A steel gas pipeline hydraulic external counterpart

Abstract

The invention relates to the technical field of welding auxiliary tools, in particular to a steel gas pipeline hydraulic external mouthpiece, which includes a positioning plate, a central positioning piece, a side positioning piece and a synchronous feeding mechanism. The central positioning piece includes two symmetrically arranged middle halves ring and a first hydraulic cylinder, the two middle half rings are hingedly arranged, and the hinge shafts of the two middle half rings are arranged on the upper surface of the positioning plate, the first hydraulic cylinder can drive the two middle half rings against each other, and the two side The positioning parts are arranged symmetrically on both sides of the axis direction of the middle half-ring, and the limit rods are fixedly arranged on the positioning plate. The feeding mechanism can drive the two side positioning members to move synchronously towards or away from the central positioning member relative to the positioning plate. The invention realizes the function of facilitating staff to adjust the welding seam between two pipelines.

Description

technical field [0001] The invention relates to the technical field of welding auxiliary tools, in particular to a steel gas pipeline hydraulic external mouthpiece. Background technique [0002] Large-diameter steel gas pipeline is an important means of gas transportation. A large amount of welding work is required in the construction of gas pipeline. At present, the preparatory work before welding construction of large-diameter steel gas pipeline mainly includes nozzle correction, assembly and welding seam The gap adjustment is mainly completed in two ways, one is done manually, that is, the pipe layer is used to cooperate with the manual external counterpart, and the hydraulic jack or the adjustment bolt is manually operated to complete the correction, alignment and weld gap of the nozzle Adjustment; the other is completed in a semi-automatic way, that is, the pipelayer is used to cooperate with the internal counterpart, and the internal counterpart performs automatic tens...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the above-mentioned prior art is that the pipelayer lifts the two pipes and places them horizontally, and the staff manually adjusts the two pipes so that the axial and radial directions of the two pipes can be aligned, and then work The personnel need to leave a welding seam between the two pipes so that the staff can weld the two pipes through the welding torch. However, the manual adjustment of the axial distance between the two pipes by the staff is prone to errors, thus making the distance between the two pipes The width of the welding seam is not easy to control accurately, so it may affect the welding work

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