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Self-driven repetitive locking and releasing mechanism with honeycomb structure and its 4D printing preparation method and locking and releasing method

A technology for repeatedly locking and releasing mechanisms, which is applied to space navigation equipment, 3D object support structures, motor vehicles, etc., can solve problems such as large mass of nearby devices and explosive bolts, explosion fragments or gas damage, and huge impact, etc., to achieve Superior deformation repeatability, no pollution strength, high reliability effect

Active Publication Date: 2021-03-09
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 traditional explosive bolt releases the mechanism due to the huge impact caused by the explosion, the explosive fragments or gas damage the nearby devices and the large quality of the explosive bolt, a self-driven repetitive locking and releasing mechanism with a honeycomb structure is proposed. 4D printing preparation method and locking release method thereof

Method used

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  • Self-driven repetitive locking and releasing mechanism with honeycomb structure and its 4D printing preparation method and locking and releasing method
  • Self-driven repetitive locking and releasing mechanism with honeycomb structure and its 4D printing preparation method and locking and releasing method
  • Self-driven repetitive locking and releasing mechanism with honeycomb structure and its 4D printing preparation method and locking and releasing method

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specific Embodiment approach 1

[0040] Specific implementation mode one: combine Figure 1~4 Describe this embodiment, the self-driven repeated locking release mechanism with honeycomb structure in this embodiment is composed of a locking member and a connecting member; the locking member is composed of a locking member base 1 and a deformation rod 2; the connecting member is composed of a connecting rod 3 and Connecting rod fixed block 4 forms;

[0041]One end of the deformation rod 2 is affixed to the base of the locking member 1, and several through holes are arranged on the base of the locking member 1; the main body of the deformation rod 2 is composed of several plane layers and several honeycomb layers, and the honeycomb layer is arranged on the adjacent between plane layers;

[0042] The main material of the planar layer and the honeycomb layer of the deformation rod 2 is a shape memory polymer, and a fiber reinforced phase is arranged in the shape memory polymer, and two wires 5 are arranged on the...

specific Embodiment approach 2

[0050] Embodiment 2: This embodiment differs from Embodiment 1 in that: the connecting rod 3 and the connecting rod fixing block 4 are made of aluminum alloy or titanium alloy. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0051] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the honeycomb unit in the honeycomb layer is a hexagonal prism, the cross section of the hexagonal prism is hexagonal, and the side length of the hexagon is 0.25-0.35 mm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a self-driving repetitive locking releasing mechanism with a honeycomb structure and a four-dimensional printing preparation method and a locking releasing method thereof to solve the problem of surrounding device damaging caused by huge impact and explosive debris or gas generated in exploding of mechanism releasing of traditional explosive bolts and the problem of high weight of the explosive bolts. A locking releasing mechanism is composed of a locking piece and a connecting piece. The locking piece is composed of a locking piece base and a deformation rod. The connecting piece is composed of a connecting rod and a connecting rod fixing block. Material of the main body of the deformation rod is a shape memory polymer. During application, shaping is firstly conducted, and the deformation rod after shaping is arranged at the connecting rod in a sleeving mode to achieve locking, and then the deformation deformation rod is driven to recover the shape to completereleasing. The locking releasing mechanism completes releasing during the shape recovery process, excessive impact force does not generated instantly; and the deformation rod reduces occupied space in the satellite launching process. The self-driving repetitive locking releasing mechanism is suitable for locking releasing of an antenna or a solar wing.

Description

technical field [0001] The invention relates to a self-driven repetitive locking and releasing mechanism, a preparation method thereof and a locking and releasing method. Background technique [0002] During the working process, the antenna and solar wing of the artificial satellite need to occupy a large area to meet the required working conditions. Therefore, it needs to be folded and folded during the launch process to reduce the space occupation. After reaching the designated position, it needs to be unlocked and unfolded. Therefore, A lock release mechanism is essential. Traditional pyrotechnics such as explosive bolts are a separation device widely used in the fields of aerospace and weaponry, which can realize the locking and releasing of structures such as satellite antennas and solar wings, but the explosion of explosive bolts will cause damage to surrounding structures. If there is a large impact, debris and gas generated by the explosion will damage nearby device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/22B64G1/44H01Q1/08H01Q1/28B29C64/118B29C64/171
CPCB29L2031/3097B64G1/222B64G1/44B29C64/118B29C64/171H01Q1/08H01Q1/288
Inventor 刘彦菊冷劲松张豆刘立武兰鑫
Owner HARBIN INST OF TECH
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