JPH06336190A - Submersible barge - Google Patents

Abstract

PURPOSE:To provide a submersible barge capable of increasing the steering stability with a simple structure and being made lightweight. CONSTITUTION:A straightening vane 14 provided to stabilize the advance direction of a barge 1 at the bow section is liftably suspended from the barge 1 via anchor chains 15. The straightening vane 14 is concurrently used as an anchor, the steering stability can be increased when the straightening vane 14 is hoisted from the water bottom, the structure is simplified, it is made lightweight, and the manufacturing cost and sailing cost can be reduced.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a diving barge.

[0002]

2. Description of the Related Art Diving barges are used, for example, for transporting undersea structures and the like, transporting sunken vessels, or transporting large work vessels over water. This dive barge, as shown in Figure 9,
A large number of ballast tanks 102 are provided in the ship 101, the ballast tanks 102 are filled with water, the deck 103 of the ship 101 is sunk below the surface of the water, and after the large work boat is put on, the water in the ballast tank 102 is drained. With a large work boat on board, the boat floats up to the water line, and is sailed by, for example, a tug boat, pusher, or by itself.

Each ballast tank 102 is made into an airtight chamber, and as shown in FIG. 10, it communicates with the water outside the ship via a water injection valve 104, while it also has an air pipe 105 as shown in FIG. It is connected to the discharge port of the air pump 106 via the valve and can communicate with the atmosphere via the opening / closing valve 107.

When pouring water into each ballast tank 102, the opening / closing valve 107 is opened and the pouring / draining valve 104 is opened. When water is drained from each ballast tank 102, the pouring / draining valve 104 is opened and the opening / closing valve 107 is closed, and the air pump is closed. Compressed air can be pushed into each ballast tank 102 from 106.

The above-mentioned air pipe 105 has a larger protruding length downward as the air pipe 105 corresponding to the front ballast tank is larger, so that the ballast tank 102 on the rear side allows water to enter a higher position. As a result, it is also possible to tilt the deck (down the stern) and unload the cargo.

Further, regardless of the barge according to the present invention, the ship is always provided with an anchor. Furthermore, in conventional diving barges, the bottom of the ship is often formed flat, which has a disadvantageous bottom structure for enhancing the stability of the marine vessel.
In order to eliminate this disadvantage, for example, a pair of right and left rectifying plates (skegs) may be provided on the stern part.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When the anchor and the skeg are provided at 01, the number of parts is large, the weight is heavy, the manufacturing cost is high, and the navigation cost is also high.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a diving barge with a simple structure, which can enhance the stability of marine vessel maneuvering and reduce the weight.

[0009]

In order to achieve the above-mentioned object, a diving barge according to the present invention is provided with a straightening plate provided at the stern part for stabilizing the traveling direction of the pontoon via an anchor chain. It is characterized by having an anchor function by suspending it up and down on a ship.

[0010]

[Operation] In the present invention, the current plate can also serve as the anchor by lowering the current plate to the bottom of the water.

[0011]

The present invention can be applied to any diving barge, but the diving barge to which the present invention is actually applied will be specifically described with reference to the drawings. As shown in the longitudinal side view of the hull in the longitudinal direction of FIG. 1, the longitudinal side view of the hull in the lateral direction of FIG. 2 and the cross sectional plan view of FIG. 3, a large number of ballast tanks 2 are provided in the barge 1. A pouring / draining duct 4 connected to each ballast tank 2 via an on-off valve 3 is formed.

The layout of the pouring / draining duct 4 is appropriately designed depending on the position of each ballast tank 2. In this embodiment, as shown in FIG. 3, the ballast tanks 2 are arranged in four rows in the ship width direction. It is formed in a U-shape with a pair of branch passages 5 extending in the ship length direction with a proper distance from the center of the boat and a communication passage 6 for communicating these end portions on the bow side.

A pouring / draining channel 8 is continuously provided at both ends of the communicating passage 6 in the ship width direction via another opening / closing valve 7a, and the pouring / draining duct 4 is opened by opening the opening / closing valve 7a. It is connected to the outside water.

A pair of water pumps 10 are arranged on the bow portion 9, and the suction port 10a of each water pump 10 is provided with another on-off valve 7.
b is connected to the communication passage 6 and the outlet 10b of each water pump 10a is connected to the pouring / draining passage 8 via another opening / closing valve 7c to close the opening / closing valve 7a. By opening the on-off valves 7b and 7c, the water in the pouring / draining duct 4 is sucked into the water pump 10, and the pouring / draining channel 8
It is possible to discharge the water from outside the ship. The ballast tank 2 on the bow has only a lower half and a hollow upper part so as to have buoyancy when the stern is submerged in water as described below.

That is, the opening / closing valves 7a, 7b, 7c constitute a directional control valve 7 for switching and connecting the pouring / draining duct 4 to the suction port 10a of the water pump 10 and the water outside the ship. A filter 11 is provided outside the pouring / draining channel 8 to filter the pouring / draining.

At the upper part of each ballast tank 2, a ventilation pipe 13 is introduced which communicates with the atmosphere on the superstructure 12 provided at the bow, and each ballast tank 2 is constantly exposed to the atmosphere through this ventilation pipe 13. Communicated.

