CN217917500U - Amphibious boat - Google Patents

Abstract

The utility model relates to an amphibious boat solves current amphibious boat when the aquatic operation, because the stern portion planing surface is too narrow, leads to the technical problem that navigation lift on water is not enough, acceleration time is slow, high-speed production dolphin motion and cabin are intake. The amphibious boat comprises a boat body, a water retaining mechanism arranged at the cabin door position of the stern part of the amphibious boat and a water slide plate assembly fixedly arranged at the stern part of the boat body; the water retaining mechanism comprises a supporting frame and a water retaining plate arranged on the supporting frame; one end of the support frame is hinged with a stern cabin door of the amphibious boat; under the action of external force, the supporting frame can be overturned up and down by taking the hinge shaft as a rotating shaft; when the supporting frame is turned downwards, the supporting frame is used as a boarding ladder; when the supporting frame is turned upwards, the water baffle can effectively shield the cabin door; the water slide plate assembly comprises at least two groups of water slide plates, the at least two groups of water slide plates are arranged on two sides of the stern part of the boat body, and the stern part sliding surface of the boat body is increased.

Description

Amphibious boat

Technical Field

The utility model relates to an amphibious boat.

Background

The amphibious boat has the double performance of a vehicle and a ship, is a speedboat which can travel in water and land, and has important function in traffic and transportation.

When the existing amphibious boat sails in water, the stern planing surface is too narrow due to tires on two sides, the stern water drainage volume is small, the overwater sailing lift force is insufficient, the time from a static state to a high-speed planing stage is long, and meanwhile, after the existing amphibious boat enters high-speed planing, the stability is poor, and a dolphin movement phenomenon may occur. Meanwhile, the envelope of the rear suspension frame causes the linearity discontinuity in water, the stern of the hull is seriously upwelled, and the hull cabin enters water.

Disclosure of Invention

The utility model aims at providing an amphibious boat to solve current amphibious boat when the aquatic operation, because the stern portion planing surface is too narrow, lead to the technical problem that the navigation lift on water is not enough, acceleration time is slow, high-speed production dolphin motion and cabin are intake.

The technical scheme of the utility model provides an amphibious boat, its special character lies in: the amphibious boat comprises a boat body, a water retaining mechanism arranged at the position of a cabin door of a stern part of the amphibious boat and a water slide plate assembly fixedly arranged at the stern part of the boat body;

the water retaining mechanism comprises a supporting frame and a water retaining plate arranged on the supporting frame; one end of the support frame is hinged with a stern cabin door of the amphibious boat; under the action of external force, the supporting frame can be overturned up and down by taking the hinge shaft as a rotating shaft; when the supporting frame is turned downwards, the supporting frame is used as a boarding ladder; when the supporting frame is turned upwards, the water baffle can effectively shield the cabin door;

the water slide plate assembly comprises at least two groups of water slide plates, the at least two groups of water slide plates are arranged on two sides of the stern of the boat body, and the sliding surface of the stern of the boat body is increased.

Furthermore, the water baffle is connected with the supporting frame in a sliding manner, and when the supporting frame is turned upwards, the water baffle can slide downwards along the supporting frame, so that the bottom of the water baffle is attached to the deck;

the effective water blocking area of the water baffle is slightly smaller than the area of the cabin door, so that when the supporting frame is turned upwards, the water baffle can effectively shield the cabin door and simultaneously ensure that a small amount of water can be discharged from a gap between the water baffle and the cabin door.

Further, the support frame comprises two first support rods arranged in parallel and two second support rods arranged in parallel; the first support rods extend along the y direction, the second support rods extend along the x direction, and the two second support rods are fixed between the two first support rods;

the water baffle is connected with the support frame in a sliding mode through a sliding sleeve sleeved on the first support rod.

Furthermore, the support frame further comprises hinge rods fixed at one ends of the two first support rods respectively, the hinge rods extend along the z direction, and the two hinge rods are hinged with door frames on two opposite sides of a stern cabin door of the amphibious boat respectively.

Furthermore, the supporting frame also comprises a limiting rod and a supporting frame;

the limiting rods are arranged on the two first supporting rods, are close to one end of the hinge rod and are used for limiting the sliding position of the sliding sleeve when the supporting frame is turned upwards;

the support frame is arranged on the two first support rods, one end of the hinge rod is far away from, the support frame is bent upwards relative to the first support rods, and the support frame is used for supporting the whole water retaining mechanism after being turned downwards.

Furthermore, the water baffle comprises a bottom plate and two side plates which are integrally arranged with the bottom plate, and the side plates are connected with the sliding sleeve; when the supporting frame is turned downwards, the bottom plate is positioned below the supporting frame;

a notch matched with the limiting rod is formed in the axial direction of the sliding sleeve, and when the supporting frame is turned upwards, the limiting rod slides relatively in the notch.

Furthermore, a fixing assembly is further arranged on the water baffle, and the water baffle is locked on the deck after the supporting frame is turned upwards to the right position.

Furthermore, in order to meet the requirement of light weight, the framework of the boat body mainly comprises a bottom girder frame, a bow support, a stern support, a front suspension mounting frame body, a rear suspension mounting frame body and a boat body support, and is formed by connecting aluminum alloy sections.

In order to further improve the overall rigidity, the aluminum alloy section is 7A48-T6, 6082-T6, 7050, 7A09 or 6061-T6, is in a rod shape, a strip shape or a column shape, and has an I-shaped, L-shaped, rectangular or T-shaped cross section.

Furthermore, the water skiing board comprises a first bottom board assembly and a vertical board assembly fixedly connected with the first bottom board assembly;

the first bottom plate assembly comprises a first bottom plate and a first top plate; the first bottom plate is a flat plate; the first top plate is an arc-shaped plate and is buckled on the first bottom plate;

one end of the vertical plate component is fixedly connected with the first top plate of the first bottom plate component, and the other end of the vertical plate component is fixedly connected with the stern of the amphibious boat.

Furthermore, the water skis are divided into two groups and are symmetrical left and right about the central axis of the boat body; the distance between the front end of the water skis and the tire is 50mm to 100mm, and the end of the water skis close to the tire is defined as the front end of the water skis.

Further, in order to improve the water receiving and draining effects, the first top plate is integrally formed by splicing m1 sub arc plates with different curvature radiuses, wherein m1 is a positive integer greater than or equal to 2.

In order to further improve the water receiving and draining effect, the vertex of the first top plate is close to the front end of the first top plate, and the end facing the head of the amphibious boat is defined as the front end of the first top plate.

