JPH0561223U - Mooring equipment - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] When pulling a towed object such as a large-scale underwater structure or an underwater tunnel installed on the bottom or underwater into the water, the connection between the towed body and the towed body The traction state is retained by the cord body that remains even if the cord body is released by cutting the cord body. [Structure] A traction body 40, one end of which is fixed to an anchor and the other end of which is rotatably supported by a pulley 41, and both ends of which are attached to a towed body by being wound around the pulley of the traction body. A plurality of cords 43a, 43b, 43c that form a mooring device 4, and one of the plurality of cords normally pulls the towed body and the towed body, Since the other cords pull the towing body and the towed body instead of the one cord when the one cord cuts, the traction force does not act in the normal state. It was arranged in a relaxed state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mooring device suitable for pulling a towed object such as a large-scale underwater structure or an underwater tunnel provided on the bottom or underwater into the water.

[0002]

[Prior art and its problems]

 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 the wire rope is connected to an anchor, and the other end is connected to the towed object. It is generally moored in connection with.

However, in the conventional mooring method using the wire rope, the wire rope is left in the water for a long time, so that the wire rope may be broken due to rust or the like. In this case, the stability of towed objects such as large-scale underwater structures and underwater tunnels is impaired, which is extremely dangerous.Therefore, the strength of the wire rope is maintained and inspected by diving into the water at regular intervals. This is a very complicated task because it must be done, and when replacing the wire rope, this is also a laborious task because it is also an underwater task, and the cost is enormous. Had the problem of

The present invention has been made in view of the present 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 or underwater into the water. In the case of towing, even if the connection between the towed body and the towed body is released due to cutting of the cord, etc., the remaining cord can maintain the towed state safely. Is to provide a mooring device that is unnecessary for a long period of time.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a mooring device is provided with a traction body having one end fixed to an anchor and the other end pivotally supporting a rotatable pulley, and a pulley of the traction body. A plurality of cords each of which is wound around and is fastened to the towed body at both ends thereof, and one of the plurality of cords is in a normal state and the towed body. In order to pull the body and the other cord body, in order to pull the towing body and the towed body instead of the one cord body, when the one cord body is cut, It is characterized in that it is arranged in a relaxed state in which the traction force does not act in the normal state.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

As shown in FIG. 1, a mooring device 4 according to this embodiment includes a base body 1 moored on a water bottom B, a support frame body 2 erected on the base body 1, and the support frame body. It is configured to moor an underwater tunnel A composed of a tunnel body 3 which is continuously connected to 2.

As shown in FIG. 2, the mooring device 4 has a lower end which is connected to the anchor U, a drafting body 40, a pulling body 40 and a pulley 41 which are connected to each other, and the other end of which is a drum. It is composed of a cord body 43 wound around 42 and a waterproof portion 44 for ensuring the waterproofness of the cord body 43.

The traction body 40 is formed so as to have a predetermined traction strength, and as shown in FIG. 3, a plurality of sealed pipes 40a are provided to reduce the weight thereof as much as possible. , And a storage pipe body 40b for storing this.

The sealing pipe 40a and the storage pipe body 40b are each formed of a highly flexible material, and the sealing pipe 40a is filled with a member of a high tension material and an adhesive of a high tension material. In addition, the storage pipe body 40b is filled with an adhesive of a high-tensile material, and the sealed pipes 40a are stored in an integrated state.

The cord 43 connects the tow body 40 and the mooring device A and pulls it. Both ends of the cord 43 are connected to a drum 42 that winds up or feeds the cord 43, and an intermediate portion. The part is wound around a pulley 41 held by the traction body 40.

The drum 42 is disposed in the utilization space R1 formed between the outer pit 30 and the inner pit 31 of the underwater tunnel A.

