Shaft removing method for motor rotor core
A motor rotor and rotor core technology, which is applied in the field of motor core and shaft separation, can solve the problems of waste, long manufacturing cycle, unfavorable motor repair, etc., and achieve the effect of short manufacturing cycle, convenient maintenance, and large-scale repair
Active Publication Date: 2015-11-04
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
[0004] In order to solve the problems that the existing motor rotor core is directly scrapped after being damaged, there is serious waste, the manufacturing cycle is long and it is not conducive to motor repair, and the invention provides a method for withdrawing the motor rotor core
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[0010] A method for withdrawing the rotor core of a motor, the following steps are adopted: a. Place the rotor core 1 vertically with the non-transmission end of the rotation shaft 2 facing upwards, apply butter evenly on the lower end of the sleeve 3 and put it on the pressure ring 4 of the non-transmission end of the rotation shaft 2 ; b, pour a small amount of kerosene into the sleeve 3 and soak for more than 24 hours; c, place pressure plates 5 on the pressure rings 4 at both ends of the rotating shaft 2, and arrange a number of ventilation holes passing through the pressure rings 4 evenly between the two pressure plates 5 The fastening pull rod 6 of the hole, the fastening pull rod 6 is screwed with the fastening nut 7 located on the outside of the two pressure plates 5, and the butterfly washer 8 sleeved on the fastening pull rod 6 is arranged between the fastening nut 7 and the adjacent pressure plate 5 ; d. Hang the rotor core 1 on the platform of the hydraulic press, p...
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The invention specially relates to a shaft removing method formotor rotor core and solves problems that series waste, long manufacture period and inconvenience for motor repair due to direct discard of prior damaged motor rotor cores. The method includes steps of (a) placing the a rotor core vertically, uniformly spraying grease on the lower end of a sleeve and sleeving a press ring with the sleeve; (b) pouring a small amount of kerosene into the sleeve; (c) placing press boards on press rings on two ends of a rotary shaft, wherein fastening pull rods are distributed between the two press boards and are provided with fastening nuts and butterfly-shaped gaskets are arranged between the fastening nuts and the adjacent press boards; (d) pressuring the rotor core to 20T and screwing the fastening nuts; (e) removing support blocks and pressuring with an upper pressure limit of 60T by using an oil press to make the rotary shaft withdraw and adding a round iron rod on the head of the rotary shaft to facilitate rotary shaft removal when the head of the rotary shaft moves to a position below the fastening pull rods. According to the invention, shaft removal of the rotor iron core is facilitated and a requirement for mass maintenance of rotor cores is met.
Description
technical field [0001] The invention relates to a method for separating a motor core from a shaft, in particular to a method for withdrawing a motor rotor core from a shaft. Background technique [0002] With the successful introduction of foreign advanced motor manufacturing technology, high-speed trains have become popular. The maintenance and repair work of the rotor core is becoming more and more normalized, and one of the main tasks is to separate the core from the shaft. How to return shafts with quality and quantity and effectively reduce the scrap rate has become a common concern of industry scientific and technological workers. The motor CRH2 / 3 / 5 of the bullet train, the locomotive motor HXD2 / 3, and the rotor core shaft of HXN3 were seriously damaged. [0003] In the domestic and foreign motor industry, the rotor core of this type of motor mostly adopts the method of directly scrapping the entire motor rotor product, which causes great waste of core punching, pres...
Claims
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Inventor 韩振善时兴华王艳斌王艳芳
Owner CRRC YONGJI ELECTRIC CO LTD