Further, m1 is equal to 4; defining the 4 sub-arc plates as a first sub-arc plate, a second sub-arc plate, a third sub-arc plate and a fourth sub-arc plate from the rear end to the front end of the first top plate in sequence; the curvature radius ratio of the first sub-arc plate, the second sub-arc plate, the third sub-arc plate and the fourth sub-arc plate is 1; the chord length proportion corresponding to the first sub-arc plate, the second sub-arc plate, the third sub-arc plate and the fourth sub-arc plate is 4.

Further, in order to fill up the sliding surface as much as possible and simplify the structure, the first bottom plate is a rectangular flat plate, and the length-width ratio of the first bottom plate is between 1 and 1.5; the first base plate has a length to width ratio between 1.4 and 1.5.

Further, in order to reduce weight, a first hollow cavity is formed between the first top plate and the first bottom plate.

Further, in order to enhance the structural strength of the first bottom plate, the first bottom plate assembly further comprises n1 groups of first supporting plates which are arranged in the first hollow cavity and have shapes matched with the first hollow cavity, the tops of the n1 groups of first supporting plates are all in contact with the first top plate, the bottoms of the n1 groups of first supporting plates are all in contact with the first bottom plate, wherein n1 is a positive integer greater than or equal to 2.

Further, in order to simplify the processing and avoid generating an independent cavity with an overlarge cavity, the n1 groups of first supporting plates are parallel to each other and are arranged in the first hollow cavity at intervals along the x direction; the width direction of the first base plate is defined as the x direction, and the length direction of the first base plate is defined as the y direction.

Furthermore, in order to avoid the deformation of the first bottom plate caused by uneven stress, the intervals between the two adjacent groups of first supporting plates are equal; the interval between two adjacent groups of first supporting plates is filled with light materials.

Furthermore, in order to ensure the overall structural strength of the water skiing board, a first top plate of the first bottom plate assembly is provided with a vertical plate assembly mounting hole or groove, and one end of the vertical plate assembly is inserted into the vertical plate assembly mounting hole or groove, so that the vertical plate assembly is fixedly connected with the first top plate of the first bottom plate assembly.

Furthermore, the shape of the mounting hole or the groove of the vertical plate assembly is matched with the shape of the end part of the vertical plate assembly matched with the mounting hole or the groove, the mounting hole or the groove is positioned at the edge of the first top plate, and the mounting hole or the groove extends to two sides along the width direction of the first bottom plate assembly from the highest point of the curved surface of the first top plate.

Further, in order to reduce water resistance, the vertical plate assembly comprises a front plate and a rear plate which are oppositely arranged, and an arc-shaped left side plate and an arc-shaped right side plate which are oppositely arranged; the chord length ratio corresponding to the arc left side board and the chord length ratio corresponding to the arc right side board is 2, so that the water facing and draining effects can be obviously improved.

Further, a second hollow cavity is formed among the front plate, the rear plate, the arc-shaped left side plate and the arc-shaped right side plate; the size of the second hollow cavity along the x direction is gradually decreased from left to right.

Furthermore, the vertical plate assembly also comprises n2 groups of second supporting plates which are arranged in the second hollow cavity and are matched with the second hollow cavity in shape; wherein n2 is a positive integer greater than or equal to 1; the n2 groups of second supporting plates are parallel to each other and are arranged in the second hollow cavity at intervals along the z direction.

Furthermore, in order to ensure that the vertical plate assembly is stressed uniformly, the intervals between two adjacent groups of second supporting plates are equal; and light materials are filled in the space between two adjacent groups of second supporting plates.

Furthermore, the water skiing board comprises a second bottom board component and an attitude adjusting and supporting component hinged with the second bottom board component;

the second bottom plate assembly comprises a second bottom plate and a second top plate; the second bottom plate is a flat plate; the second top plate is an arc-shaped plate and is buckled on the second bottom plate;

one end of the posture adjusting and supporting component is hinged with a second top plate of the second bottom plate component, and the other end of the posture adjusting and supporting component is hinged with two sides of the stern of the boat body.

Furthermore, the water skis are divided into two groups and are symmetrical left and right about the central axis of the boat body; the front end of the water skis is 50mm to 100mm away from the tire, and the end of the water skis close to the tire is defined as the front end of the water skis.

Further, the second top plate is integrally formed by splicing m1 sub arc plates with different curvature radiuses, wherein m1 is a positive integer greater than or equal to 2.

Further, m1 is equal to 4; defining 4 sub arc plates as a first sub arc plate, a second sub arc plate, a third sub arc plate and a fourth sub arc plate in sequence; the curvature radius ratio of the first sub arc plate, the second sub arc plate, the third sub arc plate and the fourth sub arc plate is 1; the first sub arc plate, the second sub arc plate, the third sub arc plate and the fourth sub arc plate correspond to chord length ratios of 4.

Further, the second bottom plate is a rectangular flat plate, and the length-width ratio is between 1.4 and 1.5.

Furthermore, a hinge block is arranged on a second top plate of the second bottom plate assembly, and one end of the posture adjusting and supporting assembly is hinged to the hinge block.

Further, the posture adjustment support assembly comprises a fixed connecting rod and two telescopic connecting rods;

the articulated blocks are four, 2 articulated blocks close to the boat bow are fixed articulated blocks, the fixed articulated blocks close to the boat bow are directly articulated and fixed on the boat body, and the fixed articulated blocks far away from the boat bow are fixed on the boat body through fixed connecting rods; the 2 hinge blocks far away from the boat bow are floating hinge blocks and are hinged and fixed on the boat body through two telescopic connecting rods.

Further, a first hollow cavity is formed between the second top plate and the second bottom plate; n1 groups of first supporting plate bodies are arranged in the first hollow cavity, the shapes of the n1 groups of first supporting plate bodies are matched with those of the first hollow cavity, the tops of the n1 groups of first supporting plate bodies are all in contact with the second top plate, the bottoms of the n1 groups of first supporting plate bodies are all in contact with the second bottom plate, and n1 is a positive integer greater than or equal to 2.

Further, the n1 groups of first supporting plates are parallel to each other and are arranged in the first hollow cavity at intervals along the x direction; defining the width direction of the second bottom plate as the x direction and the length direction of the second bottom plate as the y direction; the intervals between two adjacent groups of first supporting plate bodies are equal.

Furthermore, light materials are filled in the space between two adjacent groups of the first supporting plate bodies.

