A water jet propulsion device and a double-surface watercraft

Abstract

The present invention discloses a water jet propulsion device, comprising a main body and a water jet device arranged in the main body, the main body having a plurality of water inlets and a water outlet, the plurality of water inlets being distributed on two water contacting surfaces, a central axis being arranged at the axial center of the main body, the central axis being connected with a water inlet cover rotatable around the central axis, the water inlet cover being connected with a driving device, the water inlet cover being driven by the driving device to rotate around the central axis so that the water inlet cover is always covering the water inlet located above the water surface; many improvements are made in the structure of the water inlet spray pump, under the action of gravity or driving force, the water inlet cover rotatable around the central axis can ensure that the water inlet on the water surface is closed, while the water inlet under the water surface is opened; a double-sided water vehicle is also disclosed; only the water inlet below the water surface is opened, so as to avoid air from entering from the water inlet on the water surface, thereby greatly improving the pump spraying efficiency, and improving the speed and stability of the double-sided water unmanned vehicle.

Description

Technical Field

[0001] The present invention relates to the field of watercraft, and in particular to a water jet propulsion device and a double-surface watercraft. Background Art

[0002] In recent years, natural disasters have occurred frequently, and people have put forward higher requirements for the level of water rescue or investigation. Under harsh natural conditions, achieving efficient and strong wind and wave resistant water unmanned aerial vehicle rescue is still an urgent problem to be solved. Remote control life-saving double-sided water unmanned aerial vehicle is widely used in rescue sites as an efficient water rescue or investigation product. The double-sided water inlet spray pump structure of the double-sided water unmanned aerial vehicle remote control life-saving device is different from the single-sided water inlet of the unmanned lifeboat. Its double-sided opening spray pump structure enables the double-sided water unmanned aerial vehicle remote control life-saving device to be used on both sides. This feature enables the life-saving device to withstand strong winds and waves, and it can be used normally even if it is overturned by wind and waves. For example, Chinese patent CN201820000678.3 discloses a double-sided water vehicle, but the traditional double-inlet pump spray is in the open state when working, so the water inlet at the bottom of the water will suck in water, and the water inlet above the water surface will suck in air, causing a significant reduction in power. Summary of the invention

[0003] In view of the above-mentioned shortcomings that currently exist, the present invention provides a water jet propulsion device and a double-surface water vehicle, which only open the water inlet below the water surface to prevent air from entering from the water inlet above the water surface, greatly improve the pump jet efficiency, and improve the speed and stability of the double-surface water unmanned vehicle.

[0004] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0005] A water jet propulsion device, comprising a main body and a water jet device arranged in the main body, the main body having multiple water inlets and a water outlet, the multiple water inlets being distributed on two water contacting surfaces, a central axis being provided at the axial center of the main body, the central axis being connected to a water inlet cover rotatable around the central axis, the water inlet cover being connected to a driving device, the driving device driving the water inlet cover to rotate around the central axis so that the water inlet cover always covers the water inlet located above the water surface.

[0006] According to one aspect of the present invention, the driving device includes a bearing arranged around the central axis, one radial side of the bearing is fixedly connected to the water inlet cover, and the other radial side is connected to a counterweight.

[0007] According to one aspect of the present invention, the moment formed by the mass of the counterweight block and the distance to the center of the central axis is greater than the moment formed by the mass of the water inlet cover and the distance to the center of the central axis.

[0008] According to one aspect of the present invention, the driving device includes a bearing arranged around the central axis, a gear is provided on the bearing, and the gear is transmission-connected to a gear steering gear.

[0009] According to one aspect of the present invention, the bearing is fixedly connected to the water inlet cover via a bracket.

[0010] According to one aspect of the present invention, the steering gear is connected to a control system, and the control system includes a posture sensor for determining a water inlet located on the water surface.

[0011] According to one aspect of the present invention, the driving device includes a steering gear, the steering gear output shaft is coaxially fixedly connected to the central shaft and can drive the central shaft to rotate, and the central shaft is fixedly connected to the water inlet cover via a bracket.

