JP2007302180A - Hull storage type boat lifting/storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a boat lifting/storage device capable of lifting and storing the boat by installing it on a door of a side port constitutable to a wind/rain-tight or water-tight section. <P>SOLUTION: The hull storage type boat lifting/storage device is provided with a boat storage section 2 sectioned at the gunwale side 1 of a hull, the door 7 having an upper end bonded to an opening of the boat storage section 2 through a hinge 8 so as to be openable and closable; a crane 14 installed on the inner surface of the door 7 and hanging up or down the boat 3; a boat support device 21 for supporting the boat 3; and a get-on platform 30 for getting on the boat 3 installed on the boat storage section 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a boat lifting device mounted on a ship or the like, and more particularly to a hull retractable boat lifting device that is integrally installed on a side port door.

  A davit-type lifting device is generally known as a device for lifting a boat such as a lifeboat, rescue boat or work boat. For example, as shown in Patent Document 1, the davit-type lifting device is configured such that a davit is rotatably installed on the deck on the heel side, or a frame that supports the davit so as to be reciprocally slidable is provided on the heel side deck and the upper structure wall. It has a structure such as fixing. In this way, the conventional davit-type lifting device is installed at a specific location on the ship because structures such as davits and support frames are fixed to the deck or superstructure walls, etc. ing. In addition, it is installed on the exposed deck because of its use, and its installation location is not a windtight or watertight compartment.

  On the other hand, a lifting device has also been proposed in which a swivel crane for lifting or lowering a boat is installed in an opening provided in the heel side portion (see, for example, Patent Document 2). This lifting device is a structure which installs a turning crane in the ceiling in the opening part in which the heel side is an open state, and the door is not provided.

JP 2002-87376 A JP 2006-1442 A

Since the revolving device shown in Patent Document 2 has a swivel crane installed on the ceiling in the opening (hereinafter also referred to as a side port) that remains open, the rain and rain is similar to that installed on the exposed deck. The opening is not a wind-tight or water-tight compartment. For these reasons, the conventional lifting device has the following problems.
(1) When installing structures such as davits and support frames, and equipment such as winches as on the deck and bridge walls as in Patent Document 1, or as described in Patent Document 2, the swing crane is installed in the side port. When installing on the ceiling, it is necessary to install the installation place in a place that does not affect the construction of the heat insulating material on the back side, which makes the heat insulating material construction process complicated and causes an increase in cost.
(2) Since the boat and the lifting device are directly exposed to seawater splashes, wind and rain, dust, ultraviolet rays, toxic gas, radioactivity, etc., the deterioration progresses, and in the case of toxic gas, radioactivity, etc., the removal process is extremely difficult. It is. It also has a significant impact on the maintenance of the lifting equipment.
(3) Crew passengers are directly affected by the weather until they enter the boat.
(4) Since there are many places where crew passengers get into a boat, the location is limited to a specific narrow place, there is a risk of falling, and safety is not sufficient.
(5) If the lifting device is exposed to the outside, it has complex radio wave reflectivity, so the superiority of radio stealth is lost in the case of ships and the like.
(6) The stability and design of the ship will deteriorate.
(7) If the side port is left open, measures against illegal intruders must be taken.

  The present invention has been made in view of the problems as described above, and provides a boat lifting device that is installed on a door of a side port that can be configured in a wind-tight or water-tight compartment to enable the boat to be lifted. With the goal.

  In order to solve the above-described problems, a hull retractable boat lifting apparatus according to the present invention includes a boat storage compartment that is formed in a berth portion of the hull, and an upper end portion of the opening of the boat storage compartment via a hinge portion. A door that can be opened and closed, a crane that is installed on the inner surface of the door and lifts or lowers the boat, a boat support device that supports the boat, and a boat storage compartment that is installed in the boat to enter the boat Boarding platform.

