Axle-free load type gear-free traction machine

Abstract

No-axle loading-type gear-free traction machine belongs to elevator technology field. It includes machine base and the bearing frame installed on the machine base, traction motor and traction wheel, it is characterized by: the traction machine is equipped with one load-bearing main axle for carrying the elevator gross weight and two bearing frames, the traction wheel is installed between two bearing frames through the load-bearing main axle, the traction motor is suspended and installed on the axle head of the load-bearing main axle out the bearing frame, soft connection is installed between the bottom of the traction motor and the machine base. The soft connection consists of rubber cushion, pressure adjust screw and connecting base, the connecting base is connected on the machine base firmly, the rubber cushion is installed in the connecting base cavity, the top of the rubber cushion is jacketted and connected with pressure adjust screw, the installing hole on the traction motor bottom is jacketed on the pressure adjust screw. The invention has reasonable and simple structure, easy manufacture, low cost, stable and reliable use performance, noise-free, long use life, very good spread application value and market prospects.

Description

technical field [0001] The invention relates to the structure of a traction machine for driving an elevator, and belongs to the technical field of elevators. Background technique [0002] The traction machine is the core part of the elevator equipment. The performance and installation quality of the traction machine directly affect the performance of the elevator. Therefore, elevator users attach great importance to the installation of the traction machine. The gearless traction machine used in the existing elevators, whether it is AC asynchronous or permanent magnet synchronous, has a designed structure of cantilever type, bridge type or three-point type. The cantilever type traction machine is that the traction wheel of the traction machine is cantilevered on the traction motor shaft, so that 100% of the weight of the entire elevator equipment is suspended on the traction motor. Bridge-type or three-point traction machine, the traction wheel of the traction machine is bri...

AI Technical Summary

Problems solved by technology

[0003] The gap between the rotor and the stator of the permanent magnet synchronous motor is only 0.7mm. A thin permanent magnet motor has to bear the weight of several tons of elevators, and the pulling force of the steel wire rope under the car and the counterweight side cannot be ignored. The gap between the rotor and the stator will change, which will affect the operation of the elevator, cause the running quality of the traction machine to drop greatly, and some even reduce the power

The traction machine with problems at this time often has several times the difference in operating noise between heavy load and no load, and it will also cause the motor to heat up

The heavy-duty gearless traction machine even causes the vibration phenomenon when the elevator is running, and of course the life of the traction machine will also be reduced

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