A Pin Locking and Radial Backlash Elimination Device

Abstract

The invention relates to a pin locking and radial clearance eliminating device, and belongs to the technical field of space mechanism unfolding, connecting locking and releasing. The invention aims tosolve the problem of the influence of the reliability and the stability of a radial gap folding and unfolding mechanism between a base body part and a pin after an existing pin is locked. The pin locking and radial clearance eliminating device comprises an unfolding part, a pin body, an anti-backlash block, an anti-backlash shaft, a compression spring and the base body part, wherein a pin hole isformed in the base body part, the pin body sleeves the outer side of the anti-backlash shaft and is arranged in the pin hole, the compression spring is arranged between the inner end surface of the pin hole and the end surface of the anti-backlash shaft, the compression spring is in a compression state, a conical hole is formed in the unfolding part, and the base body part is arranged in cooperation with the conical hole through the pin body. The locking radial clearance eliminating device is simple in structure and high in reliability, the gap between the pin and the pin hole of the base body part can be effectively eliminated while the pin is completely matched with the conical hole of an expandable part, and high-frequency vibration between the expandable part and the base body part isavoided.

Description

technical field [0001] The invention relates to a pin locking and radial clearance eliminating device, which belongs to the technical field of space mechanism deployment, connection locking and release. Background technique [0002] The folding / deploying mechanism of the space expandable part is widely used in various space folding mechanisms due to its advantages of simple structure, small space occupation, convenient storage and transportation. With the development of aerospace technology, in order to ensure the reliability of the space folding mechanism, it is necessary for the expandable part to reach the unfolded position smoothly and lock smoothly during the unfolding process. Pin locking is one of the most commonly used methods in the field of deployable part locking. one. When the expandable part is unfolded in place, pin locking can effectively fix its pose, but there is often a small radial gap between the base part and the pin, which will seriously affect the sti...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a pin locking and radial clearance eliminating device in order to solve the problem of the influence of the radial gap between the base member and the pin on the reliability and stability of the folding mechanism after the existing pin is locked.

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