JP2006281887A - Boat lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horizontally slidable boat lifting device which is capable of ensuring a sufficient working space on a deck and miniaturized. <P>SOLUTION: The boat lifting device 5 comprises a first slider 60 to be moved in a substantially horizontal swinging direction above a boat 4 to be lifted, a second slider 70 to be moved in a substantially horizontal swinging direction with respect to the first slider 60, a wire rope 7 to be delivered from the second slider 70, and a winch 9 to wind the wire rope 7. The boat 4 is carried in a ship with the first slider 60 and the second slider 70 being moved inboard and stored onboard, and the boat 4 is taken in and lifted with the first slider 60 and the second slider 70 being moved overboard and swung out. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in a boat raising apparatus that suspends a mounted boat such as a rescue boat or a high-speed boat and carries it in and out of the vessel.

  Conventionally, as this type of boat raising device, a crane boom that pivots about a vertical axis and swings out from the deck, a turning device that drives the crane boom, and a crane boom is fed out through a sheave. There is a swing crane type boat raising device that includes a wire rope and a winch that winds up the wire rope, and that loads and unloads a mounted boat that is suspended on the wire rope by rotating a crane boom. .

Further, Patent Document 1 includes a davit that rotates about a horizontal axis with respect to the ship, suspends the mounted boat through two wire ropes fed out from the davit, and rotates the davit to wire rope. There has been proposed a davit-type boat raising device that loads and unloads a loaded boat that can be hung on a ship.
JP 2002-087377 A

  However, the conventional swing crane type boat raising device includes a swing support shaft that rotatably supports the base end portion of the crane boom, and the swing support shaft is erected on the deck. There was a problem that it interfered with the worker.

  In addition, the swing crane type boat raising apparatus has a problem that the space occupied by the boat raising apparatus increases with respect to the ship because there is a possibility that the volume of the movement trajectory of the loaded boat on the ship may be increased.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a horizontal slide type boat raising apparatus that secures a sufficient working space on the deck and can be miniaturized.

  The present invention is applied to a boat raising apparatus that carries a loaded boat into and out of the ship.

  A first slider that moves in a substantially horizontal swing direction above the mounted boat; a second slider that moves in a substantially horizontal swing direction with respect to the first slider; a wire rope that is fed out from the second slider; A winch for winding the wire rope is provided, the loaded boat is carried into the ship with the first slider and the second slider moved to the inside of the ship, and the first slider and the second slider are respectively placed on the outside of the ship. It is characterized in that the mounted boat is thrown in and out in the swinging state moved to (1).

  According to the present invention, the mounted boat can be moved in parallel on the ship, the volume of the movement trajectory of the mounted boat on the ship can be reduced, and the space occupied by the boat raising device with respect to the ship can be reduced.

  In addition, the lifting device can be installed along the ceiling of the ship, and a sufficient working space is secured on the deck, and the structure of the lifting device is obstructed by the operator on the deck. Can be avoided.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3, a keel support 11 on which a composite mounted boat (RIB) 4 is mounted is installed on the deck 2 of the ship 1, and a horizontal slide type lift that carries the loaded boat 4 by suspending it. A boat device 5 is provided.

  The boat raising device 5 includes a pair of guide rails 32 extending in a substantially horizontal swing-out direction along the ceiling 31 of the ship 1, a first slider 60 moving in the substantially horizontal swing-out direction along the guide rail 32, Two first hydraulic cylinders 80 that drive one slider 60, a second slider 70 that moves relative to the first slider 60, two second hydraulic cylinders 90 that drive the second slider 70, One wire rope 7 fed out through the sheave 12 connected to the two sliders 70 and one winch 9 for winding the wire rope 7 are provided.

  The boat raising device 5 carries the loaded boat 4 into the ship in a retracted state in which the first slider 60 and the second slider 70 are moved to the inside of the ship, respectively. That is, in the boat raising device 5, each first hydraulic cylinder 80 and the second hydraulic cylinder 90 are contracted so that the first slider 60 is attached to the ceiling portion 31 of the ship 1 as shown by solid lines in FIGS. , The second slider 70 is drawn inside the first slider 60, and the loaded boat 4 is carried into the ship together with the second slider 70.

