Elevator traction machine

Abstract

The invention discloses an elevator traction machine which comprises an electromotor, a fixing machine base, a fixed mainshaft, a rotor case, a rope sheave, a bearing and a supporting machine base, wherein the rope sheave is used for driving an elevator rope; a stator mounting part is arranged at a cylinder part, axially extending, of the fixing machine base, and a rotor mounting part is arranged at a cylinder part, axially extending, of the rotor case; the rotor mounting part and the stator mounting part are opposite to each other; the rope sheave is fixedly connected with the rotor case, and the fixed mainshaft is used for supporting the rotation of the rotor case through the bearing; the supporting machine base and the fixing machine base are used for supporting the fixed mainshaft together, and an encoder is arranged between the rotor case and the supporting machine base. The elevator traction machine with the cylinder type electromotor is in a new double-supporting structure for the shaft, the structure and the bearing way of the traction machine are beneficial to improving the loading capacity of the traction machine, and the whole structure of the traction machine is simpler.

Description

technical field [0001] The invention relates to an elevator driving device, in particular to an elevator traction machine. Background technique [0002] An elevator with a large load capacity and a large lifting height also has a large load on the traction machine, which requires the traction machine to have a large load-carrying capacity. If the traction machine adopts a shaft cantilever support structure, sometimes the strength cannot be guaranteed. In order to ensure the strength, in the case of large load and large lifting height, the elevator traction machine adopts the double support structure of the shaft. [0003] Chinese invention patent ZL200480002089.X discloses a traction machine for elevators, which is a traditional traction machine for elevators with a double-supported shaft structure. The structural features of the traction machine are: using a cylindrical motor; adopting a complete machine structure with two ends supporting the middle load; the base is provi...

AI Technical Summary

Problems solved by technology

[0005] First, the shape and structure of the sheave is complicated

The sheave needs to be equipped with a sheave shaft protruding to one side, and a bearing installation part needs to be provided on the sheave shaft; the sheave needs to be provided with a fixed installation part connected with the main body of the rotating part; these all make the shape and structure of the sheave more complicated, and the rope The volume weight of the wheel increases, and the production cost increases

[0006] Second, the structure of the traction machine is complex

Images