JP3942575B2 - Anchor storage structure - Google Patents

Description

  The present invention relates to an anchor storage structure. More particularly, the present invention relates to a structure for storing a ship anchor.

A conventional anchor storage structure will be described with reference to FIGS.
As shown in the figure, in a conventional ship, a lifting machine 103 equipped with a chain compressor 101 and a chain drum 102 for winding and unwinding a chain is arranged on the bow tower deck. The anchor U is held in the vicinity of the bell mouth 107 at the outer end of the hose pipe 106 by being raised and lowered by a chain C passing through a hose pipe 106 provided between the two outer skin portions on the draft of the bow and the bow tower deck. (Non-Patent Document 1).
In a ship provided with a large spherical bow 4 at the bow, the length and position of the hose pipe 106 are taken into consideration in order to prevent the bow 4 from being damaged when the anchor C is raised and lowered. Ingenuity has been made such as projecting 107 outward.

If the hull still sways due to waves, the anchor U or chain C may damage the paint on the bow skin. In some cases, a half-round bar was attached to the outer plate to prevent chain slippage, but this was not a drastic measure, and maintenance of the bow outer plate was time-consuming.
In addition, since the bow shape has to be determined in consideration of avoiding contact with the anchor U and the chain C, the degree of freedom in designing the bow shape is low and it is difficult to obtain high navigation performance.

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 an anchor storage structure that can improve navigation performance without damaging the bow skin.

An anchor storage structure according to a first aspect of the present invention includes an anchor recess provided at the bottom of a bow that can accommodate an anchor, a lifting facility provided on a bow deck, the anchor recess, and the lifting facility. An anchor device having a hose pipe through which an anchor chain passes is provided at the center of the hull, and two anchor devices are used as the first anchor device and the second anchor device, and the bow A chain locker for storing a chain is disposed between the hose pipe of the first anchor device and the hose pipe of the second anchor device. It is characterized by that .
The storage structure of the anchor of the second invention is characterized in that, in the first invention, the chain locker is divided into two chambers divided in the front-rear direction by a partition wall.

According to the first invention, the following effects are obtained.
a) Since the anchor is taken in and out from the bottom of the ship, the outer skin of the bow and the bow are not damaged by the anchor or the chain. Therefore, since the shape of the bow can be designed irrespective of the anchor, the navigation performance can be improved. In addition, since the anchor descends from the center of the hull, the hull can be stabilized in the left-right direction.
b) Except for the dredging equipment installed at the center of the hull, the bow deck also has a wide space in the width direction on the left and right, so that the deck can be used effectively.
c) Since there are two anchor devices, it is possible to stay on a single bed or on a double bed.
d) Since the first and second anchor devices are separated by the size of the chain locker, the two anchors do not come into contact with each other and the two chains are not entangled. Moreover, since the space between the two hose pipes is effectively used as a chain locker, the inboard space is not wasted.
According to the second invention, since the chain when the anchor is stored is housed in the individual chain lockers partitioned forward and backward, the chain is not entangled and can be used smoothly.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of an anchor storage structure according to an embodiment of the present invention, and FIG. 2 is a plan view of the anchor storage structure.
1 and 2, reference numeral 1 denotes a bottom shell plate, 2 a bow tower deck, 3 a bow skin plate, and 4 a bow formed in a lower portion of the bow.
In the present embodiment, two anchor devices, that is, the first anchor device 10 and the second anchor device 20 are provided apart from each other in the front-rear direction on the hull center line of the bow portion.
The first anchor device 10 and the second anchor device 20 have substantially the same configuration. In FIG. 1, the former is indicated by a solid line and the latter is indicated by a dotted line.

First, the first anchor device 10 will be described.
Reference numeral 11 denotes an anchor recess, which is formed on the bottom of the bow. Moreover, since this formation site | part is on a hull centerline, the anchor recess 11 is formed in a flat part in a ship bottom part. The anchor recess 11 may be any shape and size that can accommodate the anchor U, and is not particularly limited. In addition, in the accommodation state of the anchor U, it is preferable for the navigation performance improvement that the bottom part of the anchor U does not protrude from the ship bottom outer plate 1.

On the other hand, a lifting equipment 12 is installed on the bow deck 2. 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 a hydraulic motor and a chain drum 16.
The lifting equipment 12 is also installed on the hull center line on the bow tower deck 2.
A lifting machine room 30 is provided around the lifting equipment 12 so as to surround it. That is, the lifting machine room 30 is a section that allows a person to enter and exit from the side wall 31 and the ceiling 32 that surround the four circumferences, but ensures a certain degree of liquid-tightness.

