rotating handle connecting piece is used for transmission connection of the speed limiting rotating piece and the brake rotating piece. By means of the structure, the efficient overspeed detecting and braking effects can be achieved through the overspeed detecting mechanism and the braking mechanism, and meanwhile the braking stroke is controllable.

    本发明公开了一种楼梯升降椅超速检知刹车系统,其中包括:支架;输出轴;超速检知机构,超速检知机构包括凸轮、勾片和限速勾爪;凸轮的外周包括多个凸起部,勾片的外周包括数量与凸起部相匹配的倒锥齿,且凸轮和勾片套设固定在输出轴上;限速勾爪的一端包括滚轮,限速勾爪的另一端包括勾部;刹车机构,刹车机构包括限速转动片、刹车转动片、转柄连接件和刹车齿轴;限速转动片的一端套设在支架的外围,限速转动片的另一端通过穿设限速转动片和限速勾爪的第一活动轴与限速勾爪活动连接;转柄连接件用于限速转动片和刹车转动片的传动连接。通过上述结构,可通过超速检知机构和刹车机构实现较高效的超速检知和刹车效果,同时刹车行程可控。


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    Title :

    Stair lifting chair overspeed detecting and braking system


    Additional title:

    一种楼梯升降椅超速检知刹车系统


    Contributors:

    Publication date :

    2024-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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