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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: 2009-07-01
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] Such as Figure 16 As shown, 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.

[0052] The power unit 1 includes a motor, a reducer, a transmission component, 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 a brake device. The flat plate 14 is fixedly connected to the large elbow positioning device 2 and the motor is connected. After the power is turned on, the reducer is driven to rotate, the reducer drives the main shaft to rotate through the transmission component, and the main shaft drives the flat plate and the large elbow positioning device to rotate around the main shaft. The transmission component can be a chain, belt or gear transmission.

[0053] 20 rounds of R-shaped threads are machined on the outer circumference of the end of...

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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 device, in particular to an automatic welding device for longitudinal concave seams of large-caliber elbows. Background technique [0002] At present, the welding of large elbows in our country adopts manual welding. The big elbow is a large-diameter high-pressure steel pipe connection used in high-pressure pipelines such as oil, gas, coal slurry, etc. The pipe diameter is more than 630mm, and these pipelines usually bear a high pressure of more than 100MPa. Such as figure 1 As shown, the large elbow is formed by compression molding and welding of two semi-elbows that are symmetrical up and down. There are four welds, which are longitudinal arc welds AA' arc, CC' arc and longitudinal concave weld BB' Arc, DD' arc, these four longitudinal arc welds are four equal-angle arcs of four concentric circles, the center of which is 0, and the elbow is usually named after the angle AOA', such as the angle AOA' is 30 Degr...

Claims

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Application Information

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