JP5027867B2 - A screen anchor mooring protection sheet and a screen lifting method using the same - Google Patents

Description

  The present invention relates to a protective sheet used when pulling up an end of a net when installing a net in various places such as a dam, a lake, a reservoir, a river, and a method for pulling up the net using the protective sheet. It is about.

  In order to collect driftwood and debris that has accumulated on the surface of the lake and water in dams, lakes, reservoirs, rivers and other places, or to prevent driftwood and debris from flowing into the dam intake, It has been proposed (see, for example, Patent Document 1) and is actually installed in the field.

  Further, not only driftwood stoppers but also those that can purify water quality and green the water surface have been proposed (see, for example, Patent Document 2), and are actually installed in the field.

JP 2003-184057 A

Japanese Patent Laid-Open No. 10-110424

  These driftwood stoppers are equipped with a net that consists of a large net. By using this net, which is greatly expanded, you can collect driftwood and dust that stays on the surface of the lake and the water surface, or you can take in dam water. Driftwood and dust can be prevented from flowing into the mouth.

  However, taking the dam lake D ′ shown in FIG. 5 as an example to explain the construction work of this network, when the edge b ′ of the network B ′ is pulled up on the slope C ′, the network B ′ becomes a stump. It is caught by rocks, rocks, pebbles and other things, so it is not only difficult to lift, but also requires considerable force. And, the net B 'is large and its length is continuous, so it is very hard to pull it up on the slope C' of the dam lake D '.

  Further, if the slope C ′ is forcibly pulled up, at least a portion of the mesh field B ′ that is rubbed with the slope C ′ is damaged. In order to prevent this damage as much as possible, if the slope C 'is entirely covered with a sheet, the labor and time for covering the sheet cannot be measured. Furthermore, the sheet covering the slope C 'may be easily damaged and cannot be diverted.

  As described above, in the conventional network field installation work, there are various problems with respect to the network field B 'itself and in terms of its lifting method. However, no preferred solution has been proposed.

  In order to eliminate these drawbacks, the present invention has developed a protective sheet that can protect the edge of the net that is pulled up on the slope. In addition, in the net installation work, the above-mentioned disadvantages in the net installation work can be solved by covering the end of the net with this protective sheet.

That is, the netting mooring protection sheet according to the present invention is a long shape that can cover the end of the netting field, and has at least front and back materials, at least in the longitudinal direction of these long materials. A fastener is attached to one end.
When this screen anchor mooring protection sheet is used, the edge of the installed screen is covered with the screen anchor mooring protection sheet, and the fastener is closed so that the end of the screen is accommodated at least in the front and back materials. be able to. Therefore, even if the edge of the mesh field is pulled up on the slope, the edge of the mesh field does not get caught by stumps, rocks, pebbles, etc. near the slope, Moreover, it can be pulled up with a light force. Moreover, it is easy to cover the edge part of a mesh field with this mesh field mooring protection sheet by utilizing the said fastener. Furthermore, it is easy to remove this screen mooring protection sheet from the end of the screen after installation.

It is desirable that a fastener is attached to the other end in the longitudinal direction of the long material.
When this screen anchoring sheet is used, the end of the installed screen is opened with the fasteners attached to both sides of the long material in the longitudinal direction. By covering and closing both fasteners, the end of the net can be placed in at least the front and back materials. Therefore, it is possible to quickly and surely perform the operation of placing the end of the mesh field in at least the front and back materials. In addition, by using two fasteners, it is easy to cover the end of the net with this net mooring protection sheet. Furthermore, it is easy to remove this screen mooring protection sheet from the end of the screen after installation.

It is desirable that a narrowing rope is attached to at least one of the left and right ends of the long front and back materials.
When this screen anchoring sheet is used, the end of the screen can be squeezed with a narrowing rope. Therefore, it is possible not only to easily lift the edge of the mesh field, but also to further prevent the edge of the mesh field from touching the slope.

It is desirable that a narrowing rope is also attached to the other end of the left and right ends of the long front and back materials.
When this screen mooring protection sheet is used, not only the terminal at the end of the screen but also any part of the screen can be squeezed. Therefore, the bulk of the end of the net can be made as small as possible and can be pulled up smoothly and with a lighter force.

  It is desirable that the front and back materials are synthetic resin canvas. The mesh field mooring protection sheet made of a synthetic resin canvas is excellent in strength, so that the effect of protecting the edge of the mesh field is increased.

