Efficient steel pipe sheet spot welding jig

Abstract

The invention relates to an efficient steel pipe sheet spot welding jig. The efficient steel pipe sheet spot welding jig comprises a base, two side connecting plates and two end connecting plates. A plurality of arched supporting plates are arranged at the top of the base. The plurality of supporting plates are evenly arranged in the width direction of the base at intervals, and the two supporting plates located on the outer side are located on the edges of the two sides of the top of the base correspondingly. The same sides of the tops of the supporting plates are each provided with positioning strips. Each positioning strip is provided with a plurality of positioning grooves which are evenly formed in the length direction of the base at intervals. The two side connecting plates are both in an arch shape and are arranged on the two sides of the top of the base correspondingly. The two end connecting plates are arranged at the two ends of the top of the base correspondingly, placed in the radial direction of the axis of the supporting plate and connected with the two ends of the supporting plates correspondingly. The tailor-welding efficiency of steel pipe sheets is greatly improved, the shape and position precision of the steel pipe sheets is guaranteed, and the efficient steel pipe sheet spot welding jig has the advantages of being simple in structure, convenient to operate, low in manufacturing cost and the like.

Description

technical field [0001] The invention relates to the technical field of tunnels, in particular to a high-efficiency spot welding fixture for steel pipe sheets. Background technique [0002] When excavating large-diameter tunnels, due to geological conditions and tunnel reliability requirements, steel pipe sheets are used for full-face support; Figure 1-3 As shown, the steel pipe sheet 1 includes a frame body; the frame body is composed of two side plates 11 and two end plates 12; the upper end of the frame body 1 is provided with a cover plate 13; the frame body 1 is provided with several transverse partitions 16 and longitudinal partitions 15; the cross-sections of the transverse partitions 16 and the longitudinal partitions 15 are all in an inverted T-shape; at present, in the production process of steel pipe sheets, most of them adopt the method of manual tailor welding, which is not only time-consuming and laborious, The work efficiency is low, and there is the problem o...

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Problems solved by technology

[0002] When excavating large-diameter tunnels, due to geological conditions and tunnel reliability requirements, steel pipe sheets are used for full-face support; Figure 1-3 As shown, the steel pipe sheet 1 includes a frame body; the frame body is composed of two side plates 11 and two end plates 12; the upper end of the frame body 1 is provided with a cover plate 13; the frame body 1 is provided with several transverse partitions 16 and longitudinal partitions 15; the cross-sections of the transverse partitions 16 and the longitudinal partitions 15 are all in an inverted T-shape; at present, in the production process of steel pipe sheets, most of them adopt the method of manual tailor welding, which is not only time-consuming and laborious, The work efficiency is low, and there is the problem of insufficient positioning accuracy of the horizontal partition and the longitudinal partition; although there are also tailor-welded fixtures on the market, such as a large-diameter steel pipe piece tailor-weld method disclosed in the prior art 202010953513.X, although it can Reduce the difficulty of welding and improve the quality of the weld seam, but the structure is complex and the operation is cumbersome, which not only increases the manufacturing cost of tailor welding fixtures, but also reduces the efficiency of tailor welding of steel pipe pieces

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