JP2013132957A - Transfer device of mooring rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer device for safely and efficiently feeding out a mooring rope with weight of a considerably large weight being connected to its fore end from a ship into the sea, or pulling up the mooring rope from the sea onto the ship.SOLUTION: The transfer device 1 feeds out the mooring rope 4 with the weight being connected to its fore end from a ship into the sea, or pulls up the mooring rope onto the ship from the sea. The transfer device includes: a main machine 5 having a first holding means 6 to hold part of the mooring rope extending in an approximately horizontal direction on the ship; and a movable machine 7 having a second holding means 8 for holding the other part of the mooring rope at the position separate from the main machine to repeat the reciprocating motion in the transferring direction of the mooring rope. The transfer device feeds out or pulls up the mooring rope with the weight being connected to the fore end thereof by repeating a step in which the main machine releases the first holding means and the movable machine moves to transfer the mooring rope while holding the mooring rope by means of the second holding means, and a step in which the main machine holds the mooring rope by means of the first holding means, and the movable machine releases the second holding means to move and return to the position before the transfer of the mooring rope.

Description

  The present invention relates to a transfer device for sending a mooring line having a weight connected to a tip thereof from the ship to the sea or pulling it up from the sea to the ship.

  In recent years, wind power generation that generates power using natural wind has attracted attention in order to effectively use natural energy from the viewpoint of environmental protection. In particular, offshore wind power generation that uses offshore winds is effective as the next generation energy resource because it has no problems with noise and the site, and wind power can be obtained more stably than on land and high power generation can be expected. .

  In offshore wind power generation, a mooring line with a weight of sinker, anchor, etc. connected to the tip is sent out from the ship in order to float and fix the power generation equipment on the sea (Patent Documents 1 and 2), and several moorings submerged on the seabed with the weight The rear end of the cable is connected to a power generation facility floating on the ocean (Fig. 3). Such a mooring cable has strength and weight so that it will not be swept away by tidal currents such as ocean currents. It is as much as the weight. Therefore, there is a problem with the work equipment used when sending out such a mooring line having a considerable weight from the ship to the sea or collecting it from the sea to the ship.

  When carrying out work to put a mooring line with weight into the sea at sea, it is generally considered to use a work ship equipped with a crane in the hull (Patent Document 3). Even if the weight connected to the cable is lifted and put into the sea together with the mooring line, it is necessary to remove the wire from the weight submerged on the seabed, so new equipment or labor is required for this operation. Furthermore, if a heavy weight is lifted and moved by a crane, the ship becomes unstable and the shaking becomes large, so that the work becomes difficult and there is a risk of causing an accident. Even if a hoisting device such as a winch is used, the hoisting device has insufficient rotational torque, and a single hoisting device cannot smoothly feed a mooring line with a weight from the ship to the sea. It is necessary to work to move the attachment position of the wire attached to the mooring line every time a certain distance is transferred, by gradually feeding out these wires using multiple hoisting devices. Time and effort are required.

  Therefore, it is expected to develop a transfer device capable of safely and efficiently sending a mooring line having a considerable weight connected to the tip from the ship to the sea or lifting it from the sea to the ship.

JP 2010-224114 A JP 2002-188557 A JP 2010-70025 A

  An object of the present invention is to provide a transfer device for safely and efficiently sending a mooring line having a heavy weight connected to the tip thereof from the ship to the sea or lifting it from the sea to the ship.

  As a result of studies by the inventor in order to solve the above-described problems, the present machine provided with a first gripping means for gripping a part of a mooring line extending in a substantially horizontal direction, and a position away from the present machine The second holding means for holding the other part of the mooring line is installed, a moving machine that repeats the reciprocating motion in the direction in which the mooring line is transferred is installed, the machine releases the first holding means, and the moving machine Moving the mooring line while gripping the mooring line with the second gripping means, the machine grips the mooring line with the first gripping means, and the mobile unit moves by releasing the second gripping means. It has been found that the mooring line can be safely and efficiently transferred by repeating the process of returning to the position before the mooring line is transferred, and the present invention has been completed.

  That is, the present invention is a transfer device for sending a mooring line having a weight connected to the tip thereof from the ship to the sea or pulling it up from the sea to the ship, for grasping a part of the mooring line extending substantially horizontally on the ship. This machine equipped with a first gripping means and a second gripping means for gripping another part of the mooring cable at a position remote from the machine, and reciprocating in the direction of transferring the mooring cable The machine releases the first gripping means, the mobile machine moves while holding the mooring line with the second holding means and transfers the mooring line, and the machine moors with the first holding means. The mooring line with the weight at the tip is sent out or pulled up by repeating the process of holding the line and moving the mobile unit after releasing the second holding means and returning to the position before transferring the mooring line. It is a transfer device.

