Low-wave-making tracked vessel and tracked vessel propulsion method

Abstract

A low-wave-making tracked vessel and a tracked vessel propulsion method, wherein the tracked vessel comprises a hull (1), a track device, and a blade device arranged on a track (21); a driving wheel (22) is arranged at one end of the track (21); a driven wheel (23) is arranged at the end of the track (21) distant from the driving wheel (22); a blade plate (31) is arranged on the outer surface of the track (21) and forms, with the outer surface of the track (21), a backward inclination angle opposite to the movement direction of the track (21); blade tips (32) are arranged at the front end of the blade plate (31) and extend outward at an angle from the front end of the blade plate (31) in a direction away from the track. During movement, the blade plate (31) and the blade tips (32) moving with the track (21) utilize the reactive force of water to provide the vessel with forward thrust and lift, while continuously directing the water displaced from the bow toward the underside of the hull, eliminating the pressure generated between the bow and water during movement, thereby significantly reducing the wave-making resistance of the vessel.

Description

Low-wave crawler boat and crawler boat propulsion method Technical Field

[0001] The present invention relates to the technical field of shipbuilding, in particular to a low-wave-making crawler boat and a crawler boat propulsion method. Background Art

[0002] Shipping is an important mode of transport, using ships to carry passengers and cargo by water. However, due to the influence of wave resistance, especially at speeds above 30 knots, wave resistance increases exponentially. Even with significantly increased propulsion power, the effect remains limited. Therefore, since the invention of ships, displacement ships have struggled to increase their speed, typically exceeding 35 knots.

[0003] Summary of the Invention

[0004] The purpose of the present invention is to provide a low-wave-making crawler vessel and a propulsion method for solving the problems of large wave-making resistance, low sailing speed and high energy consumption during the sailing of ships.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a low-wave crawler boat, comprising a hull, a crawler device and a blade device provided on the crawler device, wherein the crawler device comprises:

[0006] crawlers, which are arranged on both sides or the front end of the hull and can be divided into two parts, above water and underwater;

[0007] a driving wheel, disposed at one end of the crawler belt and meshing with the inner surface of the crawler belt;

[0008] A driven wheel is provided at one end of the crawler away from the driving wheel and meshes with the inner surface of the crawler;

[0009] The paddle assembly includes a paddle plate mounted on the outer surface of the track and a paddle tip connected to the paddle plate. When the paddle plate and paddle tip rotate with the track, the reaction force of the water propels the hull forward. Due to the backward tilt angle of the paddle plate, an upward lift is generated, lifting the hull off the water surface and significantly reducing the ship's travel resistance. Simultaneously, the paddle plate and paddle tip also continuously guide water that squeezes the bow during travel to the bottom of the ship, thereby eliminating the pressure generated between the bow and the water during travel and significantly reducing wave-making resistance.

[0010] A low-wave crawler vessel comprises a hull, a crawler device and a blade device provided on the crawler device, wherein the crawler device comprises:

[0011] Symmetrical crawlers are provided on both sides or the front end of the hull and are located below the deck of the ship;

[0012] a driving wheel, disposed at one end of the crawler belt and meshing with the inner surface of the crawler belt;

[0013] A driven wheel is provided at one end of the crawler away from the driving wheel and meshes with the inner surface of the crawler;

[0014] The blade device comprises:

[0015] The paddle plate is provided on the outer surface of the crawler and forms a caster angle with the outer surface of the crawler that is opposite to the running direction of the crawler, and the caster angle is 30°-70°.

[0016] The blade tip is arranged at the front end of the blade plate and forms an angle with the front end of the blade plate and extends outward toward a side away from the crawler track.

[0017] Furthermore, the length of the paddle plate is greater than the length of the paddle tip.

[0018] Furthermore, the crawler device also includes an upper supporting wheel and a lower supporting wheel, the upper supporting wheel is arranged on the upper top surface of the crawler and engages with the inner surface of the crawler, and the lower supporting wheel is arranged on the lower bottom surface of the crawler and engages with the inner surface of the crawler.

