JP3942577B2 - Ship bow structure - Google Patents

Description

  The present invention relates to a ship's bow structure. More specifically, the present invention relates to a bow tower structure around a lifting machine that raises and lowers anchors of a ship.

A structure around the conventional lifting machine on the bow deck will be described with reference to FIG.
As shown in the figure, in a conventional ship, several anchorage-use mooring machines and dedicated mooring machines 110 are installed on the bow deck. The combined mooring machine is a combination of a lifting machine 103 and a mooring machine 104, and uses the prime mover 105 in common.
The lifting machine 103 includes a chain compressor 101 for guiding and stopping the chain, and a chain drum 102 for winding and unwinding the chain. The anchor U is lifted and lowered by a chain C passed through a hose pipe 107 provided between both side skins on the bow draft and the bow tower deck, and is held by the anchor U near the bell mouth at the outer end of the hose pipe. (Non-Patent Document 1).
Although there is a lifting machine alone, its configuration is substantially the same as that of the lifting machine 103.

The above-mentioned lifting machine 103, which is used as the mooring machine 104 or alone, is installed on the bow deck.
For this reason, the deck is dirty due to mud adhering to the chain C during lifting and rusting of the device, and cleaning and maintenance are difficult. In addition, since the oil base for cargo handling is required to always be in a clean state, the burden on the seafarer for cleaning and maintenance has been serious.

Shipbuilding Design Handbook 4th edition, pages 616-617, 3rd edition, issued on June 28, 1996 Published by Kansai Shipbuilding Association, Kaibundo Publishing Co.

  In view of the above circumstances, an object of the present invention is to provide a bow tower structure which can reduce cleaning and maintenance of the bow tower deck.

The ship's forehead structure according to the first aspect of the present invention has a lifting machine room surrounding a bow tower deck side opening of a hose pipe through which a anchorage chain and a lifting equipment equipped with a lifting machine and a chain compressor are placed on the bow tower deck. A cleaning facility for injecting cleaning water into the chain and a drainage facility for draining the washed mud water are provided in the lifting machine room, and the cleaning facility is located on the side of the bow tower of the hose pipe. A cleaning nozzle that injects cleaning water onto the chain near the opening, a cleaning nozzle that injects cleaning water onto the chain that is passing over the chain compressor, and a cleaning that injects cleaning water onto the chain that passes through the hose pipe And a nozzle .
The ship's bow structure according to the second invention is the ship's bow structure in the first invention, wherein the bow tower deck in the lifter room is inclined so that the front is high and the rear is low, and the rear end side of the lifter room Is characterized in that a water intake basin is formed and a drain pipe is connected to the external water intake basin .
The ship's bow structure according to a third aspect of the present invention is characterized in that, in the first aspect, the lifting machine room has four side walls and a top wall, and these walls have a soundproof structure.
The ship's head tower structure according to a fourth aspect of the present invention is the first aspect of the invention, wherein the lifting machine of the lifting facility is a dedicated machine separate from the mooring machine, and the lifting machine room is lifted except for the mooring machine. It is characterized by surrounding the dredging equipment and hose pipe opening on the deck side.

According to the first invention, the following effects are obtained.
a) Since the lifting equipment is surrounded by the lifting machine room and is not exposed, rust is unlikely to occur, and mud pulled up by the chain does not go out of the lifting machine room. Limited. For this reason, the burden of cleaning and maintenance is reduced.
b) by washing installation with a washing nozzle provided in three locations, that washed off well with mud to Ji En.
According to the second invention, the washed-off mud is collected in the intake by the bow tower deck inclined backward and can be discharged to the outside by the drain pipe . Become.
According to the third invention, the noise generated by the lifting machine and the chain is confined in the lifting machine room by the soundproof structure of the side wall and the ceiling wall, so that various operations at the time of mooring around the lifting machine room, The surrounding private houses are not disturbed by noise.
According to the 4th invention, it can be made the neat structure which eliminated the complicated projection on the bow tower deck, and the safety of mooring work etc. improves. Further, by surrounding the lifting equipment around the lifting machine room, the cleaning site is limited, so that the cleaning work is facilitated.

Next, an embodiment of the present invention will be described with reference to the drawings.
1 is a side view of a bow tower structure according to an embodiment of the present invention, FIG. 2 is a plan view of the bow tower structure, FIG. 3 is a partial sectional view of a side wall of a lifting machine room, and FIG. 4 is a lifting machine. It is an enlarged side view of a chamber.
In FIG. 1 and FIG. 2, 1 is a ship bottom skin, 2 is a bow tower deck, 3 is a bow skin.

  On the bow tower deck 2, a lifting equipment 12 is installed. The lifting equipment 12 includes a chain compressor 13 and a lifting machine 14, and the lifting machine 14 includes a drive source 15 such as an electric motor and a chain drum 16.

  A hose pipe 17 for passing an anchor chain C (hereinafter referred to as chain C) is formed between the bow deck 2 near the chain compressor 13 and the bow outer plate. The chain C passed through the hose pipe 17 is hung outside the ship from a bell mouth formed on both sides of the outer plate on the draft, and an anchor U is attached to the lower end thereof.

