JP2002019516A - Small ship lifting device and storage dock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting device and a storage dock capable of efficiently landing a small ship and storing the same in a. dock in safety by a self-propelled unmanned carriage and the remote control at a place not having a quay and a landing bridge without underwater work by a worker. SOLUTION: The lifting device 10 is traveled from the land 51 toward the bottom of the water 52 by the remote control to load a ship body 50 on the lifting device at a position just under the ship body floating on the water, then is traveled from the bottom of the water 52 toward the dock 40 located on the land 51, and stopped near the dock 40, and the ship body 50 loaded on the lifting device 10 is stored in the dock 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting apparatus for transporting a small boat from water to land or from land to water, and a dock for accommodating the small boat transported by the lifting apparatus.

[0002]

2. Description of the Related Art Small boats, such as boats and yachts, are often lifted ashore on a regular or as-needed basis for storage, hull cleaning, and maintenance. In such a case, a method as shown in FIG. 9 is conventionally employed.

In the method shown in FIG. 9 (a), a rope 91 is hung on a bow portion and a stern portion of a hull 90 above water,
A hook 93 of a crane 92 is hooked on these ropes 91 and lifted from the water surface, and a boom 94 of the crane 92 is turned and expanded / contracted, thereby moving the hull 90 to a predetermined location on land. When returning the hull 90 from land to water, the reverse procedure is taken.

In the method shown in FIG. 9B, a hull 96 is placed and fixed on a trolley 95 moved from the land to the water bottom.
The wire rope 97 is hung on the trolley 95, and the hull 96 is lifted on land together with the trolley 95. To return the hull 96 from land to water, the reverse procedure is taken.

As a method of landing a hull on a quay or a pier, Japanese Unexamined Patent Publication No.
There are methods disclosed in Japanese Patent Application Laid-Open No. 269209 and Japanese Patent Application Laid-Open No. 11-335075.

[0006]

In order to land a small boat at a place without a quay or a pier, in the case of the method shown in FIG. 9 (a), it is very difficult to hang the rope 91 on the hull 90. If the rope 91 is not hung at an appropriate place, the balance may be lost during lifting. Further, since the rope 91 and the hull 90 are in line contact, the weight of the hull 90 may damage the hull in contact with the rope 91.

In the case of FIG. 9B, the trolley 95 is moved to a position immediately below the hull 96 floating in the water, and the worker enters the water, and the wedge-shaped support member is moved between the hull 96 and the trolley 95. After the hull 96 is fixed so that the hull 96 does not move, it is necessary to pull the bogie 95 with the wire rope 97 and lift it up to the land, so that a lot of labor and time are required for these series of operations. In particular, when the hull 96 is fixed on the carriage 95, the worker must enter the water, which is very troublesome.

On the other hand, JP-A-57-11195, JP-A-4-269209, and JP-A-11-33507
In order to carry out the method disclosed in Japanese Patent Publication No. 5 and other publications, it is necessary to construct a quay pier and then construct a large-scale structure consisting of columns fixed on land and underwater, and a hull elevating device. Therefore, construction of these facilities requires a large amount of materials and labor. In addition, construction of these facilities requires a large space, and cannot be easily removed or relocated after installation, so that implementation is not easy.

The problem to be solved by the present invention is that a self-propelled unmanned trolley and remote control make it unnecessary for a person to enter the water to work and land and dock a small boat at a place without a quay or a pier. It is an object of the present invention to make it possible to safely and efficiently carry out the accommodation.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided a small boat hoisting and lowering device, comprising: a bogie capable of traveling on land and underwater; a vertically movable hull mounting device and a hull attitude holding device provided on the bogie. An operating device capable of remotely controlling the bogie, the hull mounting device, and the hull attitude holding device is provided.

[0011] With this configuration, by moving the lifting device to the bottom of the water just below the hull floating on the water and raising the hull mounting device, the hull is placed horizontally on the hull mounting device. Since the hull is placed and supported in a stable state by the hull attitude holding device, the hull can be unloaded easily and safely simply by moving the lifting device from the bottom to the land. Thereafter, the lifting device is moved to the position of the small boat storage dock, which will be described later, and the mounted hull is transferred to the storage dock, whereby the docking work is completed.

