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Shielded motor rotor shaft sleeve shrinkage fit process

A technology of shrink-fit technology and shielded motor, which is applied in the manufacture of stator/rotor body, etc., which can solve the problems of unfavorable influence and oxidation of the shaft sleeve and shaft section, and achieve the effect of convenient assembly method, high heating efficiency, and simple assembly process

Inactive Publication Date: 2021-04-02
HARBIN ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use heating furnace to oxidize the surface of the shaft sleeve, which will have an adverse effect on the fit between the shaft sleeve and the shaft section

Method used

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  • Shielded motor rotor shaft sleeve shrinkage fit process
  • Shielded motor rotor shaft sleeve shrinkage fit process
  • Shielded motor rotor shaft sleeve shrinkage fit process

Examples

Experimental program
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Embodiment Construction

[0014] Such as figure 1 As shown, a shielded motor rotor bushing shrink fit process, the rotor bushing 1 and the rotor shaft 4 adopt the interference fit of the tapered surface 3, the rotor bushing 1 is completely immersed in the water bath environment of the water tank 2, and the heating temperature of the water tank 2 is controlled at Within the range of 95°C±5°C, after sufficient heat preservation, take the rotor sleeve 1 out of the water tank 2 and quickly install it on the rotor shaft 4; after the assembly of the rotor sleeve 1 and the rotor shaft 4 is completed, use the lock nut 5 and The sheet 6 fixes the rotor sleeve 1 on the rotor shaft 4 .

[0015] The specific operation steps are as follows:

[0016] Such as figure 1 As shown, the rotor bushing 1 is placed upright in the water tank 2, the water level is submerged over the rotor bushing 1, the heating temperature of the water bath is set within the range of 95±5°C, after sufficient heat preservation, the water tank...

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Abstract

The invention relates to a shielded motor rotor shaft sleeve shrinkage fit process. A rotor shaft sleeve (1) and a rotor shaft (4) are in interference fit through a conical surface (3), the rotor shaft sleeve (1) is completely immersed in a water bath environment of a water tank (2), the heating temperature of the water tank (2) is controlled within the range of 95+ / -5 DEG C, and after sufficientheat preservation, the rotor shaft sleeve (1) is taken out of the water tank (2) and rapidly installed on the rotor shaft (4); and after the rotor shaft sleeve (1) and the rotor shaft (4) are assembled, the rotor shaft sleeve (1) is fixed on the rotor shaft (4) by adopting the locking nut (5) and the locking plate (6). The water tank water bath is adopted for heating the shaft sleeve, equipment issimple, cost is lower, higher heating efficiency can be achieved, and the beneficial effects of saving energy and reducing consumption are achieved; the assembling process of the rotor shaft sleeve is simpler, more convenient and faster without depending on a high-precision tool; the possibility that the rotor shaft sleeve and the shaft neck are not installed in place due to lapping-in in the installation process is avoided to a large extent, and stability, safety and reliability of shaft sleeve operation can be effectively guaranteed.

Description

technical field [0001] The present invention should relate to a shrink-fit process of a shaft sleeve of a shielded motor rotor. Background technique [0002] With the continuous application and development of nuclear power technology, canned motor pumps have been widely used. Water-lubricated guide bearing is the key component of this product, which directly determines the reliability of product operation. The guide bearing uses water as the cooling medium in the motor as the lubricating medium, and the friction pair is composed of the rotor sleeve and the guide bearing graphite material, so that the rotor can be safely and reliably run. Generally, the rotor sleeve and the shaft section adopt the form of small clearance fit or transition fit, which simplifies the processing and installation procedures, but due to the current requirements for the reliability and vibration and noise level of the shielded motor, this method is no longer suitable for the current stage. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02
CPCH02K15/02
Inventor 刁立民宋修奇索文旭于勇吕向平陈刚刘兆江李函霖杨磊
Owner HARBIN ELECTRIC POWER EQUIP
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