JP3571366B2 - How to tow wide sheet on water - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a method of towing a wide sheet to a predetermined position on the water surface and laying a waterproof sheet on a water floor.
[0002]
[Prior art]
When a wide sheet is floated near the surface of the water, towed and transferred to the required position, and laid on the bottom of the water, the required number of floats (floats), synthetic resin foam, etc. for fisheries have been attached to the required position. .
[0003]
[Problems to be solved by the invention]
At the required number of floats, such as fishery floats and synthetic resin foam lump, attached to the upper surface of the sheet at the required position, and the wide sheet floated near the water surface to the required position on the water surface when towing towing, the towing direction Tow while applying tension in the direction perpendicular to the tow, but it is difficult for the work to continue applying tension to the stretching rope in the direction perpendicular to the progress of towing, and when the tension is weakened, the sheet between the floats hangs down under its own weight, and There was a problem that towing was hindered due to a collision with the ship or an increase in water resistance.
[0004]
[Means for Solving the Problems]
Therefore, in the present invention, the wide elongated sheet is fixed to the stretched air column over the entire width in the direction in which the sheet is pulled and the width direction perpendicular thereto, so that the wide elongated sheet is not relaxed. Is towed without sinking into the water.
At this time, for fixing the stretched air column and the wide and long sheet, a method of fixing the stretched air column and the fixing tool adhered to the wide and long sheet at a plurality of locations with a string is preferable.
The stretched air column is made of a rubber sheet or synthetic resin sheet whose central layer is reinforced with fiber, and is a cylindrical airtight body with both ends closed, and one or more air-sealing and discharging valves. Can be exemplified.
Also, in order to tow the wide long sheet so that it does not sink in the water, as in the conventional case, after pulling the wide long sheet to the surface of the water , the wide long sheet was moored on the waterside in a width direction perpendicular to the towing direction. The wide and long sheet may be towed by a rope or a rope equivalent while maintaining the tension in the width direction.
In this case, a method is preferable in which a metal or plastic pipe is fixed to the four-direction ends of the wide and long sheet with a plurality of fasteners, and a rope is tied to the metal or plastic pipe to tow while maintaining tension.
Also, when the wide and long sheets were stacked on the ground near the waterside, and towed to a predetermined position on the water surface with a chillfall or winch provided on the ship on the opposite shore or anchored, the tow was stacked on the ground near the waterside. If air is blown from the air blower of the air blower just below the wide and long sheet and the wide and long sheet is lifted and towed, the tow can be smoothly pulled from the shore.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of a wide sheet. A wide sheet is cut in the longitudinal direction with a sheet A of a required length, and a longitudinal end face (not shown) of a width end of the required length sheet and a longitudinal end face of another required length sheet are pressed. Adhesion is performed by heat vulcanization or fusion processing, and this operation is repeated several tens of times to produce a long sheet having a required size and width.
The wide end 1 is formed by successively adhering the adhesive end surface portions 28 of the necessary size wide long sheet to the adhesive end surface portions of the other required size wide long sheets by press-heating vulcanization or fusion processing. Further, the wide and long sheet 2 is formed by press-vulcanizing or fusing the bonding end face 3 of the wide sheet 1 and the bonding end face 3 of another wide sheet. The sheet used in the present invention means a rubber sheet, a synthetic resin sheet, a nonwoven fabric sheet, and a fiber sheet.
[0006]
Figure 2 is a schematic cross-sectional view for explaining the towing of wide sheet to the water surface or underwater wide continuous sheet 2 adhered to the plurality long. The wide and long sheets 2 are stacked and stored on an air blowing device (turbo fan) 4 having air blower tubes 26 installed at equal intervals in advance. Then, the rope 9 fastened to a plurality of hooks (not shown ) fixed to a plastic pipe 11 (see FIG. 9) also serving as a buoyancy float fixed to the leading end of the wide and long sheet is attached to the opposite side of the shore. Tow with the chillfall or winch provided on the anchored vessel.
Since the towing width is as wide as about 100 US, it is difficult to tow as it is dragged as it is. In order to solve this problem, an air blowing device (turbo fan) in which a plurality of air blower tubes 26 are directly connected at regular intervals under the wide and long sheet 2 on the ground and on the ground is used. By providing a gap by the blast air B between the wide and long sheet and the concrete on the ground, it became possible to smoothly tow.