After the hull stored in the storage dock is transferred to the hull mounting device of the lifting device in the reverse procedure, the lifting device is moved from the land to an appropriate position on the water bottom. If the hull mounting device is lowered, the hull separates due to the buoyancy of the water, so that the work of returning to the surface of the water can be performed efficiently and safely. The bogie, the hull mounting device, and the hull attitude holding device can be operated from the land using the remote control device, so that the worker does not need to enter the water. In addition, it is possible to safely and efficiently carry out landing and docking of a small boat without building a large-scale structure such as a quay, a pier, and a hull elevating device.

[0013] A self-propelled bogie provided with a rubber crawler and a driving device is preferable as the bogie, and a hydraulic cylinder or the like is preferable as a lifting mechanism of the hull mounting device and the hull attitude holding device. Further, as the remote control device, a wireless control method is preferable, but a wired control method may be used in order to ensure controllability underwater.

The hull mounting device serves also as a transfer device for transferring the hull in the longitudinal direction of the hull, so that the hull placed on the hull mounting device and discharged is transferred to a hull receiving dock or the like. The operation of transferring the hull from the storage dock to the hull placing device can be efficiently performed.

The hull attitude holding device also serves as an elevating device of the hull mounting device, so that the hull mounted on the hull mounting device can be raised and lowered while always maintaining a stable attitude.
Since it is possible to lower the hull, the safety during the lifting operation of the hull is further improved.

[0016] By adding a ship abdomen support device for preventing the hull from swaying to the hull attitude holding device, the work of transferring the hull placed on the hull placing device to the hull receiving dock, or conversely, The operation of transferring the hull from the hull storage dock to the hull mounting device can be facilitated, and the hull can be prevented from being damaged during the moving operation. In addition, a rotary air fender or the like is preferable as the ship's abdomen support device.
Here, the rotary air fender is a structure in which air is filled inside a rubber tire-like rotating body rotatably supported on a predetermined support shaft, and the hull in contact with the outer periphery thereof is elastically supported by air pressure. can do. Therefore, protection, damage prevention and stability of the hull placed on the hull placing device can be ensured, and when the hull receives a transverse wave in water, the shock is absorbed by the rotary air fender. This can prevent the elevating device from overturning.

By providing an automatic control device for detecting the distance between the hull mounted on the hull mounting device and the flank support device and automatically bringing the flank support device into contact with the hull, When the hull is placed on the loading device, the ship's abdomen support device automatically adheres to the ship's abdomen, and that state is maintained, so workability and safety during hull transport and transfer work Can be further enhanced. In addition, as the automatic control device, a device configured by a sensor that detects a distance between the hull and the flank support device, and a hydraulic cylinder that moves the flank support device toward and away from the hull according to a signal from the sensor is preferable. It is.

Next, the dock for accommodating a small boat according to the present invention is a dock for accommodating a hull landed by the above-described lifting / lowering apparatus for a small boat, and is provided on a gantry installed on the ground. A hull support device including a plurality of rotating bodies that support the bottom of the ship and a plurality of rotating bodies that support the side of the ship, and a driving mechanism that rotationally drives at least the rotating body that supports the bottom of the ship. And

With this configuration, the hull that has been landed by the lifting device and conveyed to the vicinity of the storage dock is moved toward the storage dock, and a part of the hull is supported on the bottom of the ship. If the hull is placed on the rotating body and moved as it is, the hull can be housed on the gantry while being supported in a normal posture by the rotating body supporting the roller group and the abdomen. Further, by performing the operation in the reverse procedure, the hull accommodated on the gantry can be transferred to the lifting device. Since the rotating body supporting the bottom of the ship is rotationally driven by the drive mechanism, the work of moving the hull can be performed safely and efficiently.

