A drag reduction and speed increase device for amphibious vehicles

Abstract

The present invention discloses a drag reduction and speed increase device for amphibious vehicles, belonging to the technical field of amphibious vehicles, and comprising: a high-pressure fan, a jet delivery pipeline, and one or more nozzle mechanism groups, wherein each nozzle mechanism group comprises one or more nozzle mechanisms distributed along the longitudinal direction of the vehicle body; the high-pressure fan is fixedly installed on the body of the amphibious vehicle; the nozzle mechanisms are respectively fixedly installed on each branch of the jet delivery pipeline, and are connected with the air outlet of the high-pressure fan through the jet delivery pipeline, and can spray airflow to the water surface. The drag reduction and speed increase device for amphibious vehicles can reduce the resistance peak of the amphibious vehicle sailing in the waterway, so that it can reach the water-skiing sailing state in advance.

Description

Technical Field

[0001] The invention relates to the technical field of amphibious vehicles, and in particular to a drag reducing and speed increasing device for amphibious vehicles. Background Art

[0002] With the development of science and technology and the changes in market demand, the popularization of amphibious vehicles, especially high-speed amphibious vehicles, has become an inevitable trend. High-speed amphibious vehicles should not only have the ability to maneuver off-road in complex land environments, but also need to sail at high speed on water.

[0003] For amphibious vehicles, their off-road mobility technology on land is relatively mature, but high-speed navigation technology on water is still a technical difficulty that needs to be overcome. According to relevant research, water resistance is the key factor restricting the high-speed navigation of amphibious vehicles on water. The process of amphibious vehicles achieving high-speed navigation on water is generally: the navigation state is gradually upgraded from the displacement type and transition type to the water skiing type, and then maintains the water skiing posture to navigate at high speed. At present, when the body lines of amphibious vehicles are relatively mature, the main ways to upgrade the vehicle to the water skiing type are to increase the engine power and increase the thrust of the water jet propulsion. However, these two methods require a larger installation space for the device, and will also significantly increase the weight of the amphibious vehicle. Summary of the invention

[0004] In view of this, the present invention provides a drag reduction and speed increase device for amphibious vehicles. The device mainly provides gas with adjustable pressure, direction and flow to a nozzle mechanism through a delivery pipeline from a high-pressure fan, and is installed as a whole at the bottom of the amphibious vehicle. It does not take up extra space and does not require additional increase in engine power and thrust of the water jet propulsion system, thus avoiding the problem of significantly increasing the weight of the amphibious vehicle.

[0005] The technical solution of the present invention is:

[0006] A drag reduction and speed increase device for an amphibious vehicle, comprising: a high-pressure blower, an air jet delivery pipeline, and more than one nozzle mechanism group, each of the nozzle mechanism groups comprising more than one nozzle mechanism distributed along the longitudinal direction of the vehicle body;

[0007] The high-pressure blower is fixedly mounted on the body of the amphibious vehicle;

[0008] The nozzle mechanisms are respectively fixedly mounted on the branches of the jet delivery pipeline, and are connected with the air outlet of the high-pressure blower through the jet delivery pipeline, so as to spray airflow toward the water surface.

[0009] Furthermore, it also includes guide plates corresponding one to one with the nozzle mechanism groups;

[0010] The guide plates include an outer guide plate and an inner guide plate;

[0011] The outer guide plate is fixedly mounted on the outer side of the corresponding nozzle mechanism group, and the inner guide plate is fixedly mounted on the inner side of the corresponding nozzle mechanism group.

[0012] Furthermore, two inner guide plates adjacent to the water suction port of the water jet propulsion device in the middle of the bottom of the vehicle body are bent outward at one end close to the rear of the amphibious vehicle.