[0012] According to one aspect of the present invention, the inner surface of the main body has a circular cross section.

[0013] According to one aspect of the present invention, the water spray device includes an engine, an impeller and an engine mounting bracket, the engine is fixed inside the main body through the engine mounting bracket, and the impeller is located at the water outlet and connected to the engine output shaft.

[0014] According to one aspect of the present invention, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0015] A double-surface watercraft comprises a vehicle body with two water-contacting surfaces and at least one of the above-mentioned water jet propulsion devices.

[0016] According to one aspect of the present invention, the aircraft body has a plurality of connection parts, the number of which is the same as the number of the water jet propulsion devices, and each connection part is connected to a water jet propulsion device.

[0017] Advantages of the implementation of the present invention: The water jet propulsion device described in the present invention includes a main body and a water jet device arranged in the main body, the main body has multiple water inlets and a water outlet, the multiple water inlets are distributed on two water-contacting surfaces, a central axis is provided at the axial center of the main body, the central axis is connected to a water inlet cover that can rotate around the central axis, the water inlet cover is connected to a driving device, and the water inlet cover is driven by the driving device to rotate around the central axis so that the water inlet cover always covers the water inlet located above the water surface; many improvements have been made in the structure of the water inlet spray pump, and under the action of gravity or driving force, the water inlet cover that can rotate around the central axis can ensure that the water inlet on the water surface is closed, while the water inlet under the water surface is opened. Compared with the traditional double-sided remote-controlled double-sided water unmanned aircraft, which has both water inlets open, a large amount of air will enter from the water inlet above the water surface, resulting in low efficiency of the water jet propulsion. The improved remote-controlled double-sided water unmanned aircraft only opens the water inlet below the water surface under normal working conditions, avoiding the entry of air from the water inlet on the water surface, greatly improving the pump spray efficiency and improving the speed and stability of the double-sided water unmanned aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of a water jet propulsion device according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the driving device and the water inlet cover according to the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the driving device and the water inlet cover according to the first embodiment of the present invention;

[0023] Figure 5 This is a working schematic diagram of the driving device and the water inlet cover structure according to the first embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a water jet propulsion device according to the second embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the driving device and the water inlet cover according to the second embodiment of the present invention;

[0026] Figure 8 This is a working schematic diagram of the driving device and the water inlet cover structure according to the second embodiment of the present invention;

[0027] Fig. 9 This is a schematic diagram of a water jet propulsion device according to Embodiment 3 of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of the driving device and the water inlet cover according to the third embodiment of the present invention;

[0029] Fig.11 This is a working schematic diagram of the driving device and the water inlet cover structure according to the third embodiment of the present invention;

[0030] Fig.12 A schematic structural diagram of a double-surface watercraft according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] like Figures 1 to 5 As shown, a water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, the main body has a plurality of water inlets 3 and a water outlet 4, the plurality of water inlets are distributed on two water contact surfaces, a central axis 5 is provided at the axial center of the main body, the central axis is connected to a water inlet cover 6 that can rotate around the central axis, the water inlet cover is connected to a driving device 7, the driving device drives the water inlet cover to rotate around the central axis, so that the water inlet cover is always covered at the water inlet located above the water surface, the driving device comprises a bearing 71 arranged around the central axis, one side of the bearing is fixedly connected to the water inlet cover in the radial direction, and a counterweight block 72 is connected to the other side in the same radial direction. The function of the counterweight block is to use gravity to make the water inlet cover always face upwards, block the water inlet above the water surface, and prevent air from being sucked in and causing the efficiency of the spray pump to decrease.

[0034] In practical applications, the moment formed by the mass of the counterweight block and the distance to the center axis is greater than the moment formed by the mass of the water inlet cover and the distance to the center axis, so that the counterweight block can always keep the water inlet cover at the top, that is, on the water surface, to block the water inlet on the water surface.

[0035] In practical applications, the bearing is fixedly connected to the water inlet cover via a bracket 73 .

