Photoelectric telescope dust cover based on special-shaped spring drive and memory alloy wire brake

Abstract

The photoelectric telescope dust cover based on special-shaped spring drive and memory alloy wire brake relates to the technical field of photoelectric instruments, and solves the problem that the gap between the separate petals is too large and the opening is in the closed state of the existing large-caliber telescope dust cover. Slow and unstable joint work, including coaxially installed upper cover, rotating disc, dust-proof blade and mounting seat; also includes special-shaped spring and SMA memory alloy braking / locking module; symmetrically arranged on the upper cover. The arc-shaped through hole is provided with a pin fixed to the rotating disc, and the pin is connected with a special-shaped spring; the lower surface of the rotating disc is provided with a radial slideway, and the sliding end of each set of dust-proof blades is provided with a sliding column. The fixed end is provided with a fixed column; the rotating column is embedded in the radial slideway of the rotating disk, and the fixed column is fixed in the mounting seat; the braking / locking module of memory alloy is symmetrically installed on the protrusion of the rotating disk, and the upper cover and Mount connection; finally the mount is welded to the telescope frame. The present invention is small in volume.

Description

technical field [0001] The invention relates to the technical field of optoelectronic instruments, in particular to a dustproof cover for optoelectronic telescopes driven by special-shaped springs and braked by memory alloy wires. Background technique [0002] At present, the apertures of the existing lens dust caps on the market are very small, and they are all manual, which cannot be applied to the use requirements of ground-based large-aperture photoelectric telescopes. The hoods of the main mirrors of the ground-based photoelectric telescopes currently used by various domestic astronomical observatories or observation stations are all specially customized. However, these main mirror hoods have the following shortcomings: [0003] 1) Most of the manual products, or manual removal of the large-size lens cap on the photoelectric telescope, is cumbersome, and it is very easy to cause scratches or damage to the high-cost and high-quality primary mirror during the operation. ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems that the existing large-diameter telescope dust cover has too large gaps between the split petals when the split petals are in the closed state, resulting in poor dustproof effect, slow and unstable opening and closing, and the like, the present invention provides a special-shaped Photoelectric Telescope Dust Cover Driven by Spring and Braked by Memory Alloy Wire

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