Underwater propeller and vehicle

Abstract

The utility model discloses an underwater propeller and a vehicle. The underwater propeller comprises a pipe body and a driving mechanism, a first duct and a second duct which are communicated with each other are arranged in the pipe body, one end, far away from the second duct, of the first duct is a first duct opening, and one end, far away from the first duct, of the second duct is a second duct opening; a stator is detachably connected into the first duct; and a propeller is arranged in the second duct. The driving mechanism comprises a motor, one end of an output shaft of the motor penetrates through the pipe body and is detachably connected with the propeller, and a sealing assembly is arranged between the output shaft and the pipe body. The motor capable of rotating forwards and backwards drives the output shaft to rotate clockwise or anticlockwise so as to drive the propellers to rotate clockwise or anticlockwise, so that the direction of water flow in the first duct and the second duct is controlled, water is sprayed out from the second duct opening or the first duct opening, forward or reverse driving force is generated, and the water flow direction is controlled. The overall platform is pushed to advance or retreat.

Description

Technical Field

[0001] This utility model belongs to the field of propulsion technology, and in particular relates to an underwater propulsion device and vehicle. Background Technology

[0002] Underwater thrusters generate thrust through rotating blades or water jets to power devices such as ships, underwater robots, and wading vehicles. Existing underwater thrusters use a single-duct structure. While single-duct underwater thrusters can generate forward thrust to propel the platform forward, they cannot generate reverse thrust and therefore cannot control the platform to move backward. Utility Model Content

[0003] The purpose of this invention is to provide an underwater propulsion device and vehicle to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides an underwater propulsion device, including a tube body and a drive mechanism. The tube body contains a first duct and a second duct that are interconnected. The end of the first duct furthest from the second duct is the first duct opening, and the end of the second duct furthest from the first duct is the second duct opening. A stator is detachably connected inside the first duct. A propeller is housed inside the second duct. The drive mechanism includes a reversible motor. One end of the motor's output shaft passes through the tube body and is detachably connected to the propeller. The rotation direction of the propeller is controlled based on the forward and reverse output of the motor. A sealing assembly is provided between the output shaft and the tube body.

[0005] Optionally, the pipe body includes a first pipe body and a second pipe body that are detachably connected, the first duct is disposed inside the first pipe body, the second duct is disposed inside the second pipe body, and the outer walls of the first pipe body and the second pipe body are both arc-shaped structures.

[0006] Optionally, a sealing ring is provided between the first pipe body and the second pipe body, and the first pipe body and the second pipe body are detachably connected by bolts and nuts.

[0007] Optionally, the stator is disposed at the end of the first duct away from the opening of the first duct, the propeller is disposed at the end of the second duct away from the opening of the second duct, and the plane where the interface of the first duct and the second duct is located is perpendicular to the output shaft.

[0008] Optionally, the inner walls of the first culvert and the second culvert are both arc-shaped structures, the openings of the first culvert and the second culvert face the same direction, and the angle between the planes containing the openings of the first culvert and the second culvert is an acute angle.

[0009] Optionally, the propeller and the output shaft are detachably connected by a double nut, the double nut comprising two nuts with opposite threads.

[0010] Optionally, the sealing assembly is a double oil seal structure.

[0011] Optionally, a motor compartment is provided on the radially outer side of the second tube body, the motor is detachably connected to the inside of the motor compartment, the motor is electrically connected to a driver, and the driver is detachably connected to the motor compartment.

[0012] Optionally, the motor compartment includes a detachably connected compartment body and a sealed end cover, and a sealing ring is provided at the connection between the compartment body and the sealed end cover.

[0013] A vehicle includes a body, wherein the underwater propulsion device is disposed at the bottom of the body.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The underwater thruster disclosed in this utility model includes two operating modes:

[0016] First operating condition: The second duct is the water inlet and the first duct is the water outlet; the motor drives the output shaft to rotate clockwise, which in turn drives the propeller to rotate clockwise. Water near the second duct is driven by the rotation of the propeller to pass through the second duct, the second duct and the first duct in sequence, and finally sprayed out through the first duct, thereby generating positive thrust to propel the overall platform (ships, underwater robots, water-wading vehicles, etc.) forward.

