JP2018108790A - Lifting device for boat, ship and lifting method for boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting device for a boat, a ship and a lifting method for a boat capable of suppressing generation of a vortex in a ramp way for lifting the boat in a state that a mother ship is sailing and capable of smoothly and safely carrying out lifting of the boat to the mother ship.SOLUTION: A mother ship 20 is provided with a ramp way 2 extending from an opening unit 23 of the mother ship 20 to water. The ramp way 2 partially or entirely having a structure capable of transmitting water flow or a structure capable of transmitting water flow when lifting the boat 30, is extended from an opening unit 23 into the water, and the boat 30 is lifted inside the mother boat 20 via the ramp way 2 from on-water.SELECTED DRAWING: Figure 2

Description

  More particularly, the present invention relates to a boat-lifting device, a boat, and a boat-lifting method, and more particularly, to smoothly and safely allow a boat to be lifted to a mother ship even when the mother ship is running. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boat-lifting device, a ship, and a boat-lifting method that can be performed.

  A mother ship equipped with a boat that can be unloaded is used for patrol rescue at sea and marine surveys. When performing lifesaving work or landing on a small island, the ship is started from the mother ship and saved by the boat. And landing work is being carried out. Conventionally, the stern hatch (transom hatch) of the mother ship is opened by turning over to the water or lowered, and the stern hatch is used as a passage to start from the mother ship and to the mother ship. We are collecting.

  In connection with this, a method has been proposed in which a boat guidance platform is provided at the stern of the mother ship so that it can exit and exit outward from the hull, and the boat is collected on the mother ship through this platform (for example, Patent Document 1).

  However, conventional stern hatches and platforms are configured with members that do not allow water to pass through. Therefore, when the stern hatch or platform is extended underwater while the mother ship is sailing, the water flow from the bottom of the mother ship hits the stern hatch or platform and is caught in these stern sides and swirls. Will occur. Due to the influence of this vortex, it is difficult for the boat to move in the vortex when entering the stern hatch or platform, making it difficult to stabilize the course, and the mother ship also receives a force that is swung in the left-right direction at the stern. Since the course of the mother ship is unstable, the generation of this vortex has been a major obstacle to the harvesting work.

Japanese Utility Model Publication No. 59-156888

  The present invention has been made in view of the above situation, and can suppress the generation of vortices caused by the rampway for picking up the boat while the mother ship is sailing, so that the boat can be lifted to the mother ship. It is an object of the present invention to provide a boat lifting device, a ship, and a boat lifting method that can be smoothly and safely performed.

  In order to achieve the above-mentioned object, a boat lifting device of the present invention is a lifting device for lifting a boat from the opening of the mother ship to the inside on the water, and extends from the opening to the water. The rampway is provided, and a part or all of the rampway has a structure capable of transmitting a water flow or a structure capable of transmitting a water flow when the boat is lifted.

  The structure through which the water flow can be transmitted may be a lattice structure or a net-like structure, but it is a flap type. When the rampway is extended into the water, the flap is rotated in the direction of the water flow. Can pass between the flaps, and when the rampway is housed and forms part of the hull such as the stern, the flaps are rotated so that the front and rear ends of adjacent flaps overlap so that no water is passed. A configuration may be adopted.

  According to this configuration, when the ramp way is extended from the opening of the mother ship into the water, the ramp way has a structure that allows water flow, that is, a structure having water permeability, so that the mother ship can run. In such a state, it is difficult for water flow disturbances and vortices to occur near the rampway. As a result, on the mother ship side, the course is stabilized and the resistance by the rampway is also reduced, so the speed reduction can be suppressed. On the boat side, the ship is not affected by the vortex generated from the rampway, so the boat is stable. In this state, it is possible to enter the rampway, and the boat can be smoothly and safely withdrawn from the mother ship.

  In the above-mentioned boat lifting device, the rampway has a lattice structure in a state where it is installed on the mother ship, and the cross-sectional shape perpendicular to the left-right direction of the mother ship of the members forming the lattice structure is a flat plate shape or a circle shape. It is also possible to have a configuration that is either a shape, an ellipse shape, a streamline shape, or some combination of shapes. By making the ramp way into a lattice structure and devising the shape of the members that make up the ramp way in this way, it is possible to suppress the generation of eddy currents from the members and the increase in resistance caused by the members. It becomes easy to suppress this.

  In any one of the above-mentioned boat hoisting devices, if the guide for guiding the boat is provided on the side of the rampway, the course of the boat on the rampway can be further stabilized. The risk of boats falling from the rampway can be greatly reduced. This guide may consist of a fence provided on the side of the rampway, or it may consist of a rampway and a car that is movable on the rampway, and the rampway itself is a car with the rear part released. A mold-shaped ramp way may be used.

