Space large-angle precise switching and locking device

Abstract

The invention relates to a space large-angle precise switching and locking device. A hinge seat is fixed to a slope of an angular support, a turnover screw rod penetrates a screw rod rotating shaft seat in a center manner, and a sliding spiral mechanism is formed through the turnover screw rod and a threaded sleeve fixed to a connecting shaft sleeve; a hinge seat, an upper connecting rod A, an upper connecting rod B and a supporting frame form a hinge four-rod mechanism, and the hinge seat, a lower connecting rod A, a lower connecting rod B and the supporting frame form the other hinge four-rod mechanism; the two hinge four-rod mechanisms are parallel; the turnover screw rod spirally moves to drive the upper connecting rods and the lower connecting rods to move, and the connecting rods move to drive the supporting frame to do expanding or shrinking turnover motion, so that transformation of angle positions of the device is achieved. A positioning base face of an arc-shaped locking seat is mounted on the base face of the supporting frame, the positioning base face and the supporting face rotate jointly around the axis, a locking screw slides on the circular-arc line of the arc locking seat, and locking and unlocking are achieved. The spiral mechanism and the hinge four-rod mechanisms are integrated to achieve the space angle switching function, the structure is compact, the angle range is large, and the precision is high; and after the locking device moves to be in place, a triple-locking structure is achieved, and stability is good.

Description

technical field [0001] The invention belongs to the field of precision machinery, and in particular relates to a device for realizing large-angle, high-precision switching and locking based on the integration of sliding screw transmission and hinge four-bar transmission. Background technique [0002] At present, most space angle switching and locking devices realize the space angle switching function by combining multiple turntables and angle tables. There are problems such as complex structure, large space occupation, heavy weight, and mutual interference in each dimension angle adjustment. However, in a limited space, using the sliding screw drive as the main force, integrating the sliding screw mechanism and the hinged four-bar mechanism for large-angle (≥45°), high-precision (≤5″) switching and locking devices has not been reported. Contents of the invention [0003] In order to solve the problems of the prior art, the object of the present invention is to seek a devic...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the space angle switching and locking devices realize the space angle switching function by combining multiple turntables and angle tables. There are problems such as complex structure, large space occupation, heavy weight, and mutual interference in each dimension angle adjustment.

However, in a limited space, using the sliding screw drive as the main force, integrating the sliding screw mechanism and the hinged four-bar mechanism to switch and lock the device at a large angle (≥45°) and high precision (≤5″) has not been reported.

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