JP5676229B2 - Proximity device and approach method to pollution prevention frame provided on earth ship - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a proximity device and a proximity method for a pollution prevention frame provided on a clay ship, and more particularly to a device and a method for bringing a clay ship close to a pollution prevention frame provided in a water area provided on a clay ship. Is.

  As shown in FIG. 20, the dredging work is carried out by anchoring a pollution prevention frame 2 surrounding the dredging area in a rectangular shape at the front of the dredger 1 such as a grab dredger or a backhoe dredger with a rope 3 or the like. The docking vessel 1 is equipped with the clay vessel 4 moored by a rope 5 or the like on the side of 1 and arranged so that the vessel 4 is juxtaposed with the vessel 1 and the pollution prevention frame 2. For example, the bottom of the pollution control frame 2 is excavated by the grab bucket 7 of the lifting machine 6, the grab bucket 7 holding the excavated earth and sand is pulled up to the surface of the water, and the boom 8 of the lifting machine 6 is swung. Then, after the grab bucket 7 is moved to the earth ship 4, the grab bucket 7 is opened and the excavated earth and sand is loaded on the earth ship 4.

  Further, during the movement of the grab bucket 7, earth and sand are spilled from the gap between the grab buckets 7 and fall into the gap between the pollution prevention frame 2 and the ship 4 to generate pollution outside the pollution prevention frame. In order to prevent this, a sediment fall prevention plate 9 having a length of, for example, 2 m is provided on the edge 4a on the shore side of the earth transport ship 4 so as to protrude to the pollution prevention frame 2.

  However, since the ship hull is lowered with the loading of excavated earth and sand, when the dredger 1 and the earth ship 4 are fixed, a certain margin length is secured in advance to the rope. Because of the slack allowance, when the ship 4 is shaken by the influence of wind, tide level, etc., the distance between the pollution prevention frame 2 and the ship 4 may be, for example, 2 m or more, Even when the earth and sand fall prevention plate 9 is installed, the earth and sand from the grab bucket 7 falls into the gap between the pollution prevention frame 2 and the earth transport ship 4 and causes pollution outside the pollution prevention frame. There was a drawback.

  The present invention eliminates the above-mentioned drawbacks.

The proximity device to the pollution control frame provided on the earth ship according to the present invention includes a steel material having a desired length that is pivotable in the vertical direction by pivotally supporting the base on the side of the earth ship, and the steel material. The floating body of the pollution control frame installed in the water area is positioned between the earth ship and the steel material, and the earth material is moved relative to the earth ship by the steel material. until it is possible to draw the ship's side, the distal end portion of the steel is tilted downward, and wherein Rukoto is maintained in the pollution control frame and the earth luck vessels and approaches.

Moreover, on the shore side of the ship, the base part is pivotally supported, and a steel material having a desired length that can be tilted in the vertical direction, and the steel material is suspended downward at the tip part of the steel material. The proximity auxiliary member having a desired length and means for tilting the steel material, and the floating body of the pollution prevention frame installed in the water area is positioned between the earth ship and the proximity auxiliary member, and the proximity Until the tip of the steel material is tilted downward until the auxiliary member can be drawn closer to the side of the ship with respect to the ship, the pollution prevention frame and the ship are in close proximity. It is maintained, characterized in Rukoto to.

In addition, an earth and sand fall prevention plate is further provided on the shore side of the earth ship and covers the gap between the earth ship and the pollution prevention frame, and the distance between the earth ship and the steel material on the water surface is the earth and sand fall. only smaller than the projection length of the preventing plate, the tip portion of the steel material, characterized in Rukoto is tilted downward.

Further, a projecting member that protrudes outward and is fixed to the shore side of the ship is provided, and the base portion of the steel material is pivotally supported in the vertical direction at the tip of the projecting member, and the projecting length of the projecting member However, the length is longer than the width of the floating body of the pollution prevention frame, and the steel material is tilted until it hangs down.