  Furthermore, the present invention provides a machine equipped with a first gripping means for gripping a part of a mooring line extending substantially horizontally on a ship, and grips another part of the mooring line at a position away from the machine. And a second moving means that repeats reciprocating movement in the direction of sending out the mooring line, the machine releases the first holding means, and the moving machine holds the mooring line with the second holding means. The process of moving and feeding the mooring line while the machine holds the mooring line by the first gripping means, and the process of moving the mobile machine by releasing the second gripping means and returning to the position before sending the mooring line is repeated. Thus, the transfer device is characterized in that a mooring line with a weight at the tip is sent out from the ship to the sea.

  Further, according to the present invention, the mooring line is composed of a chain formed by inserting and connecting the adjacent metal ring to the opening of the metal ring, and the first gripping means and / or the second gripping means has the tip of the stopper plate attached to the end of the metal ring. The transfer device is arranged on the opening surface and grips the mooring line by bringing the tip edge or plate surface of the stopper plate into contact with the outer periphery of the metal ring adjacent to the metal ring.

  Furthermore, the present invention is a transfer device characterized in that the machine and the mobile machine are connected by a hydraulic cylinder, and the mobile machine repeats an expansion / contraction motion with respect to the machine by the expansion and contraction of the hydraulic cylinder.

  According to another aspect of the present invention, there is provided a work boat comprising the transfer device and a turntable on a ship, wherein the mooring line sent from the ship to the sea by the transfer device or pulled up from the sea to the ship is wound and stored on the turntable. It is.

  Furthermore, the present invention provides the above-mentioned transfer device and any one of a slide, a gypsy wheel or a chain pipe on a ship, and a mooring line transferred by the transfer device is installed on the ship's edge, either a slide, a gypsy wheel or a chain pipe. It is a work ship characterized by being sent from the ship to the sea via the sea or pulled up from the sea to the ship.

  Moreover, this invention is a transfer method which sends out the mooring cable which connected the weight to the front-end | tip from the ship to the sea, or pulls it up from the sea to the ship using the said transfer apparatus.

  According to the transfer device of the present invention, it is possible to safely and efficiently send a mooring line having a weight connected to the tip thereof from the ship to the sea or lift it from the sea to the ship.

  In addition, according to the transfer device of the present invention, mooring lines of any weight and length can be sent out or pulled up, so that mooring lines according to the depth of the sea and the speed of tidal current can be quickly put into the sea. It is possible to smoothly install offshore wind power generation facilities over a wide area on the ocean.

The figure which shows the work ship provided with the transfer device ((a) Front view, (b) Side view, (c) Plan view) Figures showing the structure of the transfer device ((a) Plan view), (b) Side view) The figure which shows the operating state of a transfer device The figure which shows the state which installed the wind power generation equipment on the sea ((a) side view, (b) top view)

  The transfer device of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the transfer device (1) of the present invention is installed on a work ship (2), and a mooring line (4) connected with a weight (3) having a considerable weight at its tip is safely and efficiently removed from the ship. It is a device for sending out to the sea or lifting it from the sea to the ship. As shown in FIG. 2, the transfer device (1) includes a main machine (5) provided with a first gripping means (6) for gripping a part of a mooring line (4) extending in a substantially horizontal direction on a ship. , A mobile device (7) provided with second gripping means (8) for gripping another part of the mooring line (4) at a position away from the machine, and reciprocating in the direction of transferring the mooring line It consists of.

  The mooring line (4) is transferred while the machine (5) releases the first gripping means (6) and the mobile unit (7) moves while holding the mooring line (4) by the second gripping means (8). And the machine (5) holds the mooring line (4) with the first gripping means (6) and the mobile unit (7) releases the second gripping means (8). It is performed by repeating the process of moving and returning to the position before the mooring line is transferred.