[0019] Furthermore, the upper supporting wheel and the lower supporting wheel are connected by a connecting beam.

[0020] Furthermore, the hull also includes protective plates, which are respectively located on both sides of the crawler and are detachably connected to the hull.

[0021] Furthermore, the underwater part of the hull is a monohull or a catamaran structure.

[0022] Furthermore, the crawlers are provided on both sides or the front end of the hull and are located below the hull.

[0023] Another aspect of the present invention provides a crawler boat propulsion method, comprising the following steps:

[0024] S1: The driving wheel rotates and drives the crawler tracks installed on the driving wheel and the driven wheel to rotate. The crawler tracks are installed on both sides or the front end of the hull;

[0025] S2: During the rotation of the crawler belt, the paddle plate provided on the outer surface of the crawler belt and the blade tip connected to the paddle plate are driven to move;

[0026] S3: When the paddle plate and the blade tip rotate along with the crawler track, they provide forward force and lift to the hull while continuously leading the water squeezed by the bow to the bottom of the ship.

[0027] The crawler vessel and the low-wave-making crawler propulsion method of the present invention have two application modes.

[0028] When this technology is applied to a high-speed catamaran, the paddles, moving with the tracks through the water, provide forward thrust for the hull. They also draw water pressure from the tracks' surface to the hull's bottom, reducing wave resistance. The backward-angled paddles also provide upward lift, which lifts the hull and significantly reduces resistance. When the hull pitches and the paddles partially break free from the water, the paddle tips, bent at an angle opposite to the blades, exert downward force on the hull under the action of the water, keeping the paddles at a stable draft. This provides sufficient thrust while preventing the paddles from slipping, ensuring stability and significantly increasing the vessel's speed. By simply varying the speed ratio and direction of the tracks, the vessel can easily turn and reverse, achieving high maneuverability.

[0029] 2. When the propulsion method of the present invention is applied to a large-tonnage ship with a long hull, the crawler can be installed at the front end of the hull to form a forward propulsion method. The two sets of crawlers arranged transversely at the bow can control the rotation speed and steering respectively. By changing the rotation speed ratio and rotation direction of the two crawlers, the purpose of adjusting the course can be achieved. During the movement of this crawler forward propulsion method, the paddle plate and the paddle tip can continuously guide the water that squeezes the water surface of the crawler during driving to the bottom of the hull. This process not only enables the ship to obtain forward force and reduces wave resistance, but also the local negative pressure during the movement of the paddle in the water brings a large amount of air into the bottom of the ship. This air can form a large number of bubbles. Since the bubbles in the water can effectively reduce the viscosity of the water, the friction resistance between the hull and the water is reduced, the mechanical efficiency of the ship is improved, and the energy saving effect is achieved.

[0030] Compared with the existing technology, the beneficial effects of the present invention are: due to the reduction of wave-making resistance and friction resistance, the navigation speed is greatly improved, the propulsion efficiency of the ship is also improved, and the energy-saving effect is obvious. In addition, due to the use of track speed difference to adjust the course and turn around, the ship has good maneuverability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings:

[0032] FIG1 is a schematic structural diagram of a low-wave-making crawler vessel according to a first embodiment of the present invention.

[0033] FIG2 is a front view of the crawler of the low-wave-making crawler vessel of the present invention.

[0034] FIG3 is a schematic diagram of the overall structure of the low-wave-making crawler vessel of the present invention.

[0035] FIG4 is a schematic structural diagram of a low-wave-making crawler vessel according to a second embodiment of the present invention.

