Electromagnet attraction self-propelled steel pipe welded seam inside and outside simultaneous grinding equipment

Abstract

The invention discloses electromagnet attraction self-propelled steel pipe welded seam inside and outside simultaneous grinding equipment. The equipment comprises an upper grinding head and a lower grinding head, thus, the inside and the outside of a spiral welded seam type steel pipe or a straight welded seam type steel pipe can be subjected to welded seam grinding at the same time, and the welded seam grinding time is saved. Accordingly, the problem that the efficiency is low due to manual operation or using of an automatic special machine previously is solved, in addition, self detection of welded seams can be achieved, automatic grinding is conducted, the problem that the grinding quality is low due to the existing technology is solved, precise grinding can be conducted, and the grinding quality is improved. A mobile wheel is made of super-elastic material polyurethane, the mobile wheel makes contact with the spiral welded seam type steel pipe, thus, the contact area can be increased, and stable driving force is provided for the mechanism. An attraction crawling device is connected with the structure for fixing the mobile wheel through an expansion sleeve, and through expansion connection of the expansion sleeve, the size of the equipment can be adjusted according to different pipe diameters.

Description

technical field [0001] The invention relates to the field of grinding equipment, in particular to an electromagnet adsorption self-propelled equipment for repairing inside and outside of steel pipe welds. Background technique [0002] The West-to-East Gas Transmission Project is a landmark project for the development of the western region. The project is a gas transmission project that transports natural gas from the Tarim and Changqing gas fields to East China through gas transmission pipelines. The gas transmission pipelines used in this project are mainly spiral welded pipes. To ensure the quality of the project, strict requirements are put forward for the butt weld reinforcement at the end of the gas pipeline (spiral welded steel pipe). Both the APISPEC5L standard and the GBT9711.1-1997 standard clearly stipulate that the internal and external weld reinforcements within the length range of at least 150mm from the two ends of the steel pipe to the pipe end should be remov...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an electromagnet adsorption self-propelled steel pipe welding seam internal and external repairing equipment, which mainly solves the problems of the prior art grinding equipment that the adsorption is not firm, the inside and outside of the pipe wall cannot be repaired, and the grinding efficiency is low. A machine with multiple functions can be realized

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