Core-pulling method for large main drive motors
A main drive motor, large-scale technology, applied in the manufacture of motor generators, electromechanical devices, electrical components, etc., can solve the problems of high labor intensity and long working hours
Active Publication Date: 2020-07-28
CHINA MCC20 GRP CORP
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AI Technical Summary
Problems solved by technology
This method requires frequent replacement of the hoisting position of the rotor and the connection and disassembly of the extension shaft, which requires long working hours and high labor intensity
Method used
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Embodiment Construction
[0024] The present invention is further illustrated below by specific examples.
[0025] A core-pulling method for a large main drive motor, comprising
[0026] Step 1. Insert a rubber plate between the stator and the rotor to ensure that there is no direct contact between the rotor core and the stator core during hoisting;
[0027] like figure 1 As shown, in step 2, the stator 1 and rotor 2 are hoisted and moved as a whole by using the hoisting method of rotor 2 lifting stator 1;
[0028] Step 2.1. Before hoisting, draw the position of the wire rope hanging point on the rotor 2 according to the size of the hoisting drawing and use a rubber plate to protect the rotor shaft.
[0029] Step 2.2. Lift the rotor 2 to a height of 20mm and check the levelness of the rotor 2. If the levelness is not good, adjust the position of the wire rope according to the offset direction;
[0030] Step 2.3. When the level of rotor 2 is less than 5mm / M, lift the motor as a whole. When the liftin...
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The invention specifically relates to a core pulling method used for a large-scale main drive motor, and is characterized in that support frames are arranged at two ends of a rotor shaft after a motor is integrally lifted out, a steel wire rope is utilized to lift a stator, and a gap between a rotor and the stator is kept uniform; after the stator moves to the second support frame, a rotor arc support frame is utilized to support the rotor, and an adjusting base plate is arranged on the arc support frame; the second support frame is removed, and the stator is lifted to a standby support to be stored; and a lifting beam is utilized to lift the rotor, and the rotor is lifted to the standby support to be stored after the levelness of the rotor meets requirements. The construction method adopts the plurality of support frames to support the rotor and the stator of the motor in the lifting process, and is particularly suitable for using the arc support frame to perform secondary supporting on the bottom of the rotor, thereby completing drawing (penetrating) of the stator at a time, and by use of the method, work and time of connecting and dismounting an extending shaft are effectively saved.
Description
technical field [0001] The invention relates to the field of large-scale equipment installation, in particular to a core-pulling method for large-scale main drive motors. Background technique [0002] In the dismantling process of the large main drive motor, the method of pulling (threading) the core of the main motor is the most critical; in the past construction process, the method of extending the shaft is generally used to carry out the work of pulling (threading) the core of the rotor. This method needs to frequently change the hoisting position of the rotor and connect and disassemble the extension shaft, the working time is longer and the labor intensity is greater. Contents of the invention [0003] The object of the present invention is to provide a core-pulling method for a large-scale main drive motor that successfully pulls (pierces) the core at one time and reduces labor intensity. [0004] In order to achieve the above object, the present invention is achiev...
Claims
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IPC IPC(8): H02K15/00
CPCH02K15/0006
Inventor 宋赛中赵军陈雷祃丽婷
Owner CHINA MCC20 GRP CORP