In addition, the net lifting method according to the present invention covers the end of the installed net with one of the above-described net mooring protection sheets, and the end of the net covering with the net mooring protection sheet, It is characterized by pulling up on the slope of the installation location.
When this lifting method is adopted, the end of the net is not caught by stumps, rocks, pebbles or other objects near the slope, and the end of the net can be pulled up smoothly and with light force. In addition, the efficiency of the Aiba installation will be greatly increased.

It is desirable to pull up the screen at the end of the net with a rope for narrowing the screen mooring protection sheet.
By adopting this lifting method, it is possible to lift the end of the mesh field with the rope for narrowing down, so it is not only easy to lift the edge of the mesh field, but the edge of the mesh field is You can avoid touching more.

It is desirable that the other half of the rope for mooring protection of the mesh field mooring protection sheet be pulled up in the state where the middle part of the mesh field is also squeezed.
By adopting this lifting method, it is possible to lift not only the terminal at the end of the mesh field but also any part of the middle, so that the bulk of the edge of the mesh field is made as small as possible and smoother. Can be raised.

  According to invention of Claim 1, after covering the edge part of the installed mesh field with this mesh field mooring protection sheet, the edge part of the mesh field is made of at least the front and back materials by closing the fastener. Therefore, even if the edge of the net is pulled up on the slope, the edge of the net is not caught by stumps, rocks, pebbles or other objects near the slope. The end can be pulled up smoothly and with a light force. Moreover, it is easy to cover the edge part of a mesh field with this mesh field mooring protection sheet by utilizing the said fastener. Furthermore, it is easy to remove this screen mooring protection sheet from the end of the screen after installation. The netting mooring protection sheet can be used repeatedly by opening and closing the fastener.

  According to invention of Claim 2, the edge part of the installed netting field is this netting mooring protection sheet in the state which opened the fastener attached to the both sides of the longitudinal direction of a elongate raw material, respectively. By covering and closing both fasteners, the end of the net can be placed in at least the front and back materials, so the work to put the end of the net in at least the front and back materials is done quickly and reliably. be able to. In addition, by using two fasteners, it is easy to cover the end of the net with this net mooring protection sheet. Furthermore, it is easy to remove this screen mooring protection sheet from the end of the screen after installation. The netting mooring protection sheet can be used repeatedly by opening and closing the fastener.

  According to the invention described in claim 3, since the end of the net field can be squeezed with the rope for narrowing down, not only the end of the net field is easy to lift, but also the end of the net field is the slope. You can avoid touching more.

  According to the invention of claim 4, since not only the terminal at the end of the mesh field but also any part of the middle can be squeezed, the bulk of the edge of the mesh field is made as small as possible smoothly, Moreover, it can be pulled up with a lighter force.

  According to the mesh field mooring protection sheet made of the synthetic resin canvas according to claim 5, since the strength is also excellent, the effect of protecting the edge of the mesh field is increased.

  According to the invention described in claim 6, the end of the net is not caught by stumps, rocks, pebbles or other objects in the vicinity of the slope, and the end of the net is pulled up smoothly and with a light force. Can do. In addition, the efficiency of the Aiba installation will be greatly increased.

  According to the invention of claim 7, since the end of the net field can be pulled up in a state of being squeezed with a rope for narrowing down, not only the end of the net field is easy to lift, but also the end of the net field Can be prevented from touching the slope more.

  According to the eighth aspect of the present invention, since not only the terminal at the end of the mesh field but also any part of the middle can be pulled up, the bulk of the end of the mesh field can be made as small as possible. Can be raised more smoothly.

It is a front view which shows an example of the netting mooring protection sheet by this invention. It is a figure which shows the state which covered the edge part of the mesh field with the mesh field anchoring protection sheet | seat shown in FIG. 1, (a) is the front view, (b) is the right view. It is the schematic which shows an example of the net pulling method by this invention using the net mooring protection sheet by this invention. It is a figure which shows an example of a net, (a) is the front view, (b) is the right view. It is the schematic which shows an example of the conventional net-field raising method.

  An example of a screen anchoring protective sheet according to the present invention and an example of a screen lifting method using the same will be described in detail with reference to the drawings.

The screen anchor mooring protection sheet A as an example of the screen anchor mooring protection sheet according to the present invention is a long shape that can cover the end b of the screen B, and has at least the front and back materials 1 and 1. A fastener 2 is attached to at least one end in the longitudinal direction of the long materials 1, 1, for example, at least the upper end portion of FIG. 1.
In addition, it is preferable that the length of the longitudinal direction of the materials 1 and 1 of the front and back of the netting mooring protection sheet A is about 10 m. Moreover, it is preferable that the height of the raw materials 1 and 1 on the front and back sides is such that the diameter is about 0.7 m when the screen mooring protection sheet A is formed into a cylindrical shape.

