JPH11129980A - Moving device of working pontoon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the moving device of a working pontoon by an improved spud device, in which motion of the working pontoon at moving is smoothened and correctly positioned, and the cost of equipment is reduced and the installation space on a working deck is reduced. SOLUTION: On a carriage 3 movably arranged in the longitudinal direction of a deck 2 on the center part on the stern side or on the bow side of a pontoon 1, a set of a moving type spud device 40 suspending a spud 8 capably of falling toward the sea bottom by a spud winch 7 is arranged, and on both broadsides of the nearly center part of the pontoon 1, two set of fixed type spud devices 50 suspending spuds 18a, 18b capably of falling by spud winches 17a, 17b are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving apparatus for a work barge engaged in marine construction at a port, and more particularly to a work boat such as a dredger fixed at a predetermined position in a body of water to carry out work. And a device that can appropriately move and rotate the position of the hull in accordance with the conditions.

[0002]

2. Description of the Related Art A workboat for offshore work must be moved and positioned as needed, but there are several types of means for moving the workboat. A typical example will be described below. As a first means, four anchors connected to wires are sunk onto radiation on all sides of a barge, and the wires are wound or unrolled using a steering winch. The ship is moved and the barge is positioned while the anchor is stretched.

As a second means, there is a means using a spud device using a spud winch provided on a barge. A spud device is a means for forming an opening at an appropriate position of a work boat and communicating with the water bottom, dropping a spud (pile) vertically from the opening toward the water bottom, driving the spud into the water bottom, and fixing the hull. By pulling the spud device with the towing device while the spud is being driven into the water as the work progresses, the hull can be moved along the opening by the reaction force at this time.

[0004] Specifically, from the hanging tower,
Three columnar spuds can be lifted and dropped, and a plurality of spuds can be pierced into the seabed through an opening penetrating the barge to position the barge, leaving one spud on the seabed, and a push boat or side. Use a thruster or the like to turn the barge around the spud, then push another spud out, pull out the previous spud, and then perform the same operation to move the barge in a state of zigzag walking Means.

[0005] As a third means, the above-mentioned spud, turret,
The spud winch is mounted on a movable trolley as a set, and two sets of trolleys are arranged on rails attached to both sides of the trolley, and a long culvert for the moving distance of the trolley is drilled on the trolley. And
Two sets of moving spud devices in which the spud descending below the ship bottom can freely move in the front-rear direction, and a fixed spud device 1
There is a system in which pairs are arranged on the barge center line. While the fixed spuds are being pushed to the sea floor, the other two sets of moving spuds are floated, and the hull is moved in synchronism with the front-rear direction.
The barge can be relatively moved and positioned by lifting the fixed spud of the book and then moving the spud cart.

As a bogie moving drive, there is generally used a means for reducing the driving force of a hydraulic motor by a speed reducer, attaching a chain wheel to an output shaft thereof, pulling the chain around the chain, and pulling and moving the bogie. It is.

In addition to the above, a rack is attached to one surface of a prismatic spud as a means for fixing and moving the barge over the entire length,
A pinion is arranged on the final output shaft of the speed reducer driven by a hydraulic motor, the spud rack is meshed, the prismatic spud is moved up and down, and the prismatic spud is tilted by a separate hydraulic cylinder, and the barge is put in a pole state. There is also a method of moving.

[0008]

In the movement of the conventional barge described above, since the means for extending the anchors in all directions obstructs marine traffic in a bay near a city where marine traffic is intense, a spud system must be adopted. In fact, it is inevitable. However, the zigzag zigzag walking means for alternately pushing and pulling out the spud has a disadvantage that the movement to the target position is inefficient.

Further, the moving bogie means for mounting the spud, turret and spud winch on a movable bogie and moving two sets of bogies by rails can move the hull in a straight line and is efficient. However, the spud device mounted on the trolley is expensive in terms of equipment costs, and has the drawback of lacking smoothness in movement because the trolley is used to pull the trolley when moving. The situation of minute movement cannot be avoided.

[0010] Further, when the two sets of bogies are displaced in the circumferential movement, or when the neck of the bogie is turned by the tidal current or the like, a force acting on the bogie due to play of the bogie guide and the like acts. There is also a problem that smooth movement is not possible. Also,
Because the mobile trolley needs space for its width and travel,
There is a problem that the space on the working deck is reduced.

Therefore, the conventional spud device is susceptible to tides and winds, so that the fixed position of the hull may be deviated, and after the hull is fixed, it is necessary to perform an operation such as re-moving to a proper position and correcting the position. In many cases, there is a problem that extra time is required before starting work.

