Static characteristic test device for radial magnetic bearings

Abstract

A static characteristic test device for radial magnetic bearings mainly comprises a loading and measuring mechanism, a tested radial magnetic bearing, rotor limiting and measuring mechanisms and a stator fixing mechanism. The static characteristic test device is characterized in that the loading and measuring mechanism comprises a locking nut, a loading screw cap, a loading screw rod, a sleeve end cap, a deep grove ball bearing, a sleeve, a small nut, a shifting rod, a thrust plate, an ergometer, a U-shaped rotor pushing rod, a loading clamp and a loading base; the tested radial magnetic bearing comprises a rotor and a stator; each rotor limiting and measuring mechanism comprises displacement sensor probes, a rotor radial shifting rod, acetal resin sheets, an upper pressure block, a U-shaped base and a U-shaped base supporting seat; the stator fixing mechanism comprises an upper V-shaped block, a pressure rod, an adjusting nut, lower half V-shaped blocks, a guide rail seat, locking nuts, pressure strips, nuts, screw rods and a base. The static characteristic test device for the radial magnetic bearings has the advantages of wide measurement range, convenience in adjustment, simplicity in operation, precision of measurement results and the like.

Description

technical field [0001] The invention relates to the field of magnetic suspension bearings. The invented static test device for radial magnetic suspension bearings has simple structure, convenient adjustment and wide applicability. test. Background technique [0002] Magnetic suspension bearings use magnetic field force to suspend the rotor. There is no mechanical contact between the rotor and the stator. It has the advantages of no friction, high allowable speed, no lubrication system, low noise, and small vibration. It is a new type of electromechanical bearing with broad development prospects. All-in-one product. In the design or production process of radial magnetic bearings, it is necessary to check the relationship between the magnetic field force and the applied current to check whether the radial magnetic bearing meets the requirements. The current method is to complete the assembly of the entire radial magnetic bearing system and then pass the test. The characteris...

AI Technical Summary

Problems solved by technology

In the design or production process of radial magnetic bearings, it is necessary to check the relationship between the magnetic field force and the applied current to check whether the radial magnetic bearing meets the requirements. The current method is to complete the assembly of the entire radial magnetic bearing system and then pass the test. The characteristics of the overall system are used to verify whether the radial magnetic bearing meets the requirements. At this time, due to the coupling of radial magnetic bearings, power amplifiers, sensors, control systems and other factors, if there is a fault in a certain link, the test cannot continue. For the fault of radial magnetic bearings, since radial magnetic bearings generally have an interference fit with the shell, disassembly and assembly are very complicated, so a static test device is urgently needed in the development and production of radial magnetic bearings

The practical patent No. 201120324333.1 has a complex structure and many instruments, and the magnetic bearing needs to be installed and debugged before testing; the practical patent No. 200920282782.7 also requires a complete magnetic suspension bearing system to be debugged before testing; the patent application No. is 201410151754 The patented invention can simply complete the stiffness test of the radial magnetic suspension bearing, but it does not have a displacement detection element, and only relies on the mechanical structure to determine the displacement, resulting in a decrease in test accuracy. In addition, due to the lack of displacement detection elements, it is impossible to accurately adjust the center of the stator and rotor , so there is no test device with high precision and simple structure for testing the static characteristics of radial magnetic bearings

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