The utility model has the advantages that:

1. the amphibious boat of the utility model is provided with the water retaining mechanism and the water skiing plate component at the same time; the water retaining mechanism is simple and practical in structure and convenient to operate, and when the supporting frame is turned upwards, the water retaining plate can effectively shield the cabin door, so that a large amount of water cannot enter the cabin door; when the supporting frame is turned downwards, the supporting frame can be used as a boarding ladder; the operation is convenient and the functions of water retaining and boarding the boat and the escalator are realized. The aquaplane component can increase the stern planing surface, and after the amphibious boat is launched, the aquaplane is below the draft line, so that the water discharge volume can be increased, the draught is reduced, the wave resistance is reduced, the water immersion area is reduced after the draught is reduced, the viscous resistance is also reduced, and therefore, the aquaplane can reduce the total navigation resistance of the boat body, and the amphibious boat can realize high navigation speed more easily;

2. the utility model discloses the effective manger plate area of breakwater of amphibious boat slightly is less than the hatch door area, when can guaranteeing that braced frame upwards overturns, effectively shelters from the hatch door, can guarantee again simultaneously that a small amount of water can follow the clearance discharge between manger plate mechanism and the hatch door. Set up two limit structure simultaneously on braced frame of breakwater, when braced frame upset targets in place, carry on spacingly to the breakwater, when braced frame upwards overturns, guarantee that the breakwater can effectively shelter from the hatch door, when braced frame overturns downwards, guarantee that the breakwater does not influence personnel and board.

3. The water baffle of the amphibious boat of the utility model is provided with a notch matched with the limiting rod on the sliding sleeve, thereby ensuring stable sliding and realizing maximum sliding stroke;

4. the hull framework of the amphibious boat adopts aluminum alloy sections to meet the lightweight requirement;

5. the utility model discloses fixed aquaplane can be chooseed for use to the aquaplane of amphibious boat, also can choose for use slidingtype aquaplane, because of the aquaplane is flat structure under the upper arc, produces lift at the afterbody during navigation, can reduce hull longitudinal inclination to make hull and rivers contact surface antedisplacement, owing to the lean of planing hull bow portion cut, boat bow rivers reduce, therefore rivers are difficult for piling up, reduce the frequency of dolphin motion effectively, make the navigation more steady when high-speed navigation. When the fixed type water skiing board is adopted, the water skiing board is directly and fixedly arranged on two sides of the stern part of the amphibious boat, and the amphibious boat is convenient to install, simple in structure, high in use reliability, convenient to maintain and low in cost. When the sliding type aquaplane is adopted, the aquaplane is hinged to the stern of the amphibious boat, after the amphibious boat is launched, the angle of the aquaplane can be adjusted in real time through the posture adjusting and supporting assembly, the gliding surface is increased through the aquaplane, the angle of the aquaplane can be adjusted and controlled in real time according to the navigation inclination angle of the amphibious boat, the aquaplane can be guaranteed to adapt to the speed and the posture of the amphibious boat in real time, therefore, the amphibious boat can enter the sliding state quickly, and better navigation stability is achieved.

6. The utility model discloses fixed aquaplane of amphibious boat comprises bottom plate subassembly and riser subassembly, and the roof of bottom plate subassembly is by the different polylith sub-arc board integrated into one piece shaping of curvature radius for when rivers pass through the aquaplane, the upper and lower pressure difference changes, therefore the velocity of water is different, more is favorable to back suspension department rivers to discharge, eliminates the torrent and forms, thereby reduces hull navigation resistance.

7. The utility model discloses slidingtype aquaplane of amphibious boat comprises bottom plate subassembly and gesture adjustment supporting component, and the roof of bottom plate subassembly by the integrative concatenation shaping of the different polylith sub-arc board of curvature radius for the bottom plate subassembly has good meeting water and drainage effect.

8. The utility model discloses bottom plate subassembly is hollow structure in the amphibious boat aquaplane, and weight is lighter, can effectively increase navigation lift on water, shorten the time of skidding, increase the stability of high-speed navigation, can not exert great weight to amphibious boat stern portion, consequently can not produce the influence to the heart of floating of amphibious boat, keeps initial longitudinal inclination.

9. The utility model discloses a digifax is built and the optimal structural parameter of bottom plate subassembly is confirmed in emulation calculation to verify through dragging the mould experiment, make the effect of aquaplane reach the optimum.

Drawings

FIG. 1 is a schematic structural view of an amphibious boat according to an embodiment;

FIG. 2a is a schematic view of a water blocking mechanism in the amphibious boat according to the embodiment I;

FIG. 2b is a schematic view of a water stop mechanism in the amphibious boat of the embodiment;

FIG. 3 is a first schematic view illustrating a position of a water guard plate of the water guard mechanism according to the embodiment;

FIG. 4 is a schematic view of the position of the water baffle mechanism in the embodiment;

FIG. 5 is a first schematic view of the installation position of the water stop mechanism in the embodiment;

FIG. 6 is a schematic view of the installation position of the water stop mechanism in the embodiment II;

FIG. 7 is a front view of a fixed surfboard in an embodiment;

FIG. 8 is a schematic structural diagram of a fixed type water ski bottom plate assembly in the embodiment;

FIG. 9 is a schematic structural view of a stationary skateboard riser assembly of an embodiment;

FIG. 10 is a schematic cross-sectional view of a fixed water ski according to an embodiment;

FIG. 11 is a schematic view of a sliding water board structure according to an embodiment;

FIG. 12 is a schematic view of the structure of the floor assembly of the sliding floor in the embodiment;

FIG. 13 is a schematic cross-sectional view of a slide gate floor assembly according to an embodiment;

FIG. 14 is a schematic view of the installation of the sliding water skis in the embodiment;

fig. 15 is a hull framework structure of an amphibious boat in an embodiment, wherein a, b and c are schematic diagrams of different viewing angles respectively;

fig. 16 shows a front and a rear suspension frames in the hull frame of the amphibious boat in the embodiment, wherein a is the front suspension frame and b is the rear suspension frame;

the reference numbers in the figures are: 1. a hull; 2. a water retaining mechanism; 3. a wiper blade assembly; 4. a front suspension mounting space; 5. a rear suspension mounting space; 6. a cab; 7. a handrail;

21. a support frame; 211. a first support bar; 212. a second support bar; 213. a hinged lever; 214. a limiting rod; 215. a support frame; 22. a water baffle; 221. a sliding sleeve; 2211. a notch; 222. a base plate; 223. a side plate; 23. fixing the bolt; 24. a cabin door;

31. a vertical plate assembly; 311. a front plate; 312. a back plate; 313. an arc-shaped left side plate; 314. an arc-shaped right side plate; 315. a second hollow cavity; 3151. a second support plate; 32. a first backplane assembly; 322. a first base plate; 321. a first top plate; 3211. a riser assembly mounting hole or slot; 3212. a first top panel edge; 3213. a first sub-arc plate; 3214. a second sub-arc plate; 3215. a third sub-arc plate; 3216. a fourth sub-arc plate; 323. a first hollow cavity; 3231. a first support plate;

41. a posture adjustment support assembly; 411. fixing the connecting rod; 412. a telescopic link; 42. a second backplane assembly; 422. a second base plate; 421. a second top plate; 4211. a hinged block; 4213. a first sub arc plate; 4214. a second sub arc plate; 4215. a third sub arc plate; 4216. a fourth sub arc plate; 423. a first hollow cavity; 4231. a first support plate body;