In addition, the method of approaching the pollution prevention frame provided in the earth ship according to the present invention is a steel material having a desired length that is tilted in the vertical direction by pivotally supporting its base on the shore side of the earth ship. Tilt the tilting means by a desired amount, and place the floating body of the pollution prevention frame installed in the water area between the earth transport ship and the steel material, and the steel material is relative to the earth transport ship by the steel material. By attracting the ship to the ship side, the pollution prevention frame and the earth ship are kept close to each other.

  According to the present invention, since the pollution prevention frame and the earth transport ship can be maintained close to each other, the pollution prevention frame and the earth transport ship are not separated beyond the protection range of the sediment fall prevention plate. No pollution occurs outside the pollution prevention frame.

  In addition, even if the ship is shaken up and down relative to the floating body due to the influence of wind, tide level, etc., the floating body and the soil transport ship are not directly fixed with a rope or the like. There is no upward lifting force on the floating body, and the antifouling film suspended from the antifouling frame is not pulled and damaged.

  Also, loading the earth and sand into the ship will cause the steel material to tilt upward as the ship comes down, preventing the frame part from being submerged, and the outflow and diffusion of pollution outside the pollution prevention frame. To prevent that.

It is a front view for explanation of the 1st example and the 4th example of the proximity device to the pollution control frame provided in the earth carrier ship of the present invention. It is a top view for description of 1st Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth transport ship of this invention. It is a front view for explanation of the 1st example and the 4th example of the proximity device to the pollution control frame provided in the earth carrier ship of the present invention. It is a front view for explanation of the 1st example of the proximity device to the pollution control frame provided in the earth ship of the present invention. It is a top view for description of other examples in the 1st example of a proximity device to a pollution control frame provided in an earth ship of the present invention. It is a top view for description of other Example in the 1st Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth ship of this invention. It is a front view for description of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth transport ship of this invention. It is a top view for description of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth transport ship of this invention. It is a front view for description of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth transport ship of this invention. It is a front view for description of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth transport ship of this invention. It is a top view for description of other examples of the 2nd example of a proximity device to a pollution control frame provided in an earth ship of the present invention. It is a front view for description of other Example of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth ship of this invention. It is a front view for description of other Example of 2nd Example of the proximity | contact apparatus to the pollution prevention frame provided in the earth ship of this invention. It is a front view for explanation of a 3rd example of a proximity device to a pollution control frame provided in an earth ship of the present invention. It is a front view for explanation of a 3rd example of a proximity device to a pollution control frame provided in an earth ship of the present invention. It is a front view for explanation of the 4th example of the proximity device to the pollution control frame provided in the earth ship of the present invention. It is a front view for explanation of the 4th example of the proximity device to the pollution control frame provided in the earth ship of the present invention. It is a front view for explanation of the 4th example of the proximity device to the pollution control frame provided in the earth ship of the present invention. It is a front view for explanation of the 4th example of the proximity device to the pollution control frame provided in the earth ship of the present invention. It is an arrangement plan of a dredger, a pollution prevention frame, and an earth ship.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the proximity device to the pollution prevention frame provided on the clay ship in the first embodiment of the present invention pivots the base 10 a on the edge 4 a on the shore side of the clay ship 4. For example, it is composed of a rod-shaped steel material 10 having a length of 4 m, which can be tilted in the vertical direction, and a winch device 12 for operating the wire 11 connected to the tip portion 10 b of the steel material 10.

  Further, for example, two steel materials 10 are provided at a desired interval in the longitudinal direction of the earth ship 4.

  Reference numeral 13 denotes a column for changing the direction of the wire 11 provided between the tip portion 10b of the steel material 10 and the winch device 12.

  Reference numeral 14 denotes a sediment fall prevention plate having a protrusion length of, for example, 2 m, covering the gap between the clay ship 4 and the pollution prevention frame 2 provided on the shore side of the clay ship 4.

