Different material pipe fitting joint structure, joint method and joint of different material pipe fittings

Abstract

A joint structure and joining method of dissimilar pipe fittings and dissimilar pipe joints thereof, which are applied to the assembly of space trusses. The dissimilar pipe joints include an upper joint pipe body and a lower joint pipe body; an upper joint pipe body and a lower joint pipe body , the upper joint pipe body is made of a first metal material, the lower joint pipe body is made of a second metal material different from the first metal material, and the upper joint pipe body and the lower joint pipe body are up and down A first tube body is butted together to define a first tube body. The upper joint tube body and the lower joint tube body are respectively provided with a plurality of upper tabs and corresponding lower tabs protruding outward on the outer surface of the upper joint body for face-to-face stacking. As for the tab, a second tube body protrudes outward from the side of the upper connector tube body away from the first tube body.

Description

technical field [0001] The present invention relates to a joint structure and method of dissimilar pipe fittings and joints of dissimilar pipe fittings, in particular to a joint structure and method of dissimilar pipe fittings applied to the assembly of space trusses of members of dissimilar metal materials and the joining method of dissimilar pipe fittings made of different materials. Assembled pipe fittings. Background technique [0002] At present, the trapezoidal frame composed of longitudinal beams and cross beams is mostly composed of I-shaped steel and channel steel. The load of the whole vehicle is borne by the frame to cause elastic deformation of the frame. The type body is easy to generate a large shear force on the frame, which is easy to cause the weld to break. In order to generate sufficient strength for this kind of building block frame structure, the overall frame is relatively heavy, which relatively compresses the loadable space. High fuel consumption and...

AI Technical Summary

Problems solved by technology

[0003] However, it is difficult to accurately assemble the space truss frame, because the space truss frame usually needs to be joined between two or more pipes, especially when welding is used, which must be assembled from many different positions and different pipes. Angled pipe fittings are joined together, so the relative position of each pipe fitting needs to be fixed first. However, due to the joint of multiple pipe fittings, the relative joints will have degrees of freedom that are difficult to fix. Therefore, complex tools must be used to fix each Joints are carefully fixed to avoid dimensional accuracy from being affected by welding thermal stress during pipe welding

On the other hand, because some space truss frame structures require rigid force, steel must be used, and some only need to provide support, so aluminum alloy can be used to reduce the weight of the vehicle body. However, the aforementioned assembly structures and construction methods cannot be applied to steel and aluminum Welding of dissimilar materials

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