51. a bottom girder frame; 52. bow support; 53. a stern support; 54. a front suspension mounting frame; 55. a rear suspension mounting frame; 56. the hull supports.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures of the present invention are described in detail below, and it is apparent that the described embodiments are a part, not all or all of the embodiments of the present invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, the amphibious boat of the embodiment has an integral linear structure, and can meet high-speed sailing on water; meanwhile, the mounting parts of the front and rear suspensions are excavated to form a front suspension mounting space 4 and a rear suspension mounting space 5, so that the width direction in the overall dimension of the mounted suspension can meet the requirements of road regulations; the driver cab 6 is provided, drivers and passengers can be prevented from being wetted when traveling on rainy days or on water and surfing, the driver cab 6 is provided with glass, driving requirements and internal brightness requirements are guaranteed, and meanwhile, the glass is of a push-pull structure, and ventilation requirements in the driver cab 6 are guaranteed; a personnel passage is reserved around the cab 6, and the top of the cab is provided with a handrail 7; the bow is provided with the splash-proof strip and the wave-blocking mechanism to ensure that a large amount of water does not flow onto the front windshield and ensure that a driver has good sight; the stern part is provided with a water retaining mechanism 2, the water retaining mechanism 2 can effectively shield the cabin door 24, so that a large amount of water cannot enter the cabin door 24, and the stern part is also provided with a water slide plate assembly 3, so that the lift force of water navigation and the stability during high-speed navigation are improved; and a personnel passage is reserved on the deck close to the right side.

The water stop mechanism 2 and the water slide plate assembly 3 are described in detail below:

as can be seen from fig. 2a and 2b, the water guard mechanism 2 of the present embodiment is composed of a support frame 21 and a water guard 22, and the water guard 22 is mounted on the support frame 21. With reference to fig. 5 and fig. 6, it can be seen that one end of the support frame 21 is hinged to the door frame of the stern hatch 24 of the amphibious boat, so that the support frame 21 can be turned up and down by using a hinge shaft as a rotating shaft; the supporting frame 21 can be used as a boarding ladder after being turned downwards, and can be used as a water retaining mechanism after being turned upwards.

As can be seen from fig. 3 and 4, the supporting frame 21 of the present embodiment includes two first supporting rods 211, two second supporting rods 212, two hinge rods 213, two limiting rods 214, and a supporting frame 215; the two first supporting rods 211 are arranged in parallel with each other and extend along the y direction; the two second support bars 212 are disposed parallel to each other, extend in the x-direction, and are fixed between the two first support bars 211. The two hinge rods 213 are parallel to each other and are respectively fixed at one end of the two first support rods 211 and extend along the z direction; the support frame 215 is fixed to the other ends of the two first support bars 211, and is bent upward with respect to the first support bars 211. The two limiting rods 214 are parallel to each other and are respectively fixed on one ends of the two first supporting rods 211 close to the hinge rod 213. The water guard plate 22 of this embodiment includes a bottom plate 222 and two side plates 223 integrally disposed on the bottom plate 222, wherein the two side plates 223 are slidably connected to the first supporting rod 211 through a sliding sleeve 221 sleeved on the first supporting rod 211. As can be seen from fig. 4, the sliding sleeve 221 is sleeved on the first supporting rod 211 between the two second supporting rods 212; and a notch 2211 matched with the limiting rod 214 is formed along the axial direction of the sliding sleeve 221, and when the supporting frame 21 is turned upwards, the limiting rod 214 can relatively slide in the notch 2211. The structure of the support frame 21 and the splash plate 22 is adapted to the structure of the stern hatch 24 of the amphibious boat, and in other embodiments, if the hatch 24 is of other shapes, the structure of the splash plate 22 and the support frame 21 also needs to be adapted. Preferably, the effective water retaining area of the water retaining plate 22 is slightly smaller than the area of the cabin door 24, so that when the supporting frame 21 is turned upwards, the water retaining plate 22 can effectively shield the cabin door 24, and a small amount of water can be discharged from the gap between the water retaining mechanism 2 and the cabin door 24 while a large amount of water cannot enter the cabin door 24.

The working process of the water blocking mechanism 2 of the embodiment is described in detail with reference to fig. 5 and 6:

fig. 5 is a schematic view of the water blocking mechanism 2 after the supporting frame 21 is turned upwards, the supporting frame 21 uses a hinge shaft as a rotating shaft, the water blocking plate 22 slides downwards along the first supporting rod 211 in the process of upwards turning under the action of an external force, the bottom of the water blocking plate 22 is basically attached to a deck under the limiting action of the limiting rod 214, the limiting rod 214 is located in the notch 2211 of the sliding sleeve 221 at the moment, and the water blocking plate 22 can be locked on the deck through the fixing bolt 23 after the supporting frame is turned in place.

Fig. 6 is a schematic view of the state that the supporting frame 21 is turned down and used as an escalator, and it can be seen from the figure that the supporting frame 215 is nearly horizontal, and supports the whole water stop mechanism 2, and the water stop plate 22 slides to the lowest position, and does not slide further under the limiting action of the second supporting rod 212; the water baffle 22 is integrally positioned below the supporting frame 21, so that the function of the boarding ladder is realized, and meanwhile, the personnel boarding is not influenced.

In this embodiment, the aquaplane is respectively added on both sides of the stern of the hull 1, and may be a fixed aquaplane (fig. 7) or a sliding aquaplane (fig. 11), and the fixed aquaplane and the sliding aquaplane are respectively described as follows:

the fixed water slide plate is arranged below the waterline, so that the drainage volume can be increased, the draught is reduced, the wave making resistance is reduced, the water immersion area is reduced after the draught is reduced, and the viscous resistance is also reduced, so that the fixed water slide plate can reduce the total navigation resistance of the boat body, and the amphibious boat can realize high navigation speed more easily; because the fixed water slide plate is of an upper arc lower flat structure, lift force is generated at the tail part during navigation, the longitudinal inclination angle of the boat body can be reduced, and therefore the contact surface between the boat body and water flow moves forwards.

The fixed water skiing board needs to be fixed on two sides of the stern of an amphibious boat, the mounting size in front is limited, the distance between the tire folding and unfolding envelope and the fixed water skiing board is 50 mm-100 mm, and the width size can be extended to the widest position according to the size limit of the amphibious boat. In other embodiments, the number of the fixed water skis can be increased according to actual needs.

As can be seen from fig. 7, the fixed water skiing board of the embodiment is mainly composed of a first bottom board assembly 32 and a vertical board assembly 31. The first bottom plate assembly 32 can be installed and fixed on two sides of the stern of the amphibious boat through the riser assembly 31, and the structures on the two sides are symmetrically arranged.