  Since the first embodiment of the present invention is configured as described above, as shown in FIG. 3, the winch device 12 is operated from the initial state where the tip portion 10b of the steel material 10 is above the water surface. The steel material 10 is tilted so that the floating body 2a of the pollution prevention frame 2 is positioned between the earth ship 4 and the steel material 10 by extending the wire 11, and due to the weight of the steel material 10, FIG. As shown in the drawing, the floating body 2a is pulled toward the side of the ship 4 relative to the ship 4 and the distance L between the ship 4 and the steel material 10 on the surface of the water is the drop of the earth and sand. The wire 11 is extended to tilt the steel material 10 downward until the distance L becomes 1 m, for example, until it becomes smaller than the protruding length of the prevention plate 14.

  In addition, the weight of the steel material 10 is a weight that can draw the floating body 2a to the side of the clay ship 4 relative to the clay ship 4 when the steel material 10 is tilted downward. .

  According to the first embodiment of the present invention, the floating body 2a is positioned between the steel material 10 and the earth ship 4 and the distance L between the earth ship 4 and the steel material 10 on the water surface is as described above. Since the steel material 10 is tilted until it becomes smaller than the projecting length of the earth and sand fall prevention plate 14, the pollution prevention frame 2 and the earth ship 4 can be kept in close proximity, and the earth and sand fall prevention plate 14 is protected. The pollution prevention frame 2 and the ship carrier 4 are not separated beyond the range length, and therefore, no pollution occurs outside the pollution prevention frame.

  Further, even if the above-mentioned ship lifts up and down relative to the floating body 2a due to the influence of wind, tide level, etc., the upward lifting force does not act on the floating body 2a. The antifouling film 2b suspended from the frame 2 is not pulled and damaged.

  Further, as shown in FIG. 1, the floating body 2a is positioned in a state where a distance L between the earth transport ship 4 and the steel material 10 on the water surface is opened by a desired amount. As shown in FIG. 4, even when the earth and sand ship 4 is lowered, the steel material 10 and the earth ship 4 on the water surface have a sufficient distance, and the floating body 2 a is connected to the steel material 10 and the steel material 10. It is prevented from being submerged by being pushed into the water by the ship 4 and preventing the pollution from flowing out and diffusing out of the frame.

  In addition, as shown in FIG. 5, you may connect the front-end | tip parts 10b and 10b of the said two steel materials 10 and 10 with the bar material 15. As shown in FIG. In this case, it is desirable that the steel materials 10 are tilted synchronously so that the steel materials 10 are not twisted.

  Further, as shown in FIG. 6, instead of fixing the earth and sand falling prevention plate 14 to the earth ship 4, for example, FRP made of FRP is formed in a frame formed by the two steel materials 10 and 10 and the bar material 15. The earth and sand fall prevention plate 16 may be fitted and fixed.

  In addition, in the said 1st Example, although the example which provided two steel materials 10 was given, you may make it provide one steel material 10 in the said ship 4 and make it tilt, and three or more are provided, You may make it tilt.

  In the second embodiment of the present invention, as shown in FIGS. 7 and 8, the base portion 10 a of the steel material 10 in the proximity device of the first embodiment can be tilted to the edge portion 4 a on the shore side of the clay ship 4. Instead of pivotally supporting, a protruding member 4b that protrudes outward in the horizontal direction and is fixed is provided on the edge portion 4a on the shore side of the ship 4 and is pivotally supported at the tip of the protruding member 4b so as to be tiltable in the vertical direction. To do.

  The protruding length of the protruding member 4b is longer than the width M of the floating body 2a and shorter than the protruding length of the earth and sand falling prevention plate 14.

  Since the second embodiment of the present invention is configured as described above, as shown in FIG. 7, the winch device 12 is operated from the initial state where the tip portion 10b of the steel material 10 is above the water surface. The steel material 10 is tilted so that the wire 11 is stretched and the floating body 2a of the pollution prevention frame 2 is positioned between the earth ship 4 and the steel material 10, and due to the weight of the steel material 10, FIG. As shown in the drawing, the floating body 2a is drawn relatively to the side of the ship 4 and then the wire 11 is extended until the steel material 10 hangs down as shown in FIG. Tilt.

