Axial clearance adjusting method for magnetic suspension motor
A technology of axial clearance and adjustment method, applied in the manufacture of motor generators, bearings, shafts and bearings, etc., can solve the problems of assembly error, influence, increase the difficulty of measurement and adjustment operation, etc., and achieve the goal of improving adjustment accuracy and reducing operation difficulty. Effect
Active Publication Date: 2021-12-14
XINLEI COMPRESSOR CO LTD
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Problems solved by technology
[0004] The prior art has the following disadvantages: when adjusting the clearance of the thrust disc, it is necessary to use a sensor to measure the measuring body on the motor shaft, and then adjust the clearance of the thrust disc according to the measurement result; when adjusting the clearance of the protective bearing, it is necessary to measure the end face of the pressing block of the protective bearing and the end face of the protective bearing distance, and then adjust the protective bearing clearance according to the measurement results; in this method, the measurement and adjustment are carried out inside the magnetic levitation motor when the corresponding parts of the magnetic levitation motor are not assembled, which increases the operational difficulty of measurement and adjustment; and, when the magnetic levitation After the corresponding parts of the motor are assembled, there will be a certain assembly error, which will affect the gap adjusted before assembly, thereby reducing the accuracy of the axial gap adjustment of the magnetic levitation motor
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Embodiment 1
[0030] Such as Figure 1-4 Shown is a method for adjusting the axial clearance of a magnetic levitation motor. The magnetic levitation motor used in the method includes a motor casing 1, a motor shaft 2, a thrust plate 3, an axial spacer ring 4, an axial magnetic bearing 5, a protective bearing box 6, and a protective bearing box 6. The bearing 7 and the lock nut 8; the thrust plate 3 is fixedly arranged on the motor shaft 2, and the axial side surfaces of the axial spacer 4 respectively fit with the inner surfaces of the two axial magnetic bearings 5; the protective bearing 7 is arranged on the protective Inside the bearing box 6, an adjusting gasket is set between the bearing box 6 and the motor casing 1; the lock nut 8 is locked on the outermost end of the motor shaft 2, and between the lock nut 8 and the locking surface of the motor shaft 2 Adjusting shims are provided; the method includes the following steps:
[0031] (S1) Adjust the thrust disc clearance: record the axi...
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The invention relates to the field of magnetic suspension motors, and especially relates to an axial clearance adjusting method for a magnetic suspension motor . The method comprises the steps of adjusting a thrust disc gap, adjusting a lower side protection bearing gap and adjusting an upper side protection bearing gap; according to the method, after the magnetic suspension motor is assembled, a thrust disc gap and a protective bearing gap are subjected to metering measurement, and a measurement result obtained after corresponding parts of the motor are assembled is used as an adjustment basis; and the thrust disc clearance is ensured through the axial thickness of the axial space ring, and the bearing clearance is ensured and protected by changing the thickness of the adjusting gasket at different parts of the assembled motor, so the operation difficulty of measurement and adjustment is reduced, and the axial clearance adjustment precision of the magnetic suspension motor is improved.
Description
technical field [0001] The invention relates to the field of magnetic levitation motors, in particular to a method for adjusting the axial gap of the magnetic levitation motor. Background technique [0002] In the magnetic bearing rotor system, in addition to radial magnetic bearings and axial magnetic bearings, there are also protective bearings. The protective bearings have two functions. One is to protect the radial magnetic bearings and withstand the impact of the rotor when the rotor is dropped. The rotor collides with the radial magnetic bearing; secondly, it bears part of the axial thrust of the shaft system. When the rotor loses the support of the axial magnetic bearing, the motor shaft will also move in series in the axial direction, and the protective bearing can withstand a certain axial thrust. Prevents the thrust disc from colliding with the axial magnetic bearing and also protects the sensor. The main function of the protective bearing is to play a protective ...
Claims
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IPC IPC(8): H02K15/14H02K7/09H02K5/16F16C32/04
CPCH02K15/14H02K7/09H02K5/163F16C32/04
Inventor 袁军钟仁志徐功义项懂欣
Owner XINLEI COMPRESSOR CO LTD