Conduit fishing device and fishing method

Abstract

The invention discloses a conduit fishing device and fishing method. The conduit fishing device comprises a base and at least four fishing heads, a hoisting head is arranged on the center of the top face of the base, the fishing heads are uniformly arranged around the base, first support arms are uniformly arranged on the side face of the outside circumference of the base, second support arms arefixedly connected to the top faces of the fishing heads through fixing rods, the first support arms are movably connected with the second support arms through telescopic mechanisms and horizontal support rods, and the horizontal support rods are uniformly distributed around the telescopic mechanisms. The fishing method comprises the steps of base machining, fishing head machining, machining of thefirst support arms and the second support arms machining, piece installation and conduit fishing. According to the conduit fishing device and fishing method, the structure is simple, the practicability is high, the spacing between the fishing heads and the base can be adjusted according to the bores of different conduits, fishing of the conduits with different bores is achieved, the usage range and the flexibility of the conduit fishing device are expanded and improved, and meanwhile, manufacturing is convenient, the operation is simple and convenient, and the success rate is extremely high.

Description

technical field [0001] The invention relates to a catheter fishing device and a fishing method. Background technique [0002] During the concrete pouring process of the bored pile body, sometimes the conduit will fall into the pile hole due to old wear of the threaded fastener or careless construction, etc. Generally, steel wire rope or steel bar is used to remove the casing for salvage conduit. The common methods of salvaging catheters are: noose method, hook method, etc.; these methods are unsatisfactory in the process of salvaging the fallen catheters, because the outer edge of the threaded catheter mouth is very small, it is difficult to work in the process, and the luck factor is too large. The specific gravity of the mud is too large, and the common method cannot meet the requirements due to its own weight, and it is difficult to touch the conduit opening during the lowering process. Contents of the invention [0003] The purpose of the present invention is to provi...

AI Technical Summary

Problems solved by technology

The common methods of salvaging catheters are: noose method, hook method, etc.; these methods are unsatisfactory in the process of salvaging the fallen catheters, because the outer edge of the threaded catheter mouth is very small, it is difficult to work in the process, and the luck factor is too large. The specific gravity of the mud is too large, and the common method cannot meet the requirements due to its own weight, and it is difficult to touch the mouth of the conduit during the lowering process

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