  In any one of the above-mentioned boat lifting and unloading devices, when the structure is provided with a vibration suppressing mechanism that suppresses the fluctuation of the rampway when extended to the water, the vibration suppressing mechanism allows the mother ship to be used in a wave or the like. Even in the case of swaying, the position and posture of the rampway can be stabilized. This makes it easier for boats to enter the rampway. As this sway suppression mechanism, for example, a fixed vertical fin or a horizontal fin is provided at the rear end of the ramp way to control the flow of water in the width direction of the mother ship. It is possible to suppress the shaking in the left-right direction, and to suppress the rampway and the mother ship roll and the mother ship pitch with a fixed horizontal fin that controls the flow of the water flow in the vertical direction.

  In the above-mentioned boat lifting device, the vibration suppression mechanism detects a fluctuation of the rampway, a suppression force generation member that generates a suppression force or a suppression moment for suppressing the fluctuation of the rampway, and the oscillation It can also be configured to include a drive device that operates the suppression force generating member based on the detection data of the sensor and a control device that controls the drive device. Examples of the vibration sensor include an acceleration sensor and a positioning sensor. The restraining force generating member includes a movable horizontal fin that generates lift in the vertical direction with respect to the rampway that is extended underwater, and a movable that generates lift in the width direction of the mother ship with respect to the rampway. For example, vertical fins of the formula can be exemplified.

  With this configuration, it is possible to more accurately suppress the swing of the rampway and the mother ship than when the suppression force generating member is configured with a fixed vertical fin or a fixed horizontal fin. This makes it possible to maintain the position and posture of the rampway at a constant level even when the mother ship is shaken in a wave or the like, and makes it easier for boats to enter the rampway.

  In order to achieve the above object, the ship of the present invention is configured to include the above-described boat-lifting device, and can exhibit the same effects as the boat-lifting device.

  A method for picking up a boat for achieving the above object is a method for picking up a boat from the opening of the mother ship on the water, and includes a ramp way extending from the opening to the water. A part or all of the rampway has a structure that allows the passage of water, or a rampway that has a structure that allows the passage of water when the boat is lifted, extends from the opening to the water, and It is characterized in that the boat is lifted from the surface of the mother ship via the rampway.

  According to this method, by extending a rampway having a structure that allows water flow to penetrate from the opening of the mother ship to the water, even if the mother ship is sailing, The boat can be smoothly and safely withdrawn into the mother ship through the rampway with few vortices.

  According to the boat lifting / retracting device, ship, and boat lifting / retracting method of the present invention, when the ramp way is extended into the water from the opening of the mother ship, the ramp way has a structure that allows water flow to pass therethrough. Even when the mother ship is sailing, it is possible to suppress the generation of vortices due to the rampway for picking up the boat, and to smoothly and safely pick up the boat to the mother ship.

It is explanatory drawing which shows typically the condition which accommodated the ramp way in the inner side of the mother ship in the boat lifting apparatus of 1st Embodiment concerning this invention. It is explanatory drawing which shows typically the condition where the rampway of the lifting device of FIG. 1 is extended underwater from the opening part of the mother ship, and the boat is collected in side sectional view. It is explanatory drawing which shows typically the condition of FIG. 2 by planar cross section view. It is explanatory drawing which shows typically the condition which accommodated the ramp way in the inside of the mother ship in the boat lifting apparatus of 2nd Embodiment which concerns on this invention by a side sectional view. It is explanatory drawing which shows typically the condition which extended the lampway of the lifting apparatus of FIG. 4 from the opening part of the mother ship into the water in a side sectional view. It is explanatory drawing which shows the condition of FIG. 5 typically by planar cross section. It is explanatory drawing which shows typically the condition which has extended the ramp way underwater from the opening part of the mother ship in the boat lifting apparatus of 3rd Embodiment which concerns on this invention. It is explanatory drawing which shows typically the condition of FIG. It is explanatory drawing which shows typically the condition which made the boat approach into the ramp way of the lifting device of FIG. 7, and closed the opening-and-closing gate. FIG. 10 is an explanatory diagram schematically showing the situation of FIG. 9 in a plan view. It is explanatory drawing which shows typically the condition which pulled up the ramp way of the lifting apparatus of FIG. 9 to the mother ship, and picked up the boat inside the mother ship in the side sectional view. It is explanatory drawing which shows typically the condition which accommodated the ramp way in the boat lifting apparatus of 4th Embodiment which concerns on this invention by a side sectional view. It is explanatory drawing which shows typically the condition which has extended the lampway of the lifting device of FIG. 12 from the opening part of the mother ship in water by a side sectional view. It is explanatory drawing which shows typically the condition which accommodated the ramp way in the boat lifting apparatus of 5th Embodiment which concerns on this invention by a side sectional view. It is explanatory drawing which shows typically the condition where the rampway of the lifting device of FIG. 14 is extended underwater from the opening part of the mother ship, and the boat is collected by side sectional view. It is explanatory drawing which shows typically the condition which accommodated the ramp way in the boat harvesting apparatus of 6th Embodiment which concerns on this invention by a side sectional view. It is explanatory drawing which shows typically the condition which is making the lampway of the lifting apparatus of FIG. 16 extend underwater from the opening part of a mother ship. FIG. 11 is an explanatory view schematically showing the ramp way in a front sectional view in a boat lifting apparatus according to still another embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a boat lifting and lowering apparatus, a ship, and a boat lifting and lowering method according to embodiments of the present invention will be described with reference to the drawings.

