A high-speed amphibious vehicle that can reduce wave-making resistance

Abstract

The present invention discloses a water-land high-speed amphibious vehicle capable of reducing wave-making resistance, which comprises a main body. The main body includes a left vehicle body, a right vehicle body, a main vehicle body and a freeboard part. Both the left vehicle body and the right vehicle body are provided with land moving devices, and the main vehicle body is provided with a land power device and a water driving device. The left vehicle body and the right vehicle body are symmetrically arranged on the left and right sides of the main vehicle body with respect to the longitudinal central axis of the main vehicle body. The freeboard part is arranged on the tops of the left vehicle body, the right vehicle body and the main vehicle body, and a left flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the left vehicle body and the main vehicle body, and a right flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the right vehicle body and the main vehicle body. The left flow channel and the right flow channel are symmetric with respect to the longitudinal central axis of the main vehicle body. The water-land high-speed amphibious vehicle can confine the water spray in the left and right flow channels on both sides, effectively reducing the wave-making resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of amphibious vehicles, and particularly relates to a high-speed amphibious vehicle that can reduce wave-making resistance. Background Art

[0002] Amphibious vehicles have very wide applications in both military and civilian fields. Currently, the design concepts of amphibious vehicles in China are mainly divided into two categories. One is light amphibious vehicles, which mainly use wheeled action systems as carriers, and common wheeled drive forms include 4x4, 6x6, 8x8, etc. The overall vehicle weight is usually not more than 10 tons. When driving on water, a liftable suspension device is usually used to raise and retract each wheel. At the same time, due to the light weight of the vehicle, the retracted wheel system does not directly contact the water, and the whole vehicle uses the hull configuration at the bottom of the vehicle to reduce resistance on water and achieve high-speed driving. The other is heavy amphibious vehicles, which mainly adopt the form of double skids at the head and tail. When driving on water, the head and tail skids are deployed, and the flat plate sliding principle is used to increase the flat plate area to increase the dynamic lift force received by the whole vehicle.

[0003] For amphibious vehicles, the on-land cross-country mobility technology is relatively mature, and the driving speed on land is very high. However, the high-speed driving technology on water is a technical difficulty that high-speed amphibious vehicles need to break through. Water resistance is precisely the key factor restricting the high-speed driving of amphibious vehicles on water, and the magnitude of the vehicle's water resistance is closely related to the hull design of amphibious vehicles. The above two types of amphibious vehicles have no special resistance reduction structure, resulting in large water driving resistance and low sailing speed. Summary of the Invention

[0004] In view of this, the present invention provides a high-speed amphibious vehicle that can reduce wave-making resistance. The main body of the high-speed amphibious vehicle includes a left vehicle body, a right vehicle body, a main vehicle body, and a freeboard part, and two symmetrical flow channels are provided at the bottom of the main body to reduce the wave-making resistance during water driving, so that the high-speed amphibious vehicle meets the use requirements of high water sailing speed.

[0005] The present invention adopts the following technical solutions:

[0006] A high-speed amphibious vehicle that can reduce wave-making resistance, the high-speed amphibious vehicle includes a main body, and the main body includes a left vehicle body, a right vehicle body, a main vehicle body, and a freeboard part;

[0007] The left vehicle body and the right vehicle body are both provided with on-land action devices, and the main vehicle body is provided with an on-land power device and a water driving device;

[0008] The left vehicle body and the right vehicle body are symmetrically arranged on the left and right sides of the main vehicle body with respect to the longitudinal central axis of the main vehicle body. The freeboard part is arranged on the tops of the left vehicle body, the right vehicle body and the main vehicle body, and a left flow channel is formed between the left vehicle body and the main vehicle body for the water travel of the amphibious high-speed vehicle, and a right flow channel is formed between the right vehicle body and the main vehicle body for the water travel of the amphibious high-speed vehicle;

[0009] The left flow channel and the right flow channel are symmetric with respect to the longitudinal central axis of the main vehicle body.