In view of the above circumstances, the present invention provides a spud device improved for the purpose of smoothing the movement of the work barge and accurately positioning it, reducing the equipment cost and reducing the installation space on the work deck. The present invention provides a moving device for a working barge according to the present invention.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to provide a spud by a spud winch on a bogie arranged movably in the front-rear direction on the deck at the stern side or the center of the bow side of the barge. Two sets of fixed spuds are provided, one set of mobile spuds which are suspended so that they can be dropped toward the sea floor, and the spuds are hung so that they can be dropped by spud winches on both sides near the center of the barge. The basic structure of the present invention is a working barge moving device characterized by the above arrangement.

[0014] The movable spud device includes a truck capable of traveling in a front-rear direction along a rail laid in a recess formed on a deck, a turret installed on the truck, and a spud winch mounted on the truck. And a spud that can be freely lifted and lowered from the tower, a hydraulic cylinder for moving the bogie 3 back and forth, a culvert drilled long in the front-rear direction in the recess, and a spud winch for the spud. , A sheave for winding down and a wire rope. A double-structured cylinder that can obtain a long stroke in a short space is used as a hydraulic cylinder.

[0015] The fixed type spud device comprises a turret fixedly installed on a deck and a spud winch mounted on the deck, a spud mounted on the turret so as to be lifted and lowered freely, and It has a sheave and a wire rope for winding and winding down with a winch. Further, on the bow side or stern side of the barge, there is provided a side thruster device including a flow hole penetrating through the hull to the side of the ship and a screw disposed at a central portion of the flow hole.

According to the work barge moving device, when positioning the barge, the two spuds on both sides constituting the fixed spud device are dropped by their own weight by the action of the spud winch at the stop position. And push it to the sea floor. At the same time, the length of the hydraulic cylinder of the mobile spud device is determined to fix the position of the bogie, and the spud is dropped to the seabed by its own weight, thereby positioning the barge by three-point support of the spud.

When the barge is moved and turned, the hydraulic cylinder of the movable spud device is driven by driving the hydraulic cylinder of the movable spud device in a state where the two spuds on both sides of the fixed spud device are pushed up to the seabed. Then, drop the spud and push it to the sea floor. Next, the spud of the fixed spud device is pulled up, the hydraulic cylinder is driven to move the bogie of the movable spud device in the recess, and the barge can be moved by the stroke of the hydraulic cylinder by the reaction force.

When the barge needs to be turned, the hull is turned around the spud of the movable spud device by operating a screw constituting a side thruster after the barge is moved. When the tidal current acts on the bow or stern of the barge during movement that does not require turning, the movement of the bow or stern due to the tidal current is prevented by operating the screw of the side thruster.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a working barge moving device according to an embodiment of the present invention. FIG. 1 and FIG. 2 are a plan view and a side view for explaining the configuration of the moving device according to the present invention. A movable spud device 40 is provided at the center of the stern side (or bow side) of the barge 1. I have. To explain the details of the movable spud device 40, a bogie 3 is disposed on the deck 2 so as to be movable in the front-rear direction. The bogie 3 is provided with two rails 5 laid in a recess 4 formed on the deck 2. , 5 can be driven. In addition, in this example, the case where the bogie 3 is arranged on the stern side will be described.

On the carriage 3, a tower 6 is installed and a spud winch 7 is mounted. A spud 8 is attached to the tower 6 so that it can be lifted and lowered. A cursor 9 provided with sheaves 10 on the left and right sides is fitted to the spud 8, and two wire ropes 12 are stretched on the spud winch 7 via the sheave 10 and the sheave 11 on the tower 6. Then, the wire rope 12 is wound up by the spud winch 7 and then lowered, whereby the spud 8 can be lifted or lowered.

Reference numeral 13 denotes a hydraulic cylinder for moving the carriage 3 back and forth along the rails 5 and 5. The hydraulic cylinder 13 is a double-structured cylinder capable of obtaining a long stroke in a short space. Reference numeral 14 denotes a culvert that is bored long in the front-rear direction in the concave portion 4 so as to move the spud 8 suspended through the hull in the front-rear direction.

Further, two sets of left-right symmetric fixed spud devices 50, 50 are provided on both sides of the barge 1 substantially at the center. As shown in the main part perspective views of FIGS. 2 and 3, the fixed spud device 50 includes towers 16a and 16b fixedly installed on the deck 2 and a spud winch 17.
a, 17b and spuds 18a, 18b.