  The front and back materials 1 and 1 may be, for example, a double stack in which the lower end portions in FIG. 1 are connected, or a double stack in which the top and bottom ends in FIG. 1 are not connected. In the case of a double stack in which the lower end portion of FIG. 1 is connected, the fastener 2 is attached to the upper end portion of FIG. 1, and in the case of a double stack that is not connected to the upper and lower end portions of FIG. Fasteners 2 and 2 are attached to the upper and lower ends, respectively. In any case, it is preferable to have a cylindrical shape as shown in FIG.

  The material 1 is preferably made of a material that is resistant to wear, such as a polyester canvas, but can be made of, for example, polyethylene or cotton. The material is not limited to the example given here, and any material can be used as long as it can protect the edge b of the net B on the slope C.

  The fastener 2 is preferably resistant to water from the place where the screen anchor mooring protection sheet A is used and does not rust. The tape that is a part of the tape can be made of, for example, polyethylene terephthalate or polyoxymethylene. If the slider is made of, for example, a zinc alloy, the bottom fitting is made of, for example, an alloy of zinc and copper, and the opening fitting is made of, for example, polyoxymethylene, the entire fastener 2 is resistant to water and rusts. It will not be.

The left and right ends of the materials 1 and 1 on the front and back of the screen anchor mooring protection sheet A are not connected to each other, and at least one of them is cylindrically processed over the entire circumference, and the rope for narrowing the terminal in the cylinder 3 is inserted.
Here, the left and right end portions of the front and back materials 1, 1 that are not connected are cylindrically processed over the entire circumference, and the terminals 3, 3 are inserted into the left and right tubes 1a, 1a. If the rope 3 is made of, for example, a blended yarn of vinylon and polyester, it is advantageous because it is excellent in strength and hardly contains water.

The mesh field mooring protection sheet A shown here has such a configuration, and can protect the end b of the mesh field B pulled up on the slope C.
Taking the dam lake D shown in FIG. 3 as an example, the installation work of the netting field B will be described. The end b of the netting field B is covered with the netting mooring protection sheet A (to be wound up), and the fastener By closing it when there is one 2 and closing each when there are two fasteners 2, as shown in FIG. 2, the end b of the net B is placed at least in the front and back materials 1, 1. be able to. Therefore, even if the end b of the net field B is pulled up on the slope C, the end b of the net field B is not caught by stumps, rocks, pebbles or the like near the slope C. Can be pulled up smoothly and with a light force. In addition, by using the fastener 2, it is easy to cover the end b of the net B with the net mooring protection sheet A. Furthermore, it is easy to remove the screen mooring protection sheet A from the end b of the screen B after installation.

For example, the fastener 2 may be attached only to at least the upper end portion of FIG. 1, but here, the case where the fastener 2 is attached not only to the upper end portion of FIG. 1 but also to the lower end portion of FIG. ing.
When this screen mooring protection sheet A is used, the ends of the screen B installed in the state in which the fasteners 2, 2 attached to both sides of the long material 1, 1 in the longitudinal direction are opened. By covering b with the screen mooring protection sheet A (with a body-wound state) and closing both fasteners 2 and 2, the end b of the screen B can be placed at least in the front and back materials 1 and 1. Therefore, the operation | work which puts the edge part b of the net | field B at least in the raw materials 1 and 1 of the front and back can be performed quickly and reliably. In addition, the end b of the net B is easily covered with the net mooring protection sheet A by using the two fasteners 2 and 2. Furthermore, it is easy to remove the screen mooring protection sheet A from the end b of the screen B after installation. By opening and closing the fasteners 2 and 2, the netting mooring protection sheet A can be used repeatedly.

The narrowing rope 3 may be attached to at least one (for example, only the right end in FIG. 2) of the left and right ends of the long and front materials 1 and 1 of the screen mooring protection sheet A. The case where the rope 3 for narrowing down is also attached to the other end is illustrated.
When this screen mooring protection sheet A is used, not only one terminal d (the right end in FIG. 2) of the end b of the network field B but also any part (shown as c in FIG. 2) in the middle is narrowed down. be able to. Therefore, the bulk of the end portion b of the net B can be made as small as possible and can be pulled up smoothly and with a lighter force.

  Furthermore, the case where the materials 1 and 1 of the front and back of the netting mooring protection sheet A are made of a material resistant to wear such as a polyester canvas is illustrated here. If the materials 1, 1 on the front and back sides of the screen anchoring protection sheet A are made of such materials, the strength is excellent, and the effect of protecting the edge of the screen is increased.

  Next, an example in the case where the end b of the net field B is pulled up on the slope C of the dam lake D using the above-described net field mooring protection sheet A will be described.

