| 摘要 |
1. Electromechanical actuator (4) for a disc brake for vehicles, in particular raiway vehicles, with a spring-loaded unit (15) supplying the clamping power, the actuating member (13, 36), of which is displaceably guided longitudinally, is movable in the direction of loading of the spring-loaded unit (15) and can be held in variable set positions by a nonself-locking cam gear (33, 35), which is adjustable via an electric motor (5), with a cycloidal or planetary gear (7) being positioned between the electric motor (5) and the cam gear (33, 35), characterized in that a brake (26), closing on an electrical signal, with mechanical servo assistance if necessary, is provided for firmly braking a rotatably mounted housing (23) of the cycloidal or planetary gear (7), so as to act as a coupling device between the electric motor (5) and the cam gear (33, 35), opening on emergency operation of the actuator (4) and interrupting the torque transmission between electric motor (5) and cam gear (33, 35). |
