Experiment platform for testing dropping resistant performance of magnetic suspension bearing

Abstract

The invention discloses an experiment platform for testing the dropping resistant performance of a magnetic suspension bearing, which comprises a shell, a radial bearing stator, an axial bearing stator, a motor stator, two protection bearings, a magnetic suspension shaft system and two contact force measuring platforms, and is characterized in that the radial bearing stator, the axial bearing stator and the motor stator are all installed in the shell, and the two protection bearings are installed outside the shell and located at the left and right ends of the shell respectively; the magnetic suspension shaft system is arranged in the shell, and the left and right ends of the magnetic suspension shaft system stretches out of the shell; and the two contact force measuring platform are arranged outside the shell and located at the left and right ends of the shell respectively, the protection bearings are installed on the contact force measuring platforms respectively, and each contact force measuring platform comprises four piezoelectric sensors. The experiment platform for testing the dropping resistant performance of the magnetic suspension bearing is suitable for evaluating the reliability and the service life of the protection bearings and studying the dropping resistant performance of the protection bearings, and is high in measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of magnetic suspension bearings, in particular to a test bench for testing the anti-drop performance of magnetic suspension bearings. Background technique [0002] Magnetic suspension bearings use electromagnetic force to make the shafting and bearings rotate in relative suspension. They have the advantages of no friction resistance, high running precision, adjustable stiffness and damping, etc., and are especially suitable for use in high-speed, low-loss, and low-noise applications. The protective bearing (for example, rolling bearing) is the auxiliary support structure of the magnetic suspension bearing, and one of its main functions is that when the magnetic suspension bearing fails (for example, the magnetic suspension shafting falls), the protective bearing can temporarily support the high-speed rotating shafting to make it re- Suspend or slow down safely. [0003] When the high-speed rotating magnetic...

AI Technical Summary

Problems solved by technology

The bench test is an important means to study the anti-drop performance of the magnetic suspension bearing, that is, the high-speed drop test of the magnetic suspension shafting is carried out by simulating the actual working conditions of the magnetic suspension bearing, but usually only the bench test is used to study the impact of different parameters on the shaft center The impact of trajectory and vibration does not involve the life evaluation of the protection bearing and the study of anti-drop performance

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