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Telescopic driving device with tension-compression bidirectional cushioning function

A telescopic drive, two-way buffering technology, which is applied in the directions of the landing device of the astronautical vehicle and the system for the return of the astronautical vehicle to the earth's atmosphere, etc. The effect of good operation quality, reliable operation and high degree of generalization

Active Publication Date: 2019-01-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0002] At present, the lander for detecting alien objects can only maintain a buffered state after landing, and does not have the ability to actively adjust the attitude. There will be abnormal states such as attitude tilt and cannot be actively adjusted, which will affect the implementation of subsequent detection tasks

Method used

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  • Telescopic driving device with tension-compression bidirectional cushioning function
  • Telescopic driving device with tension-compression bidirectional cushioning function
  • Telescopic driving device with tension-compression bidirectional cushioning function

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Embodiment Construction

[0030] In order to make the object, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as figure 1 As shown, a retractable device of the present invention includes an outer cylinder 1, an angular contact ball bearing 2, a ball screw 3, a compression buffer material 4, a screw nut 5, a piston rod 6, a set screw 7, a spring 18, a micro Limit pin bolt 9, stretch cover 10, stretch buffer material 11, end cover 12, closing bolt 13, spring II 14, limit pin 15, ball hinge 16, return spring 17, linear bearing fastening screw 18, Linear bearing 19, servo motor 20, reducer 21, motor mounting bracket 22, driving synchronous pulley 23, synchronous belt 24, driven synchronous...

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Abstract

The invention discloses a telescopic driving device with a tension-compression bidirectional cushioning function, belonging to the field of aerospace machinery. As a compression energy-absorbing material is arranged inside the outer barrel, and a tensile energy absorbing material is arranged outside the outer barrel and a ball screw are arranged inside the outer barrel, to coordinate with the tension device and the compression device, the telescopic driving device with a tension-compression bidirectional cushioning function can realize bidirectional energy absorption of the lander auxiliary cushion during landing and the attitude adjustment of the lander body after landing, is beneficial to expand the effective detection range of the lander and enhance its operational efficiency, has the advantages of reasonable structure design, reliable performance and high universality, and can meet the functional requirements of a telescopic driving device integrating tension and compression cushioning performance.

Description

technical field [0001] The invention relates to a telescopic drive device with a tension-compression bidirectional buffer function, which belongs to the field of aerospace machinery. Background technique [0002] At present, the lander for detecting alien objects can only maintain a buffered state after landing, and does not have the ability to actively adjust the attitude. There will be abnormal states such as attitude tilt and cannot be actively adjusted, which will affect the implementation of subsequent detection tasks. [0003] Therefore, in our country's future landing detection of extraterrestrial bodies, requirements are put forward for the attitude adjustment ability and mobility of the lander after a soft landing, so as to meet the needs of a wider range of detection tasks. Considering that aerospace missions have strict requirements on the structural quality and envelope size of the soft landing device, it is very useful to develop a telescopic drive device with ...

Claims

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Application Information

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IPC IPC(8): B64G1/62
CPCB64G1/62
Inventor 贾山周金华陈金宝陈萌聂宏袁英男钱佳程
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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