JPS604324B2 - Mooring device of a mooring body floating on the sea surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mooring device for a mooring body floating on the sea surface, and particularly to a mooring device suitable for use in places where there is a difference between high and low tides.

Rafts, lighthouses, watchtowers, offshore work platforms for ocean development,
In the case of large-scale moorings, such as floating cities and airfields on the sea, the need for floating mooring bodies above the sea surface is expected to increase more and more in the future. These mooring bodies are normally moored by a piece attached to a weight sitting on the seabed, but if the length of the piece is constant, the sea level will rise due to tides and waves. There is soot that can cause the soot to become too tight and cause the mooring to break, or cause the mooring to sink below the sea surface.Also, as the sea level drops, the soot loosens and causes the mooring to float significantly. There were some problems, such as the position becoming unstable.

In order to keep the tension of the element constant against these drawbacks, the element is drawn out according to the height of the mooring body from the seabed,
This method requires complicated and expensive equipment, and is completely impractical, especially when the equipment becomes large. This invention is a mooring device aimed at solving these drawbacks, in which a mooring body is attached to a mooring body floating on the sea surface, and a pulley is attached to a weight seated on the seabed, which can be freely rotated by a universal joint. Attach the element from the mooring body to its pulley, attach a float submerged in the sea to the opposite end of the element, and select the number, size, and mounting position of these floats appropriately to increase the buoyancy of the mooring body itself. This device balances the buoyancy of the submerged float and the buoyancy of the submerged float.

Accordingly, even if the sea surface rises and falls due to tides or waves, and the mooring body moves up and down accordingly, the submerged float always moves up and down below the sea surface in the opposite direction to the movement of the mooring body.
The material is kept at a constant tension at all times, using a weight and a pulley on the seabed.
The mooring body is moored to the stereotactic layer. An embodiment of the mooring device of the present invention will be described with reference to the drawings. FIG. 1 is a front view, and FIG. 2 is a side view seen in the longitudinal direction, and 1 is a mooring body floating on the sea, such as a raft or a lighthouse. , watchtowers, offshore work platforms for offshore development, maritime cities, maritime airfields, etc. are shown, with buoyant bodies 3 (such as styrofoam, etc.) placed within a framework 2 made of metal or concrete IJ, and beams 4 placed at key points. It is provided.

A car bell 5 for mooring is seated on the seabed, and a pulley 6 is attached to it. This pulley 6 can be freely rotated by the free bush hand 7, and even if the original position changes due to the flow of seawater or the movement of the mooring body, the pulley will be rotated accordingly, and twisting force will be applied to the pulley and its mounting shaft. It is designed so that you do not have to worry about things like this. A tether 8 is attached to the upper or lower part of the mooring body 1 at an appropriate position, and this element is hung on a pulley 6 as shown in the figure.
A float 9 submerged in the sea is attached to the tip of the opposite body.

The number, size, and mounting position of the floats are appropriately selected so that the buoyancy of the mooring body 1 itself and the float of the submerged floats are balanced. Due to the buoyancy of the floats 9, the elements 8 between the mooring body 1 and the floats 9 are tensioned via a pulley, mooring the mooring body. Therefore, when the mooring body 1 goes up and down due to the ebb and flow of the tide, waves, etc., the floats 9 always move up and down under the sea surface in the opposite direction to the movement of the mooring body 1, and a constant tension is always applied to them. There are no canopies where the cables can become loose or break due to excessive force. If there were no submerged floats and the cables were attached directly to the dowel on the seabed, when the sea level fell, the cables would slack and the mooring would float a lot, making its position unstable; teeth,
A large tension may be applied to the element and the element may break, or the mooring body may sink below the sea surface. Similarly, if the float is not a submerged float but a float floating on the sea surface, when the sea level drops, both the mooring body and the float will fall and the cable will become loose, making the position of both the mooring body and the float unstable. Become. Furthermore, if the sea level rises, unreasonable force will be applied to the vessel, or both the mooring body and the float will be submerged. In addition, since the pulley 6 is rotatably attached to the weight 5 by the adjustable saddle 7, even if the mooring body or float moves, the pulley will rotate accordingly, and no torsional force will be applied to the pulley or its mounting shaft. , no strain is placed on the cables or pulleys.

As shown in Figure 1, the position of the float 9 is such that the depth of the float is greater than twice the length of the difference between high and low tides from the sea surface at high tide.

In this way, even when the sea level is at its lowest during low tide, the submerged float will not float on the sea surface, loosen the float, and cause the mooring body to float. The mooring device of the present invention has the above structure, and is a simple and inexpensive device that can stabilize the tension and position of the mooring body floating on the sea surface even if the sea surface rises and falls due to tides, waves, etc. This was realized by

[Brief explanation of drawings]

Figure 1 shows the mooring body of this invention seen from the front, and the second
The figures are all diagrams showing the view from the side. Explanation of symbols: 1... Mooring body, 2... Frame, 3... Buoyant body, 4... Beam, 5...
... Weight on the ocean floor, 6... Pulley, 7...
・Free support, 8... Mooring element, 9... Submerged float. Figure 1 Figure 2

Claims (1)

[Claims] 1 In a device for mooring a mooring body floating on the sea surface, the mooring line attached to the mooring body is hung on a pulley rotatably provided by a universal joint to a weight seated on the seabed, and the other end of the mooring cable is A submerged float is attached to the mooring body, and the mooring body is moored by the buoyancy of the submerged float, and the buoyancy of the mooring body itself and the buoyancy of the submerged float are balanced. A mooring device for a mooring body.