  Since the present invention is configured as described above, the boat lifting device can be stored in the hull. Therefore, crew passengers can board the boat without being influenced by the weather or the like. In addition, since the boat and the lifting device are less affected by seawater splashes, wind and rain, ultraviolet rays, dust, etc., the deterioration is unlikely to occur, contributing to the reduction of maintenance costs. Furthermore, it is advantageous for NBC (radioactivity, biological, chemical weapon) countermeasures and illegal intruder countermeasures on ships.

The door is configured to be substantially flush with the heel side when closed, and to close the boat storage compartment.
With this configuration, radio stealth can be ensured in a ship or the like, and the boat storage compartment can be made into a weather-tight or water-tight compartment by making the side port door wind-tight or water-tight.

The boat support device may be a fixed type, but the boat pedestal is preferably configured to be liftable.
By configuring the boat support of the boat support device to be liftable, it is possible to support the boat and passengers silently without giving an impact.

Moreover, although the said boat support apparatus may be installed in the floor surface of the said boat storage compartment, it is preferable to install in the inner surface of the said door.
By configuring in this way, the crane and the boat support device constituting the hull retractable boat lifting device of the present invention are entirely installed on the inner surface of the door of the side port, and the boat storage compartment inside is the mechanical structure. Since it can be formed as a clear space without the installation of the boat, the boat lifting device of the present invention can be constructed irrespective of the heat insulating material construction process on the back side of the wall surface of the boat storage compartment.

The boarding platform has a substantially U-shaped cutout portion so as to surround the boat from three directions, and a cushioning material is provided in the cutout portion to suppress lateral shaking when the boat is stored. Further, the cushioning material is also provided on the inner surface of the door.
With this boarding platform configuration, the boat can be boarded from any three directions, and a flat and wide space can be secured. Further, by providing a buffer material on the substantially U-shaped notch and the door of the boarding platform, it is possible to suppress the lateral shaking of the boat during storage, and to soften the impact with the boarding platform and the door.

The crane includes a winch attached to the door or the ceiling of the boat storage compartment, a boom attached to the door and having a pair of pulleys at a front end, a hook at a lower end, and the hook via the pulley. It is set as the structure provided with the wire rope connected with the winch.
With this configuration, when the door is fully opened, the boat lifting device can be put out by the boom having a certain length.

  When the boat is stored, the boat is fixed to the boat support device by a plurality of lashes having a fastening tool such as a turnbuckle.

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

Embodiment 1 FIG.
1 to 7 show a first embodiment of the present invention, and FIG. 1 is a schematic sectional view showing a boat retracted state of a hull retractable boat lifting device according to the first embodiment. It is sectional drawing when seeing the front from. 2 is a schematic side view when the port side is seen from the center line of the boat of FIG. 1, FIG. 3 is a schematic plan view showing a portion of the boat and boarding platform of FIG. 1, and FIGS. 4 to 6 are when the boat is lowered. FIG. 7 is a hydraulic circuit diagram showing an example of a hydraulic circuit for driving the hull retractable boat lifting device.

  The hull retractable boat lifting device 10 is configured to form a boat storage section 2 in a portion of the hull side 1 of the hull and store the boat 3 in the boat storage section 2. FIG. 1 shows a boat lifting device 10 mounted on the port side, and a boat lifting device (not shown) having a similar configuration is also mounted on the starboard side.

  The boat storage section 2 is not particularly limited, but is formed as a section including a ceiling 4 made of an upper deck, a floor 5 made of a lower deck, and side walls 6. Inside the boat storage compartment 2, a boarding platform 30 having a flat and large space for boarding the boat 3 is installed. The boarding platform 30 will be described in detail later. When the door is closed, a door (side port door) 7 having substantially the same inclination angle or substantially the same plane as the heel side 1 opens and closes the opening of the boat storage compartment 2 via the hinge portion 8 at the upper end. Are coupled to the mounting member 9 of the ceiling 4. Further, a seal member 11 such as a rubber packing is attached to the inner surface of the door 7 so as to be watertight when closed, and the seal member 11 comes into contact with an edge plate 12 provided around the opening so as to be sealed. It has become. Further, the seal structure of the door 7 may be a metal touch. Further, the door 7 has, for example, a wind-tight or water-tight structure according to the section requirements of the boat storage section 2. 2 is installed on the outside of the hull, it should be originally shown by a broken line, but is shown by a solid line for easy understanding.