  The boat raising device 5 loads and unloads the mounted boat 4 in a swinging state in which the first slider 60 and the second slider 70 are moved to the outside of the boat, respectively. That is, when the first hydraulic cylinder 80 and the second hydraulic cylinder 90 are respectively extended and operated, the tip of the first slider 60 is attached to the ceiling portion 31 of the ship 1 as shown by a two-dot chain line in FIGS. And the second slider 70 moves to the tip of the first slider 60, the sheave 12 is brought out to sea, and the loaded boat 4 is thrown in and out via the wire rope 7. ing.

  The boat lifting device 5 is configured such that the rod 92 of each second hydraulic cylinder 90 protrudes from the first slider 60 to the outside of the boat in a swinging state in which the second slider 70 is moved to the outside of the boat with respect to the first slider 60. .

  As shown in FIG. 4, the two guide rails 32 extend so as to sandwich the first slider 60. The square guide rail 32 is fixedly supported on the ceiling portion 31 of the ship 1 through a pedestal 29.

  The first slider 60 is formed in a rectangular frame shape by two square pipes 61 extending in parallel with each other and two beams 62 and 63 connecting both ends of each square pipe 61.

  A pair of front and rear rollers 64 and 65 are connected to the side surface of the base end portion of each square pipe 61. The first slider 60 moves along the guide rails 32 by rolling the front and rear rollers 64 and 65 to the respective guide rails 32.

  The front and rear rollers 64, 65 are arranged on the proximal end side from the central portion of the first slider 60, and ensure a stroke for the first slider 60 to move with respect to each guide rail 32.

  Each first hydraulic cylinder 80 extends so as to sandwich each guide rail 32. In each first hydraulic cylinder 80, each cylinder 81 is connected to each guide rail 32, and the tip of each rod 82 is connected to the tip of each square pipe 61 via each arm 83.

  Guide rails 62 are connected to the inner side surfaces of the respective square pipes 61. As will be described later, the second slider 70 moves via a pair of rollers 74 that are in rolling contact with each guide rail 62.

  The second slider 70 includes a sheave block 71 in which the sheave 12 is accommodated, and a round pipe 72 connected to the sheave block 71.

  Each roller 74 is coupled to both sides of the sheave block 71, and each roller 74 is in rolling contact with each guide rail 62 provided on the second slider 70. Each roller 74 and sheave 12 are arranged on the same axis.

  The round pipe 72 penetrates the beam 63 and is slidably supported by the beam 63 via a bush 66.

  The two second hydraulic cylinders 90 that drive the second slider 70 are disposed so as to sandwich the second slider 70.

  In the present embodiment, the cylinder 91 of each second hydraulic cylinder 90 is interposed inside each square pipe 61 of the first slider 60. The rod 92 of each second hydraulic cylinder 90 protrudes from the tip surface of each square pipe 61. The tip of each rod 92 is connected to the tip of the round pipe 72 via an arm 73.

  The ship 1 is provided with sheaves 16 and 17 at the rear of the first slider 60, and the wire rope 7 extending from the sheave 12 of the second slider 70 is guided to the winch 9 through the sheaves 16 and 17.

  As shown in FIGS. 6A, 6 </ b> B, and 6 </ b> C, a hemispherical ball hook 20 is coupled to the tip of the wire rope 7. It is connected so that attachment or detachment is possible with respect to the female metal fitting 19 connected via.

  A guide member 22 for guiding the ball hook 20 is attached to the female metal fitting 19 so that the ball hook 20 can be smoothly engaged.

  The female fitting 19 is provided with a stopper 23 for stopping the ball hook 20, and when the operation lever 24 is tilted, the ball hook 20 is locked by the stopper 23 so as not to be detached from the female fitting 19.

  The stainless steel wire rope 7 has a non-rotating structure, and the twisting of the wire rope 7 accompanying the increase or decrease of the tension is reduced, so that the mounted boat 4 suspended on the wire rope 7 is prevented from rotating. ing.

  As shown in FIG. 7, the sheave block 71 of the second slider 70 is provided with a top dead center stopper 25 through which the wire rope 7 is inserted, and the female metal fitting 19 is brought into contact with the top dead center stopper 25, whereby the wire rope 7 is not drawn any further.

