JP4618525B2 - Suspended anti-pollution membrane - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a suspended pollution control film.
[0002]
[Prior art]
In the case of water area construction such as construction in the bay, it has been conventionally practiced to lay a pollution prevention film so as to surround the construction water area and prevent the pollution from spreading outside the construction water area. In such a pollution prevention film, generally, an anchor chain extending in a substantially horizontal direction is fixed along the lower edge of the curtain, and the curtain is suspended in water by the weight of the anchor chain. The pollution control film generally has a curtain length of 5 to 10 m. When removing such a pollution control film, a diver rolls up an underwater curtain and binds it to the float. The pollution control membrane integrated with the float was lifted by a crane and landed.
[0003]
By the way, when adding a water intake to a dam body, it has been conventionally practiced to construct a water stop wall on the dam body and make a construction space appear inside the water wall. In order to prevent the spread of pollution in the construction area, it is necessary to lay a pollution prevention film in the water that reaches the bottom of the dam lake from the water surface, for example, the vertical length (hereinafter referred to as the curtain length) extends to 50 m. . Such a pollution prevention film cannot be rolled up by a diver, and in order to lift one pollution prevention film (width dimension of about 15 m) from the water, 4-5 winches simultaneously lift the lifting wire. Need to roll up.
[0004]
[Problems to be solved by the invention]
However, as shown in FIG. 10A, the conventional pollution prevention film 22 is installed such that the anchor chain 23 extends in a substantially horizontal direction along the lower edge of the curtain 10, and such pollution prevention is performed. When the membrane 22 is pulled up by winding up the lifting wire 6 with several winches, as shown in FIG. 10B, the substantially center of the anchor chain 23 hangs down by its own weight, and the suspended anchor chain 23 As a result, the curtain 10 is drawn to the center, and the curtain 10 may move to the center and be unable to be rolled up.
[0005]
Then, this invention was made | formed in view of the said situation, and even if it is a case where a curtain is long in the vertical direction, it aims at providing the suspension type | mold antifouling film | membrane which can be rolled up easily.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a curtain for preventing pollution diffusion, an annular member disposed on one side of the curtain, arranged at predetermined intervals in the vertical direction, and arranged in a plurality of rows, A lifting wire that is inserted through the member and connected at one end to the lower end of the curtain, and an intermediate weight chain that is disposed on the other side of the curtain and is locked in the vertical direction in alignment with the arrangement of the annular members. It is characterized by that.
[0007]
In the present invention, when the lifting wire is wound up with a winch or the like, the intermediate weight chain has its lower end pulled upward and curved toward the other side of the curtain and suspended. The antifouling film is gradually bent to the other side of the curtain, following the intermediate weight chain, and folded in two. Further, since the annular members adjacent to each other in the longitudinal direction of the intermediate weight chain are sequentially curved toward the other side of the curtain, the anti-fouling film is sequentially folded in a zigzag manner between the adjacent annular members in multiple stages. Become.
[0008]
In the present invention, the intermediate weight chain may be locked from a substantially intermediate position between the annular members adjacent in the vertical direction to the lower annular member. As a result, the thickness of the intermediate weight chain that is sequentially bent and overlapped when the lifting wire is wound up can be reduced, and the antifouling film can be easily pulled up. Furthermore, by arranging the intermediate weight chains in a staggered manner, the thickness of the intermediate weight chains that are sequentially curved and stacked can be further reduced, and the pollution prevention film can be more easily lifted.
[0009]
Further, the present invention may be configured such that a plurality of connecting portions that traverse the pollution prevention film are provided on the curtain, and the annular member is disposed at substantially the center of the adjacent connecting portions. In this case, the curtain can be neatly folded in half by refracting the connecting portion sequentially.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A suspended pollution prevention film according to an embodiment of the present invention will be described with reference to FIGS. The suspension type pollution prevention film 1 according to the present invention is a suspension type pollution prevention film 1 for preventing the diffusion of pollution from a specific water area, and as shown in FIG. 3, wires arranged at predetermined intervals in the vertical direction. Guides (annular members) 2 are arranged in a plurality of rows on one side surface 10 a of the curtain 10, and a lifting wire 6 having one end connected to the lower end of the curtain 10 is arranged in each row of the longitudinal wire guides 2. The intermediate weight chain is arranged on the other side surface 10 b of the curtain 10 so as to be aligned with the row of the wire guides 2.
