Automatic welding fixture for longitudinal joint of spherical shell in safety injection tank

Abstract

The invention discloses an automatic welding fixture for a longitudinal joint of a spherical shell in a safety injection tank. The automatic welding fixture comprises a cylinder for containing the spherical shell in the safety injection tank. Two through holes are formed in the cylinder wall of the cylinder. The connecting line of circle centers of the two through holes intersects with and is perpendicular to the central axis of the cylinder, a welding hole allowing a welding head of a welding machine to stretch into the cylinder is formed in the cylinder wall of the cylinder, the plane formed by the center of the welding hole and the circle centers of the two through holes is perpendicular to the central axis of the cylinder, rotary shafts are arranged in the two through holes respectively, and discs connected with the spherical shell in the safety injection tank are arranged on the rotary shafts respectively. The automatic welding fixture has the advantages that the spherical shell can rotate, the automatic welding requirements can be met, and welding firmness and working efficiency can be improved.

Description

Technical field [0001] The invention relates to an automatic welding tool for the longitudinal seam of a spherical shell in a safety injection box. Background technique [0002] An injection box is a common equipment in the boiler industry. Due to its large size, the diameter is generally more than 3 meters. When welding the spherical shell, manual welding is usually used. When welding, workers need to stand It is more dangerous to weld the spherical shell on a high platform, and in the operation, the welding level of the workers is very high. Once the welding is not good, it is a great loss to the enterprise. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide an automatic welding tool for the longitudinal seam of the spherical shell in the safety injection box suitable for automatic welding. [0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automatic weldi...

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Problems solved by technology

[0002] The safety injection box is a common equipment in the boiler industry. Due to its large size, the diameter is generally more than 3 meters. When welding the spherical shell, manual welding is usually used. When welding, workers need to stand very far It is dangerous to weld the spherical shell on a high platform, and in terms of operation, the welding level of the workers is very high. Once the welding is not good, it will be a great loss to the enterprise.

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