  A safety pin 27 for detachably connecting the sheave block 71 of the second slider 70 and the female fitting 19 is provided. The sheave block 71 is provided with a pair of diverging plates 26 sandwiching the female fitting 19 in contact with the top dead center stopper 25. Each plate 26 has a hole 28 through which a safety pin 27 is inserted. The safety pin 27 is inserted through the hole 28 of each plate 26 and the hole of the female fitting 19 to connect the sheave block 71 and the female fitting 19. As a result, when the boat raising device 5 suspends the mounted boat 4 and carries it in and out of the deck 2, it is possible to avoid the mounted boat 4 from falling onto the deck 2 even if the wire rope 7 is loosened.

  A keel guide 50 is detachably installed on the deck 2 of the ship 1. When the lifting device 5 suspends the loaded boat 4 and carries it in and out of the deck 2, the keel guide 50 hits the keel portion of the loaded boat 4 to suppress the swinging of the loaded boat 4 in the pitching direction. This prevents the screw 18 and the like from colliding with the deck 2.

  The keel guides 50 are provided in pairs at the front and rear portions of the mounted boat 4. The keel guide 50 includes two legs 51 connected to the deck 2 via fixed hardware, a rail 52 supported by each leg 51 and extending in the anchoring direction of the ship 1, and a guide attached to the tip of the rail 52. And a roller 53. The legs 51 and the rails 52 are made of an aluminum pipe material and are lightened.

  The rail 52 extends substantially parallel to the deck 2 and has a tip inclined downward. The surface of the rail 52 is covered with a canvas to make the mounted boat 4 easy to slide.

  The installation height of the rail 52 is set so as to have a predetermined gap with respect to the keel portion of the mounted boat 4 that maintains a horizontal posture. When the mounted boat 4 swings in the pitching direction, the keel portion of the mounted boat 4 hits the rail 52 so that the mounted boat 4 does not swing further.

  A safety handrail 55 is provided at the heel side opening end on the deck 2 on which the loaded boat 4 is carried in and out. The safety handrail 55 includes a plurality of support posts 56 detachably mounted on the deck 2 and wire ropes 57 connecting the support posts 56.

  A hydraulic unit 33 is provided on the deck 2. The hydraulic oil is supplied to and discharged from the first hydraulic cylinder 80, the second hydraulic cylinder 90, and the winch 9 through the hydraulic unit 33.

Next, the operation of the boat raising device 5 will be described. The operation when the onboard boat 4 is thrown in while the ship 1 is sailing is performed according to the following procedure.
-The hydraulic unit 33 is operated.
Remove the lashing rope 8 hung on the mounted boat 4 mounted on the keel support 11 and drive the winch 9 to raise the mounted boat 4 about 0.5 m at a low speed, so that the female bracket 19 reaches the top dead center. Then, the winch 9 is stopped and the safety pin 27 is inserted. During this ascent, the mounted boat 4 is prevented from shaking in the rolling direction due to the side airbag or the like hitting the inner wall 36 of the ship 1.
・ Each keel guide 50 is mounted on the deck 2.
Remove the safety handrail 55.
-The winch 9 is driven to feed the wire rope 7 at a low speed, the first hydraulic cylinder 80 and the second hydraulic cylinder 90 are sequentially extended, and the first slider 60 and the second slider 70 are sequentially moved to the heel side and mounted. Take boat 4 out of the boat. At the time of unloading, the mounted boat 4 is restrained from shaking in the pitching direction because its keel portion hits the rail 52 of the keel guide 50.
The winch 9 is driven to wind the wire rope 7, the female metal fitting 19 is brought into contact with the top dead center stopper 25, and the wire rope 7 is loosened.
-The crew operates the holding ropes before and after the mounted boat 4 to keep the mounted boat 4 in a substantially parallel position to the side of the ship 1.
Remove each keel guide 50 and attach the safety handrail 55 on the deck 2.
-The safety pin 27 is pulled out, the winch 9 pulls out the wire rope 7, and the mounted boat 4 is lowered about 0.5 m at a low speed and stopped.
-The second hydraulic cylinder 90 is contracted, the second slider 70 is moved to the inner side of the ship, the mounted boat 4 is pressed against the side of the ship 1, and the staying ropes before and after the mounted boat 4 are connected to each of the ships 1 Secure to cleats. At this time, the mounted boat 4 takes a posture inclined about 5 ° toward the main boat 1 (see FIG. 3).
-Partially remove the boarding part of the safety handrail 55.
-Mount crew and equipment with the mounted boat 4 on the stomach.
Remove the front and rear retainers from each cleat, extend the second hydraulic cylinder 90, move the second slider 70 to the shore side, and swing the mounted boat 4 out to the maximum.
-The winch 9 is driven, the wire rope 7 is fed out, the mounted boat 4 is lowered and landed. When the mounted boat 4 descends, a crew member operates a boat rope (not shown) connected to the bow of the mounted boat 4 so that the mounted boat 4 maintains a posture substantially parallel to the main boat 1. .
Remove the ball hook 20 from the female fitting 19 of the mounted boat 4 and drop the wire rope 7 between the mounted boat 4 and the ship 1, then drive the winch 9 to wind the wire rope 7.

