JP2010275854A - Underwater placing boat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To place a large amount of land-fill material while suppressing water contamination to a minimum extent. <P>SOLUTION: An angle of oscillation of a tube 30 is adjusted, and when the lower end of a cylindrical member 54 reaches a sea bed B, the lower end of the cylindrical member 54 sinks into floating mud deposited on the sea bed B. The land-fill material is pushed ahead inside the tube 30 by a screw blade 34 in a cohesive state. The land-fill material pushed out of a lower end 3010 of the tube 30 hits a rectifying member 52, and it is directed toward the inside of the cylindrical member 54. Then the land-fill material hits the inside of the cylindrical member 54, whereby the inside of the cylindrical member 54 is filled upward from below. Further, the land-fill material with attenuated momentum (flow rate) overflows from the upper end of the cylindrical member 54 to the outside of the same, and the land-fill material with attenuated momentum (flow rate) is sequentially deposited on the sea bed B around the cylindrical member 54 in a spreading manner, so that the land-fill material may be placed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides an underwater placing method and underwater placement in which landfill material obtained by adding a solidifying material such as cement to dredged soil is submerged in a landfill without separating the dredged sand and the solidified material. Related to equipment and underwater launcher.

  A solidified material such as cement is added to dredged soil, and the one that has not been solidified can be used as a landfill material.As a method of placing such a landfill material in water, (1) Construction method in which landfill material is placed in water via a tremmy pipe or chute. (2) The placement port at the lower end of a vertically suspended casing is always buried in the existing landfill at a certain depth. In general, a construction method (for example, Japanese Patent Publication No. 6-63214 and Japanese Patent Publication No. 6-63215) in which a landfill material is driven in water is common.

However, when the landfill material is driven in water by the conventional method described above, there are the following problems.
In the construction method using tremmy pipes and chutes described in (1) above, the tremmy pipes and chutes are filled with water, and the dredged material and solidified material are separated while the landfill material reaches the bottom of the water. There was a problem that quality could not be ensured and water pollution occurred.
In the construction method (2) in which the casting port at the lower end of the vertically suspended casing is always embedded in the existing landfill at a certain depth, the lower end of the casing is always embedded in the existing landfill. Therefore, it is possible to place only a small amount of the existing landfill that has been previously placed, and to push a large amount of earth and sand in a short time.
That is, when a large amount of earth and sand is placed in a short time, the vibration at the lower end of the casing increases, and the momentum (flow velocity) of the landfill material flowing out from the lower end of the casing increases. Therefore, the lower end of the casing disturbs the surrounding floating mud and the previously disposed landfill, and the landfill material hits the bottom of the water and flows out vigorously outward in the radial direction of the casing. The landfill material is spread over a wide area on the bottom of the water as it is exposed to the water. As a result, water pollution occurs, and it is unclear where the landfill material was placed.
The present invention has been devised in view of the above circumstances, and the object of the present invention is to ensure the quality of the landfill material and to drive a large amount of landfill material while minimizing water pollution. It is to provide an underwater driving method, an underwater driving tool, and an underwater driving boat.

