A high speed rescue boat with variable buoyancy

Abstract

The application discloses a high-speed rescue boat with convertible floating state and relates to the technical field of lifesaving equipment. The high-speed rescue boat comprises a boat body, a cabin arranged at the front end of the boat body and a rescue platform arranged at the tail of the boat body. The cabin is provided with an upper shell with a preset height. The upper shell is provided with a switch door which is connected with the rescue platform and the inside of the cabin. The tail end of the boat body is provided with a plurality of water inlet tunnels with one end open and the other end closed. The water inlet tunnels are symmetrically arranged on both sides of the waterline below the longitudinal center axis of the boat body and extend forward from the tail end of the boat body by a preset length. The water inlet tunnels arranged at the bottom of the rescue platform make the high-speed rescue boat have a certain tail inclination when floating on the water surface. Rescue personnel can easily and quickly rescue the wounded to the rescue platform, avoid the risk of overturning of the rescue boat, do not need to climb over the bulwark, save time and effort, and effectively improve the rescue efficiency.

Description

Technical Field

[0001] This invention relates to the field of lifesaving equipment technology, and in particular to a high-speed rescue boat with a changeable buoyancy. Background Technology

[0002] Currently, high-speed rescue boats generally adopt an open structure without a hull, with both crew and rescued personnel on the open deck. In rainy weather or bad sea conditions, the personnel on board have no protective equipment. The International Lifesaving Equipment Code (LSA) stipulates that rescue boats should have a self-righting function if they capsize when used in bad sea conditions. However, in order to have enough space for movement inside the boat, open-type high-speed rescue boats usually have a separate self-righting device at the stern, which occupies the space at the stern. Therefore, when high-speed rescue boats are working, rescue can only be carried out on the side. There is a bulwark on the outside of the side deck, and the rescued personnel need to cross the bulwark to enter the boat.

[0003] The existing open-top high-speed rescue boats have the following problems: 1. All personnel are exposed on the open deck. In windy or stormy weather or rough sea conditions, personnel may get wet or be hit by waves crashing onto the deck, posing a certain risk to the safety of the personnel inside the boat, especially the injured who have already been rescued; 2. When conducting rescues from the side, the weight of the personnel inside the boat and the person being rescued is concentrated on one side, causing the rescue boat to tilt. If waves are hitting the hull at this time, the rescue boat may capsize; 3. The bulwark on the side has a certain height, and the draft of the hull remains unchanged. When rescuing a person who has fallen into the water, the personnel on board need to climb over the top of the bulwark to drag the person into the boat. If the person who has fallen into the water is unable to move, the rescue will be very difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a high-speed rescue boat with a variable buoyancy. This high-speed rescue boat with a variable buoyancy achieves self-righting by setting an upper hull, thereby enabling stern rescue. A water inlet tunnel is set at the stern, which makes rescue easier.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A high-speed rescue boat with variable buoyancy includes a hull, a cabin located at the front of the hull, and a rescue platform located at the stern of the hull. The cabin has an upper shell of a predetermined height, and the upper shell has a door connecting the rescue platform and the interior of the cabin. The stern of the hull, located at the bottom of the rescue platform, has multiple water inlet tunnels with one open end and the other closed. The water inlet tunnels are symmetrically arranged on both sides below the waterline of the longitudinal centerline of the hull and extend forward from the stern of the hull by a predetermined length.

[0007] There are two water intake tunnels.

[0008] The hull includes a lower outer shell and a lower inner shell connected internally and externally, and the upper shell includes an upper outer shell and an upper inner shell connected internally and externally. Foaming material is provided between the lower outer shell and the lower inner shell, and between the upper outer shell and the upper inner shell.

[0009] The upper shell and the cabin are fitted with anti-collision fenders.

[0010] The upper hull is equipped with lifelines on both sides and reflective strips on both sides and top.

[0011] A hook is installed at the top of the center of gravity.

[0012] The hook extends downward from the top of the upper hull to the bottom of the hull and is connected to the bottom of the hull.

[0013] The rescue platform is equipped with rubber protective strips on its outer side.

[0014] The hull is also equipped with a water pump, which is installed on the center line of the hull. The water pump's suction port is located at the bottom of the hull, and the water nozzle is located outside the stern plate.

