JPH07291122A - Air cushion ship - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to an air cushion ship, and in particular, is intended to suppress hull motion by controlling air supply to an air cushion chamber. [Structure] Partition members 5 and 6 are provided in an air cushion chamber 7 at a bottom portion of an air cushion ship to divide into left and right compartments and front and rear compartments, and the respective compartments 7F1 and 7F.
Louvers 8F1, 8F2, 8A1 and 8A2 capable of opening / closing control are attached to the duct 11 for supplying air to the 2, 7A1 and 7A2 from the lift fans 9F and 9A and the air supply port to each compartment of the duct. Accordingly, when the hull is swaying, the opening amount of each louver can be adjusted to adjust the amount of air supply and suppress hull motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-cushion ship capable of navigating by floating the hull by supplying air to an air-cushion chamber at the bottom of the ship.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional air cushion ship.
As shown in (a) and (b), an air cushion chamber 7 surrounded by left and right hull side wall parts 1, 1 and a bow seal and a stern seal (not shown) is formed at the bottom of the ship, and A lift fan 9 for supplying air to the air cushion chamber 7 is provided. A louver 8 capable of opening / closing control is attached to an air supply port of the duct 11 communicating with the air cushion chamber 7 from the lift fan 9 to the air cushion chamber 7.

Therefore, when the hull is moving up and down in the waves, for example, when the hull moves upward, the louver 8 is controlled so as to have a narrow opening as shown in FIG. The air pressure is reduced, and during downward movement of the hull, the louver 8 is controlled to have a wide opening as shown in FIG.
By increasing the internal air pressure, the vertical movement of the hull can be suppressed.

[0004]

However, in the conventional air cushion ship as described above, it is not possible to expect the suppressing effect by the pressure control of the air cushion chamber against the pitching and rolling of the hull. The present invention is intended to solve such a problem, and provides an air cushion ship capable of suppressing not only the vertical motion of the hull but also the pitching and rolling. To aim.

[0005]

In order to achieve the above-mentioned object, the air cushion ship of the present invention has an air cushion chamber surrounded by left and right side wall portions of the hull, a bow seal and a stern seal at the bottom of the ship. In an air cushion ship equipped with a lift fan for supplying air to the air cushion chamber, a partition member is provided inside the air cushion chamber to divide the air cushion chamber into left and right compartments and front and rear compartments. And a duct for supplying air to the compartments from the lift fan, and an air supply port as an opening of the duct to the compartments,
The feature is that a louver that can be opened and closed is attached to the air supply port.

Further, in the air cushion ship of the present invention, the partition member is composed of a central vertical partition wall which divides the air cushion chamber into left and right compartments and a central seal which divides the air cushion chamber into front and rear compartments. It is characterized by being done.

Further, the air cushion ship of the present invention is characterized in that the central longitudinal bulkhead is made of a rigid material and the central seal is made of a flexible material.

Further, the air cushion ship of the present invention is characterized in that each of the compartments is provided with an exhaust port, and the exhaust port is provided with a louver capable of controlling opening and closing.

Further, in the air cushion ship of the present invention, an accelerometer is provided in each of the compartments, and a control device for controlling opening / closing of each of the louvers is provided in accordance with a detection signal from the accelerometer. Is characterized by.

[0010]

In the above-described air cushion ship of the present invention, the air cushion chamber is divided into the left and right compartments and the front and rear compartments by the partition member. Therefore, when suppressing the pitching of the hull, each of the front and rear compartments is suppressed. This can be dealt with by increasing the air supply to one side and decreasing the air supply to the other side, and when controlling the rolling of the hull, increase the air supply to one of the left and right compartments and supply the air to the other. Can be dealt with. In order to suppress the vertical movement of the hull, it is possible to reduce the air supply to all the compartments when the hull moves up and increase the air supply to all the compartments when the hull descends.

In the case where the partition member is composed of a central vertical partition that divides the air cushion chamber into left and right compartments and a central seal that divides the air cushion chamber into front and rear compartments, Since the air cushion chamber is divided into four in the front, rear, left, and right, the above-described action of suppressing the hull motion can be performed with the minimum partition member. And
If the central vertical bulkhead is made of a rigid material and the central seal is made of a flexible material, the rigidity of the central vertical bulkhead is expected to improve the strength of the hull, while the flexible central seal prevents waves. The buffer effect of is expected.

Further, when an exhaust port is provided in each of the above compartments and a louver capable of opening and closing control is attached to the exhaust port, the pressure in each of the compartments is increased when suppressing the above-mentioned hull motion. By closing the louver of the exhaust port at the time of measurement and conversely opening the louver at the time of reducing the pressure in each compartment, the action of suppressing the hull motion can be accurately performed.