  The boat lifting device of the present invention is a device for lifting a manned or unmanned boat from the opening of the mother ship to the inside of the mother ship on the water. The boat here means a ship or an amphibious vehicle that can be mounted on the mother ship. More specifically, examples of the boat include a landing boat, an air cushion boat, a disaster countermeasure vehicle equipped with a water propulsion device for running on water, a water rescue vehicle, and a military vehicle. The present invention is not particularly limited in the size and type of ships and boats serving as mother ships, and can be applied to ships and boats serving as various mother ships.

  The directions such as the front-rear direction, the left-right direction, and the up-down direction used in the following description indicate directions with reference to the mother ship on which the boat lifting device is installed. The front-rear direction indicates the direction of the length of the mother ship, and the forward and rear directions indicate the bow side and the stern side of the mother ship, respectively. The horizontal direction and the vertical direction indicate the width direction and depth direction of the mother ship, respectively.

  The boat lifting device 1 (hereinafter referred to as the lifting device 1) according to the first embodiment of the present invention illustrated in FIGS. 1 to 3 is installed in the vicinity of the opening 23 of the mother ship 20. As shown in FIG. 1, the mother ship 20 of this embodiment includes a stern hatch 22 at the stern end 21. As shown in FIG. 2, the stern hatch 22 is rotated rearward around a hinge provided at the upper side, thereby forming an opening 23 that allows the outside and the inside of the mother ship 20 to communicate with each other. Inside the mother ship 20, a slope 24 that slopes downward from the rear end portion of the inner deck to the stern end portion 21 is provided. Inside the mother ship 20, a wire 25 used for lifting the boat 30 when the boat 30 is lifted and a winch device 26 for winding and unwinding the wire 25 are provided.

  As shown in FIG. 2, the lifting device 1 includes a ramp way 2 that extends into the water from the opening 23, and the ramp way 2 has a structure capable of transmitting a water flow. The lifting device 1 of this embodiment further includes an exit / retreat mechanism 5 that deploys and stores the ramp way 2.

  As shown in FIG. 3, the rampway 2 of this embodiment is installed in the mother ship 20, and has a plurality of vertical members 4 extending in the front-rear direction and a plurality of horizontal members 3 extending in the left-right direction. It has a lattice structure composed of The vertical members 4 are arranged at intervals in the left-right direction, and the horizontal members 3 are arranged at intervals in the front-rear direction. The vertical member 4 and the horizontal member 3 are joined to each other.

  As shown in FIGS. 2 and 3, the vertical member 4 and the horizontal member 3 are constituted by plate-like members, and the cross-sectional shape perpendicular to the left-right direction of the mother ship 20 of the horizontal member 3 is a flat plate shape. . The ramp way 2 is installed at the same inclination angle as the slope 24 so as to follow the slope 24 of the mother ship 20. At the upper front part of the two vertical members 4 constituting both sides of the lampway 2, connection portions 2a to which the string-like bodies 5a can be connected are provided.

  As shown in FIG. 3, the retracting mechanism 5 of this embodiment includes two string-like bodies 5a, and a reel device (winding device) 5b for winding and unwinding each string-like body 5a, It is composed of two L-shaped angles 5d that serve as housing rails for guiding the lampway 2. As the string-like body 5a, for example, a wire or a rope is used. One end of the string-like body 5a is connected to a connecting portion 2a provided on the ramp way 2, respectively. The other end of the string-like body 5a is connected to a reel device 5b arranged in front of the slope 24, respectively. A pulley 5c for changing the extending direction of the string-like body 5a is provided between the ramp way 2 and the reel device 5b, and the middle position of the string-like body 5a is hung on the pulley 5c. ing.

  Each of the angles 5d extends in the front-rear direction so as to be along the upper surface of the slope 24. The two angles 5d are arranged in parallel with a gap in the left-right direction. The interval between the vertical surfaces (surfaces in the vertical direction) of the angle 5 d extending perpendicular to the slope 24 is set to be approximately the same as the width of the ramp way 2. The lampway 2 is installed so as to be fitted between the two elevation surfaces of the angle 5d.

  Next, a method for picking up the boat 30 to the mother ship 20 using the picking device 1 will be described.

  As shown in FIG. 2, first, the stern hatch 22 is opened with the mother ship 20 running. Next, the ramp way 2 is extended from the opening 23 into the water. In this embodiment, the string-like body 5a is fed out from the reel device 5b, and the ramp way 2 is slid rearward along the angle 5d using the slope of the slope 24. Then, the feeding of the string-like body 5a from the reel device 5b is stopped at the position where the rear part of the ramp way 2 reaches the desired water depth, and the ramp way 2 is fixed to the mother ship 20.

  In the present invention, since the ramp way 2 is structured to allow the water flow to pass therethrough, the water flow flowing from the bottom of the mother ship 20 toward the ramp way 2 passes through the ramp way 2 and smoothly flows to the rear of the ramp way 2. To go. Therefore, in the vicinity of the rampway 2, there is almost no turbulence or vortex in the water flow.

