Guy cable rod type one-dimensional stretching arm

A technology of stretching arms and cable rods, which is applied to aerospace equipment, aerospace vehicles, aircraft, etc., can solve the problems of limited structural strength, large mass, and difficulty in achieving precise positioning, and achieve simple device structure, large ratio, and small mass effect

Inactive Publication Date: 2010-08-04
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Thin-walled tubular extension arm heel warping limits structural strength, resulting in low thermal stability, bending and torsional rigidity, making accurate positioning difficult
[0004] The rigidity of the extension arm is relatively poor during the expansion process of the disc-type extensi

Method used

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  • Guy cable rod type one-dimensional stretching arm
  • Guy cable rod type one-dimensional stretching arm
  • Guy cable rod type one-dimensional stretching arm

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1:

[0027] The cable rod type one-dimensional extension arm consists of a set of extension mechanisms, the extension mechanism is composed of four hollow support rods 4 and two rigid frames 5, and the extension cable 10 passes through the support rods 4 Hollow and fixed on the turning taper sleeve 23 of rigid frame 5 corners, one end is fixed on the top of stretching mechanism, and the other end is fixed on the stretching roller 15 that is connected with stretching arm seat 7 by rotating pair, described stretching roller 15 and stretching The motor 16 is connected, and the pulling cables 6 pass through the diagonal apertures of the rigid frame 5 respectively, and one end is fixed on the extension arm seat, the other end is fixed on the pulling roller 1, and two anti-rotation rods 13 are fixed on the On the topmost rigid frame mentioned above, and form a moving pair with the linear bearings fixed on the rigid frame of the next layer, starting from the top layer,...

Example Embodiment

[0028] Example 2:

[0029] The said cable rod type one-dimensional extension arm, the said rigid frame is a square frame, the four corners are respectively equipped with flip taper sleeves and drilled with four small holes, and the hollow support rod is locked by the flip cone 17. The nut 18 is fixedly connected with the hollow rod 19 to form. The unfolding motor 16 is connected with the unfolding roller 15 through a pinion 9 and a bull gear 8 .

Example Embodiment

[0030] Example 3:

[0031] For the cable rod type one-dimensional extension arm, when the extension mechanism is in the unfolded state, the adjacent small holes through which the same pulling cable passes are located on the two sides of the same side of the extending arm, and the pulling cable is in the shape of " Z" shape; when the stretching mechanism is folded, the small hole passed by the same pull cable is on the same axis, and the pull cable is straightened; driven by the pull motor, the pull roller can be tightened and loosened by reversing forward and backward The retracting cable is driven by the unfolding motor, and the forward and reverse rotation of the unfolding roller can tighten and relax the unfolding cable.

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PUM

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Abstract

The invention discloses a guy cable rod type one-dimensional stretching arm, which mainly has the following three forms: a thin-wall tubular stretching arm, a disc pressure lever type stretching arm and a hinge bar type stretching arm. The guy cable rod type one-dimensional stretching arm consists of a set of stretching mechanism; the stretching mechanism consists of four hollow support rods (4) and two rigid frameworks (5); an expanding guy cable (10) is connected with a turnover conical sleeve (23) fixed at the corner of the rigid framework (5) through the hollowness of the support rods (4); an expanding roller (15) is connected with an expanding motor (16); a furling guy cable (6) passes through diagonal pores of the rigid framework (5) respectively, and one end of the furling guy cable is fixed on a stretching arm seat, while the other end is fixed on a furling roller (1); two anti-rotating rods (13) are fixed on the rigid framework at the topmost layer; a linear bearing (12) is arranged at the corresponding position on every one layer of rigid framework; and the expanding motor (16) and a furling motor (3) are torque motors. The guy cable rod type one-dimensional stretching arm is a spatial rod-shaped stretching arm in the field of spaceflight.

Description

Technical field: [0001] The invention relates to a cable-type rod-shaped deployment mechanism, in particular to a one-dimensional extension arm. Background technique: [0002] Due to the limitation of the envelope size of the payload in the vehicle, the large space structure must be folded in a limited space and stretched into the expected configuration after entering orbit. The rod-shaped space extension arm is the most widely used space deployment mechanism. There are three main forms of space rod-shaped extension arms currently used in the aerospace field: thin-walled tubular extension arms, disc-press rod type extension arms, and articulated rod-type extension arms. [0003] Heel warping of the thin-walled tubular extension boom limits structural strength, resulting in low thermal stability, bending and torsional stiffness, and difficult precise positioning. [0004] The rigidity of the extension arm is relatively poor during the expansion process of the disc-type exten...

Claims

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Application Information

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IPC IPC(8): B64G1/22
Inventor 郝广平张永德董玉红闫泽于伟真孟凡竹杨振琪
Owner HARBIN UNIV OF SCI & TECH
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