[0011]
Thereby, when the pollution prevention film 1 which concerns on this invention drives the several winch 7 (refer FIG.4 and FIG.7) installed in the float carrier 5 and winds up the wire 6 for lifting, as shown in FIG. In addition, the lower end portion of the intermediate weight chain is pulled upward, and the intermediate weight chain between the lower end portion and the lowermost wire guide (annular member) 2 is gradually curved toward the other side surface 10b of the curtain 10. It is configured as follows. As a result, the anti-pollution film 1 follows the curvature of the intermediate weight chain so that the curtain 10 at the portion between the lower end and the lowermost wire guide 2 is curved toward the other side surface 10b. Fold it in half. And this pollution prevention film 1 makes the curtain 10 between the adjacent wire guides 2 zigzag by curving the intermediate | middle weight chain between the wire guides 2 adjacent to the vertical direction to the other side surface 10b side of the curtain 10 one by one. The structure is folded in multiple stages.
[0012]
FIG. 2 shows an example in which the suspended pollution prevention film 1 according to the present invention is constructed on a dam body 8, and the float carrier 5 that holds the pollution prevention film 1 is constructed in a construction water area (FIG. 2 and FIG. 2). It is floated in a substantially U-shape so as to surround S) in FIG. Then, as shown in FIG. 7, the pollution prevention film 1 is suspended from a mooring portion (not shown) disposed on the outer surface of the float carrier 5 and the upper end of the curtain 10 at a predetermined interval. A metal fitting (not shown) is connected by a suspension chain 9 and the float carrier 5 and the pollution prevention film 1 are connected. As shown in FIGS. 2 and 4, the pollution prevention film 1 includes a first pollution prevention film 1 a and a fourth pollution prevention film 1 d installed adjacent to the dam body 8, and a first pollution prevention film. A second antifouling film 1b connected to 1a, and a third antifouling film connected on one side to the second antifouling film 1b and on the other side to the fourth antifouling film 1d 1c and divided.
[0013]
Here, the detail of the pollution prevention film 1 which concerns on this invention is demonstrated based on the 1st pollution prevention film 1a shown in FIG. In the first antifouling film 1a, the curtain 10 is formed of a polyester-based chemical fiber, and a plurality of connecting portions 11 (see FIG. 9) crossing the first antifouling film 1a in the horizontal direction. It is divided. And the connection belt 12 is extended in the edge part of the curtain 10 of these connection parts 11 both sides, and this 1st antifouling film | membrane 1a connects the adjacent connection belts 12, and is divided | segmented and formed. The curtains 10 are sequentially connected.
[0014]
Further, as shown in FIG. 3, the first pollution prevention film 1a has a plurality of (five in this embodiment) wire guides (annular members) 2 arranged at predetermined intervals in the vertical direction. A plurality of rows (five rows in this embodiment) are arranged on one side surface 10a of the curtain 10, and at the lower ends of the rows of the wire guides 2, as shown in FIG. The provided joint fitting 13 is disposed. A lifting wire 6 for connecting one end to the joint fitting 13 is inserted into each of the wire guides 2 arranged in the vertical direction on the same row. As shown in FIGS. 4, 7, and 8, the other side is rotatably held by each winch 7 disposed on the float carrier 5. As shown in FIG. 7, these lifting wires 6 are guided by guide rollers 14 installed on the side edge of the float carrier 5 and are suspended in water.
[0015]
As shown in FIG. 3, a reinforcing belt 15 is provided in a lattice shape on one side surface 10a of the curtain 10, and the wire guide (annular member) 2 includes a longitudinal reinforcing belt 15 and a lateral reinforcing member. It is disposed at the intersection with the belt 15. Further, reference numeral 18 in FIG. 3 denotes a joint rope (with an eggplant ring) (not shown) disposed on one side edge of the second pollution prevention film 1b, and the first pollution prevention film 1a. It is the rope for joints (with eggplant ring) (refer FIG. 9) which connects the 2nd pollution prevention film | membrane 1b.
[0016]
Moreover, as shown in FIG. 3, the upper weight chain 19 and the intermediate | middle part weight chain 20 as an intermediate | middle weight chain are being stopped by the 1st pollution prevention film | membrane 1a based on this invention to the curtain 10a other side surface 10b. The weight chains 19 and 20 are arranged in a plurality of rows (5 rows in this embodiment) in alignment with the rows of the wire guides 2 extending in the longitudinal direction on the side surface 10a side of the curtain 10. The upper weight chain 19 is connected to the connecting belt 12 extending at the upper end edge of the curtain 10 and the second connecting portion 11 from the top in FIG. The intermediate weight chain 20 is secured from the coupling portion 11 to the wire guide 2 positioned immediately below the coupling portion 11, and is arranged in a staggered manner in the region below the upper weight chain 19. It is installed. Note that the lower end of the intermediate weight chain 20 at the lowest position is locked to the lower end of the curtain 10a. In addition, the first antifouling film 1 is not limited to the staggered arrangement of the intermediate weight chain 20, but is appropriately arranged as required.
