Large pipeline inner wall welding tool

Abstract

The invention discloses a large pipeline inner wall welding tool. The large pipeline inner wall welding tool comprises a rotating shaft, two vertical supporting rods, two transverse supporting rods and a supporting arm, wherein a fixed disc and two installing bases are rotationally connected to the rotating shaft in sequence, a fixed sleeve is fixed to one end of the rotating shaft, and the otherend of the rotating shaft penetrates through the fixed disc to be fixedly provided with a curved bar; and the vertical supporting rods are fixed to the two ends of one installing base separately, thetransverse supporting rods are fixed to the two ends of the other installing base separately, the bottom of the supporting arm is fixed to the fixed sleeve, and a welding rod clamping base is installed at the top end of the supporting arm. According to the large pipeline inner wall welding tool, the rotating shaft can be fixed at the axis of a pipeline through the transverse supporting rods and the vertical supporting rods, the transverse supporting rods and the vertical supporting rods are each of a telescopic structure and can adapt to pipelines which are different in size, and the practicability of the device is improved; and manual welding operation is simulated, the welding effect is guaranteed, welding rods are attached to the inner wall of the pipeline all the time, and therefore continuous welding can be conducted, and the welding efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing devices, and in particular relates to a welding tool for the inner wall of a large-scale pipeline. Background technique [0002] A pipeline is a device used to transport gas, liquid or fluid with solid particles connected by pipes, pipe connectors and valves. Usually, after the fluid is pressurized by blowers, compressors, pumps and boilers, it flows from the high-pressure part of the pipeline to the low-pressure part, and it can also be transported by the pressure or gravity of the fluid itself. Pipes are widely used, mainly in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. [0003] In the process of pipeline construction, the pipeline needs to be welded. The existing welding methods mostly use welding from the external interface, resulting in gaps i...

AI Technical Summary

Problems solved by technology

[0003] In the process of pipeline construction, the pipeline needs to be welded. The existing welding methods mostly use welding from the external interface, resulting in gaps in the inner wall of the pipe end joints and unreliable welding, especially in large pipelines. Guarantee welding quality

Therefore, it is necessary to weld the internal joints of the pipeline. The existing pipeline welding is mostly manual welding, which not only requires a large workload, but also requires workers to enter the interior of the pipeline. Due to the limited space in the pipeline, the operation is inconvenient, and it is difficult to ensure the welding quality and welding efficiency.

Images