  As a means for opening and closing the door 7, the hydraulic cylinder 13 is pivoted to the door 7 (here, a boom 16 described later) and the mounting member 9 of the ceiling 4 so that both ends (each end of the cylinder case and the rod) can rotate about the shaft. It is worn. Note that one end of the hydraulic cylinder 13 can be attached to the ceiling 4 without the attachment member 9 interposed. Further, instead of the hydraulic cylinder 13, a rotation system using the hinge portion 8 as a torque actuator or a mechanism for opening and closing the door 7 by another mechanism may be used. The door 7 is a single-opening type in which the lower side opens upward, and rotates about 90 degrees in the clockwise direction.

  A pair of front and rear cranes 14 for lifting or lowering the boat 3 is installed on the inner surface of the door 7. Each crane 14 includes a winch 15 attached to the inner surface of the door 7, a boom 16 attached to the inner surface of the door 7, a pair of pulleys 17 rotatably provided at the tip of the boom 16, and a lower end. A wire rope 19 having a hook 18 (see FIG. 2), the base end of which is connected to the drum of the winch 15 via a pulley 17, and an interlocking shaft (universal shaft) 20 that drives the front and rear winches 15 synchronously. It is the composition provided with. Although the boom 16 is a fixed boom having a fixed length, it can also be an extendable telescopic boom. In this case, a hydraulic cylinder or the like for expansion and contraction is further required.

  A pair of elevating boat support devices 21 for supporting the boat 3 is installed on the inner surface of the door 7. Each boat support device 21 includes a mounting base 22 attached to the inner surface of the door 7, a boat receiving base 23 (comprising a lifting frame and a receiving base body) provided on the mounting base 22 so as to be able to be raised and lowered, and a boat receiving base. 23, and an interlocking shaft (universal shaft) 25 that drives the front and rear boat cradles 23 synchronously. The elevating mechanism 24 includes, for example, a hydraulic motor, a ball screw driven by the motor, and a boat support 23 screwed to the ball screw (see FIG. 7).

  As shown in FIG. 2, the boat 3 is attached with a hanging metal fitting 26 connected to the hooks 18 of the wire ropes 19 so that the boat 3 is lifted at two locations on the front and rear sides (two-point suspension). method). Further, a lashing cable 27 for fixing the front and rear of the boat 3 at the time of storage is connected to the mounting base 22 and the boat receiving base 23, respectively. The lashing cord 27 is provided with a turnbuckle 28 for binding or relaxing it.

  The boat storage section 2 may be provided with a boarding platform 30 having a flat and large space for boarding the boat 3 as shown in FIGS. 1 and 3. The boarding platform 30 is installed at almost the same height as the boat 3 in the retracted state, and a substantially U-shaped cutout 31 is provided so as to surround the boat 3 so as to be able to get on and off from any three directions except the door 7 side. It has been. A cushioning material 32 such as a rubber cushion is attached to the end surface of the notch 31. A cushioning material 33 made of the same material is also attached to the door 7 in the front-rear direction. These shock absorbers 32 and 33 can suppress the lateral swing of the boat 3 when the boat is stored, and can soften the impact on the boat 3 when colliding with the boarding platform 30 or the door 7. In FIG. 1, the platform 30 is mainly mounted on the side wall 6, but it can be installed as a structure on the floor 5 like a general stage attached to the deck. In addition, the cushioning material may be installed on the column by taking out the column from the boat support device, or the buffer material may be attached to the platform by providing a platform dedicated to the cushioning material on the deck.

  Next, the boat lowering operation of the boat lifting apparatus 10 configured as described above will be described with reference to FIGS.