Further, if an accelerometer is provided in each of the compartments and a control device that controls the opening and closing of each of the louvers in accordance with a detection signal from the accelerometer is provided, the action of suppressing the hull motion is suppressed. It will be automated and the suppression effect will be performed more accurately.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air cushion ship as an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view looking up from below, FIG. 2 is a schematic longitudinal sectional view thereof, and FIG. 4 is an A-A sectional view of FIG. 4, FIG. 4 is an explanatory diagram for suppressing the pitching state, FIG. 5 is an explanatory diagram for suppressing the rolling state, and FIG. 6 is a block diagram showing the control system.

As shown in FIGS. 1 to 3, an air cushion chamber 7 surrounded by left and right hull side wall portions 1, 1 and a bow seal 2 and a stern seal 3 is formed at the bottom of the ship, and the same air cushion chamber is formed. Lift fan 9 to supply air to 7
A and 9F are provided on the front half and the rear half of the hull, respectively.

A central vertical partition 6 made of a rigid material and a flexible material are provided inside the air cushion chamber 7 as a partition member for dividing the air cushion chamber 7 into left and right compartments and front and rear compartments. A central seal 5 configured is provided, and thus the air cushion chamber 7 is divided into four compartments including front left and right compartments 7F1 and 7F2 and rear left and right compartments 7A1 and 7A2. .

A duct 11 extending from each lift fan 9A, 9F to each compartment is provided, and an opening / closing control is provided for each of the supply ports as openings to the compartments 7F1, 7F2, 7A1, 7A2 of the duct 11. Possible air supply louvers 8F1,8
F2, 8A1 and 8A2 are attached. Further, each compartment 7F1, 7F2, 7A1, 7A2 is provided with an exhaust port, and each exhaust port is equipped with an exhaust louver 18F1, 18F2, 18A1, 18A2 whose opening / closing control is possible.

In addition, each compartment 7F1, 7F2, 7A1,
7A2, as shown in FIGS. 2 and 3, the accelerometers 10F1, 10
F2, 10A1 and 10A2 are provided, and the louvers 8F1 and 8F are arranged in accordance with detection signals from these accelerometers.
As shown in FIG. 6, a controller 12 for controlling the opening / closing of F2, 8A1, 8A2, 18F1, 18F2, 18A1 and 18A2 is provided. The reference numeral 4 in FIG. 1 indicates an underwater fin.

Since the air cushion ship of this embodiment is constructed as described above, the air cushion chamber 7 has the left and right compartments (7F1, 7A1 and 7F2, 7A2) and the front and rear compartments (7F1, 7F2 and 7A1). , 7A2) is divided by the partition members 5 and 6 so that one of the front and rear compartments (7F1, 7F2 and 7A1, 7A2), 7A1, 7A2, can be used to suppress pitching of the hull as shown in FIG. This can be dealt with by increasing the supply of air to the other side and decreasing the supply of air to the other side 7F1 and 7F2, and when suppressing the rolling of the hull as shown in Fig. 5, the left and right compartments (7F1, 7A1 and 7F2) are suppressed. , 7A2) can be dealt with by increasing the air supply to one of the 7F1 and 7A1 and decreasing the air supply to the other 7F2 and 7A2.

When suppressing the vertical movement of the hull, all the compartments 7F1, 7F2, 7A1, 7 are raised when the hull is raised.
This can be dealt with by reducing the supply of air to A2 and increasing the supply of air to all the compartments 7F1, 7F2, 7A1, 7A2 when the hull descends. The partition member separates the air cushion chamber 7 into left and right compartments (7F1, 7A1 and 7F2, 7A).
It is composed of a central vertical partition wall 6 that is divided into 2) and a central seal 5 that divides the air cushion chamber into front and rear compartments (7F1, 7F2 and 7A1, 7A2). Since 7F2, 7A1 and 7A2 are used, the above-described action of suppressing the ship motion can be performed with the minimum number of partition members.

If the central vertical partition 6 is made of a rigid material and the central seal 5 is made of a flexible material,
While it is expected that the rigid central vertical bulkhead 6 will improve the strength of the hull, the flexible central seal 5 is expected to have a cushioning effect against waves.

Further, each compartment 7F1, 7F2, 7A1, 7
An exhaust port is provided at A2, and louvers 18F1, 18F2, 18A1, and 18A2 that can be controlled to open and close are attached to the exhaust port, so when suppressing the above-mentioned hull motion, each compartment 7F1, 7F2, 7A1, 7A2 Louvers 18F1, 18F2, 18A1, 18A2 at the exhaust port to increase the internal pressure
Is closed, and conversely, when the pressure in each of the compartments 7F1, 7F2, 7A1 and 7A2 is to be reduced, the louver is opened to properly suppress the hull motion.