In the embodiment, a lightweight design is considered, the first bottom plate assembly 32 and the vertical plate assembly 31 are both hollow structures, and in other embodiments, both the first bottom plate assembly 32 and the vertical plate assembly 31 can be solid structures; as can be seen from fig. 8, the first bottom plate assembly 32 of the present embodiment includes a first bottom plate 322 and a first top plate 321; the first bottom plate 322 is a rectangular flat plate; aspect ratio of 1: and 2, digital-analog building and simulation calculation are carried out according to four proportions, verification is carried out through a die dragging test, the effect is obvious when the proportion is 1 to 1.5 in the die dragging test, in order to further determine the proportion relation, the interval is divided into five groups, and the die dragging test verification is further carried out, so that the length-width ratio of the first bottom plate 322 is finally determined to be 1 to 1.5, wherein the effect is most obvious when the length-width ratio is 1.4 to 1.5. First roof 321 is the arc, and it is not ideal enough to discover its meeting and drainage effect after adopting the first roof 321 of invariable curvature design to calculate in hydrodynamic model, and this embodiment calculates its meeting and drainage effect that corresponds with the camber summit antedisplacement or retrusion back, and discovery after contrasting, it is comparatively ideal with its meeting and drainage effect of curvature summit antedisplacement, and consequently the summit of this embodiment first roof 321 is close to the front end of first roof 321, and the one end of definition orientation amphibious boat head is the front end of first roof 321. Specifically, 4 sub arc plates with different curvature radii are integrally spliced and molded and are buckled on the first bottom plate 322, and a first hollow cavity 323 is formed between the first bottom plate 322 and the first bottom plate; in other embodiments, the number of sub-arc plates can be adjusted according to specific requirements. Determining structural parameters of 4 sub-arc plates by using a simulation method, verifying through a drag mold test, and finally determining that the curvature radius ratio of the first sub-arc plate 3213, the second sub-arc plate 3214, the third sub-arc plate 3215 and the fourth sub-arc plate 3216 is 1; the chord length ratio of the first sub-arc plate 3213, the second sub-arc plate 3214, the third sub-arc plate 3215, and the fourth sub-arc plate 3216 is 4.

In order to enhance the structural strength of the first bottom plate 322, 4 groups of first support plates 3231 are arranged in the first hollow cavity 323 along the x direction, the shape of the first support plates 3231 is adapted to the first hollow cavity 323, and as can be seen from fig. 10, the top of each first support plate 3231 contacts the first top plate 321, and the bottom of each first support plate 3231 contacts the first bottom plate 322. The 4 groups of first supporting plates 3231 are parallel to each other and are uniformly distributed at intervals along the x direction; the width direction of the first base plate 322 is defined as x-direction, and the length direction of the first base plate 322 is defined as y-direction. The space between two adjacent groups of the first support plates 3231 is filled with a light material (e.g., foam, etc.). Of course, in other embodiments, the number and arrangement of the first support plates 3231 may be adjusted according to actual requirements. In addition, a vertical plate assembly mounting hole or a groove 3211 is further formed in the first top plate 321, as shown in fig. 8, for fixing the vertical plate assembly 31, and the shape of the vertical plate assembly mounting hole or the groove 3211 is matched with the shape of the end portion of the vertical plate assembly 31 matching therewith, located at the edge 3212 of the first top plate, and extends from the highest point of the curved surface of the first top plate 321 to both sides along the width direction of the first bottom plate assembly 32.

As can be seen from fig. 9 and 10, the vertical plate assembly 31 of the present embodiment includes a front plate 311 and a rear plate 312 which are oppositely disposed, and an arc-shaped left side plate 313 and an arc-shaped right side plate 314 which are oppositely disposed, and a second hollow cavity 315 is formed between the front plate 311, the rear plate 312, the arc-shaped left side plate 313 and the arc-shaped right side plate 314; the size of the second hollow cavity 315 along the x direction decreases from left to right. The ratio of the chord length corresponding to the arc-shaped left side plate 313 to the chord length corresponding to the arc-shaped right side plate 314 is 2. A plurality of groups of parallel second supporting plates 3151 matched with the second hollow cavity 315 in shape are arranged in the second hollow cavity 315; a plurality of sets of second support plates 3151 are arranged at intervals in the z direction within the second hollow cavity 315. Of course, in other embodiments, the number and arrangement of the second supporting plates 3151 may be adjusted according to actual requirements. The intervals between the adjacent two sets of second support plates 3151 are equal. Between two adjacent sets of second support plates 3151The interval is filled with light materials. One end of the vertical plate assembly 31 is inserted into the vertical plate assembly mounting hole or the groove 3211, so that the vertical plate assembly 31 is fixedly connected with the first top plate 321 of the first bottom plate assembly 32. After the fixed water skis are installed and fixed on the amphibious boat, the water discharge volume of the boat body is increased by 0.5m ³ The draught is effectively reduced, and the sailing resistance is reduced; the boat body sliding surface is increased by 8 percent, and lift force is provided when the boat body sails, so that the amphibious boat can slide at high speed.

In this embodiment, the fixed aquaplane is installed to the amphibious boat by selecting the fixed aquaplane with different structures, and the verification test is performed to obtain the verification data shown in table 1:

TABLE 1

Note: the structure of the fixed draw runner of dysmorphism is the same with the fixed draw runner structure of this embodiment, and the difference lies in its sub-arc plate's quantity, radius of curvature and the chord length that corresponds, and the quantity of sub-arc plate in the fixed draw runner of dysmorphism is 2, and the radius of curvature ratio of two sub-arc plates is 1.

As can be seen from table 1, after the fixed aquaplane of the present embodiment is added, the water sailing lift of the amphibious boat is increased by 15%, the peak-crossing speed is reduced from 14 knots to 12 knots, and the whole acceleration time is shortened by 8 seconds. Compared with fixed water skis with other structures, the water sailing lift force can be effectively increased, and the water skiing time is shortened; the stability of high-speed navigation is increased.

The sliding water slide plate is also arranged below a waterline, the angle of the sliding water slide plate can be adjusted according to information such as longitudinal inclination angle and speed of the boat body 1 after the sliding water slide plate is launched, the sliding water slide plate can be guaranteed to be in the best working state in real time, the sliding water slide plate needs to be fixed on two sides of the stern part of an amphibious boat, the front installation size is limited, the distance between the tire folding and unfolding envelope and the sliding water slide plate is 50-100 mm, and the width size can be extended to the widest position according to the size limit of the amphibious boat. In other embodiments, the number of the sliding water skis can be increased according to actual needs.

As can be seen from fig. 11, the sliding skateboard of the present embodiment is mainly composed of a second base plate assembly 42 and an attitude adjustment support assembly 41. The second bottom plate assembly 42 can be hinged on two sides of the stern part of the amphibious boat through the attitude adjusting support assembly 41, and the structures on the two sides are symmetrically arranged.