[0010] Further, the depths of the left flow channel and the right flow channel gradually decrease from the head of the main body part to the tail of the main body part.

[0011] Further, the depth of the left flow channel and the right flow channel at any cross-section accounts for 1 / 3 - 1 / 2 of the height of the main body part at the corresponding cross-section.

[0012] Further, the left flow channel and the right flow channel extend from the head of the main body part to the tail of the main body part.

[0013] Further, the head of the main body part is in the shape of a ship's bow, and the main body part is in a streamline shape that is narrow at the front and wide at the back from the head to the tail.

[0014] Further, the land operation device includes a track cabin and tracks and a track retracting and extending mechanism arranged in the track cabin;

[0015] The track cabin is formed by inward depressions below the left vehicle body and the right vehicle body;

[0016] When the amphibious high-speed vehicle travels on land, the track retracting and extending mechanism lowers the tracks to contact the ground; when the amphibious high-speed vehicle travels on water, the track retracting and extending mechanism retracts the tracks into the track cabin.

[0017] Further, the amphibious high-speed vehicle further includes an appendage part;

[0018] The appendage part includes a track cabin covering mechanism, and the track cabin covering mechanism can seal the track cabin when the amphibious high-speed vehicle travels on water.

[0019] Further, the track cabin covering mechanism includes a front covering plate, a bottom covering plate, a tail covering plate and side skirt plates;

[0020] The front covering plate is rotatably arranged obliquely at the front end of the bottom of the track cabin, and after the track cabin is sealed, the connection between the main body part and the front covering plate is in a streamline shape;

[0021] The bottom cladding plate is horizontally rotatably arranged at the bottom of the track compartment and jointly seals the bottom of the track compartment with the front cladding plate;

[0022] The tail cladding plate is rotatably arranged at the tail of the track compartment and is used to seal the tail of the track compartment;

[0023] The side skirt plate is fixedly arranged on the side of the track compartment and is used to seal the side of the track compartment.

[0024] Furthermore, the appendage part further includes a tail slide plate rotatably arranged at the lower end of the tail of the main body part;

[0025] The top surface of the tail slide plate is a streamline-shaped curved surface and the bottom surface is a plane.

[0026] Furthermore, the left vehicle body, the right vehicle body, the main vehicle body and the freeboard part are all composed of an internal frame and an external skin.

[0027] Beneficial effects:

[0028] 1. The left vehicle body and the right vehicle body of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to the present invention are symmetrically arranged on the left and right sides of the bottom of the main vehicle body with respect to the longitudinal central axis of the main body part, and a left flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the left vehicle body and the main vehicle body under the left side of the main vehicle body, and a right flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the right vehicle body and the main vehicle body under the right side of the main vehicle body, and the left flow channel and the right flow channel are symmetric with respect to the longitudinal central axis of the main vehicle body. This can most effectively confine the water spray discharged by the water-land high-speed amphibious vehicle when traveling on water within the left and right flow channels on both sides, avoid the situation of a large amount of spray splashing, effectively suppress the amplitude of the wave-making at the oblique rear of the water-land high-speed amphibious vehicle, reduce the wave-making resistance, and increase the speed when traveling on water.

[0029] In addition, the two symmetric left and right flow channels at the bottom of the water-land high-speed amphibious vehicle can divide the bottom water flow of the water-land high-speed amphibious vehicle into two equal water flows, balance the lateral unstable forces (such as the lateral swing force caused by minute spray, etc.) received by the water-land high-speed amphibious vehicle, and enable the water-land high-speed amphibious vehicle to have higher stability when traveling on water.

[0030] 2. The depths of the left and right flow channels at the bottom of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to the present invention gradually decrease from the head of the main body part to the tail of the main body part. This enables the water-land high-speed amphibious vehicle to obtain a certain lifting angle at the vehicle head relative to the vehicle tail when traveling on water, ensures that the water-land high-speed amphibious vehicle is in a hydroplaning state when traveling on water, and further enables the water-land high-speed amphibious vehicle to have a higher speed when traveling on water.