[0017] Second operating condition: The second culvert is the outlet and the first culvert is the inlet; the motor reverses to drive the output shaft to rotate counterclockwise, which in turn drives the propeller to rotate counterclockwise. Water near the first culvert passes through the first culvert, the first culvert and the second culvert in sequence under the action of the propeller rotation, and finally sprays out through the second culvert, thereby generating reverse thrust, causing the overall platform (ship, underwater robot, water-wading vehicle, etc.) to move backward.

[0018] This invention uses a reversible motor to drive the output shaft to rotate clockwise or counterclockwise, which in turn drives the propeller to rotate clockwise or counterclockwise, thereby controlling the direction of water flow in the first and second ducts. This causes water to spray out from the opening of the second or first duct, generating a positive or negative thrust that propels the overall platform forward or backward. This invention also uses a sealing component to prevent water from leaking out from the gap between the output shaft and the tube body, thus preventing efficiency loss caused by water leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the underwater thruster structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the underwater thruster of this utility model.

[0022] Among them, 1. First duct, 2. Stator, 3. Double nut, 4. Propeller, 5. Cabin body, 6. Double oil seal structure, 7. Driver, 8. Output shaft, 9. First duct opening, 10. Second duct, 11. Second duct opening, 12. Motor, 14. Bolt-nut, 15. Sealing end cover. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] This utility model provides an underwater propulsion device, including a tube body and a drive mechanism. The tube body has a first duct 1 and a second duct 10 that are interconnected. The end of the first duct 1 away from the second duct 10 is a first duct opening 9, and the end of the second duct 10 away from the first duct 1 is a second duct opening 11. A stator 2 is detachably connected inside the first duct 1. A propeller 4 is installed inside the second duct 10. The drive mechanism includes a reversible motor 12. One end of the output shaft 8 of the motor 12 passes through the tube body and is detachably connected to the propeller 4. The rotation direction of the propeller 4 is controlled based on the forward and reverse output of the motor 12. A sealing assembly is provided between the output shaft 8 and the tube body.

[0025] The underwater thruster disclosed in this utility model includes two operating modes:

[0026] First working condition: The second duct opening 11 is the water inlet and the first duct opening 9 is the water outlet; the motor 12 drives the output shaft to rotate clockwise, which in turn drives the propeller 4 to rotate clockwise. Under the action of the rotation of the propeller 4, the water near the second duct opening 11 passes through the second duct opening 11, the second duct 10 and the first duct 1 in sequence, and finally sprays out through the first duct opening 9, thereby generating positive thrust and making the overall platform (ship, underwater robot, water-wading vehicle and other devices) move forward.

[0027] Second operating condition: The second duct opening 11 is the water outlet and the first duct opening 9 is the water inlet; the motor 12 reverses to drive the output shaft to rotate counterclockwise, which in turn drives the propeller 4 to rotate counterclockwise. Under the action of the rotation of the propeller 4, the water near the first duct opening 9 passes through the first duct opening 9, the first duct 1 and the second duct 10 in sequence, and finally sprays out through the second duct opening 11, thereby generating reverse thrust, causing the overall platform (ship, underwater robot, water-wading vehicle and other devices) to move backward.

[0028] This invention uses a reversible motor to drive the output shaft to rotate clockwise or counterclockwise, which in turn drives the propeller 4 to rotate clockwise or counterclockwise, thereby controlling the direction of water flow in the first duct 1 and the second duct 10. This causes water to be ejected from the second duct opening 11 or the first duct opening 9, generating a positive or negative thrust to propel the overall platform forward or backward. This invention also uses a sealing assembly to prevent water from flowing out of the gap between the output shaft 8 and the pipe body, thereby preventing efficiency loss caused by water leakage.

[0029] The design is further optimized so that the tube body includes a detachably connected first tube and a second tube. A first duct 1 is located inside the first tube, and a second duct 10 is located inside the second tube. Both the first and second tubes have arc-shaped outer walls. In this embodiment, the first and second tubes are separate structures, facilitating the installation of the stator 2, propeller 4, and propeller 4 components, and simplifying subsequent equipment maintenance, repair, and disassembly. The arc-shaped outer walls of both the first and second tubes reduce the resistance exerted by the first and second tubes on the overall platform during forward or backward movement.