As shown in FIG. 2, the end b of the net field B installed in the dam lake D was covered with the above-mentioned net field mooring protection sheet A (to be wound around) and covered with the net field mooring protection sheet A. As shown in FIG. 3, the end b of the net B is pulled up on the slope C of the installation site.
When this lifting method is adopted, the end b of the net field B is not caught by stumps, rocks, pebbles or other objects near the slope C, and the end b of the net field B is smoothly and lightly applied. Can be raised.

FIG. 3 shows a case where the end b of the net B covered with the net mooring protection sheet A is pulled up by the traction machine F installed on the bank E of the dam lake D.
If this pulling method is adopted, the end b of the net B can be easily pulled up without any fatigue on the site by the force of the traction machine F. Also in the conventional case, as shown in FIG. 5, the end b of the net B is pulled up using the same traction machine F.
The traction machine F is fixed to an anchor block G placed on the dam E of the dam lake D. This point is the same as in the conventional case, and in FIG.

When pulling up the end b of the net field B on the slope C of the dam lake D, at least the terminal d (see FIG. 2) of the end b of the net field B with the rope 3 for narrowing the net field mooring protection sheet A. It is better to pull it up with the right end of
If this lifting method is adopted, the end d of the end b of the net field B can be pulled up with the narrowing rope 3 being squeezed. The end b of B can be prevented from further touching the slope C.

Here, the case where the rope 3 for further narrowing the screen anchoring sheet A is further lifted in a state where the middle of the end b of the screen B (part c in FIG. 2) is also narrowed is illustrated. .
When this lifting method is adopted, not only the terminal d (the right end in FIG. 2) of the end b of the network B but also any portion in the middle (the c portion in FIG. 2) can be pulled up. Therefore, the bulk of the end b of the net B can be made as small as possible and can be pulled up more smoothly.

  An example of the network B is shown in FIG. The net place B is usually provided with a net 5 that can be suspended from the lake surface or the water surface by the float 4, and the driftwood that has accumulated on the lake surface or the water surface by the net 5 that is drooped from the lake surface or the water surface in a greatly expanded state. It is possible to collect dust and garbage, or to prevent driftwood and dust from flowing into the intake of the dam.

The material of the net 5 is usually made of polyethylene, and a weight 6 is attached to the lower end of the net 4 so that the net 4 can be kept taut.
When the net 5 is suspended from the float 4, ropes 7 and 7 made of resin, for example, are used. The height of the suspended net 5, that is, the height of the net B Usually, it is about 2 m.

In this way, Aiba B is large and its length is continuous. Therefore, it is extremely hard work to lift it up on the slope C of the dam lake D. There were various problems.
When the net mooring protection sheet A according to the present invention is used, for example, when pulling up the net B on the slope C of the dam lake D, as described above, various effects can be exhibited. The field mooring protection sheet A is extremely convenient. In addition, using this screen anchor mooring protection sheet A, for example, when the screen B is pulled up on the slope C of the dam lake D, as described above, the efficiency of the screen field installation work is greatly increased. The effect is immeasurable.

  DESCRIPTION OF SYMBOLS 1 ... Material, 1a ... Tube, 2 ... Fastener, 3 ... Rope, 4 ... Float, 5 ... Net, A ... Netting field mooring protection sheet, B ... Netting field, b ... End, c ... The other squeezed part , D ... terminal, C ... slope, D ... dam lake.

Claims (8)

  It is a long shape that can cover the end of the net, and has at least front and back materials, and a fastener is attached to at least one end in the longitudinal direction of these long materials. A netting mooring protection sheet.   The screen anchoring protective sheet according to claim 1, wherein a fastener is attached to the other end of the long material in the longitudinal direction.   The netting mooring protection sheet according to claim 1 or 2, wherein a narrowing rope is attached to at least one of the left and right ends of the long front and back materials.   4. The screen mooring protection sheet according to claim 3, wherein a narrowing rope is attached to the other end of the left and right ends of the long front and back materials.   The netting field mooring protection sheet according to any one of claims 1 to 4, wherein the material of the front and back is a canvas made of synthetic resin.   The end of the installed net is covered with the net mooring protection sheet according to any one of claims 1 to 5, and the end of the net is covered with the net mooring protection sheet. A net lifting method characterized by pulling up.   The rope lifting method according to any one of claims 1 to 5, wherein the rope is used for pulling up the screen at the end of the mesh field while being narrowed. .   The rope for anchoring the screen anchoring screen according to any one of claims 1 to 5, wherein the rope is pulled up in a state where the middle part of the screen is also squeezed. How to raise the net.

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