Spin welding device for preventing middle part of tower crane base section from drooping during welding

Abstract

The invention discloses a rotary welding device for preventing the middle part of a tower crane base section from drooping during welding, which comprises a base section, and further comprises a driving mechanism, a left support, a middle support, a right support and a rotary frame, the left support and the right support are fixedly arranged on the left side and the right side respectively, the driving mechanism is fixedly arranged on the left support, the middle support comprises a supporting seat and a supporting rotary drum, and the supporting seat is fixedly arranged on the supporting rotary drum. The supporting seat is fixedly arranged at the middle position between the left support and the right support, a plurality of rollers capable of rotating freely are fixedly arranged on the supporting seat, the supporting rotating cylinder is placed on the rollers, the outer circle of the supporting rotating cylinder is in rolling contact with the rollers, the rotating frame penetrates through the supporting rotating cylinder and is fixed to the supporting rotating cylinder in the radial direction, and the left end of the rotating frame is fixedly connected with the driving mechanism. And the right end is rotationally connected with the right support. The motor is used for driving the base joint to rotate, supporting force can be applied to the middle of the base joint when the base joint is static and rotates, the middle of the base joint is prevented from drooping and deforming, and it is ensured that the product quality reaches the expected quality standard.

Description

technical field [0001] The invention relates to the technical field of tower crane processing, in particular to a rotary welding device for preventing the middle part from sagging when the base joint of the tower crane is welded. Background technique [0002] When the existing tower crane base section is assembled and welded as a whole, two methods are usually used. One is to fix the base section on the welding tooling platform, and the welder performs welding around the base section. This method is inconvenient for welding, especially It is difficult to weld in the dead angle of welding, and the welding quality is not guaranteed; another method is to fix the two ends of the base joint on the rotating table of the welding tool, and the middle is suspended, and the welder can rotate the base joint when encountering a welding dead angle during welding Turn over to facilitate welding, but because the length of the base section is 7.5 meters, the middle part of the base section ...

AI Technical Summary

Problems solved by technology

[0002] When the existing tower crane base section is assembled and welded as a whole, two methods are usually used. One is to fix the base section on the welding tooling platform, and the welder performs welding around the base section. This method is inconvenient for welding, especially It is difficult to weld in the dead angle of welding, and the welding quality is not guaranteed; another method is to fix the two ends of the base joint on the rotating table of the welding tool, and the middle is suspended, and the welder can rotate the base joint when encountering a welding dead angle during welding Turn over to facilitate welding, but because the length of the base section is 7.5 meters, the middle part of the base section is prone to drooping deformation during welding, so that the product cannot meet the expected quality standards. If the middle part of the base section is supported, the base section will turn over every time It is necessary to remove the middle support in front of the face, and then support it again after turning over. It is very troublesome and the welding efficiency is low.

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