In order to achieve the above object, the underwater placing method according to the present invention includes an open top and bottom at the lower end of the tubular body, the upper end being positioned higher than the distal end of the tubular body, and the lower end being lower than the lower end of the tubular body. A cylindrical member that surrounds the periphery of the lower end portion of the tubular body, is placed below the lower end of the tubular body, hits the landfill material that flows out of the lower end, and A rectifying member for directing the flow toward the inner surface of the cylindrical member is provided, the lower end of the cylindrical member is attached to the bottom of the water, and the landfill material flowing out from the lower end of the tubular body is passed through the rectifying member of the cylindrical member. The tubular member is abutted against the inner surface, and the momentum of the flow of the landfill material is attenuated inside the tubular member to fill the interior of the tubular member with the landfill material, and the outer peripheral surface of the tubular body and the tubular member The landfill is made to overflow the landfill material with attenuated momentum from the upper end of the annular space formed by the inner peripheral surface of Characterized in that was to be pouring onto the bottom of the water.
Further, the underwater driving tool of the present invention includes a rectifying member and a cylindrical member, and the rectifying member hits a landfill material that faces the lower end of the tubular body and flows out from the lower end, and is landfilled. The tubular member is attached to the tubular body so that the material is directed radially outward of the tubular body. The cylindrical member is open in the vertical direction, the upper end is positioned higher than the lower end of the tubular body, and the lower end is the tube. It is located below the lower end of the body and is attached to the tubular body so as to surround the lower end portion of the tubular body and the periphery of the rectifying member.
The underwater driving ship of the present invention includes a hull having a length in the front-rear direction and an underwater driving apparatus provided in the hull, and the underwater driving apparatus extends linearly and extends in the hull. A tube body having a long length corresponding to the longitudinal length of the tube body, a hopper provided at one end of the tube body to which a landfill material is charged, and being rotatably disposed and rotated inside the tube body A screw blade that pushes the pipe body in a state where the landfill material is in close contact, a drive unit that rotationally drives the screw blade, and an underwater driving tool provided at the other end of the pipe body, The length direction of the hull is arranged in the front-rear direction of the hull, and the one end side is coupled to a portion near the front or rear of the hull so as to be able to swing up and down to swing the tube up and down. Dynamic driving means is provided, and the underwater driving tool includes a rectifying member and a cylindrical member. The straightening member is attached to the pipe body so as to face the lower end of the pipe body and hit the landfill material flowing out from the lower end so that the landfill material is directed radially outward of the pipe body. The cylindrical member is open at the top and bottom, the upper end is positioned higher than the other end of the tubular body, and the lower end is positioned below the other end of the tubular body, and the other end portion of the tubular body and It is attached to the tube so as to surround the flow regulating member.
Further, in the underwater driving ship of the present invention, the swing driving means is pulled out from the winch, the winch disposed on the hull and wound with the wire, the wire guide portion provided on the outer edge of the hull, and the winch. The wire is connected to the tube body through the wire guide portion, and the tube body is disposed with its length direction directed in the front-rear direction of the hull, and the one end side of the hull. The guide part is provided on the other of the front part and the rear part of the hull, and is coupled to one of the front part and the rear part so as to be swingable up and down.

  According to the present invention, the quality of the landfill material can be ensured, and a large amount of landfill material can be reliably placed in a short time while suppressing water pollution.

It is a top view of an underwater driving vessel. It is a front view of the underwater placing ship in the state where the landfill material is placed underwater. It is a front view of an underwater driving device. It is a top view of an underwater driving device. It is a front view at the time of movement of an underwater driving vessel. (A) is a cross-sectional front view of the underwater driving tool, and (B) is a plan view thereof. It is explanatory drawing at the time of placing a landfill material using an underwater placing tool. (A) is a cross-sectional front view of an underwater driving tool according to another embodiment, and (B) is a plan view of the same. (A) is a cross-sectional front view of an underwater driving tool according to another embodiment, and (B) is a plan view of the same. It is explanatory drawing of the positional relationship of an underwater driving ship, a solidification processing ship, a solidification material plant ship, and a soil carrier ship.

Hereinafter, the underwater driving method of the present invention will be described together with the underwater driving tool and the underwater driving ship according to the attached drawings.
FIG. 10 is an explanatory diagram of the positional relationship among the underwater driving ship, the solidification processing ship, the solidification material plant ship, and the earth transporting ship.
As shown in FIG. 10, for example, an underwater driving ship 12, a solidification processing ship 14, and a solidification material plant ship 16 are arranged on the sea via anchors, and in FIG. 10, a symbol R indicates an anchor rope.
The dredged sand is transported to the solidification processing ship 14 from the ship carrier 18, the cement milk produced by the solidification plant ship 16 is supplied to the solidification processing ship 14, and the dredged sand and the cement milk are stirred and mixed in the solidification processing ship 14. It is considered as landfill material. Then, the landfill material is pumped to the underwater placement ship 12 by air through the offshore pipe H, and is placed on the seabed by the underwater placement ship 12.