  First, after each lashing rope 27 is loosened by the turnbuckle 28 and removed from the boat 3, the boat cradle 23 is lowered by the lifting mechanism 24 as shown in FIG. In the case of a fixed boat support device having no lifting mechanism on the boat cradle, the winch 15 is actuated to wind the wire rope 19 and the boat is lifted from the boat cradle. As a result, the boat 3 moves away from the boat cradle 23 and enters a free suspended state. Next, as shown in FIGS. 4 and 5, pressure oil is sent to the hydraulic cylinder 13 for opening and closing the door, the rod is extended, and the door 7 is rotated upward about the hinge portion 8 to open. Then, as shown in FIG. 6, the door 7 is completely opened horizontally. That is, at this time, the crane 14 and the boat 3 are in the swing-out state. Thereafter, the winch 15 is operated to feed out the wire rope 19 and the boat 3 is lowered onto the water surface. When the boat 3 is stored in the original state, the above operation may be performed in reverse.

Each drive mechanism that performs the above operation is configured by, for example, a hydraulic circuit shown in FIG. This hydraulic circuit will be described. In FIG. 7, the left side represents the winch mechanism of the boat 3, the center represents the opening / closing mechanism of the door 7, and the right side represents the lifting mechanism of the boat cradle 23.
A main pump 42 and an auxiliary pump 43 driven by the electric motor 40 suck in hydraulic oil from the oil tank 41 and supply pressure oil to the hydraulic circuit. Pressure oil discharged from the main pump 42 is distributed to a drive source (actuator) by electromagnetic valves 44, 45 and 46.
When the solenoid valve 44 is actuated to the right side, the pressure oil supplied from the main pump 42 is supplied to the hydraulic motor 51 from the left side, and the hydraulic motor 51 rotates clockwise. As a result, the drum of the winch 15 connected to the shaft of the hydraulic motor 51 also rotates in the same direction, the wire rope 19 is fed out, and the boat 3 descends. The pressure oil that has flowed out to the right side of the hydraulic motor 51 passes through the electromagnetic valve 44 again, returns to the oil tank 41 through the strainer 53. When the electromagnetic valve 44 moves to the left side, the pressure oil is supplied to the hydraulic motor 51 from the right side, so that the boat 3 rises. The auxiliary pump 43 is for supplying a low pressure to the outlet of the hydraulic motor and for smoothly rotating the hydraulic motor 51. 47 and 48 are the pressure regulating valves of the respective pumps, which adjust the amount of force to be wound up. The electromagnetic valve 49 is an electromagnetic valve that reduces the relief pressure of the pressure regulating valve 47 to reduce the load on the motor 40 when the motor is started.
When the solenoid valve 45 moves to the right side, pressure oil is supplied to the hydraulic cylinder 13 from the left side, and the rod retracts, so that the door 7 connected to the rod is closed. When the solenoid valve 45 moves to the left side, the rod of the hydraulic cylinder 13 extends and the door 7 opens.
When the solenoid valve 46 moves to the right side, pressure oil is supplied to the hydraulic motor 52 from the left side, and the hydraulic motor 52 rotates clockwise, so that the ball screw 29 also rotates in the same direction and is screwed into the ball screw 29. The table 23 rises. When the electromagnetic valve 46 moves to the left side, the ball screw 29 rotates in the opposite direction, so that the boat pedestal 23 descends.

The hull retractable boat lifting device 10 according to the present embodiment is provided with a crane 14 for lifting or lowering a boat 3 on the inner surface of a side port door that can be opened and closed on the shore side 1 and a liftable boat support device 21. Therefore, it has the following effects.
(1) The boat storage compartment 2 can be, for example, a wind-tight or water-tight compartment.
(2) Since it is not necessary to attach the lifting device to the hull deck or the hull wall as in the prior art, the mounting process of the lifting device is flexible. A convenient process for the door and boat lifting device can be assembled, resulting in cost reduction.
(3) The boat can be completely stored inside the hull, and the storage location can be in a wind-tight or water-tight compartment. Therefore, passengers can get on the boat without getting wet even in rainy weather.
(4) Since a boarding platform for boarding from three directions is installed, a large boarding space can be secured.
(5) Since the door provided on the heel side is always in a state where the boat storage compartment is closed, it is advantageous for measures against NBC (radioactivity, biological, chemical weapons) and illegal intruders.
(6) Since the door is substantially the same as the inclination angle of the hull side wall, it is easy to ensure radio stealth.
(7) Since the boat lifting device is housed in the ship, there is little deterioration of parts and oils and fats due to ultraviolet rays, seawater splashes, wind and rain, and dust. Therefore, it contributes to the reduction of maintenance costs including life cycle costs. In addition, the degree of freedom in design is improved.
(8) In the case of a watertight structure, the boat storage compartment can be a watertight compartment, and the stability of the ship is improved.