In order to maintain the buoyancy of the wide elongated sheet 2 on the water surface, a plurality of stretcher-tensioned air columns 14 according to the present invention are fixed on the ground in advance to fill the wide width of the wide elongated sheet 2 in advance. And has a stretching effect to prevent the wide and long sheet from loosening in the width direction and hindering towing and towing . The air column 14 is filled with air, so that the wide and long sheet 2 can be easily towed and towed on the water surface.
[0007]
FIG. 3 is a schematic cross-sectional view showing the relationship between the air blowing pipe 26 directly connected to the air blowing device (turbo fan) and the wide and long sheet 2. An air buffer tube 27 is fastened to both sides of an air blower tube 26 directly connected to an air blowing device (turbo fan) on the ground by a tying string 30 to actively maintain the air gap.
[0008]
FIG. 4 is a schematic plan view showing a wide and long sheet and a means for holding the wide and long sheet in a tensioned state. A plurality of chill-falls or winches provided with a plurality of ropes 29 gathered at a plurality of rope fastening bands 10 at the towing end of the wide and long sheet 2 fastened at the tip of the towing rope 9 and the other end provided to a ship on the opposite shore or anchored. When the tow is towed with no tension, the wide and long sheets between the floats tend to loosen and gather at one place due to the weight of the wide and long sheets between the floats, increasing the water resistance and making smooth towing impossible. Become.
In order to specify a necessary place and maintain the tension state of the wide and long sheet 2, the rope fastening bands 10 are gathered at the left and right (vertical) ends in the direction of towing and towing to form a gathering wheel. 29. The tension is maintained by adjusting the length by the suspension wheel 8 and the plurality of suspension ropes 7 installed on the tension holding pile 6 so as not to be loosened. As the vehicle is towed, the left and right suspension wheels 8 are manually inserted into the next pile 6. A suspension rope storage reel 31 is provided on the suspension wheel 8 of the pile 6 on the ground in the towing direction, so that the wide and long sheet 2 can be towed.
The wide and long sheet 2 has two or three sets (plural sets) of the end portions in the pulling direction adhered to each other on the water surface or in the water . Therefore, the tension holding stake 6 is provided with a step to form two or three straight lines. At regular intervals. In the storage area where the wide and long sheets 2 are stacked, a rope fastening band is fixed to the end of the rear end of the wide and long sheet 2 in the towing direction, and the length of the suspension rope 7 to the work place is calculated. It is fastened to a suspension rope storage reel laid on the suspension wheel 8.
[0009]
FIG. 5 is a vertical or horizontal cross-sectional view when the conventional float (float) 24 is vertically and horizontally arranged on the upper surface of the wide sheet 2 and the wide sheet 2 is floated near the water surface. . At this time, if the required tension is applied to the wide and long sheet 2 in the vertical and horizontal directions, the state of FIG. 5 can be maintained in both directions, but when the tension in either the vertical or horizontal direction is lost, the float in that direction is lost. The wide and long sheet 2 between the floats sinks by its own weight, and the distance between the floats is reduced, as shown in FIG.
In this state, when the entire floating sheet is pulled in the direction perpendicular to the plane of FIG. 6, it becomes difficult to tow, for example, when the resistance of water becomes extremely large, or when the water depth is shallow, it touches the bottom of the water. It is also difficult to lay the sediment on the water bottom in a certain relaxed state.
[0010]
FIG. 7 is a perspective view of a wide and long sheet 2 floated near the water surface using conventional floats (floats) in a vertical and horizontal arrangement. FIG. 8 is a sectional view in the towing and towing direction when the stretched air column 14 according to the present invention is used instead of the conventional float .
[0011]
FIG. 9 shows that it is impossible to release the tension in the right angle direction when the wide long sheet is towed in the direction of the arrow, so that the sheet in the direction is prevented from sagging and the towed state is maintained. FIG. 4 is a schematic plan view showing a situation in which a stretched air column is arranged in a direction perpendicular to the direction. In FIG. 9, a wide sheet 2 is formed by extending a plurality of wide sheets 1 (not shown). As the wide sheet, a sheet having a width of not more than 12 US and a length of 50 to 200 US is used, which is determined according to the shape and size of the final wide sheet.