[0036] In the figure: 1-hull, 11-protection plate, 21-track, 22-driving wheel, 23-driven wheel, 24-upper supporting wheel, 25-lower supporting wheel, 26-connecting beam, 31-blade plate, 32-blade tip. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions of the two application forms of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0038] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0039] Embodiment 1, as shown in Figures 1 to 3, the present invention provides a low-wave crawler vessel, comprising a hull 1, a crawler device, and a blade device provided on the crawler device, wherein the crawler device comprises:

[0040] Symmetrical crawlers 21 are installed on both sides directly below the hull 1. The inner side of the crawlers 21 has teeth and grooves. The speed ratio and rotation direction of the two crawlers can be adjusted by the control system to achieve the purpose of adjusting the course.

[0041] The driving wheel 22 is a driving gear. The driving wheel 22 is installed at the rear end of the hull 1 in the forward direction. The driving wheel 22 is connected to the engine of the hull 1 through a rotating shaft. The teeth on the driving wheel 22 engage with the tooth grooves on the inner side of the track 21, so that the rotation of the driving wheel 22 can pull the track 21 to rotate.

[0042] The driven wheel 23 is arranged at the front end of the hull 1 in the forward direction. The driven wheel 23 is a driven gear. The teeth on the driven wheel 23 engage with the tooth grooves on the inner side of the track 21. The driven wheel 23 and the driving wheel 22 form a support for the track 21 to ensure the stability of the rotation of the track 21.

[0043] The blade device comprises:

[0044] The paddle plate 31 is a rectangular plate welded to the outer side surface of the crawler 21 or made integrally with the crawler 21. The inclination direction of the paddle plate 31 is opposite to the running direction of the crawler 21, and a backward inclination angle opposite to the running direction of the crawler 21 is formed on the outer surface of the crawler 21. The backward inclination angle is 30°-70°. When the paddle plate 31 rotates with the crawler 21, it provides thrust for the hull 1, and at the same time can interact with water to provide an upward lift for the hull 1, so that the hull 1 rises from the water surface.

[0045] The blade tip 32 is a rectangular plate with the same width as the blade plate 31. The blade tip 32 and the blade plate 31 are integrated, and there is an angle of about 90° between the blade tip 32 and the blade plate 31. When the blade device moves in the water, water will form a turbulent flow within the angle between the blade tip 32 and the blade plate 31. Under normal circumstances, during the rotation of the track 21, the lift generated by the blade plate 31 is greater than the downward pull of the blade tip 32, ensuring that the hull 1 is lifted off the water surface. When encountering waves, the hull 1 is bumpy or the speed of the track 21 is too high, and the blade plate 31 is exposed to the water surface, the downward pull provided by the blade tip 32 can effectively stabilize the hull 1 and avoid the blade device from slipping on the water surface.

[0046] The crawler 21 of the low-wave crawler boat of the above-mentioned embodiment 1 is installed just below the hull 1, and a paddle board 31 is provided which rotates simultaneously with the crawler 21 and has a backward tilt angle of 30-70 degrees. The paddle board 31 moves in the water and interacts with the water to provide forward thrust for the hull 1. The paddle board 31 not only provides forward thrust for the hull 1 but also provides an upward lift for the hull 1, thereby lifting the hull 1 off the water surface, greatly reducing the sailing resistance of the hull 1 in the water, and at the same time, in order to avoid the hull 1 from rotating too fast during navigation, the paddle board 31 is provided with a plurality of paddle boards. The hull 1 is now lifted excessively and the paddle plate 31 is slipping on the water surface. There is an angled blade tip 32 at the front end of the paddle plate 31. The function of the blade tip 32 is that when the hull 1 is lifted to a certain height or encounters wind and waves and the hull 1 is bumpy, the paddle plate 31 is partially exposed to the water surface. The blade tip 32 forms a downward pulling force under the interaction with the water. The downward pulling force generated by the blade tip 32 and the upward lifting force generated by the paddle plate 31 interact with each other to ensure that the blade device always maintains a stable waterline, thereby ensuring the stability of the hull 1 during navigation.

[0047] Embodiment 2, as shown in FIG4 , is a low-wave crawler vessel, comprising a hull 1, a crawler device, and a blade device provided on the crawler device, wherein the crawler device comprises:

[0048] The crawler belt 21 is provided at the front end of the hull 1. The crawler belt 21 is symmetrical on both sides and the speed can be controlled separately.