[0017]
Further, the second pollution prevention film 1b, the third pollution prevention film 1c, and the fourth pollution prevention film 1d according to the present invention have substantially the same configuration as the first pollution prevention film 1a, Each of the pollution control films 1b, 1c, 1d is formed with a connecting portion 11 (see FIG. 3) at the same position (height) as the first pollution control film 1a. Further, in the pollution prevention films 1b, 1c, and 1d, a plurality of wire guides (annular members) 2 are arranged in a plurality of rows on one side surface 10a of each curtain 10, and the wire guides arranged in the same row. The lifting wires 6 are respectively inserted into the lifting wires 2, and one ends of the lifting wires 6 are connected to the joint fittings 13 (see FIG. 6) at the lower ends of the rows of the wire guides 2. Further, as shown in FIGS. 4, 7, and 8, the other sides of the lifting wires 6 are respectively held on a winch 7 disposed on the float carrier 5 so as to be able to be wound up. In the pollution prevention films 1b, 1c, and 1d, an upper weight chain 19 and an intermediate weight chain 20 as intermediate weight chains are disposed on the other side surface 10b of each curtain 10, and of these, the intermediate weights The chains 20 are arranged in a staggered manner (see FIG. 3) in the region below the upper weight chain 19 as in the case of the first antifouling film 1a.
[0018]
The antifouling films 1a, 1b, 1c, and 1d have a structure in which connecting belts 12 (see FIG. 9) adjacent to each other are connected by a joint rope (with eggplant ring) 18 to be connected. Further, the upper weight chain 19 adjacent to the dam body 8 of the first pollution prevention film 1a and the fourth pollution prevention film 1d has its pollution prevention film 1 suspended in the water area, as shown in FIG. The upper end is structured to be replaced with a mooring ring 21 provided on the bank 8. Furthermore, the lower ends of the curtains of the respective antifouling films 1a, 1b, 1c, and 1d are formed as required according to the shape of the bottom of the water area, as shown in FIG.
[0019]
In such a configuration, the operation of the suspended pollution prevention film 1 of the present embodiment will be described. When removing the pollution prevention film 1, first, the joint rope (with eggplant ring) 18 is released, and the pollution prevention films 1a, 1b, 1c, and 1d are divided. Then, a plurality of winches 7 (see FIG. 7) installed on the float carrier 5 are driven in synchronization to wind up the lifting wire 6. Thereby, as shown in FIG. 1, the pollution prevention film | membrane 1 (1a, 1b, 1c, 1d) moves upwards so that a lower end may adjoin to the wire guide (annular member) 2 of the lowest position.
[0020]
At this time, the weight of the intermediate weight chain 20 at the lowest position acts on the other side surface 10 b of the curtain 10, and the portion between the lower end of the curtain 10 and the wire guide 2 at the lowest position is the other part of the curtain 10. Curved to the side surface 10b side and folded in two. In addition, since the anchor chain (not shown) is not provided on the lower edge of the curtain unlike the conventional pollution prevention film, the lifting wire 6 is wound up like the pollution prevention film having the conventional anchor chain. At this time, the curtain 10 does not get stuck at the center with the weight of the anchor chain.
[0021]
When the lower end of the antifouling film 1 is sufficiently close to the lowermost wire guide 2, the lowermost wire guide 2 is moved in the vertical direction so as to push up the lowermost wire guide 2 at the lower end. It is brought close to the adjacent wire guide 2. Even in this case, the weight of the intermediate weight chain 20 secured between the wire guides 2 acts on the other side surface 10b of the curtain 10, and the portion between the wire guides 2 adjacent to each other in the longitudinal direction of the curtain 10 The curtain 10 is bent toward the other side surface 10b and folded into two. In this way, by repeating the operation in which the portion between the wire guides 2 adjacent in the vertical direction is bent toward the other side surface 10b of the curtain 10 and folded in two, the pollution prevention film 1 is as shown in FIG. Then, it is folded in multiple stages in a zigzag manner.