  Then, with the ramp way 2 extending underwater from the opening 23, the boat 30 enters the ramp way 2 from above the water, and the boat 30 is taken up into the mother ship 20 via the ramp way 2. In this embodiment, the wire 25 is connected to the boat 30 that has entered the rampway 2, and the wire 25 is wound up by the winch device 26, whereby the boat 30 is pulled up to the mother ship 20. After the boat 30 has been lifted into the mother ship 20, the reel way 5 is wound up by the reel device 5 b, whereby the rampway 2 is pulled up and stored inside the hull of the mother ship 20. Then, the stern hatch 22 is closed.

  As described above, in the present invention, when the ramp way 2 is extended to the water from the opening 23 of the mother ship 20 by making the ramp way 2 permeable to water, that is, having a water permeability structure. This makes it difficult to cause turbulence and vortices in the vicinity of the rampway 2. Thereby, on the mother ship 20 side, the course is stabilized and the resistance by the ramp way 2 is also reduced, so that the speed reduction can be suppressed. Since the boat 30 is not affected by the eddy current generated from the rampway 2, the boat 30 can enter the rampway 2 in a stable state, and the boat 30 can be smoothly and smoothly lifted to the mother boat 20. It can be done safely.

  The lifting device 1 can also be used when starting the boat 30 mounted on the mother ship 20 on the water. By extending the ramp way 2 from the opening 23 into the water and starting the boat 30 on the water via the ramp way 2, even when the height position of the stern end 21 is higher than the water surface, The start can be performed smoothly and safely.

  As in this embodiment, when the ramp way 2 has a lattice structure, and the cross-sectional shape perpendicular to the left-right direction of the mother ship 20 of the member forming the lattice structure is a flat plate shape that does not disturb the water flow, Since the generation of the vortex and the increase in resistance due to the members can be effectively suppressed, it is easy to suppress the turbulence of the water flow and the generation of the vortex in the vicinity of the rampway 2. Examples of the cross-sectional shape that hardly disturbs the water flow include a circular shape, an elliptical shape, and a streamline shape in addition to the flat plate shape.

  The structure of the ramp way 2 through which the water flow can be transmitted is not limited to the lattice structure, but also a network structure composed of members extending in an oblique direction, or a structure in which a plurality of opening holes are formed in a plate member. Etc. In this embodiment, the entire ramp way 2 is configured to allow the water flow to pass through, but only a part of the ramp way 2, preferably 40% to 90%, may be configured to allow the water flow to pass therethrough. Note that the rampway 2 does not necessarily have to be in a state in which the water flow can be always transmitted, and may have a structure in which the water flow can be transmitted when the boat 30 is withdrawn.

  4 to 6 show a lifting device 1A according to a second embodiment of the present invention. As shown in FIGS. 4 and 5, the stern hatch 22 of the mother ship 20 of this embodiment has a double-speech structure that rotates in the left-right direction. The ramp way 2 of the lifting device 1A includes two vertical members 4 extending in the front-rear direction constituting both sides of the ramp way 2 and the left and right directions so as to be suspended between the two vertical members 4. It is formed by a plurality of extending lateral members 3. A hinge portion 4 a is provided in the middle of the vertical member 4, and the rear portion of the vertical member 4 can be rotated around the hinge portion 4 a with respect to the front portion of the vertical member 4. The horizontal members 3 are arranged at intervals in the front-rear direction of the vertical members 4. The cross-sectional shape perpendicular to the left-right direction of the mother ship 20 of the horizontal member 3 is formed into a streamlined shape.

  In the exit / retreat mechanism 5 of this embodiment, a plurality of wheels 5f are provided on both sides of the rampway 2 instead of the angle 5d, and two rails 5e for guiding the wheels 5f are installed on the slope 24. Yes. The two rails 5e are arranged at intervals in the left-right direction, and the interval between the left and right rails 5e is set to the same size as the interval between the left and right wheels 5f provided on the rampway 2. .

  As shown in FIG. 6, the lifting device 1 </ b> A includes a guide 6 that guides the boat 30 on the side of the rampway 2. The guide 6 of this embodiment is constituted by a fence body 6a erected on the side of the ramp way 2 and a cylindrical buffer body 6b that covers the outer peripheral surface of the column that constitutes the fence body 6a. The buffer body 6b can be formed of, for example, an elastic member such as resin or rubber, or a sponge having closed cells. In this embodiment, one end portion of the string-like body 5a is connected to a support column that constitutes the front portion of the fence body 6a.

  The lifting device 1 </ b> A further includes a fluctuation suppressing mechanism 7 that suppresses the fluctuation of the rampway 2 when extended to the water. The vibration suppression mechanism 7 of this embodiment controls the vibration sensor 8, the suppression force generation member 9, the drive device 10 that drives the suppression force generation member 9, and the drive device 10 based on the detection data of the vibration sensor 8. The control device 11 is configured to be configured.