A cursor 20 having sheaves 19a, 19b provided on the left and right sides is fitted to the spuds 18a, 18b, and the sheaves 19a, 19b and the turrets 16a, 16b are fitted.
The two wire ropes 22a, 22b are stretched on the spud winches 17a, 17b via the sheaves 21a, 21b on the wire b, and the wire ropes 22a, 22b are wound up by the spud winches 17a, 17b and lowered. Thus, the spuds 18a and 18b can be lifted or lowered. Stop holes 31 are opened at appropriate positions of the spuds 18a and 18b, and the spuds 18a and 18b are locked to the cursor 20 by pins 32.

On the bow H side of the barge 1, there is provided a side thruster device 28 comprising a flow hole 27 penetrating the hull to the side of the ship and a screw 26 arranged at the center of the flow hole 27. . This side thruster device 28
Is provided in order to prevent the bow H side from flowing to one side due to a tidal current acting on the hull, as will be described in detail later.

As described above, according to the present invention, the tower 6 and the spout winch 7 are mounted on the bogie 3 which is movable on the deck 2 at the center of the stern S side (or bow H side) of the barge in the front-rear direction. And a pair of movable spud devices 40 in which the spuds 8 are suspended from the sheaves 10 and 11 so that the spuds 8 can be dropped.
16b, spud winches 17a, 17b and sheave 1
9a, 19b, 21a, 21b, and the spud 18
It is characterized in that two sets of fixed-type spud devices 50 are provided in which a and 18b are suspended so that they can be dropped.

The operation of the present invention will be described below. First, in order to position the barge 1, the barge 1 is navigated in the working water area, stopped at an appropriate position, and the two spuds 18 a and 18 b on both sides constituting the fixed spud device 50.
Is set at the position shown at 18c in FIG. 2, that is, at a position floating from the seabed 30, and then the spud winches 17a, 17
By disengaging the power transmission clutch and releasing the brake, the spuds 18a and 18b are dropped by their own weight, and as shown in FIG.
b) is pushed against the seabed 30 to position the hull.

At the same time, the length of the hydraulic cylinder 13 is determined and the position of the carriage 3 of the movable spud device 40 is fixed, and the spud 8 is set to the position shown in FIG. Then, by releasing the power transmission clutch of the spud winch 7 and releasing the brake, the spud 8 is dropped by its own weight, and the spud 8 is pushed up to the position shown at 8e in FIG.
The barge 1 is positioned by three-point support together with a and 18b.

Next, an operation mode when the barge 1 moves and turns will be described. In FIG. 2, a fixed spud device 50 is shown.
With the two spuds 18a and 18b on both sides of the ship protruding from the sea floor 30, the hydraulic cylinder 13 of the movable spud device 40 is driven to move the bogie 3 to the bow H side in the concave portion 4. By releasing the power transmission clutch of the spud winch 7 and releasing the brake, the spud 8 is dropped by its own weight and pushed up to the seabed 30. At this time, the spud 8 is located at the position 8d in FIGS.

Next, by driving the spud winches 17a and 17b, the spuds 18a and 18b on both sides are pulled up to a state 18c in FIG. And hydraulic cylinder 1
The trolley 3 is driven to move the trolley 3 of the moving spud device toward the stern S in the recess 4. At this time, the spuds 8
The barge 1 moves toward the bow H by the stroke St of the hydraulic cylinder 13 due to the reaction force, as shown in FIG. The spud 8 at this time is shown in FIG.
It is at the position 8f in FIG.

At this time, if turning of the barge 1 is necessary, the screw 2 constituting the side thruster device 28
The hull can be turned around the spud 8 by operating the 6.

When the tidal current A shown in FIG. 4 acts on the bow H side of the barge 1 at the time of movement that does not require turning, the bow side flows in the B direction. At that time, the side thruster device 2
By operating the screw 26 that constitutes 8, the spill water flows in the flow hole 27 in the C direction, and it is possible to prevent the bow-side movement due to the tidal current. When the action of the tide A is in the opposite direction, the screw 26 is naturally rotated in the reverse direction,
It is sufficient to make the wrath water in 7 anger in the direction of F in FIG.

After the movement of the barge 1, the two spuds 18a, 18b on both sides are dropped again by their own weights as described above, and are positioned against the seabed 30 for positioning. When the moving distance of the barge 1 is long, the above-described moving operation may be repeatedly performed. When the moving direction of the barge 1 is reversed, the stroke operation of the hydraulic cylinder 13 may be reversed.

