Brake drum

The invention discloses a brake drum. The brake drum comprises a cylindrical brake drum body, a drum brake disc coaxially arranged in the brake drum body and two brake shoe blocks symmetrically arranged on the upper surface of the drum brake disc. Reset springs are connected between the two brake shoe blocks, and an end-B adjustable conical positioning shaft and an end-A eccentric wheel are clamped at the butt-joint parts respectively when the two brake shoe blocks are oppositely buckled. According to the brake drum, higher braking efficacy can be achieved by adjusting the distance between theend-B adjustable conical positioning shaft and the drum brake disc, higher stability and quicker response are achieved, braking is more timely and safer, and the brake drum is more durable and capable of saving more energy. 本发明公开了一种刹车鼓，包括圆筒形的制动鼓、同轴设置在制动鼓内的鼓刹盘、对称设置在鼓刹盘上面的两个刹车蹄块，所述两个刹车蹄块之间连接有复位弹簧，所述两个刹车蹄块对扣时的对接处分别夹持有一个B端可调锥度定位轴和一个A端扁心轮。本发明的刹车鼓，通过调节B端可调锥度定位轴与鼓刹盘之间的距离，可以达到更高的制动效力，更加稳定和快速响应，让刹车制动更及时、更安全，更耐用，更节能。