  The motion sensor 8 is a sensor that detects the motion of the ramp way 2. Examples of the vibration sensor 8 include an acceleration sensor and a positioning sensor. In this embodiment, the fluctuation sensor 8 detects the vertical and horizontal fluctuations of the rampway 2. Detection data detected by the motion sensor 8 is configured to be sequentially input to the control device 11.

  The suppression force generation member 9 is a member that generates a suppression force or a suppression moment that suppresses the swing of the ramp way 2. The restraining force generating member 9 of this embodiment includes a movable horizontal fin 9a that generates lift in the vertical direction with respect to the rampway 2 in a state of being extended underwater, and a mother ship 20 with respect to the rampway 2. It consists of movable vertical fins 9b that generate lift in the ship width direction. In addition, the suppression force generation member 9 can also be comprised by a horizontal thruster, a vertical thruster, etc. other than the horizontal fin 9a and the vertical fin 9b, for example.

  The drive device 10 changes the direction in which the suppression force or the suppression moment is generated by driving the suppression force generation member 9. In this embodiment, a driving device 10 that rotates the horizontal fin 9a in the vertical direction and a driving device 10 that rotates the vertical fin 9b in the horizontal direction are provided. The control device 11 controls the drive device 10 so as to maintain the position and posture of the ramp way 2 constant based on the detection data detected by the motion sensor 8.

  In this embodiment, the fluctuation sensor 8, the suppression force generating member 9, the driving device 10 and the control device 11 are respectively installed at the lower rear end of the ramp way 2. Two horizontal fins 9a and two vertical fins 9b constituting the restraining force generating member 9 are installed on both sides of the ramp way 2, and a driving device 10 and a control device 11 are respectively attached to the horizontal fins 9a and the vertical fins 9b. Is provided.

  The vibration suppression mechanism 7 (the vibration sensor 8, the suppression force generation member 9, the driving device 10, and the control device 11) can be stored in a position that does not hinder the movement of the ramp way 2 when the ramp way 2 is stored. When the way 2 is extended underwater, it can be deployed in a predetermined position and direction. Although the installation location of the vibration suppression mechanism 7 is not limited to this embodiment, it can be determined as appropriate.

  Next, a method for lifting the boat 30 to the mother ship 20 using the lifting device 1A will be described.

  As shown in FIG. 5, first, the stern hatch 22 is opened. Next, the ramp way 2 is extended from the opening 23 into the water. In this embodiment, the reel device 5b feeds the string-like body 5a, and the ramp 5 is rotated along the rail 5e by using the slope 24 to slide the ramp way 2 to the rear of the mother ship 20. . When the rear part of the ramp way 2 reaches the desired water depth, the feeding of the string-like body 5a from the reel device 5b is stopped, and the front part of the ramp way 2 is fixed to the mother ship 20 rather than the hinge part 4a. Put it in a state.

  In this embodiment, when the ramp way 2 is extended underwater, the fluctuation suppressing mechanism 7 suppresses the fluctuation of the ramp way 2. Specifically, the fluctuation sensor 8 sequentially detects the fluctuation of the rampway 2 when extended in water. Then, the control device 11 sequentially controls the drive device 10 based on the detection data input from the vibration sensor 8, and generates a suppression force or a suppression moment in a direction to suppress the swing of the ramp 2 ( The movable vertical fin 9b and the movable horizontal fin 9a) are sequentially driven. Thereby, the fluctuation of the ramp way 2 is suppressed, and the position and posture of the ramp way 2 are kept constant.

  Then, the boat 30 is made to enter the rampway 2 along the guide 6 from the water with the swing suppression mechanism 7 suppressing the swing of the rampway 2, and the boat 30 is brought into the mother ship 20 via the rampway 2. Reap. The subsequent steps are the same as those in the above-described embodiment.

  As in this embodiment, when the structure is provided with the fluctuation suppressing mechanism 7 that suppresses the fluctuation of the ramp way 2, even when the mother ship 20 is shaken by the fluctuation suppressing mechanism 7, the ramp 20 The position and posture can be stabilized. This makes it easier for the boat 30 to enter the ramp way 2.

  Further, when the vibration suppression mechanism 7 includes the vibration sensor 8, the suppression force generation member 9, the drive device 10, and the control device 11, the rampway 2 and the mother ship 20 can be accurately suppressed. Become. This makes it possible to maintain the position and posture of the ramp way 2 constant even when the mother ship 20 is shaken in the waves or the like, and the boat 30 can easily enter the ramp way 2.

  In addition to the configuration of this embodiment, for example, the vibration suppression mechanism 7 may be configured to artificially operate the drive device 10 instead of providing the control device 11, or may be fixed to the rear end portion of the rampway 2. The vertical fins 9b and the fixed horizontal fins 9a are provided to control the flow of the water flow in the width direction of the mother ship 20, and the horizontal movement of the rampway 2 is suppressed, and the water flow in the vertical direction is controlled. The horizontal fins 9a for controlling the flow may be configured to suppress the roll of the ramp way 2 and the mother ship 20 and the pitch of the mother ship 20. With this fixed configuration, the vibration sensor 8, the suppression force generating member 9, and the driving device 10 are not necessary, and the configuration is simple.

