JPH0542094U - Inclination adjustment device when the ship is levitated - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a device for adjusting the inclination (trim and heel) of a ship when it is levitated, and in particular, enables adjustment of the inclination when the ship is docked and can be released by itself when the ship is aground. The present invention relates to a tilt adjusting device for floating a ship, which allows easy adjustment of trim and heel for a short time. [Structure] A large number of air bag accommodating parts made up of an outer cylinder part 3 are formed on a hull outer plate 10a below the waterline of the ship, and each air bag accommodating part is fitted in a watertight manner in an inner cylinder part 4 so as to be retractable. In addition, while the airbag 2 is housed in the inner tubular portion 4 in a contracted state, a pipe 23a for supplying compressed air for inflating the airbag 2 is connected so that one of the airbags can be adjusted when it is necessary to adjust the inclination of the ship. It is characterized in that the inclination of a ship can be adjusted by supplying compressed air to the bag 2 and discharging the compressed air into seawater.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for adjusting the inclination (trim and heel) when a ship is levitated, and particularly for adjusting the tilt and the heel when the ship is docked or when the ship is aground and can be released by itself. The present invention relates to a tilt adjusting device when a ship is levitated, which can be carried out easily and in a short time.

[0002]

[Prior Art]

 Conventionally, the inclination (trim, heel) of a ship when it is levitated is adjusted by changing the loading method of the cargo or fuel. If the adjustment cannot be done simply by changing the loading method such as the cargo, it is for ballast only. This is done by using water such as pouring and draining to the tank.

[0003] Furthermore, the self-leaving of a ship when it is aground is carried out by waiting for the tide level to increase or by discarding the cargo.

[0004]

[Problems to be solved by the device]

 By the way, in the case of the conventional trim and heel adjustment of a ship as described above, (1) When a ship near a state where fuel has been consumed docks, there is a limit to the adjustment by moving fuel, and it is not possible to create a docked state. It will be difficult. (2) It takes a considerable amount of time and labor to inject ballast water and transload cargo. (3) When the ballast water is newly loaded and the condition is adjusted to the dock, the docking time may become deep and the dock time may be limited or the dock may not be able to be docked due to the relationship between the depth of the dock and the tide level. (4) If there is water in the bottom tank due to grounding, the fuel cannot be moved and adjustment becomes impossible. There are problems such as.

Further, when a ship is aground and tries to leave itself, (1) it is affected by the tide level. (2) If the levitation state (trim, heel) cannot be adjusted by moving the fuel, it is necessary to remove the cargo. It is a problem.

The present invention is intended to solve such a problem, and forms an airbag storage portion in the outer plate of the hull below the waterline of the ship, and at the same time, installs the airbag in the airbag storage portion. It is stored in a contracted state, and when the inclination adjustment of the ship (including trim adjustment when leaving the ground) is required, the airbag is inflated in seawater so that the inclination of the ship can be easily adjusted. An object is to provide a tilt adjusting device at the time of levitating.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the inclination adjusting device of the present invention for floating a ship is such that, in a ship, an air bag storage part is formed on a hull outer plate below the water line of the ship, and the air bag storage part is It is characterized in that an inflatable airbag that receives compressed air is stored in a contracted state.

[0008]

[Action]

 In the above-described device for adjusting the inclination of a ship when it floats, the airbag stored in the hull outer plate is automatically submerged by simply sending compressed air from the compressor in the vessel to the airbag stored in a contracted state. The air bag's buoyant force makes it possible to easily and quickly adjust the levitation state of the ship.

[0009]

【Example】

 An inclination adjusting device for floating a ship according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a ship equipped with an inclination adjusting device, and FIG. 2 is a cross-sectional view of an airbag storage portion. 3 is a plan view of the same, FIG. 4 is a sectional view taken along the line AA of FIG. 2, FIG. 5 is a sectional view showing an inflated state of the airbag, FIG. 6 shows a cartridge replacement state, and the spare cartridge is an airbag. FIG. 6 is a cross-sectional view showing a state in which about half is inserted into the storage section.

