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Truss type extension arm capable of being unfolded and folded

An extension arm and truss-type technology, which is applied in the mechanical field, can solve the problems of the normal operation of the extension arm, the increase of space junk, and the lack of recycling, etc., and achieve the effect of reducing quality and complexity, increasing deployment speed, and improving carrying capacity

Pending Publication Date: 2022-01-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, most of the structures adopted by the extension arms in the prior art are locked after unfolding, and the structures are mostly complicated and do not have the function of recovery. However, due to the increase of space debris, the normal operation of the extension arms on the satellite is brought great threat

Method used

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  • Truss type extension arm capable of being unfolded and folded
  • Truss type extension arm capable of being unfolded and folded
  • Truss type extension arm capable of being unfolded and folded

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0022] A retractable truss-type extension arm, which is a triangular prism-type truss structure extension arm, is composed of upper and lower end structures, several extension units hinged at the end and a driving device;

[0023] The upper and lower ends have the same structure, and both are composed of a triangular horizontal plate A11 and a short vertical rod 12 . Each side of the triangular horizontal plate A11 has two holes ( image 3 ), are hinged with a hole on the short vertical bar 12 respectively. The top end structure of the extension arm is mainly used for connecting the satellite antenna, etc., and the bottom end structure of the extension arm is mainly used for connecting the base of the extension arm.

[0024] Described extension unit is made up of two triangular horizontal plates B51, tria...

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Abstract

The invention provides a truss type extension arm capable of being unfolded and folded, and belongs to the field of machines. The truss type extension arm comprises an upper end structure, a lower end structure, a stretching unit and a driving device. The stretching arm is unfolded and folded through two pull ropes, and the two pull ropes are alternately wound on pulleys of vertical rods respectively. Motors pull the unfolding pull ropes, and the pull ropes pull the pulleys to reduce the distance between the pulleys, so that the unfolding of the stretching arm is realized. In the recovery process, the motors pull and recover the pull ropes, and the pull ropes pull the pulleys to reduce the distance between the pulleys, so that the extension arm is recovered. Compared with the prior art, the number of vertical rods of the stretching arm is increased, and the bearing capacity of the stretching arm is improved. The extension arm has a recovery function, so that the extension arm is more flexible and is prevented from being damaged by space junk.

Description

technical field [0001] The invention relates to a retractable truss type extension arm, which belongs to the field of machinery. Background technique [0002] The space extension arm is an important part of the satellite antenna system, and it is a one-dimensional unfolded structure. It is used as a large-scale deployment antenna in space, a supporting frame for solar sails and telescopes, a space manipulator, and a space platform. Whether the extension arm can be deployed in time and accurately directly affects the success of the entire satellite launch mission. Moreover, most of the structures adopted by the extension arms in the prior art are locked after unfolding, and the structures are mostly complicated and do not have the function of recovery. However, due to the increase of space debris, the normal operation of the extension arms on the satellite is brought a great threat. Contents of the invention [0003] In order to solve the above problems, the present inve...

Claims

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Application Information

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IPC IPC(8): B64G1/22B64G1/44B64G1/66H01Q1/08H01Q1/10H01Q1/28
CPCB64G1/222B64G1/44B64G1/66H01Q1/084H01Q1/10H01Q1/288Y02E10/50
Inventor 曹彬彬蔡志勤刘忠振
Owner DALIAN UNIV OF TECH
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