[0031] 3. The depth of the left flow channel and the right flow channel of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance of the present invention at any cross-section accounts for 1 / 3 to 1 / 2 of the height of the main body at the corresponding cross-section. In this structure, the water-land high-speed amphibious vehicle can not only maintain the hydroplaning type but also does not affect the installation and layout of the land operation device on the left and right bodies of the water-land high-speed amphibious vehicle.

[0032] 4. The left flow channel and the right flow channel at the bottom of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance of the present invention extend from the head of the main body to the tail of the main body, so that the waves displaced by the water-land high-speed amphibious vehicle are constrained in the entire length direction of the water-land high-speed amphibious vehicle. This can more effectively suppress the amplitude of the wave-making behind the water-land high-speed amphibious vehicle obliquely, reduce the wave-making resistance, and thus increase the speed of the water-land high-speed amphibious vehicle when traveling on water.

[0033] 5. The main body of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance of the present invention is in a streamlined shape with a narrow front and a wide rear, which can avoid the "square" non-streamlined structure of traditional tracked amphibious vehicles, reduce the frictional resistance when the water-land high-speed amphibious vehicle travels on water, and combined with the left flow channel and the right flow channel at the bottom of the water-land high-speed amphibious vehicle, can further reduce the resistance suffered by the water-land high-speed amphibious vehicle when traveling on water, making it easier for the water-land high-speed amphibious vehicle to obtain the highest traveling speed when traveling on water. Moreover, the head of the main body is in the configuration of a ship's bow, which can reduce the contact area between the water-land high-speed amphibious vehicle and the water surface and the air when traveling on water, further reduce the resistance, and increase the speed.

[0034] 6. The track cabin covering mechanism composed of the front covering plate, the bottom covering plate, the rear covering plate and the side skirt plate of the water-land high-speed amphibious vehicle capable of reducing wave-making resistance of the present invention can seal the track cabin, avoiding the problem that when the water-land high-speed amphibious vehicle travels on water, due to the contact between the non-streamlined structures such as the track cabin and the four wheels and one plate and the water flow, the shape resistance and the splash resistance are relatively large during driving; and after the track cabin is sealed, the overall shape formed by the entire track cabin and the track cabin covering mechanism and the main body is in a streamlined configuration, keeping the outer shape of the entire water-land high-speed amphibious vehicle streamlined, which further improves the performance of the water-land high-speed amphibious vehicle when traveling at high speed on water.

[0035] 7. The left body, the right body and the connecting body of the high-speed amphibious vehicle capable of reducing wave-making resistance of the present invention are all composed of an internal skeleton and an external skin, which enables the flexible and reasonable setting of the frame, not only meeting the support requirements and strength requirements for the key parts of the water-land high-speed amphibious vehicle, but also meeting the installation and positioning requirements for the internal components of the vehicle body. At the same time, under the premise of ensuring the vehicle body function requirements, the weight of the water-land high-speed amphibious vehicle is reduced, thereby further increasing the speed of the water-land high-speed amphibious vehicle when traveling on water. Description of the Drawings

[0036] Figure 1 Schematic diagram of the streamlined body of a water-land high-speed amphibious vehicle provided for Example 1;

[0037] Figure 2 Front view of a water-land high-speed amphibious vehicle provided for Example 1;

[0038] Figure 3 Bottom schematic diagram of a water-land high-speed amphibious vehicle provided for Example 1;

[0039] Figure 4 Schematic diagram of the state of a water-land high-speed amphibious vehicle when traveling on water provided for Example 2;

[0040] Figure 5 Schematic diagram of the state of a water-land high-speed amphibious vehicle when traveling on land provided for Example 2;

[0041] Figure 6 Schematic diagram of the body frame structure of a water-land high-speed amphibious vehicle provided for Example 3;

[0042] Wherein, 1 - left body, 2 - right body, 3 - main body, 4 - freeboard part, 5 - left flow channel, 6 - right flow channel, 7 - front cladding plate, 8 - bottom cladding plate, 9 - tail cladding plate, 10 - side skirt plate, 11 - tail skid plate. Detailed implementation manners

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and by way of examples.