[0036] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0037] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0038] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0039] Working principle of this embodiment:

[0040] When the double-sided unmanned water vehicle is thrown into the water, the counterweight of the driving device is subjected to gravity, and the water jet propulsion device is maintained in a posture with the counterweight at the bottom and the water inlet cover at the top. Even if the double-sided unmanned water vehicle is overturned during navigation, the surface below the water surface becomes the surface above the water surface, but since the direction of gravity remains unchanged, the water inlet cover and the driving device will rotate under the action of gravity to a posture with the counterweight at the bottom and the water inlet cover at the top, thereby blocking the water inlet above the water surface.

[0041] Embodiment 2

[0042] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, a water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, the main body has a plurality of water inlets 3 and a water outlet 4, the plurality of water inlets are distributed on two water contact surfaces, a central axis 5 is provided at the axial center of the main body, the central axis is connected to a water inlet cover 6 rotatable around the central axis, the water inlet cover is connected to a driving device 7, the water inlet cover is driven to rotate around the central axis by the driving device, so that the water inlet cover is always covered at the water inlet located above the water surface, the driving device comprises a bearing 71 arranged around the central axis, the bearing is provided with a gear 72, and the gear is transmission-connected to a gear steering gear 74.

[0043] In practical applications, the bearing is fixedly connected to the water inlet cover via a bracket 73 .

[0044] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0045] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0046] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0047] In practical applications, the gear steering engine 74 is connected to a control system, and the control system includes a posture sensor for determining the water inlet located on the water surface.

[0048] Working principle of this embodiment:

[0049] The control system can sense the posture of the life evacuator through the posture sensor and control the rotation of the gear servo, thereby controlling the position of the water inlet cover and then controlling the opening and closing of the water inlet; when the double-sided water unmanned vehicle is thrown into the water, the control system senses the posture of the life evacuator and controls the driving device to make the water inlet cover close the water inlet on the air side.

[0050] Embodiment 3

[0051] like Figure 2 , Fig. 9 , Fig.10 and Fig.11 As shown, a water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, the main body has a plurality of water inlets 3 and a water outlet 4, the plurality of water inlets are distributed on two water contact surfaces, a central axis 5 is provided at the axial center of the main body, the central axis is connected to a water inlet cover 6 rotatable around the central axis, the water inlet cover is connected to a driving device 7, the water inlet cover is driven to rotate around the central axis by the driving device, so that the water inlet cover is always covered at the water inlet located above the water surface, the driving device comprises a steering gear 71, the steering gear output shaft is coaxially fixedly connected to the central axis and can drive the central axis to rotate, and the central axis is fixedly connected to the water inlet cover through a bracket 72.

[0052] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0053] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0054] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0055] In practical applications, the steering gear 71 is connected to a control system, and the control system includes a posture sensor for determining the water inlet located on the water surface.

[0056] Working principle of this embodiment:

[0057] The control system can sense the posture of the life evacuator through the posture sensor and control the rotation of the servo, thereby controlling the position of the water inlet cover and then controlling the opening and closing of the water inlet; when the double-sided water unmanned vehicle is thrown into the water, the control system senses the posture of the life evacuator and controls the driving device to make the water inlet cover close the water inlet on the air side.

[0058] Embodiment 4

[0059] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.12 As shown, a double-surface watercraft comprises a craft body 200 with two water-contacting surfaces and a water jet propulsion device 100, wherein the water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, wherein the main body has a plurality of water inlets 3 and a water outlet 4, wherein the plurality of water inlets are distributed on the two water-contacting surfaces, wherein a central axis 5 is arranged at the axial center of the main body, wherein the central axis is connected with a water inlet cover 6 rotatable around the central axis, wherein the water inlet cover is connected with a driving device 7, wherein the driving device drives the water inlet cover to rotate around the central axis so that the water inlet cover is always shielded at the water inlet located above the water surface, wherein the driving device comprises a bearing 71 arranged around the central axis, wherein one radial side of the bearing is fixedly connected with the water inlet cover, and the other radial side is connected with a counterweight block 72. The function of the counterweight block is to utilize gravity to make the water inlet cover always face upward, block the water inlet above the water surface, and prevent air from being sucked in and causing the efficiency of the spray pump to be reduced.