In the present embodiment, the second bottom plate 42 is a hollow structure in consideration of light weight design, and in other embodiments, the second bottom plate 42 may be a solid structure; as can be seen from fig. 12, the second bottom plate assembly 42 of the present embodiment includes a second bottom plate 422 and a second top plate 421; the second base plate 422 is a rectangular flat plate; aspect ratio of 1:2, digital-analog building and simulation calculation are carried out according to four proportions, and the results are verified through a dragging-model test, wherein the dragging-model test has a remarkable effect when the proportion is 1 to 1.5, in order to further determine the proportion relation, the interval is divided into five groups for further verifying the dragging-model test, and finally the length-width ratio of the second bottom plate 422 is determined to be 1 to 1.5, wherein the effect is most remarkable between 1.4 and 1.5. The second top plate 421 is an arc-shaped plate, and is integrally spliced and formed by 4 sub-arc-shaped plates with different curvature radii, and is buckled on the second bottom plate 422, and a first hollow cavity 423 is formed between the second top plate and the second bottom plate 422, as shown in fig. 13; in other embodiments, the number of sub-arc plates can be adjusted according to specific requirements. Determining structural parameters of 4 sub arc plates by using a simulation method, verifying through a drawing test, and finally determining that the ratio of the curvature radii of the first sub arc plate 4213, the second sub arc plate 4214, the third sub arc plate 4215 and the fourth sub arc plate 4216 is 1; first sub arc plate 4213, second sub arc plate 4214, third sub arc plate 4215 and fourth sub arc plate 4216 correspond to a chord length ratio of 4.

In order to enhance the structural strength of the second bottom plate 422, 4 groups of first support plate bodies 4231 are arranged in the first hollow cavity 423 along the x direction, the shape of the first support plate bodies 4231 is matched with that of the first hollow cavity 423, as can be seen from fig. 13, the top of each first support plate body 4231 is in contact with the second top plate 421, and the bottom of each first support plate body 4231 is in contact with the second bottom plate 422. 4 groups of first support plate bodies 4231 are mutually parallel and are uniformly distributed at intervals along the x direction; the width direction of the second base plate 422 is defined as the x direction, and the length direction of the second base plate 422 is defined as the y direction. The space between two adjacent groups of first support plate bodies 4231 is filled with a light material (such as foam). Of course, in other embodiments, the number and arrangement of the first support plate bodies 4231 may also be adjusted according to actual requirements. A hinge block 4211 (see fig. 12) is further provided on the second top plate 421 for hinge-connecting the posture adjustment support assembly 41.

As can be seen from fig. 14, the posture adjustment support assembly 41 of the present embodiment includes a fixed link 411 and two telescopic links 412; four hinged blocks 4211 are provided, which are 2 types in total, 2 hinged blocks 4211 close to the boat bow are fixed hinged blocks 4211, the fixed hinged block 4211 close to the side of the boat body 1 is directly hinged and fixed on the boat body 1, and the fixed hinged block 4211 far away from the side of the boat body 1 is fixed on the boat body 1 through a fixed connecting rod 411; the 2 hinge blocks 4211 far away from the boat bow are floating hinge blocks 4211, are hinged and fixed on the boat body 1 through two telescopic connecting rods 412, and are driven by a telescopic adjusting mechanism to rotate around the 2 hinge points on the boat bow side, so that the posture adjustment is achieved. Of course, in other embodiments, the number and the position of the posture adjustment support assemblies 41 may be adjusted according to actual requirements.

After the sliding aquaplane is installed and fixed on an amphibious boat, the 1-type drainage volume of the boat body is increased by 0.6m ³ The draught is effectively reduced, and the sailing resistance is reduced; the planing surface of the boat body 1 is increased by 9%, and lift force is provided when the boat body 1 sails, so that the amphibious boat can achieve high-speed planing.

In this embodiment, the sliding aquaplane is installed to the amphibious boat by selecting the sliding aquaplane with different structures, and the verification test is performed to obtain the verification data shown in table 2:

TABLE 2

Note: the structure of dysmorphism slip water board is the same with this embodiment slip water board structure, and the difference lies in its sub-arc plate's quantity, radius of curvature and the chord length that corresponds, and the quantity of sub-arc plate in the dysmorphism slip water board is 2, and the radius of curvature ratio of two sub-arc plates is 1.

As can be seen from table 2, after the sliding aquaplane of the present embodiment is added, the water sailing lift of the amphibious boat is increased by 15%, the peak-crossing time is shortened by 2 seconds, the boat enters the planing state, and the whole acceleration time is shortened by 8 seconds. Compared with sliding water skis with other structures, the water sailing lift force can be effectively increased, and the start time is shortened; the stability of high-speed navigation is increased.

Additionally, the utility model discloses still optimize hull skeleton, present automobile body skeleton adopts the steel structure mostly, and whole car weight is big, and bearing capacity descends, can't satisfy the operation requirement of amphibious boat. And the ship skeleton structure mostly adopts plate tailor-welding, and the local impact resistance is poor, so that the land impact load cannot be met. In the embodiment, the high-strength aluminum alloy section is used as the framework of the boat body, such as 7A48-T6, 6082-T6, 7050, 7A09 or 6061-T6, the use of the section is reduced, and the section mainly adopts a rod-shaped, strip-shaped or columnar section, and has an I-shaped, L-shaped, rectangular or T-shaped section. Meanwhile, the number of welding seams is reduced, so that the amphibious boat can meet the requirement of light weight and simultaneously ensure the integral rigidity and strength when running on land and on water. As shown in fig. 15, the framework structure of the amphibious boat of this embodiment mainly comprises six parts, namely a bottom girder frame 51, a bow support 52, a stern support 53, a front suspension mounting frame 54, a rear suspension mounting frame 55 and a hull support 56, wherein the bottom girder frame 51 is mainly formed by connecting an I-shaped frame, a T-shaped frame and a plurality of cross ribs, and the bottom girder frame 51 mainly bears the motion load generated by the front and rear suspensions, the power equipment and the water jet propulsion device. The bow support 52, the stern support 53 and the hull support 56 are all formed by welding high-strength aluminum alloy profiles, and mainly meet the overwater load of the amphibious boat and the design requirement of the boat. As shown in fig. 16, the front suspension attachment frame 54 and the rear suspension attachment frame 55 are also made of high-strength aluminum alloy sections, and are formed as a single frame structure independently to support the attachment and load of the front suspension and the rear suspension. After the main structure is welded, the main structure can be independently welded with the bottom girder frame 51, and the requirement on installation accuracy is met. This skeleton has used high strength aluminum alloy section bar in a large number, has replaced the tailor-welded structure in traditional boats and ships to reduce the welding seam quantity in the skeleton texture, the welding seam reduces about 67%, has reduced the quality of welded part, and the skeleton texture has been simplified to high strength aluminum alloy section bar simultaneously, and then has reached the lightweight of skeleton texture design.