Therefore, according to the present invention, one set of the movable spud device 40 and two sets of the fixed spud device 50 are used for the stationary fixation of the barge 1 with the spuds supported at three points and the straight movement of the hull. Is what makes it possible.

[0034]

As described above in detail, according to the moving apparatus for a work barge according to the present invention, the work barge is arranged on the deck at the stern side or the center of the bow side so as to be movable in the front-rear direction. By disposing one set of mobile spud devices on the bogie and two sets of fixed spud devices on both sides in the approximate center of the barge, a zigzag that alternately pushes and pulls out the conventional spuds. It is possible to move to the target position more quickly than the dirt walking means, and especially when moving and turning the barge, move the two spuds of the fixed type spud device in a state of protruding to the seabed Driving the hydraulic cylinder of the type spud device to move the trolley, dropping the spud onto the sea floor, then pulling up the spud of the fixed type spud device, and driving the hydraulic cylinder to move the trolley of the moving spud device The by the reaction force barge can be moved by the stroke amount of the hydraulic cylinder by causing moved. When the boat is stopped, the barge is positioned by the three-point support of the spuds, so that there is no fear that the hull will move slightly with time.

Since the mobile type spud apparatus employed in the present invention is one set, the production cost can be greatly reduced as compared with the spud apparatus using two sets of movable trolleys as in the conventional example, and the deck can be mounted on the deck. Space can be used effectively. Furthermore, by using two sets of fixed spud devices on both sides, the bogie does not cling to the hull and a long stroke can be obtained in a short space for the moving means of the bogie, and a two-stage hydraulic cylinder is used. Smooth movement is obtained.

When the barge needs to be turned, the hull can be turned around the spud of the movable spud device by operating the side thruster device after the movement, which eliminates the need for turning. When the tidal current acts on the bow or stern of the barge during traveling, the side thruster can be similarly activated to prevent the bow or stern from moving due to the tidal current, thereby shortening the time until the start of work Becomes possible.

Therefore, according to the present invention, there is provided a moving apparatus for a working barge using a spud device in which the movement of the working boat is made smooth and accurate, the equipment cost is reduced, and the installation space on the working deck is reduced. Can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing a specific embodiment of a moving device of a working barge according to the present invention.

FIG. 2 is a side view showing a main part of FIG. 1;

FIG. 3 is a perspective view of a fixed spud device.

FIG. 4 is a schematic diagram illustrating an operation mode when the barge is moved in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Barge 2 ... Deck 3 ... Dolly 4 ... Depression 6, 16a, 16b ... Tower 7, 17a, 17b ... Spud winch 8, 18a, 18b ... Spud 9, 20 ... Cursor 10, 11, 21a, 21b ... Sheave 12 , 22a, 22b ... wire rope 13 ... hydraulic cylinder 14 ... culvert 15 ... spud device 26 ... screw 27 ... flow hole 28 ... side thruster device 40 ... movable spud device 50 ... fixed spud device

Claims (5)

[Claims] 1. A mobile spud device in which a spud is suspended by a spud winch on a bogie arranged on the deck at the center of the stern side or bow side of the barge so as to be movable in the front-rear direction. Characterized in that two sets of fixed type spud devices are provided on both sides of a substantially central part of the barge so that the spuds can be dropped by a spud winch. . 2. The mobile spud device is mounted on a trolley capable of traveling in the front-rear direction along a rail laid in a recess formed on a deck, and a turret and a trolley installed on the trolley. A spud winch, a spud that can be freely lifted and lowered from the turret, a hydraulic cylinder for moving the bogie 3 back and forth, a culvert that is long drilled in the front-rear direction in the recess, and a spud winch 2. The moving device for a working barge according to claim 1, further comprising a sheave for winding up and down and a wire rope. 3. The work barge moving device according to claim 2, wherein a double-structure cylinder capable of obtaining a long stroke in a short space is used as the hydraulic cylinder. 4. The fixed type spud device comprises: a turret fixedly installed on a deck and a spud winch mounted on the deck; a spud mounted to be able to be lifted and lowered from the turret; The moving device for a work barge according to claim 1, further comprising a sheave and a wire rope for winding and lowering the wire with a spud winch. 5. A side thruster device is provided on the bow side or stern side of a barge, comprising a through hole penetrating the hull to the side of the hull, and a screw disposed in a central portion of the through hole. The work barge moving device according to claim 1.