Embodiment 2. FIG.
FIG. 8 is a schematic cross-sectional view of a hull retractable boat lifting apparatus 10 showing Embodiment 2 of the present invention. The present embodiment is the same as the first embodiment except that a boat support device (including a lift type, hereinafter referred to as a boat support device) 21 is installed on the floor 5 of the lower deck. Although not shown, the lifting mechanism 24 in the case where the boat support device 21 is liftable is incorporated below the floor 5. Although the boarding platform 30 is fixed to the side wall, it may be installed as a structure on the floor 5 like a general stage attached to the deck.

  In this Embodiment, since the boat support apparatus 21 is not installed in the door 7, there exists an advantage by which the load which the door 7 bears becomes small correspondingly. Moreover, since the raising / lowering stroke of the boat support apparatus 21 can be made smaller than Embodiment 1, the height of the boat storage compartment 2 can be made low. However, when installing the boat support device 21 on the floor 5, it is necessary to install the boat support device 21 in accordance with the heat insulating material construction time under the floor 5.

Embodiment 3 FIG.
FIG. 9 is a schematic cross-sectional view of a hull retractable boat lifting device 10 showing Embodiment 3 of the present invention. The present embodiment is the same as the first embodiment except that the boat support device 21 is installed on the floor 5 and the winch 15 is installed on the ceiling 4 of the boat storage compartment 2. Although not shown, the lifting mechanism of the boat support device 21 is incorporated below the floor 5. Although the boarding platform 30 is fixed to the side wall, it may be installed as a structure on the floor 5 like a general stage attached to the deck.

  In the present embodiment, since the boat support device 21 and the winch 15 are not installed on the door 7, there is an advantage that the load borne by the door 7 is further smaller than that of the second embodiment. Moreover, since the raising / lowering stroke of the boat support apparatus 21 can be made small similarly to Embodiment 2, the height of the boat storage compartment 2 can be made low. However, when installing the winch 15 and the boat support device 21 and the boarding platform 30 in a structure that supports the floor from the floor, it is necessary to install them in accordance with the time of heat insulation construction on the upper side of the ceiling 4 and the lower side of the floor 5. . Further, since the winch 15 is installed on the ceiling 4 of the boat storage compartment 2, when the boat 3 is lowered, it is necessary to feed the wire rope 19 in synchronism with the opening operation of the door 7.

Embodiment 4 FIG.
10 to 12 show a fourth embodiment of the present invention, and show an example of RHIB (Rigid Hull Inflatable Boat) equipment. This is a system in which the RHIB boat 3 is lifted at one location (one-point suspension system). FIG. 10 is a schematic cross-sectional view of the present embodiment, FIG. 11 is a side view of the port 3 viewed from the center line of the boat 3, and FIG. 12 is a schematic plan view of the boat and the boarding platform portion.

The present embodiment is the same as the first embodiment except that the RHIB boat 3 has a one-point suspension system. Therefore, the number of cranes 14 is one, and a boom 16 having a pair of pulleys 17 is attached to the door 7 so as to lift the position of the center of gravity of the RHIB boat 3.
Thus, the boat 3 can be stored in the hull regardless of the type of the boat 3 and the lifting method.

