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Foldable supporting arm hinged to automatic drive unit and driven by folding lead screw

An automatic drive and lead screw drive technology, applied in the aerospace field, can solve problems such as difficult antennas, limited deployment range, and small folding ratio, achieving the effects of wide application range, improving folding ratio, and saving launch costs

Active Publication Date: 2019-05-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing folding support arm depends on the drive of the hinge spring and the lead screw, the folding ratio is small, the expansion range is limited, and it is difficult to provide stretching and supporting functions as a relatively large antenna, etc., and provides a Articulated automatic drive unit and folding support arm driven by folding screw

Method used

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  • Foldable supporting arm hinged to automatic drive unit and driven by folding lead screw
  • Foldable supporting arm hinged to automatic drive unit and driven by folding lead screw
  • Foldable supporting arm hinged to automatic drive unit and driven by folding lead screw

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specific Embodiment approach 1

[0031] Specific implementation mode one: combine figure 1 with figure 2 To illustrate this embodiment, an automatic hinge drive unit in this embodiment includes a motor 1, a first connecting body 2, a second connecting body 3, a lead screw 4, a nut 5, a guide rod 6 and a connecting rod 7;

[0032] The first connecting body 2 and the second connecting body 3 are hinged, and the first connecting body 2 is provided with a lead screw 4 and a guide rod 6, the axis of the lead screw 4 and the axis of the guide rod 6 are parallel to each other, and the lead screw 4 is driven by the motor 1 , the lead screw 4 is provided with a screw nut 5, the screw nut 5 is slidably arranged on the guide rod 6, one end of the connecting rod 7 is hinged with the screw nut 5, the other end of the connecting rod 7 is hinged with the second connecting body 3, and the connecting rod 7 The axis hinged with the second connecting body 3 and the axis hinged between the first connecting body 2 and the secon...

specific Embodiment approach 2

[0034] Specific implementation mode two: combination figure 1 with figure 2 To illustrate this embodiment, a manual drive device 8 is also provided between the lead screw 4 and the shaft of the motor 1 in this embodiment, and the manual drive device 8 includes a first bevel gear 8-1, a second bevel gear 8-2, a transmission shaft 8-3 and one-way rotation mechanism 8-4;

[0035] The transmission shaft 8-3 is fixed on the shaft of the motor 1, a one-way rotation mechanism 8-4 is arranged between the end of the transmission shaft 8-3 and the end of the lead screw 4, and the first bevel gear is fixed on the lead screw 4 8-1, the second bevel gear 8-2 is arranged on the first connecting body 2 through the rotating shaft, and the first bevel gear 8-1 and the second bevel gear 8-2 mesh with each other.

[0036] Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Specific implementation mode three: combination figure 2 To illustrate this embodiment, the one-way rotation mechanism 8-4 of this embodiment includes a first compression spring 8-4-1 and two ratchet toothed sleeves 8-4-2;

[0038] One of the ratchet toothed sleeves 8-4-2 is slidably arranged on the transmission shaft 8-3 and can rotate together with the transmission shaft 8-3, and the first compression spring 8-4-1 is sleeved on the transmission shaft 8-3 and the two The ends are respectively supported on the first connecting body 2 and the end of one of the ratchet toothed sleeves 8-4-2, and the other ratchet toothed sleeve 8-4-2 is fixed on the end of the lead screw 4, The ratchet teeth on the two ratchet toothed sleeves 8-4-2 cooperate with each other under the action of the first compression spring 8-4-1.

[0039] The drive shaft 8-3 can be a spline shaft, or a square shaft, etc., which can generate torque to one of the ratchet toothed sleeves 8-4-2, and can make...

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Abstract

The invention discloses a foldable supporting arm hinged to an automatic drive unit and driven by a folding lead screw and belongs to the technical field of spaceflight, and solves the problems that the conventional foldable supporting arm is unfolded by virtue of drive of a hinge spring and a lead screw, is small in folding ratio and difficultly provides extending and supporting functions while serving as a large antenna and the like. The foldable supporting arm disclosed by the invention comprises a motor, a first connecting body, a second connecting body, a lead screw, a nut, a guide rod and a connecting rod, wherein the first connecting body is hinged to the second connecting body; the lead screw and the guide rod are arranged on the first connecting body; the axis of the lead screw and the axis of the guide rod are parallel to each other; the lead screw is driven by the motor; the nut is arranged on the lead screw; the nut is arranged on the guide rod in a sliding manner; one endof the connecting rod is hinged to the nut; the other end of the connecting rod is hinged to the second connecting body; and the hinged axis of the connecting rod and the second connecting body and the hinged axis of the first connecting body and the second connecting body are parallel to each other. The foldable supporting arm disclosed by the invention is applicable to support of space antennas.

Description

technical field [0001] The invention specifically relates to a hinged automatic drive unit and a folding support arm driven by a folding screw, which belongs to the field of aerospace technology. Background technique [0002] With the development of aerospace technology and the further exploration and utilization of my country's aerospace industry, large-scale deployment antennas, deep space probes, rigid and flexible solar wings, and space stations have become the main objects of exploration and design by researchers in the aerospace field of our country. . Looking at the domestic development needs, the requirements for the deployment ratio, precision and stiffness of the spacecraft system are getting higher and higher, so it is necessary to design a high-performance folding support arm. As a basic one-dimensional deployment mechanism and support mechanism, the folding support arm can be used as a large-scale deployment antenna, solar wing, space manipulator and space stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/22B64G1/44
Inventor 郭宏伟马小飞邓宗全刘荣强杨德文
Owner HARBIN INST OF TECH
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