[0060] In practical applications, the vehicle body has a plurality of connection parts 201, the number of which is the same as the number of water jet propulsion devices, and each connection part is connected to a water jet propulsion device.

[0061] In practical applications, the moment formed by the mass of the counterweight block and the distance to the center axis is greater than the moment formed by the mass of the water inlet cover and the distance to the center axis, so that the counterweight block can always keep the water inlet cover at the top, that is, on the water surface, to block the water inlet on the water surface.

[0062] In practical applications, the bearing is fixedly connected to the water inlet cover via a bracket 73 .

[0063] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0064] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0065] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0066] Working principle of this embodiment:

[0067] When the double-sided unmanned water vehicle is thrown into the water, the counterweight of the driving device is subjected to gravity, and the water jet propulsion device is maintained in a posture with the counterweight at the bottom and the water inlet cover at the top. Even if the double-sided unmanned water vehicle is overturned during navigation, the surface below the water surface becomes the surface above the water surface, but since the direction of gravity remains unchanged, the water inlet cover and the driving device will rotate under the action of gravity to a posture with the counterweight at the bottom and the water inlet cover at the top, thereby blocking the water inlet above the water surface.

[0068] Embodiment 5

[0069] like Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig.12 As shown, a double-surface watercraft comprises a craft body 200 having two water-contacting surfaces and a water jet propulsion device 100, wherein the water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, wherein the main body has a plurality of water inlets 3 and a water outlet 4, wherein the plurality of water inlets are distributed on the two water-contacting surfaces, wherein a central axis 5 is arranged at the axial center of the main body, wherein the central axis is connected with a water inlet cover 6 rotatable around the central axis, wherein the water inlet cover is connected with a driving device 7, wherein the water inlet cover is driven to rotate around the central axis by the driving device so that the water inlet cover is always covered at the water inlet located above the water surface, wherein the driving device comprises a bearing 71 arranged around the central axis, wherein a gear 72 is arranged on the bearing, and wherein the gear is transmission-connected with a gear servo 74.

[0070] In practical applications, the vehicle body has a plurality of connection parts 201, the number of which is the same as the number of water jet propulsion devices, and each connection part is connected to a water jet propulsion device.

[0071] In practical applications, the bearing is fixedly connected to the water inlet cover via a bracket 73 .

[0072] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0073] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0074] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0075] In practical applications, the gear steering engine 74 is connected to a control system, and the control system includes a posture sensor for determining the water inlet located on the water surface.

[0076] Working principle of this embodiment:

[0077] The control system can sense the posture of the life evacuator through the posture sensor and control the rotation of the gear servo, thereby controlling the position of the water inlet cover and then controlling the opening and closing of the water inlet; when the double-sided water unmanned vehicle is thrown into the water, the control system senses the posture of the life evacuator and controls the driving device to make the water inlet cover close the water inlet on the air side.

[0078] Embodiment 6

[0079] like Figure 2 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, a double-surface watercraft comprises a craft body 200 with two water-contacting surfaces and a water jet propulsion device 100, wherein the water jet propulsion device comprises a main body 1 and a water jet device 2 arranged in the main body, wherein the main body has a plurality of water inlets 3 and a water outlet 4, wherein the plurality of water inlets are distributed on the two water-contacting surfaces, wherein a central axis 5 is arranged at the axial center of the main body, wherein the central axis is connected with a water inlet cover 6 rotatable around the central axis, wherein the water inlet cover is connected with a driving device 7, wherein the water inlet cover is driven to rotate around the central axis by the driving device so that the water inlet cover is always covered at the water inlet located above the water surface, wherein the driving device comprises a steering gear 71, wherein the steering gear output shaft is coaxially fixedly connected with the central axis and can drive the central axis to rotate, and the central axis is fixedly connected to the water inlet cover via a bracket 72.

[0080] In practical applications, the vehicle body has a plurality of connection parts 201, the number of which is the same as the number of water jet propulsion devices, and each connection part is connected to a water jet propulsion device.

[0081] In practical applications, the cross section of the inner surface of the main body is circular, so that the water inlet cover can rotate around the central axis in the main body.

