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SMA-spring-driven flywheel repeatable locking mechanism

A spring-driven, repetitive locking technology, applied in the direction of aerospace aircraft, aircraft, motor vehicles, etc., can solve the problems of poor synchronization, SMA-spring locking release mechanism cannot be automatically reset, etc., achieve high synchronization, improve unlocking Reliability, the effect of releasing a large load

Active Publication Date: 2020-04-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention mainly solves the problem that the SMA-spring locking and releasing mechanism in the prior art cannot be automatically reset and has poor synchronization, and provides an SMA-spring drive that can be locked repeatedly, has high synchronization, anti-vibration, and strong impact load capacity. flywheel locking mechanism

Method used

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  • SMA-spring-driven flywheel repeatable locking mechanism
  • SMA-spring-driven flywheel repeatable locking mechanism
  • SMA-spring-driven flywheel repeatable locking mechanism

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] The present invention provides a SMA-spring-driven flywheel repeatable locking mechanism, the structure of which is as follows: figure 2 and image 3 As shown, it includes: left lock cylinder 101, left wedge 102, left connecting rod 103, right lock cylinder 201, right wedge 202, right connecting rod 203, housing pulley 4, limit block inner pulley 5, limit Block 6, keep unlocking spring 7, trigger and lock SMA wire 8, screw 1 9, keep unlocking spring end cover 10, keep unlocking spring end cover pulley 11, trigger and lock SMA wire insulating block 12, top tightening spring 13, screw 2 14. Tightening spring end cover 15, unlocking SMA wire 16, slider 17, large pulley inside slider 18, small pulley inside slider 19, slider shaft 20, housing 21, housing pulley 2 22, unlocking SMA wire Insulation block 23.

[0043] Wherein, the tensioning spring 1...

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Abstract

The invention provides an SMA-spring-driven flywheel repeatable locking mechanism. The SMA-spring-driven flywheel repeatable locking mechanism comprises two sets of SMA-spring driving assemblies, twosets of lock column-wedge block units, a connecting rod, a sliding block and the like. An unlocking SMA wire-jacking spring is used for driving the locking process and the unlocking process, a triggering and locking SMA wire-unlocking keeping spring is used for controlling the unlocking state, a jacking spring simultaneously drives the left and right sets of lock column-wedge block units through the sliding block, the sliding block is connected with a wedge block through a connecting rod, and the wedge block is matched with the bottom surface of the lock column; in the locking process, the sliding block moves forwards to drive the wedge block to move outwards, and the lock column is pushed to move upwards to make contact with the flywheel. During releasing, the unlocking SMA wire is powered on and contracted, the sliding block moves backwards to drive the wedge block to move inwards, and the lock column moves downwards to be separated from the flywheel. And when locking is conducted again, the triggering and locking SMA wire is powered on, so that the triggering and locking SMA wire contracts and pulls out of the limiting block, limiting on the sliding block is relieved, and the mechanism can be locked again. Repeated locking can be achieved, synchronism is high, and vibration resistance and impact resistance are high.

Description

technical field [0001] The invention relates to the technical field of a spacecraft connection-separation mechanism, in particular to an automatic resettable and reusable flywheel locking mechanism. Background technique [0002] Magnetic levitation flywheel is a new type of satellite attitude control device. Its friction force is very small during operation, and its advantages are very prominent compared with traditional flywheels. It is an important development direction in the field of aerospace attitude control in the future. In order to ensure that the rotor of the maglev flywheel can float relative to the stator and rotate freely, there is a certain gap between the flywheel rotor and the stator. Due to the existence of the gap, the stator and the rotor may collide and cause damage during the launch process. Therefore, it is necessary to develop a magnetic levitation flywheel locking mechanism that is locked during the launch process and unlocked under control after ente...

Claims

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Application Information

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IPC IPC(8): B64G1/28B64G1/10
CPCB64G1/285B64G1/10B64G1/245
Inventor 张小勇饶智祥闫晓军黄大伟漆明净刘志伟
Owner BEIHANG UNIV
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