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Large-diameter steel pipe piece tailor-welding method

A large-diameter, steel pipe technology, applied in the field of large-diameter steel pipe piece tailor welding, can solve the problems of high welding difficulty, easy to produce vertical welds, and affect the quality of welds, so as to improve processing stability and efficiency, and improve tailor welding The effect of processing stability

Active Publication Date: 2020-12-11
SINOHYDRO JIAJIANG HYDRAULIC MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The installation and splicing joints of large-section round steel pipes disclosed in this patent document are not suitable for tailor-welding of large-diameter steel pipe pieces. The welding difficulty is high, and vertical welds are likely to occur during the tailor-welding of the segments, which affects the quality of the weld seam, and the splicing operation is complicated.

Method used

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  • Large-diameter steel pipe piece tailor-welding method
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  • Large-diameter steel pipe piece tailor-welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see Figure 1-Figure 5 , a large-diameter steel pipe sheet tailor welding method, comprising the following steps:

[0042] a. Use the inner web compactor 5 to press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe sheet tailor welding tool;

[0043] b. The longitudinal partition is fixed by the longitudinal partition positioning member 4, and the longitudinal partition is welded on the inner web, and multiple longitudinal partitions are fixed in sequence;

[0044] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete Fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0045] d. According to the heig...

Embodiment 2

[0048] see Figure 1-Figure 5 , a large-diameter steel pipe sheet tailor welding method, comprising the following steps:

[0049] a. Use the inner web compactor 5 to press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe sheet tailor welding tool;

[0050] b. The longitudinal partition is fixed by the longitudinal partition positioning member 4, and the longitudinal partition is welded on the inner web, and multiple longitudinal partitions are fixed in turn;

[0051] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete Fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0052] d. According to the height a...

Embodiment 3

[0056] see Figure 1-Figure 5 , a large-diameter steel pipe sheet tailor welding method, comprising the following steps:

[0057] a. Use the inner web compactor 5 to press and fit the inner web on the arched surface of the base 1 of the large-diameter steel pipe sheet tailor welding tool;

[0058] b. The longitudinal partition is fixed by the longitudinal partition positioning member 4, and the longitudinal partition is welded on the inner web, and multiple longitudinal partitions are fixed in sequence;

[0059] c. Hoist the horizontal partition, insert the horizontal partition between the two longitudinal partitions, pull the positioning rod 14 to snap the positioning bolt 15 into the fixing slot 18 of the positioning groove 16, and after the positioning bolts 15 on both sides are fixed in place, complete Fixing of the transverse partition, and then welding the transverse partition with the inner web and the adjacent longitudinal partition;

[0060] d. According to the heig...

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Abstract

The invention discloses a large-diameter steel pipe piece tailor-welding method, and belongs to the technical field of tunnel supporting equipment machining. The large-diameter steel pipe piece tailor-welding method is characterized by comprising the following steps that a, an inner web is pressed and attached to the base arch face of a large-diameter steel pipe piece tailor-welding tool; b, longitudinal partition plates are fixed and welded to the inner web; c, a transverse partition plate is embedded between the two longitudinal partition plates, positioning rods are pulled to clamp positioning bolts into fixing clamping grooves of positioning grooves, and after the positioning bolts on the two sides are fixed in place, the transverse partition plate, the inner web and the adjacent longitudinal partition plates are welded together; and d, steel seal marks are printed at the lower ends of the fixing clamping grooves, and finally an outer web is hoisted and pressed with the transversepartition plate and the longitudinal partition plates to complete welding. According to the large-diameter steel pipe piece tailor-welding method, vertical welding joints of all the longitudinal partition plates are converted into flat welding joints in a horizontal splicing manner, the vertical welding joints existing during pipe piece tailor-welding can be greatly reduced, the welding difficultyis lowered, the welding joint quality is improved, and the whole tailor-welding operation is simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of tunnel support equipment processing, in particular to a large-diameter steel pipe sheet tailor welding method. 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. The steel pipe sheet adopts double-steel plate shear wall structure, with horizontal partitions and longitudinal partitions inside. According to the different installation positions of the segments, the horizontal partitions have different elevations relative to the bottom of the single segment. There are a large number of vertical welds in the traditional vertical joining method, which makes welding difficult. And there is also the problem of insufficient positioning accuracy of the transverse partition and the longitudinal partition. The relative elevations of the transverse partitions of different steel pipe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18E21D11/24B23K37/02B23K37/04
CPCE21D11/18E21D11/24E21D11/183B23K37/02B23K37/04
Inventor 赵明周建平周兵代新启李健徐高峰李友明
Owner SINOHYDRO JIAJIANG HYDRAULIC MACHINERY