JPH08301185A - Submerged propulsion-engine-equipped ship - Google Patents

Abstract

PURPOSE: To provide a submerged propulsion-engine-equipped ship which is given high restorability from capsize by a submerged low-center-of-gravity propulsion main body and by a hull placed thereon. CONSTITUTION: This submerged propulsion-engine-equipped ship 100 comprises a submerged propulsion main body 10 submerged in water W and enclosing a propulsion engine SK, etc., which has the function of an anchor and that of propelling and a hull 30 fitted to the top of the submerged propulsion main body 10 and floating above the surface W1 of water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a ship with a low center of gravity composed of a low deck and a submerged propulsion body, which provides high resilience to capsizing and high directivity to crosswinds, and a flapper that provides a stable running posture. It relates to a ship with a submersible propulsion engine that is capable of entering service to and.

[0002]

2. Description of the Related Art A conventional ship is equipped with a fuel tank, a prime mover, a speed change mechanism, and a drive shaft in a space at the bottom of one hull, and transmits a rotational force to a screw provided outside the stern through the drive shaft. , Bring the hull into service. The space left at the bottom of the hull is generally used as a luggage compartment or a passenger cabin on the bottom of the ship, and the deck is generally provided with high places such as a passenger compartment and a cockpit. Further, in a small boat, as shown in FIG. 6, the prime mover G, the speed change mechanism M, etc. and the drive shaft D are arranged in an inclined posture at a predetermined angle θ with the screw S side lower than the water line W1. It is common. Then, when the ship is sailing, the hull is further inclined at the angle θ1.
Just tilt.

Further, Japanese Utility Model Publication No. 63-17756 relates to a semi-submersible catamaran, and has a wide deck on the bottom of the hull.
The support body of the buoyancy generating means is provided symmetrically, and the support body is immersed in water to generate buoyancy, so that the hull is stably floated above the water surface. Then, the rotational force from the propulsion engine provided in the hull is guided to the screw provided at the tail end of the support body to propel the hull. This catamaran can carry cargo and passengers efficiently with its large deck, is strong against side winds and high waves, and can perform stable service.

[0004]

Since the center of gravity of the above-mentioned conventional ships is generally above the water surface (draft line), the cap can be prevented from overturning due to a small roll of the ship (generation of side winds and transverse waves). It provides resilience, but it can easily capsize with a large roll. In addition, the capsized ship is unable to get up again even if it wants to restore its normal posture because it loses its balance due to its high center of gravity and the infiltration of seawater into the cabin. Therefore, there are many accidents of capsizing ships on the sea where strong winds and waves are high. In addition, because ships that are moored at the harbor have no directivity to the wind that directs the hull (especially the bow) to the windward side even if a strong cross wind is received, a capsize accident during a strong wind that receives a cross wind in the front Is occurring frequently.

Further, since a propulsion engine is arranged at the bottom of a hull of a general ship, the ship bottom space occupies most of the space due to the propulsion engine and cannot be effectively used. In particular, in small boats, the prime mover and the transmission must be placed in an inclined posture, so the lubricating oil is not circulated evenly to these propulsion engines, which may cause seizure and mechanical wear of the prime mover and the transmission. , Shorten the life of the propulsion engine.

[0006] In particular, as a tendency to be seen in small boats, there is a phenomenon that the bow rises more than necessary at the time of navigation while the stern sank into the water. This unstable cruising attitude of the hull not only worsens the riding comfort of the ship, but also causes more frequent capsizing accidents on the sea where strong winds and waves are high. Furthermore, if the rotation of the screw occurs just below the surface of the water, air will be trapped in the screw, adversely affecting air cavitation. Also, in catamaran, the propulsion mechanism is housed in the hull at a high position, so the space inside the hull is narrowed and the width of the hull must be wider than necessary, resulting in a special ship and high cost. I have no choice.

The present invention has been made in view of the problems of the above-mentioned conventional method. A first object of the present invention is to provide a high substitutability for capsizing by a submerged propulsion main body having a low center of gravity which is submerged in water and a hull mounted thereon. The purpose is to provide a ship with a submerged propulsion engine.

