A welding device for the inner wall of a large-diameter circular pipe

Abstract

The invention relates to an inner wall welding device for a large diameter round tube. The device comprises a bottom plate. Two roller mechanisms are arranged at the left end of the bottom plate and alifting air cylinder is fixed to the right end of the bottom plate; a rodless air cylinder is fixed to the output end of the lifting air cylinder; a mounting rack is connected to the driving end of the rodless air cylinder; a wall plate is fixed to the mounting rack; four moving bases are uniformly distributed on the left end surface of the wall plate along the circumferential direction; the fourmoving bases are slidably connected to the wall plate along the circumferential lines formed thereby radially; welding guns are connected to the moving bases; a supporting plate is arranged on the right side of the wall plate; a servo motor and a guide bar are fixed to the supporting plate; a driving shaft of the servo motor is connected to a lead screw; a cylinder is mounted on the lead screw and the guide bar; wedged blocks are arranged in positions, corresponding to the moving bases, on the cylinder; and connecting blocks in sliding fit to the wedged blocks are arranged on the moving bases. According to the device provided by the invention, the four welding guns are used to operate simultaneously, so that the welding time is shortened greatly, and the work efficiency is improved; and the device can be suitable for welding round tubes of different diameters, so that the adaptability of the whole welding device is improved.

Description

technical field [0001] The invention relates to the technical field of welding machinery, in particular to a welding device for the inner wall of a large-diameter circular pipe. Background technique [0002] Round pipe is one of the common basic workpieces at present. When processing large-diameter round pipes, whether it is to assemble multiple round pipes or to repair the internal coating, welding equipment is required. However, the current welding equipment is mostly a single welding torch head, and it needs to complete a complete circle to process the inner wall of the round pipe. When the diameter of the round pipe is larger, the time will increase and the construction period will be extended; The diameters of the pipes are different, and the traditional welding equipment is difficult to adapt to the welding requirements of different diameters of round pipes. The range of use is narrow and the compatibility is poor, which is not conducive to the inner wall welding of ro...

AI Technical Summary

Problems solved by technology

However, the current welding equipment is mostly a single welding torch head, and it needs to complete a complete circle to process the inner wall of the round pipe. When the diameter of the round pipe is larger, the time will increase and the construction period will be extended; The diameters of the pipes are different, and the traditional welding equipment is difficult to adapt to the welding requirements of different diameter round pipes. The use range is narrow and the compatibility is poor, which is not conducive to the inner wall welding of round pipes.

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