[0044] The present invention is based on the following principle: The water travel of an amphibious vehicle is divided into three states: displacement type, transitional type, and planing type. When the amphibious vehicle needs to transition to and develop towards ultra-high speed on water, it is necessary to prompt the amphibious vehicle to achieve a planing type of travel state. At this time, the composition of the water travel resistance of the amphibious vehicle is mainly wave-making resistance, followed by frictional resistance. Moreover, at this time, the gravity of the amphibious vehicle is no longer completely balanced by the buoyancy of water, but more than 90% of the gravity of the amphibious vehicle is balanced by the dynamic lift force received by the amphibious vehicle. Therefore, in order to further reduce the water travel resistance of the amphibious vehicle, the following two measures can be taken: (1) reducing wave-making resistance and frictional resistance; (2) increasing the lift force received by the amphibious vehicle. The present invention designs a water-land high-speed amphibious vehicle that can reduce wave-making resistance based on the above measure (1).

[0045] Example 1:

[0046] As Figures 1 to 3 shown, the main body of the water-land high-speed amphibious vehicle includes a left body 1, a right body 2, a main body 3, and a freeboard part 4, wherein:

[0047] Both the left vehicle body 1 and the right vehicle body 2 are provided with land moving devices, and the main vehicle body 3 is provided with a land power device, a transmission device, a water driving device, etc.; the left vehicle body 1 and the right vehicle body 2 are symmetrically arranged on the left and right sides of the main vehicle body 3 with respect to the longitudinal central axis of the main body part, and the freeboard part 4 is arranged on the tops of the left vehicle body 1, the right vehicle body 2 and the main vehicle body 3, and a left flow channel 5 for the water travel of the water-land high-speed amphibious vehicle is formed between the left vehicle body 1 and the main vehicle body 3, and a right flow channel 6 for the water travel of the water-land high-speed amphibious vehicle is formed between the right vehicle body 2 and the main vehicle body 3, and the left flow channel 5 and the right flow channel 6 are symmetric with respect to the longitudinal central axis of the water-land high-speed amphibious vehicle (the longitudinal central axis of the water-land high-speed amphibious vehicle is the longitudinal central axis of the main vehicle body 3).

[0048] It should be noted that Figure 1 only schematically shows the streamline body shape of the water-land high-speed amphibious vehicle, and the above-mentioned left vehicle body 1, right vehicle body 2, main vehicle body 3 and freeboard part 4 are not directly shown in Figure 1 it. Figure 2 And Figure 3 further schematically shows the structure of the water-land high-speed amphibious vehicle more specifically from different angles.

[0049] The specific principle for the water-land high-speed amphibious vehicle to increase the water travel speed is: the left flow channel 5 and the right flow channel 6 are symmetric with respect to the longitudinal central axis of the main vehicle body 3, which can confine the water spray discharged by the vehicle within the left flow channel 5 and the right flow channel 6 to the greatest extent when the water-land high-speed amphibious vehicle is traveling on water, avoiding a large amount of spray splashing, thereby effectively suppressing the amplitude of the wave generated obliquely behind the water-land high-speed amphibious vehicle, reducing the wave-making resistance, and thus increasing the speed.

[0050] In addition, the two symmetric left flow channels 5 and right flow channels 6 at the bottom of the main body part (i.e., the vehicle bottom) of the water-land high-speed amphibious vehicle can divide the water flow at the bottom of the amphibious vehicle into two equal water flows, balancing the lateral instability forces (such as the lateral swing force caused by tiny spray, etc.) received by the amphibious vehicle, so that the water-land high-speed amphibious vehicle has higher water travel stability.

