Steel pipeline arc plate fishing device

Abstract

A steel pipeline arc plate fishing device comprises a flexible connection assembly and an arc plate adsorption assembly, and is characterized in that the flexible connection assembly comprises an upper sleeve, a lower sleeve, two fixed pulleys and a plurality of limiting wheels; the upper sleeve is fixedly connected with the lower sleeve; fixed pulley mounting shafts are fixedly mounted on the lower sleeve; the two fixed pulleys are mounted on the two fixed pulley mounting shafts correspondingly; steel wire ropes are arranged on the fixed pulleys; an upper connecting plate is fixedly arrangedon the lower end face of the lower sleeve; the arc plate adsorption assembly comprises a lower connecting plate, two strong magnets and four hoisting rings; the hoisting rings are fixedly arranged onthe upper end face of the lower connecting plate; the two ends of the steel wire ropes are fixedly arranged on the corresponding hoisting rings; the two ends of the lower end face of the lower connecting plate are each fixedly provided with a strong magnet box; and the two strong magnets are arranged in the two strong magnet boxes correspondingly. The steel pipeline arc plate fishing device has the advantages of being high in magnetic field strength, small in size, high in adsorbability. The magnets are protected from being shattered, and the risk that electric sparks are liable to be generated due to direct contact of the arc plates and the magnets is avoided.

Description

technical field [0001] The invention belongs to the field of pipeline maintenance equipment, and particularly relates to a long-distance steel pipeline, which is urgently fished out after the arc plate cut by the hole barrel knife accidentally falls into the pipeline during the opening and sealing of the long-distance steel pipeline. The resulting device can be widely used in maintenance and repair sites of long-distance steel pipelines at home and abroad. Background technique [0002] In steel pipeline maintenance, emergency repair or pipeline transformation, pipeline drilling is an essential work. During on-site drilling construction operations, due to improper operation of the equipment itself or the construction personnel, the center drill breaks or the arc plate extraction device fails, so that the steel pipe arc plate cut by the barrel knife cannot be lifted out with the barrel knife and falls to the Inside the pipeline, it will affect the subsequent work of plugging ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a steel pipeline arc plate fishing device, which solves the problem that the center drill breaks or the arc plate extraction device fails due to the equipment itself or the improper operation of the construction personnel during the on-site drilling construction operation, resulting in the failure of the barrel cutter. The cut steel pipe arc plate cannot be lifted together with the barrel knife, and falls into the inside of the pipeline, which affects the subsequent work of plugging and ball testing.

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