JPS582106B2 - Hull dismantling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dismantling ship hulls, particularly large ship hulls.

A large amount of high-grade metal material is used in the hull of the ship, and when the ship is scrapped, it is disassembled and small pieces of metal material (bars,
It is commercialized as plate material, shaped steel) or sold as scrap material.

The conventional method for dismantling a ship's hull is to cut the above-the-water part of the ship's hull into large chunks (generally referred to as large chunks), and then use an offshore crane or an overhanging crane to remove these chunks. They are then hoisted up, lined up on land, and cut into small pieces (generally called small pieces).

Next, after the parts above the water surface have been dismantled, the parts below the water surface leak into shallow water, and after waiting for the tide, the hull that has appeared above the water surface is dismantled in large and then small pieces in the same manner as described above. Do this.

In the case of the conventional ship dismantling method, it is necessary to have a place to moor the ship, shallow water, a quay to bring the dismantled products ashore, a large space to break up the dismantled products, and ancillary equipment, making it possible to carry out dismantling work anywhere. It's not something that can be done.

Another problem is that because the two stages of demolition, large and small, are carried out in separate locations, transportation using a crane is necessary, and the man-hours required for this amount to 30% of the total demolition work. .

Furthermore, since the demolition work area is divided into multiple locations, there is a problem in that a large number of workers are required.

Due to these circumstances, conventional construction methods were severely restricted in terms of demolition sites and required a large number of personnel, making the resulting scraps and ready-to-use metal materials expensive.

The present invention was obtained in order to eliminate the drawbacks of the conventional dismantling methods, and is a method for disassembling a ship's hull floated on the sea until it becomes scrap or products such as plates or bars at that location. It provides:

In other words, the present invention aims to provide a method for efficiently dismantling ship hulls without being subject to locational restrictions such as the use of port facilities, unlike conventional dismantling methods.

In order to achieve the above object, the present invention utilizes a cutting factory which itself has buoyancy, and a manufacturing factory which is connected to the cutting factory and which has buoyancy itself, and loads the hull to be dismantled into the cutting factory. Pulling in and dismantling it, transporting the obtained dismantled material to a manufacturing factory, where it is processed into a prescribed product, and supplying at least electricity, compressed air, and gas required by the cutting factory. This is a ship dismantling method characterized by:

Embodiments of the present invention will be described below with reference to the drawings.

The figure is a perspective view showing the state of dismantling the hull of a large ship.

1 is the hull of the ship being dismantled; the figure shows the bow and stern parts already dismantled, and the remaining middle part.

Reference numeral 2 denotes a cutting factory, which mainly consists of a barge 3 having a U-shaped portion located at the bottom of the ship and parts located on both sides of the ship, a cutting conveyor 4, and a side support device 5.

The cutting conveyor 4 has a kind of portal crane, and is moved in the longitudinal direction of the hull by a moving device 6, and also moves the frame 7 up and down.

The frame 7 is configured such that a gondola 8 can be moved vertically by an arm 9 and can be moved laterally on the frame by a traveling device 10.

Reference numeral 11 denotes a cutting machine, which is operated by a worker housed in the gondola 8, and the cut metal material pieces are transported by a hoist 12 with a magnet.

A side support device 5 and an endless winch 13 are provided on the vertical portion of the barge 3, and the side support device 5 maintains the space between the barge 3 and the ship body 1 and serves as a guide during movement.

The endless winch 13 moves the relative position between the hull 1 and the barge 3 by pulling in a wire 15 between the endless winch 13 and a pulley 14 attached to the hull 1.

Roller conveyors 16 are also provided on both sides of the barge 3, and a carrier conveyor 17 is provided in the center.

Reference numeral 18 denotes an oil-water separator and an oil tank, which separates and collects oil leaked from the hull 1.

19 is a manufacturing factory that connects the end of the cutting factory 2 and the connecting rod 20.
are connected so that they can swing freely.

In this product processing factory 19, cut products sent by a roller conveyor 16 are transferred to a conveyor 21, sorted by a rotary sorter 22, and then supplied to a large shear 23, a small shear 24, a breaker 25, and a cutting machine 26. Ru.

27 is a product storage area, 28 is a control room and an office, and 29 is a power room, and the electric power obtained in this 5, the air in the compression chamber, etc. are supplied to the cutting factory 2 through a cab tire and hoses 30.

31 is a gas cylinder room, 32 is a purge constituting the main body of the product factory, 33 is a product hopper, and 34 is a transport ship.

Next, details of the ship dismantling method of the present invention will be explained.

First, a buoyant body 35 is attached to the bow or stern of the hull to be dismantled, and this is filled with air to float the bow or stern.

Then, the cutting factory 2 is inserted into the floating part.

In this work, the hull 1 is pulled into the cutting factory 2 using the wire 15 between the pulley 14 attached to the hull 1 and the endless winch 13.

At this point, the hull 1 is assisted in movement by the carrier conveyor 17.

For cutting, a worker riding the gondola 8 adjusts the height and direction of the gondola, adjusts the direction and position of the cutting machine 11, cuts the hull 1 into small pieces, and uses a hoist 12 with a magnet to cut the hull 1 into small pieces. The materials are then placed on a conveyor 21, sorted by a rotary sorter 22, transported to various devices, and subjected to predetermined processing.

The products and scraps obtained by processing as described above are loaded onto a carrier ship 34 through a product hopper 33 and taken ashore.

In addition, the power, gas, compressed air, and electricity necessary for the cutting factory are supplied by the product manufacturing factory.

The present invention organically connects a cutting factory and a merchandising factory, dismantles the hull while dragging it into the cutting factory, and sends the resulting dismantled material to the merchandising factory, where it is manufactured or manufactured into a product. Since it is made into scrap, predetermined dismantling work can be carried out at sea.

Being able to dismantle at sea has almost no restrictions in terms of location or equipment, unlike traditional demolition methods.

Furthermore, since the cutting factory and the merchandising factory are separate, the merchandising factory can be provided with various functions, and the cutting factory can be downsized and has excellent operability.

[Brief explanation of the drawing]

The figure is a perspective view showing a state in which a ship body is dismantled according to the present invention. 1... Hull (under disassembly), 2... Cutting factory, 3... Purge, 4... Cutting transport machine, 5... Broadside support device, 6... Moving device, 7... Frame, 8... Gondola, 9... Arm, 10... Travel device, 11... Cutting machine, 12... Hoist with magnet, 13... Endless winch, 14...
...Pulley, 15...Wire, 16...Roll conveyor, 17
...Carrier conveyor, 18...Oil/water separator and oil tank, 19...Product processing factory, 20...Connecting rod, 21...Conveyor, 22...Rotary sorting machine, 23...Large shear, 24... Small shear, 25...Breaker, 26...
... Cutting machine, 27 ... Product storage area, 28 ... Control room and office, 29 ... Power room, 30 ... Cap tire, hose, 31 ... Gas cylinder room, 32 ... Purge, 33 ...
Product hopper, 34...Transportation chamber, 35...Floating body.

Claims (1)

[Claims] 1 Utilizing a cutting factory that itself has buoyancy and a manufacturing factory that is connected to it and has buoyancy itself, the hull to be dismantled is pulled into the cutting factory and dismantled, and the resulting dismantled A method for dismantling a ship's hull, characterized in that the material is transported to a manufacturing factory, where it is processed into a predetermined product, and at least the electricity, compressed air, and gas required by the cutting factory is supplied.