Elevator traction machine

Abstract

The invention discloses an elevator traction device, which includes a detachable load-bearing wall frame body that consists of a front support (2) and a rear support (10), a supporting shaft (1), a stator (5) fixedly arranged on the supporting shaft (1), an outer rotor cylinder (6) sheathed outside the stator (5), a permanent magnetic piece (7)and an encoder (11); a traction wheel (3) is separably connected with the end of the outer rotor cylinder (6) and is arranged on the support shaft (1) by a bearing, one end of the supporting shaft is fixed on the front support (2) and the other end supports on a rear end cover (9) by a bearing (14), a rotation shaft (17) is tightly fitted in a central hole that is on the rear end cover and is coaxial with the support shaft (1), and the other end of the rotation shaft (17) is arranged on the rear support (10) by a bearing (18) and is connected with the encoder (11). The invention is low in manufacturing cost and maintenance cost, safe in operation, and good in maintainability and a cage almost has no vibration.

Description

technical field [0001] The invention relates to an elevator matching device, in particular to an elevator traction machine. Background technique [0002] As elevators are used more and more widely, people's requirements for elevators are getting higher and higher. The elevator traction machine is one of the key devices that affect the operation of the elevator. [0003] The applicant's prior invention patent application published on the website of the State Intellectual Property Office of China, whose publication number is CN 1746096A, discloses a kind of elevator traction machine (see Figure 3): it is based on two opposite load-bearing wall panels as Front support 2 and rear support 10, the four corners of front support 2 and rear support 10 are equipped with detachable pull rods, fastened with nuts, thereby connecting to form the load-bearing structure of cube structure. Brake 8 is installed on the pull rod. A support shaft 1 is installed and fixed in the central axis h...

AI Technical Summary

Problems solved by technology

To sum up, from the perspective of mechanical structure, the wall thickness of the outer rotor cylinder of the elevator traction machine in the prior art is relatively large, which not only leads to the deterioration of the casting quality caused by the increase in the weight of the single casting, but also affects the operation of the equipment. Safety, and because the outer rotor cylinder has to use relatively high-priced wear-resistant materials as a whole, its manufacturing cost is also significantly increased

[0009] 2. When the outer rotor cylinder of the above prior art is used as a traction sheave, it is a vulnerable part. Once the traction groove of the outer rotor cylinder is worn to the allowable limit, the entire outer rotor cylinder must be replaced, even if The permanent magnetic block pasted on its inner surface has not been damaged, but it has to be scrapped together with the outer rotor cylinder, which not only increases unnecessary waste of materials, but also makes maintenance expensive; and because the permanent magnetic block pasted on the inner surface of the outer rotor cylinder has Strong magnetism makes it very difficult to separate the stator and the outer rotor cylinder. It is difficult to disassemble and install on site. It can only be returned to the manufacturer for replacement and repair. Therefore, it not only makes the maintenance cost more expensive, but also makes the maintainability poor and difficult to maintain.

What's more lacking is that sometimes when high-precision speed regulation is required, the structure is often difficult to meet the requirements of elevator stability, resulting in obvious vibration of the car

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