[0013] Furthermore, the nozzle mechanism includes a nozzle, an elastic connector, a direction adjustment block, a hydraulic telescopic rod and a support frame;

[0014] The two ends of the nozzle are respectively fixedly connected to the rubber connector and one end of the direction adjustment block;

[0015] The other end of the elastic connector is fixedly mounted on the upper end surface of the air outlet provided at the bottom of the vehicle body;

[0016] The other end of the direction adjustment block is fixedly mounted on the outlet of the branch;

[0017] The telescopic end of the hydraulic telescopic rod is evenly fixedly installed on the outer peripheral side of the direction adjustment block, the fixed end is fixedly installed on one end of the support frame, and the other end of the support frame is fixedly installed on the bottom of the vehicle body;

[0018] The hydraulic telescopic rod is connected to the hydraulic control device of the amphibious vehicle by electrical signals.

[0019] Furthermore, each branch of the jet delivery pipeline is provided with a flow control valve;

[0020] The flow control valve is connected to the control system of the amphibious vehicle by electrical signals and is used to control the jet flow of the nozzle mechanism.

[0021] Furthermore, each branch of the jet delivery pipeline is provided with a one-way valve;

[0022] The one-way valve is used to ensure that the high-pressure gas flowing out of the air outlet of the high-pressure blower can only flow in the direction of the nozzle mechanism.

[0023] Furthermore, the nozzle mechanisms on both sides of the bottom of the vehicle body are linearly arranged along the length direction of the vehicle body.

[0024] Furthermore, the distance between the linearly arranged nozzle mechanisms gradually increases from the front of the amphibious vehicle to the rear of the amphibious vehicle.

[0025] Furthermore, the jet delivery pipeline is a flexible high-pressure composite delivery pipe.

[0026] Beneficial effects:

[0027] 1. The drag reduction and speed increase device for amphibious vehicles proposed in the present invention mainly provides gas with adjustable pressure, direction and flow rate to the nozzle mechanism through a delivery pipeline from a high-pressure fan, which can reduce the resistance peak of the amphibious vehicle when sailing in the waterway, so that it can reach the water skiing state in advance; moreover, the device is installed as a whole at the bottom of the amphibious vehicle, does not occupy extra space, and does not need to increase the power of the engine and the thrust of the water jet propulsion, thus solving the problem that the traditional method of making the amphibious vehicle enter the water skiing state will significantly increase the weight of the amphibious vehicle.

[0028] 2. The drag reduction and speed increase device for amphibious vehicles proposed in the present invention has guide plates fixedly installed on both sides of the inner and outer sides of the nozzle mechanism, so that the gas ejected from the nozzle mechanism is guided to both sides of the rear of the vehicle body and then discharged, avoiding the gas from entering the water suction port of the water jet propulsion device arranged in the middle of the bottom of the vehicle body, thereby reducing the water thrust flow rate, reducing the propulsion efficiency, and affecting the water speed.

[0029] 3. The drag reduction and speed increase device for amphibious vehicles proposed in the present invention has two ends of a nozzle in a nozzle mechanism fixedly connected to a direction adjustment block and one end of a rubber connector respectively, the other end of the rubber connector is fixedly mounted on an air outlet, the other end of the direction adjustment block is fixedly mounted on an outlet of an air jet delivery pipeline, and a plurality of hydraulic telescopic rods are evenly arranged on the outer peripheral side of the direction adjustment block. Under the control of the hydraulic device, the hydraulic telescopic rods can control the moving direction of the direction adjustment block, thereby causing the nozzle mechanism to spray airflows in different directions onto the water surface.

[0030] 4. The drag reduction and speed increase device for amphibious vehicles proposed by the present invention has flow control valves arranged on each branch of the jet pipeline, and the flow control valves are electrically connected to the control system of the amphibious vehicle to control the jet flow of the nozzle mechanism; at the same time, a one-way valve is arranged on each branch of the jet delivery pipeline, so that the high-pressure gas flowing out of the air outlet of the high-pressure blower can only flow in the direction of the nozzle mechanism, thereby preventing water from entering the interior of the amphibious vehicle along the jet delivery pipeline, thereby improving the safety of the amphibious vehicle's navigation on water.

