Drilling, milling and cutting device in underwater pipe and using method of drilling, milling and cutting device

Abstract

The invention provides an underwater in-pipe drilling, milling and cutting device and a using method thereof.The device comprises a cutting device, a rotating device and a fixing device, and the fixing device is composed of a supporting hydraulic cylinder, a supporting short arm, an upper flange, a lower flange and a main structure steel pipe; the slewing device is composed of an outer gear slewing bearing, a driving gear meshed with the outer gear slewing bearing, a speed reducer, a hydraulic motor and a circular working platform. The cutting device is provided with two sets of identical mechanisms and is composed of a driving motor, a vertical milling head, a milling cutter, a feeding hydraulic cylinder and a sliding rail. And the two sets of cutting devices are oppositely mounted on the rotary working platform at an angle of 180 degrees. The lower flange of the fixing device is connected with the outer ring of the slewing bearing; the cutting device is connected with the inner ring of the slewing bearing through the working platform; a slewing driving motor of the slewing device is connected with a speed reducer and fixed on the slewing working platform, and a driving gear is connected with the speed reducer and meshed with a slewing bearing outer ring gear. The invention has the characteristics of simple structure, independence, flexibility, high efficiency, strong adaptability and the like.

Description

technical field [0001] The invention relates to the technical field of underwater internal cutting of steel piles, in particular, to an underwater pipe internal drilling, milling and cutting device and a method of using the same. Background technique [0002] In the construction of marine engineering and cofferdam engineering, it is often necessary to cut steel pipes underwater. At present, the cutting technologies in this field include high-pressure water cutting, diamond wire saw cutting, underwater electric oxygen arc cutting, beveling machine cutting, and cutting with the latest technology. laser cutting. Both high-pressure water cutting and underwater laser cutting equipment are too expensive, and generally small and medium-sized enterprises cannot afford the high equipment costs; underwater electric oxygen arc cutting is destructive cutting, only guaranteed to be cut and must be operated by divers; beveling machine cutting is a circular rotation The disadvantage of in...

AI Technical Summary

Problems solved by technology

High-pressure water cutting and underwater laser cutting equipment are too expensive, and ordinary small and medium-sized enterprises cannot afford high equipment costs; underwater electric oxygen arc cutting is destructive cutting, only guarantees cutting and must be operated by divers; beveling machine cutting belongs to circular rotation The disadvantage of internal cutting is that when cutting vertical steel piles, it is easy to clamp the knife and cannot be used to prevent backing; diamond wire saw cutting is external cutting, and equipment installation cannot be performed when there is an interference structure outside the pile

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