  If the guide 6 for guiding the boat 30 is provided on the side of the ramp way 2 as in this embodiment, the course of the boat 30 on the ramp way 2 can be further stabilized. The risk of falling from the way 2 can be greatly reduced. Further, when the buffer body 6b is provided on the guide 6, even when the boat 30 comes into contact with the guide 6, the shock acting on the boat 30 and the guide 6 can be reduced by the buffer body 6b. Thereby, damage to boat 30 and guide 6 can be prevented effectively.

  In this embodiment, the guide 6 is constituted by the fence body 6a. However, the guide 6 also surrounds, for example, a wall body provided on the side portion of the ramp way 2 or the side portion and the upper side of the ramp way 2. You may comprise with the cage | basket body etc. which were formed in this way. Further, the fence body 6a, the car body, and the like constituting the guide 6 may be configured to be able to move relative to the ramp way 2. Further, for example, the ramp way 2 may be configured as a car body with the rear portion released, and the ramp way 2 itself may have the function of the guide 6. When the buffer body 6b is made of an elastic member such as resin or rubber, a weight or the like is attached to the guide 6 in order to cancel the buoyancy caused by the buffer body 6b.

  7 to 11 show a lifting device 1B according to a third embodiment of the present invention. As shown in FIGS. 7 and 8, in the lifting device 1 </ b> B, an open / close gate 12 is provided at the rear end portion of the ramp way 2. In this embodiment, furthermore, the distance between the guide 6 provided on the left side of the ramp way 2 and the guide 6 provided on the right side of the ramp way 2 is equal to the width of the boat 30 to be lifted. It is set almost the same.

  Further, in the exit / retreat mechanism 5 of this embodiment, a guide groove 5g for guiding the wheel 5f is formed on the slope 24 of the mother ship 20 instead of the rail 5e of the second embodiment. In the lifting device 1B, the fluctuation suppressing mechanism 7 and the lamp hinge portion 4a are not provided. Other configurations are the same as those of the lifting device 1A of the second embodiment described above.

  The open / close gate 12 includes a gate hinge portion 12a provided at the rear end of each of the left and right fence bodies 6a, and a door portion 12b connected to each gate hinge portion 12a. Like the guide 6, the door 12 b is provided with a buffer 12 c. As shown in FIGS. 7 and 8, when the left and right doors 12b extend in the front-rear direction to open the open / close gate 12, the boat 30 can enter the rampway 2 from the water. As shown in FIGS. 9 and 10, when the left and right door portions 12b extend in the left-right direction and the open / close gate 12 is closed, the rear end portion of the rampway 2 is sealed. The opening / closing gate 12 can be opened and closed from the mother ship 20.

  Next, a method for lifting the boat 30 to the mother ship 20 using the lifting device 1B will be described.

  As shown in FIGS. 7 and 8, first, the stern hatch 22 is opened. Next, the ramp way 2 is extended from the opening 23 into the water, and the open / close gate 12 is opened. Then, as shown in FIGS. 9 and 10, the boat 30 is made to enter the rampway 2 from the water, and the open / close gate 12 is closed in a state where the boat 30 is positioned closer to the mother ship 20 than the gate hinge portion 12a. Next, as shown in FIG. 11, with the open / close gate 12 closed, the reel device 5 b winds the string-like body 5 a, so that the boat 30 is mounted on the ramp way 2 and the boat 25 together with the ramp way 2. 30 is pulled up into the mother ship 20.

  If the open / close gate 12 is provided as in this embodiment, the boat 30 can be lifted to the mother ship 20 without using the wire 25 or the winch device 26 used to lift the boat 30. . This eliminates the need for a search operation for connecting the wire 25 and the like to the boat 30, and therefore the labor and time required for lifting the boat 30 can be greatly reduced.

  The open / close gate 12 can also be used when starting the boat 30 mounted on the mother ship 20 on the water. For example, with the open / close gate 12 closed and the boat 30 placed on the ramp way 2, the ramp way 2 is extended from the opening 23 into the water. After the rampway 2 is lowered, the open / close gate 12 is opened, and the boat 30 is started on the water. Thus, by using the open / close gate 12, the boat 30 can be started gently without sliding.

  As in this embodiment, the distance between the guide 6 provided on the left side of the ramp way 2 and the guide 6 provided on the right side of the ramp way 2 is the width of the boat 30 of the boat 30 to be lifted and retracted. If set substantially the same, the course of the boat 30 on the rampway 2 can be made more stable. Further, when the open / close gate 12 is provided together with the guide 6 as in this embodiment, the wobble 30 of the boat 30 on the rampway 2 can be effectively suppressed by the guides 6 on both sides. It is possible to withdraw in a stable state.

  In this embodiment, the open / close gate 12 having a double door structure is used. However, the open / close gate 12 may be configured to open above the ramp way 2 or open below the ramp way. However, if the open / close gate 12 having the double door structure is used, the influence of the cross wind on the boat 30 can be reduced by receiving the cross wind at the open / close gate 12 at the time of the lifting operation, so that the lifting operation can be performed more smoothly. You will be able to proceed.

