JPH0786232B2 - Underwater mooring equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater mooring device suitable for towing a towed object such as a large-scale underwater structure or an underwater tunnel provided at the bottom of a water or underwater.

[0002]

2. Description of the Related Art Conventionally, when pulling a towed object such as a large-scale underwater structure or an underwater tunnel provided on the bottom or underwater into the water, one end of a wire rope is connected and fixed to an anchor, and Generally, the other end is connected and fixed to the towed body and is moored.

However, in the conventional fixed mooring system using the wire rope, for example, a part of a towed object such as a large-scale underwater structure or an underwater tunnel is projected from the water surface to serve as an entrance / exit for people and goods. There is a problem in that if a constant water level is to be maintained at all times due to the structure of the towed body or if the water depth changes depending on the environment, it cannot respond immediately.

As a means for solving the above-mentioned conventional problems, the other end of the wire rope is connected to a wire rope winding / unwinding device arranged in the towed body to cope with the water depth. Then, by winding or unwinding the wire rope, a part of the towed body may be constantly projected upward from the water surface or may be configured to maintain a constant water level.

However, when the wire rope is pulled from the outside of the towed body into the towed body, water easily flows into the towed body from the drawn-in portion, so that waterproofing becomes very complicated and maintenance is complicated. In addition to this, there is a problem that the cost becomes high.

The present invention has been made in view of the above situation, and an object thereof is to make a towed body such as a large-scale underwater structure or an underwater tunnel provided at the bottom of the water or underwater into a predetermined underwater condition. When pulling to the water depth position, water flows into the towed body even if the other end of the cord is fastened to the winding / rewinding device arranged in the towed body placed in the water. It is an object of the present invention to provide an underwater mooring device that has no fear and is mechanically simple and inexpensive.

[0007]

In order to achieve the above object, according to the present invention, the other end of a cord body, one end of which is fixed to an anchor, has the other end towed in water. The underwater mooring device which is inserted into the pressurizing device in the body and fixed to the winding / rewinding device is a technical premise, and the above pressurizing device is
The pressurizing means includes a guide pipe that penetrates the towed body and inserts the cord body therein, and means for pressurizing and supplying a viscous fluid into the guide pipe. Is configured to pressurize the viscous fluid so that water does not flow into the towed body through the guide pipe.

Further, according to the present invention, since the pressing force is automatically adjusted in accordance with the water depth of the towed body, the pressurizing device is connected to the water pressure detection means provided outside the towed body. It is characterized in that the viscous fluid is configured to operate so as to apply a predetermined pressure to the viscous fluid based on the hydraulic pressure information.

[0009]

Therefore, in the underwater mooring device according to the present invention, a predetermined pressure is applied to the viscous fluid in accordance with the water depth of the towed object to balance the internal and external pressures of the towed object. Since the pressure inside the towed body is set to be large, when pulling a towed object such as a large-scale underwater structure or an underwater tunnel provided on the water floor or underwater to a predetermined depth position in water, Even if the other end of the body is fixed to the winding / rewinding device arranged in the towed body arranged in water, there is no possibility that water will flow into the towed body at all.
The waterproof equipment can be simplified.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on an embodiment shown in the accompanying drawings.

An underwater mooring device K according to this embodiment is shown in FIG.
As shown in FIG. 1, it is composed of a base body 1 moored on the water bottom B, a support frame body 2 erected on the base body 1, and a tunnel body 3 connected to the support frame body 2. It is configured to moor the underwater tunnel A.

This underwater mooring device K, as shown in FIGS. 2 and 3, has a lower end connected to the anchor U.
Is connected to the towing body 10 via a pulley 11, and
The other end is composed of a cord body 13 wound around a drum 12, and a pressure device 20 for ensuring waterproofness of the cord body 13.

The traction body 10 is formed so as to have a predetermined traction strength, and in order to realize the weight reduction as much as possible, as shown in FIG. 4, a plurality of sealed pipes 10a, A storage pipe body 10b for storing this,
It consists of

The sealed pipe 10a and the storage pipe body 1
0b is made of a highly flexible material, and a member made of a high tensile material and an adhesive made of a high tensile material are filled and housed in the sealed pipe 10a. The inside is filled with adhesive of high tension material,
The sealed pipes 10a are housed in the same state.

The cord body 13 connects the tow body 10 and the underwater tunnel A and pulls the cord body.
Both ends are connected to a drum 12 which winds or sends out 3 and an intermediate portion is wound around a pulley 11 which is held by the traction body 10.

The drum 12 is arranged in a utilization space R formed between the outer pit 4 and the inner pit 5 of the underwater tunnel A.