FIG. 1 is a plan view of the submerged vessel, FIG. 2 is a front view of the submerged vessel with the landfill material being submerged, FIG. 3 is a front view of the submerged device, and FIG. FIG. 5 is a plan view of the installation apparatus, and FIG.
As shown in FIG. 1, the underwater vessel 12 includes a hull 20, and the hull 20 is separated from a cyclone 22 that separates air from landfill material that is pressure-fed via a marine pipe H, and the air. A mud storage tank 24 for storing the landfill material, an underwater placing device 26 for placing the landfill material supplied from the mud tank 24 underwater, and a swing drive means for swinging the underwater placement apparatus 26 up and down. 28.
The hull 20 is formed in a rectangular shape in plan view in which the length in the front-rear direction is larger than the width in the left-right direction. In FIG. 1, reference numeral 2002 denotes a ship-feeding winch that unwinds and feeds the anchor rope R; Indicates.

The underwater driving device 26 is disposed on a side portion of the hull 20 that is located at an end portion in the left-right direction of the hull 20.
The underwater driving device 26 includes a pipe body 30 having a long length corresponding to the longitudinal length of the hull 20, a hopper 32 provided at one end of the pipe body 30 to which a landfill material is charged, and the inside of the pipe body 30. A screw blade 34 that pushes the inside of the tubular body 30 in a state where the landfill material is in close contact by rotating and a drive unit 36 that is provided on one end side of the tubular body 30 and rotationally drives the screw blade 34. The underwater driving tool 50 is provided at the other end (tip or lower end) of the tube body 30.

The tubular body 30 extends linearly and is supported by the hull 20 so as to be swingable as will be described later, and is provided at the distal end of the tubular body main body 3002 via a bent portion 3004. When the tubular body main body 3002 is oriented horizontally, the tubular body tip 3006 extends linearly obliquely downward from the bent portion 3002.
The pipe body 30 has a long length corresponding to the front-rear length of the hull 20, and the length direction thereof is arranged in the front-rear direction of the hull 20. In this case, the length of the tubular body 30 may be longer than the front-rear length of the hull 20, or may be shorter or substantially the same, but in short, the length of the tubular body 30 is the same as that of the hull 20. It has a sufficiently long length as compared with the front and rear lengths.
In the present embodiment, two tube bodies 30 are provided side by side so as to extend in parallel with each other, screw blades 34 are provided in each tube body 30, and screws are provided to the tips of each tube body main body 3002. The blades 34 extend.

The hopper 32 is provided on the upper surface of one end of the two pipe bodies 30 (tube body main body 3002).
The hopper 32 is single, and the landfill material is put into the hopper 32 from the mud storage tank 24, and the landfill material is put into the two pipe bodies 30 from the hopper 32.
In the present embodiment, as shown in FIG. 3, a stirrer 3202 is disposed at the bottom of the hopper 32 so that the landfill material is uniformly introduced into the tube body 30 from the hopper 32. Further, the opening 3204 of the hopper 32 is formed long in the front and rear directions so that the landfill material can be smoothly put into the hopper 32 from the mud storage tank 24 regardless of the inclination of the tube body 30 (tube body portion 3002). The inlet 2402 of the mud storage tank 24 faces the center of the opening 3204.

A frame member 40 is provided on the lower surface of one end of the two tube bodies 30 (tube body main body portion 3002) so as to extend on the extension of the tube body 30 (tube body main body portion 3002). Is supported by the hull 20 via a bracket 2010 fixed to the hull 20 and a pin 2012 inserted through the bracket 2010 and the frame member 40, and the pin 2012 is located in a portion near the front of the hull 20. As a result, the tube body 30 (tube body body portion 3002) is swingably supported at a position near the front portion of the hull 20 with the pin 2012 as a fulcrum so that the hopper 32 is always located on the water surface.
The drive unit 36 is constituted by a hydraulic or electric motor, and two are provided corresponding to the screw blades 34. And the upper end of each screw blade | wing 34 is each connected with a motor, and each motor is arrange | positioned on the frame member 40 so that the movement along the longitudinal direction of the tubular body 30 is possible.
Two hydraulic cylinders 42 are provided at the end of the frame member 40, and the piston rod of each hydraulic cylinder 42 is connected to a corresponding motor. It is comprised so that it may slide along the extension direction of the body 30 (tube main body part 3002). Thus, sliding the screw blades 34 with respect to the tube body 30 (tube body main body 3002) is very convenient during maintenance for removing clogging and the like.