[0022]
At this time, the present antifouling film 1 is configured such that the connecting portion 11 of the curtain 10 is bent at the approximate center between the wire guides 2 adjacent in the longitudinal direction, that is, the portion between the wire guides 2 is folded in two. Therefore, the pollution preventing film 1 can be refracted easily by the connecting portion 11 and can be easily and compactly folded, and a load is applied to the curtain 10 in the refracted portion. There is nothing to hang. Furthermore, since the intermediate weight chain (intermediate weight chain) 20 is arranged in a staggered manner in the pollution prevention film 1 according to the present invention, it is easier to minimize the overlap of the weight chains when folded in multiple stages. It is possible to raise it. The folded antifouling film 1 is wound on a sling belt (not shown) while being held on the side surface of the float carrier 5, and the lifting wire 6 is removed from the joint fitting 13. Etc.
[0023]
Therefore, even if the curtain 10 is long in the vertical direction, the suspension-type antifouling film 1 according to the present invention can be easily submerged by simply winding the lifting wire 6 with the winch 7 installed on the float carrier 5. Further, the raised anti-pollution film 1 is folded in a zigzag manner in multiple stages.
[0024]
【The invention's effect】
As described above in detail, according to the suspension-type antifouling film according to the present invention, even when the curtain is long in the vertical direction, it can be easily lifted from the water, and the lifted pollution Since the prevention film is folded in a zigzag manner in multiple stages, the prevention film is suitable for a suspended pollution prevention film laid in a specific water area.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a suspension-type antifouling film according to the present embodiment. In particular, when a lifting wire is pulled up, a portion between the lower end of the antifouling film and the lowermost annular member is It is a figure which shows the state which folds into two and the site | part between the cyclic | annular members adjacent to a vertical direction curves gradually and folds.
FIG. 2 is an explanatory view of a suspended pollution prevention film of the present embodiment, and in particular, a perspective view showing a pollution prevention film laid so as to surround a dam body.
FIG. 3 is an explanatory view of a suspended pollution prevention film according to the present embodiment, particularly a plan view of a first pollution prevention film alone.
FIG. 4 is an explanatory diagram of a suspended pollution prevention film according to the present embodiment, in particular, a plan view showing the pollution prevention film laid so as to surround a dam body.
FIG. 5 is an explanatory diagram of a suspended pollution prevention film according to the present embodiment, and particularly shows a state in which an upper weight chain adjacent to a bank body is coupled to a mooring ring.
FIG. 6 is an explanatory diagram of a suspension type antifouling film according to the present embodiment, and particularly shows a connection state between one end of a lifting wire and a joint fitting.
FIG. 7 is an explanatory diagram of a suspension type antifouling film according to the present embodiment, and particularly shows a state of a suspension wire held by a winch installed on a float carrier and guided by a guide roller. is there.
FIG. 8 is an explanatory diagram of the suspension type pollution prevention film of the present embodiment, and particularly shows the pollution prevention film that is folded in multiple stages in a zigzag manner by winding the lifting wire with a winch. FIG.
FIG. 9 is an explanatory diagram of a suspension type anti-pollution film according to the present embodiment, in particular, a view for showing a connecting portion and a joint rope (with eggplant ring).
FIG. 10 is an explanatory view of a conventional suspended pollution prevention film.
[Explanation of symbols]
1 Pollution prevention membrane (suspended pollution prevention membrane)
2 Wire guide (annular member)
6 Lifting wire 10 Curtain 10a One side (contamination prevention film)
10b Other side (pollution prevention film)
11 Connecting part 19 Upper weight chain (intermediate weight chain)
20 Intermediate weight chain (intermediate weight chain)

Claims (4)

A curtain for preventing the diffusion of pollution, an annular member disposed on one side of the curtain, arranged at predetermined intervals in the vertical direction and arranged in a plurality of rows, and inserted through the annular member, one end of the curtain A suspension comprising: a lifting wire connected to a lower end; and an intermediate weight chain disposed on the other side of the curtain and locked in the vertical direction in alignment with the arrangement of the annular members. Lower type anti-pollution membrane. The suspension type pollution control film according to claim 1, wherein the intermediate weight chain is locked from a substantially intermediate position between the annular members adjacent in the vertical direction to the lower annular member. The suspension type antifouling film according to claim 1 or 2, wherein the intermediate weight chains are arranged in a staggered pattern. 4. The curtain according to claim 1, further comprising a plurality of connecting portions that cross the anti-fouling film on the curtain, and the annular member is disposed at a substantially center of the adjacent connecting portions. The suspended pollution prevention film according to claim 1.

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