Magnetic-resistance type toothless elevator traction machine

Abstract

The invention discloses a magnetic-resistance type toothless elevator traction machine which comprises a spindle. A traction sheave is connected on the spindle, a detachable handwheel is arranged beside the traction sheave, an electro-magnetic drum brake is connected to the other end of a shaft where the detachable handwheel is located, the lower end of the electro-magnetic drum brake is fixedly connected on a bed, one end of the bed is connected with a front end cover which is connected with an aligning bearing and a rear bearing outer cover respectively, two sides of the front end cover are respectively connected with a front bearing outer cover and a front bearing inner cover, a winding stator core is arranged in the bed, a rotor core is arranged in the inner cavity of the winding stator core, the other end of the bed is connected with a rear end cover which is connected with a deep groove ball bearing and the rear bearing outer cover respectively, and a position sensor is arranged at the tail end of the spindle. By the arrangement, adverse influence brought to a switched reluctance motor by a doubly salient structure is effectively weakened or removed, vibration and noise of the switched reluctance motor are decreased, and stability of operation is improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of switched reluctance motors, in particular to a reluctance type toothless elevator traction machine. Background technique [0003] The driving motor of the elevator traction machine was originally a DC motor. Due to its reversing device, complex structure, reversing electric sparks, and inconvenient maintenance, it has been gradually eliminated in the 1980s. Then the traditional three-phase AC asynchronous single-speed, multi-speed and variable frequency motors are used, and a reducer is equipped to increase the driving torque. The structure of the traction machine is complicated, the transmission efficiency is low, the maintenance cost is high, and the reducer still has leakage. Oil also causes environmental pollution. For this reason, since the end of the 1990s, AC permanent magnet synchronous gearless elevator traction machines have been used at home and abroad to replace the elevator tractio...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the problems existing in the prior art, provide a reluctance toothless elevator traction machine, extend the application range of the servo type switched reluctance motor to the elevator traction machine, and become a reluctance toothless elevator The traction machine is suitable for the traction system of elevators such as passenger elevators, home villa elevators, and freight elevators, providing driving force for elevators; and because there is no permanent magnet, it solves the existing technical problems of permanent magnet synchronous motor elevator traction machines, such as permanent magnets Demagnetization and loss of magnetism at high temperature of the material, increased cost, unevenness of the magnetic steel causes uneven distribution of magnetic poles and affects operation, etc.

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