[0051] As an improvement, as Figure 1 And Figure 3 shown, the main body part of the water-land high-speed amphibious vehicle is in a streamline shape that is narrow in the front and wide in the rear. Specifically, the water-land high-speed amphibious vehicle as a whole is in a long strip shape that is narrow in the front and wide in the rear. In this way, the non-streamline structure of the traditional amphibious vehicle like "square and regular" can be avoided, the frictional resistance during the water travel of the water-land high-speed amphibious vehicle can be reduced, and the water travel speed of the water-land high-speed amphibious vehicle can be increased.

[0052] In addition, the bow of the main body of the high-speed amphibious vehicle (that is, the bow of the high-speed amphibious vehicle) is a curved and upturned bow configuration, which reduces the contact area between the bow and the water surface when the high-speed amphibious vehicle is traveling on water, thereby increasing the water speed of the high-speed amphibious vehicle.

[0053] As a further improvement, the left flow channel 5 and the right flow channel 6 extend from the head of the main body to the tail of the main body (i.e., the tail of the amphibious vehicle), so that the waves displaced by the amphibious vehicle when traveling on water are constrained in the entire length direction of the amphibious vehicle, which can more effectively suppress the amplitude of the waves made at the rear of the amphibious vehicle and reduce the wave-making resistance. Moreover, it can be seen that the depth of the left flow channel 5 and the right flow channel 6 gradually decreases from the front end of the amphibious vehicle to the rear of the amphibious vehicle, so that the front of the amphibious vehicle can obtain a certain lifting angle when traveling on water, ensuring that the amphibious vehicle is in a water-skiing state when traveling on water. More specifically, the depth of the left flow channel 5 and the right flow channel 6 at any cross section accounts for 1 / 3 to 1 / 2 of the height of the main body at the corresponding cross section (the structure shown in the figure is only a schematic representation and cannot reflect the dimensional ratio of the depth). Under this structure, the high-speed amphibious vehicle can maintain the water skiing type without affecting the installation arrangement of the land-based motion devices on the left and right bodies of the high-speed amphibious vehicle.

[0054] Embodiment 2:

[0055] On the basis of the above-mentioned first embodiment, this embodiment provides a high-speed amphibious vehicle, in which a land moving device includes a track cabin, tracks arranged in the track cabin, and a track retracting and extending mechanism.

[0056] like Figure 4 As shown, the track cabin is formed by the inward depression below the left vehicle body 1 and the right vehicle body 2, and the left flow channel 5 and the right flow channel 6 extend from the front of the vehicle to the rear of the vehicle, and extend to the position close to the rear of the amphibious high-speed vehicle to install the water propeller, so that the installation of the water propeller can be facilitated, which is different from the design in the first embodiment that the left flow channel 5 and the right flow channel 6 extend from the front of the vehicle to the rear of the vehicle. However, the more important thing of this embodiment is to provide a high-speed amphibious vehicle with a land-based motion device including a track cabin and a track and a track retracting and extending mechanism arranged in the track cabin. The land-based motion device is applicable to both the extension form of the left flow channel 5 and the right flow channel 6 in the first embodiment and the extension form of the left flow channel 5 and the right flow channel 6 in this embodiment.

[0057] Specifically, Figure 4 As shown, when the high-speed amphibious vehicle is traveling on water, the track retracting and extending mechanism retracts the track to the corresponding side track compartment; Figure 5As shown, when the amphibious vehicle travels on land, the track retracting and deploying mechanism lowers the tracks and brings them into contact with the ground.