Further, each compartment 7F1, 7F2, 7A1,
7A2 shows accelerometers 10F1, 10F2, 1 as shown in Figs.
0A1 and 10A2 are provided and each louver 8F1, 8F2, 8A1 and 8 is responsive to a detection signal from the accelerometer.
Since the control device 12 for controlling the opening / closing of the A2, 18F1, 18F2, 18A1, and 18A2 is provided as shown in FIG. 6, the hull motion restraining action is automated and the restraining action is more accurately performed. . In FIG. 6, the transmission system shown by the solid line shows the control system for suppressing the pitching of the hull, and the transmission system shown by the broken line shows the control system for suppressing the rolling of the hull.

Further, each louver 8F1, 8F2, 8A1,
The opening / closing mechanism of 8A2, 18F1, 18F2, 18A1 and 18A2 is a hydraulic mechanism, and its opening degree control is performed by converting an acceleration signal into a stroke of a hydraulic cylinder.

[0025]

As described in detail above, according to the air cushion ship of the present invention, the following effects can be obtained. (1) Since the air cushion chamber is divided into the left and right compartments and the front and rear compartments by the partition member, when suppressing the pitching of the hull, increase the air supply to one of the front and rear compartments and to the other. It is possible to cope with the decrease in the supply air to the other side, and to control the rolling of the hull, it is possible to cope with the increase in the supply air to one of the left and right compartments and the decrease in the supply air to the other.

When suppressing the vertical movement of the hull, the air supply to all compartments is reduced when the hull is raised,
This can be dealt with by increasing the air supply to all compartments when the hull is descending. (2) If the partition member is composed of a central vertical partition that divides the air cushion chamber into left and right compartments and a central seal that divides the air cushion chamber into front and rear compartments, the air cushion Since the chamber is divided into four in the front-rear and left-right directions, the above-described action of suppressing the ship motion can be performed with the minimum number of partition members. (3) If the central vertical bulkhead is made of a rigid material and the central seal is made of a flexible material, the rigidity of the central vertical bulkhead is expected to improve the hull strength, while the flexible central seal is used. It is expected to have a buffering effect on the waves. (4) When an exhaust port is provided in each of the above compartments and a louver that can be controlled to open and close is attached to the exhaust port, when increasing the pressure in each of the compartments when suppressing the above-mentioned hull motion, By closing the louver at the exhaust port and conversely opening the louver when the pressure in each compartment is to be reduced, the hull motion can be suppressed properly. (5) While accelerometers are installed in each of the above compartments,
If a control device that controls the opening and closing of each louver in accordance with the detection signal from the accelerometer is provided, the hull motion restraining action is automated, and the restraining action is performed more accurately.

[Brief description of drawings]

FIG. 1 is a perspective view of an air cushion ship as an embodiment of the present invention, which is looked up from below.

2 is a schematic vertical sectional view of the air cushion ship of FIG. 1. FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an explanatory view for suppressing the vertical vibration state of the air cushion ship of FIG.

FIG. 5 is an explanatory view for suppressing the rolling state of the air cushion ship of FIG.

6 is a block diagram showing a control system of the air cushion ship of FIG. 1. FIG.

FIG. 7 is an explanatory diagram for suppressing vertical movement of a conventional air cushion ship.

[Explanation of symbols]

 1 Hull side wall 2 Bow seal 3 Stern seal 4 Underwater fin 5 Central seal 6 Central vertical bulkhead 7 Air cushion ship 7F1 Front left compartment 7F2 Front right compartment 7A1 Rear left compartment 7A2 Rear right compartment 8F1,8F2,8A1,8A2 Air supply louver 9 Lift fan 10F1,10F2,10A1,10A2 Accelerometer 11 Duct 12 Controller 18F1,18F2,18A1,18A2 Exhaust louver

Claims (5)

[Claims] 1. An air cushion ship having an air cushion chamber surrounded by left and right hull side walls, a bow seal and a stern seal on the bottom of the ship, and a lift fan for supplying air to the air cushion chamber. A partition member is provided inside the air cushion chamber to divide the air cushion chamber into left and right compartments and front and rear compartments, and a duct for supplying air to the compartments from the lift fan, An air-cushion ship, characterized in that an air supply port is provided as an opening to each of the compartments of the duct, and a louver capable of opening / closing control is attached to the air supply port. 2. The air cushion ship according to claim 1, wherein the partition member divides the air cushion chamber into left and right compartments and a central partition that divides the air cushion chamber into front and rear compartments. An air cushion ship characterized by being composed of a seal. 3. The air cushion ship according to claim 2, wherein the central longitudinal bulkhead is made of a rigid material and the central seal is made of a flexible material. 4. The air cushion ship according to claim 1, wherein each of the compartments is provided with an exhaust port, and the exhaust port is equipped with a louver capable of controlling opening and closing. Let's say an air cushion ship. 5. The air cushion ship according to any one of claims 1 to 4, wherein an accelerometer is provided in each of the compartments, and each louver is opened / closed in response to a detection signal from the accelerometer. An air cushion ship, characterized by being provided with a control device for controlling.