Locking mechanism with repeatable and emergent compulsive unlocking function
A locking mechanism and forced unlocking technology, applied in the direction of aerospace vehicle guides, etc., can solve the problems of difficult unlocking and unreliable locking, and achieve the effects of avoiding difficult unlocking, simple structure, and easy control
Inactive Publication Date: 2010-03-17
BEIHANG UNIV
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AI Technical Summary
Problems solved by technology
The defect of the electromagnetic locking device is: when the locking force between the locking surface and the locked rotor or the compressive stress due to structural deformation is greater than the restoring force of the unlocking spring, it is difficult to unlock
In order to unlock smoothly, the locking force between the locking surface and the locked rotor or the compressive stress due to structural deformation must be smaller than the restoring force of the unlocking spring when locking, so the locking is not very reliable
Method used
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Embodiment Construction
[0030] Such as figure 1 As shown, the present invention is composed of a locking driver 1, a lock cylinder 2, a bracket 3, a micro switch 4, and a forced unlocking driver 5. The forced unlocking driver 5 and the locking driver 1 are installed on one side of the bracket 3 in a symmetrical distribution. The lock column 2 is installed on the other side of the bracket 3 through the rotating shaft 7, one end of the lock column 2 is the locking working surface, and the other end is the transmission working surface; the micro switch 4 is connected with the bracket 3 through the fastening screw 6, and the micro switch 4 The contact point is in the outer middle part of the lock cylinder 2, which can ensure that the lock cylinder 2 is in contact with it in the locked state, and the locked state of the lock cylinder can be judged by the clutch of the lock cylinder and the contact of the micro switch.
[0031] Such as figure 2 As shown, the locking driver 1 is composed of a locking mag...
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A locking mechanism with repeatable and emergent compulsive unlocking function can be used as a protecting device or a magnetic suspension flywheel or a magnetic suspension control moment gyrorotor. The locking mechanism mainly comprises a locking drive, a locking column, a bracket, a microswitch and a compulsive drive. Both the locking drive and the compulsive drive comprise a magnet seat, a permanent magnet, an electrical pure iron ring, a suction cup, a coil and a movable column. Both ends of the locking column are respectively a locking working surface and a driving working surface, and the rotor is locked or unlocked by converting the up and down movement of the movable column to the rotation of the locking column around a rotating shaft. The locking state of the rotor is judged by separating and jointing between the contact point of the microswitch and the locking column. When the locking drive is ineffective, the compulsive drive drives the movable column of the locking drive tomove and realize emergent unlocking. The locking device protects the magnetic suspension flywheel or a magnetic suspension control moment gyro system, and has the advantages of reusability, high reliability, simple structure and the like.
Description
technical field [0001] The invention relates to a magnetic levitation flywheel or a magnetic levitation control torque gyro locking device, which is a reusable magnetic levitation flywheel or a magnetic levitation control torque gyro with good reliability, low power consumption, simple structure, anti-locking and emergency forced unlocking functions The gyro locking device can be used as a protection device for a maglev flywheel or a maglev control moment gyro. Background technique [0002] The magnetic levitation flywheel or the magnetic levitation control torque gyro is a long-life, high-precision spacecraft attitude control actuator. Since the magnetic levitation flywheel or the magnetic levitation control torque gyro adopts magnetic bearing technology, there is a gap between the stator and the rotor, which will cause severe damage during the launch of the spacecraft. Vibration and shock, if no protective measures are taken, the magnetic levitation flywheel or the magneti...
Claims
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IPC IPC(8): B64G1/24
Inventor 汤继强房建成刘刚孙津济王曦李丽君
Owner BEIHANG UNIV