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 in the lifting machine room 30 and the anchor recess 11. Yes.
The hose pipe 17 only needs to have a space for the chain C of the anchor U to go up and down, and there are no other restrictions on the shape and size.
A chain pipe 18 is erected on the bow deck 2 near the chain drum 16 in the lifting machine room 30, and a chain locker 19 is installed immediately below the pipe 18. The chain locker 19 is a space for storing the chain C when the anchor U is wound up, and has a necessary volume. The chain pipe 18 is provided to protect the bow tower deck 2 from contact with the chain C.

Since the second anchor device 20 is substantially the same device as the first anchor device 10, the corresponding members are denoted by reference numerals in the 20s that have the same number of one digit, and the description thereof is omitted. In the following, only a different configuration will be described.
In the second anchor device 20, the chain rocker 29 is disposed back to back with respect to the chain rocker 19 of the first anchor device 10, but the hose pipe 27 is disposed closer to the rear than the chain rocker 29. Therefore, in the first anchor device 10, the hose pipe 17 is disposed in the opposite direction to the front of the chain rocker 19. Correspondingly, the arrangement of the chain lockers 13 and 23 with respect to the lifting machines 14 and 24 in the lifting machine room 30 is also such that the chain locker 13 is closer to the front in the first anchor device 10 and the chain locker 13 in the second anchor device 20. The locker 23 is closer to the rear.

As described above, if the two hose pipes 17 and 27 are separated from each other in the front-rear direction, the chain C does not interfere with each other when the anchor U is lifted or lowered, so that a smooth beating is achieved. Storage is possible.
The two chain lockers 19 and 29 are preferably separated by the partition wall 5. In this case, since the two chains C are not entangled with each other, smooth use is possible.

The lifting machine room 30 accommodates two lifting facilities 12 and 22 and surrounds them in a liquid-tight manner. A cleaning facility for the chain C is provided. This cleaning equipment is composed of cleaning nozzles 41, 42, 43, 44 for injecting cleaning water (possible with seawater) and pipes 45, 46 for supplying cleaning water thereto.
The cleaning nozzles 41 and 42 are provided at positions where the cleaning water is sprayed onto the chain C passing over the chain lockers 13 and 23, and the cleaning nozzles 43 and 44 are chains passing near the upper portions in the hose pipes 17 and 27. C is provided at a position for spraying cleaning water. Reference numeral 45 is a branch pipe to each of the cleaning nozzles 41 to 44, and 46 is a main pipe for supplying a cleaning liquid to each of the branch pipes 41 to 44.
If the valve 48 interposed between the branch pipes 41 to 44 and the main pipe 46 is opened and closed, only the arbitrary cleaning nozzles 41 to 44 can be used.
The sludge water generated by washing the chain C may be discharged from the ship bottom to the sea using the hose pipes 17 and 27.

According to the chain storage structure of the present embodiment, the anchor U is taken in and out from the bottom of the ship, so that the bow outer plate 3 and the bow 4 are not damaged by the anchor U and the chain C. For this reason, the shape of the bow 4 can be designed irrespective of the anchor, so that the navigation performance can be improved.
Furthermore, since the anchor U descends from the center of the hull, the hull can be stabilized in the left-right direction. Moreover, since the wide space is opened in the left-right width direction except for the lifting facilities 12 and 22 installed in the center of the hull, the deck 2 can be used effectively.

It is a side view of the anchor storage structure concerning one embodiment of the present invention. It is a top view of the anchor storage structure. It is a side view of the conventional anchor storage structure. It is a top view of the conventional anchor storage structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 1st anchor apparatus 11 Anchor recess 12 Lifting equipment 17 Hose pipe 19 Chain locker 20 2nd anchor apparatus 21 Anchor recess 22 Lifting equipment 27 Hose pipe 29 Chain locker 30 Lifting machine room 41-44 Cleaning nozzle

Claims (2)

An anchor recess provided on the ship bottom of the bow that can accommodate an anchor, a lifting facility provided on the bow deck, and an anchor chain formed between the anchor recess and the lifting facility. An anchor device having a hose pipe to be passed is provided in the center of the hull,
Two anchor devices are used as the first anchor device and the second anchor device, and are provided in the bow portion so as to be separated from each other in the front-rear direction of the hull.
A structure for storing an anchor, wherein a chain locker for storing a chain is disposed between the hose pipe of the first anchor device and the hose pipe of the second anchor device . The chain locker by middle partition wall, the containment structure of the anchor according to claim 1, characterized in that it is divided into two chambers which are separated in the longitudinal direction.