A method for withdrawing the rotor core of a motor
A technology for motor rotors and rotor cores, applied in the field of separation of motor cores and shafts, can solve problems such as unfavorable motor rework, long manufacturing cycle, waste, etc., and achieve the effects of satisfying large-scale rework, short production cycle, and convenient maintenance.
Active Publication Date: 2017-09-26
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 is specifically a method for withdrawing the rotor core of a motor, which solves the problems of serious waste, long manufacturing period and unfavorable repairing of the motor when the rotor core of the existing motor is directly scrapped after being damaged. a. Place the rotor core vertically, apply butter evenly on the lower end of the sleeve and put it on the pressure ring; b. Pour a small amount of kerosene into the sleeve to soak; Fastening rods are evenly distributed, and fastening nuts are screwed on the fastening rods, and butterfly washers are arranged between the fastening nuts and adjacent pressure plates; d. Pressurize the rotor core to 20T, and tighten the fastening nuts; e 1. Remove the support block, pressurize the hydraulic machine, and the required pressure does not exceed 60T, and press out the shaft. When the head of the shaft retreats to the position below the fastening rod, add a round iron rod to the head of the shaft to withdraw the shaft. The invention is convenient for the shaft withdrawal of the rotor core, and meets the requirement of mass repairing of the rotor core.
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...
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IPC IPC(8): H02K15/00
Inventor 韩振善时兴华王艳斌王艳芳
Owner CRRC YONGJI ELECTRIC CO LTD