Tractor for elevator

Abstract

The present invention discloses a tractor for an elevator. The tractor comprises a motor, a fixed machine base, a fixed main shaft, a rotor case, a rope wheel for driving ropes of the elevator, a bearing, a rotating body and an encoder, wherein a stator installation part is disposed at a hollow disc-type extension part of the fixed machine base, a rotor installation part is disposed at a hollow disc-type extension part of the rotor case and is opposed to the stator installation part, the diameter of a hollow part of the fixed main shaft is larger than that of a rotating shaft part of the rotating body, the rotating body rotates along with the rotor case, and the encoder is disposed at the rotating shaft part of the rotating body. A novel structure is provided for the elevator tractor using a disc-type electric motor, the tractor is fully utilized to fix space of the hollow part of a main shaft, arrangement and operation of the encoder become convenient, overall thinness of the tractor is maintained, and the tractor is suitable for elevators, with small machine rooms or without machine rooms, requiring thinness of the tractor.

Description

technical field [0001] The invention relates to an elevator driving device, in particular to an elevator traction machine. Background technique [0002] The overall dimensions and installation method of the elevator traction machine have a great influence on the required installation space. In order to save installation space, traction machines for thin elevators are being used more and more. [0003] A kind of elevator machinery disclosed in Chinese invention patent ZL94193214.1 is a traditional thin-shaped elevator traction machine. The structural features of the traction machine are: using a disc motor; using a flat machine structure; through the lugs protruding from the stator shell on the opposite sides of the stator shell along the direction of the guide rail, and the hollow center of the traction machine The connecting short shaft at the shaft installs and fixes the traction machine on the guide rail. This kind of traction machine is thinner, which is beneficial to...

AI Technical Summary

Problems solved by technology

[0005] First, when the elevator is installed, it is necessary to wind the ropes driving the elevator on the sheave, and the ropes of the installed and running elevators need to be replaced regularly. The position between the guide rails hinders the operation of the job

[0006] Second, in case of an emergency situation in the elevator, when it is necessary to use the manual cranking device and manpower to turn the rotating parts of the traction machine to rescue the passengers in the elevator, since the rotating parts of the traction machine are located between the stator shell and the The position between the guide rails hinders the operation of the barring

Because the rotating parts of this kind of traction machine are all located between the stator shell and the guide rail, and the traction machine is provided with a connecting short shaft at the hollow shaft in the middle, which hinders the mechanical connection between the encoder and the rotating parts of the traction machine. The arrangement and operation of the encoder is very inconvenient

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