Automatic crawling grinding device for outer wall of circular pipe

Abstract

The invention provides an automatic crawling grinding device for the outer wall of a circular pipe, and belongs to the technical field of descaling of relief pipelines. The automatic crawling grindingdevice comprises a shell, a main driving module, a driving base, grinding modules and a crawling module, and the to-be-ground pipeline penetrates through the driving base and the shell in the axis direction; the main driving module, the crawling module and supporting wheels are installed on the outer end face of the driving base, the grinding modules are installed on the inner wall of a right shell body and are close to one side of a left shell body, and the crawling module drives a grinding device to do linear motion along the outer wall of the pipeline; and the main driving module drives the shell to drive the grinding modules to rotate in the circumferential direction of the pipeline through gear transmission, and transmission gear rings drive grinding pieces installed on the grindingmodules to rotate in the radial direction of the pipeline through gear transmission. The device is wide in application range, dismounting, mounting and grinding work of the grinding machine can be completed through one-man operation, a detection device is arranged on the outer end face of the shell, detection of the pipe wall thickness, cracks and the corrosion condition is achieved while the pipeline is ground, and one machine has multiple purposes.

Description

technical field [0001] The invention belongs to the technical field of descaling of circular pipes, relates to the technical field of descaling of discharge pipelines, in particular to an automatic crawling and grinding device for the outer wall of a circular pipe. Background technique [0002] As a part of the oil drilling well control device, blowout pipeline plays a vital role in it. Due to the fluid erosion, electrochemical corrosion, chemical corrosion and other effects of the fluid medium in the pipe, the discharge pipeline will gradually have defects such as pipe wall thinning, corrosion, cracks, etc. Once leakage occurs and fails, it will cause serious safety accidents. Therefore, it is necessary to carry out regular non-destructive testing on the return discharge pipeline to ensure the quality and operation safety of the pipeline. [0003] At present, the commonly used detection method for straight blowout pipelines is the magnetic flux leakage detection technology...

AI Technical Summary

Problems solved by technology

Under the high-speed rotation of the polishing wheel, the rust and paint on the outer circle of the pipeline are cleaned up through the contact between the workpiece and the rotating grinding piece. This manual sanding method has a high safety risk, and improper operation of the worker can easily cause the hand to be in contact with the polishing wheel. wheel contact, resulting in personal injury

The traditional grinding method has low efficiency and serious pollution. Manual grinding has a large workload and high labor intensity. A large amount of dust and serious noise will be generated during the grinding process, which will affect the health of workers.

Moreover, the grinding quality is poor, and it is difficult for workers to grasp the force angle between the hand-held grinding machine and the pipe string, which affects the sanding quality and the passability of the testing equipment

[0005] Moreover, there are flange connections at both ends of the existing blowout pipeline. Generally, the existing grinding device uses the pipeline body to rotate for grinding. Although this grinding device can remove the attachments of the pipeline better, there is no protection for the rotation of the pipeline body. , easy to cause mechanical damage

Therefore, this grinding device is only suitable for places where the outer wall of the pipeline does not need to be touched by personnel

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