  The mooring line can be selected and used as appropriate for the environment in which the power generation equipment is installed, such as chains and wire ropes. However, in order to fix the power generation equipment against the ocean current, considerable strength and weight are required. Neighboring metal ring is inserted through and connected to the opening of the metal ring because it is necessary, it can be folded and stored on board easily, and it is easy to manufacture and highly productive. It is preferable to use a chain formed of

  When a chain formed by inserting and connecting an adjacent metal ring to the opening of the metal ring is used as the mooring line, as shown in FIG. 2, the first holding means (6) and / or the second holding means (8 ), The stopper plate (6a, 8a) rotatably attached to the machine (5) and / or the mobile device (7) is rotated by the hydraulic cylinder (6b, 8b), and the tip of the stopper plate is made of a metal ring. The chain can be gripped by arranging it on the opening surface (4a). The stopper plate on the opening surface (4a) of the metal ring fixes the chain by bringing the tip edge or plate surface of the stopper plate into contact with the outer periphery (4b) of the metal ring adjacent to the metal wheel. In this case, since the mooring line (chain) (4) is in contact with the upper surface of the movable pedestal (8c), the mooring line (chain) does not come off the fixing by the stopper plate due to the downward movement. FIG. 2 shows a transfer device (1) provided with a first stopper plate (6a) and a second stopper plate (8a) on both the first gripping means (6) and the second gripping means (8), respectively.

  For example, when a mooring line (chain) is sent out from the ship to the sea, as shown in FIG. 3, the machine (5) rotates the first stopper plate (6a) with the hydraulic cylinder (6b) to remove the plate. Pulling up the tip, releasing the first gripping means (6), and rotating the second stopper plate (8a) with the hydraulic cylinder (8b) of the mobile device (7), the tip of the plate is a mooring line (chain) ( 4) By pushing down on the opening surface (4a) of the metal ring, the tip edge or plate surface of the stopper plate (8a) is brought into contact with the outer peripheral surface (4b) of the adjacent metal ring, and the mooring line (chain) (4) ), The mobile machine (7) moves while sending out the mooring line while resisting the gravity due to the weight (FIGS. 3 (a) to (b)), and this machine (5) is the hydraulic cylinder (6b). The first stopper plate (6a) is pushed down, the stopper plate (6a) is brought into contact with the outer peripheral surface of the metal ring of the chain (4), the mooring line is held, and the hydraulic cylinder (8b) of the mobile device (7) 2 Pull up the stopper plate (8a) and the mobile unit (7) moves to By repeating the step of returning to the previous position (FIG. 3 (c) - (d)) to issue Ri, it can be fed mooring lines equipped with a weight at the tip stably on board into the sea.

  Conversely, when the mooring line (chain) is pulled up from the sea to the ship, the operating sequence is not shown in the figure, but this machine (5) rotates the first stopper plate (6a) with the hydraulic cylinder (6b). Then pull up the tip of the plate and rotate the second stopper plate (8a) with the hydraulic cylinder (8b) of the mobile unit (7) to push the tip of the plate down onto the opening surface of the metal ring of the chain (4). The stopper plate (8a) comes into contact with the outer peripheral side of the adjacent metal ring to grip the mooring line (chain) (4), and the mobile unit (7) moves while pulling up the mooring line while resisting the gravity due to the weight. And the machine (5) pushes down the first stopper plate (6a) with the hydraulic cylinder (6b), abuts the stopper plate (6a) on the side of the metal ring of the chain (4), and holds the mooring line. By lifting the second stopper plate (8a) with the hydraulic cylinder (8b) of the mobile machine (7) and moving the mobile machine (7) back to the position before the mooring line is lifted, arrived Tomesaku can be a raise from the ship into the sea.

  As described above, the transfer device (1) according to the present invention allows the mooring line (4) to be gripped alternately by the first gripping means (6) and the second gripping means (8) while moving the mobile unit (7). It is not necessary to lift up and move a mooring line or weight of several hundred tons with a wire from a high place like a crane. There is no need to perform removal or other work. Therefore, the work can be performed smoothly and safely on the ship. In addition, as the weight, a sinker or anchor with a corrugated shape having a considerable weight for reliably fixing on the sea floor against an ocean current or the like can be appropriately selected and used.

  The mobile unit (7) is connected to the main unit (5) via the hydraulic cylinder (10), and the structure is such that the mobile unit repeats reciprocating movement in the direction in which the mobile unit moves the mooring line by expansion and contraction of the hydraulic cylinder (10). Good. In the transfer device shown in FIG. 2, the machine (5) is fixed on the pedestal (9), and the mobile unit (7) is installed on the movable pedestal (8c) that can reciprocate on the pedestal (9). The machine (5) and the mobile machine (7) are connected by a hydraulic cylinder (10). By adopting such a structure for the transfer device, it is easy to transport and install the main unit, the mobile unit, and the hydraulic cylinder for moving the mobile unit on the ship.