[0049] a driving wheel 22 disposed at one end of the crawler belt 21 and meshing with the inner surface of the crawler belt 21;

[0050] The driven wheel 23 is provided at one end of the crawler belt 21 away from the driving wheel 22 and meshes with the inner surface of the crawler belt 21;

[0051] The paddle assembly includes:

[0052] The paddle plate 31 is provided on the outer surface of the crawler 21 and forms a caster angle with the outer surface of the crawler 21 in the opposite direction of the running direction of the crawler 21. Since the lift requirement is not high at this time, it is only necessary to provide lift to prevent the bow from sinking during driving, so the caster angle can be larger, but should not exceed 90 degrees;

[0053] The blade tip 32 is provided at the front end of the blade plate 31 and forms a corner with the front end of the blade plate 31 and extends outward toward a side away from the crawler track 21 .

[0054] The crawler 21 of the low wave-making crawler boat of this embodiment is installed at the front end of the hull 1. The two crawlers arranged transversely can change the rotation speed and steering respectively to achieve the purpose of adjusting the course and turning around. The total width of the two crawlers should be greater than or equal to the width of the bow water-facing cross-section. For a monohull, the width between the two parallel crawlers should be reduced as much as possible to minimize the wave-making resistance. This solution is particularly suitable for large and medium-sized flat-bottomed boats.

[0055] Similar to Example 1, the paddle plate 31 moves in the water along with the track 21. The function of the paddle tip 32 is to increase the disturbance with the water, ensure that the water flow is effectively led to the bottom of the ship, and form a local negative pressure area between the bow and the water to eliminate the pressure between the bow and the water when the ship is moving, thereby achieving the purpose of reducing wave-making resistance and improving the mechanical efficiency of the ship.

[0056] As shown in Figure 1, in order to further ensure the stability of the operation of the crawler 21, multiple upper supporting wheels 24 and lower supporting wheels 25 are installed between the driving wheel 22 and the driven wheel 23. The upper supporting wheels 24 roll in contact with the upper top surface of the crawler 21, and the lower supporting wheels 25 roll in contact with the lower bottom surface of the crawler 21, thereby supporting the crawler 21 and keeping the crawler 21 taut during operation, thereby avoiding jamming of the crawler 21 under high-speed rotation.

[0057] At the same time, the upper tug wheel 24 and the lower tug wheel 25 are connected by a connecting beam 26. The connecting beam 26 can ensure the stability of the upper supporting wheel 24 and the lower supporting wheel 25 in the crawler 21 and prevent the upper supporting wheel 24 and the lower supporting wheel 25 from deviating from the crawler 21.

[0058] As shown in Figures 3 and 4, in order to further ensure the stability of the rotation of the track 21, detachable protective plates are installed on both sides of the track 21. The protective plates cover the track 21 so that only the lower part of the track 21 leaks out. The protective plates can prevent debris in the water from entering the track 21, preventing the track 21 from being stuck by debris and affecting the rotation of the upper and lower supporting wheels 25, thereby improving safety.

[0059] The draft of the crawler boat of the present invention should be designed to be below the centerline of the driven wheel 23 , and the length of the blade plate 31 should be greater than the blade tip 32 .

[0060] Example 3

[0061] A crawler boat propulsion method comprises the following steps:

[0062] S1: The driving wheel rotates and drives the crawler tracks installed on the driving wheel and the driven wheel to rotate. The crawler tracks are installed on both sides or the front end of the hull;

[0063] S2: During the rotation of the crawler belt, the paddle plate provided on the outer surface of the crawler belt and the blade tip connected to the paddle plate are driven to move;

[0064] S3: When the paddle plate and the blade tip rotate along with the crawler track, they provide forward force and lift to the hull while continuously leading the water squeezed by the bow to the bottom of the ship.

