A high-precision rotating shaft fast locking device

Abstract

The invention relates to a high-precision fast locking device for a rotating shaft. The high-precision fast locking device comprises a fixed support, a rotating part which rotates along with the rotating shaft, an end cover, a locking pin, a spring, a handle sleeve and a handle. After the end cover is installed on the support, the end cover is in rotating fit with the rotating shaft, a limiting wheel is installed on the right side of the rotating part, a limiting bush is designed on the inner side of the end cover, and the rotating part can freely rotate between two limiting surfaces; the headof the locking pin is conical, and when the head of the locking pin enters a conical hole formed in the limiting wheel, locking of the rotating part can be realized; and the locking pin can be screwed into the handle after being squeezed by the spring, the handle sleeve is pressed into a D-shaped hole of the end cover to keep unchanged, and the handle can slide on the free curved surface of the tail part of the handle sleeve when the handle is rotated, so that the axial movement of the locking pin is realized. The locking device can achieve rapid locking of the rotating shaft in the axial direction, and is suitable for the field of rotating shaft mechanisms with narrow space and high-precision limiting.

Description

technical field [0001] The invention relates to a rotating shaft device, in particular to a rotating shaft fast locking device capable of high-precision positioning. Background technique [0002] The hoisting head-up display (HUD) is more and more widely used in military fighter jets, civil aviation airliners, transport aircraft and other aircraft. In order to save cockpit space and improve ergonomics, it is generally required that the combined mirror assembly of the HUD must have the retractable function. When the combined mirror assembly is retracted and unfolded around the rotating shaft, a high-precision device capable of quickly realizing the locking of the rotating shaft is required. [0003] For example, the Chinese patent application publication number CN 103010474B, titled Locking Structure of Rotating Arm and Bracket Assembly for Combined Mirror of Airborne Head-Up Display, discloses a locking structure of rotating arm. The locking structure adopts the crank slide...

AI Technical Summary

Problems solved by technology

The locking structure adopts the crank slider principle, and the locking mechanism is designed from the radial direction of the rotating shaft to realize the locking of the rotating arm. The locking effect is stable and reliable, but it takes up a large structural space. It is not applicable to the situation where the lock is implemented

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