A space-intelligent telescopic transport structure based on multi-stable curved beams

A space-intelligent, multi-stable technology, applied in the direction of transmission, machine/bracket, belt/chain/gear, etc., can solve problems such as heavy structural mass, inability to be integrally formed, and no shape memory

Active Publication Date: 2021-09-10
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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  • A space-intelligent telescopic transport structure based on multi-stable curved beams
  • A space-intelligent telescopic transport structure based on multi-stable curved beams
  • A space-intelligent telescopic transport structure based on multi-stable curved beams

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specific Embodiment approach 1

[0026] Specific implementation one: as Figure 1 to Figure 10 As shown, the present invention discloses a space intelligent telescopic transport structure based on multi-stable curved beams, including a transport support arm 11 and a transport platform 12, and the transport support arm 11 includes several composite negative stiffness unit cells 1. The composite negative stiffness unit cell 1 includes a curved beam structure 1-1 and three supporting structures 1-2. The curved beam structure 1-1 adopts a shape memory polymer containing reinforcing fibers, and the supporting structure 1 -2 Nylon is used, the three supporting structures 1-2 are vertically fixed to the middle and both ends of the curved beam structure 1-1, and the two supporting structures 1-2 at both ends are located on the same side and are connected with the supporting structure 1 in the middle. -2 Opposite setting, two rigid blocks 1-3 are symmetrically arranged on both sides of the curved beam structure 1-1 to...

specific Embodiment approach 2

[0027] Specific implementation two: as figure 1 , 5 As shown, this embodiment is a further description of the specific embodiment 1. The plurality of composite negative stiffness unit cells 1 are in an unfolded state and are at a temperature higher than the glass transition temperature of the material of the curved beam structure 1-1. Under the circumstance, it is compressed under the external load drive to generate bending deformation for shaping. After the shape shaping is completed, 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 at the same time At the same temperature, all the curved beam structures 1-1 return to the unfolded state to release the prestressing force so that the transport support arm 11 extends straight. The heating time of the beam structure 1-1 is longer, and the curved beam structure 1-1 on the outside of the bending is expanded more than the curved...

specific Embodiment approach 3

[0028] Specific implementation three: as figure 1 As shown in the figure, this embodiment is a further description of the specific embodiment 2. The two sides of the curved beam structure 1-1 use polyimide adhesive to stick the electric heating sheet on the reinforcing fiber containing reinforcing fiber in the initial unfolded state. On the inner surface of the shape memory polymer, the temperature of the electric heating sheet is regulated by a temperature controller, so as to regulate the temperature of the curved beam structure 1-1.

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Abstract

The invention relates to a novel space intelligent telescopic transportation structure based on a multi-stable curved beam, which relates to an intelligent telescopic transportation structure. The composite negative stiffness unit cell includes a curved beam structure and three support structures. Two rigid blocks are symmetrically arranged on both sides of the curved beam structure to change the cross-sectional size. Every four composite negative stiffness unit cells are combined to form a composite negative stiffness Honeycomb structure, each of the two opposite composite negative stiffness unit cells is fixed with a spring in the middle of the curved beam structure, and every eight composite negative stiffness honeycomb structures form a support arm unit, and multiple support arm units form a transport support arm. The transport platform is fixedly connected to one end of the transport support arm through an adhesive, and a transport part positioning cover is installed on the outer surface of the transport platform. It has a shape memory function, and can be stretched and bent without dead ends through temperature control. It is light in weight, strong in flexibility, and can also be used in small spaces.

Description

technical field [0001] The invention relates to an intelligent telescopic transport structure, in particular to a space intelligent telescopic transport structure based on a multi-stable curved beam. Background technique [0002] At present, the transportation structure on the market is generally a mechanical transmission structure, and the parts are generally made of rigid materials, and the rigid materials have limited elastic deformation capacity, and their own weight is relatively heavy. , can not be integrally formed, such as working in some narrow spaces will face difficulties. [0003] 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 repeatability, it can absorb energy during impact. , shape conversion metamaterials, and deployable structures have a wide range o...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F16H35/00F16M11/26F16M11/40
CPCF16H35/00F16M11/26F16M11/40
Inventor王长国张季谭惠丰陶强王珂向书毅
OwnerHARBIN INST OF TECH