JPS6313119Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a landing device for lifting large offshore floating bodies such as ships and plant barges onto land.

For example, ships were repaired by putting them in a dock, but if there was no dock nearby, repairs could not be carried out easily. For example, unloading of plant equipment is carried out using a quay, but if there is no quay nearby, a new quay must be constructed from the land side, which increases the cost of construction.

An object of the present invention is to provide a landing device for an offshore floating body that can easily and reliably land an offshore floating body even without a dock or quay.

In order to achieve the above object, the landing device for an offshore floating body according to the present invention is provided with an idle roller and a suction device that can be freely adsorbed to the bottom surface of the offshore floating body on the upper part of a main body that has a propulsion device and can freely float and sink. The main body is provided with a jet injection type position/direction control device and a position/direction detection device, a gyro device is provided within the main body, and a plurality of driven wheels are attached to the lower surface of the main body.

According to the configuration of the present invention, after the offshore floating body is moved downward to a predetermined position, it can be adsorbed via the idle rollers while the body is prevented from shaking by the operation of the gyro device, and the position and direction control device is activated. After the final position of the main body is corrected by suction and idle rotation of the idling roller, the suction device is activated to fix the main body at a plurality of predetermined positions, respectively. By operating each propulsion device in this state, the offshore floating body can be moved toward the land side,
Then, by driving the wheels after they come into contact with the seabed due to the gradually shallowing water depth, the wheel driving force can be used to drive the offshore floating body towards land, and then it can be landed. .

An embodiment of the present invention will be described below based on the drawings. In Figures 1 to 6, 1 is a landing gear;
Propulsion devices 3 are attached to both sides of the box-shaped main body 2, respectively. A plurality of ballast tanks 4 are provided in the upper part of the main body 2, and these ballast tanks 4 are connected to cylinders 5, and the main body 2 is floated and sunk by supplying and discharging seawater and gas to and from the ballast tank 4. I am free to do so. At a plurality of locations (four locations in this embodiment) on the upper part of the main body 2, idle rollers 6 are provided which can be freely adsorbed to the bottom surface of the offshore floating body. That is, a bracket 7 is continuously provided from the top surface of the main body 2, and this bracket 7
An idling roller 6 is attached via a fixed shaft 8 to the idling roller 6 . Elastically deformable suction cups 9 are disposed at a plurality of locations on the outer surface of the idling roller 6, and a suction pipe 10 with an open outer end is provided in the center of the suction cup 9. The inner end of the suction tube 10 is open to the fixed shaft 8 side. The fixed shaft 8
A suction passage 11 is formed at one location on the upper surface, and this suction passage 11 is connected to a suction pump 12 provided within the fixed shaft 8.
is connected to. A gyro device 14 having a shaft 13 is disposed in the lower central portion of the main body 2. Furthermore, cylinder devices 15 are provided at a plurality of locations (four locations in the embodiment) on the upper part of the main body 2, and the upward piston rod 1 of these cylinder devices 15
A suction device 17 is provided at the upper end of 6. Inside the main body 2 is an oil pump 19 that communicates with an oil tank 18.
The oil pump 19 is connected to the cylinder device 15 and also to a hydraulic motor (not shown) of the propulsion device 3. Furthermore, the main body 2 is provided with a jet injection type position and direction control device 20. That is, the position and direction control device 20 includes front and rear injection ports 21 formed on the front and rear walls of the main body 2, left and right injection ports 22 formed on the left and right walls, an upper injection port 23 formed on the top wall, and a lower injection port formed on the bottom wall. mouth 24
and a pump 25 that communicates with these injection ports 21 to 24 via control valves, respectively, and this pump 25 is configured to suck seawater. A position/direction detecting device 26 made of, for example, a gyroscope is provided on either the front or rear walls of the main body 2, and this position/direction detecting device 26 communicates with a control device on the land side (described later) using radio waves, sound waves, etc. It sends and receives signals and also controls pumps, valves, etc. A plurality (four in the embodiment) of drive wheels 27 are attached to the lower surface of the main body 2. That is, a support member is attached to the bottom wall of the main body 2, and a plurality of balls 31 are arranged between the lower surface of the support member 28 and the upper surface of the main body 30 in the cylinder device 29, and both 28 and 29 are vertically connected. It is relatively rotatable around an axis 32, and a locking member 33 is provided at the top of the main body 2 to prevent it from coming off. Reference numeral 34 denotes a rotational drive device, which includes a vertical pin 35 erected from the top of the main body 2 to be positioned on the vertical axis 32, a worm wheel 36 attached to the vertical pin 35, and a rotary drive device that meshes with the worm wheel 36. It is composed of a worm gear 37 rotatably attached to the support member 28 and a hydraulic motor 38 interlocked with the worm gear 37 and attached to the support member 28. The cylinder device 29 includes the main body 2, a piston 39 disposed within the main body 2, and a piston rod 40 that is integrated with the piston 39 and projects downward.
and a piston 39 in the main body 2.
The upper part becomes the pressurizing chamber 41. A wheel support frame 42 is attached to the lower end of the piston rod 40, and the low-pressure wheel 27 is attached to this wheel support frame 42 via a transverse axle 43. Further, the wheel support frame 42 is provided with a hydraulic motor 44 which is a traveling drive device and is interlocked with the axle 43. Note that a rotation prevention rod 45 is provided between the piston 39 and the wheel support frame 42. A cylinder 46 is attached to the main body 2 via a fixture 47, and a fluid such as carbon dioxide gas or air is sealed in the cylinder 46 at high pressure. The pressurizing chamber 41 and the cylinder 46 communicate with each other via a line 49 having an exhaust injection switching valve 48, and a pressure setting device 50 interlocked with the exhaust injection switching valve 48 is provided in the position/direction detection device 20. . Both hydraulic motors 38,
44 is connected to the oil pump 19 via a valve.

