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Equipment for automatically welding longitudinal concave seam of large elbow

A welding equipment and automatic seam technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve problems such as undiscovered, automatic welding difficulties, etc., to improve welding quality, good welding quality, and ensure work safety. Effect

Inactive Publication Date: 2007-10-03
李文秀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two are different welds. The longitudinal concave weld of the large elbow cannot rotate around the axis of the workpiece itself to form a circular motion trajectory like circular seam welding, which brings great difficulties to automatic welding.
There is no equipment for automatic welding of longitudinal concave seams of large elbows

Method used

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  • Equipment for automatically welding longitudinal concave seam of large elbow
  • Equipment for automatically welding longitudinal concave seam of large elbow
  • Equipment for automatically welding longitudinal concave seam of large elbow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] As shown in Figure 16, the automatic welding equipment for the longitudinal concave seam of a large elbow includes a power unit 1, a large elbow positioning device 2, a welding head positioning device 3 and a brake device 4, wherein

[0052] The power unit 1 includes a motor, a reducer, transmission parts, a main shaft 13 and a flat plate 14 fixedly connected to the main shaft. The end of the main shaft is wound with a wire rope 41 fed by the brake device. The flat plate 14 is fixedly connected to the large elbow positioning device 2. After the power is turned on, the reducer is driven to rotate, the reducer drives the main shaft to rotate through the transmission part, and the main shaft drives the flat plate and the large elbow positioning device to rotate around the main shaft. Transmission components can be chains, belts or gear drives.

[0053] 20 circles of R-shaped threads are machined on the axial 400mm width of the outer circumference of the main shaft 13 ends....

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Abstract

An automatic welder for the longitudinal concave seam of a great elbow is composed of a power unit, a great elbow locating unit with several fastening plats fixed on smooth plate and having centering function, a welding head locating unit with synchronizing mechanism and supporting frame, and a brake unit.

Description

technical field [0001] The invention relates to an automatic welding equipment, in particular to an automatic welding equipment for the longitudinal concave seam of a large diameter elbow. Background technique [0002] At present, the welding of large elbow welds in my country adopts manual welding. The so-called large elbow is a large-diameter high-pressure steel pipe connector used in high-pressure pipelines such as oil transportation, gas transportation, and coal slurry transportation. The pipe diameter is above 630mm. These pipes usually withstand high pressure above 100MPa. As shown in Figure 1, the large elbow is formed by molding and welded by two semi-elbows with upper and lower symmetry. There are four welds, which are longitudinal arch welds AA' arc, CC' arc and longitudinal concave weld. Seam BB' arc, DD' arc, these four longitudinal arc welds are four equal-angle arcs of four concentric circles, the center of which is O, and the elbow is usually named after the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00B23K37/04B23K37/02B23K101/06
Inventor 李文秀
Owner 李文秀
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