Friction dry type electricity loss electromagnetic braker

The utility model relates to a friction dry type electricity loss electromagnetic brake. A brake mechanism uses a central arrangement structure of a single compression spring, and the compression spring is arranged in a spring seat which is provided with a spherical external containing surface. Accordingly, braking force of the friction dry type electricity loss electromagnetic brake can lie in a plane of a shaft center wire of a driving shaft forever; transmission of braking torque uses a structural form that an internal and an external splines of a special rectangle are mutually engaged; the splines of the braking torque use a six equal structural form; the internal side of a brake friction plate is provided with a spline liner, and the external side is applied with a composite layer of semimetal friction materials. The friction dry type electricity loss electromagnetic brake has the advantages of convenient adjustment, short braking time, flexible motion, etc. Durability of the friction plate can reach to 10< 6 > times/plate; volume is large, and the braking torque is large.