Claims (35)

1. An amphibious boat, characterized in that: the water-retaining boat comprises a boat body (1), a water-retaining mechanism (2) arranged at the stern cabin door position and a water-sliding plate component (3) fixedly arranged at the stern of the boat body;

the water retaining mechanism (2) comprises a supporting frame (21) and a water retaining plate (22) arranged on the supporting frame (21); one end of the supporting frame (21) is hinged with a stern hatch door of the amphibious boat; under the action of external force, the supporting frame (21) can be turned over up and down by taking the hinge shaft as a rotating shaft; when the supporting frame (21) is turned downwards, the supporting frame is used as a boarding ladder; when the supporting frame (21) is turned upwards, the water baffle (22) can effectively shield the cabin door (24);

the water skiing board assembly (3) comprises at least two groups of water skiing boards, and the at least two groups of water skiing boards are arranged on two sides of the stern part of the boat body to increase the sliding surface of the stern part of the boat body.

2. An amphibious boat according to claim 1, characterised in that: the water baffle (22) is connected with the supporting frame (21) in a sliding mode, and when the supporting frame (21) is turned upwards, the water baffle (22) can slide downwards along the supporting frame (21) so that the bottom of the water baffle (22) is attached to a deck;

the effective water retaining area of the water baffle (22) is slightly smaller than the area of the cabin door (24), so that when the supporting frame (21) is turned upwards, the water baffle (22) can effectively shield the cabin door (24) and simultaneously can ensure that a small amount of water can be discharged from a gap between the water baffle (22) and the cabin door (24).

3. An amphibious boat according to claim 2, characterized in that: the supporting frame (21) comprises two first supporting rods (211) arranged in parallel and two second supporting rods (212) arranged in parallel; the first support rods (211) extend along the y direction, the second support rods (212) extend along the x direction, and the two second support rods (212) are fixed between the two first support rods (211);

the water baffle (22) is connected with the supporting frame (21) in a sliding way through a sliding sleeve (221) sleeved on the first supporting rod (211).

4. An amphibious boat according to claim 3, wherein: the support frame (21) further comprises hinge rods (213) fixed at one ends of the two first support rods (211) respectively, the hinge rods (213) extend along the z direction, and the two hinge rods (213) are hinged with door frames on two opposite sides of the stern cabin door (24) of the amphibious boat respectively.

5. An amphibious boat according to claim 4, characterised in that: the supporting frame (21) further comprises a limiting rod (214) and a supporting frame (215);

the limiting rods (214) are arranged on the two first supporting rods (211), are close to one ends of the hinge rods (213), and are used for limiting the sliding position of the sliding sleeve (221) when the supporting frame (21) is turned upwards;

the support frame (215) is arranged on the two first support rods (211), one end of each hinge rod (213) is far away from, and the support frame is bent upwards relative to the first support rods (211) and used for supporting the whole water retaining mechanism (2) after the support frame (21) is turned downwards.

6. An amphibious boat according to claim 5, characterised in that: the water baffle (22) comprises a bottom plate (222) and two side plates (223) integrally arranged with the bottom plate (222), and the side plates (223) are connected with the sliding sleeve (221); when the supporting frame (21) is turned downwards, the bottom plate (222) is positioned below the supporting frame (21);

a notch (2211) matched with the limiting rod (214) is formed in the axial direction of the sliding sleeve (221), and when the supporting frame (21) is turned upwards, the limiting rod (214) slides relatively in the notch (2211).

7. An amphibious boat according to claim 6, wherein: the water baffle (22) is further provided with a fixing assembly, and the water baffle (22) is locked on the deck after the supporting frame (21) is turned upwards to the right position.

8. An amphibious boat according to claim 7, characterised in that: the framework of the boat body (1) is mainly composed of a bottom girder frame, a bow support, a stern support, a front suspension mounting frame body, a rear suspension mounting frame body and a boat body support, and all the frames are formed by connecting aluminum alloy sections.

9. An amphibious boat according to claim 8, characterised in that: the aluminum alloy section is 7A48-T6, 6082-T6, 7050, 7A09 or 6061-T6, is rod-shaped, strip-shaped or columnar, and has an I-shaped, L-shaped, rectangular or T-shaped cross section.

10. An amphibious craft according to any one of claims 1-9, characterised in that:

the water skis comprise a first bottom plate component (32) and a vertical plate component (31) fixedly connected with the first bottom plate component (32);

the first bottom plate assembly (32) comprises a first bottom plate (322) and a first top plate (321); the first bottom plate (322) is a flat plate; the first top plate (321) is an arc-shaped plate and is buckled on the first bottom plate (322);

one end of the vertical plate component (31) is fixedly connected with a first top plate (321) of the first bottom plate component (32), and the other end of the vertical plate component is fixedly connected with a stern of an amphibious boat.

11. An amphibious boat according to claim 10, wherein: the two groups of water skis are bilaterally symmetrical about the central axis of the boat body (1); the distance between the front end of the water skis and the tire is 50mm to 100mm, and the end of the water skis close to the tire is defined as the front end of the water skis.

12. An amphibious boat according to claim 11, characterised in that: the first top plate (321) is integrally formed by splicing m1 sub arc plates with different curvature radiuses, wherein m1 is a positive integer larger than or equal to 2.

13. An amphibious boat according to claim 12, in which: the vertex of the first top plate (321) is close to the front end of the first top plate (321), and the end which is defined to face the head of the amphibious boat is the front end of the first top plate (321).

14. An amphibious boat according to claim 13, characterised in that: m1 is equal to 4; the 4 sub-arc plates are sequentially defined as a first sub-arc plate (3213), a second sub-arc plate (3214), a third sub-arc plate (3215) and a fourth sub-arc plate (3216) from the rear end to the front end of the first top plate (321); the curvature radius ratio of the first sub-arc plate (3213), the second sub-arc plate (3214), the third sub-arc plate (3215) and the fourth sub-arc plate (3216) is 1; the chord length proportion corresponding to the first sub-arc plate (3213), the second sub-arc plate (3214), the third sub-arc plate (3215) and the fourth sub-arc plate (3216) is 4.

15. An amphibious boat according to claim 14, characterised in that: the first bottom plate (322) is a rectangular flat plate, and the length-width ratio is between 1 and 1.5; the first base plate (322) has a length to width ratio between 1.4 and 1.5.

16. An amphibious boat according to claim 15, wherein: a first hollow cavity (323) is formed between the first top plate (321) and the first bottom plate (322).

