Method for manufacturing carbon fiber arm support for concrete pump truck
A concrete pump truck and carbon fiber technology, applied in the field of composite materials, can solve problems such as heavy weight, poor mobility, corrosion, etc., and achieve the effect of large specific modulus, superior performance, and high specific strength
Inactive Publication Date: 2011-02-16
WEIHAI GUANGWEI COMPOSITES +1
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Problems solved by technology
At present, the boom frame of the pump truck is mostly made of high-strength steel, which is heavy, has high requirements on the frame and chassis, high fuel consumption, and poor maneuverability; at the same time, the working condition of the pump truck is always under the action of dynamic load. There is still a coupling effect between the components of the frame structure, which is prone to local deformation and cracking due to fatigue damage; in addition, the working environment of the pump truck is relatively harsh, and corrosion problems are prone to occur
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[0011] Such as figure 1 As shown, the present embodiment is provided with a mandrel 1, and the carbon fiber prepreg 2 used to manufacture the carbon fiber arm frame for the concrete pump truck is covered on the outer surface of the mandrel 1, and the outside of the carbon fiber prepreg 2 is covered with a vacuum film 3 , the two ends of the vacuum film 3 are sealed on the two ends of the mandrel 1, the vacuum film 3 is provided with an air extraction hole 5, the whole mold is put into the autoclave 4, and the autoclave 4 is provided with an air inlet 6. All the air inside the vacuum membrane 3 is exhausted through the suction hole 5 to form a vacuum. After passing the pressure reduction test, the compressed air is input through the air inlet 6 to pressurize, and the electric heating tube is used for heating and curing.
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The invention relates to a method for manufacturing a carbon fiber arm support for a concrete pump truck, which comprises the following steps of: arranging a hollow core mold, laying a raw material for manufacturing the carbon fiber arm on the external surface of the core mold, coating the exterior of the raw material by using a vacuum film, sealing both ends of the vacuum film on both ends of the core mold, arranging air exhaust holes on the vacuum film, putting the entire mold in an autoclave, pressurizing by using compression air, and curing to form by using an electric heating tube to heat. The carbon fiber arm support for a concrete pump truck, processed by using the method, fully exerts the advantages of high specific strength, large specific modulus, fatigue resistance and corrosion resistance of a carbon fiber reinforced epoxy resin composite material, so that the pump truck arm support has excellent performance, and the weight of the arm support can be reduced by 40-60%. Meanwhile, because no outer mold is used in the invention, the investment to molds, tooling and equipment is greatly reduced, and the product design can be changed conveniently. Meanwhile, the method can also be applied to the fields of fire truck arm supports, suspension arms of hoisting equipment, transmission poles, communication poles and the like.
Description
technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for manufacturing a carbon fiber arm frame for a concrete pump truck. Background technique [0002] As we all know, the boom is one of the most important key components of the concrete pump truck, and its safety, reliability and advancement are the keys to determine the core competitiveness of the pump truck. At present, the boom frame of the pump truck is mostly made of high-strength steel, which is heavy, has high requirements on the frame and chassis, high fuel consumption, and poor maneuverability; at the same time, the working condition of the pump truck is always under dynamic load. There is still a coupling effect between the components of the frame structure, which is prone to local deformation and cracking due to fatigue damage; in addition, the working environment of the pump truck is relatively harsh, and corrosion problems are prone to occur. C...
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IPC IPC(8): B29C51/10B29C51/26
Inventor 王朝辉段成金夏向欣
Owner WEIHAI GUANGWEI COMPOSITES
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