[0015] The cabin contains a fuel tank, which is located at the bottom center of the cabin.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are:

[0017] The present invention discloses a high-speed rescue boat with variable buoyancy, comprising a hull, a cabin located at the front of the hull, and a rescue platform located at the stern of the hull. The cabin has an upper shell of a predetermined height, and the upper shell has a door connecting the rescue platform and the interior of the cabin. At the stern of the hull, at the bottom of the rescue platform, there are multiple water inlet tunnels with one end open and the other end closed. The water inlet tunnels are symmetrically arranged on both sides below the waterline of the longitudinal centerline of the hull and extend forward from the stern of the hull by a predetermined length. By designing an upper hull, the entire cabin forms a fully enclosed structure. This achieves self-righting functionality without the need for additional equipment and effectively protects the crew from wind, rain, and waves, making the rescue boat suitable for operation in high sea states. It also frees up space for a rescue platform at the stern, avoiding the risks associated with large-angle heeling during side rescues. A water intake tunnel is constructed at the bottom of the rescue platform. The tunnel's cross-sectional dimensions and forward extension length were determined through calculations of the rescue boat's weight, stability, and buoyancy. This ensures that when the high-speed rescue boat is upright on the water's surface, it exhibits a slight stern heel tilt, with the upper surface of the stern rescue platform slightly below the waterline. When the rescue boat reaches the vicinity of the injured person in the water, the driver maneuvers the high-speed rescue boat to reverse and approach the injured person. At this time, due to water entering the bottom water intake tunnel, the stern edge of the boat is lower than the waterline, and the rescue platform is submerged in the water and below the injured person's body. Rescuers can easily and quickly pull the injured person to the rescue platform, avoiding the risk of the rescue boat capsizing and eliminating the need to cross the bulwark, saving time and effort and effectively improving rescue efficiency. In addition, after the rescue is completed, when the rescue boat reaches a speed of three knots, due to the inertia of the water, the water in the water intake tunnel is quickly discharged, thereby reducing the overall weight of the rescue boat and avoiding any performance impact when the rescue boat is running at high speed.

[0018] In summary, the present invention, a high-speed rescue boat with a variable buoyancy, solves the technical problem of inconvenient rescue operations in existing high-speed rescue boats. By setting up an upper hull, the present invention forms a fully enclosed structure for the entire cabin, achieving self-righting without the need for additional equipment, and effectively protecting the personnel on board from wind, rain, and waves, making the rescue boat suitable for operation in high sea states. At the same time, rescuers can easily and quickly rescue the injured to the rescue platform, avoiding the risk of the rescue boat capsizing, and eliminating the need to cross the bulwark, saving time and effort, and effectively improving rescue efficiency. Attached Figure Description

[0019] Figure 1 It is an external front view of a high-speed rescue system with a changeable floating state;

[0020] Figure 2 yes Figure 1 Top view;

[0021] Figure 3 yes Figure 1 Front view;

[0022] Figure 4 This is an internal front view of a high-speed rescue system capable of changing its floating state;

[0023] Figure 5 This is a top view without the upper shell;

[0024] Figure 6 yes Figure 4 Sectional view of AA;

[0025] Figure 7 Schematic diagram of the tail structure layout.

[0026] In the diagram, 1. Hull, 11. Lower outer shell, 12. Lower inner shell, 13. Collision guardrail, 14. Lifeline, 15. Reflective strip, 16. Hook, 2. Cabin, 3. Rescue platform, 31. Rubber protective strip, 32. Rescue handrail, 4. Upper shell, 41. Upper outer shell, 42. Upper inner shell, 5. Opening door, 61. Water pump, 62. Drive shaft, 63. Engine, 64. Fuel tank, 71. Water intake tunnel, 72. Reinforcing members. Detailed Implementation

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] The orientations mentioned in this specification are based on the orientation of the AA during normal operation of the present invention, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a high-speed rescue boat with a changeable buoyancy includes a hull 1, with a cabin 2 and a rescue platform 3 arranged fore and aft on the hull 1.

[0030] The hull 2 ​​is equipped with an upper shell 4 of a preset height, which forms a sealed hull 2 ​​with the hull 1. The crew and rescued personnel are housed inside the hull 2, which can prevent injury to the personnel on board from wind, rain and waves in severe weather and sea conditions. A collision protection fender 13 is installed at the junction of the upper shell 4 and the hull 2.

