Joint for carbon fiber composite arm section and preparation method of joint

Abstract

The invention provides a joint for a carbon fiber composite arm section and a preparation method of the joint. The joint comprises a carbon fiber composite joint shell, a joint inner core and an end part connecting embedded part, wherein the carbon fiber composite joint shell is filled with the joint inner core; and the end part connecting embedded part is embedded in the end part in the carbon fiber composite joint shell, is inlaid in the joint inner core and is used for connecting the end parts of the carbon fiber composite arm sections. According to the joint for the carbon fiber compositearm section, the connecting part adopts a hollow integral metal frame composite coated embedding form, and the weight and the interface connecting strength are both considered; the joint inner core isprovided with a three-dimensional gridded reinforcer in a penetrating manner, and the internal traction of the boom joint shell is enhanced; and the joint shell is prepared by compounding with different forming processes, so that relatively low mass and cost can be realized, and relatively high structural effect can be achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete pump trucks, and in particular relates to a carbon fiber composite boom joint joint and a preparation method thereof. Background technique [0002] Concrete pump trucks play an irreplaceable role in many areas of modernization. With the development of the modern construction field, the boom height requirements of concrete pump trucks are getting higher and higher, so the development trend of longer and higher booms of concrete pump trucks has become inevitable. The boom frame of traditional concrete pump trucks is made of high-strength alloy steel, and the weight increases with the increase of the deployment height, which puts forward higher requirements for the loading and safety performance of concrete pump trucks, and has great impact on the construction scheduling of pump trucks and the work site. have great limitations. High-strength alloy steel has certain defects and hidden dangers in we...

AI Technical Summary

Problems solved by technology

In this technology, the metal shafts bearing the force at the end are processed in series and the outer ring is reinforced with carbon cloth, and embedded in the foam material, because the corresponding shaft hole embedded in the foam material is only supported by the composite material shell on both sides. Positioning and connection constraints are unreasonable in the design of force transmission, and there are hidden dangers of fatigue damage at the position of the shaft hole for long-term use

[0004] Therefore, the existing composite boom joints have problems of insufficient strength, single forming method, high cost, or general surface quality control

Images