Large rod-cable extending arm extension driving mechanism

A technology of driving mechanism and extending arm, which is applied in the direction of motor vehicles, space navigation equipment, space navigation aircraft, etc., can solve the difficulty in realizing the rotary support of the spiral sleeve, the low machining accuracy of the four-thread spiral sleeve, the manufacturing accuracy, and the manufacturing process. Require high-level problems, achieve the effect of light weight, simple structure, and low processing and manufacturing technology requirements

Inactive Publication Date: 2009-08-26
BEIJING INST OF SPACECRAFT SYST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a large-scale cable-rod type extension arm expansion drive mechanism, which can solve the problem that the expansion and retraction of the existing large-scale cable-rod type extension arm is driven by a four-thread spiral lifting sleeve type mechanism, which has manufacturing accuracy, High manufacturing process requirements, low machining accuracy or deformation of the four-thread spiral sleeve will cause the cable-rod extension arm to "stuck", difficult to realize the rotary support of the spiral sleeve, and expensive manufacturing costs

Method used

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  • Large rod-cable extending arm extension driving mechanism
  • Large rod-cable extending arm extension driving mechanism
  • Large rod-cable extending arm extension driving mechanism

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1 to Figure 8 This embodiment is described. This embodiment consists of a bottom end cover 1, a retracting sleeve 2, a derotation sleeve 3, four sets of chain lifting mechanisms, a driving sleeve 4, an extension arm tooth piece 5, a roller 6, and a cable rod type extension arm assembly, eight linear tracks 9 and a reversing transmission mechanism; each group of chain lifting mechanisms is composed of a driving sprocket 10, a chain 11, a chain tooth 12, a driven sprocket 13, and a sprocket support 14; The bottom end cover 1, the retracting sleeve 2, the derotation sleeve 3, and the driving sleeve 4 are fixedly connected together from bottom to top in order to provide a container for the cable rod type extension arm in the folded state. The cloth is provided with four groups of curved grooves, each group of curved grooves is composed of two symmetrically arranged curved grooves 15, and the inner wall of the retracting slee...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination Figure 5 To illustrate this embodiment, the reversing transmission mechanism of this embodiment is composed of a motor 19, a first short transmission shaft 20, a second short transmission shaft 21, a first long transmission shaft 22, a second long transmission shaft 23, and a bevel gear pair 24 ; The first short transmission shaft 20, the second short transmission shaft 21, the first long transmission shaft 22 and the second long transmission shaft 23 are respectively fixed with the driving sprocket 10, and the motor 19 and the first short transmission shaft 20 drive connection, between the first short transmission shaft 20 and the first long transmission shaft 22, between the first long transmission shaft 22 and the second long transmission shaft 23 and between the second long transmission shaft 23 and the second short transmission shaft 21 respectively The driving ring is formed through the transmission connection of the ...

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 2 , Figure 6 Illustrate this embodiment, the cable rod type extension arm 18 of this embodiment is made up of lower corner block 25, four middle corner blocks 26, upper corner block 27, ball hinge 28, four cross bars 29, four connecting rods 8; A cross bar 29 is rigidly connected with four middle corner blocks 26 to form a square rigid plane, and the middle corner block 26 is fixedly connected with the upper corner block 27 and the lower corner block 25 to form two ball sockets. The four connecting rods 8 are vertically arranged on Between two adjacent square rigid planes and located at the four corners of the square rigid planes, both ends of each connecting rod 8 are respectively hinged with the ball sockets corresponding to the two adjacent square rigid planes. Such arrangement has the advantages of simple structure and reliable operation. Other components and connections are the same as those in the first em...

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Abstract

The utility model relates to a large-scale cable rod type extension arm expansion drive mechanism, which relates to a space cable rod type extension arm expansion drive mechanism. It can solve the problem that the large cable-rod extension arm in the existing space is driven by a four-thread spiral lifting sleeve mechanism, which has high manufacturing precision and high manufacturing process requirements, and the extension arm is easy to "stuck". The bottom end cover (1), the retracting sleeve (2), the derotation sleeve (3), and the driving sleeve (4) are fixed together, and the inner wall of the derotation sleeve (3) is provided with eight curved grooves ( 15), eight linear tracks (9) are fixedly installed on the inner wall of the retracting sleeve (2), and the driving sprocket (10) and driven sprocket (13) driven by the chain (11) and the driving sleeve (4) Fixed connection, three chain tooth pieces (12) are equidistantly installed on each chain (11), and rollers (6) are fixedly installed on each top angle of the cable-bar type extension arm assembly, and the rollers (6) are inlaid with The stretch arm tooth piece (5), the chain tooth piece (12) meshes with the stretch arm tooth piece (5), and the driving sprocket (10) is connected by a reversing transmission mechanism. The invention has the advantage of strong ability to accommodate the deformation and processing errors of the extension arm.

Description

technical field [0001] The invention relates to a space extension arm deployment driving mechanism. Background technique [0002] The space cable rod type extension arm has the characteristics of high retraction rate, high rigidity, high deployment positioning accuracy, high reliability, good mechanical and thermal stability, repeatable deployment and retraction, and theoretically unlimited length deployment. At present, the space cable-rod extension arm has been widely used. Its main function is to deploy flexible solar panels; support extendable antennas, synthetic aperture radars, and space telescopes; In order to reduce mutual interference and so on. The driving mechanism of the space cable-rod extension arm determines whether it can be normally deployed and retracted in the space environment to ensure its normal operation. In addition, factors such as the complexity and quality of the driving mechanism, structural size, reliability, and cost directly restrict the sele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/22
Inventor 刘荣强邓宗全郭宏伟罗阿妮罗昌杰
Owner BEIJING INST OF SPACECRAFT SYST ENG
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