Method and arrangement for adjusting disc brake in squirrel cage motor

摘要

A method and an arrangement for adjusting the disc brake of a squirrel cage motor, the squirrel cage motor having a stator, a rotor arranged on a shaft of the motor and having a deflector for deflecting part of the magnetic field of the stator to a stray flux of the magnetic field of the rotor in the direction of the shaft, the motor further having an armature arranged on the shaft, a flexible element arranged between the deflector and the armature for pushing the armature away from the deflector, at least one brake disc supported to a motor frame via at least one slot, at least one trigger gear arranged on the shaft and a shaft bearing. When the motor is turned off, an air gap forms between the deflector and the armature, the size of which is adjusted with at least one adjusting piece movable inside a bearing surface in an inner ring of the bearing in the longitudinal direction of the shaft, so that the movement of the adjusting piece causes a movement of the armature in the longitudinal direction of the shaft so that the size of the air gap changes.