The invention provides a brake releasing mechanism of a drum brake, and belongs to the technical field of brakes, the brake releasing mechanism comprises a machine body provided with the drum brake, and the drum brake is provided with a movable pull rod; one end of the brake arm is rotatably connected with the machine body, an extrusion seat is arranged at the other end of the brake arm, a pulling part is arranged in the middle of the brake arm, the pulling part is connected with the pull rod, and a rotatable extrusion wheel is arranged on the extrusion seat; and the brake release rod can rotate relative to the drum brake, and the brake release rod is provided with an extrusion surface and a separation surface. The brake releasing device has the beneficial effects that the brake releasing rod can rotate until the extruding surface is close to the extruding seat and pushes the extruding wheel through the extruding surface, or can rotate until the separating surface is close to the extruding seat and is separated from the extruding wheel through the separating surface, so that the extruding surface can always roll along the extruding surface or the separating surface in the adjusting process of the brake releasing rod; and original sliding friction is replaced by rolling friction, so that jamming between the brake release rod and the extrusion seat is prevented.

    本发明提供了一种鼓式制动器的松闸机构,属于制动器技术领域,包括:机体,其设置有鼓式制动器,所述鼓式制动器具有可移动的拉杆;制动臂,其一端可转动地与所述机体连接,所述制动臂的另一端设置有挤压座,所述制动臂的中部设置有拉动部,所述拉动部与所述拉杆连接,所述挤压座设置有可转动的挤压轮;松闸杆,其可相对于所述鼓式制动器转动,所述松闸杆具有挤压面以及分离面。本发明的有益效果为:松闸杆可转动至挤压面靠近挤压座并通过挤压面推动挤压轮,或者可转动至分离面靠近挤压座并通过分离面与挤压轮分离,因此松闸杆调节过程中挤压面始终可沿挤压面或者分离面滚动,以滚动摩擦代替原来的滑动摩擦,防止松闸杆与挤压座之间发生卡阻。


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    Title :

    Brake release mechanism of drum brake


    Additional title:

    一种鼓式制动器的松闸机构


    Contributors:

    Publication date :

    2023-11-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B66D Haspeln , CAPSTANS



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