  As shown in FIG. 1, if the transfer device (1) and the turntable (12) are connected on the work boat (2), the mooring line (4) sent out or lifted by the transfer device is placed on the turntable. It can be wound and stored, and work can be efficiently performed in a limited space on a work boat.

  In addition, if the work boat (2) is equipped with a slide (11), the mooring line (4) is sent or lifted by the transfer device via the slide, so that the mooring line does not hit the ship edge and damage the hull. Can work on. Although FIG. 1 shows an example in which the slide (11) is installed on the ship rim, a chain pipe for passing a gypsy wheel or a mooring line may be installed instead of the slide.

  The offshore wind power generation facility (13) is equipped with a floating body (15) for floating the power generation facility on the sea surface and a windmill (14) for obtaining rotational force from the wind, and is sent out by the transfer device (1). The plurality of mooring lines are arranged radially around the floating body with the rear ends connected to the floating body (15) (FIG. 3). If the offshore wind power generation facility is moored in the sea in this way, it can be stably installed on the sea surface regardless of the flow of the tide.

1 Transfer device 2 Work boat 3 Weight 4 Mooring line (chain)
4a Opening surface 4b Outer peripheral surface 5 Machine 6 First gripping means 6a First stopper plate 6b Hydraulic cylinder 7 Mobile device 8 Second gripping means 8a Second stopper plate 8b Hydraulic cylinder 8c Moving base 9 Base 10 Hydraulic cylinder 11 Slide base 12 Turn table
13 Offshore wind power generation facility 14 Windmill 15 Floating body 16 Screw

Claims (7)

  A transfer device for sending a mooring line having a weight connected to a tip thereof from the ship to the sea or lifting it from the sea to the ship, comprising a first gripping means for gripping a part of the mooring line extending substantially horizontally on the ship. Comprising a second machine for gripping another part of the mooring line at a position remote from the machine, and a mobile unit that repeats reciprocating movement in the direction of transferring the mooring line, The machine releases the first gripping means, the mobile machine moves while holding the mooring line with the second gripping means and transfers the mooring line; the machine holds the mooring line with the first holding means; A transfer device characterized in that the mooring line having a weight at its tip is sent out or pulled up by repeating a process in which the mobile unit releases the second gripping means and moves to return to a position before transferring the mooring line.   A main body provided with a first gripping means for gripping a part of the mooring line extending in a substantially horizontal direction on the ship, and a second part for gripping another part of the mooring line at a position away from the main body. It consists of a moving machine that has gripping means and repeats reciprocating movement in the direction of sending out the mooring line. This machine releases the first holding means, and the moving machine moves while holding the mooring line by the second holding means. By repeating the steps of sending out the cable and the machine holding the mooring cable with the first gripping means, and the moving machine releasing the second holding means and moving back to the position before sending out the mooring cable, 2. The transfer device according to claim 1, wherein the mooring line with a weight is sent from the ship to the sea.   The mooring line consists of a chain formed by inserting and connecting the adjacent metal ring to the opening of the metal ring, and the first gripping means and / or the second gripping means arranges the tip of the stopper plate on the opening surface of the metal ring. The transfer device according to claim 1 or 2, wherein the mooring line is gripped by bringing a tip edge or a plate surface of the stopper plate into contact with the outer periphery of the metal ring adjacent to the metal ring.   The transfer device according to any one of claims 1 to 3, wherein the machine and the mobile machine are connected by a hydraulic cylinder, and the mobile machine repeats an expansion and contraction movement with respect to the machine by extension and contraction of the hydraulic cylinder.   A transfer device according to any one of claims 1 to 4 and a turntable are provided on a ship, and a mooring line sent out from the ship to the sea by the transfer device or pulled up from the sea to the ship is wound and stored on the turntable. A working ship.   5. A slide, a gypsy wheel, or a chain pipe provided with the transfer device according to claim 1 and any one of a slide, a gypsy wheel, or a chain pipe on a ship, and a mooring line that is transferred by the transfer device installed on a ship edge. A work ship characterized by being sent out from the ship to the sea or pulled up from the sea to the ship via any of the above.   A transfer method in which a mooring line having a weight connected to a tip is sent from the ship to the sea or lifted from the sea to the ship using the transfer device according to any one of claims 1 to 4.

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