Repeatable locking device for magnetically levitated flywheel

Abstract

The invention discloses a repeatable inner locking device for a magnetically levitated flywheel; the device mainly comprises a flywheel system, a locking transmission mechanism and a locking maintaining mechanism; the flywheel system mainly comprises a flywheel rotor and a flywheel stator shaft; the locking transmission mechanism mainly comprises a motor, a gearbox, a left bearing compression ring, a left bearing, a right bearing and a lead screw; the locking maintaining mechanism mainly comprises a lock head, a lock sleeve, a micro switch, a fixed seat, a damping washer, a reset spring, a position adjusting stud, a locking gland and a buffer rubber pad; according to the repeatable inner locking device for the magnetically levitated flywheel, the repeatable inner locking device is arranged in the center of the flywheel rotor, and is fixedly arranged on the flywheel stator shaft through a fastening screw; and the inner locking device protects the magnetically levitated flywheel system, and has the advantages of reusability, high reliability, small size, light weight, simple structure and the like.

Description

technical field [0001] The invention relates to a repeatable internal locking device for a magnetic levitation flywheel, which has the advantages of reusability, high reliability, small size, light weight, simple structure, easy processing and assembly, etc., and can be used as a protection device for a magnetic levitation flywheel system. Background technique [0002] The magnetic levitation flywheel is a long-life, high-precision spacecraft attitude control actuator. The spacecraft will generate severe vibration and shock during launch. Since the magnetic levitation flywheel adopts magnetic bearing technology, there is a gap between the stator and the rotor. In order to prevent damage to the flywheel system, an additional locking device is required to protect it; in addition, when When the maglev flywheel enters the predetermined orbit, the flywheel rotor system needs to be released to facilitate its work. Since the maglev flywheel needs to pass a series of environmental ...

AI Technical Summary

Problems solved by technology

In addition, when the locking device malfunctions and cannot be unlocked, the flywheel cannot be forcibly unlocked through the forced unlocking mechanism, which greatly reduces its unlocking reliability

Patent No. 200910093150.0 The spring leaf-wire rope hugging locking device has the advantages of high locking / unlocking reliability, but it needs to install a circle of spring leaf and locking drive mechanism around the flywheel, which increases the diameter of the flywheel system. resulting in an increase in the weight of the entire flywheel

The lever locking device with the patent No. 201010117577.2 does not need to increase the diameter of the flywheel, and has the advantages of small size and light weight, but it needs the same size as the lock cylinder and the V-shaped groove of the flywheel. Since it is inside the flywheel, it cannot be guaranteed from the process , leading to the disadvantages of too small contact area and too large contact stress

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