[0031] 5. The drag reduction and speed increase device for amphibious vehicles proposed in the present invention has nozzle mechanisms arranged linearly along the length direction of the vehicle body, and the distance between the linearly arranged nozzle mechanisms gradually increases from the front of the amphibious vehicle to the rear of the amphibious vehicle, so that the front of the vehicle can generate a greater lifting force relative to the rear, thereby enabling the amphibious vehicle to maintain a certain tail-tilted navigation posture when gliding on the water, that is, the front is high and the tail is low, thereby reducing water resistance and increasing the navigation speed on the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is an overall structural diagram of the drag reducing and speed increasing device for amphibious vehicles proposed by the present invention.

[0033] Figure 2 The present invention is a side view of the drag reducing and speed increasing device for an amphibious vehicle.

[0034] Figure 3 This is a bottom schematic diagram of the drag reducing and speed increasing device for an amphibious vehicle proposed by the present invention.

[0035] Among them, 1-body, 2-nozzle mechanism, 3-base, 4-high-pressure fan, 5-jet delivery pipeline, 6-control system, 7-flow control valve, 8-check valve, 9-direction adjustment block, 10-nozzle, 11-hydraulic telescopic rod, 12-elastic connecting head, 13-support frame, 14-fixed seat, 15-guide plate, 16-outer guide plate, 17-air outlet, 18-inner guide plate. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0037] Embodiment 1:

[0038] The present embodiment provides a drag reduction and speed increase device for amphibious vehicles, which mainly consists of a high-pressure fan 4 providing gas with adjustable pressure, direction and flow to a nozzle mechanism 2 through a jet delivery pipeline 5, which can reduce the resistance peak of the amphibious vehicle when sailing in the waterway, so that it can reach the water skiing navigation state in advance; moreover, the device is installed as a whole at the bottom of the body 1 of the amphibious vehicle, does not occupy extra space, and does not need to increase the power of the engine and the thrust of the water jet propulsion, thereby solving the problem that the traditional method of making the amphibious vehicle enter the water skiing navigation state will significantly increase the weight of the amphibious vehicle.

[0039] like Figure 1 and Figure 2 As shown, the drag reduction and speed increase device for amphibious vehicles comprises: a high-pressure fan 4, an air jet delivery pipeline 5, and one or more nozzle mechanism groups, each nozzle mechanism group comprises one or more nozzle mechanisms 2 distributed along the longitudinal direction of the vehicle body (each nozzle mechanism group is distributed along the longitudinal direction of the vehicle body as a whole, but its parts can be of various shapes, for example: the nozzle mechanism group is composed of a plurality of nozzle mechanisms 2 arranged in a circle and distributed along the longitudinal direction of the vehicle body), wherein:

[0040] The high-pressure fan 4 is fixedly installed on the body 1 of the amphibious vehicle through the base 3; the nozzle mechanism 2 is respectively fixedly installed on each branch of the jet delivery pipeline 5, and is connected to the air outlet of the high-pressure fan 4 through the jet delivery pipeline 5, so as to spray air flow onto the water surface.

[0041] Embodiment 2:

[0042] Based on the above embodiment 1, Figure 1 , Figure 2 and Figure 3 The drag reduction and speed increasing device for amphibious vehicles also includes a guide plate 15 corresponding to the nozzle mechanism group one by one, and the guide plate 15 includes an outer guide plate 16 and an inner guide plate 18. The outer guide plate 16 is fixedly installed on the outer side of the corresponding nozzle mechanism group (the side away from the longitudinal center line of the amphibious vehicle), and the inner guide plate 18 is fixedly installed on the inner side of the corresponding nozzle mechanism group (the side close to the longitudinal center line of the amphibious vehicle). Moreover, the two inner guide plates 18 adjacent to the water suction port of the water jet propulsion device in the middle of the bottom of the vehicle body should be bent outward at one end close to the tail of the amphibious vehicle to separate the water suction port of the water jet propulsion device.

[0043] More specifically, in this embodiment, if Figure 1 and Figure 3 As shown, two nozzle mechanism groups are provided, and the corresponding outer guide plate 16 is a straight plate, and one end of the inner guide plate 18 close to the rear of the amphibious vehicle is bent toward the outer guide plate 16 .