17. An amphibious boat according to claim 16, wherein: the first bottom plate assembly (32) further comprises n1 groups of first supporting plates (3231) which are arranged in the first hollow cavity (323) and matched with the first hollow cavity (323) in shape, the tops of the n1 groups of first supporting plates (3231) are in contact with the first top plate (321), the bottoms of the n1 groups of first supporting plates (3231) are in contact with the first bottom plate (322), and n1 is a positive integer greater than or equal to 2.

18. An amphibious boat according to claim 17, wherein: the n1 groups of first supporting plates (3231) are parallel to each other and are arranged in the first hollow cavity (323) at intervals along the x direction; the width direction of the first base plate (322) is defined as the x direction, and the length direction of the first base plate (322) is defined as the y direction.

19. An amphibious boat according to claim 18, characterised in that: the intervals between two adjacent groups of first supporting plates (3231) are equal; the interval between two adjacent groups of first supporting plates (3231) is filled with light materials.

20. An amphibious boat according to claim 19, characterised in that: a vertical plate assembly mounting hole or groove (3211) is formed in the first top plate (321) of the first bottom plate assembly (32), and one end of the vertical plate assembly (31) is inserted into the vertical plate assembly mounting hole or groove (3211) to fixedly connect the vertical plate assembly (31) and the first top plate (321) of the first bottom plate assembly (32).

21. An amphibious boat according to claim 20, characterised in that: the shape of the vertical plate assembly mounting hole or groove (3211) is matched with the shape of the end part of the vertical plate assembly (31) matched with the vertical plate assembly mounting hole or groove, the vertical plate assembly mounting hole or groove is positioned at the edge (3212) of the first top plate, and the vertical plate assembly mounting hole or groove extends to two sides along the width direction of the first bottom plate assembly (32) from the highest point of the curved surface of the first top plate (321).

22. An amphibious boat according to claim 21, characterised in that: the vertical plate assembly (31) comprises a front plate (311) and a rear plate (312) which are arranged oppositely, and an arc-shaped left side plate (313) and an arc-shaped right side plate (314) which are arranged oppositely; the chord length ratio of the arc-shaped left side plate (313) to the arc-shaped right side plate (314) is 2.

23. An amphibious boat according to claim 22, wherein: a second hollow cavity (315) is formed among the front plate (311), the rear plate (312), the arc-shaped left side plate (313) and the arc-shaped right side plate (314); the size of the second hollow cavity (315) along the x direction is gradually decreased from left to right.

24. An amphibious boat according to claim 23, characterised in that: the vertical plate assembly (31) further comprises n2 groups of second supporting plates (3151) which are arranged in the second hollow cavity (315) and are matched with the second hollow cavity (315) in shape; wherein n2 is a positive integer greater than or equal to 1; the n2 groups of second supporting plates (3151) are parallel to each other and are arranged in the second hollow cavity (315) at intervals along the z direction.

25. An amphibious boat according to claim 24, wherein: the intervals between two adjacent groups of second supporting plates (3151) are equal; the interval between two adjacent groups of second supporting plates (3151) is filled with light materials.

26. An amphibious boat according to any one of claims 1 to 9, characterised in that: the water skiing board comprises a second bottom board component (42) and a posture adjusting and supporting component (41) hinged with the second bottom board component (42);

the second bottom plate assembly (42) comprises a second bottom plate (422) and a second top plate (421); the second bottom plate (422) is a flat plate; the second top plate (421) is an arc-shaped plate and is buckled on the second bottom plate (422);

one end of the posture adjusting and supporting assembly (41) is hinged with a second top plate (421) of the second bottom plate assembly (42), and the other end of the posture adjusting and supporting assembly is hinged with two sides of the stern of the boat body.

27. An amphibious boat according to claim 26, wherein: the two groups of water skis are bilaterally symmetrical about the central axis of the boat body (1); the front end of the water skis is 50mm to 100mm away from the tire, and the end of the water skis close to the tire is defined as the front end of the water skis.

28. An amphibious boat according to claim 27, wherein: the second top plate (421) is integrally formed by splicing m1 sub arc plates with different curvature radiuses, wherein m1 is a positive integer greater than or equal to 2.

29. An amphibious boat according to claim 28, wherein: m1 is equal to 4; defining 4 sub arc plates as a first sub arc plate (4213), a second sub arc plate (4214), a third sub arc plate (4215) and a fourth sub arc plate (4216) in sequence; the ratio of the radius of curvature of the first sub arc plate (4213), the second sub arc plate (4214), the third sub arc plate (4215) and the fourth sub arc plate (4216) is 1; the first sub arc plate (4213), the second sub arc plate (4214), the third sub arc plate (4215) and the fourth sub arc plate (4216) have a chord length ratio of 4.

30. An amphibious boat according to claim 29, wherein: the second base plate (422) is a rectangular flat plate with a length to width ratio between 1.4 and 1.5.

31. An amphibious boat according to claim 30, wherein: and a hinge block (4211) is arranged on a second top plate (421) of the second bottom plate assembly (42), and one end of the posture adjusting support assembly (41) is hinged to the hinge block (4211).

32. An amphibious boat according to claim 31, wherein: the posture adjustment support assembly (41) comprises a fixed connecting rod (411) and two telescopic connecting rods (412);

the hinged blocks (4211) are four, 2 hinged blocks (4211) close to the boat bow are fixed hinged blocks (4211), the fixed hinged blocks (4211) close to the boat body (1) side are directly hinged and fixed on the boat body (1), and the fixed hinged blocks (4211) far away from the boat body (1) side are fixed on the boat body (1) through fixed connecting rods (411); the 2 hinge blocks (4211) far away from the boat bow are floating hinge blocks (4211) and are hinged and fixed on the boat body (1) through two telescopic connecting rods (412).

33. An amphibious boat according to claim 32, wherein: a first hollow cavity (423) is formed between the second top plate (421) and the second bottom plate (422); n1 groups of first supporting plate bodies (4231) matched with the first hollow cavity (423) in shape are arranged in the first hollow cavity (423), the tops of the n1 groups of first supporting plate bodies (4231) are all in contact with the second top plate (421), the bottoms of the n1 groups of first supporting plate bodies (4231) are all in contact with the second bottom plate (422), and n1 is a positive integer greater than or equal to 2.

34. An amphibious boat according to claim 33, wherein: the n1 groups of first supporting plate bodies (4231) are mutually parallel and are arranged in the first hollow cavity (423) at intervals along the x direction; defining the width direction of the second bottom plate (422) as the x direction, and the length direction of the second bottom plate (422) as the y direction; the intervals between two adjacent groups of first support plate bodies (4231) are equal.

35. An amphibious boat as claimed in claim 34, wherein: the interval between two adjacent groups of first support plate bodies (4231) is filled with light materials.

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