Air-ground dual-purpose propeller tire

Abstract

The invention belongs to the technical field of aerocar electric propulsion systems, and particularly relates to an air-ground dual-purpose propeller tire which comprises a wheel, a motor, a planetary gear reducer, a first clutch, a rotor wing, a second clutch, a motor output hollow shaft and a suspension connecting shaft. Switching between a land mode and an air mode is completed through cooperation of the clutch, the planetary gear reducer and the conventional motor. Meanwhile, through the mode that the hollow rotating shaft is matched with the central stator shaft, connection and installation of the rotors / propellers, two rotating parts, located on the two sides of the shaft, of the vehicle and a whole vehicle suspension are achieved. Meanwhile, a rotor wing / propeller protection device is designed, so that the rotor wing / propeller is prevented from being abraded by foreign matters such as sand and dust and stones and even entering a motor during running on the land, and the integration level and the safety of the power device are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric propulsion systems for flying cars, and particularly relates to an amphibious propeller tire. Background Art

[0002] Flying cars and amphibious vehicles are the core carriers of the next-generation transportation system and are gradually moving from proof-of-concept to commercial application. The core challenge lies in how to efficiently integrate the dual functions of air flight and ground travel. Currently, the mainstream solution relies on two independent power systems: in flight mode, ducted fans or high-speed propellers generate lift and propulsion through aerodynamic effects; in ground mode, traditional hub motors or mechanical transmission devices drive the tires to interact with the ground. However, this discrete architecture results in redundant power units, greatly reducing the flight range and ground mobility. The propeller speed of a flying car is generally between 2000 - 5000 rpm, while the speed of the tire under normal road conditions is usually less than 300 rpm. There is a significant difference in the order of magnitude between the two speeds, and direct coupling will cause problems such as a sharp drop in transmission efficiency, increased mechanical wear, and even system failure.

[0003] Chinese invention patent CN118596821A provides a vehicle propulsion device that realizes amphibious water drive by separately driving the tire and the propeller through a radial motor with two rotors, achieving the integration of amphibious water drive. Since the speed of the underwater propeller is the same as that of the wheel, this patent solution cannot be directly used for the combination of amphibious air and ground drive. At the same time, since the axis of the annular air gap surface of the radial motor is perpendicular to the road surface, the bumps on the road surface during land travel may cause the stator and rotor to rub or the rotor to be eccentric, resulting in unstable motor performance and damage to the motor structure.

[0004] Chinese invention patent CN112078299A provides a rotatable self-rotating - revolving multi-amphibious application gear train that realizes the engagement between the impeller and the hub through the retraction and extension of the impeller. The engagement of the impeller will cause the impeller to be subjected to large forces. For large-diameter rotors / propellers, this installation method will cause damage to the rotors / propellers; this design method will cause the wheel not to be self-locked when the propeller rotates and will rotate freely. The set wheel disc structure will directly block the air gap between the propeller and the wheel at the circumferential position, which will greatly affect the aerodynamic characteristics.

[0005] The Chinese utility model patent CN219115146U provides a wheel for an amphibious crane and an amphibious wheeled crane. This device protects the spokes by providing an openable and closable enclosed structure on the outside or both sides of the spokes. When driving underwater, this enclosed structure is in an open state. However, this enclosed structure uses a fan-shaped opening and closing structure similar to a folding fan. Since there is still a large area of occlusion after folding, it will affect the aerodynamic performance of the propeller. Therefore, it cannot be directly used as a propeller protection device for a flying car. Summary of the Invention

[0006] (1) Technical problems to be solved

[0007] The technical problem to be solved by the present invention is: how to improve the integration degree of the power system of a flying car, realize the common integration design of the propulsion device and the driving device, and solve the problems existing in the existing common integration design.

[0008] (2) Technical solutions

[0009] To solve the above technical problems, the present invention provides an amphibious propeller tire for land and air, as Figures 1-3 shown. The amphibious propeller tire includes: a wheel (1), a motor (2), a planetary gear reducer (4), a first clutch (5), a rotor wing (6), a second clutch (7), a hollow output shaft of the motor (8), a suspension connecting shaft (9), and an output shaft (10);

[0010] The motor (2) is used for transmission in matching with the first clutch (5), the second clutch (7), and the planetary gear reducer (4); the rotor of the motor (2) is connected to the hollow output shaft of the motor (8);

[0011] Among them, the first clutch (5) is located on the left side of the motor (2) axially, and the second clutch (7) and the rotor wing (6) are located on the right side of the motor (2) axially;

[0012] On the suspension connecting shaft (9), the planetary gear reducer (4), the first clutch (5), the motor (2), the second clutch (7), and the hollow output shaft of the motor (8) are sleeved; the left end of the suspension connecting shaft (9) is fixedly connected to the output shaft (10);

[0013] Among them, the first clutch (5) includes: a first clutch friction plate group (51), a first clutch steel plate group (52), and a first clutch housing (53); the first clutch housing (53) is coaxially and fixedly connected to the output shaft (10); the output shaft (10) is also coaxially and fixedly connected to the wheel spoke (13) of the wheel (1);

[0014] Among them, both the first clutch (5) and the second clutch (7) are multi-disc clutches; as Figures 2-3As shown, the housing of the rotor (6) and the second clutch (7) is an integral structure. The blades of the rotor (6) are evenly distributed in the circumferential direction of the housing of the second clutch (7). This integral structure is coaxially and fixedly connected to the hollow output shaft (8) of the motor;

[0015] The planetary gear reducer (4) includes: an outer gear ring (42), planetary gears (43), a sun gear (44), and a planet carrier (45), as Figure 4 shown; the shaft of the planet carrier (45) is a hollow shaft and is coaxially and fixedly connected to the rotor of the motor (2). The first clutch (5) is coaxially and fixedly connected to the outer gear ring (42). Grooves corresponding to the first clutch steel sheet group (52) are provided on the outer circle of the outer gear ring (42), which can perform circumferential limiting on the first clutch steel sheet group (52); the sun gear (44) is a hollow cylindrical structure and is coaxially and fixedly connected to the suspension connecting shaft (9) through splines as a non-rotating component.