  A chain pipe 21 is erected on the bow deck 2 near the chain drum 16, and a chain locker 22 is installed immediately below the chain pipe 21. The chain locker 22 is a space for storing the chain C when the anchor U is wound up, and has a necessary volume. The chain pipe 21 is provided to protect the bow tower deck 2 from contact with the chain C.

A lifting machine room 30 is provided around the bow deck side opening of the lifting equipment 12 and the hose pipe 17 so as to surround the opening. That is, the lifting machine room 30 is composed of a side wall 31 and a ceiling 32 that surround the four circumferences, and is provided with a doorway through which people can enter and exit, but is a compartment that ensures a certain degree of liquid tightness. Yes.
And as shown in FIG. 3, the pillar 33 is standingly arranged in the corner part which faced the two side walls 31 of this lifting machine room 30, and a wall part is made of the steel plate 34 and the soundproof material 35 stuck on it. It is configured. A similar soundproof material 35 is also attached to the ceiling 32. When the soundproof material 35 is used in this way, it is possible to prevent the noise in the lifting machine room 30 from leaking to the outside.

As will be described in detail with reference to FIG. 4, a cleaning facility for the chain C is provided inside the lifting machine chamber 30. This cleaning equipment includes cleaning nozzles 41, 42, and 43 for injecting cleaning water (possible with seawater) and pipes 45 and 46 for supplying the cleaning water thereto.
The cleaning nozzle 41 is provided at a position for injecting cleaning water to the chain C in the vicinity of the opening on the bow deck side of the hose pipe 17, and the cleaning nozzle 42 injects cleaning water to the chain C passing over the chain compressor 13. The cleaning nozzle 43 is provided at a position for injecting cleaning water to the chain C passing through the hose pipe 17. A main pipe 47 supplies the cleaning liquid to the pipes 45 and 46.
If the valve 48 interposed between the pipes 45 and 46 and the main pipe 47 is opened and closed, the chain C can be cleaned using any cleaning nozzles 41 to 43.

In addition, a drainage facility is provided in the lifting machine room 30. The bow tower deck 2 is inclined so that the front is a little higher and the rear is a little lower. Therefore, a water intake 26 is placed on the rear end side of the lifting machine room 30 so as to collect sewage using this inclination. A drainage pipe 27 is provided for discharging sewage from there to the outside of the ship. Reference numeral 25 denotes a surface valve placed in the water intake 26.
Sludge water generated by cleaning the chain C can be discharged out of the ship using the drain pipe 27 when the surface valve 25 is opened.

Based on FIG. 2, the structure on the bow deck 2 will be described.
In the center of the bow tower deck 2, the above-mentioned lifting machine room 30 is arranged. Five mooring machines 50 are installed on the outer edge of the bow deck 2. This mooring machine 50 is disclosed in Japanese Patent Application No. 2003-333692 and has the following structure. That is, a winding drum that winds and unwinds the mooring rope R, an electric motor that can be remotely driven by rotating the winding drum, a pair of rollers that feed the mooring rope R to the outside, and an electric motor that drives the rollers The motor is mounted on a common frame. If this mooring machine 50 is equipped with a TV camera or the like at an appropriate location, the mooring machine 50 can be automatically operated from the bridge while performing centralized monitoring on the bridge, etc., and the mooring rope R can be fed out and taken up. It is something that can be done.
In the bow tower deck 2 to which the present invention is applied, since the mooring machine 50 is unitized, the lifting equipment 12 can be installed independently as a dedicated machine type, so that the top of the bow tower deck 2 is complicated. This makes it possible to have a clean structure without any protuberances and improve the safety of mooring work. Further, by surrounding the lifting equipment 12 with the lifting machine room 30, the cleaning site is limited, so that cleaning becomes easy.

It is a side view of the bow tower structure concerning one embodiment of the present invention. It is a top view of the bow tower structure. It is a partial cross section figure of the side wall of a lifting machine room. It is an enlarged side view of a lifting machine room. It is a top view of the conventional bow tower deck.

Explanation of symbols

12 Lifting equipment 17 Hose pipe 25 Surface valve 26 Water intake 30 Lifting machine room 41-43 Cleaning nozzle

Claims (4)

On the bow tower deck, there is a lifting machine room surrounding the opening on the bow tower deck side of the hose pipe through which the anchorage chain and the lifting equipment equipped with the lifting machine and chain compressor ,
In the lifting machine room, a cleaning facility for injecting cleaning water into the chain and a drainage facility for draining the washed mud water are provided.
The cleaning equipment includes a cleaning nozzle that injects cleaning water onto the chain near the bow deck side opening of the hose pipe, a cleaning nozzle that injects cleaning water onto the chain that is passing over the chain compressor, and the hose. A ship's bow structure comprising a cleaning nozzle for injecting cleaning water into a chain passing through the pipe . The bow tower deck in the dredger room is inclined so that the front is high and the back is low, and a water intake is formed at the rear end side of the dredger room, and a drain pipe is connected to the external intake forecastle structure of the ship according to claim 1, wherein in that <br/> possible to. The ship's bow structure according to claim 1, wherein the lifting machine room has four side walls and a ceiling wall, and these walls are soundproof structures. The lifting machine of the above-mentioned lifting equipment is a dedicated machine separate from the mooring machine, and the lifting machine room, except for the mooring machine, surrounds only the opening on the bow deck side of the lifting equipment and the hose pipe. The ship's bow structure according to claim 1.