High-speed heavy-load elevator traction machine for dual-brake-disc brake structure

Abstract

The invention relates to a heavy-load / high-speed elevator traction machine adopting a dual-brake-disc brake structure. The heavy-load / high-speed elevator traction machine comprises a base, a tractionwheel, a power drive part and a brake part, wherein the power drive part is fixedly connected to the base for driving the traction wheel to perform peripheral rotation motion around the center axis ofthe traction wheel; the brake part comprises a first brake sub part and a second brake sub part; the first brake sub part and the second brake sub part are fixedly connected to the base, and are arranged side by side in the horizontal direction; and the first brake sub part and the second brake sub part co-act on the traction wheel. While the traction wheel needs to brake, needed brake force is shared by the two brake parts, so that requirements, on brake ability of single brake part are reduced, and therefore, a small-sized design of the elevator traction machine is possible, and follow-up packaging, transporting and mounting are facilitated. Besides, an impact force peak value, borne at a brake moment, of a bearing which is adaptive to the traction wheel is further reduced, so that theservice life is prolonged.

Description

technical field [0001] The invention relates to the technical field of elevator manufacturing, in particular to a high-speed and heavy-duty elevator traction machine with a double-brake disc braking structure. Background technique [0002] The traction machine is the heart of the elevator. In the actual working process, the traction machine is used to drag the steel wire rope, and the steel wire rope is connected to the elevator car to drive the elevator car to move up and down reciprocatingly. [0003] The elevator traction machine is mainly composed of a base, a traction wheel, a power driving part and a braking part. The brake part includes a friction disc and a brake. The traction sheave is horizontally placed directly above the base, and under the action of the power drive part, it performs circumferential rotation around its own central axis. The friction disc is fixedly connected with the traction sheave. The brake is used in conjunction with the friction disc and...

AI Technical Summary

Problems solved by technology

Although the above-mentioned technical solution solves the above-mentioned problems well, it also has the following disadvantages, which are as follows: 1. The increase of the outer diameter of the friction disc will inevitably lead to an increase in the overall height of the elevator traction machine, which is not conducive to elevator traction. The packaging of the traction machine and the implementation of transportation operations, and to a certain extent increase the inconvenience of workshop assembly of the elevator traction machine; 2. In the initial stage of braking, the bearing near the friction disc needs to carry a large force, so Sharply deteriorates its stress state, which in turn leads to a reduction in its service life

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