[0031] By setting the upper shell 4, the cabin 2 is made into a pointed shape at the top, thus forming a roly-poly shape. The height of the upper shell 4 is calculated based on the length and weight of the rescue boat. By appropriately increasing the size of the upper shell 4, the upper shell 4 can achieve the function of righting itself after the rescue boat capsizes.

[0032] like Figure 4As shown, the hull 1 includes a lower outer shell 11 and a lower inner shell 12 connected internally and externally, and the upper shell 4 includes an upper outer shell 41 and an upper inner shell 42 connected internally and externally. The lower outer shell 11, lower inner shell 12, upper outer shell 41, and upper inner shell 42 are made of fiberglass composite material, resulting in high hardness and strength. Buoyancy chambers are provided between the lower outer shell 11 and lower inner shell 12, and between the upper outer shell 41 and upper inner shell 42. The buoyancy chambers are filled with foamed material as floats to provide reserve buoyancy for the rescue boat, ensuring its unsinkability even in the event of damage. The hull 1 and upper shell 4 adopt a sandwich structure, which improves the rigidity of the hull and provides some insulation for the crew compartment.

[0033] like Figure 7 As shown, the upper shell 4 is equipped with a switch door 5 that connects the rescue platform 3 and the interior of the cabin 2.

[0034] Rescue platform 3 is located at the stern of the hull 1. Its large size allows for the placement of a standard stretcher, enabling crew members to rescue those in the water. It also allows rescued individuals to be placed on stretchers and carried into the crew compartment for further treatment. Rubber protective strips 31 are installed on the outer side of rescue platform 3 to prevent injuries to those being rescued from impacts when they are transferred to it. Rescue platform 3 allows for rescue operations at the stern of the high-speed rescue boat, avoiding the risk of personnel falling into the water and capsizing due to concentrated weight on the sides of the vessel.

[0035] The high-speed rescue boat has a propulsion system installed at the stern. This system consists of a water pump 61, a drive shaft 62, and an engine 63. The water pump 61 is mounted on the centerline of the stern sealing plate of the rescue platform 3. The water pump 61's suction port is located at the bottom of the boat, and the spray nozzle is on the outside of the stern sealing plate. Because the propulsion impeller of the water pump 61 is located inside the spray nozzle, it avoids accidental contact with personnel during rescue operations. The water pump 61 is connected to the engine 63 in the engine room via the drive shaft 62. A fuel tank 64 is located in the crew compartment at the front of the high-speed rescue boat, between the lower outer shell 11 and the lower inner shell 12. This fuel tank is connected to the engine 63 via fuel lines and is used to supply fuel to the propulsion system during rescue boat operation.

[0036] The stern of the hull 1 is located at the bottom of the rescue platform 3 and has multiple water inlet tunnels 71 with one end open and the other end closed. The water inlet tunnels 71 are symmetrically arranged on both sides below the waterline of the longitudinal centerline of the hull 1 and extend forward from the stern of the hull 1 for a predetermined length.

[0037] In this embodiment, two water inlet tunnels 71 are provided. In practical applications, four or six can be designed, as long as they can be symmetrically arranged on both sides of the water pump 61. This embodiment does not impose any restrictions on this. The bottom of the water inlet tunnel 71 should have sufficient strength and rigidity to form an integral part with the bottom of the hull 1. The top is connected to the lower inner shell 12 through the stiffener 72. The cross-sectional dimensions and forward extension length of the water inlet tunnel 71 need to be determined by calculating the weight, stability, and buoyancy of the high-speed rescue boat. When the high-speed rescue boat floats upright on the water surface, the upper surface of the rescue platform 3 at the stern of the high-speed rescue boat is slightly lower than the waterline, and the high-speed rescue boat has a certain stern tilt, but this stern tilt will not affect the boat's performance. When the high-speed rescue boat reaches the vicinity of the injured person in the water, the driver maneuvers the boat in reverse to approach the injured person. At this time, due to water entering the hull tunnel 71, the edge of the stern rescue platform 3 is lower than the waterline, and the rescue platform 3 is submerged in water and below the injured person's body. In this way, the rescue personnel can easily and quickly rescue the injured person onto the rescue platform 3, avoiding the risk of the rescue boat capsizing and eliminating the need to cross the bulwark, saving time and effort, effectively improving rescue efficiency, and lowering the center of gravity of the rescue boat, improving the stability of the rescue boat during rescue. When the rescue boat reaches a speed of three knots, due to the inertia of the water, the water in the hull tunnel 71 is quickly discharged, thus keeping the stern of the boat in a horizontal position to prevent aggravating the injury to the injured person. The rescue personnel on board can use a stretcher to lift the injured person into the crew compartment in the front of the boat. There is a rescue handrail 32 on each side of the stern of the rescue boat for the rescue personnel to hold on to during the rescue process or as a fixing point for the seat belt.