The swing drive means 28 includes a winch 2802 disposed on the hull 20, a wire 2804 wound around the winch 2802, and a wire guide portion 2806 provided at the outer edge in the width direction at the rear of the hull 20. ing.
The end of the wire 2804 drawn from the winch 2802 is connected to the tip end portion of the tubular body 30 (tubular body 3002) through the wire guide portion 2806, and the underwater driving device 26 is driven by the pin 2012 by driving the winch 2802. It is comprised so that it may rock | fluctuate up and down by using as a supporting point. The wire guide portion 2806 is arranged at a predetermined height 2806A and at the upper end of the support 2806A so that the tube 30 (tube body 3002) can be horizontally lifted at the side of the hull 20. The pulley 2806B guides the wire 2804.

As shown in FIGS. 6A and 6B, the underwater driving tool 50 includes a rectifying member 52 and a cylindrical member 54.
The straightening member 52 is attached to the tube tip portion 3006 via a plurality of rods 56 so as to face the lower end (lower end) 3010 of the tube tip portion 3006.
Then, the surface of the straightening member 52 facing the tip 3010 of the tube tip part 3006 abuts against the landfill material flowing out from the tip 3010 and directs the landfill material outward in the radial direction of the tube tip part 3006. In addition, the center is formed by a conical surface protruding toward the tip 3010 side.

The cylindrical member 54 is made of steel, is formed in a horizontally long oval shape so as to surround the outside of the tip 3010 of the two tube tip portions 3006, and the upper and lower portions are open.
The tubular member 54 has an upper end positioned higher than a lower end 3010 of the tube tip 3006 and a lower end of the tube tip 3006 with the tube tip 3006 facing downward in the vertical direction. Both side portions are attached to the tube body 30 by three elongated members 58 that can be respectively flexible to the tube body tip portions 3006 so as to be positioned below 3010. A chain or a wire can be used as such a flexible elongated member 58.
In the present embodiment, the lower end 3010 of the tubular body tip portion 3006 is disposed so as to be located at substantially the center of the height of the tubular member 54.

Next, the case where the landfill material is placed on the seabed by the underwater placement ship 12 will be described.
In the underwater driving vessel 12, the tubular body 30 is disposed via the winch 2802 and the wire 2804 so that the lower end of the cylindrical member 54 provided at the lower end of the tubular body 30 is attached to (is placed on) the seabed B. The swing angle, that is, the swing angle of the underwater driving device 26 is adjusted.
When the lower end of the cylindrical member 54 is attached to the seabed B, the lower end of the cylindrical member 54 sinks in the floating mud accumulated on the seabed B, and the opening at the lower end of the cylindrical member 54 is closed.

The landfill material is supplied from the solidification processing vessel 14 to the cyclone 22 of the underwater placement ship 12 via the offshore pipe H, and after the air is separated by the cyclone 22, the landfill material is stored in the mud storage tank 24 and stored. The mud tank 24 is supplied to the hopper 32, and the landfill material is supplied onto the screw blades 34 through the stirrer 3202. The separated air is safely discharged through the air discharge pipe J.
And although the screw blade 34 is rotationally driven by the drive part 36 and the inside of the pipe body 30 is filled with seawater, the landfill material is pushed forward in a state in which the inside of the pipe body 30 is in close contact with the screw blade 34, The tube 30 is pushed out from the tip 3010 into the seawater inside the tubular member 54. In this case, since the landfill material is pushed forward while the inside of the tube body 30 is in close contact, the dredged sand and the solidified material are not separated inside the tube body 30 before reaching the tip 3010.