Further, the cord body 13 is composed of a plurality of cords, and one cord 13a of the cord body 13 is in the normal state.
And the underwater tunnel A, and the other two cords 13
b and 13c, in order to pull the towing body 10 and the underwater tunnel A in place of the one cord body 13a when the one cord body 13a is cut, the traction force is normally maintained. It is arranged in a relaxed state that does not work. Of course, the other two cord bodies 13b and 13c are such that when the one cord body 13b is cut, the other cord body 13c replaces the one cord body 13b. In order to pull 10 and the underwater tunnel A, the other cord body 13c is arranged in a looser and relaxed state than the one cord body 13b.

Reference numeral 24 in the drawing denotes a pulley for turning the extending direction of the cord body 13, and the pulley 24
Is arranged between the pulley 11 and the drum 12 and outside the outer pit 4.

The pressurizing device 20 is provided to ensure waterproofness when the cord 13 is introduced from the outside of the outer pit 4 into the inside of the outer pit 4.

That is, the pressurizing device 20 includes
Of the guide pipe 21 through which the cord 13 is inserted to penetrate the thick portion of the pipe, a waterproof tank 22 for containing a viscous fluid such as grease therein, and a reservoir tank 23 for the viscous fluid.
And a supply / discharge pressurizing pump 25 for the viscous fluid, and the outer pit 4
And a water pressure detection sensor 26 disposed on the outer peripheral wall of the water pressure detection sensor 26. The supply / discharge pressurizing pump 25 pressurizes the viscous fluid based on the information detected by the water pressure detection sensor 26. The viscous fluid is actuated and is controlled so that the viscous fluid is in equilibrium with the pressure in water or the pressure of the viscous fluid is slightly higher than the pressure in water.

The water pressure sensor 26 is an underwater tunnel A.
When the mooring depth is changed in accordance with the specific gravity of the above, the changed water depth is automatically measured, and various known pressure sensors having excellent liquid tightness can be used.

Therefore, the viscous fluid in the waterproof tank 22 is pressurized in the guide pipe 21 so as to be balanced with the pressure in water, and the cord 13 is filled in the viscous fluid. Since the water is not provided from the outside of the outer pit 4 to the inner side of the outer pit 4 as a result, the inside of the utilization space R formed between the inner pit 5 and the inner pit 5 is completely prevented. Can be used effectively. Of course, the pressurizing operation control of the supply / exhaust pressurizing pump 25 to the viscous fluid can be manually performed.

In the underwater mooring device K according to this embodiment, even if the connection state between the tow body 10 and the underwater tunnel A is released by cutting the rope body 13a or the like, the remaining rope body 13 remains.
It is safe because the above-mentioned towed state can be maintained by b and 13c.

Further, in the present invention, the towed object to be towed is not limited to the underwater tunnel A, and is also applied to mooring various towed objects such as other underwater structures and floating wave bodies. can do.

[0025]

Since the present invention is constructed as described above, when a towed object such as a large-scale underwater structure or an underwater tunnel provided on the bottom of the water or underwater is towed to a predetermined water depth position in water. In the above, even if the other end of the cord is fastened to the winding / rewinding device disposed in the towed body disposed in water, the water will not flow from the insertion portion of the cord to the towed body. There is no possibility of inflowing to, there is no fear that it can be provided mechanically and inexpensively, maintenance is easy, maintenance costs can be greatly reduced, etc.
It has many excellent effects.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a mooring state of an underwater tunnel by an underwater mooring device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional explanatory view showing the configuration of the underwater mooring device.

FIG. 3 is an enlarged sectional explanatory view showing a configuration of a main part of the underwater mooring device.

FIG. 4 is a partial front view showing a towing body of the underwater mooring device.

[Explanation of symbols]

 A Underwater tunnel (towed body) K Mooring device 10 Towing body 13a, 13b, 13c Rope body 20 Pressurizing device 21 Guide pipe 25 Supply / discharge pressurizing pump 26 Water pressure detection sensor

Claims (2)

[Claims] 1. The other end of a cord body, one end of which is fixed to an anchor, is inserted into a pressurizing device inside a towed body which is disposed in water, and is fixed to a winding / rewinding device. In the underwater mooring device, the pressurizing device includes a guide pipe that penetrates the towed body and inserts the cord body therein, and a means for pressurizing and supplying a viscous fluid into the guide pipe. , And the pressurizing means pressurizes the viscous fluid so that water does not flow into the towed body through the guide pipe. 2. The operation of the pressurizing device is controlled so as to apply a predetermined pressure to the viscous fluid, based on water pressure information from a water pressure detecting means arranged outside the towed body. The underwater mooring device according to claim 1.