  According to the second embodiment of the present invention, the floating body 2a is positioned between the steel material 10 and the earth ship 4 and the distance between the earth ship 4 and the steel material 10 on the water surface is projected. Since the protrusions of the member 4b are brought close to each other, the pollution prevention frame 2 and the earth ship 4 are not separated from each other beyond the protection range length of the earth and sand fall prevention plate 14, and therefore the pollution prevention is performed. No pollution occurs outside the frame.

  Further, even if the above-mentioned ship lifts up and down relative to the floating body 2a due to the influence of wind, tide level, etc., the upward lifting force does not act on the floating body 2a. The antifouling film 2b suspended from the frame 2 is not pulled and damaged.

  Further, as shown in FIG. 10, the floating body 2a is positioned with the distance between the earth ship 4 and the steel material 10 on the water surface being opened by the protruding length of the protruding member 4b. Even when earth and sand are loaded on the earth ship 4 and the earth ship 4 is lowered, there is a sufficient distance between the steel material 10 and the earth ship 4, and the floating body 2 a is formed by the steel material 10 and the earth ship 4. This prevents the water from being pushed into the water and submerged and prevents the pollution from flowing out and diffusing out of the frame.

  As shown in FIG. 11, as in the first embodiment, the tip portions 10b and 10b of the two steel materials 10 and 10 are connected to each other by a bar material 15, and the earth transport ship 4 is connected to the earth and sand falling prevention plate 14 as shown in FIG. For example, an FRP earth and sand fall prevention plate 16 is fitted and fixed in a frame formed by the two steel members 10 and 10 and the rod member 15, and the two protruding members 4b, For example, an FRP earth and sand fall prevention plate 18 may be fixed between 4b.

  Further, as shown in FIG. 10, when the steel material 10 is suspended, the wire 11 is located on the inner side (on the side of the earth ship 4) than the pivotal support portion 19 between the steel material 10 and the protruding member 4b. Then, from the state, when the wire 11 is shortened by the winch device 12 and the steel material 10 is raised, the steel material 10 is tilted inward as shown in FIG. There is a risk that it will not be possible to raise it.

  Therefore, instead of connecting the wire 11 to the tip portion 10b of the steel material 10, as shown in FIG. 13, the tip portion 10b of the steel material 10 has an inner tilt preventing member that extends in a direction perpendicular to the outside (sea side). 10c is fixed and connected to the tip of the inner tilt prevention member 10c so that the wire 11 is always positioned outside the pivotal support portion 19 between the steel material 10 and the protruding member 4b.

  Thereby, when the steel material 10 is raised, the steel material 10 is not tilted inward.

  In addition, instead of using the inner tilt prevention member 10c, other steel material inner tilt prevention means such as projecting the top of the support column 13 holding the wire 11 to the sea side, the wire 11 is always the above You may make it locate in the outer side rather than the pivotal support part 19 of the steel material 10 and the said protrusion member 4b.

  In the third embodiment of the present invention, as shown in FIG. 14, the tip portion 10b of the steel material 10 of the proximity device to the pollution prevention frame provided on the earth ship in the first embodiment is pivotably supported. A proximity auxiliary member 17 such as a weight pipe or a weight chain having a desired length that hangs downward is provided.

  Since the third embodiment of the present invention is configured as described above, as shown in FIG. 14, the floating body 2 a and the ship 4 are attracted to the floating body 2 a at the tip portion 10 b of the steel material 10. Even if it is separated to a certain distance, the floating body 2a can be positioned between the earth ship 4 and the proximity assisting member 17, and if the steel material 10 is tilted by extending the wire 11, the proximity assisting is achieved. Due to the weight of the member 17, the floating body 2 a can be drawn closer to the side of the ship 4 as shown in FIG. 15.

  Then, the steel material 10 is further tilted, and, as in the first embodiment, until the distance between the earth ship 4 and the steel material 10 on the water surface becomes smaller than the protruding length of the sediment fall prevention plate 14, for example, The wire 11 is extended until the distance becomes 1 m, and the steel material 10 is tilted downward.

