A core-piercing method for an extreme short-axis hydraulic motor

A hydraulic motor and short shaft technology, which is used in the manufacture of motor generators, electromechanical devices, electrical components, etc., can solve the problems of lack of available positions for motor cores, narrow workshop space, and inability to meet core lifting requirements. , to achieve the effect of ensuring construction safety, reducing labor intensity, and simple and convenient work process

Active Publication Date: 2020-04-14
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, there are still many deficiencies in the existing technology for the core-pumping operation of the motor, which cannot meet the core-piercing hoisting requirements of the factory building, the workshop space is small, and the available position for the motor core-pumping (piercing) is lacking.

Method used

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  • A core-piercing method for an extreme short-axis hydraulic motor
  • A core-piercing method for an extreme short-axis hydraulic motor
  • A core-piercing method for an extreme short-axis hydraulic motor

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Experimental program
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Effect test

Embodiment 1

[0058] A preferred embodiment of the present invention the ultimate short-axis hydraulic motor core threading method, see Figure 1-Figure 6 , which basically includes the following steps:

[0059] (1) Short shaft installation preparation: insert a buffer isolation plate (not shown) in the inner hole 121 of the stator 12 of the motor 100, so that the buffer isolation plate is interposed between the stator 12 and the rotor 11, preventing the rotor 11 from The inner hole 121 of the stator 12 is in direct contact with the hole wall; the two hoisting ropes 90 are respectively sleeved on the two hoisting points of the rotating shaft 1111 of the rotor 11, one hoisting point A1 is close to the motor collector ring 111, and the other hoisting point A2 is close to the rotor. The coupling 112 side is defined as the coupling side lifting point; the rotor 11 and the stator 12 are integrally lifted to a core pulling site P by using a hydraulic gantry crane.

[0060] Specifically as figur...

Embodiment 2

[0078] Embodiment 2 is completely consistent with Embodiment 1 in the core pulling step. The only difference is that the short shaft installation preparation, short shaft installation, limit point selection, and overall lifting to the limit point in Embodiment 1 are changed to "limit point selection, overall lifting to the limit point, and short shaft installation" steps. This is because the selection of the limit point does not necessarily have to be carried out after the installation of the short shaft is completed. After the short shaft 40 of a certain specification and length is selected, it can be based on the actual situation of the core-pulling site. Just find the limit point M, and then directly hoist the motor 100 as a whole to the position of the limit point M, then connect the short shaft 40 to the shaft coupling 112 of the rotating shaft, and then perform the operation of the core pulling step. It is understandable that such a scheme is also feasible. This soluti...

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Abstract

A limit short shaft hydraulic motor core pulling method comprises the following steps of preparing to install a short shaft, namely after a buffer isolating plate is plugged between a motor stator anda rotor, hoisting the entirety to a core pulling place; then connecting a short shaft with one end of a shaft coupling; selecting a limit point at the core pulling place, wherein the limit point is the reference of the placement position of the stator, enabling the short shaft of the rotor to get close to a wall but not to press against the wall, and the distance between the limit point and another one wall to be greater than the sum of the length of the stator, the length of the rotor and the length of the short shaft; overall hoisting to move a motor to the position of the limit point; adopting a three-level core pulling method, using a hydraulic gantry crane to hoist, and moving towards a direction reverse with the limit point, wherein one hoisting rope successively takes a position close to the rotor shaft coupling as a hoisting point, a point on the short shaft as the hoisting point and the position close to the magnetic pole of the rotor as the hoisting point to translate the rotor in an endless relay manner, so that the rotor and the short shaft are communicated and are moved out of the stator together, namely, a core is pulled.

Description

technical field [0001] The invention belongs to the technical field of large-scale motor maintenance, and in particular relates to a core-piercing method for an extreme short-axis hydraulic motor. Background technique [0002] In the dismantling process of the large main drive motor, the method of extracting (threading) the core of the main motor is the most critical step, which is the most difficult, time-consuming and labor-intensive step. There are many methods for extracting (piercing) the core of the main motor of the rolling mill, but they are basically not applicable to the rough rolling motor of the hot rolling production line. The reason is that the rough rolling motor room is usually arranged in a place without a large crane, the space is narrow, and there are many unfavorable factors such as the lack of available sites for motor pumping (threading) cores. At present, for this type of motor, the usual construction method of core pumping (piercing) mostly adopts th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00H02K15/16
Inventor 宋赛中李少星陈民泰金辽东
Owner CHINA MCC20 GRP CORP
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