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A sma-spring actuated flywheel re-locking mechanism

A spring-driven, repetitive locking technology, applied in the direction of aerospace vehicles, aircraft, motor vehicles, etc., can solve problems such as poor synchronization, SMA-spring locking and releasing mechanism cannot be automatically reset, etc.

Active Publication Date: 2021-07-06
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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  • A sma-spring actuated flywheel re-locking mechanism
  • A sma-spring actuated flywheel re-locking mechanism
  • A sma-spring actuated flywheel re-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, which includes two sets of SMA-spring drive components, two sets of lock cylinder-wedge units, connecting rods, sliders and the like. Among them, the unlocking SMA wire-top tightening spring is used to drive the locking process and the unlocking process, and the triggering locking SMA wire-maintaining unlocking spring is used to control the unlocking state. The jacking spring simultaneously drives the left and right sets of lock cylinder-wedge units through the slider. The slider is connected to the wedge through the connecting rod, and the wedge matches the bottom surface of the lock cylinder. When locking, the slider moves forward to drive the wedge to move outward. , push the lock column to move up and contact with the flywheel. When releasing, the unlocking SMA wire is energized and contracted, the slider moves backward to drive the wedge to move inwardly, and the lock cylinder moves down to disengage from the flywheel. When locking again, energize the trigger locking SMA wire, make it shrink and pull out the limit block, release the limit on the slider, and the mechanism can be locked again. The invention can realize repeated locking, has high synchronism, and strong anti-vibration and impact capabilities.

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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Patent Type & Authority Patents(China)
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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