The cord 43 is composed of a plurality of cords, one of which 43a pulls the tow body 40 and the underwater tunnel A in a normal state, and the other two cords 43b. , 43c pulls the towing body 40 and the underwater tunnel A in place of the one cord body 43a when the one cord body 43a is cut. It is arranged in a relaxed state that does not work. Of course, the other two cord bodies 43b and 43c are replaced by the other cord body 43c instead of the one cord body 43b when the one cord body 43b is cut. In order to pull the tow body 40 and the underwater tunnel A, the other cord body 43c is arranged in a looser and relaxed state than the one cord body 43b.

Reference numeral 43b in the drawing denotes a pulley for turning the extending direction of the cord 43, and the pulley 43b is located between the pulley 41 and the drum 42 and outside the outer peripheral pit 30. It is installed in.

The waterproof portion 44 is provided to ensure waterproofness when the above-mentioned cord 43 is introduced from the outside of the outer pit 30 into the inside of the outer pit 30.

That is, the waterproof portion 44 accommodates a guide pipe 44 a which penetrates the thick portion of the outer peripheral pit 30 and allows the rope 43 to be inserted therein, and a viscous fluid such as grease inside. It is composed of a waterproof tank 44b, a viscous fluid reservoir tank 44c, and a viscous fluid supply / discharge pump 44d. The viscous fluid is, for example, pressurized to the same pressure as the pressure in water in which the mooring apparatus A is installed, and is applied so that the water does not enter the outer pit 30 through the guide pipe 44a. Is under pressure.

Therefore, since the viscous fluid of the waterproof tank 44b is pressurized and filled in the guide pipe 44a, and the cord 43 is arranged in a state of being filled in the viscous fluid. Water existing outside the outer pit 30 does not infiltrate inside the outer pit 30, and the inside of the utilization space R1 formed between the inner pit 31 and the inner pit 31 can be effectively used.

Since the mooring device 4 according to this embodiment is configured as described above, it remains even if the connection state between the tow body 40 and the underwater tunnel A is released by cutting the cord 43a or the like. The rope body 43b, 43c can maintain the pulled state and is safe, and in the mooring device 4 according to the present embodiment, the mooring depth can be changed according to the specific gravity of the underwater tunnel A. In addition, since water does not enter the underwater tunnel A, the inside of the use space R1 can be effectively used.

In the present invention, a well-known tension detecting sensor is arranged on each of the above-mentioned cords 43a, 43b, 43c, and the tension of each cord can be monitored with time by this sensor. With this configuration, the cut state of each cord 43a, 43b, 43c can be monitored in the underwater tunnel A, and the replacement time can be known in advance.

By the way, in the above-mentioned embodiment, the case where the cord body is formed with three cords has been described as an example, but the present invention is not limited to this, and the strength of the cord body 43 can be adjusted. However, the towed object is not limited to the underwater tunnel A, and can be used for mooring various towed objects such as other underwater structures and floating wave bodies. Can be applied.

[0021]

[Effect of the device]

 Since the present invention is configured as described above, when pulling a towed object such as a large-scale underwater structure or an underwater tunnel provided on the water floor or underwater into the water, the towed body and the towed body are Even if the connected state of the cable is released by cutting the cord, etc., it is safe because the remaining cord can maintain the above-mentioned towed state, and maintenance and replacement work of the wire rope etc. is required for a long time. Therefore, the maintenance is easy, and the cost required for the maintenance can be greatly reduced.

[Brief description of drawings]

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

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

FIG. 3 is a partial front view showing a towing body of the mooring device.

[Explanation of symbols]

 A Underwater tunnel (towed body) 4 Mooring device 40 Tow body 41 Pulleys 43a, 43b, 43c Rope U anchor

Claims (1)

[Scope of utility model registration request] 1. A traction body having one end fixed to an anchor and a rotatable pulley rotatably supported at the other end, and both ends of the traction body wound around the pulley and fastened to a towed body. And a plurality of cord bodies, wherein the plurality of cord bodies, in a normal state, pulls the towing body and the towed body, and the other cord body, In order to pull the towed body and the towed body instead of the one cord body when the one cord body is cut, it is arranged in a relaxed state in which a traction force does not act in a normal state. Mooring device.