[0058] Moreover, in addition to the main body, this high-speed amphibious vehicle also includes appendage parts. The appendage parts include track cabin covering mechanisms symmetrically arranged on the left and right vehicle bodies. The track cabin covering mechanism can seal the track cabin when the amphibious vehicle travels on water. After the track cabin is sealed, the overall shape formed by the entire track cabin, the track cabin sealing structure, and the main body is streamlined, keeping the overall shape of the high-speed amphibious vehicle streamlined. Specifically, as Figure 4 shown, the track cabin covering mechanism includes a front covering plate 7, a bottom covering plate 8, a rear covering plate 9, and side skirt plates 10. Taking the track cabin covering mechanism arranged on the left vehicle body 1 as an example, its connection relationship will be introduced in detail: The front covering plate 7 is connected to the left vehicle body 1 of this high-speed amphibious vehicle through a movable hinge (specifically located at the front end of the bottom of the track cabin), and realizes the opening and closing of the track cabin by rotating around the axis of the movable hinge from 0° to 180° under the drive of a swing hydraulic cylinder. It can be seen that the front covering plate 7 is rotatably arranged at an inclination (i.e., installed on the main body at a certain inclination angle) at the front end of the bottom of the track cabin, and after the track cabin is sealed, the connection between the main body and the front covering plate 5 is streamlined; the bottom covering plate 8 is connected to the bottom of the left vehicle body 1 through six movable hinges, and a swing hydraulic cylinder is designed at a position near the rear of the left vehicle body 1 to realize the rotation of the bottom covering plate 8 around the axis of the movable hinge from 0° to 180°. It can be seen that the bottom covering plate 8 is horizontally rotatably arranged at the bottom of the track cabin (flush with the bottom of the left and right vehicle bodies), and jointly seals the bottom of the track cabin with the front covering plate 7; the rear covering plate 9 is connected to the rear of the left vehicle body 1 (flush with the rear of the left and right vehicle bodies) through two movable hinges, and realizes the rotation of the rear covering plate 9 around the axis of the movable hinge from 0° to 180° through a swing hydraulic cylinder, for sealing the rear of the track cabin; the side skirt plates 10 are fixedly arranged on the side of the track cabin (flush with the side of the main body), for sealing the side of the track cabin.

[0059] Furthermore, in this embodiment, the appendage also includes a tail skid plate 11 arranged at the rear of the amphibious high-speed water and land vehicle, the top surface of the tail skid plate 11 is a streamlined curved surface (convex arc curved surface), and the bottom surface is a plane, so that a water flow velocity difference and a pressure difference can be formed between the top surface and the bottom surface of the tail skid plate 11, so that an upward dynamic lift can be generated for the amphibious high-speed water and land vehicle when traveling on water, and this upward dynamic lift helps to lift the rear of the whole vehicle relative to the water surface, reduce the immersion depth of the amphibious high-speed water and land vehicle, and thus greatly reduce the resistance. At the same time, because the tail skid plate 11 is connected to the rear of the main body through a pin shaft and a telescopic oil cylinder, it can achieve -10° to 90° rotation (of course, it can also be set to other angle ranges), so according to the speed, by controlling the inclination angle of the tail skid plate 11, an appropriate dynamic lift can be generated to control the dynamic lift of the rear of the whole vehicle, so as to achieve the purpose of controlling the longitudinal inclination angle of the whole vehicle on water.

[0060] Embodiment three:

[0061] Based on the above second embodiment, this embodiment provides a lightweight vehicle body structure.

[0062] like Figure 6 As shown, the left body 1, the right body 2, the main body 3 and the topside 4 are all composed of an internal frame and an external skin, wherein the internal frame is as shown in FIG. Figure 6 As shown, it is made of hollow tubes with a cross-section of 50mm×50mm fixedly connected, the skin is made of 5mm thick plate, and the frame and skin are both made of aluminum alloy. In this way, the use of lightweight materials and structural parts can reduce the weight of amphibious vehicles while ensuring the structural strength of the entire vehicle, thereby reducing the draft of amphibious vehicles to reduce water driving resistance.