On the other hand, the operation when the mounted boat 4 is withdrawn during the navigation of the ship 1 is performed in the following procedure.
-Advance the loaded boat 4 in parallel with the main boat 1, connect the boat rope to the bow of the loaded boat 4, and stretch the boat rope between the main boat 1 and the loaded boat 4.
After driving the winch 9 and feeding the wire rope 7 onto the mounted boat 4, the ball hook 20 of the wire rope 7 is connected to the female fitting 19 of the mounted boat 4.
-The winch 9 is driven to wind the wire rope 7 at a medium to high speed. As a result, the mounted boat 4 is lifted from the sea, the mounted boat 4 is raised to the top dead center in the vicinity of the sheave 12 of the second slider 70, the mounted boat 4 is placed on the main boat 1, and the front and rear of the mounted boat 4 are placed. Secure the rope to each cleat of Vessel 1.
-With the mounted boat 4 on the stomach, move crew and equipment to the Vessel 1. At this time, the crew member is left in the mounted boat 4.
Remove the front and rear retainers from each cleat, extend the second hydraulic cylinder 90, move the second slider 70 to the shore side, and swing the mounted boat 4 out to the maximum.
-The winch 9 is driven to raise the mounted boat 4 at a low speed. When the female fitting 19 reaches the top dead center, the winch 9 is stopped and the occupant inserts the safety pin 27.
-Remove the safety handrail 55 and attach each keel guide 50 on the deck 2.
The winch 9 is driven to wind the wire rope 7 at a low speed, the second and first hydraulic cylinders 90 and 80 are sequentially contracted, and the second slider 70 and the first slider 60 are sequentially moved to the inside of the ship. The loaded boat 4 is put in the ship, and the side air bag or the like of the loaded boat 4 is applied to the inner wall 36 of the ship 1 and stopped. At the time of carrying-in, the mounted boat 4 is prevented from shaking in the pitching direction because its keel portion hits the rail 52 of the keel guide 50.
-The safety pin 27 is removed, the winch 9 pulls out the wire rope 7, the mounted boat 4 is lowered at a low speed, and is placed on the storage platform on the deck 2 and stopped.
Remove each keel guide 50 and attach the safety handrail 55 on the deck 2.
-Hang the lashing rope 8 on the loaded boat 4 and tie it up.
-Stop the operation of the hydraulic unit 33.

  As described above, the boat raising apparatus 5 includes the first slider 60 that moves in the substantially horizontal swinging direction above the mounted boat 4, and the second slider 70 that moves in the substantially horizontal swinging direction with respect to the first slider 60. The wire rope 7 fed out from the second slider 70 and the winch 9 that winds up the wire rope 7 are provided, and the mounted boat 4 is moved in the retracted state in which the first slider 60 and the second slider 70 are moved to the inside of the ship. Since the loaded boat 4 is loaded and withdrawn in the swinging state where the first slider 60 and the second slider 70 are moved to the outside of the boat, the loaded boat 4 can be moved in parallel. 1, the volume of the movement trajectory of the mounted boat 4 can be reduced, and the space occupied by the boat raising device 5 with respect to the main vessel 1 can be reduced.

  And since the installation space of the boat raising device 5 is provided along the ceiling portion 31 of the ship 1, a sufficient work space is secured on the deck 2, and the structure of the boat raising device 5 is operated on the deck 2. Can be avoided.