As shown in FIG. 7, the landfill material pushed out from the lower end 3010 of the tubular body 30 abuts against the rectifying member 52 and is turned to the inner surface of the cylindrical member 54, so that the inner surface of the cylindrical member 54 Strike. As a result, the pre-drilling is prevented, and the momentum (flow velocity) of the landfill material pushed out from the lower end 3010 of the tubular body 30 is attenuated inside the cylindrical member 54, and the opening at the lower end of the cylindrical member 54 is closed. Therefore, the landfill material is filled in the cylindrical member 54 from the bottom to the top.
And the reclamation material ascends the annular space formed by the outer peripheral surface of the tubular body tip 3006 and the inner peripheral surface of the tubular member 54, from the upper end of the tubular member 54 to the outside of the tubular member 54, The landfill material with attenuated momentum (flow velocity) overflows, and the landfill material with attenuated momentum (flow velocity) spreads on the seabed B at the top of the tubular member 54 as if spreading and sequentially stacked. The landfill material is placed on the seabed B around the shaped member 54.

Therefore, even if a large amount of earth and sand is placed in a short time, it is possible to suppress the floating mud on the seabed B and the surrounding landfill material from being disturbed by the momentum of the landfill material flowing out from the pipe body 30.
Even if the vibration of the tubular body 30 (tubular tip portion 3006) becomes large, the vibration is attenuated by the cylindrical member 54. Therefore, the vibration disturbs floating mud on the seabed B and surrounding landfill material. Is suppressed.
Therefore, a large amount of landfill material can be reliably placed in a limited place around the cylindrical member 54 in a short time without causing water pollution.

Further, by rocking the tube body 30 by the rocking drive means 28, the depth (height from the seabed) of the distal end portion 3006 and the tubular member 54 of the tube body 30 can be changed. Even if the water depth changes like
Further, the tube body 30 is arranged with its length direction facing the front-rear direction of the hull 20, and one end side of the tube body 30 can swing up and down via a pin 2012 at a portion near the front of the hull 20. Since the wire guide portion 2806 that supports and receives the load of the wire 2804 connected to the other end side of the tube body 30 is disposed at the rear portion of the hull 20, the weight of the long and heavy underwater driving device 26 is increased. As shown in FIG. 2, the stability of the hull 20 during the placing operation is improved, and as shown in FIG. 5, the tube 30 is horizontally placed on the sea surface. This is extremely advantageous for improving the running stability of the hull 20 when moving as a state.

  When a desired amount of landfill material has been placed around the tubular member 54, the transfer of the landfill material in the tube body 30 by the screw blades 34 is stopped, and the tube body 30 is swung upward to move the tube. The shaped member 54 is separated from the seabed, the hull 20 is moved to the next placement site, and the landfill material is placed in the same manner as described above. The hull 20 is moved in this case, for example, when the hull 20 is moved forward, the anchor rope R is fed out in the ship winch 2002 arranged in the rear part of the hull 20 and is arranged in the front part of the hull 20. This is done by rolling up the anchor rope R in the ship sending winch 2002. In addition, since the lower end of the cylindrical member 54 is open, when the tubular body 30 is swung upward, no landfill material remains in the cylindrical member 54, and the cylindrical member 54 does not remain. The load of the remaining landfill material does not affect the pipe body 30.

In the embodiment, the case where the underwater driving device 26 is disposed on the side in the width direction of the hull 20 has been described. However, the hull is divided in the width direction at portions other than the front end or the rear end of the hull, It is also possible to arrange an underwater driving device between the divided hulls.
In the embodiment, the case where the number of the tube bodies 30 is two has been described. However, the number of the tube bodies 30 may be one, or may be three or more. In the case where there is one tube body 30, as shown in FIGS. 8A and 8B, the cylindrical member 54 is circular when viewed in plan, and the tubular body tip portion 3006 is formed at the center of the tubular member 54. Will be located.
Further, as shown in FIGS. 9A and 9B, a wall portion 60 that extends from the upper end of the cylindrical member 54 and extends in the circumferential direction of the cylindrical member 54 is provided, and the cylindrical shape extends in the circumferential direction. If the height of the portion of the member 54 is formed higher than that of the other portions, the landfill material with the reduced momentum overflows from the upper end of the tubular member 54 to the outside of the tubular member 54 when the landfill material is placed. The exit direction can be directed to a specific direction, which is advantageous when placing a landfill material only in a limited narrow area.