  In the third embodiment of the present invention, as in the first embodiment, the pollution prevention frame 2 and the earth ship 4 can be kept in close proximity, so that the protection range length of the earth and sand fall prevention plate 14 is longer than the protection range length. In addition, the pollution prevention frame 2 and the ship carrier 4 are not separated from each other, and therefore no pollution occurs outside the pollution prevention frame.

  Even when the tip portion 10b of the steel material 10 is above the water surface, the proximity auxiliary member 17 causes the floating body 2a of the pollution prevention frame 2 to be relatively moved with respect to the soil transport ship 4 by the soil transport ship. It can be drawn to the 4th side.

  Further, the floating body 2a can be drawn even when the floating body 2a and the earth ship 4 are separated to a distance where the floating body 2a cannot be drawn by the tilted tip portion 10b of the steel material 10. .

  Further, similarly to the first embodiment, the floating body 2a is positioned in a state where a distance between the soil ship 4 and the steel material 10 on the water surface is opened by a desired amount. Even if the earth ship 4 is lowered by loading the earth and sand, there is a sufficient distance between the steel material 10 and the earth ship 4 on the water surface, and the floating body 2a is pushed into the water by the steel material 10 and the earth ship 4 Therefore, it is possible to prevent the pollution from flowing out and diffusing out of the frame.

  In addition, as in the second embodiment, a protruding member 4b that protrudes and is fixed outwardly in the horizontal direction is provided on the edge 4a on the shore side of the ship 4 and the steel material 10 is provided at the tip of the protruding member 4b. The base portion 10a is pivotably supported in the vertical direction, and the proximity auxiliary member 17 is pivotally supported at the tip portion 10b of the steel material 10 so that the wire 11 is extended and tilted until the steel material 10 hangs down. You may squeeze it.

  In the fourth embodiment of the present invention, as shown in FIG. 3, in the proximity device to the pollution prevention frame provided on the earth ship in the first embodiment, the tip portion 10 b of the steel material 10 is above the water surface. From the initial state, the winch device 12 is operated to extend the wire 11, and the steel material 10 is tilted so that the floating body 2a of the pollution prevention frame 2 is positioned between the earth ship 4 and the steel material 10. The weight of the steel material 10 causes the floating body 2a to be drawn to the side of the ship 4 as shown in FIG. 1, and as shown in FIG. The wire 11 is stretched to tilt the steel material 10 downward until the floating body 2a is sandwiched between the steel material 10 and the earth ship 4.

  Moreover, when the floating body 2a is sandwiched between the steel material 10 and the earth transport ship 4, when the earth and sand is loaded onto the earth transport ship 4 by a dredger, the earth transport ship 4 is lowered, and as shown in FIG. The floating body 2a is pushed into the water by the steel material 10 and the ship 4 and is submerged. And there exists a possibility that the pollution in the said pollution prevention frame 2 may flow out and spread | diffuse out of the frame from the upper part of the said floating body 2a which was submerged. Accordingly, as shown in FIG. 18, the sand carrier 4 is loaded with earth and sand by a dredger, and the steel material 10 is tilted upward as the earth ship 4 is lowered to prevent the floating body 2a from being submerged. , To prevent the pollution from flowing out and spreading outside the frame.

  In the fourth embodiment of the present invention, as in the first embodiment, the pollution prevention frame 2 and the earth ship 4 can be kept in close proximity, so that the protection range length of the earth and sand fall prevention plate 14 is longer than the protection range length. In addition, the pollution prevention frame 2 and the ship carrier 4 are not separated from each other, and therefore no pollution occurs outside the pollution prevention frame.

  Further, since the steel material 10 is tilted upward as the earth ship 4 is lowered, the floating body 2a can be prevented from being submerged, and contamination can be prevented from flowing out and diffusing out of the frame.

