Dash and weld hoof drum brake

The utility model provides a dash and weld hoof drum brake, including two brake shoes, braking bottom plate, camshaft, return spring, its structure is: two brake shoe one end are respectively through back shaft and braking bottom plate swivelling joint, and the other end attached and act on two concave surfaces of camshaft respectively, the one end of the attached camshaft of brake shoe is provided with return spring, its characterized in that: return spring connects two spring by arched centibar to constitute, and the spring at two is provided with the couple, and the hook is in the fixed axle department of two brake shoes. The utility model relates to a dash and weld hoof drum brake sets return spring's centibar to arch, can dodge the camshaft head in the motion process, has avoided again that return spring interferes with on bridge wheel hub in the stopper working process, makes the structure of stopper more equitable compact, stops installation space when mating the internals for bridge factory.