The bottom of the stern is slanted, and a pair of skegs (rectifying plates) 14 for stabilizing the hull are provided below the bottom of the stern at appropriate intervals in the ship width direction. Each of the skegs 14 has a weight larger than that of a normal anchor, and as shown in the vertical sectional side view of FIG. 4, the cross sectional plan view of FIG. 5 and the perspective view of FIG.
It is also used as an anchor by suspending it on the barge 1 at 5.

Each anchor chain 15 is connected to a movable pulley 17 which runs in a wire duct 16 formed in the upper part of the ship. The movement of the movable carriage 17 is guided by a rail (or a slide base) 23 provided as needed, as shown in FIG.

A mooring winch 19 for winding a mooring line 18 is provided on the superstructure 12 provided at the bow of the mooring line. The mooring pulley 20 and the fixed pulley 21 arranged on the bow side of the movable pulley 17 in the wire duct 16 are wound around, and the ends thereof are fixed to the movable pulley 17 or the fixed pulley 21.

That is, as shown in the explanatory view of FIG. 7, anchoring the skeg 14 to the water bottom prevents the pontoon 1 from flowing into the water flow, and further, as shown in the explanatory view of FIG. Then, by winding the anchor chain 15 with the skeg 14 anchored on the water bottom, the skeg 1
With the weight of 4, the stern is pulled down to the bottom of the water,
Is made horizontal in the water.

The anchor chain 15 is provided with a chain stopper 22 for stopping the anchor chain 15 at an arbitrary feeding amount, and as shown in the vertical sectional front view of FIG. It is provided above.

In this embodiment, as shown in FIG. 7, when the skeg 14 is anchored to the bottom of the water and then the on-off valve 3 and the on-off valve 7a are opened, water outside the vessel is poured into the drainage channel 8, It is injected into each ballast tank 2 through the on-off valve 7 a, the pouring / draining duct 4 and the on-off valve 3. At this time, since the upper part of each ballast tank 2 is communicated with the atmosphere through the ventilation pipe 13,
There is no risk that the internal pressure of each ballast tank 2 will rise and hinder water injection.

After the water injection into each ballast tank 2 is completed, the anchor chain 15 is wound up against the buoyancy of the cavity 2e at the stern, so that the stern portion is moved by the weight of the skeg 14 as shown in FIG. It is pulled down to the bottom of the water, and the barge 1 is positioned horizontally in the water.

When the diving barge is to be floated, first, the anchor chain 15 is extended to make the stern part of the hollow 2
It is levitated by the buoyancy of e, and then the on-off valve 3.7b.
7c is opened, the on-off valve 7a is closed, and the water pump 10 is operated to discharge water from each ballast tank 2 to float the pontoon 1 horizontally. At this time, since the upper portion of each ballast tank 2 is communicated with the atmosphere via the ventilation pipe 13, there is no possibility that the internal pressure of each ballast tank 2 is reduced and the drainage is disturbed.

Since the skeg 14 of the pontoon 1 is also used as an anchor, the skeg 14 can be pulled up to the bottom of the pontoon 1 during navigation to enhance the marine vessel maneuvering stability of the pontoon 1 and to reduce the number of parts. In addition, the manufacturing cost can be reduced, and the weight can be reduced, whereby the navigation cost can be reduced.

Particularly, as in this embodiment, the mooring line 18 and the mooring winch 19 are attached to the skeg 14 and the anchor chain 15.
When used for raising and lowering, the large skeg can be raised and lowered with a small mooring winch, the configuration is simplified, the number of parts is further reduced, and the cost can be further reduced significantly.

It is also possible to use a windlass for winding the anchor chain 15 without using the mooring line 18 and the mooring winch 19. Further, the skeg 14 may be fixed with the chain stopper 22 while the skeg 14 is being lifted, and the mooring line 18 may be removed from the anchor chain 15 and used as a stern mooring line.

[0028]

As described above, since the diving barge of the present invention can improve the stability of the marine vessel maneuvering by providing the straightening vane on the pontoon and can also serve as the straightening vane, The number of points can be reduced, the structure can be simplified, and the weight can be reduced by using a small winch.
As a result, manufacturing costs can be reduced and navigation costs can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an embodiment of the present invention.

FIG. 2 is a vertical side view of an embodiment of the present invention.

FIG. 3 is a cross-sectional plan view of one embodiment of the present invention.

FIG. 4 is a vertical side view of an embodiment of the present invention.

FIG. 5 is a cross-sectional plan view of one embodiment of the present invention.

FIG. 6 is a perspective view of an embodiment of the present invention.

FIG. 7 is an explanatory diagram of one embodiment of the present invention during diving or ascending.

FIG. 8 is an explanatory diagram at the time of diving according to an embodiment of the present invention.

FIG. 9 is a vertical sectional side view of a conventional example.

FIG. 10 is a cross-sectional plan view of a conventional example.

[Explanation of symbols]

 1 Ship 14 Skeg 15 Anchor chain

Claims (1)

[Claims] 1. An anchor function is provided by suspending a current plate provided on the stern of the stern for stabilizing the traveling direction of the pedestal so that the rectifier can be lifted up and down via an anchor chain. Dive barge.