JPH07144687A - Ship tank inner wall mobile working equipment - Google Patents

Abstract

PURPOSE:To transfer operators and necessaries easily to a working space for inspection and repairing or the like in a ship tank. CONSTITUTION:This working equipment is provided with an opening part 10 installed as a gondola access hole in a ship tank inner wall 9, a monorail 11 fixed after passing through this opening part 10, a trolley 12 traveling along this monorail 11, a hoist attached to this trolley 12 and a car gondola (suspension scaffold) 14 liftably hung down from this hoist, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving work device for a tank inner wall of a ship, and more particularly to a moving work device provided in a tank such as a ballast tank for inspecting and repairing the internal structure of the tank. is there.

[0002]

2. Description of the Related Art Ships such as large tankers and bulk carriers for bulking ores and grains are provided with inner shell walls extending longitudinally. FIG. 4 shows a half of a horizontal cross section of the center of a conventional large tanker. In FIG. 4, 1 is a ship-side outer plate, 2 is an upper deck, 3 is a longitudinal frame, 4 is a ship bottom,
5 is an inner shell wall, 6 is a flat, 7 is a cargo tank, and 8 is a ballast tank.

That is, the inner shell walls 5 are provided in four pieces on both sides to form three cargo tanks 7. Further, the ship side outer plate 1 and the inner shell wall 5 provided on the ship side constitute a ballast tank 8. A vertical frame 3 is provided on the ship side outer plate 1 and the inner shell wall 5 so as to extend longitudinally in the lengthwise direction of the ship to prevent the plates from bending. A flat partition 9 is provided in the ballast tank 8 as a horizontal partition plate, and is used for internal inspection.

In recent years, damage to the inside of the tank has increased, and regulations have been established to strengthen the inspection of the internal structure of the tank. Therefore, it has become necessary to provide an inspection device not only for newly built ships but also for ships in service. Conventionally, the following method has been used to inspect the inside of the ship-side outer plate 1 and the inner shell wall 5 that form the tank.

As a first method, the tank is filled with water,
RAFT method that floats an inflatable boat (RAFT), changes the water level and moves it up and down to check. The second method is the fixed ladder method in which a fixed ladder is installed in the tank for inspection. A third method is a temporary scaffolding method in which a temporary scaffold is provided for inspection. As a fourth method, the left and right ballast tanks 8
A flat system is provided in which flats 6 are provided at a fixed pitch, and a main or temporary ladder is provided between the flats 6, 6, ...

[0006]

However, each of the above inspection methods has the following problems. The RAFT method of the first method cannot be implemented when the ship is in a dog because there is no water. Inspection work while offshore or at sea is possible, but cannot be done unless the sea is quiet.
In addition, it is difficult to finely adjust the water level according to the inspection, and detailed inspection cannot be performed. If the inspection result shows that repair is required, repair work cannot be performed.

In the fixed ladder method of the second method, the ladder must be provided so as to cover the inspection place, the equipment cost becomes large, and the inspection work also goes up and down with the ladder, which puts a heavy burden on the worker. Also, where there is no ladder, it cannot be inspected.

The temporary scaffolding method of the third method is possible only inside the dog, not at sea. Moreover, the cost becomes large. The flat method of the fourth method is expensive because the flat portion is provided as a part of the hull structure. In addition, a ladder must be installed separately on the upper part of the flat, which increases the cost in the case of permanent installation and the burden on workers in the case of temporary installation.

The present invention is intended to solve the above problems. That is, the present invention provides a tank inner wall moving work device for a ship, which is capable of easily moving a worker or a necessary item to a work position for inspection or repair in order to perform inspection or repair in the tank. The purpose is to do.

[0010]

In order to achieve the above object, the present invention relates to an opening provided as a gondola transportation hole in an inner wall of a tank of a ship, a monorail fixed through the opening, and With a trolley that runs along the monorail,
A hoist attached to the trolley and a gondola suspended from the hoist so as to be lifted and lowered.