A second object of the present invention is to provide a ship with a submersible propulsion engine which can control a hull freely by a flapper to obtain a high cruising speed under a stable operation posture and which does not cause air cavitation due to screw rotation. To provide.

Further, a third object is to provide a ship with a submersible propulsion engine having a strong directivity with respect to a crosswind by a rational arrangement of a long deck on the bow side and a cabin, a cockpit on the stern side. Especially.

A fourth object is to provide a watercraft with a submersible propulsion engine, in which lubrication of a prime mover, a transmission, etc. is made smooth and durability of the propulsion engine is improved.

A fifth object of the present invention is to provide a ship with a submersion type propulsion engine capable of maximally utilizing the internal space of the hull.

[0012]

[Means for Solving the Problems] In order to achieve the first and fifth objects, the first aspect of the present invention is to provide a submersion propulsion main body which accommodates a propulsion engine having a weight function and a propulsion function when immersed in water, and the submersion propulsion method. A ship with a submersible propulsion engine, characterized in that the ship is attached to the upper part of the main body and is composed of a hull that floats above the water surface.

In order to achieve the first, fourth and fifth objects, the invention according to claim 2
Is a ship with a submersible propulsion engine according to claim 1,
A submerged propulsion system characterized in that a propulsion engine having at least a fuel tank, a prime mover and a speed change mechanism, and having a weight function and a propulsion function is installed inside the submersible propulsion body, and the weight in water is almost zero. It is a vessel with an engine.

In order to achieve the first, second, fourth and fifth objects, the third aspect of the present invention is the marine vessel with a submersible propulsion engine according to the first and second aspects, wherein the submerged propulsion main body has a streamlined shape, A submerged propulsion engine characterized by a spherical bow at the tip of the main body, a flapper on the middle abdomen of the submerged propulsion body, and a propulsion screw, a Kaji and a flapper at the tail end. It is an attached ship.

In order to achieve the first, third and fifth objects, the invention according to claim 4
Is a ship with a submersible propulsion engine according to claim 1,
The hull is provided with a long and low deck in the front and rear on the bow side, and high places such as passenger cabin and cockpit on the stern side, and the front and rear deck length on the bow side is defined as the cabin and cockpit on the stern side. It is a watercraft with a submersible propulsion mechanism characterized by being set longer than the front-rear length.

[0016]

According to the present invention, the center of gravity of the ship is set at the submerged propulsion body, and since this is in the water below the water surface (draft line), there is no adverse effect of air cavitation and the effect of floats and rising spills. Even if a side wind or a transverse wave occurs, it will not be capsized and will always exert a strong restoring force. For this reason, the hull does not capsize even if it undergoes a large roll.
In addition, even if it capsizes, its low center of gravity prevents seawater from entering the cabin and quickly restores its normal posture. Therefore, the ship operation on the sea with high wind and waves is made safe. Further, even ships and the like anchored at the harbor have a directivity to the wind such that the direction of the hull (especially, the bow) is turned to the windward side when a strong cross wind is received.

Further, since the propulsion engine is arranged in the submerged propulsion main body separated from the hull, the space of the bottom of the ship can be effectively utilized widely, and the space utilization becomes remarkable especially in a small boat. In addition, the phenomenon that the bow of the small boat sways and the bow rises during navigation and the stern of the boat dives into the water is also suppressed by the flapper, and there is no adverse effect of air cavitation, and a stable navigation posture is achieved and the boat is comfortable to ride. Furthermore, on the sea where strong winds and waves are high, the flapper prevents the bow from being lifted and the bow is covered with waves, and there is no capsizing. In addition, since the prime mover and the transmission are horizontally controlled by the flapper, the lubricating oil is evenly circulated to these propulsion engines.
The life of the propulsion engine can be extended. As described above, the attitude control of the hull by the flapper is executed in various ways corresponding to the hull and external changes.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The most preferred embodiment of a ship with a submersible propulsion engine according to the present invention will be specifically described below with reference to FIGS. First, referring to FIG. 1, a ship 100 with a submersion type propulsion engine according to the present invention includes a submersion propulsion main body 10 in which a propulsion engine SK having a weight function and a propulsion function is housed in the water W, and an upper portion of the submersion propulsion main body 10. And a hull 30 which is attached by a connecting member 20 and floats above the waterline W1. An appropriate gap size or space is provided between the submerged propulsion body 10 and the hull 30 so that the influence of transverse waves when the ship is stopped is reduced.

