A grinding device and grinding method for grinding the inner wall of a pipeline

Abstract

The invention discloses a grinding device used for grinding inner walls of pipelines. The grinding device comprises a mechanical arm and a support frame used for installing the mechanical arm; the mechanical arm comprises a master control motor and a telescopic link; one end of the telescopic link is fixedly connected onto the output shaft of the master control motor, and the other end of the telescopic link is connected with a grinding motor; the axis of the telescopic link is perpendicular to that of the master control motor, and the axis of the grinding motor is parallel with that of the master control motor; the output shaft of the grinding motor is connected with a grinding wheel in manner of tight fit; the support frame also comprises a mounting seat used for mounting the master control motor of the mechanical arm, and at least two connecting joints located in the same plane are distributed at equal spacing around the outer side face of the mounting seat; head ends of the at least two connecting joints are fixedly connected onto the mounting seat, and the tail end of each connecting joint is coaxially connected with a support rod adjustable in length; and the tail end of eachsupport rod is fixedly connected with an extrusion head. The invention also discloses a grinding method for round pipelines and a grinding method for square pipelines. The grinding device and the grinding method disclosed by the invention are capable of reducing labor strength and increasing grinding efficiency, and can adapt to pipelines different in aperture size.

Description

technical field [0001] The invention relates to the technical field of pipeline grinding, in particular to a grinding device and a grinding method for grinding the inner wall of a pipeline. Background technique [0002] Grinding is a kind of surface modification technology. It generally refers to a processing method that uses rough objects or sandpaper with relatively high hardness particles to rub and change the physical properties of the material surface. The main purpose is to obtain a specific surface roughness or flatness. . Especially after the welding of large-scale pipelines, it is necessary to grind the internal welding parts of the pipelines to keep the inner walls flat. In the prior art, manual grinding is generally used for grinding the inner wall of the pipeline. Workers hold the grinder to grind inside the pipeline, and it is difficult to turn around due to the narrow space. The grinding process consumes a lot of physical strength, and the work intensity of th...

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Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a grinding device for grinding the inner wall of a pipeline, which solves the technical problems of high labor intensity and low efficiency of manual grinding in the prior art, can reduce labor intensity, and improve grinding efficiency , can adapt to pipes of different diameters

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