Further, by providing the plurality of rotating bodies, the operation of transferring the hull to the hull storage dock and the operation of transferring the hull from the hull storage dock to the hull lifting device can be facilitated. Can be prevented from being damaged. In addition, as a rotating body that supports the bottom of the ship,
A steel roller or the like whose outer periphery is covered with rubber is suitable,
As the rotating body that supports the ship's abdomen, the above-described rotary air fender or the like is suitable.

Further, if an automatic control device is provided for sensing the distance between the hull and the rotating body supporting the ship's abdomen and automatically bringing the rotating body into contact with the hull, the rotating body is automatically attached to the hull. Since the hull is kept in a normal posture in close contact with the hull, the safety during the transfer of the hull, as well as during storage, cleaning or maintenance of the hull can be further enhanced. It is preferable that the automatic control device include a sensor that detects the distance between the hull and the roller group, and a hydraulic cylinder that moves the rotating body toward and away from the hull in accordance with a signal from the sensor.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing a hull landing operation using a small boat lifting apparatus and a storage dock according to an embodiment of the present invention, and FIG. 2 is a hull return operation from the storage dock to the surface of water. FIG.

At the time of unloading the hull 50, as shown in FIG. 1, the lifting device 10 of the small boat is made to travel from the land 51 to the water bottom 52, and the hull 50 is placed directly below the hull 50 floating on the water. After loading on the lifting device 10, the vehicle traveled from the water bottom 52 to the dock 40 (hereinafter referred to as the dock) of the small boat on the land 51, and the lifting device 10 was stopped by approaching the dock 40. Thereafter, the hull 50 loaded on the lifting device 10 is stored in the dock 40.

At the time of returning the hull 50 to the water, as shown in FIG. 2, the lifting device 10 is stopped by approaching the dock 40 and the hull 50 accommodated in the dock 40 is transferred to the lifting device 10. After loading, the hull 50 travels from the land 51 toward the bottom of the water 52, and detaches the hull 50 at an appropriate depth according to the draft of the hull 50.

FIG. 3 is a side view of the lifting device of FIG. 1, FIG. 4 is a plan view of the same, FIG. 5 is a front view of the same, and FIG. 6 is a side view showing the lifting operation of the lifting device. The lifting device 10 includes a cart 11 having a rubber crawler 12 and a belt conveyor 13 provided on the cart 11 and serving as a device for mounting the hull 50.
And a rotary air fender 15 which is a hull attitude holding device for maintaining the hull 50 placed on the belt conveyor 13 in a normal attitude, and a column 14 for supporting these, and moving the belt conveyor 13 and the rotary air fender 15 up and down. Hydraulic cylinders 16a, 16b, 19, which are elevating devices,
It comprises a work light 17 that can be raised and lowered as necessary, a radio control device 18 that can remotely control the cart 11 and the hydraulic cylinders 16a, 16b, 19 from the land.

The belt conveyor 13 and the rotary air fender 15 are driven to rotate by power equipment (not shown), and also serve as a transfer device for horizontally moving the hull 50 placed on the belt conveyor 13. The air fender 15 also functions as a ship's belly support device. The rotary air fender 15 is made of rubber and, like a rubber tire, is filled with air. Therefore, the rotary air fender 15 can elastically support the hull 50 abutting on the outer periphery thereof.

Here, the rotary air fender 15 is automatically turned on and off by the expansion and contraction of the hydraulic cylinder 19 in accordance with a signal from a sensor (not shown) for detecting the distance from the hull 50 placed on the belt conveyor 13. The belt conveyor 1 is elastically adhered to the hull 50 and maintains the state.
The hull 50 placed on the top 3 can always be kept in a normal posture. Further, the hull 50 loaded on the lifting device 10
The shock generated when the vehicle receives a transverse wave in the water is absorbed by the rotary air fender 15, so that the entire lifting device 10 can be prevented from overturning.

Since the hydraulic cylinders 16a and 16b can be independently extended and retracted to tilt the belt conveyor 13, the forward and backward inclination of the hull 50 on the belt conveyor 13 can be adjusted to maintain a normal posture. it can. Further, when the bogie 11 climbs or descends on an inclined ground or stops on an inclined ground, the hull 50 can be maintained in a horizontal state by separately expanding and contracting the hydraulic cylinders 16a and 16b.