[0030] Preferably, a sealing ring is provided between the first pipe body and the second pipe body, and the first pipe body and the second pipe body are detachably connected by bolts and nuts 14. In this embodiment, the sealing ring is a rubber gasket. The first pipe body and the second pipe body are detachably connected by bolts and nuts 14. During the connection process, the rubber gasket is squeezed and deformed, thereby achieving the sealing work between the first pipe body and the second pipe body, preventing water in the first duct 1 and the second duct 10 from flowing out between the first pipe body and the second pipe body, and thus preventing efficiency loss caused by water leakage.

[0031] In a further optimized design, the stator 2 is positioned at the end of the first duct 1 furthest from the first duct opening 9, and the propeller 4 is positioned at the end of the second duct 10 furthest from the second duct opening 11. The plane containing the interface between the first duct 1 and the second duct 10 is perpendicular to the output shaft 8. In this embodiment, the stator 2 and the propeller 4 are close to each other. In the first operating condition, the water flow, after passing through the propeller 4, is directly rectified by the stator 2, and the rectified water flow is ejected from the first duct opening 9. In the second operating condition, the water flow, after being rectified by the stator 2 and then acted upon by the propeller 4, is ejected from the second duct opening 11. In both operating conditions, the water flow continuously passes through the stator and the propeller, reducing noise caused by disordered water flow. Furthermore, in this embodiment, the radial cross-sections of both the first duct 1 and the second duct 10 are circular.

[0032] Preferably, the inner walls of both the first duct 1 and the second duct 10 are arc-shaped structures, the first duct opening 9 and the second duct opening 11 face the same direction, and the included angle between the planes containing the first duct opening 9 and the second duct opening 11 is an acute angle. The arc-shaped inner walls of both the first duct 1 and the second duct 10 reduce water flow resistance while changing the direction of the water flow. In this embodiment, the first duct opening 9 and the second duct opening 11 face the same direction, and the included angle between the planes containing the first duct opening 9 and the second duct opening 11 is an acute angle, ensuring that the water flow directions ejected from the first duct opening 9 and the second duct opening 11 are the same, but the two water flow directions have a certain angle, ensuring that the underwater propulsion device can generate forward or reverse thrust. Figure 2 To illustrate the arrangement, when the underwater propulsion device is applied to a water-wading vehicle, the first duct 9 and the second duct 11 are arranged downwards. The first duct 9 faces diagonally downwards, while the second duct 11 can face directly downwards or also diagonally downwards. However, the inclination directions of the first duct 9 and the second duct 11 are opposite, and both face downwards. This ensures that water can enter through either the first duct 9 or the second duct 11, preventing the underwater propulsion device from drawing in air. Furthermore, the water-wading vehicle has a downward reaction force, which helps increase the friction between the vehicle and the ground, thereby improving the thrust effect of the underwater propulsion device.

[0033] Preferably, the propeller 4 and the output shaft 8 are detachably connected by a double nut 3, which comprises two nuts with opposite thread directions. This ensures that, regardless of whether the underwater thruster is in the first or second operating condition, one nut is always locked with its thread direction matching that of the rotating shaft, effectively preventing the locking function of the double nut 3 from failing.

[0034] Preferably, the sealing assembly is a double oil seal structure 6. The double oil seal structure 6, also known as a double-seal structure, provides redundancy, increasing sealing reliability. A sealing oil cavity is formed between the two oil seals, where the internal oil lubricates the shaft rotation, reducing the friction coefficient between the rotating output shaft 8 and the seals, minimizing heat generation, and improving the dynamic seal transmission efficiency and long-term reliability of the sealing structure. Furthermore, a bearing is installed between the output shaft 8 and the tube body to ensure that the output shaft 8 can properly drive the propeller 4.

[0035] In a further optimized design, a motor compartment is provided on the radially outer side of the second tube. The motor 12 is detachably connected inside the motor compartment, and the motor 12 is electrically connected to a driver 7, which is also detachably connected to the motor compartment. In this embodiment, the speed and direction of the motor 12 are controlled by the driver 7 signal, and the driver 7 is mounted and fixed on the side of the motor compartment. This helps to save axial installation space, and the layout of the driver's electronic components is no longer limited by the circular cross-section.

