Torsion spring driven scissor extension arm

Abstract

Provided is a torsional spring driven shear fork extending arm, wherein two terminal hexahedron unfolding elements are provided with several central hexahedron unfolding elements, and the terminal hexahedron unfolding elements together with the central hexahedron unfolding elements form a torsional spring driven shear fork extending arm. The folding and unfolding state of the torsional spring driven shear fork extending arm is in a shape of hexahedron frame, and every adjacent two central hexahedrons share one planar unfolding element, and are connected by four central disk chucks; meanwhile the terminal hexahedron unfolding elements also share one planar unfolding element with the adjacent central hexahedrons and are connected with the adjacent central hexahedrons through four central disk chucks. The torsional spring driven shear fork extending arm has the advantage of large folding proportion, high rigidity, good anti-seismic performance; and further has the advantages of simple structure, faster unfolding of overall mechanism, high reliability, which can respectively realize the corresponding functions of easy engineering manufacturing through movement, quick response, and application in the field of communication satellites, space stations and space probes.

Description

technical field [0001] The present invention relates to an extension arm. Background technique [0002] Folding mechanism refers to a type of mechanism that can expand from a folded state to a predetermined or desired structural form and can withstand a specific load. It is used in space missions such as space stations, communication satellite platforms, space telescopes, earth observation, and planetary exploration. , Various types of space folding mechanisms have been rapidly developed and applied, such as folding solar panels, space station basic skeletons, space manipulators, space extension arms, large-diameter folding antennas, large flexible solar panel support frames, etc. [0003] The space extension arm is the one-dimensional space folding mechanism with the most abundant forms, the earliest research and the most widely used among the space folding mechanisms. The main function of the space extension arm is to deploy flexible solar panels, support mesh antennas, s...

AI Technical Summary

Problems solved by technology

The frame-type extension arm is mainly composed of connecting rods and kinematic pairs. This type of mechanism has the advantages of large folding and folding ratio, high precision, good repeatable folding and expansion, and long life. At the same time, due to many hinge points, this type of mechanism also has The shortcomings of poor manufacturing process, complex control and slow response

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