JPH0710075A - Hull supporting equipment - Google Patents

Abstract

PURPOSE:To provide a hull supporting equipment capable of supporting the hull while suppressing the rolling without using mooring ropes on a quay. CONSTITUTION:A dolphin 4 is arranged opposite to a quay 10, and auto-tension type winches 5, 5a are provided on both the quay 10 and the dolphin 4. A net 2 to support the hull is arranged so as to be sunken at the sea bed 12 when the hull is not supported, and a rope 6 coiled around the winches 5, 5a is connected to each end part of the net 2. After a ship 1 is advanced between the quay 10 and the dolphin 4, the winches 5, 5a are driven to suspend the net 2, and lift the hull slightly above the sea level by the net 2 to suppress the rolling of the hull associated with the rolling of the hull due to the wind or waves affecting on the ship or due to the cargo shifting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hull supporting device, and more particularly to a hull supporting device whose main purpose is to suppress motion of a ship on a quay or the like.

[0002]

2. Description of the Related Art Conventionally, mooring of ships has been carried out by berthing the ship on a quay and fastening a large number of mooring lines to mooring columns on the quay.

[0003]

However, the above-mentioned conventional mooring means for a ship has a problem that it takes a lot of time and manpower, and further, there is shaking of the hull due to wind, waste, movement of cargo, etc. There are also problems such as hindering high-speed cargo handling with advanced cargo handling equipment. The present invention is intended to solve such a problem, and uses a mooring line by supporting a net or a perforated sheet that has been sunk on the seabed so that the net is slightly lifted by a winch and the hull is slightly lifted. An object of the present invention is to provide a hull supporting device capable of suppressing the shaking of a ship without the need.

[0004]

In order to achieve the above-mentioned object, a hull supporting device of the present invention is a device for supporting a hull on a wharf or the like, in which the ship is opposed to the wharf or the like with a mooring interval. An auto-tension winch is installed on both the dolphin and the berth, while the net or perforated sheet for supporting the hull is not supported by the hull and the dolphin. The rope is wound around each of the above-mentioned auto-tension winches, and both ends of the net or the perforated sheet are bound to the tips of the ropes. It is characterized by

[0005]

In the above-mentioned hull supporting device of the present invention, by driving the auto-tension winch and lifting the net or the perforated sheet from the seabed, the ship is lifted slightly more than when it is floating on the sea surface in a free state. It is possible to suppress the sway of the ship due to wind and waves acting on the ship. Further, when an excessive load equal to or higher than a predetermined rope tension is applied, the rope is unwound and the device is protected.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional side view of a hull supporting apparatus as a first embodiment, FIG. 2 is a plan view of the same, and FIG. Sectional drawing, FIG. 4 is a schematic side sectional view for explaining the same action, FIG. 5 is a side sectional view of a hull supporting device as a second embodiment, and FIG. 6 is a plan view thereof. The same reference numerals in FIGS. 1 to 6 indicate almost the same members.

A first embodiment will be described with reference to FIGS. In FIGS. 1 and 2, reference numeral 10 indicates a berth of the ship 1, and a recess 3 is formed on a vertical wall of the berth 10 facing the ocean, and an automatic tension winch 5 is provided inside the recess 3.
Is installed. On the other hand, the dolphins 4 are arranged opposite to each other on the dockside quay 10 with a mooring interval of the ship 1. Code 4
Reference symbol a denotes a support column 4a which is planted on the seabed 12 and supports the dolphin 4. A recess 3a is also formed on a vertical surface of the dolphin 4 facing the berth wharf 10, and an automatic tension winch 5a is also installed in the recess 3a.

Reference numeral 2 indicates a net sunk on the seabed, which is made of synthetic fiber ropes resistant to corrosion.
The tips of the ropes 6 and 6a are bound to both ends of the net 2, and the rope 6 and the tip bases of the rope 6a are wound around winches 5 and 5a, respectively. In addition, winch 5,
As shown in FIG. 2, a plurality of units 5a are arranged so as to face each other at predetermined intervals in the longitudinal direction of the quayside wall 10. In FIG. 1, reference numeral 7 indicates a cargo loaded on the ship 1, reference numeral 8 indicates a ramp way, and reference numeral 11 indicates the sea level.

In the above structure, the net 2 is set before the ship enters the port.
Is in the state of being submerged in the sea (state shown by the dotted line in FIG. 1). When the ship 1 arrives at the berth 10, the net 2, which was sunk on the seabed, drives the automatic tension winches 5, 5a on both sides to connect the ropes 6, 6a to both ends.
It is lifted from the seabed by winding up (the state shown by the solid line in FIG. 1). The suspended net 2 lifts the bottom of the ship 1, and the ship 1 is in a state of being lifted slightly more than when it is floating above the sea surface in a free state. This lifting amount is for each auto-tension winch 5,5.
It is adjusted in advance by adjusting the tension setting amount of a.