The submerged propulsion body (capsule) 10 has two
The outer wall of the heavy structure has a streamlined shape that is almost the same as the appearance of dolphins and whales that match fluid dynamics, and the joining edges are airtightly joined so that it can be separated into two parts. At the tip of the submerged propulsion body 10, a spherical bow 10 having a damper function formed of urethane rubber or the like that can be switched between high speed and low speed running
Further, the tail end 10B of the submersible propulsion body 10 is equipped with A, and a variable pitch propulsion screw 11 and a cowl 12 and a hull 3 are provided.
The flapper 13 and 14 for controlling the horizontal posture of 0, vertical movement and inclination, and the control cylinder C and the like are provided. The submersion propulsion body 10 is also provided with flappers 15 and 16 on the right and left sides of the main body to suppress a phenomenon in which the bow of the ship rises and the stern of the ship dives into the water when sailing, and maintains a stable sailing attitude and strong wind. On the sea with high waves, the flappers 13, 14, 15 and 16 serve to lift the bow and prevent the bow from suffering waves. Furthermore, the flapper 1
3, 14, 15, 16 are for high speed navigation (screw 11
The hull 30 is floated above the water surface at the maximum pitch (1), and the navigation is made small so as not to receive the resistance of water. This control is performed by computer processing various information such as the attitude sensor, speed sensor, ups and downs sensor of the hull. Further, when the trolling is at a low speed (the pitch of the screw 11 is minimized), the hull 30
It is a normal sailing attitude with the water on the surface.

In the submerged propulsion body 10, a fuel tank T, a prime mover (diesel engine, etc.) DE, a speed change mechanism 17, a variable pitch controller 18 for the screw 11 and the like are provided in a horizontal posture to provide a weight function and a propulsion function. The interior of the promotion organization SK with. Therefore, the weight of the submerged propulsion main body 10 is selected so that the weight in water is almost zero (the buoyancy and the weight are substantially the same). Of course, from the upper part of the submersible propulsion main body 10 to the inside, air forcibly supplied to the prime mover (diesel engine etc.) DE,
A supply / exhaust pipe for discharging the exhaust gas of the prime mover (diesel engine etc.) to the outside is connected, and an oil supply pipe to the fuel tank T and an inlet / outlet port for maintenance are arranged in an airtight state. The long keel 19 provided at the bottom of the submersion propulsion main body 10 is intended to ensure the safety of the hull 30, to prevent shallow water, and to protect the submersion propulsion main body 10.

The hull 30 attached to the upper part 10C of the submersion propulsion main body 10 by the connecting member 20 and floating above the water surface W1 has a low basin shape as shown in FIGS. . The bow 30A side of the hull 30 has a narrow bottom that dives below the surface of the water, while the top of the hull 30 has a wide lateral width and a long and low deck 31 in the front and rear. In addition, the bottom of the stern 30B side is wide, and the cabin 32 and the cockpit 33 are mounted on this boat.
Equipped with high places such as. The deck front-rear length L1 on the side of the bow 30A is equal to the cabin 32 and the cockpit 3 on the side of the stern 30B.
It is set to be longer than the front-rear length L2 such as 3. That is,
The front-rear length L1 of the deck 31, the cabin 32, and the cockpit 3
The relationship between the front-rear length L2 and the front-back length L2 is L as shown in FIGS.
The relationship of 1 = 2/3 × L and L2 = 1/3 × L is set. Further, the height of the deck on the side of the bow 30A is lowered as H1, and the height of the passenger cabin 32 and the cockpit 33 on the side of the stern 30B is raised as H2.

