JPH0428848B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a float fence.

(Prior Art) Float fences have conventionally been used to prevent seawater pollution caused by channel dredging, floor excavation, etc., and to prevent seawater pollution caused by earth and sand pushed into the sea during reclamation work.

As shown in FIG. 6, the float fence 1 includes a float 2, a hanging membrane 3 hanging down from the float 2, a bottom anchor 4 that pulls the hanging membrane 3 in the bottom direction, and a bottom anchor 4 that pulls the hanging membrane 3 in the left-right direction. It is equipped with left and right anchors (not shown) for mooring,
In some cases, mooring ropes 5 of left and right anchors (not shown) were attached to joints 6 of the hanging membrane 3 of the float fence 1.

However, the joint part of the hanging membrane of the float fence is heavy because connecting fittings such as shafts and carabiners are attached to it. It used to be easy to sink. As a result, the float fence sinks, causing a situation in which pollution flows out of the float fence.

Therefore, in the case of conventional float fences,
The mooring cables for the left and right anchors were installed at the midpoint in the longitudinal direction of the hanging membrane of the float to eliminate sinking.

However, in the case of conventional float fences, when the left and right anchor mooring cables are attached to the hanging membrane using a connecting ring that connects the ends of the tensioning wire, the length of the tensioning wire may be slightly increased. If there is any misalignment, the position of the connecting ring will shift,
It was not possible to perform the installation work smoothly.

In some cases, holes are provided in the hanging membrane for connecting the mooring ropes of the left and right anchors, and these holes are used to directly attach the mooring ropes of the left and right anchors to the hanging membrane of the float fence. If there was a slight discrepancy in the length of the mooring cables, it was necessary to change the positions of the left and right anchors or to use different mooring cables.

(Problems to be Solved by the Invention) In view of the above, the present invention is designed to solve the problem when installing the mooring ropes of the left and right anchors, even if there is a slight deviation in the length of the extension wire or the mooring ropes of the left and right anchors. It is an object of the present invention to provide a float fence in which the attachment position of a mooring cable can be adjusted according to the position of a connecting ring at the end of a tensioning wire and the length of the mooring cable.

(Means for Solving the Problems) In order to achieve the above object, the invention according to claim 1 provides a float fence having a hanging membrane at the lower part of the float, wherein a longitudinally intermediate portion of the hanging membrane. The gist of the float fence is that a plurality of slit holes are provided close to each other in the front and rear, and mooring devices for left and right anchors are attached to the hanging membrane through the slit holes.

In addition, in the invention according to claim 2, "a sheet in which a plurality of slit holes are provided close to each other in the longitudinal direction of the hanging membrane of the float is formed so that the periphery of the sheet is provided with a reinforcing sheet on the hanging membrane. At least one of the mooring cables of the left and right anchors is connected to the connecting ring at the end of the hanging membrane extension wire by passing through the slit hole in this sheet. The gist of the invention is ``a float fence according to claim 1,'' characterized in that:

(Action of the invention) In the float fence according to claim 1,
Since a plurality of slit holes are provided close to each other in the front and rear, one slit hole is selected from among the plurality of slit holes, and the mooring device of the left and right anchors is passed through this slit hole, thereby attaching the mooring device. It is designed so that it can be attached to the hanging membrane.

In addition, with this float fence, the mooring devices for the left and right anchors are attached to the longitudinally intermediate portion of the float fence, which makes it possible to reduce the load applied to the joint part of the hanging membrane of the float fence. There is.

Further, in the float fence according to claim 2, from among the plurality of slit holes provided in the front and rear of the sheet attached to the longitudinally intermediate portion of the hanging membrane of the float by metal fittings via a reinforcing sheet, Select the hanging membrane at the position of the connecting ring at the end of the tensioning wire, pass at least one of the mooring cables of the left and right anchors through the slit hole of this sheet, and connect it to the connecting ring at the end of the tensioning wire. It is becoming possible to do this.

In addition, in the case of this float fence, instead of directly providing holes in the hanging membrane, a sheet with multiple slit holes close to each other in the front and back is attached to the hanging membrane, and the left and right anchors are moored to the slit holes of this sheet. Since at least one of the cables is passed through and connected to the connecting ring at the end of the tensioning wire, the mechanical strength of the hanging membrane itself does not decrease.

(Example) Hereinafter, the float fence of the present invention will be described in detail according to an example shown in the drawings.