Also, the automatic tension winch 5, 5
a suppresses the sway of the ship due to wind and vain acting on the ship 1, and holds the ropes 6 and 6a in a tension state capable of supporting the ship even when the cargo 7 of the ship 2 moves, thereby suppressing the sway of the ship. Act. That is, even if rolling, pitching, or the like of the ship occurs while the ship 1 is supported by the net 2, the ropes 6 and 6a are not reeled out up to a predetermined rope tension, so that the occurrence of such shaking is suppressed. You can It should be noted that when an excessive load equal to or greater than a predetermined rope tension is applied, the ropes 6 and 6a are unrolled for the purpose of device protection, but such a situation rarely occurs during normal shaking.

In this way, after the boat 1 is slightly lifted, about two mooring ropes and the like on both sides are stretched between the mooring columns on the berth 10 in order to prevent lateral displacement of the marine vessel. And mooring the ship. Cargo 7 is a cargo handling machine that uses a rampway 8 or a crane (not shown) on the berth 10
Etc. In the case of this embodiment, when the net 2 is hoisted, the net 2 may scrape the bottom corner of the ship 1, causing wear to the contact part or damaging the coating. Therefore, it is desirable to take measures such as attaching a thick plate in consideration of wear allowance to the contact portion with the net 2 or attaching a soft porous sheet to the net or rope at the contact portion. One of the countermeasures is to attach a wear plate to the bilge keel.

Further, as in the modified examples shown in FIGS.
A flexible framework (a hollow plastic rod or the like) 2a having a convex curved shape is incorporated in the net 2 upward, and when the net 2 is hung by the ropes 6 and 6a on both sides, as shown in FIG.
To prevent the mesh 2 from rubbing the corner of the bottom of the ship by first contacting the center of the mesh 2 with the bottom of the ship 1 and then with the sides of the net 2 contacting the corner of the bottom. Is possible. When a mat (for example, made of a soft cloth) as shown by reference numeral 2b in FIG. 4 is attached to the contact portion of the net 2 with the corner of the bottom of the boat, the corner of the bottom of the boat can be protected more effectively. Become.

In the above embodiment, the auto-tension winches 5, 5a are installed in the recesses 3, 3a, but the auto-tension winches 5, 5a are not necessarily installed in the recesses 3, 3a. Alternatively, they may be installed on the respective upper surfaces of the quayside berth 10 and the dolphin 4. Also, the sizes of ropes 6 and 6a and hull supports (composed of an auto-tension winch and ropes and nets)
It is also possible to adjust the vibration suppression force by selecting the number of the. Further, even if a porous sheet is used instead of the net 2, substantially the same operational effect can be obtained.

Next, a second embodiment will be described with reference to FIGS. This second embodiment is intended for a ship with fins 11, and the net 2 having a width A narrower than the bottom width B is used so that interference between the fins 11 and the net 2 can be avoided. Other than that, it is similar to the case of the first embodiment. When the net 2 has a wide width as shown in FIGS. 1 and 2, it may be applied to a finned ship by forming a partial cutout hole at a portion contacting the fin 11. Is possible. Further, the present invention, in addition to the support of the ship against the berthing quay as in the above-mentioned embodiments,
It can also be used to support a ship against an offshore structure on the sea, and for example, work such as transshipment of cargo on the sea or repair of the ship on the sea can be carried out under the condition that the hull is restrained from shaking.

[0015]

As described in detail above, according to the hull supporting device of the present invention, the following effects and advantages can be obtained. (1) Since the boat is supported by being slightly lifted by the net or the perforated sheet, horizontal and vertical horizontal movement and horizontal and vertical sway of the boat due to movement of wind, waste and cargo can be eliminated. (2) Due to the above (1), there is no movement or shaking of the ship, so mooring (rope) is not required. (3) Since a net or perforated sheet is used, it can be applied to various ship bottom shapes. Moreover, since the hull is supported as a whole, a large amount of load is not concentrated on the local area of the ship. (4) When a load that exceeds the payout limit tension of the automatic tension winch is applied due to a drastic change in the cargo volume or a drastic movement of the cargo, the rope is paid out and the bearing capacity of the ship is controlled within the specified range. . In addition, even when an abnormal load is applied, the rope is paid out to protect the device. (5) Since only nets are sunk on the seabed, less ocean engineering work is required. (6) Can be applied to canal type or digging type quay. (7) Since it is mechanized, it can be remoted and automated.

[Brief description of drawings]

FIG. 1 is a side sectional view of a hull supporting device as a first embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side sectional view of a main part of the modified example.

FIG. 4 is a schematic side sectional view for explaining the same action.

FIG. 5 is a side sectional view of a hull supporting device as a second embodiment.

FIG. 6 is a plan view of the same.

[Explanation of symbols]

 1 Ship 2 Net 2a Flexible Frame 2b Mat 3,3a Recess 4 Dolphin 5,5a Auto-tension Winch 6,6a Rope 7 Cargo 9 Rampway 10 Wharf 11 Sea Surface 12 Seabed

Claims (1)

[Claims] 1. A device for supporting a hull on a wharf, etc., comprising dolphins arranged opposite to each other at a mooring interval of a ship on said wharf, etc., wherein both said dolphin and said wharf are self-tensioning. While a winch is installed, a net or a perforated sheet for supporting the hull is arranged so as to be submerged in the seabed between the berth and the berth and the like when the hull is not supported,
A hull supporting apparatus characterized in that a rope is wound around each of the auto-tension winches, and both ends of the net or the perforated sheet are bound to the tip end of each rope.