The action will be explained below. As shown in FIGS. 7 and 10, a ship 51, which is an example of an offshore floating body, is anchored on the ocean. Then, the trailer 53 carrying the control device 52 is stopped on land 54, and the position of the control device 52 is set to the absolute position A. Next, on the line Z connecting the control device 52 and the ship 51, a point near the ship 51 is set as a set point B, and the distance _L1 from the absolute position A to the set point B is measured. Next, the landing device 1 is moved at high speed within this distance _L1 . The movement of this landing device 1 is carried out by the propulsion device 3.
The landing device 1 is submerged or floating at this time. Furthermore, the direction during movement is detected and controlled by a gyro, and the distance is detected and controlled by time (speed detection). When the landing gear 1 reaches the set point B and is in a floating state, it is submerged by pouring water into the ballast tank 4. The level of this submergence is below the bottom 51a of the ship. The landing gear 1, which is submerged and at the set point B, is corrected in position and direction by jets from any of the injection ports 21-24 by actuation of the position and direction control device 21. Here, the distance L ₂ from the set point B to the specific position C on the bottom 51a is measured, and the landing device 1 is moved at low speed based on the distance L ₂ and stopped below the specific position C. Next, the entire body is raised by the jet jet from the lower jet nozzle 24, and the idling roller 6
is brought into contact with the ship's bottom 51a. At this time, the gyro device 14 is operating, so that the main body 2 maintains its posture without being shaken by waves or the like. In addition, the suction pump 12 is activated and suction force is applied to one suction cup 9 pressed against the bottom 51a, so that the idle roller 6 is in a suction state.
The main body 2 is then injected from any of the front and rear injection ports 21 and the left and right injection ports 22.
At this time, the idle roller 6 freely rotates and another suction cup 9 acts, so that the suction state is maintained. In this state, the landing device 1 can be fixed (temporarily fixed) at the specific position C by operating the cylinder device 15 and causing the rising suction device 17 to perform a suction action while in contact with the ship's bottom 51a. Next, the landing device 1 is given a distance L ₃ and a direction (angle) θ ₁ from the specific position C to the predetermined position D ₁ to be installed. The landing device 1 to which these control signals have been applied moves away from the ship's bottom 51a due to the non-action of the idler rollers 6 and the adsorption device 17 and the jet stream from the upper injection port 23, and once descends, and then its position and direction are controlled. However, even when moving at low speed towards the predetermined position _D1 , it is stopped below the predetermined position _D1 . After this stop, the landing gear 1 finally undergoes attitude correction,
The ballast tank 4 is raised by the increase in buoyancy caused by the supply of gas from the cylinder 5 to the ballast tank 4. The idling roller 6 comes into contact with the ship bottom 51a due to the rise, and then,
By performing the same positional correction as the specific position C described above, the landing device 1 can be fixed (fixed) at the predetermined position _D1 . By repeating such operations, as shown in FIG. 11, the plurality of landing devices 1 are sequentially moved from the specific position C to the respective predetermined positions D ₁ to D ₁₀ and arranged to be fixed on the ship bottom 51a. Set it to the state shown in Figure 8. Thereafter, by operating each propulsion device 3, the ship 51 is moved toward land 54.
After the wheel 27 comes into contact with the seabed due to the gradually shallowing water depth, the wheel 27 is driven by the hydraulic motor 44 to provide wheel driving force to the ship.
1 can be driven toward land 54 and then landed as shown in FIG. Thereafter, the boat 51 is driven to a predetermined location, and at this time the trailer 53 is also driven. Prior to running as mentioned above,
From the control device 52 on the trailer 53 side to the pressure setting device 5
Give instructions to 0. Then, the pressure setting device 50 detects the pressure in the line 49, and based on the detected pressure, outputs to the exhaust injection switching valve 48 and switches the exhaust injection switching valve 48 to the injection state. This allows cylinder 4
6 is injected into the pressurizing chamber 41, and the pressurizing chamber 4
1 is the desired pressure. As a result, the ship 51 can travel, and by operating the hydraulic motor 44 to drive and rotate each wheel 27, the ship 51 can be driven.
1 can run on its own. There are unevenness on the sea floor and on the road surface.
Therefore, when a recess is encountered while the vehicle is running, the wheel 27 facing the recess is lowered by the fluid pressure in the pressurizing chamber 41 and comes into contact with the recess. At this time, the inside of the pressurized chamber 41 that is expanded becomes lower than the desired pressure, but this is because the exhaust injection switching valve 48 is switched to the injection state by the output B based on the detection A, and the fluid in the cylinder 46 is pressurized. By being injected into the chamber 41, the pressurized chamber 41
The pressure inside is adjusted to the desired level. When the wheel 27 attached to the cylinder device 29 with the desired pressure in the concave portion shifts to the normal running surface, or when the wheel 27 on the normal running surface shifts to the convex portion, the pressurizing chamber 41 corresponding to the wheel 27 shifts to the normal running surface. It is compressed and rises above the desired pressure. The exhaust injection switching valve 48 is switched to the exhaust state by the output B based on the detection A at this time, and the fluid in the pressurized chamber 41 is discharged to the atmosphere, and the pressurized chamber 41
The pressure inside is adjusted to the desired level. When the ship 51 comes to a curved path, the rotary drive device 34 is actuated to rotate the cylinder device 29 about the longitudinal axis 32, thereby changing the orientation of the wheels 27. The direction is changed from the front side of the vehicle, and in the left-right direction, the angle on the direction of the turn becomes larger. For this purpose, the arrangement position (distance) of each wheel 27 is set in advance in the control device 52.