The float fence 11 of the present invention, as shown in FIGS.
Left and right anchors 15 and a bottom anchor 14 are attached to prevent the left and right from falling down.

The float 12 is, for example, a styrofoam float 2 with a length of about 1 m, as shown in FIG.
By arranging a plurality of floats 25 and interference members 26 alternately and passing a connecting rope 30 through them, the plurality of floats 25 and interference members 26 are connected to a length of approximately 20 m, and this is formed into a cylindrical sheet. 27 was used. Note that the material and structure of the float 12 are not particularly limited, and may be made of a hollow tubular member such as a steel pipe. A plurality of floats 12 are connected by a joint portion 18 provided at the end of the float 12, and the sea surface of the polluted area is surrounded by the plurality of floats 12. A hanging membrane 13 is suspended from this float 12.

The hanging membrane 13 is similar to the float 12, for example.
It is made of synthetic fiber such as polyester cut into a length of 20 m, and its upper end is attached to the cover 27 of the float 12, so that the hanging membrane 13 is suspended from the float 12. ing. A plurality of hanging membranes 13 are connected by joint portions 19 of the hanging membranes 13. The entire polluted area is surrounded by the connected hanging membrane 13 and the float 12.

A plurality of bottom anchors 14 are attached to the lower end of this hanging membrane 13, and are adapted to pull the hanging membrane 13 toward the bottom. As a result, the hanging membrane 1
3 stands upright toward the bottom.

Left and right anchors 15 are installed at the longitudinally intermediate portion of the hanging membrane 13 of the float fence 11 configured as described above.
A mooring device is installed.

The mooring device of the left and right anchors 15 refers to the mooring rope 16 and the connecting ring 23, and the float fence 11 of the present invention has a plurality of mooring devices such as the mooring rope 16 or the connecting ring 23 provided in front and rear proximity to the hanging membrane 13. The mooring cable 16 is attached to the hanging membrane 13 by passing through the slit hole 17 of the mooring cable 16. Hereinafter, specific examples shown in this example will be explained.

What is shown in FIGS. 4 and 5 is a mounting structure that uses a tensioning wire 21 for the hanging membrane 13,
What is shown in FIG. 4 is a case in which the tensioning wire 21 is attached to only one of the hanging membranes 13, and a plurality of tensioning wires 21 are attached to the longitudinal direction intermediate portion of the hanging membrane 13 of the float fence 11. A sheet 20 with a slit hole 17 is attached, and then the mooring rope 16 on the side where the tension wire 21 is not attached is inserted into the slit hole 1 of this sheet 20.
7, and the mooring cables 16, 16 of the left and right anchors 15, 15 are connected together to a connecting ring 22 consisting of a shackle or the like that connects the adjacent ends of the tensioning wires 21, 21. .

Moreover, what is shown in FIG.
A sheet 20 provided with a plurality of slit holes 17 close to each other in the longitudinal direction is attached, and then,
A connecting ring 23 made of a shackle or the like is passed through the slit hole 17 of the sheet 20 of the hanging membrane 13, and the pair of left and right connecting rings 22, 22 are connected by this connecting ring 23. The mounting structure is such that the mooring cables 16, 16 of the left and right anchors 15, 15 are connected to the pair of left and right connecting rings 22, 22, respectively.

In all of the above examples, the mooring cable 16 and the connecting ring 23 are inserted into the slit hole 17 of the sheet 20.
By passing the mooring line 16 through the hanging membrane 1
However, as shown in FIGS. 4 and 5, since the sheet 20 is provided with a plurality of slit holes 17 in the front and back direction, the length of the tension wire 21 is Even if there is a slight deviation in the connecting positions of adjacent end portions back and forth, the advantage is that the adjustment can be made by selecting the slit hole 17 to be used.

In this embodiment, as shown in FIGS. 4 and 5, a hole is made in the longitudinally intermediate portion of the hanging membrane 13 of the float fence 11 at a position where the end of the tensioning wire 21 is connected. A sheet 20 provided with a slit hole 17 is applied to this hole, and then a rubber reinforcing sheet 28 is interposed between the sheet 20 and the hanging membrane 13, and the metal fittings 29 are used to clamp and fix the sheet 20. 20 is attached to the depending membrane 13.