Embodiment 5 FIG.
FIG. 13 is a schematic cross-sectional view of a hull retractable boat lifting apparatus 10 showing a fifth embodiment of the present invention. In the present embodiment, the boarding platform 30 is configured by the boarding deck 34. Other configurations are the same as those of the first embodiment.
Since a large space can be secured as the boat storage section 2, a plurality of boats 3 can be stored in the same section. In this case, the boarding place for each boat 3 can be secured by the continuous boarding deck 34, and the quickness and safety against an emergency situation are further improved. The door 7 may be provided for each boat 3.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view showing a boat retracted state of a hull retractable boat lifting device in Embodiment 1 of the present invention. The schematic side view when the port side is seen from the center line of the boat of FIG. FIG. 2 is a schematic plan view showing a boat and a boarding platform portion of FIG. 1. Explanatory drawing which shows the operation | movement procedure when lowering a boat. Explanatory drawing which shows the operation | movement procedure following FIG. Explanatory drawing which shows the operation | movement procedure following FIG. The hydraulic circuit diagram which shows an example of the hydraulic circuit for the drive of a hull retractable boat pick-up device. The schematic sectional drawing of the hull retractable boat lifting apparatus which shows Embodiment 2 of this invention. The schematic sectional drawing of the hull retractable boat lifting apparatus which shows Embodiment 3 of this invention. The schematic sectional drawing of the hull retractable boat lifting apparatus which shows Embodiment 4 of this invention. FIG. 11 is a schematic side view when the port side is viewed from the center line of the boat of FIG. 10. FIG. 11 is a schematic plan view of the boat and boarding platform portion of FIG. 10. The schematic sectional drawing of the hull retractable boat lifting apparatus which shows Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side side, 2 Boat storage compartment, 3 Boat, 4 Ceiling, 5 Floor, 6 Side wall, 7 Door, 8 Hinge part, 9 Mounting member, 10 Hull retractable boat lifting device, 11 Seal member, 12 Edge board, 13 Hydraulic pressure Cylinder, 14 crane, 15 winch, 16 boom, 17 pulley, 18 hook, 19 wire rope, 20 interlocking shaft, 21 boat support device, 22 mounting base, 23 boat cradle, 24 lifting mechanism, 25 interlocking shaft, 26 hanging bracket , 27 lashing cord, 28 turnbuckle, 29 ball screw, 30 boarding platform, 31 notch, 32 cushioning material, 33 cushioning material, 34 boarding deck, 40 electric motor, 41 oil tank, 42 main pump, 43 auxiliary pump, 44 electromagnetic Valve, 45 Solenoid valve, 46 Solenoid valve, 47 Pressure regulating valve, 48 Pressure regulating valve, 49 Solenoid valve, 51 Hydraulic mode , 52 hydraulic motor, 53 a strainer.

Claims (8)

A boat storage compartment formed on the side of the hull;
A door whose upper end is coupled to the opening of the boat storage compartment so as to be openable and closable via a hinge;
A crane installed on the inner surface of the door for lifting or lowering the boat;
A boat support device for supporting the boat;
A boarding platform installed in the boat storage compartment for boarding the boat;
A hull retractable boat lifting device characterized by comprising:   2. The hull retractable boat lifting device according to claim 1, wherein the door is configured so as to be substantially flush with the dredging side when closed, and the boat storage section has a weather-tight or water-tight structure. .   The boat support device according to claim 1, wherein the boat support device is configured such that a boat support is liftable.   3. The hull retractable boat lifting device according to claim 1, wherein the boat support device is installed on an inner surface of the door.   The boarding platform has a substantially U-shaped notch so as to surround the boat from three directions, and the notch is provided with a cushioning material that suppresses lateral shaking during storage of the boat. The hull retractable boat lifting device according to any one of claims 1 to 4.   6. The hull retractable boat hoisting device according to claim 5, wherein a cushioning material is provided on an inner surface of the door to suppress lateral shaking during storage of the boat.   The crane includes a winch attached to the door or the ceiling of the boat storage compartment, a boom attached to the door and having a pair of pulleys at a front end, a hook at a lower end, and the hook via the pulley. The hull retractable boat lifting device according to claim 1, further comprising a wire rope connected to the winch. 8. The hull retractable type according to claim 1, wherein the boat is fixed to the boat support device by a plurality of lashes having a fastening tool such as a turnbuckle during storage. Boat lifting equipment.

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