Combined gasket and automatic mounting and pasting jacking mechanism and welding process of combined gasket

Abstract

The invention discloses a combined gasket. The combined gasket is used for forming the back face of a longitudinal seam when the front face of the longitudinal seam of a bridge deck slab and a U-shaped rib is welded, and comprises a soft gasket body used for being attached to the back face of the longitudinal seam tightly, and a hard gasket body used for being attached to the face, away from the longitudinal seam, of the soft gasket body, wherein when the front face of the longitudinal seam is welded, part of the soft gasket body is fused, and the hard gasket body is not fused. The invention further discloses an automatic mounting and pasting jacking mechanism of the combined gasket and a welding process of the combined gasket. Through the combined gasket, the problem of hybrid manufacturing of low-melting-point materials and high-melting-point materials is solved, the gasket cost is reduced, through the automatic mounting and pasting jacking mechanism, the problem that gaskets cannot be mounted in long and narrow U-shaped cavities manually is solved, and through the welding process, the problem that burn through is liable to occur to traditional bridge deck slab U rib welding or the design weld penetration cannot be reached is solved.

Description

technical field [0001] The invention relates to longitudinal seam welding of U-shaped ribs of bridge deck units. More specifically, the present invention relates to a combined liner for single-sided welding and double-sided forming of longitudinal seams, its automatic mounting and tightening mechanism and welding process. Background technique [0002] Orthotropic slab bridges are widely used at home and abroad due to their advantages of light weight and large span. However, there has always been a hidden danger of fatigue cracks that is difficult to overcome in the welding of U-ribs of bridge deck units. At present, the design of U-shaped rib fillet welds on most bridge steel structures at home and abroad is to consider the outer welding, and the penetration requirement can reach 70-80%. Then to meet this requirement, it is necessary to adjust the assembly and welding in the production process. The process is strictly controlled. In the welding process of the existing weldi...

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to provide an automatic mounting and tightening mechanism for a combined liner, which is used for tightening and affixing a soft liner in the cavity formed by the bridge deck unit and the U-shaped rib, and solves the problem of slender and narrow The problem that the liner cannot be manually installed in the U-rib cavity

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