In addition, even without using the sheet 20 provided with the slit holes 17, the mooring device can be attached by providing a plurality of slit holes close to each other in the front and rear of the hanging membrane and passing the mooring cable or connecting ring through these slit holes. You may also do this.

In addition, the left and right anchors 1 prevent falling to the left and right.
As for the attachment position of the mooring line 16 of No. 5, it is more stable if it is above the float fence 11. Therefore, in this embodiment, the mooring cable is connected to a connecting ring 22 that connects the adjacent ends of the tension wires 21, 21 attached to the upper part of the hanging membrane 13.
6 was installed.

In addition, the positions to attach the mooring ropes 16 of the left and right anchors 15 and the number of places to attach the mooring ropes 16 should be determined by taking into account the size of the float fence 11 and the size of the sea area and polluted area where the float fence 11 will be used. to be determined.

(Effects of the Invention) With the above configuration, in the float fence according to claim 1, since the plurality of slit holes are provided close to each other in the front and back, it is possible to select from among the plurality of slit holes. One slit hole is selected, and the mooring devices of the left and right anchors can be passed through this slit hole and attached to the hanging membrane. For this reason, with this float fence, even if there is a slight deviation in the length of the tensioning wire or the mooring cables of the left and right anchors when attaching the mooring ropes of the left and right anchors, the connection ring at the end of the tensioning wire can be fixed. The attachment position of the mooring cable can be adjusted according to the position of the mooring cable and the length of the mooring cable.

In addition, in this float fence, the mooring devices for the left and right anchors are attached to the longitudinally intermediate portion of the float fence, so the load applied to the joint part of the hanging membrane of the float fence can be reduced accordingly. It can prevent the float fence from sinking. As a result, it is possible to reliably prevent pollution from flowing out of the float fence due to sinking of the float fence.

Further, in the float fence according to claim 2, from among the plurality of slit holes provided in the front and rear of the sheet attached to the longitudinally intermediate portion of the hanging membrane of the float by metal fittings via a reinforcing sheet, Select the hanging membrane at the position of the connecting ring at the end of the tensioning wire, use the slit hole in this sheet to pass through at least one of the mooring cables of the left and right anchors, and connect it to the connecting ring at the end of the tensioning wire. It is now possible to connect them. Therefore, the attachment and detachment of the mooring ropes of the left and right anchors becomes easy and can be done reliably.

In addition, in the case of this float fence, instead of directly providing holes in the hanging membrane, a sheet with multiple slit holes close to each other in the front and back is attached to the hanging membrane, and the left and right anchors are moored to the slit holes of this sheet. Since at least one of the cables is passed through and connected to the connecting ring at the end of the tensioning wire, the mechanical strength of the hanging membrane itself does not decrease.

[Brief explanation of drawings]

Fig. 1 is a front view showing the float fence of the present invention, Fig. 2 is an enlarged plan view showing the longitudinal middle part of the hanging membrane of the float fence of the present invention, and Fig. 3 is taken from line AB in Fig. 1. Figure 4 is a vertical cross-sectional view schematically showing the cut state, and the mooring cables of the left and right anchors are connected to the tensioning wire using a sheet with a slit hole in the longitudinal middle of the hanging membrane of the float fence. FIG. 5 is an enlarged perspective view showing another structure for attaching the left and right anchors to the hanging membrane, and FIG. 6 is a front view showing a conventional float fence. Explanation of symbols, 12... Float, 13... Hanging membrane, 14... Left and right anchors, 16... Mooring rope, 1
7...Slit hole, 21...Wire for extension.

Claims (1)

[Scope of Claims] 1. A float fence having a hanging membrane at the lower part of the float, in which a plurality of slit holes are provided in a longitudinally intermediate portion of the hanging membrane in close proximity to each other in the longitudinal direction, and a plurality of slit holes are provided adjacent to each other in the longitudinal direction of the hanging membrane. A float fence characterized in that a mooring device for left and right anchors is attached to a hanging membrane. 2. A sheet with a plurality of slit holes provided close to each other in the longitudinal direction of the hanging membrane of the float,
The periphery of the sheet is attached to the hanging membrane by means of metal fittings that clamp and fix it through a reinforcing sheet, and at least one of the mooring cables of the left and right anchors passes through the slit hole of this sheet and the ends of the hanging membrane's tensioning wires are attached to the hanging membrane. 2. The float fence according to claim 1, wherein the float fence is connected to a connecting ring in the section.