[0044] It can be seen that the guide plates 15 are fixedly installed on both the inner and outer sides of the nozzle mechanism 2, so that the gas ejected from the nozzle mechanism 2 is guided to both sides of the rear of the vehicle body 1 and then discharged, avoiding the gas from entering the water suction port of the water jet propulsion device arranged in the middle of the rear of the vehicle body 1, thereby reducing the water propulsion flow rate, reducing the propulsion efficiency, and affecting the speed on the water. In addition, the guide plate 15 can also limit the bubbles to the bottom of the vehicle body 1, thereby increasing the lift of the vehicle body 1 and reducing the water resistance of the vehicle.

[0045] In this embodiment, Figure 2 As shown, the nozzle mechanism 2 includes a nozzle 10, an elastic connector 12, a direction adjustment block 9, a plurality of hydraulic telescopic rods 11 and a support frame 13, wherein:

[0046] The two ends of the nozzle 10 (a metal nozzle is selected in this embodiment) are fixedly connected to the elastic connector 12 and one end of the direction adjustment block 9 respectively; the other end of the elastic connector 12 is fixedly mounted on the upper end surface of the air outlet 17 arranged at the bottom of the amphibious vehicle; the other end of the direction adjustment block 9 is fixedly mounted on the outlets of each branch of the jet delivery pipeline 5; the telescopic ends of multiple hydraulic telescopic rods 11 are evenly fixedly mounted on the outer peripheral side of the direction adjustment block 9, and the fixed ends are fixedly mounted on one end of the support frame 13, and the other end of the support frame 13 is fixedly mounted on the bottom of the amphibious vehicle through the fixing seat 14; the hydraulic telescopic rod 11 is electrically signal-connected to the hydraulic control device (not shown in the figure) of the amphibious vehicle.

[0047] In the configuration of the above-mentioned nozzle mechanism 2, the elastic connector 12 is selected as a rubber connector, and one end of the rubber connector is fixedly connected to the nozzle 10, and the other end is fixedly connected to the upper end surface of the air outlet 17, thereby realizing a fully sealed state of the entire conveying path of the high-pressure airflow from the air outlet of the high-pressure fan 4 to the air outlet 17; moreover, under the control of the hydraulic control device, the hydraulic telescopic rod 11 can control the movement of the direction adjustment block 9, so that each nozzle mechanism 2 can spray airflow in different directions toward the water surface, thereby assisting the vehicle body 1 in turning, moving forward, and reversing, and improving the vehicle's maneuverability on water (for example, when the vehicle body 1 turns on the water, the direction of the nozzle 10 is adjusted to the opposite side of the rotation direction, generating a reaction force to assist the turning; similarly, when the vehicle body 1 moves forward, the nozzle 10 is directed backward, and when reversing, the nozzle 10 is directed forward).

[0048] In this embodiment, Figure 2 As shown, each branch of the jet delivery pipeline 5 is provided with a flow control valve 7, and the flow control valve 7 is electrically connected to the control system 6 of the amphibious vehicle, so that the function of controlling the jet flow of the nozzle mechanism 2 is realized through the control system 6 and the flow control valve 7.

[0049] The control system 6 for controlling the flow control valve 7 may be integrated in the high-pressure blower. Of course, the control system of the entire vehicle may also be used to control the flow control valve 7 .

[0050] Each branch of the jet delivery pipeline 5 is also provided with a one-way valve 8, which allows the high-pressure gas flowing out of the air outlet of the high-pressure blower 4 to flow only in the direction of the nozzle mechanism 2, thereby preventing water from entering the interior of the amphibious vehicle along the jet delivery pipeline 5, thereby improving the safety of the amphibious vehicle's navigation on water.

[0051] Reference Figure 1 , Figure 2 and Figure 3 The nozzle mechanisms 2 on both sides of the bottom of the amphibious vehicle are linearly arranged along the length direction of the vehicle body 1. This arrangement can apply lift to the vehicle body 1 in the entire length direction. Moreover, the distance between the linearly arranged nozzle mechanisms 2 gradually increases from the front of the amphibious vehicle to the rear of the amphibious vehicle, so that the front of the vehicle can generate a greater lifting force relative to the rear, thereby enabling the amphibious vehicle to maintain a certain tail-tilted navigation posture when gliding on the water, that is, the front is high and the tail is low, thereby reducing water resistance and increasing the navigation speed on the water.

