Special extrusion device matched with pipe fitting

Abstract

The invention discloses a special extrusion device matched with a pipe fitting, and belongs to the technical field of pipe fitting connection and the engineering field. The special extrusion device comprises an upper grinding head, a lower grinding head, an upper grinding head base, a base and a power device. N convex ribs are arranged on the inner walls of the upper grinding head and the lower grinding head. During extrusion, the upper grinding head and the lower grinding head are in butt joint from the upper direction and the lower direction, and a cylindrical pipe fitting containing area is formed by the inner walls of the two grinding heads. By means of the extrusion device, when thin-wall ribbed pipe fittings, steel-plastic composite pipe fittings, pipe fittings and outer sleeve pipe fittings arranged on the pipe fittings in a sleeving mode, especially the last two types of pipe fittings, are extruded, uniform deformation of the pipe fittings and molding layers of the pipe fittings and uniform deformation of the pipe fittings and the outer sleeve pipe fittings can be generated, and therefore the inner pipe fittings and the outer pipe fittings are firmly connected together, and the problems of unreliability, deformation, water leakage and the like when thin-wall ribbed pipe fittings, steel-plastic composite pipe fittings, pipe fittings and outer sleeve pipe fittings are connected are well solved.

Description

technical field [0001] The invention relates to the field of pipe fitting connection engineering, in particular to a special extruding device for matching pipe fittings, so as to realize extrusion fitting of fittings on pipe fittings and the like. Background technique [0002] At present, a considerable part of the acoustic testing tubes and grouting tubes used for foundation pile detection uses thin-walled steel tube acoustic testing tubes with a wall thickness of 1.0 mm to 2.0 mm. In order to make the connection watertight, two ribs protrude outward from the outer connecting pipe, and a sealing ring is placed inside the ribs. For this kind of pipe fittings, the current common method is to use hydraulic pliers with grooves to squeeze them to connect. After the connection, the water leakage performance is better, but the drawing performance is poor. The two pipes are often easily separated during the lifting process, which seriously affects quality. [0003] Recently, a st...

AI Technical Summary

Problems solved by technology

For this kind of pipe fittings, if the above-mentioned hydraulic pliers are used for construction, the water-stopping effect can be achieved, but the pulling force is far from enough and cannot reach the required 3000N, which seriously affects the quality of the acoustic pipe

[0004] In addition, for pipe fittings with different diameters, different molds need to be made, which is inconvenient to use and relatively high in cost

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