[0038] A collision protection fender 13 is installed at the junction of the lower outer shell 1 and the upper outer shell 2. Lifelines 14 are installed on both sides of the lower outer shell 1. Reflective strips 15 are installed on both sides and the top of the upper outer shell 41. A single-point hook 16 is installed at the center of gravity in the middle of the hull. The structure of the hook 16 extends from the top of the upper outer shell 4 to the hull 1 and is connected to the bottom structure of the hull 1.

[0039] This invention, a high-speed rescue boat with variable buoyancy, solves the technical problem of inconvenient rescue operations in existing high-speed rescue boats. By constructing an upper hull, the entire cabin forms a fully enclosed structure, achieving self-righting without additional equipment and effectively protecting personnel from wind, rain, and waves. This allows the rescue boat to operate in high sea states. It also frees up space for a rescue platform at the stern, avoiding the risks associated with large-angle heeling during side rescues. A water inlet tunnel is constructed at the bottom of the rescue platform, allowing for adjustments to the rescue boat's weight, stability, and buoyancy. The tunnel cross-sectional dimensions and forward extension length are calculated and determined so that the high-speed rescue boat has a certain stern tilt when floating on the water surface, and the upper surface of the stern rescue platform is slightly below the waterline. When the high-speed rescue boat reaches the vicinity of the injured person in the water, the driver maneuvers the high-speed rescue boat to reverse and approach the injured person. At this time, due to water entering the tunnel under the boat, the stern edge of the boat is lower than the waterline, and the rescue platform is submerged in the water and below the injured person's body. Rescuers can easily and quickly rescue the injured person to the rescue platform, avoiding the risk of the rescue boat capsizing, and without having to cross the bulwark, saving time and effort and effectively improving rescue efficiency.

[0040] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A high-speed rescue boat with variable buoyancy, characterized in that: The vessel includes a hull, a cabin located at the front of the hull, and a rescue platform located at the stern of the hull. The cabin has an upper shell of a predetermined height, and the upper shell has a door connecting the rescue platform and the interior of the cabin. The stern of the hull, located at the bottom of the rescue platform, has multiple water inlet tunnels with one end open and the other end closed. The openings face the stern of the rescue vessel. The water inlet tunnels are symmetrically arranged on both sides below the waterline of the longitudinal centerline of the hull and extend forward from the stern of the hull by a predetermined length. The cross-sectional dimensions and the preset forward extension length of the water intake tunnel are calculated and determined based on the weight, stability, and buoyancy of the rescue boat, so that the rescue boat has a tail tilt when floating upright, and the upper surface of the rescue platform is below the waterline.

2. The high-speed rescue boat with variable buoyancy according to claim 1, characterized in that: There are two water intake tunnels.

3. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: The hull includes a lower outer shell and a lower inner shell connected internally and externally, and the upper shell includes an upper outer shell and an upper inner shell connected internally and externally. Foaming material is provided between the lower outer shell and the lower inner shell, and between the upper outer shell and the upper inner shell.

4. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: The upper shell and the cabin are fitted with anti-collision fenders.

5. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: Lifelines are provided on both sides of the upper hull, and reflective strips are provided on both sides and the top of the upper hull.

6. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: A hook is installed at the top of the rescue boat at its center of gravity.

7. A high-speed rescue boat with a changeable buoyancy according to claim 6, characterized in that: The hook extends downward from the top of the upper hull to the bottom of the hull and is connected to the bottom of the hull.

8. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: Rubber protective strips are installed on the outside of the rescue platform.

9. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: The hull is also equipped with a water pump, which is installed on the longitudinal centerline of the hull. The water pump's suction port is located at the bottom of the hull, and the water nozzle is located outside the stern plate.

10. A high-speed rescue boat with a changeable buoyancy according to claim 1, characterized in that: A fuel tank is located in the middle of the hull, at the bottom center of the cabin.

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