Inner rotor permanent magnet synchronous traction machine

Abstract

An inner rotor permanent magnet synchronous traction machine solves the technical problems that an existing ultra-high-speed and large-load traction machine stator coil is poor in cooling effect and cannot meet the manual turning requirement of a large-torque traction machine. The traction machine is technically characterized in that a rotor main shaft is connected with a rotor iron core through a rotor connecting sleeve; ventilation holes formed in the stator coil serve as a first set of cooling and ventilating duct, and a second set of cooling and ventilating duct is formed between a first ventilation groove and a second ventilation groove formed in the outer surface of the stator coil and the inner surface of a machine case; the two ventilating ducts are communicated with a centrifugal fan on the machine case; a small gear shaft of a turning gear is connected with a handwheel through a planetary speed reducer and slides in a reciprocating mode under the driving of the handwheel, and therefore the small gear shaft can be meshed with a turning gear ring or separated from the turning gear ring. The traction machine is reasonable in structural design and easy to assemble and disassemble; a main shaft cannot be damaged easily, and large-torque manual turning can be achieved; use is safe and reliable, maintenance is convenient, and cooling efficiency is remarkably improved; running reliability and running stability of the traction machine are further improved, and service life is prolonged.

Description

technical field [0001] The invention relates to an ultra-high-speed and large-load traction machine for high-rise building elevators, in particular to an inner rotor permanent magnet synchronous traction machine. It belongs to the technical field of traction machines. Background technique [0002] With the development of the city, the population of the city is increasing, and high-rise buildings are constantly appearing. More and more buildings are equipped with ultra-high speed (rated speed not less than 7.0m / s), large load (rated load not less than 1600kg) Elevators for traction machines are installed in high-rise buildings. However, due to the high power of the existing ultra-high-speed and heavy-duty traction machines, the influence of the heat dissipation effect of the stator wire package on the reliability and stability of the operation has become an extremely prominent problem. [0003] According to the problems of the existing ultra-high-speed and large-load tracti...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an inner rotor permanent magnet synchronous traction machine, which solves the problem that the existing ultra-high-speed, large-load traction machine has a poor heat dissipation effect of the stator wire package and cannot meet the requirements of manual barring of a large-torque traction machine. Needs and other technical issues, its structural design is reasonable, easy to install and unload, does not damage the main shaft, can realize high-torque manual cranking, safe and reliable in use, convenient in maintenance, significantly improves heat dissipation efficiency, and further ensures the reliability and stability of its operation ,Extended service life

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