| 摘要 |
The invention relates to an asynchronous electric motor-brake, with short-circuited and double acting rotor used for takles and cranes, tyre vulcanizers, machine-tools and installations in the petrochemical industry which require high starting torques and the presence of a brake for ensuring the labour security conditions, rapid shut-down or keeping the mechanical components thereof in a certain position The asynchronous motor-brake is characterized in that it comprises a rotor assembly containing a cage (1) used for manufacturing normal asynchronous motors and a modified rotor cage (2) used for the fabrication of motor brakes, whose dowels and ribs are turned out from one of the cage (1) rings and from the ring on the unmodified stator core side of the cage (2) and are secured by pressing on an axle (3) so that the two turned out short-circuiting rings contact each other, said rotor assembly rotates in the bearings (4) which are mounted in a tensile shield (5) and a shield (6), fastened with screws (7) in two casing subassemblies with compressed stator core (8), used for manufacturing the normal asynchronous motors which are mechanically coupled by means of screws (9), which are introduced in recesses (a) milled inside the ribs of one of the casings and screwed in the holes that are provided in the other casing, the co-axiality of the two casing subassemblies being obtained by centring on the bevel of a spacer flange (10) whose width is given by the axial size of the two milled short-circuiting rings, mounting in which the notches of the two casing subassemblies with compressed stator core (8) to be aligned, which permits simultaneously winding with the same stator winding (11)
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