Connection structure of end part of cantilever made of carbon-fiber composite materials

Abstract

The invention discloses a connection structure of an end part of a cantilever which is made of carbon-fiber composite materials. The connection structure is formed by successive adhesion of metal materials and carbon-fiber materials, wherein a metal internal layer (1) is the inner part, a metal outside plate (3) is the outer part, and a carbon-fiber enhanced layer (2) is arranged between the inner part and the outer part; the metal internal layer (1) and the metal outside plate (3) are connected by welding, and form a sandwich structure; the metal inner layer comprises a long metal tube, two short metal tubes and a frame; one end of the frame is provided with a square component, and the other end of the frame is provided with an U-shaped connector; arc-shaped strengthening lining boards are arranged between the square component and the U-shaped connector; and the U-shaped connector is provided with two pairs of hinge holes, wherein one pair of hinge holes is penetrated by the long metal tube which is connected with the U-shaped connector, and the other pair of hinge holes is penetrated by the two short metal tubes respectively, and the two short metal tubes are connected with the two sides of the U-shaped connector respectively. The connection structure is capable of increasing connection strength and wear resistance of the cantilever end provided with hinges, and enabling that alternating load transmitted from the two pairs of hinge holes can be transmitted evenly and smoothly to the cantilever made of carbon-fiber composite materials.

Description

technical field [0001] The invention relates to boom type equipment, more specifically to a connection structure at the end of a carbon fiber composite boom. Background technique [0002] The jib-type engineering machinery and equipment in the prior art (such as concrete pump trucks and excavators) are widely used in the construction field, while the material used for the traditional engineering machinery and equipment is high-quality alloy steel. In large-scale equipment The weight of the jib is greatly increased, on the one hand, the length of the jib and the working range of the jib are limited, and the flexibility and safety of the equipment are reduced. The future development trend of boom type construction machinery equipment is higher safety, stronger flexibility, longer boom length and wider working range, which requires high specific strength and specific modulus, good fatigue resistance, and lightweight Materials with good vibration effect and lighter weight can r...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, provide a connection structure at the end of the carbon fiber composite material boom to solve the problem of connection strength between the metal material and the carbon fiber composite material at the hinge at the end of the boom weak prone to damage

Images