The relationship between the front and rear dimensions L1 and L2 and the height H
Due to the relationship of 1 and H2, when a ship or the like anchored at the port receives a strong cross wind, a function of directivity to the wind is added to turn the direction of the hull (especially, the bow) toward the windward side. Of course, this directional function can be more completely achieved by a hull configuration such as a narrow bow, a wide belly and stern, and a high stern.
..By tilting the deck to the deck 31 side or sliding it to the stern side (shown by the broken line), the bow side is maximally reduced in resistance to cross wind and the directivity of the vessel toward the windward is improved. ing.

The present invention having the above construction operates as follows. First, as shown in FIG. 1, the ship 100 has its center of gravity G immersed in water and is set in a submersible propulsion body 10 having a weight function and a propulsion function, which is below the water surface (draft line) W1. Underwater W. As a result, the hull 30 strongly exerts the restoring force by the action of the float and the spillage. That is, the hull 30 is prevented from rolling significantly even when a side wind or a transverse wave is generated due to the action of spilling up and the damping action of the flapper. Since it does not flood, it quickly restores its normal posture. Therefore, the vessel can be safely operated even in the sea where strong wind waves are high.

Further, the ship 100 stopped at the harbor suppresses the rolling by the action of spilling up and the damping action of the flapper even when a strong cross wind is received, and the front-rear length L1 of the deck 31 on the bow side is If the length is set to be longer than the front-rear length L2 of the stern side passenger cabin, cockpit, etc., and if the wave avoidance 34 is tilted or slid backward together with the thin bottom of the bow and the low deck 31, the direction of the hull 30 (particularly , The bow) is strongly directed to the wind by pointing the windward side.

Since the submerged propulsion main body 10 is separated from the hull 30 and the propulsion engine is arranged in the main body 10, the space under the deck 31 can be effectively utilized widely. become. In addition, the horizontal attitude control by each flapper 13, 14, 15, 16 eliminates the phenomenon of rolling and bowing of the small boat, and the stern diving into the water when navigating a small ship. To act. Further, the prime mover, the transmission and the like are also held in a horizontal posture, and the lubricating oil and the like are evenly circulated to these propulsion engines, which prolongs the life of the propulsion engines. Also, on the sea with high wind and waves, the flapper controls the bow to prevent the bow from being overwhelmed, and the flapper's reverse action to prevent capsizing is also demonstrated.

Further, at low speed such as trolling, the pitch of the screw 11 is reduced to navigate. On the contrary, at the time of high-speed navigation, the flapper 13, 14, 15, 16 lifts the hull 30 from the water surface W1 to minimize the water resistance, and increases the pitch of the screw 11 to achieve economical fuel-efficient operation. . Further, when the submerged propulsion main body 10 becomes lighter due to the decrease in the fuel in the fuel tank T, the hull 30 is lifted more than necessary, and the screw 11 tries to cause air cavitation.
3,14,15,16 makes the hull 30 ideal water surface W
It is possible to operate by lowering it to below 1.

As described above, the ship with a submersible propulsion engine of the present invention is ideally suited to the ship 30 in response to the operating conditions and weather conditions by controlling the flappers 13, 14, 15, and 16. There is an effect that it can be controlled to a different hull attitude. In addition, the submersible propulsion body 10 that is submerged in water and accommodates a propulsion mechanism having a weight function and a propulsion function allows the hull 30
The center of gravity position G of the ship becomes underwater W below the water line, and the ship 100
It is possible to completely prevent capsizing. Further, since the propulsion mechanism and the like are not housed in the hull 30, various functions such as effective use of the space of the bottom of the ship are exhibited.

The present invention is not limited to the above-mentioned embodiment, and it goes without saying that design changes can be freely made within the scope of the invention. For example, when the propulsion engine SK of the ship 100 is out of order, the auxiliary engine E provided in the stern 10B may be used for navigation. In addition, the design of the hull 30, the cabin, etc. can be changed to various designs, the members can be arranged on the deck 31 according to the use of the ship, and the bottom space of the ship can be used in various ways. Further, it is possible to freely change the detailed configuration of each part of the submersion propulsion main body 10 and the contents stored therein.