  In addition, as shown in FIG. 16, from the state where the floating body 2a is sandwiched between the steel material 10 and the clay ship 4, the clay ship is shaken by the influence of wind, tide level, etc., and the floating body 2a As shown in FIG. 19, the upward lifting force does not act on the floating body 2 a even if it is moved up and down relatively, so that the anti-contamination film 2 b suspended from the anti-contamination frame 2 is pulled. There will be no damage.

  If a proximity auxiliary member 17 such as a weight pipe or a weight chain having a desired length hanging downward is pivotally supported on the tip portion 10b of the steel material 10, the same as in the third embodiment. Even when the tip portion 10b of the steel material 10 is above the water surface, the proximity auxiliary member 17 causes the floating body 2a of the pollution prevention frame 2 to be relatively moved with respect to the soil ship 4 by the soil ship 4. Even if the floating body 2a and the earth transport ship 4 are separated to a distance at which the floating body 2a cannot be attracted by the tip portion 10b of the steel material 10 tilted, the above-mentioned floating body 2a can be pulled to the side. It becomes possible to draw the floating body 2a.

DESCRIPTION OF SYMBOLS 1 Dredger 2 Pollution prevention frame 2a Floating body 2b Pollution prevention film 3 Rope 4 Earth carrier 4a Edge 4b Projection member 5 Rope 6 Lifting machine 7 Grab bucket 8 Boom 9 Sediment fall prevention plate 10 Steel material 10a Base 10b Tip 10c Inward tilt prevention Member 11 Wire 12 Winch device 13 Post 14 Sediment fall prevention plate 15 Bar 16 Sediment fall prevention plate 17 Proximity auxiliary member 18 Sediment fall prevention plate 19 Pivot

Claims (5)

A floating body of a pollution control frame installed in the water area is composed of a steel material of a desired length that can be tilted in the vertical direction by pivotally supporting its base on the shore side of the ship, and means for tilting this steel material. The tip of the steel material is tilted downward until the steel material is positioned between the steel carrier and the steel material, and the steel material can be drawn toward the soil carrier relatively to the steel carrier. Te, proximity device to pollution frame provided to the soil luck ship, characterized in Rukoto is maintained in the pollution control frame and the earth luck vessels and approaches. A steel material of a desired length that is pivotably supported in the vertical direction by pivotally supporting the base portion on the shore side of the ship, and a desired suspension that is suspended downward at the tip of the steel material. A proximity auxiliary member having a length and a means for tilting the steel material, the floating body of the pollution prevention frame installed in the water area is positioned between the earth ship and the proximity auxiliary member, and the proximity auxiliary member The tip of the steel material is tilted downward until the anti-pollution frame and the soil ship are kept close to each other until the ship can be drawn toward the ship side relatively with respect to the ship. by proximity devices to pollution frame provided to the soil luck ship, characterized in Rukoto. An earth and sand fall prevention plate is further provided on the shore side of the earth vessel and covers the gap between the earth vessel and the pollution prevention frame, and the distance between the earth vessel and the steel material on the water surface is the earth and sand fall prevention plate. just smaller than the projection length, the proximity device to claim 1 or pollution frame provided two soil luck ship according distal end of the steel material, characterized in Rukoto is tilted downward. Provided on the shore side of the ship carrier is a projecting member that projects outward and is fixed, and the base of the steel material is pivotally supported in the vertical direction at the tip of the projecting member, and the projecting length of the projecting member is a floating body width longer than the length of the pollution control frame, proximity to claim 1 or 2 or 3 provided the soil luck ship according pollution Control frame, characterized in that said steel is tilted to droop apparatus. A steel body of a desired length, which is tilted in the vertical direction with its base pivoted, is tilted by a desired amount on the shore side of the ship, and a floating body of a pollution control frame installed in the water area. The pollution control frame and the soil ship are brought closer by being positioned between the earth ship and the steel material and being drawn toward the soil ship side relative to the soil ship by the steel material. A method for approaching a pollution control frame provided on an earth ship, which is maintained in a state .

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