  12 and 13 show a lifting device 1C according to a fourth embodiment of the present invention. The ramp way 2 constituting the lifting / lowering device 1 </ b> C includes two vertical members 4 constituting both side portions of the ramp way 2 and a plurality extending in the left-right direction so as to suspend between the two vertical members 4. The horizontal member 3 is formed.

  The vertical member 4 of this embodiment has a telescopic structure in which a plurality of divided bodies 4b are connected so as to be relatively movable in the longitudinal direction of the ramp way 2. And the horizontal member 3 is connected to each division body 4b which comprises the vertical member 4. As shown in FIG. The vertical member 4 expands and contracts by the relative movement of the divided body 4b in the front-rear direction, and the interval between the adjacent horizontal members 3 changes accordingly. The divided body 4 b constituting the rear portion of the vertical member 4 is fixed to the slope 24, and the extending direction of the vertical member 4 is set at substantially the same angle as the slope 24 of the mother ship 20.

  As shown in FIG. 12, in the state where the ramp way 2 is housed, the vertical member 4 is in a contracted state, and the gap between the adjacent horizontal members 3 is narrow. As shown in FIG. 13, when the boat 30 is lifted, the longitudinal member 4 is extended so that the ramp way 2 extends from the opening 23 into the water. When the vertical member 4 is extended, the gap between the adjacent horizontal members 3 is enlarged, and the rampway 2 has a structure that allows water flow to pass therethrough.

  If the vertical member 4 which comprises the ramp way 2 is made into a telescopic structure like this embodiment, the lifting apparatus 1 can be comprised very compactly. Therefore, it is particularly beneficial when the mother ship 20 is a relatively small ship.

  14 and 15 show a lifting apparatus 1D according to a fifth embodiment of the present invention. The ramp way 2 constituting the lifting / lowering device 1D constitutes a part of the hull stern part in the accommodated state. That is, the ramp way 2 of this embodiment also functions as the stern hatch 22 of the mother ship 20.

  The ramp way 2 of the lifting device 1D includes two vertical members 4 constituting both sides of the ramp way 2 and a plurality of flaps extending in the left-right direction so as to be suspended between the two vertical members 4 It is formed of a lateral member 3 of the type. Each horizontal member 3 is connected to the vertical member 4 so as to be rotatable, and the angle of the horizontal member 3 with respect to the vertical member 4 can be arbitrarily changed. The rear end portion of the vertical member 4 is connected to the stern end portion 21 of the mother ship 20 via the ramp hinge portion 13.

  As shown in FIG. 14, when the rampway 2 is stored and functions as the stern hatch 22, the front and rear ends of the adjacent lateral members 3 are overlapped so as to close the gap between the adjacent lateral members 3. By setting the angle of the transverse member 3 to the rampway 2, the rampway 2 enters a state where water does not flow.

  As shown in FIG. 15, when lifting, the horizontal member 3 is rotated with respect to the vertical member 4 from the stored state to create a gap through which the water flow can pass between the horizontal members 3. Thus, the rampway 2 has a structure that allows the water flow to pass therethrough. Then, the boat 30 is lifted to the mother ship 20 via the ramp way 2 by rotating the ramp way 2 around the ramp hinge portion 12 toward the water so that the ramp way 2 extends into the water. Can be obtained.

  As in this embodiment, when the ramp way 2 has a flap structure having the transverse member 3 that can rotate with respect to the longitudinal member 4, there is a state in which the ramp way 2 does not pass water and a state in which the water flow is permeable. Switching can be performed. As a result, the stern hatch 22 of the mother ship 20 can be configured by the ramp way 2 of the lifting device 1. Moreover, since the angle of the transverse member 3 can be adjusted in accordance with the direction of the water flow, it is advantageous for suppressing the turbulence and vortex of the water flow in the vicinity of the ramp way 2.

  16 and 17 show a lifting device 1E according to a sixth embodiment of the present invention. Similarly, the ramp way 2 constituting the lifting device 1E functions as the stern hatch 22.

  The ramp way 2 of the lifting device 1E includes two vertical members 4 constituting both sides of the ramp way 2 and a plurality of slide types extending in the left-right direction so as to be suspended between the two vertical members 4. The horizontal member 3 is formed. The rear end portion of the vertical member 4 is connected to the stern end portion 21 of the mother ship 20 via the ramp hinge portion 13. The horizontal member 3 includes a first member 3a fixed to the vertical member 4 and a second member 3b connected to the first member 3a so as to be slidable in the longitudinal direction of the vertical member 4. .

  As shown in FIG. 16, when the rampway 2 is housed and functions as the stern hatch 22, the first member 3a is brought into contact with the front end of the adjacent first member 3a and the rear end of the second member 3b. On the other hand, when the second member 3b is protruded, the ramp way 2 is not allowed to pass water.