In this embodiment, several airbag storages 1 are formed symmetrically on both sides of the center, front and rear of the outer plate 10a below the waterline of the ship 10. Has been done. Reference numeral 2 in FIG. 1 indicates an airbag that has been inflated in seawater.

As shown in FIG. 2, the airbag storage portion 1 is composed of an outer tubular portion 3 and an inner tubular portion 4, and a lid 5 is attached to an outer open end portion of the inner tubular portion 4. Reference numeral 6 indicates a hook capable of attaching the lid 5 to the inner cylindrical portion 4, and reference numeral 18 indicates a chain.

An air bag mounting portion 7 is provided so as to project toward the inner end portion of the inner cylinder portion 4, and the inner end portion is supported by the air bag mounting portion 7 so that the air bag 2 is housed in the inner cylinder 4 in a contracted state. ing. Then, the inner cylindrical portion 4, the lid 5, the airbag mounting portion 7, and the airbag 2 accommodated in the inner cylindrical portion 4 in a contracted state are integrated to form a cartridge.

The inner cylinder portion 4 forming this cartridge is provided with a nut portion 4b formed on the inner end bottom plate portion 4a thereof and a handle portion installed on a watertight hatch 8 forming the inner end portion of the outer cylinder portion 3. It is configured to be screwed into the screw portion 9a of 9 and fixed to the outer tubular portion 3.

Reference numeral 10b indicates a feature flat inside the hull, and a cartridge insertion device 20 is arranged on the feature flat 10b.

The cartridge inserting device 20 includes a hydraulic device 12 and a connecting bolt 11 for connecting to the outer cylinder portion 3. In FIG. 2, reference numeral 13 indicates a spare cartridge, and reference numeral 14 indicates a guide projecting from the inner cylindrical portion 4.

Further, a compressed air intake / exhaust port pipe 23 a is provided at the inner end of the outer cylinder part 3. The exhaust port pipe 23 a is connected to the air intake valve 24 and the exhaust valve 25 via the check valve 23. The air intake valve 24 is connected to the inboard compressor 30 via the hose 16, while the exhaust valve 25 is connected to the exhaust pipe 17 opening to the outside of the ship. Reference numeral 21 indicates an opening formed in the inner cylindrical portion 4.

The outer tube portion 3 is welded and fixed to the outer plate 10a of the hull to be watertight, and the watertight hatch 8 of the outer tube portion 3 is configured to be completely watertight.

Further, a pressure resistant rubber 21 seals between the outer tubular portion 3 and the inner tubular portion 4 to ensure watertightness when the cartridge (inner tubular portion 4) is replaced.

Reference numeral 8 a is an opening / closing clip of the watertight hatch 8, reference numeral 15 is a groove formed in the outer tubular portion 3 and engageable with the guide 14, reference numeral 19 is a cord for collecting the airbag 2, and reference numeral is further provided. 31 shows the water surface, respectively.

In the above configuration, compressed air is taken into the air bag 2 from the compressor 30 onboard by closing the exhaust valve 25 of the compressed air intake / exhaust port pipe 23a and opening the air intake valve 24. The compressed air to be supplied is supplied into the airbag 2 via the hose 16. The airbag 2, which has started to inflate by taking in compressed air, pushes the lid 5 open and projects into the water, and buoyancy is applied as the inflation proceeds. Then, the air intake valve 24 is closed in the state shown in FIG. The lid body 5 that has been pushed open is in a state of being hung from the outer plate 10a of the hull by the chain 18 connected to the inner tube portion 4. The above operation is sequentially performed depending on the required amount of trim and heel adjustment.

Then, after the adjustment of the levitated state (trim and heel) is completed, the dock is docked and installed in the dock. At this time, the air in the airbag 2 is discharged out of the ship through the exhaust pipe 17 by opening the exhaust valve 25 of the compressed air intake / exhaust port pipe 23a.

Next, at the time of docking, the amount of air in the airbag is adjusted to the same amount as when docking, and then the docking work is performed.

At this time, needless to say, if there is the weight loaded and removed in the dock, the weight of the air in the airbag is corrected by following them.