[0065] In summary:

[0066] The track 21 is installed under the hull 1. The interaction between the paddle plate 31 and the water makes the hull 1 higher than the water surface, reducing the driving resistance of the hull 1. At the same time, the interaction between the blade tip 32 and the water will not cause the hull 1 to be lifted too high, causing the paddle plate 31 to slip on the water surface. While greatly improving the sailing speed of the ship, it also ensures the mechanical conversion efficiency of the track 21 and the paddle plate 31, reducing the energy consumption of the hull 1 during navigation.

[0067] The track 21 is installed at the front end of the hull 1, and the water flow forming pressure at the bow is led to the bottom of the hull through the paddle plate 31 and the blade tip 32, so that a local negative pressure area is formed between the bow and the water, eliminating the pressure generated between the bow and the water when the ship is moving, reducing the wave-making resistance, and at the same time a large amount of air is also brought into the bottom of the ship along with the paddle device, and the bubbles formed also reduce the friction resistance between the hull and the water, greatly improving the mechanical efficiency of the ship.

[0068] In addition to the above-mentioned preferred embodiments, the present invention has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A low wave-making tracked ship, comprising a hull, a tracked device and a paddle device provided on the tracked device, characterized in that, The crawler device includes: Crawlers, provided on both sides of the hull; A driving wheel, provided at one end inside the crawler and meshing with the inner surface of the crawler; A driven wheel, provided at one end inside the crawler away from the driving wheel and meshing with the inner surface of the crawler; The blade device includes blade plates provided on the outer surface of the crawler and blade tips connected to the blade plates. When the blade plates and the blade tips rotate with the crawler, while providing forward movement force and lift force for the hull, the water squeezing the bow is continuously led to the bottom of the ship.

2. A low-wave-making tracked ship, comprising a hull, a tracked device, and a paddle device provided on the tracked device, characterized in that, The crawler device includes: Crawlers, provided at the front end of the hull; A driving wheel, provided at one end inside the crawler and meshing with the inner surface of the crawler; A driven wheel, provided at one end inside the crawler away from the driving wheel and meshing with the inner surface of the crawler; The blade device includes blade plates provided on the outer surface of the crawler and blade tips connected to the blade plates. When the blade plates and the blade tips rotate with the crawler, while providing forward movement force for the hull, the water squeezing the bow is continuously led to the bottom of the ship.

3. The low wave-making crawler ship according to claim 1 or 2, characterized in that The blade plates are provided on the outer surface of the crawler and form a backward inclination angle opposite to the running direction of the crawler with the outer surface of the crawler; The blade tips are provided at the front end of the blade plates and extend outward with a corner facing away from the crawler at the front end of the blade plates.

4. The low wave-making crawler ship according to claim 1 or 2, characterized in that The width of the symmetric crawlers is greater than or equal to the width of the cross-section of the underwater water-facing part of the bow.

5. A low wave-making tracked ship according to claim 1 or 2, characterized in that The blade plates are provided on the outer surface of the crawler and form a backward inclination angle opposite to the running direction of the crawler with the outer surface of the crawler, and the angle of the backward inclination angle is 30° - 70°.

6. A low-wave-making tracked ship according to claim 1 or 2, characterized in that, The length of the blade plates is greater than the length of the blade tips.

7. A low-wave-making tracked ship according to claim 1 or 2, characterized in that, The hull further includes protective plates, which are respectively located on both sides of the crawler and are detachably connected to the hull.

8. A propulsion method for a tracked ship, characterized in that, Including the following steps: S1: The driving wheel rotates and drives the crawlers installed on the driving wheel and the driven wheel to rotate. The crawlers are installed on both sides or the front end of the hull; S2: During the rotation of the crawlers, the blade plates provided on the outer surface of the crawlers and the blade tips connected to the blade plates are driven to move; S3: When the blade plates and the blade tips rotate with the crawlers, while providing forward movement force and lift force for the hull, the water squeezing the bow is continuously led to the bottom of the ship.

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