  As shown in FIG. 15, when lifting, the second member 3 b slides so as to overlap the first member 3 a, so that a gap is generated between the adjacent first members 3 a, and the ramp way 2 is The structure allows water flow to pass through. By rotating the ramp way 2 around the lamp hinge portion 12 toward the water and extending the ramp way 2 into the water, the boat 30 is taken up by the mother ship 20 via the ramp way 2. It becomes possible.

  As in this embodiment, by making the lateral member 3 of the ramp way 2 into a slide structure, it is possible to switch between a state in which the ramp way 2 does not pass and a state in which the water flow is permeable. Thereby, the stern hatch 22 of the mother ship 20 can be configured by the rampway 2 of the lifting device 1E.

  In the first to sixth embodiments shown above, the case where the cross-sectional shape of the rampway 2 (the cross-sectional shape perpendicular to the length direction of the mother ship 20) is a planar shape is illustrated as an example. In such a lifting device 1 (1 </ b> A to 1 </ b> E), the cross-sectional shape and upper surface (mounting surface) shape of the ramp way 2 can be made to match the ship bottom shape of the boat 30. For example, the cross-sectional shape of the lampway 2 of the embodiment shown in FIG. 18 is formed in a V shape. The cross-sectional shape and the shape of the upper surface of the lampway 2 can also be a curved shape such as a U shape. Thus, when the cross-sectional shape or top surface shape of the ramp way 2 is made to match the shape of the bottom of the boat 30, the boat 30 is stably placed on the ramp way 2, and the ramp way 2 Since the boat 30 is less likely to wobble above, the boat 30 can be withdrawn in a more stable state.

  In the first to sixth embodiments described above, the opening 23 on the stern side of the mother ship 20 is provided with the lifting devices 1 and 1A to 1E. The opening 23 may be provided with a lifting device so that the boat 30 can be lifted from the bow side. Even when the ship is withdrawn from the bow side of the mother ship 20, by making the ramp way 2 permeable to water flow, turbulence and vortices in the vicinity of the ramp way 2 can be generated in the state where the mother ship 20 is running. It can be made difficult to occur.

  Moreover, each structure of the 1st-6th embodiment shown above can be combined suitably. Specifically, for example, it is also possible to employ a configuration in which the vibration suppression mechanism 7 is further provided in the lifting device 1B of the third embodiment. The method of pulling up the boat 30 is not limited to the method using the wire 25 and the winch device 26. For example, when the boat 30 can travel on the rampway 2 like an amphibious vehicle, the boat 30 can be self-propelled and taken up inside the mother ship 20.

DESCRIPTION OF SYMBOLS 1, 1A-1E (For boats) Lifting device 2 Rampway 2a Connection part 3 Horizontal member 3a 1st member 3b 2nd member 4 Vertical member 4a Hinge part 4b Divided body 5 Retracting mechanism 5a String-like body 5b Reel device 5c Pulley 5d Angle 5e Rail 5f Wheel 5g Guide groove 6 Guide 6a Fence body 6b Shock absorber 7 Shaking suppression mechanism 8 Shaking sensor 9 Suppression force generating member 9a Horizontal fin 9b Vertical fin 10 Driving device 11 Control device 12 Opening / closing gate 12a Gate hinge portion 12b Door part 12c Buffer 13 Lamp hinge part 20 Mother ship 21 Stern end part 22 Stern hatch 23 Opening part 24 Slope 25 Wire 26 Winch device 30 Boat

Claims (7)

A lifting device for lifting a boat from the opening of the mother ship to the inside on the water,
A ramp way extending into the water from the opening is provided, and a part or all of the ramp way has a structure that allows water to pass through or a structure that allows water flow to pass when the boat is lifted. A fishing device for boats.   When the rampway is installed in the mother ship, the rampway has a lattice structure, and the cross-sectional shape perpendicular to the left-right direction of the mother ship of the members forming the lattice structure is either a flat plate shape, a circular shape, an elliptical shape, or a streamlined shape. 2. The boat hoisting device according to claim 1, which is in the shape of any one or some combination.   The boat lifting device according to claim 1 or 2, wherein a guide for guiding the boat is provided on a side portion of the rampway.   The boat lifting / retracting device according to any one of claims 1 to 3, further comprising a rocking suppression mechanism that suppresses rocking of the rampway when extended to the water.   A fluctuation sensor that detects the fluctuation of the rampway by the fluctuation suppression mechanism, a suppression force generation member that generates a suppression force or a suppression moment that suppresses the fluctuation of the rampway, and a drive device that drives the suppression force generation member; The boat lifting / retracting device according to claim 4, further comprising a control device that controls the driving device based on detection data of the motion sensor.   A ship provided with the boat hoisting device according to any one of claims 1 to 5. A method of picking up a boat from the opening of the mother ship on the water,
A ramp having a rampway extending from the opening to the water, and a part or all of the rampway has a structure capable of transmitting a water flow or a structure capable of transmitting a water flow when the boat is lifted. A method for lifting a boat, wherein the way extends underwater from the opening, and the boat is lifted from the water via the ramp way into the mother ship.

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