A method for reassembling stator punching plates in repair of large motors

Abstract

The invention relates to the field of motor repair, in particular to a stator punching piece again stacking method in repair process of a large-scale motor. Firstly, preparatory work before a stator core of the motor is dismantled includes the steps of measuring the length of each section of the stator core, the width of a ventilating groove and the axial length of the stator core and accurately recording. Secondly, weld protrusions of a stator core vertical rib are cleared away by an angle grinder. The stator punching piece again stacking method in the repair process of the large-scale motor is characterized in that a process locating annular plate is arranged on the stator core vertical rib before stacking, steel supports are arranged between a non-load side stator core pressing plate and a load side stator core pressing plate by 6 to 12 equants, and then a center point of the stator core is found and used as a alignment mark in again stacking. Compared with the prior art, the stator punching piece again stacking method in the repair process of the large-scale motor has the advantages of being capable of guaranteeing locating accuracy of the again stacking of a stator punching piece and position invariance after back stacking, solving the problem of unstable repair quality caused by position change of the stator punching piece and the stator core pressing plates in the repair process of the large-scale motor and improving the repair quality of the motor.

Description

technical field [0001] The invention relates to the field of motor repair, in particular to a method for reassembling stator punching sheets in the repair of large motors. Background technique [0002] In the repair of large motors, the stator punching is reassembled. Among them, the reassembly positioning of the stator punching after reassembly is particularly important for the repair quality of the motor. In the past, when the stator punching plate of a large motor was reassembled, the positioning method was only to rely on the cooperation between the vertical rib of the stator core and the non-load side core pressure plate to reassemble and locate. This method has poor reassembly accuracy and is easy to There is a deviation, because when the iron core is reassembled in this method, the vertical ribs are not positioned with process reinforcement, and small displacements are prone to occur, resulting in inaccurate positions of the iron core reinstallation; Rib holes, the p...

AI Technical Summary

Problems solved by technology

In the past, when the stator punching plate of a large motor was reassembled, the positioning method was only to rely on the cooperation between the vertical rib of the stator core and the non-load side core pressure plate to reassemble and locate. This method has poor reassembly accuracy and is easy to There is a deviation, because when the iron core is reassembled in this method, the vertical ribs are not positioned with process reinforcement, and small displacements are prone to occur, resulting in inaccurate positions of the iron core reinstallation; Rib holes, the pressure plate is positioned through these vertical rib holes and vertical ribs. In the primary design of the motor, the vertical rib holes on the pressure plate are generally larger than the size of the vertical ribs, so the positioning of the pressure plate when it is reassembled is also prone to deviation, which affects the motor. quality of restoration

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