In addition to the buoyant stretched air column, a plurality of metal or plastic pipes 11 are attached to the end of the sheet towing portion of the wide and long sheet 2 in the towing direction, and both ends and the rear end thereof. 13 is fixed. Since the entirety is pulled, the area of the fastener 13 is increased to make the adhesive firm. Also, a plurality of plastic foams 12 are fixed to improve the buoyancy of the pipe.
The tow rope 9 is towed by a plurality of chillfalls or winches provided on the opposite shore or anchored ship. At the time of towing and towing, the following wide and long sheet 2 is made to follow while applying tension so as not to be loosened. A buoyant metal or plastic pipe 11 is fixed to the end of the wide elongated sheet 2 in the leftward and rightward (vertical) directions with respect to the towing and towing direction with a fastener 13 . It is also possible to use a plurality of pipes 11 having a length of about 10 to 30 U. A plurality of rope fastening bands 10 are tied to the metal or plastic pipes 11 at the left and right ends of the wide and long sheet 2 in the towing direction. In summary, the tension holding pile 6 in the left direction and the right direction is fixed while moving, and the wide sheet 2 is held in a tension state as much as possible. Also, the metal or plastic pipe 11 is fixed to the end of the rear end of the wide long sheet in the towing and towing direction with a fixing device 13, and a tension rope holding reel 6 attached to the tension holding pile 6 on the ground is used. Corresponds to towing and towing.
Thereby, the tension of the wide sheet is maintained in the four directions of left, right, front and rear. In the left-right direction, since the tension cannot be held while moving from the tension holding stake 6 to the next stake, there is a possibility that a slack may occur in the left-right direction. The stretched air column 14 is fixed to the wide and long sheet 2 by a stretcher air column fixing device (pooler) 15 in a direction (lateral direction) perpendicular to the direction, and the stretched air column 14 and the other stretched air column 14 are fixed. Are connected by a stretcher-tensioned air column connector 16 to maintain buoyancy and prevent sinking of the wide and long sheet 2 into the sea due to slack.
The stretched air column 14 is towed above the water surface or into the water and filled with air before towing. The whole wide and long sheet is always kept in tension without being relaxed by the surrounding pipe framework and the lateral stretched air column 14, so that it can be easily towed on the water surface or in the water.
[0012]
FIG. 10 is a perspective view showing an example of the arrangement of the stretched air columns 14 for preventing the wide and long sheet 2 of the present invention from sagging. As shown in FIG. 9, it is possible to prevent sagging under tensionless surroundings by simply arranging the stretched air columns 14 in the traction direction and the vertical direction (width direction), but in some cases, in addition to these, As shown in FIG. 10, a stretched air column can be installed in an oblique direction to further stabilize . As described above, the stretched air column 14 of the present invention plays two roles of imparting buoyancy to a wide and long sheet and preventing sagging.
[0013]
FIG. 11 is a schematic sectional view of a stretched air column. The stretched air column 14 is made of a fiber-reinforced rubber or synthetic resin bag. The length is about 5 to 10 US, and a diameter that can maintain buoyancy is selected. The end 19 of the air column 14 is pressurized, vulcanized or fused to maintain airtightness, but may be bent as shown in FIG. The stretched air column 14 and the other stretched air column 14 fasten the end bent portion 5 and the other end bent portion with the connecting tool 16. The stretched air column 14 is fixed to a wide and long sheet at a plurality of locations with a fixing tool 15.
[0014]
FIG. 13 is a developed plan view of a puller (stretched air column fixing device: hereinafter referred to as a puller) 15, and FIG. 14 is an assembled view of the puller 15. The end portion 5 and the other end portion 5 are firmly adhered to the wide and long sheet 2 by the adhesive portion 23, and the end portion 5 and the other end portion 5 are fastened by a string passed through the string through hole 22.
[0015]
The perimeter of the wide elongate sheet is tensioned from four directions of front and rear and left and right (vertical direction) of the direction in which the wide elongate sheet is towed (three directions of a plurality of chill-falls or winches and a tension holding pile), In the towing direction and the lateral direction (vertical direction and lateral direction of the towing direction) of the wide and long sheet, the buoyancy and the stationary state of the wide and long sheet can be determined by connecting the stretched air columns.