[0011]

According to the present invention, an opening provided in a tank inner wall of a ship as a gondola traffic hole, a monorail fixed through the opening, a trolley running along the monorail, and a trolley. Since it has a hoist attached and a gondola suspended from the hoist so that it can be lifted and lowered, a worker and necessary items are placed on the gondola, and the trolley is moved to a work position such as inspection and repair in the tank.
The vertical position of the gondola may be adjusted by the hoist.

Therefore, it is possible to easily move to a working position such as inspection or repair in the tank of the ship.

[0013]

1 to 3 show an embodiment of the present invention. FIG. 1 is a partially cutaway perspective view, FIG. 2 is a front sectional view of only a part, and FIG. 3 is a section line of FIG. It is a side surface sectional view which follows AA. 1 to 3, reference numerals 1 to 5 and 7
And 8 are similar to those shown in FIG.

Numeral 9 designates an inner wall (dividing wall) of the tank, 10
Is an opening provided as a gondola traffic hole in the inner wall 9,
11 is a monorail fixed to the inner wall 9 of the opening 10 through the opening 10, 12 is a trolley that travels horizontally along the monorail 11, 13 is a hoist attached to the trolley 12, and 14 is the hoist. The gondola is suspended from 13 so that it can be lifted up and down, and 15 is a hatch.

In the tank inner wall moving work device of a ship constructed as shown in FIGS. 1 to 3, a worker and necessary items are placed on the gondola 14 and the trolley is moved to a work position for inspection and repair in the tank 7. 12 may be moved, and the hoist 13 may be used to adjust the vertical position of the gondola 14. More specifically, the monorail 11 is permanently installed, and the landing area for the stairs for descending the ship is expanded to serve as the installation location for the trolley 12. Further, the trolley 12 and the hoist 13 are made light and compact so that they can be carried by a person, and the size of the opening 10 provided in the inner wall 9 is made as small as possible.

In this way, the trolley 12 and the hoist 13 are attached to the stairs, and the gondola 14 is attached there.
Also, the worker will get on the gondola 14 and load the necessary assets. After that, the remote control pendant is operated from above the gondola 14 to move it to any desired position. Although the ballast tank 8 is illustrated as the tank in FIGS. 1 to 3, the present invention can also be applied to the cargo tank 7.

[0017]

As described above, according to the present invention,
From the opening provided in the tank inner wall of the ship as a gondola traffic hole, the monorail fixed through the opening, the trolley running along the monorail, the hoist attached to the trolley, and the hoist Since it has a gondola that can be lifted up and down, put a worker and necessary items on the gondola, move the trolley to a work position for inspection and repair in the tank, and move the trolley up and down by the hoist. Adjust it.

Therefore, it is possible to easily move to a working position such as inspection or repair in the tank of the ship.

That is, according to the present invention, unlike the flat system in which the vertical wall structure is precisely inspected by the fixed scaffold, it is not necessary to install a horizontal scaffold, which greatly reduces the cost and since there is no flat, There are no obstacles to gas-free loading and unloading of assets from the bottom of the ship. Moreover, since the worker can freely move on the gondola, the moving time is shortened, the work efficiency is improved, the risk of dropping is reduced, and the labor of the worker is reduced. You can also work at any time, whether on the sea or on the dock.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a front sectional view showing a part of the same.

3 is a side sectional view taken along the section line AA in FIG.

FIG. 4 is a central sectional view of a hull showing an example of a conventional large tanker.

[Explanation of symbols]

 7 Cargo Tank 8 Ballast Tank 9 Inner Wall (Division Wall) 10 Opening 11 Monorail 12 Trolley 13 Hoist 14 Gondola

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Miura 3-1-15-1 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toni Technical Center

Claims (1)

[Claims] 1. An opening provided in a tank inner wall of a ship as a gondola traffic hole, a monorail fixed through the opening, and a trolley traveling along the monorail.
A tank inner wall moving work device for a ship, comprising: a hoist attached to the trolley; and a gondola suspended from the hoist so as to be able to move up and down.