Variable diameter average torque flux roller frame

Abstract

The invention relates to a variable-diameter even-torque weld-aid idler wheel frame which comprises a base and an idler wheel swing frame which is used for driving a seam workpiece to be welded. The idler wheel swing frame comprises a driving idler wheel swing frame and at least one auxiliary idler wheel swing frame, wherein the driving idler wheel swing frame is arranged at the position with the largest diameter of the seam workpiece to be welded. The driving idler wheel swing frame and the auxiliary idler wheel swing frame are both provided with driven wheels, driving wheels, power devices and electrical control devices, wherein the driving wheels drive the driven wheels, the power devices drive the driving wheels to operate, the electrical control devices drive the power devices to operate, and the rotating speed of the driving wheel of the auxiliary idler wheel swing frame is less than or equal to the rotating speed of the driving wheel of the driving idler wheel swing frame. According to the variable-diameter even-torque weld-aid idler wheel frame, by means of the adoption of the driving idler wheel swing frame arranged at the position with the largest diameter of the workpiece, the auxiliary idler wheel swing frame is arranged at the other portion of the workpiece, the driving idler wheel swing frame limits the rotating speed of the driving wheel of the auxiliary idler wheel swing frame so that distribution uniformity of rotating torque loads is achieved, the phenomenon that the linear speed of the variable-diameter workpiece is not uniform is avoided, service life of the idler wheel frame is prolonged, and working stability of the idler wheel frame is improved.

Description

technical field [0001] The invention relates to a roller frame for welding seam of a large cylindrical body, in particular to a variable-diameter average moment torque welding roller frame. Background technique [0002] With economic development, large welded cylinders are widely used in petroleum, shipbuilding, construction, mining, public facilities, energy transportation, boilers and other industries, such as: bridge columns, oil pipelines, urban water supply and drainage pipelines, boiler cylinders, oil tanks Car body, etc. Large-scale cylinder production enterprises still use submerged arc welding trolleys or simple fixed frames for welding, and only a single ring seam can be welded. When the size of the cylinder changes, it is difficult to adjust the welding position with the fixed frame, which is time-consuming and laborious. The quality is unstable, the work efficiency is low, the labor intensity is high, and the production site environment is poor. [0003] At pre...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of uneven linear velocity and uneven load moment in the rotation process of large workpieces with variable diameters in the prior art, and the purpose is to provide a time-saving, labor-saving and stable working variable-diameter average torque welding roller frame , used to assist in welding the circular seams and longitudinal seams of large cylinders, which greatly improves work efficiency, reduces the labor intensity of workers, and solves the shortcomings of existing technologies

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