The present disclosure relates to a brake actuator unit for an electromechanical brake and to an electromechanical brake. The brake actuator unit comprises a spindle, a spindle nut, and a spindle bearing, which receives the spindle, has a spherical bearing contact surface and absorbs the axial reaction forces of the spindle when the brake is actuated.

The present disclosure relates to a brake actuator unit for an electromechanical brake and to an electromechanical brake. The brake actuator unit comprises a spindle, a spindle nut, and a spindle bearing, which receives the spindle, has a spherical bearing contact surface and absorbs the axial reaction forces of the spindle when the brake is actuated.

An electromechanical brake comprising mobile induced elements or sectors or frames (2), the number of mobile induced elements (2) or sectors being at least three, where one of the sectors acts faster than the rest, and where one of the sectors acts in a delayed manner with respect to the rest of the sectors in the case of an emergency, said time-delayed actuation being achieved by means of the antiparallel arrangement of a diode (6) on the coil (5) associated with said sector. Smooth and progressive stop is thus achieved in the case of an emergency.

An electromagnetic brake (10) including a plurality of elastic members (25) which are arranged between an engagement surface of a brake pad (13) and an engagement surface of a hub (12) symmetrically about a center of rotation of the shaft (11). The biasing directions of the plurality of elastic members are in a rotational direction of the shaft.

An electromagnetic brake (10) including a plurality of elastic members (25) which are arranged between an engagement surface of a brake pad (13) and an engagement surface of a hub (12) symmetrically about a center of rotation of the shaft (11). The biasing directions of the plurality of elastic members are in a rotational direction of the shaft.

An actuator module is provided. The actuator module includes a motor part including a drive shaft and a drive part configured to rotate the drive shaft, a reducer installed on one side of the drive part and configured to increase an output torque according to driving of the motor part, a brake installed on an opposite side of the drive part and configured to suppress rotation of the motor part, an encoder installed on one side of the brake and configured to sense an operation of the drive shaft, a controller installed on one side of the encoder and electrically connected to the motor part to control the motor part, and a first housing configured to surround the motor part, the reducer, the brake, the encoder and the controller. An airflow path through which an airflow can flow is formed to extend from the motor part.

An actuator module is provided. The actuator module includes a motor part including a drive shaft and a drive part configured to rotate the drive shaft, a reducer installed on one side of the drive part and configured to increase an output torque according to driving of the motor part, a brake installed on an opposite side of the drive part and configured to suppress rotation of the motor part, an encoder installed on one side of the brake and configured to sense an operation of the drive shaft, a controller installed on one side of the encoder and electrically connected to the motor part to control the motor part, and a first housing configured to surround the motor part, the reducer, the brake, the encoder and the controller. An airflow path through which an airflow can flow is formed to extend from the motor part.

A system includes a wind turbine having a fixed part and a rotational part and a brake having a brake disk mounted to the rotational part for rotation with the rotational part. At least one brake block is fixed relative to the fixed part and has a friction surface facing the brake disk. The brake block is shiftable between a first position with the friction surface spaced from the brake disk and a second position with the friction surface in contact with and pressed against the brake disk, and the friction surface and/or the brake disk are configured such that pressing the at least one brake block against the brake disk creates a micro-interference fit between the at least one brake block and the brake disk.

A system includes a wind turbine having a fixed part and a rotational part and a brake having a brake disk mounted to the rotational part for rotation with the rotational part. At least one brake block is fixed relative to the fixed part and has a friction surface facing the brake disk. The brake block is shiftable between a first position with the friction surface spaced from the brake disk and a second position with the friction surface in contact with and pressed against the brake disk, and the friction surface and/or the brake disk are configured such that pressing the at least one brake block against the brake disk creates a micro-interference fit between the at least one brake block and the brake disk.

The invention relates to a method for preventive function control in an electromagnetic spring pressure brake for a simpler and more accurate determination of the critical operating state. The spring pressure brake comprises at least one coil, and an armature disk, a coil carrier having compression springs distributed thereon, a control module, and a monitoring module having at least one semiconductor component, a current measuring device, and a voltage measuring device, wherein the method comprises the following steps: Initially, the spring pressure brake is controlled by the control module by means of a voltage. Next, the state variables current (I) and voltage (U) at the electromagnetic spring pressure brake are measured by the monitoring module. Subsequently, a determination variable (T; F) of the electromagnetic spring pressure brake is determined by the monitoring module. Said determination variable (T; F) is summed over a range (a), which extends from the starting point of the actuation to a point (W), at which the armature disk begins to move. At the point (W), a current value is detected, at which the movement of the armature disk begins. The determination variable (T; F) is additionally summed over a range (b), which extends from the point of actuation, when the current (I) again reaches the value detected above, up to the point, at which a constant current is reached. Subsequently, a ratio (X) is calculated from the sum of the determination variable over the range (a) to the sum of the determination variable over the ranges (a) and (b). Upon reaching or exceeding a predetermined value (Y) by the value of the ratio (X), a state signal relating to the spring pressure brake is output.