FIG. 7 is a side view of the storage dock of FIG. 1, and FIG. 8 is a front view of the same. The dock 40 is placed in a frame-like base 42,
A rotary roller 41 on which the hull 50 can be mounted, a rotary air fender 43 which abuts on the abdomen of the hull 50 mounted on the rotary roller 41 and keeps the hull 50 in a horizontal state, and a column for supporting these. 44 and the like. The rotary roller 41 is a steel roller whose outer periphery is covered with rubber. Each rotary air fender 43 is rotationally driven by a power device (not shown), and is a transfer device for horizontally moving the hull 50 and a posture holding device. Also serves as.

The rotary air fender 43 has the same structure as the rotary air fender 15 described above, and is provided with a hydraulic cylinder 45 that expands and contracts by a signal from a sensor (not shown) for detecting the distance between the hull 50 and the rotary air fender 43. The hull 50 is automatically brought into close contact with the hull 50 and maintained in that state.
Can always be maintained in a normal horizontal state.

As shown in FIG. 1 described above, when the landing operation of the hull 50 floating on the water is performed, the lifting device 10 is moved to the water bottom just below the hull 50 above the water by using the radio pilot 18 to When the belt conveyor 13 and the rotary air fender 15 in the state of FIG. 6A are raised to the state of FIG. 6B by extending the cylinders 16a, 16b, and 19, the hull 50 is placed on the belt conveyor 13. The lifting device 10 is moved from the water bottom 52 to the vicinity of the waterside in this state, and the hydraulic cylinder 16 is held.
After the hull 50 is lowered by contracting the a, 16b, and 19, the hull 50 can be easily and safely unloaded by moving the lifting device 10 until the hull 50 is completely lifted up on the land 51.

Thereafter, the lifting apparatus 10 is moved toward the dock 40 installed on land, and a part of the hull 10 is stopped at a position where the hull 10 can be placed on the rotary roller 41 of the dock 40. If the hull 50 is moved horizontally by rotating the belt conveyor 13 and the rotary air fender 15, and the entire hull 50 is placed on the rotary roller 41,
The work of housing the dock 40 is completed. The hull 50 during the transfer is always kept in a normal posture by the rotary air fender 15 of the lifting device 10 and the rotary air fender 43 of the dock 40.

Next, as shown in FIG.
When the hull 50 housed in the dock 0 is returned to the surface of the water, the lifting device 10 is brought close to the dock 40 and stopped, and then the hull 50 is horizontally moved by rotating the rotary air fender 43 of the dock 40 to lift the hull 50. It is placed on the belt conveyor 13 of the descending device 10. At this time, the hull 5
0 is always held in a normal posture by the rotary air fender 15 of the lifting device 10 and the rotary air fender 43 of the dock 40.

When the entire hull 50 is placed on the belt conveyor 13, the lifting device 10 is moved to near the waterside, and then the belt conveyor 13 and the rotary air fender 43 are moved.
Is raised to bring the hull 50 up, the lifting device 10 is moved along the water bottom 52 to an appropriate depth according to the draft of the hull 50, and then the belt conveyor 13 and the rotary air fender 43 Is lowered, the hull 50
Since the water is naturally separated from the lifting device 10 by the buoyancy of the water, the work of returning to the surface of the water can be performed efficiently and safely.

These operations are carried out by using the radio control device 18 from the land on the bogie 11 of the lifting device 10 and the hydraulic cylinder 1
6A, 16B, 19, etc., the operator does not need to enter the water in any of the landing operation of the hull 50 and the returning operation to the water. Also, the landing and docking of the hull can be performed safely and efficiently without constructing a large-scale structure such as a quay or a hull elevating device.

[0036]

According to the present invention, the following effects can be obtained.