  The boat raising device 5 includes a pair of guide rails 32 that guide the first slider 60 to be movable in a substantially horizontal swinging direction, two first hydraulic cylinders 80 that drive the first slider 60, and the second slider 70. Are provided with two second hydraulic cylinders 90 and a sheave 12 which is connected to the second slider 70 and feeds the wire rope 7. Thus, the space occupied by the boat raising device 5 can be reduced.

  In the lifted state where the second slider 70 is moved to the outside of the boat with respect to the first slider 60, the rod 92 and the round pipe 72 of each second hydraulic cylinder 90 protrude from the first slider 60 to the outside of the boat. Since the first slider 60 and the second slider 70 are moved to the inner side of the boat, the size in the longitudinal direction of the boat raising device 5 is reduced, and the space occupied by the boat raising device 5 with respect to the main boat 1 is set. Can be reduced.

  Since the keel guide 50 extending along the keel part of the loaded boat 4 to be loaded and unloaded is detachably mounted on the deck 2 of the ship 1, the boat raising device 5 suspends the loaded boat 4 and moves it on the deck 2. When carrying in / out, this keel guide 50 hits the keel part of the mounted boat 4 to suppress shaking in the pitching direction of the mounted boat 4 and prevent the screw 18 of the mounted boat 4 from colliding with the deck 2. Can do.

  A ball hook 20 is coupled to the tip of the wire rope 7, and a female fitting 19 to which the ball hook 20 is detachably connected is provided on the mounting boat 4, and the female fitting 19 is detachably connected to the second slider 70. Since the safety pin 27 is provided, the wire rope 7 can be connected to and removed from the mounted boat 4 via the ball hook 20 easily and quickly, and the mounted boat 4 is carried in and out on the deck 2 of the ship 1. At this time, the mounted boat 4 can be prevented from falling through the safety pin 27.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  INDUSTRIAL APPLICABILITY The present invention can be used for a boat raising apparatus that suspends a loaded boat and carries it in and out of the vessel.

The top view of the boat raising apparatus which shows embodiment of this invention. Similarly, a side view of the boating apparatus. The front view of a boat raising apparatus. The top view which similarly shows the retracted state of a boating apparatus. The top view which similarly shows the swinging-out state of a boating apparatus. Similarly, a three-side view of a ball hook device. The partial side view of a boat raising apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vessel 2 Deck 4 Mounted boat 5 Lifting device 7 Wire rope 9 Winch 19 Female fitting 20 Ball hook 27 Safety pin 31 Ceiling part 32 Work stage 33 Hydraulic unit 50 Keel guide 60 First slider 70 Second slider 80 First hydraulic cylinder 90 Second hydraulic cylinder

Claims (5)

In a boat raising device for loading / unloading a loaded boat to / from the ship,
A first slider that moves in an approximately horizontal swinging direction above the mounted boat;
A second slider that moves in a substantially horizontal swinging direction with respect to the first slider;
A wire rope fed out from this second slider;
With a winch that winds up this wire rope,
The loaded boat is carried into the ship with the first slider and the second slider moved to the inside of the ship, respectively, and the first slider and the second slider are loaded in the swinged state, respectively moved to the outside of the ship. A boat raising device characterized in that a boat is loaded and unloaded. A pair of guide rails for movably guiding the first slider in a substantially horizontal swinging direction;
Two first hydraulic cylinders for driving the first slider;
Two second hydraulic cylinders for driving the second slider;
The boat raising apparatus according to claim 1, further comprising a sheave connected to the second slider and extending the wire rope.   The rod of the second hydraulic cylinder protrudes from the first slider to the outside of the boat in a swinging state in which the second slider is moved to the outside of the boat with respect to the first slider. Lifting device as described in 1.   The boat raising apparatus according to any one of claims 1 to 3, wherein a keel guide extending along a keel portion of a loaded boat to be carried in and out is detachably installed on a deck of the ship. A ball hook is coupled to the tip of the wire rope,
The mounting boat is provided with a female fitting to which this ball hook is detachably connected,
The boat raising apparatus according to any one of claims 1 to 4, further comprising a safety pin for detachably connecting the female fitting to the second slider.

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