[0029]

[Effect] As described above, the present invention is composed of the submersible propulsion body which is submerged in water and accommodates a propulsion engine having a weight function and a propulsion function, and a hull attached to the upper part of the submersion propulsion body and floating above the water surface. The ship's center of gravity is located in the submerged propulsion body, which is in the water below the water surface (draft line), and it has the effect of exerting a strong restoring force even when crosswinds and transverse waves occur due to the action of floats and rising spills. Yes, the hull does not capsize, and even if it capsizes, it has the effect of quickly restoring its normal posture.
Therefore, it guarantees safe vessel operation even on high seas with strong winds and waves.

Further, the bow side is provided with a long and low deck forward and backward, and the stern side is provided with high places such as a passenger cabin and a cockpit. Since the length of the ship is set longer than the front-rear length of the ship, even when the ship is stopped, strong directionality to the wind is exerted by directing the direction of the hull (especially the bow) to the windward side even if a strong cross wind is received, resulting in a capsize accident. Has the effect of completely preventing.

Since the propulsion engine is arranged in the submerged propulsion main body separated from the hull, the space of the bottom of the ship can be widely and effectively utilized, and in particular, the space can be remarkably utilized in a small boat. In addition, various unreasonable phenomena such as swaying of the small boat and the bow rising during navigation, the stern diving into the water, and cavitation phenomena are freely controlled by the flapper, and the stable navigation posture keeps the boat comfortable and comfortable. Guarantee fuel economy operation. Further, since the prime mover, the transmission and the like are arranged in a horizontal posture, the lubricating oil is evenly circulated to these propulsion engines, and there are various effects such as prolonging the life of the propulsion engines. In addition, the surface charge tank can be enlarged and long-distance navigation is possible.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a ship with a submersion type propulsion engine according to the present invention.

FIG. 2 is a cross-sectional view showing a ship with a submersible propulsion engine according to the present invention.

FIG. 3 is a plan view showing a ship with a submersible propulsion engine according to the present invention.

FIG. 4 is a side view showing a ship with a submersible propulsion engine according to the present invention.

FIG. 5: A of FIG. 3 showing a ship with a submersible propulsion engine according to the present invention
It is a sectional view taken along the line A.

FIG. 6 is a side view of a conventional small vessel.

[Explanation of symbols]

100 Vessel with submersion type propulsion engine 10 Submersion propulsion main body 20 Connection member 30 Hull 30A Bow 30B Stern 31 Deck 32,33 Cabin and cockpit 10A Spherical bow 10B Tail end 11 Screw 13,14,15,16 Flapper L1 Deck front / rear length L2 Cockpit front and rear length H1 Deck height H2 Guest room height W Underwater W1 Water surface (draft line)

Claims (4)

[Claims] 1. A submerged propulsion body which is submerged in water and accommodates a propulsion engine having a weight function and a propulsion function, and a hull attached to an upper part of the submerged propulsion body and floating on the water surface. A ship with a submerged propulsion system. 2. The watercraft with a submersion type propulsion engine according to claim 1, wherein a submersion propulsion main body is internally provided with a propulsion engine having at least a fuel tank, a prime mover and a speed change mechanism, and having a weight function and a propulsion function. , A ship with a submersible propulsion engine, characterized in that its weight in water is almost zero. 3. A watercraft with a submersion propulsion engine according to claim 1, wherein the submersion propulsion body has a streamlined shape, and a tip of the submersion propulsion body is provided with a spherical bow having a damper function, and the submersion propulsion body is provided. A watercraft with a submersible propulsion mechanism, which is provided with a flapper on the middle abdomen and has a propulsion screw, a Kaji and a flapper at the tail end. 4. The watercraft with a submerged propulsion engine according to claim 1, wherein the hull includes a long and low deck on the bow side in the front and rear, and high places such as a passenger cabin and a cockpit on the stern side, A submersible propulsion vessel characterized in that the front-rear length of the bow on the bow side is set longer than the front-rear length of the cabin, cockpit, etc. on the stern side.