To replace the cartridge (inner cylinder part 4), operate the handle 9 to remove the watertight hatch 8 from the connection with the inner cylinder part 4, open the crib 8a of the watertight hatch 8 of the outer cylinder part 3, and The cartridge insertion device 20 arranged on the fabrication flat 10b and the outer cylinder portion 3 are connected by the connection bolt 11. Then, by the hydraulic device 12, the set spare cartridge 13 is pushed into the outer cylinder portion 3 and the existing cartridge (inner cylinder portion shown by reference numeral 4 in FIG. 2) is discharged into the water outside the ship. By doing. FIG. 6 shows this state. During this time, the outer open end of the outer tubular portion 3 is sealed by the inflated airbag 2 and there is no risk of outside water flowing into the outer tubular portion 3.

Further, in the above replacement operation, the guide 14 protruding from the cartridge (inner tube portion 4) is slid in the groove 15 of the outer tube portion 3, so always insert at a predetermined angle. You can Therefore, after the replacement is completed, the compressed air intake / exhaust port pipe 23a is automatically set to face the opening 21.

As shown in FIG. 5, a rope 19 is attached to the airbag 2 in advance for recovery after the dock. The base end of the rope 19 is secured to the ship.

After the docking, the cartridge (inner cylinder portion 4) is discharged from the hull into the sea by the above-mentioned operation, and is collected on the ship by the rope 19 together with the airbag 2 floating on the water surface.

The cartridge (inner cylinder portion 4) collected on board is stored as a spare cartridge for maintenance.

When it is necessary to disengage when stranded, the same operation as for trim and heel adjustment described above can be performed to add buoyancy to adjust trim (shallow water) and detach. Create a state.

After the detachment, the cartridge (inner cylinder portion 4) is detached from the hull by the same operation as the above-mentioned cartridge exchanging operation, if necessary. However, in this case, it may not be possible to recover.

When there is water infiltration due to damage to the airbag, the check valve 23 installed in the compressed air intake / exhaust port pipe 23a can automatically maintain watertightness.

As described above, the inclination adjusting device for floating a ship according to this embodiment can adjust the inclination of the ship in a short time and with a simple operation.

As an example, a vessel equipped with a spherical airbag having a radius of 2 m when inflated, (1) In the case of a tanker having a master length of 180 m, a ship width of 32 m and a D / W of 40,000 tons, I was able to make a trim adjustment of about 20 cm and a heel adjustment of about 0.4 degree. (2) In the case of a ship with a master of 150 m, a width of 20 m, and a displacement of 10,000 tons, trim adjustment of about 50 cm and heel adjustment of about 2 degrees could be performed.

[0034]

[Effect of the device]

 As described in detail above, the inclination adjusting device for floating a ship according to the present invention has the following effects and advantages. (1) When a ship docks, the levitation state can be easily adjusted in a short time, which is particularly advantageous for ships with a small amount of remaining fuel or when an emergency dock is required. (2) When docking, it becomes possible to ease restrictions on docking due to the relationship between the drainage and the tide level. (3) At the time of grounding, the possibility of self-disengagement can be increased by adjusting the floating state (trim and heel).

[Brief description of drawings]

FIG. 1 is a side view of a ship equipped with a tilt adjusting device when the ship is levitated according to an embodiment of the present invention.

FIG. 2 is a sectional view of the airbag storage portion.

FIG. 3 is a plan view of an airbag storage portion.

FIG. 4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a cross-sectional view showing an inflated state of the airbag.

FIG. 6 is a cross-sectional view showing a state in which a spare cartridge is inserted into the inside of the airbag storage portion by about half.

[Explanation of Codes] 1 Airbag Storage 2 Airbag 3 Outer Cylinder 4 Inner Cylinder 5 Lid 10 Ship 10a Outer Plate 10b Construction Flat 12 Hydraulic Device 13 Spare Cartridge 14 Guide 15 Groove 19 Cable 20 Cartridge Insertion Device 30 compressor

Claims (1)

[Scope of utility model registration request] 1. In a ship, an air bag accommodating portion is formed in a hull outer plate below the waterline of the ship, and an inflatable air bag is accommodated in a contracted state by supplying compressed air to the air bag accommodating portion. A tilt adjusting device for floating a ship.