A lower support frame rotary welding tool

Abstract

A rotary welding tool for a lower support comprises a rotating body, a gearbox, a main frame, a motor and pulley bases. The rotating body is installed on the right side of the main frame, the gearbox is installed in the upper end of the main frame, the gearbox is located on the left side of the middle of the rotating body, the motor is installed on the left side of the gearbox, the motor is connected with a rotating shaft in the gearbox, and the pulley bases are symmetrically installed on the edge of the rotating body. The rotary welding tool for the lower support has the advantages of being simple in structure and convenient to operate and saving occupied space of a site and has high reliability and stability.

Description

technical field [0001] The invention relates to a welding tool, in particular to a rotary welding tool for a lower support frame. Background technique [0002] The lower support frame of the crane is large in size, and it is quite inconvenient to weld. The general welding method is to lift and turn over, and weld the legs from different directions. For example, the common method in the workshop is to hoist the lower support frame to the On the driving, turn the lower support frame 90 degrees for welding by driving. In the crane industry, a simple method is also adopted. The inner hole at the upper end of the lower support frame is supported by three struts, the main chord at the lower end is also supported by three struts, and a seamless pipe is inserted in the middle to rest on the supports at both ends. , weld the legs of the lower support frame by manual flipping. The problems in the above method are: difficult lifting and turning over, high labor intensity, in addition...

AI Technical Summary

Problems solved by technology

The problems in the above method are: difficult lifting and turning over, high labor intensity, in addition, due to its own structural characteristics, the center part of the lower support frame of the crane is forward, unstable during hoisting, and manual alignment is required when loading into the tooling, which is troublesome

[0003] CN104308443A discloses a welding positioner for the lower support of a tower crane, including a base frame, a bracket I fixed on one side of the base frame, a parallel bracket I fixed on the other side of the base frame, a disc I, a Disk II, motor, the invention fixes the lower support of the crane on the positioner, the upper end of the lower support is positioned through the inner hole, clamps it with a pressure plate, and fixes it on the disc I, and the main chord at the lower end of the lower support passes through the pin shaft And the nut is locked on the disc Ⅱ, and the drive part of the positioner is driven by the motor to drive the disc Ⅰ to realize the flip displacement of the lower support, which is convenient to adjust the flip welding position of the lower support, reduces the trouble of hoisting and flipping, and saves the lower support The welding time of the outriggers has certain reliability and stability, but the structure of the invention is relatively complicated, and the invention occupies a large space, has high requirements on the site, is not very convenient to operate, and the stability and reliability have yet to be determined. improve

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