  As is clear from the above description, according to the underwater placing method, the underwater placing tool and the underwater placing ship of the present invention, the quality of the landfill material can be ensured, and a large amount of landfill can be achieved while suppressing water pollution. The material can be placed securely.

DESCRIPTION OF SYMBOLS 12 Underwater placing ship 20 Hull 26 Underwater placing apparatus 30 Tube 50 Underwater placing tool 52 Rectification member 54 Cylindrical member

Claims (16)

The upper part of the pipe body is positioned on the water surface, the lower end of the pipe body faces the water bottom, the landfill material is supplied to the pipe body on the water surface, and the landfill material is allowed to flow out from the lower end to An underwater placement method for placing landfill material in
A cylinder which is open at the bottom of the tubular body and has an upper end positioned higher than the distal end of the tubular body, and a lower end located below the lower end of the tubular body and surrounding the lower end portion of the tubular body Arranged,
Facing the lower end of the tubular body, provided with a rectifying member that strikes the landfill material flowing out from the lower end and directs the flow of the landfill material toward the inner surface of the tubular member;
The lower end of the tubular member is attached on the bottom of the water,
The landfill material flowing out from the lower end of the tubular body is abutted against the inner surface of the cylindrical member via a rectifying member, and the momentum of the flow of the landfill material is attenuated inside the tubular member to landfill Fill the inside of the cylindrical member with material,
The landfill material is driven on the bottom of the water so that the landfill material with the reduced momentum overflows from the upper end of the annular space formed by the outer peripheral surface of the tubular body and the inner peripheral surface of the tubular member. Like,
An underwater placement method characterized by this.   The conveyance of the landfill material inside the pipe body is such that screw blades arranged over almost the entire length of the pipe body rotate inside the pipe body and push the pipe body in a state in which the landfill material is in close contact. The underwater placing method according to claim 1, wherein the underwater placing method is performed.   The upper part of the pipe body is supported by the hull so that it can swing up and down, and the landfill is placed by swinging the pipe body up and down in response to changes in the depth of the water bottom. The underwater placing method according to claim 1 or 2, characterized in that:   A plurality of the tubular bodies are provided, the rectifying members are respectively disposed so as to face below the lower ends of the respective tubular bodies, and the cylindrical member is single and surrounds the lower end portions of the plurality of tubular bodies. The underwater placing method according to any one of claims 1 to 3, wherein the underwater placing method is arranged so as to surround.   5. The underwater placing method according to any one of claims 1 to 4, wherein the landfill material is obtained by adding a cement-based solidifying material to dredged sand. An underwater placing tool for causing a landfill material to flow out from the lower end of a tubular body onto the water bottom and placing the landfill material onto the water bottom,
The underwater driving tool includes a rectifying member and a cylindrical member,
The straightening member is attached to the pipe body so as to face the lower end of the pipe body and hit the landfill material flowing out from the lower end so that the landfill material is directed outward in the radial direction of the pipe body. ,
The cylindrical member is open in the vertical direction, the upper end is positioned higher than the lower end of the tubular body, and the lower end is positioned lower than the lower end of the tubular body, and the lower end portion of the tubular body and the periphery of the rectifying member Attached to the tube so as to surround the
An underwater driving tool for landfill materials characterized by that.   The said cylindrical member is attached to the said tubular body by the flexible elongate member, The underwater placement tool of the landfill material of Claim 6 characterized by the above-mentioned.   The submerged placement tool for landfill material according to claim 6 or 7, wherein the lower end of the tubular body is located at substantially the center of the height of the tubular member or below the center.   A plurality of the tubular bodies are provided, the rectifying members are respectively disposed so as to face below the lower ends of the respective tubular bodies, and the cylindrical member is single and surrounds the lower end portions of the plurality of tubular bodies. 9. The underwater placing tool for landfill material according to any one of claims 6 to 8, wherein the tool is disposed so as to surround.   The underwater placement of the landfill material according to any one of claims 6 to 9, wherein an upper end portion extending in a circumferential direction of the cylindrical member is formed higher than other upper end portions. Ingredients. A hull having a longitudinal length;