When the load at each location on the plane of the ship 51 is constant or approximately constant, the desired set pressure of each pressurizing chamber 41 may be constant. However, in the case of unbalanced loads, the desired set pressure for the pressurizing chamber 41 of each cylinder device 29 is
It will be changed pointwise or linearly.

According to the landing device for an offshore floating body according to the present invention described above, the following effects can be expected. In other words, after moving the offshore floating body to a predetermined position below,
By operating the gyro device, the body can be prevented from shaking without being affected by waves or ocean currents. In this state, the main body is adsorbed via the idling roller, and the final positional direction of the main body is corrected by the operation of the position direction control device and the suction idling of the idling roller, and then the suction device is activated. By doing so, it is possible to accurately fix each of the plurality of predetermined positions. By operating each propulsion device in this state, the offshore floating body can be moved toward the land side, and the wheels can be driven after the wheels come into contact with the seabed due to the gradually shallowing water depth. Therefore, the offshore floating body can be moved toward land using the wheel driving force, and the offshore floating body can be landed. This makes it possible to easily and reliably land a floating body on the ocean even without a dock or quay.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the lifting device, Fig. 2 is a front view thereof, Fig. 3 is a longitudinal sectional side view thereof, and Fig. 4 is a longitudinal sectional side view of the idle roller section. ,
Fig. 5 is a side view of the wheel portion, Fig. 6 is a longitudinal front view thereof, Figs. 7 to 9 are schematic side views showing the working state, Fig. 10 is a schematic plan view of Fig. 7,
Figure 1 is a schematic plan view. 1...Landing device, 2...Main body, 3...Propulsion device, 4...Ballast tank, 6...Idle roller,
9... Suction cup, 12... Suction pump, 13...
...Axis, 14...Gyroscope device, 17...Adsorption device, 20...Position and direction control device, 21...Front and rear injection ports, 22...Right and left injection ports, 23...Upper injection port, 24...Lower injection port , 25...pump, 26
...Position/direction detection device, 27...Wheel, 28...
Support member, 29... Cylinder device, 32... Vertical axis, 34... Rotation drive device, 44... Hydraulic motor (traveling drive device), 51... Ship (ocean floating body), 51
a...Bottom (bottom surface), 52...Control device, 53...
...Trailer, 54...Land.

Claims (1)

[Scope of utility model registration request] At the top of the main body, which has a propulsion device and can float freely,
An idler roller and a suction device that can be freely adsorbed are provided on the bottom surface of the offshore floating body, a jet injection type position and direction control device and a position and direction detection device are provided in the main body, and a gyro device is provided in the main body, further A landing device for an offshore floating body, characterized by having a plurality of drive wheels attached to the bottom side of the main body.