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Novel space intelligent extendable transportation structure based on multi-stable curved beam

A space-intelligent, multi-stable technology, applied in the directions of transmissions, machines/brackets, belts/chains/gears, etc., can solve the problems of inability to expand and contract in the axial direction, heavy structural quality, and inability to form one piece, achieving flexibility Strong, lightweight effect

Active Publication Date: 2019-10-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the existing transportation machinery has a heavy structure, cannot expand and contract in the axial direction, needs hinge connection at the corner, cannot be integrally formed, and has no shape memory function

Method used

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  • Novel space intelligent extendable transportation structure based on multi-stable curved beam
  • Novel space intelligent extendable transportation structure based on multi-stable curved beam
  • Novel space intelligent extendable transportation structure based on multi-stable curved beam

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specific Embodiment approach 1

[0026] Specific implementation mode one: as Figure 1 to Figure 10 As shown, the present invention discloses a novel space intelligent telescopic transportation structure based on multi-stable curved beams, including a transportation support arm 11 and a transportation platform 12, and the transportation support arm 11 includes several composite negative stiffness units Cell 1, the composite negative stiffness unit cell 1 includes a curved beam structure 1-1 and three support structures 1-2, the curved beam structure 1-1 adopts a shape memory polymer containing reinforced fibers, and the support structure 1-2 is made of nylon, and the three supporting structures 1-2 are vertically fixed together with the middle and both ends of the curved beam structure 1-1 respectively. 1-2 are oppositely arranged, two rigid blocks 1-3 are arranged symmetrically on both sides of the curved beam structure 1-1 to change the cross-sectional size, and every four composite negative stiffness unit ...

specific Embodiment approach 2

[0027] Specific implementation mode two: as figure 1 , 5 As shown, this embodiment is a further description of Embodiment 1. The composite negative stiffness unit cells 1 are in the unfolded state and are at a temperature higher than the glass transition temperature of the material of the curved beam structure 1-1. In this case, compression is performed under the drive of an external load to generate bending deformation for shaping. After the shape is shaped, it is naturally cooled and fixed to form the transport support arm 11. When all the curved beam structures 1-1 of the transport support arm 11 are heated up simultaneously At the same temperature, all the curved beam structures 1-1 return to the unfolded state and release the prestress to make the transport support arm 11 stretch in a straight line. When the beam structure 1-1 heats up for a long time, the curved beam structure 1-1 on the outside of the bend expands more than the curved beam structure 1-1 on the inside o...

specific Embodiment approach 3

[0028] Specific implementation mode three: as figure 1 As shown, this embodiment is a further description of the second embodiment. The two sides of the curved beam structure 1-1 use polyimide adhesive to paste the electric heating sheet on the initially expanded state containing reinforcing fibers. The inner surface of the shape-memory polymer is used to regulate the temperature of the electric heating sheet through a temperature controller, thereby regulating the temperature of the curved beam structure 1-1.

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Abstract

The invention discloses a novel space intelligent extendable transportation structure based on a multi-stable curved beam, and relates to an intelligent extendable transportation structure. Accordingto the intelligent extendable transportation structure, each composite negative stiffness unit cell comprises a curved beam structure and three supporting structures, two rigid blocks are symmetrically arranged on the two sides of each curved beam structure so as to change the cross section size, every four composite negative stiffness unit cells are combined and fixed to form a composite negativestiffness honeycomb structure, a spring is fixed in the middle of the curved beam structures of every two opposite composite negative stiffness unit cells, every eight composite negative stiffness honeycomb structures form a supporting arm monomer, the multiple supporting arm monomers form a transportation supporting arm, a transportation platform is fixedly connected to one end of the transportation supporting arm through an adhesive, and a transportation part positioning cover is arranged on the outer side surface of the transportation platform. The intelligent extendable transportation structure has the advantages that the shape memory function is achieved, extending and no-dead-angle bending can be realized through temperature control, the weight is light, the flexibility is high, andoperation can be carried out in a narrow space.

Description

technical field [0001] The invention relates to an intelligent telescopic transport structure, in particular to a novel space intelligent telescopic transport structure based on multi-stable curved beams. Background technique [0002] At present, the transportation structure on the market is generally a mechanical transmission structure. The parts are generally made of rigid materials, and the rigid materials have limited elastic deformation capacity, and their own quality is relatively heavy. , cannot be integrally formed, such as working in some small spaces will face difficulties. [0003] The multi-stable structure is a new type of lightweight multi-functional structure that has attracted widespread attention at home and abroad in recent years. Due to its special properties or functions such as negative stiffness effect, multi-stable effect, and repeatable characteristics, it can absorb energy in impact. , shape-transforming metamaterials, and expandable structures have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H35/00F16M11/26F16M11/40
CPCF16H35/00F16M11/26F16M11/40
Inventor 王长国谭惠丰张季陶强王珂向书毅
Owner HARBIN INST OF TECH
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