[0063] Specifically, the skeleton between the main body 3 and the left and right bodies is connected by an arc-shaped transition skeleton (the skeleton between the main body and the left and right bodies for forming the left flow channel 5 or the right flow channel 6 is an arc-shaped transition skeleton); the top of the freeboard 4 is provided with a top hatch opening and a power compartment opening; in addition, the skeletons of the left and right bodies are composed of a plurality of vertical ribs and longitudinal beams, the vertical ribs and the longitudinal beams are perpendicular to each other, and the vertical ribs are distributed according to the body linear station of the amphibious vehicle, and the longitudinal beams are arranged from the front to the rear of the vehicle. Through the reasonable setting of the skeleton, it is possible to ensure the support and strength requirements of key parts, and meet the installation positioning of the internal components of the amphibious vehicle body, and reasonably optimize the weight reduction under the premise of ensuring the functional requirements of the amphibious vehicle. In addition, the body of the amphibious vehicle is in a long strip shape, which increases the slenderness ratio of the amphibious vehicle, can reduce the wave-making resistance of the amphibious vehicle, and is suitable for the higher speed requirements of the amphibious vehicle on water.

[0064] Sample tests have verified that the maximum water speed of the two types of amphibious vehicles can reach 50-55km / h.

[0065] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-speed amphibious vehicle that can reduce wave-making resistance, characterized in that, The water-land high-speed amphibious vehicle includes a main body, and the main body includes a left vehicle body, a right vehicle body, a main vehicle body, and a freeboard part; Both the left vehicle body and the right vehicle body are provided with land moving devices, and the main vehicle body is provided with a land power device and a water driving device; The left vehicle body and the right vehicle body are symmetrically arranged on the left and right sides of the main vehicle body with respect to the longitudinal central axis of the main vehicle body. The freeboard part is arranged on the tops of the left vehicle body, the right vehicle body, and the main vehicle body, and a left flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the left vehicle body and the main vehicle body, and a right flow channel for the water-land high-speed amphibious vehicle to travel on water is formed between the right vehicle body and the main vehicle body; The left flow channel and the right flow channel are symmetrical with respect to the longitudinal central axis of the main vehicle body; The depths of the left flow channel and the right flow channel gradually decrease from the head of the main body to the tail of the main body; The head of the main body is in a bow configuration, and the main body is in a streamlined shape that is narrow in the front and wide in the back from the head to the tail; The land moving device includes a track cabin and tracks and a track retracting and extending mechanism arranged in the track cabin; The track cabin is formed by inward depressions under the left vehicle body and the right vehicle body; When the water-land high-speed amphibious vehicle travels on land, the track retracting and extending mechanism lowers the tracks to contact the ground; when the water-land high-speed amphibious vehicle travels on water, the track retracting and extending mechanism retracts the tracks into the track cabin.

2. The water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to claim 1, characterized in that, The depth of the left flow channel and the right flow channel at any cross-section accounts for 1 / 3 to 1 / 2 of the height of the main body at the corresponding cross-section.

3. A water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to claim 1, characterized in that, The left flow channel and the right flow channel extend from the head of the main body to the tail of the main body.

4. The water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to claim 1, characterized in that, It further includes an appendage part; The appendage part includes a track cabin covering mechanism, and the track cabin covering mechanism can seal the track cabin when the water-land high-speed amphibious vehicle travels on water.

5. The water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to claim 4, wherein, The track cabin covering mechanism includes a front covering plate, a bottom covering plate, a tail covering plate, and side skirt plates; The front covering plate is rotatably arranged obliquely at the front end of the bottom of the track cabin, and after the track cabin is sealed, the connection between the main body and the front covering plate is in a streamlined shape; The bottom covering plate is rotatably arranged horizontally at the bottom of the track cabin and jointly seals the bottom of the track cabin with the front covering plate; The tail covering plate is rotatably arranged at the tail of the track cabin to seal the tail of the track cabin; The side skirt plates are fixedly arranged on the sides of the track cabin to seal the sides of the track cabin.

6. The high-speed amphibious vehicle capable of reducing wave-making resistance according to claim 5, characterized in that, The appendage part further includes a tail slide plate rotatably arranged at the lower end of the tail of the main body; The top surface of the tail slide plate is a streamlined curved surface, and the bottom surface is a plane.

7. A water-land high-speed amphibious vehicle capable of reducing wave-making resistance according to any one of claims 4-6, characterized in that The left vehicle body, the right vehicle body, the main vehicle body, and the freeboard part are all composed of an internal frame and an external skin.

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