Preparation method of foldable fiber reinforced resin based composite truss, and truss

A fiber-reinforced resin and composite material technology, applied in the field of trusses, can solve the problems of large space occupation and heavy truss quality, and achieve the effects of saving space, compact structure and high mechanical properties

Active Publication Date: 2020-04-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a method for preparing a foldable fiber-reinforced resin-based composite truss to solve the problems of heavy mass and large space occupation of existing trusses

Method used

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  • Preparation method of foldable fiber reinforced resin based composite truss, and truss
  • Preparation method of foldable fiber reinforced resin based composite truss, and truss
  • Preparation method of foldable fiber reinforced resin based composite truss, and truss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] combine Figure 1-6 Shown, a kind of preparation method of foldable fiber-reinforced resin matrix composite truss comprises:

[0060]S1. According to the shape and size of the truss, the mandrel unit 1 for preparing the structural unit of the truss is set, and the release cloth is pasted on the mandrel unit 1, wherein the mandrel unit 1 includes an end mandrel 11 and a reinforcing mandrel 12 , support mandrel 13, and end mandrel 11, reinforcement mandrel 12, support mandrel 13 from the direction shown in the figure, from left to right, according to end mandrel 11, reinforcement mandrel 12, support mandrel 13, reinforcement core The order of the mold 12 and the end mandrel 11 is arranged to form a mandrel unit 1, that is, the end mandrel 11 and the reinforcing mandrel 12 are located at both ends of the supporting mandrel 13, and the reinforcing mandrel 12 is located at the end mandrel 11 and the adjacent end Between the supporting mandrels 13 of the mandrel 11; the supp...

Embodiment 2

[0083] combine Figure 7-10 As shown, a foldable fiber-reinforced resin-based composite truss includes an upper run 3 and a lower run 4; a plurality of supporting webs 5 are arranged between the upper run 3 and the lower run 4; the upper run 3 and the lower run 4 The ends are connected by the end web 6; a reinforcing web 7 is arranged between the end web 6 and the supporting web 5 adjacent to the end web 6; one end of the reinforcing web 7 is connected with the upper chord beam 3, and the The other end is connected with the lower string 5; the upper string 3, the lower string 4, the support web 5, the end web 6, and the reinforcement web 7 are made of fiber-reinforced resin-based composite materials.

[0084] In this embodiment, the upper chord 3, the lower chord 4, the support web 5, the end web 6 and the reinforcement web 7 constituting the foldable fiber-reinforced resin-based composite truss are all made of fiber-reinforced resin-based composite materials, so that this imp...

Embodiment 3

[0095] combine figure 1 , figure 2 and Figure 7 As shown, a truss-type retractable space capsule includes a plurality of cabin support beams 8 and a plurality of head support beams 9; the cabin support beams 8 and head support beams 9 are reinforced by a plurality of the above-mentioned foldable fibers Resin-based composite material truss connection structure; the two ends of multiple cabin support beams 8 are supported by hoop support beams 81 to form a cylindrical frame structure 82; the two ends of multiple head support beams 9 are supported by hoop support beams 81 and ring Support to the butt joint 83 to form a circular platform frame structure 84; the circular platform frame structure 84 extends to the outside of the cylindrical frame structure 82 along the axial direction of the cylindrical frame structure 82; the hoop supporting beam 81 and the hoop butt joint 83 are all made of fiber reinforced resin Made of base composite material. Among them, in order to enhanc...

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Abstract

The invention provides a preparation method of a foldable fiber reinforced resin based composite truss, and the truss. According to the preparation method, a fiber reinforced layer is laid on a trussmold, resin is guided into the fiber reinforced layer through a vacuumizing auxiliary resin injection process, the foldable fiber reinforced resin based composite truss is prepared, the preparation process is simple, the preparation cost is low, few bubbles are introduced in the preparation process, and the prepared truss is compact in structure and high in mechanical property. The truss manufactured through the method has the advantages of being light in weight, high in mechanical property, resistant to fatigue, not prone to corrosion and not prone to aging, the shape of the guided-in resin can be changed in a heating mode, the folding and unfolding performance of the manufactured truss is achieved, and the occupied space of the truss is saved.

Description

technical field [0001] The invention relates to the technical field of trusses, in particular to a preparation method of a foldable fiber-reinforced resin-based composite material truss and the truss. Background technique [0002] The truss structure has a large material utilization rate, and can meet the strength and stiffness requirements of the structure with less material, and is widely used in large structures in the fields of aerospace and civil engineering. The traditional truss structure is usually made of metal, which has the disadvantages of heavy mass and large storage space. Especially in the field of aerospace, the carrying of large-scale spacecraft is limited by the envelope of the rocket. Contents of the invention [0003] In view of this, the present invention aims to propose a method for preparing a foldable fiber-reinforced resin matrix composite truss, so as to solve the problems of heavy mass and large space occupation of existing trusses. [0004] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B64G1/22
CPCB29C70/36B64G1/22
Inventor 冷劲松刘彦菊明光清刘立武
Owner HARBIN INST OF TECH
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