Direct-drive traction motor rotating shaft sleeving device and method

Abstract

The invention relates to a direct-drive traction motor rotating shaft sleeving device and method. The direct-drive traction motor rotating shaft sleeving device comprises a supporting and positioningassembly used for supporting and positioning a rotor core so as to make the rotor core arranged along a vertical direction and a pressing assembly used for pressing a rotating shaft into the rotor core; the rotor core is positioned on the supporting and positioning assembly along the vertical direction; the rotating shaft is arranged into the rotor core, and one end of the rotating shaft extends into the supporting and positioning assembly; the pressing assembly is coaxially connected above the supporting and positioning assembly; and the rotating shaft is pressed downwards along the central axis of the rotating shaft. According to the direct-drive traction motor rotating shaft sleeving device and method of the invention, the supporting and positioning assembly and the pressing assembly are used in a matched manner, so that the rotor core can sleeve the rotating shaft, and external pressing equipment is not adopted during a whole sleeving process, and therefore, the sleeving device issafe, reliable, economical and practical; the inner diameter of the rotor core is increased through a heating mode, so that the axial displacement of the rotating shaft during the arrangement of the rotating shaft in the rotor core is increased, and therefore, the axial friction pressing displacement of the rotating shaft in the rotor core is smaller, damage to the rotating shaft in the sleeving process is reduced, and the rotating shaft can be reliably, safely, efficiently and nondestructively sleeved with the rotor core.

Description

technical field [0001] The invention relates to a direct-drive traction motor rotating shaft assembly device and method, which are used for the assembly of the rotating shaft and rotor core in the direct-drive traction motor. Background technique [0002] At present, the traction motor sleeve shaft device is equipped with a hydraulic press, and the method of using a hydraulic press to set the rotating shaft has the following disadvantages: 1. It is uneconomical, and it is necessary to purchase a special hydraulic press. The operating cost is high; 2. The scope of application is limited. Motors whose length exceeds the stroke will not be able to use a hydraulic press for shaft assembly. The new direct-drive permanent magnet traction motor adopts a coaxial structure with the shaft of the vehicle, and the length of the shaft reaches 2.2m. Conventional hydraulic machines cannot meet the needs of this type of motor shaft assembly. The cost of purchasing an unconventional hydrauli...

AI Technical Summary

Problems solved by technology

[0002] At present, the traction motor sleeve shaft device is equipped with a hydraulic press, and the method of using a hydraulic press to set the rotating shaft has the following disadvantages: 1. It is uneconomical, and it is necessary to purchase a special hydraulic press. The operating cost is high; 2. The scope of application is limited. Motors whose length exceeds the stroke will not be able to use hydraulic presses for shaft assembly

The new direct-drive permanent magnet traction motor adopts a coaxial structure with the shaft of the vehicle, and the length of the shaft reaches 2.2m. Conventional hydraulic machines cannot meet the needs of this type of motor shaft assembly. The cost of purchasing an unconventional hydraulic machine is high. For this small batch production of motors say no need at all

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