Carbon fiber composite arm rest, method for manufacturing same and concrete pump truck including same

A composite material and production method technology, which is applied in the field of concrete pump trucks and carbon fiber composite booms, can solve the problems of fatigue fracture of high-strength steel booms, poor weldability of high-strength steel plates, and low fatigue resistance, so as to reduce production costs. Reduced equipment cost and excellent performance

Active Publication Date: 2012-10-17
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The steel used has a high density and a large weight, making it difficult to reduce the weight of the pump truck;
[0005] (2) The traditional steel arm frame is made of tailor-welded high-strength steel plates. The welding performance of high-strength steel plates is poor, and due to the poor weldability of high-strength steel plates, cracks are prone to occur at the welds, which shortens the life of the arm frame and easily affects construction. safety;
[0006] (3) The fatigue resistance of traditional high-strength steel is low, and the high-strength steel boom is prone to fatigue fracture, which makes it difficult to meet the requirements of light-weight and ultra-long boom pump trucks;
[0007] (4) The corrosion resistance of the steel arm frame is poor, which further affects the service life of the arm frame
[0011] In the above molding method, the equipment cost and processing cost used are relatively high, which is not conducive to large-scale promotion

Method used

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  • Carbon fiber composite arm rest, method for manufacturing same and concrete pump truck including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Carbon fiber prepreg: The weight raw material is 70% of the fiber material T300 carbon fiber produced by Japan Toray Company and the resin matrix based on AG-80 epoxy resin produced by Shanghai Synthetic Resin Research Institute is 30% by weight.

[0052] production method:

[0053] First inflate the stretchable airbag 1 once through the inflation and deflation port 11 of the stretchable airbag 1 to form an airbag with a first state with an internal pressure of 0.3 MPa, and form an airbag with a first state. The carbon fiber prepreg 2 is laid on the outer surface to form the first transition component. Put the first transition assembly into the vacuum bag 3 and seal it, and evacuate the vacuum bag 3 to an internal pressure of -0.1MPa. Under the interaction between the vacuum bag 3 and the air bag in the first state, the The carbon fiber prepreg is fixed in the first compression to obtain the intermediate transition components. Put the intermediate transition assembly ...

Embodiment 2

[0055] Carbon fiber prepreg: the fiber material T700 fiber produced by Toray Corporation of Japan with a weight content of 50% and the resin matrix based on E-51 epoxy resin produced by the Bluestar Group Wuxi Resin Factory with a weight content of 50%.

[0056] production method:

[0057] First inflate the stretchable airbag 1 once through the inflation and deflation port 11 of the stretchable airbag 1 to form an airbag with a first state with an internal pressure of 0.2 MPa, and form an airbag with a first state. Spray the WB-411 release agent of AXEL company on the outer surface, lay the carbon fiber prepreg 2 on the outer surface of the airbag with the first state sprayed with the release agent, and put the first transition assembly into the vacuum bag 3 Seal in the center, and vacuumize the vacuum bag 3 to an internal pressure of -0.07MPa, and carry out the first compression and fixation of the carbon fiber prepreg under the interaction between the vacuum bag 3 after vacu...

Embodiment 3

[0059]Carbon fiber prepreg: 60% by weight of the fiber material T700 fiber produced by Toray Corporation of Japan and 40% by weight of the matrix resin produced by ACG Company based on MTM82 phenolic resin.

[0060] production method:

[0061] First inflate the stretchable airbag 1 once through the inflation and deflation port 11 of the stretchable airbag 1 to form an airbag with a first state with an internal pressure of 0.4 MPa, and form an airbag with a first state. The release agent is sprayed on the outer surface, and the prepreg 2 is laid on the outer surface of the airbag in the first state sprayed with the release agent. On the outer surface of the prepreg 2, the release cloth 4, the perforated isolation film 5, and the air felt 6 are sequentially laid to form a first transition component. Put the first transition assembly into the vacuum bag 3 and seal it, and evacuate the vacuum bag 3 to an internal pressure of -0.085MPa. Under the interaction between the vacuum bag...

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Abstract

The invention discloses a carbon fiber composite arm rest, a method for manufacturing the same and a concrete pump truck including the same. The method for manufacturing the carbon fiber composite arm rest comprises the following steps of: filling air into a contractible airbag to form the airbag with a first status, laying carbon fiber prepreg on the outer surface of the airbag to obtain a firsttransitional component; placing the first transitional component inside a box mold, filling air into the inside of the airbag with the first status, and compressing and shaping the carbon fiber prepreg to obtain a second transitional component; warming and solidifying the second transitional component, and afterwards cooling and demoulding the second transitional component to obtain the carbon fiber arm rest. The method for manufacturing the carbon fiber composite arm rest provided by the invention goes through many times of shaping, so that the carbon fiber prepreg is more compact in structure, which helps to prepare the carbon fiber composite arm rest with excellent performance. Only simple equipments are utilized in the method for manufacturing the carbon fiber arm rest, no autoclave is utilized, so that the equipment cost and production cost are reduced.

Description

technical field [0001] The invention relates to the field of concrete pumping, in particular to a carbon fiber composite boom, a production method thereof and a concrete pump truck comprising the same. Background technique [0002] At present, more and more concrete transportation work is done by concrete pump truck. Concrete pump truck equipment is undergoing a huge change, and is developing in the direction of lightweight and ultra-long. Today, as the design level of concrete pump trucks has become increasingly mature, it is difficult to achieve a huge breakthrough in the lightweight of pump truck products only from the perspective of structural design. [0003] With the deepening of research, technicians found the following deficiencies in traditional pump truck products: [0004] (1) The steel used has a high density and a large weight, making it difficult to reduce the weight of the pump truck; [0005] (2) The traditional steel arm frame is made of tailor-welded hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B60P3/16
CPCB60P3/16B29C70/34B29C70/446B29K2063/00B29K2105/0872B29K2307/04B29C70/342B29C70/443E04G21/0445F16L9/123
Inventor 李晓超王佳茜李庶
Owner ZOOMLION HEAVY IND CO LTD
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