[0052] It is worth noting that the above-mentioned jet delivery pipeline 5 is a flexible high-pressure composite delivery pipe, so that the nozzle 10 connected to the delivery jet pipeline 5 can change direction under the drive of the direction adjustment block 9; the pressure provided by the above-mentioned high-pressure fan 4 can be flexibly set according to the specific specifications of the amphibious vehicle. In this embodiment, the maximum pressure that the high-pressure fan 4 can provide is 0.8MPa. Under the control of the control system 6, the pressure provided by the high-pressure fan can vary between 0 and 0.8Mpa.

[0053] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drag reduction and speed increase device for an amphibious vehicle, characterized in that: include: A high-pressure fan, an air jet delivery pipeline and one or more nozzle mechanism groups, each of which includes one or more nozzle mechanisms distributed along the longitudinal direction of the vehicle body; The high-pressure blower is fixedly mounted on the body of the amphibious vehicle; The nozzle mechanism is fixedly installed on each branch of the jet delivery pipeline, and is connected to the air outlet of the high-pressure blower through the jet delivery pipeline, so as to spray air flow toward the water surface; Also included are guide plates corresponding one to one with the nozzle mechanism groups; The guide plates include an outer guide plate and an inner guide plate; The outer guide plate is fixedly mounted on the outer side of the corresponding nozzle mechanism group, and the inner guide plate is fixedly mounted on the inner side of the corresponding nozzle mechanism group; The two inner guide plates adjacent to the water suction port of the water jet propulsion device in the middle of the bottom of the vehicle body are bent outward at one end close to the rear of the amphibious vehicle.

2. The drag reducing and speed increasing device for an amphibious vehicle according to claim 1, characterized in that: The nozzle mechanism comprises a nozzle, an elastic connector, a direction adjustment block, a hydraulic telescopic rod and a support frame; The two ends of the nozzle are respectively and fixedly connected to the elastic connector and one end of the direction adjustment block; The other end of the elastic connector is fixedly mounted on the upper end surface of the air outlet provided at the bottom of the vehicle body; The other end of the direction adjustment block is fixedly mounted on the outlet of the branch; The telescopic end of the hydraulic telescopic rod is evenly fixedly installed on the outer peripheral side of the direction adjustment block, the fixed end is fixedly installed on one end of the support frame, and the other end of the support frame is fixedly installed on the bottom of the vehicle body; The hydraulic telescopic rod is connected to the hydraulic control device of the amphibious vehicle by electrical signals.

3. The drag reducing and speed increasing device for an amphibious vehicle according to claim 1, characterized in that: Each branch of the jet delivery pipeline is provided with a flow control valve; The flow control valve is connected to the control system of the amphibious vehicle by electrical signals and is used to control the jet flow of the nozzle mechanism.

4. The drag reducing and speed increasing device for an amphibious vehicle according to claim 1, characterized in that: Each branch of the jet delivery pipeline is provided with a one-way valve; The one-way valve is used to ensure that the high-pressure gas flowing out of the air outlet of the high-pressure blower can only flow in the direction of the nozzle mechanism.

5. The drag reducing and speed increasing device for an amphibious vehicle according to claim 1, characterized in that: The nozzle mechanisms on both sides of the bottom of the vehicle body are linearly arranged along the length direction of the vehicle body.

6. The drag reducing and speed increasing device for an amphibious vehicle according to claim 5, characterized in that: The distance between the linearly arranged nozzle mechanisms gradually increases from the front of the amphibious vehicle to the rear of the amphibious vehicle.

7. The drag reducing and speed increasing device for an amphibious vehicle according to any one of claims 1 to 6, characterized in that: The jet delivery pipeline is a flexible high-pressure composite delivery pipe.

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