An underwater driving device provided in the hull,
The underwater driving device includes a tubular body that extends in a straight line and has a long length corresponding to the longitudinal length of the hull, a hopper that is provided at one end of the tubular body and into which a landfill material is charged, A screw blade that is rotatably disposed inside the tube body and rotates to push the inside of the tube in close contact with the landfill material, a drive unit that rotationally drives the screw blade, and a second end of the tube body. The underwater driving tool,
The tube body is disposed with its length direction facing the front-rear direction of the hull, and the one end side is coupled to a portion near the front part or the rear part of the hull so as to be swingable up and down,
A swing drive means for swinging the tube up and down is provided,
The underwater driving tool includes a rectifying member and a cylindrical member,
The straightening member is attached to the pipe body so as to face the lower end of the pipe body and hit the landfill material flowing out from the lower end so that the landfill material is directed outward in the radial direction of the pipe body. ,
The tubular member has an open top and bottom, an upper end is positioned higher than the other end of the tubular body, and a lower end is positioned below the other end of the tubular body, and the other end portion of the tubular body and the rectification It is attached to the tubular body so as to surround the periphery of the member,
An underwater launcher characterized by that. A hull having a longitudinal length;
An underwater driving device provided in the hull;
Oscillating drive means for oscillating the underwater driving device up and down;
The underwater driving device includes a tubular body that extends in a straight line and has a long length corresponding to the longitudinal length of the hull, a hopper that is provided at one end of the tubular body and into which a landfill material is charged, A screw blade which is rotatably disposed inside the tube body and rotates to push the tube body in close contact with the landfill material; and a drive unit which is provided on one end side of the tube body and rotationally drives the screw blade. The underwater driving tool provided at the other end of the tubular body,
The swing driving means includes a winch disposed on the hull and wound with a wire, a wire guide portion provided on an outer edge of the hull, and an end portion extending from the winch and passing through the wire guide portion. Composed of wires connected to the body,
The tubular body is disposed with its length direction directed in the front-rear direction of the hull, and the one end side is coupled to one of the front part or the rear part of the hull so that it can swing up and down,
The guide part is provided on the other of the front part or the rear part of the hull,
The underwater driving tool includes a rectifying member and a cylindrical member,
The straightening member is attached to the pipe body so as to face the lower end of the pipe body and hit the landfill material flowing out from the lower end so that the landfill material is directed outward in the radial direction of the pipe body. ,
The tubular member has an open top and bottom, an upper end is positioned higher than the other end of the tubular body, and a lower end is positioned below the other end of the tubular body, and the other end portion of the tubular body and the rectification It is attached to the tubular body so as to surround the periphery of the member,
An underwater launcher characterized by that.   The tubular body extends linearly and is coupled to the hull so as to be swingable. The tubular body is connected to an end portion of the tubular body through a bent portion, and is oblique to the tubular body. The underwater driving vessel according to claim 11, wherein the underwater driving vessel is configured by a tube tip portion that extends to the top and forms the other end of the tube.   The coupling of the tubular body to the hull is performed by rotatably supporting the tubular body with a pin supported on the hull side. Underwater launcher.   The drive unit includes a motor coupled to an upper end of a screw blade, the screw blade and the motor are slidably disposed along the extending direction of the tube body, and the motor and the screw blade are disposed on the frame member. The underwater driving vessel according to any one of claims 11 to 14, further comprising a hydraulic cylinder that is slid along an extending direction of the tubular body.   16. The submersible vessel according to claim 11, wherein the hopper includes a landfill opening that is long in a longitudinal direction of the hull.

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