[0082] In practical applications, the water spray device 2 includes an engine 21, an impeller 22 and an engine mounting bracket 23. The engine is fixed inside the main body through the engine mounting bracket. The impeller is located at the water outlet and connected to the engine output shaft.

[0083] In practical applications, the area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

[0084] In practical applications, the steering gear 71 is connected to a control system, and the control system includes a posture sensor for determining the water inlet located on the water surface.

[0085] Working principle of this embodiment:

[0086] The control system can sense the posture of the life evacuator through the posture sensor and control the rotation of the servo, thereby controlling the position of the water inlet cover and then controlling the opening and closing of the water inlet; when the double-sided water unmanned vehicle is thrown into the water, the control system senses the posture of the life evacuator and controls the driving device to make the water inlet cover close the water inlet on the air side.

[0087] Advantages of the implementation of the present invention: The water jet propulsion device described in the present invention includes a main body and a water jet device arranged in the main body, the main body has multiple water inlets and a water outlet, the multiple water inlets are distributed on two water-contacting surfaces, a central axis is provided at the axial center of the main body, the central axis is connected to a water inlet cover that can rotate around the central axis, the water inlet cover is connected to a driving device, and the water inlet cover is driven by the driving device to rotate around the central axis so that the water inlet cover always covers the water inlet located above the water surface; many improvements have been made in the structure of the water inlet spray pump, and under the action of gravity or driving force, the water inlet cover that can rotate around the central axis can ensure that the water inlet on the water surface is closed, while the water inlet under the water surface is opened. Compared with the traditional double-sided remote-controlled double-sided water unmanned aircraft, which has both water inlets open, a large amount of air will enter from the water inlet above the water surface, resulting in low efficiency of the water jet propulsion. The improved remote-controlled double-sided water unmanned aircraft only opens the water inlet below the water surface under normal working conditions, avoiding the entry of air from the water inlet on the water surface, greatly improving the pump spray efficiency and improving the speed and stability of the double-sided water unmanned aircraft.

[0088] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A water jet propulsion device, comprising a main body and a water jet device arranged in the main body, wherein the main body has a plurality of water inlets and a water outlet, wherein the plurality of water inlets are distributed on two water contact surfaces, and wherein: The inner surface cross section of the main body is circular, and a central axis is provided at the axial center of the main body, and a water inlet cover rotatable around the central axis is connected to the central axis, and the water inlet cover is connected to a driving device, and the driving device drives the water inlet cover to rotate around the central axis, so that the water inlet cover always covers the water inlet located above the water surface; The driving device comprises a bearing arranged around the central axis, one radial side of the bearing is fixedly connected to the water inlet cover, and the other radial side is connected to a counterweight block; the moment formed by the mass of the counterweight block and the distance to the center of the central axis is greater than the moment formed by the mass of the water inlet cover and the distance to the center of the central axis; Alternatively, the driving device comprises a bearing arranged around the central axis, the bearing is provided with a gear, and the gear is transmission-connected to a gear steering gear; the bearing is fixedly connected to the water inlet cover through a bracket; Alternatively, the driving device includes a steering gear, an output shaft of the steering gear is coaxially fixedly connected to the central shaft and can drive the central shaft to rotate, and the central shaft is fixedly connected to the water inlet cover via a bracket.

2. The water jet propulsion device according to claim 1, characterized in that: The steering gear is connected to a control system, and the control system includes a posture sensor for determining a water inlet located on the water surface.

3. The water jet propulsion device according to claim 1 or 2, characterized in that: The water spray device comprises an engine, an impeller and an engine fixing frame, the engine is fixed inside the main body through the engine fixing frame, and the impeller is located at the water outlet and connected to the engine output shaft.

4. The water jet propulsion device according to claim 3, characterized in that: The area of ​​the water inlet cover is larger than the area of ​​the water inlet located above the water surface.

5. A double-surface watercraft, characterized in that: The double-surface watercraft comprises a vehicle body having two water-contacting surfaces and at least one water jet propulsion device according to any one of claims 1 to 4.

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