(1) A trolley capable of traveling on land and underwater, a hull mounting device and a hull attitude holding device provided on the trolley, and a remote control of the trolley, the hull mounting device, and the hull attitude holding device Equipped with a possible operating device, the lifting device travels to the water bottom just below the hull floating above the water, the hull is lifted, the hull is placed, and then the lifting device is moved from the bottom to the land. The hull landing operation can be performed safely and efficiently simply by moving the hull, and the operation of returning the hull to the water can be performed safely and efficiently by performing the opposite operation. In addition, since the bogie and the like can be operated from the land by the remote control device, there is no need for an operator to enter the water, and there is no need to construct a large-scale structure such as a quay, a pier, and a hull elevating device.

(2) By making the hull mounting device a device which also serves as a transfer device for transferring the hull in the longitudinal direction of the hull,
The work to transfer the hull placed on the hull placing device and landed to the hull storage dock, etc., and conversely, the work to transfer the hull from the hull containing dock to the hull placing device, can be performed efficiently and easily. Become.

(3) The hull attitude holding device is a device which also serves as a lifting device of the hull mounting device, so that the hull placed on the hull mounting device is always held in a stable attitude.
Since the ship can be raised and lowered, the safety during the work of lifting and lowering the hull is further improved.

(4) The hull attitude holding device is provided with a flank support device for preventing the hull from swaying, so that the hull placed on the hull mounting device is transferred to the hull receiving dock. The operation of moving the hull from the storage dock onto the hull placing device can be facilitated, and the hull during the moving operation can be prevented from being damaged.

(5) As a dock for accommodating the hull landed by the above-mentioned lifting device, a rotating body supporting the bottom of the ship and a rotating body supporting the abdomen are mounted on a gantry installed on the ground. A hull support device having a body, and a drive mechanism that rotationally drives a rotating body that supports at least the bottom of the ship are provided. If a part of the hull is placed on a rotating body that supports the bottom of the hull and moved as it is, the hull can be accommodated on the gantry with the hull supported in a normal position, and the opposite is true. By following the procedure, the hull housed on the gantry can be transferred to the lifting device, so that the hull transfer work can be performed safely and efficiently, and the hull during transfer work can be prevented from being damaged. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a landing operation of a hull using a lifting device and a storage dock of a small boat according to an embodiment.

FIG. 2 is an explanatory view showing a water return operation of the hull using the lifting device and the storage dock shown in FIG. 1;

FIG. 3 is a side view of the lifting device of FIG. 1;

FIG. 4 is a plan view of the lifting device of FIG. 1;

FIG. 5 is a front view of the lifting device of FIG. 1;

FIG. 6 is a side view showing an elevating operation of the elevating device of FIG. 1;

FIG. 7 is a side view of the storage dock of FIG. 1;

FIG. 8 is a front view of the storage dock of FIG. 1;

FIG. 9 is an explanatory view showing a conventional hull landing method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 lifting device 11 carriage 12 rubber crawler 13 belt conveyer 14 support post 15, 43 rotary air fender 16 a, 16 b, 19, 45 hydraulic cylinder 17 work light 18 radio control device 40 dock 41 rotary roller 42 mount 44 support 50 hull 51 Land 52 Water bottom

Claims (5)

[Claims] A trolley capable of traveling on land and underwater, a hull mounting device and a hull attitude holding device provided on the trolley, and the trolley, the hull mounting device, and a hull attitude holding device are provided. A lifting device for a small boat, comprising a remote control device. 2. The lifting device for a small boat according to claim 1, wherein the hull mounting device is a device also serving as a transfer device for transferring the hull in the longitudinal direction of the hull. 3. The lifting device for a small boat according to claim 1, wherein the hull attitude holding device is a device also serving as a lifting device of the hull mounting device. 4. The lifting device for a small boat according to claim 3, further comprising a flank support device for preventing the hull from swaying to the hull attitude holding device. 5. A storage dock for a small boat for storing a hull landed by the small boat lifting apparatus according to any one of claims 1 to 4, wherein the dock is provided on a gantry installed on the ground. A small boat containing: a hull support device including a rotator supporting a bottom and a rotator supporting a ship abdomen; and a driving mechanism for rotating and driving at least the rotator supporting the bottom. dock.