[0036] Preferably, the motor compartment includes a detachably connected main body 5 and a sealing end cover 15. A sealing ring is provided at the connection between the main body 5 and the sealing end cover 15 to seal the connection, forming a sealed chamber inside the motor compartment. Annular grooves are formed at opposite positions on both the main body 5 and the sealing end cover 15, arranged vertically opposite each other. The cross-section of the two annular grooves is rectangular, forming a square groove. The sealing ring is a square-section annular sealing ring set within the square groove. The sealing ring is made of the same material as the main body 5 and the sealing end cover 15, but is elastic, preventing the introduction of metal parts of different materials, eliminating electrochemical corrosion between different materials, improving the reliability of the connection, and resulting in a simple and aesthetically pleasing overall structure.

[0037] A vehicle includes a body with an underwater propulsion unit mounted on its underside. When the vehicle is wading through water, the underwater propulsion unit selects different operating conditions depending on the environment. When the vehicle needs to move forward, the underwater propulsion unit switches to the first operating condition, generating positive thrust to propel the vehicle forward. When the vehicle needs to reverse or move backward, the underwater propulsion unit switches to the second operating condition, generating negative thrust to propel the vehicle backward.

[0038] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this application; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0039] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An underwater propulsion device, characterized in that, include: The tube body has a first duct (1) and a second duct (10) that are interconnected inside the tube body. The end of the first duct (1) away from the second duct (10) is the first duct opening (9), and the end of the second duct (10) away from the first duct (1) is the second duct opening (11). A stator (2) is detachably connected inside the first duct (1). A propeller (4) is installed inside the second duct (10). The drive mechanism includes a reversible motor (12), one end of the output shaft (8) of the motor (12) passes through the tube and is detachably connected to the propeller (4). Based on the forward and reverse output of the motor (12), the rotation direction of the propeller (4) is controlled. A sealing assembly is provided between the output shaft (8) and the tube.

2. The underwater thruster according to claim 1, characterized in that, The pipe body includes a first pipe body and a second pipe body that can be detachably connected. The first duct (1) is disposed inside the first pipe body, and the second duct (10) is disposed inside the second pipe body. The outer walls of the first pipe body and the second pipe body are both arc-shaped structures.

3. The underwater thruster according to claim 2, characterized in that, A sealing ring is provided between the first pipe body and the second pipe body, and the first pipe body and the second pipe body are detachably connected by bolts and nuts (14).

4. The underwater thruster according to claim 2, characterized in that, The stator (2) is located at the end of the first duct (1) away from the first duct opening (9), the propeller (4) is located at the end of the second duct (10) away from the second duct opening (11), and the plane where the interface of the first duct (1) and the second duct (10) is located is perpendicular to the output shaft (8).

5. The underwater thruster according to claim 2, characterized in that, The inner walls of the first culvert (1) and the second culvert (10) are both arc-shaped structures. The first culvert opening (9) and the second culvert opening (11) face the same direction, and the angle between the planes containing the first culvert opening (9) and the second culvert opening (11) is an acute angle.

6. The underwater thruster according to claim 1, characterized in that, The propeller (4) and the output shaft (8) are detachably connected by a double nut (3), which comprises two nuts with opposite threads.

7. The underwater thruster according to claim 1, characterized in that, The sealing assembly is a double oil seal structure (6).

8. The underwater thruster according to claim 2, characterized in that, The second tube has a motor compartment on its radial outer side. The motor (12) is detachably connected to the inside of the motor compartment. The motor (12) is electrically connected to a driver (7). The driver (7) is detachably connected to the motor compartment.

9. The underwater thruster according to claim 8, characterized in that, The motor compartment includes a detachably connected main body (5) and a sealing end cap (15), and a sealing ring is provided at the connection between the main body (5) and the sealing end cap (15).

10. A vehicle, characterized in that, The vehicle includes a vehicle body, the bottom of which is provided with an underwater propulsion device as described in any one of claims 1-9.

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