[0016]
【The invention's effect】
As is apparent from the above description, according to the present invention, a wide long sheet and another wide long sheet are towed and towed simultaneously in four directions ( a plurality of chillfalls or winches provided on two opposite shores or anchored ships). (Tensions are provided in three directions.) Tension is applied by applying tension to maintain tension in the vertical direction of the towing direction and, if necessary, to prevent buoyancy and sagging during towing by connecting stretched air columns in the towing direction. Since the fixed position can be determined, the positioning of the bonding between the wide and long sheet and the bonding end of the other wide and long sheet can be easily performed, and the positioning for laying on the water bottom can be accurately performed.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a wide sheet.
FIG. 2 is a schematic cross-sectional view for explaining towing and towing of a wide and long sheet above or below the water surface.
FIG. 3 is a schematic sectional view showing the relationship between a perforated air blower tube directly connected to a turbofan and a wide and long sheet.
FIG. 4 is a schematic plan view showing a means for maintaining a tension state of a wide and long sheet.
FIG. 5 is a sectional view of a conventional floating sheet using a float and a float arrangement line.
FIG. 6 is a cross-sectional view showing a slack of a conventional float array line using a float.
FIG. 7 is a perspective view showing a slack of a conventional seat using a float.
FIG. 8 is a cross-sectional view of an air column line using the stretched air column of the present invention.
FIG. 9 is a schematic plan view showing a tensioned state of the wide and long sheet of the present invention during towing and towing.
FIG. 10 is a perspective view of a wide and long sheet using a stretched air column according to the present invention.
FIG. 11 is a schematic sectional view of a stretched air column according to the present invention.
FIG. 12 is a schematic cross-sectional view showing the hermetic bending of an end portion of the stretched air column according to the present invention.
FIG. 13 is a developed plan view of the puller.
FIG. 14 is an assembled perspective view of a puller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wide sheet 2 Wide long sheet 3 Wide sheet adhesion end face 4 Air blowing device (turbo fan)
5 Stretched air column end bent portion 6 Tension holding pile 7 Suspended rope 8 Suspended wheel 9 Tow rope 10 Rope fastening band 11 Metal pipe or plastic pipe (with buoyancy float)
12 Plastic foam 13 Pipe fastener 14 Stretched air column 15 Stretched air column fixture (Pooler)
DESCRIPTION OF SYMBOLS 16 Extensor air column connection tool 17 Hook 18 Air valve 19 Extensor air column end 20 Extensor air column end fastening tool 21 Wide and long sheet adhesive end face 22 String through hole 23 Puller rubber sheet adhesive 24 Float (Conventional type)
25 Float fixing device 26 Air blower pipe 27 Air buffer pipe 28 Necessary dimension width long sheet adhesive end face part 29 Traction rope gathering wheel 30 Lacing string 31 Suspended rope storage reel 32 Winch or chill fall A Required dimension length sheet B Blast air S Underwater

Claims (4)

When the wide sheet is stacked on the ground at the water's edge and pulled and pulled to a predetermined position on the water surface by a chillfall or a winch provided on a ship on the opposite shore or anchored, the direction in which the wide sheet is towed. And, over the entire width in the width direction perpendicular to this, a plurality of stretched air columns are connected and fixed to prevent the wide long sheet from relaxing, and the wide wide sheet is towed without sinking in water. in that牽引曳ocean-going way,
A method of towing and towing, characterized in that air is blown from an air blowing pipe of an air blowing device directly below the wide and long sheet stacked on the ground near the water, and the wide and long sheet is pulled and towed while floating. The wide continuous sheet, in a direction oblique to the direction of the traction, traction towed method of claim 1 Symbol mounting, characterized in that fixed to Tsugiren multiple Shinshibari air column. The stretched air column is a closed airtight body in which both ends of a cylindrical rubber sheet or a synthetic resin sheet are pressurized, vulcanized or fused to form a closed airtight body. The end bent portion is formed by fixing, and the string passed through the string through hole of the fixing tool adhered to the wide sheet is connected to the end bent portion of one stretched air column and the other stretched portion. 3. The method of towing and towing according to claim 1 or 2 , wherein the fastening is performed by passing through the end bent portion of the tension column. The towing method according to claim 3 , wherein the stretched air column has a sheet whose central layer portion is reinforced with a fiber.

Images