[0016] Among them, under the land driving condition, the first clutch (5) is in the engaged state, and the second clutch (7) is in the disengaged state; when the motor (2) is powered on, the rotor drives the shaft of the planet carrier (45) to rotate. The sun gear (44) remains stationary, and the outer gear ring (42) rotates, driving the first clutch steel sheet group (52). At this time, the first clutch (5) is engaged, and the first clutch steel sheet group (52) transmits power to the first clutch friction plate group (51), driving the first clutch housing (53) to rotate. The first clutch housing (53) drives the coaxially connected output shaft (10) to rotate. Thus, the motor (2) transmits power to the output shaft (10), and then the output shaft (10) transmits the power to the wheel spokes (13), thereby driving the wheels (1) to rotate; at this time, the second clutch (7) is in the disengaged state, and its second clutch friction plate group (71) is separated from the second clutch steel sheet group (72), and no power is transmitted, and the rotor (6) does not rotate, as Figure 3 shown;

[0017] Among them, under the air flight condition, the first clutch (5) is in the disengaged state, and the second clutch (7) is in the engaged state; when the motor (2) is powered on, the rotor drives the hollow output shaft (8) of the motor to rotate, and the second clutch (7) is engaged to drive the rotor (6) to rotate; at this time, the first clutch (5) is disengaged, and the power cannot be transmitted to the wheels (1). The rotor (6) rotates while the wheels (1) do not rotate, preventing the large moment of inertia brought by the rotation of the wheels (1). And the non-rotation of the wheels (1) can also cooperate with the rotor (6) as a duct to provide additional lift for the propulsion system.

[0018] Among them, the wheel (1) includes a tire (11), a wheel hub (12), and wheel spokes (13); the wheel (1) is used as a wheel when driving on land and as a duct to increase additional thrust for the propulsion device when flying in the air.

[0019] Among them, the motor (2) is a radial flux motor or an axial flux motor, such as Figure 9 shown.

[0020] Among them, the housing of the motor (2) is dynamically sealed with the output hollow shaft (8) of the motor and the shaft of the planet carrier (45).

[0021] Among them, the land-air dual-purpose propeller tire further includes a protection device (3), and the protection device (3) includes: a first protection device (31) and a second protection device (32);

[0022] such as Figure 8 shown, the first protection device 31 is located between the rotor (6) and the motor (2) and is connected to the output hollow shaft (8) of the motor using a bearing; the second protection device 32 is located on the right side of the rotor (6) and is connected to the suspension connecting shaft (9) using a bearing, so as to ensure that the first protection device (31) and the second protection device (32) can rotate synchronously with the wheel (1) or not rotate when unfolded.

[0023] Among them, as Figure 5 shown, the first protection device (31) includes: a first telescopic rod (311), a first foldable cover (312), and a first protection device housing (313); the second protection device (32) includes: a second telescopic rod, a second foldable cover, and a second protection device housing;

[0024] The first protection device (31) is a disc-shaped structure with a hollow center, and there are 3 first telescopic rods (311) inside. One end of the first telescopic rod (311) is fixed inside the first protection device housing (313), and the other end can be telescoped like an umbrella support rod;

[0025] The first foldable cover (312) is an overall ring, and both ends are fixed on the first telescopic rod (311); the extension or shortening of the first telescopic rod (311) drives the first foldable cover (312) to unfold or contract to complete the opening and closing of the first protection device (31); at the same time, holes and annular grooves are provided on the inner side of the hub (12) of the wheel (1) and the first protection device (31) at the same axial position. When the first protection device (31) is opened, it is used to fix the first telescopic rod (311) and the first foldable cover (312).

[0026] Among them, under the land driving condition, the first telescopic rod (311) extends, the first foldable cover (312) unfolds, the first protection device (31) is in an open state, and the first telescopic rod (311) and the first foldable cover (312) are respectively inserted into the holes and annular grooves reserved on the hub (12) to prevent sand and stones from entering the inside of the wheel and damaging the rotor (6), such as Figures 6-7 shown;

[0027] Under the in-air flight condition, the first telescopic rod (311) drives the first foldable cover (312) to retract into the first protection device housing (313) at the axis center, and the first protection device (31) closes, minimizing the impact on the aerodynamic characteristics of the rotor.

[0028] Among them, the second protection device (32) has the same structure as the first protection device (31), and is also a disc-shaped structure with a hollow center. There are 3 second telescopic rods inside. One end of the second telescopic rod is fixed inside the second protection device housing, and the other end can be telescoped like an umbrella support rod;

[0029] The overall second foldable cover is a ring, and both ends are fixed on the second telescopic rod; the extension or shortening of the second telescopic rod drives the second foldable cover to unfold or contract to complete the opening and closing of the second protection device (32); at the same time, holes and annular grooves are provided on the inner side of the hub (12) of the wheel (1) and at the same axial position as the second protection device (32). When the second protection device (32) is opened, it is used to fix the second telescopic rod and the second foldable cover;

[0030] Under the land driving condition, the second telescopic rod extends, the second foldable cover unfolds, the second protection device (32) is in an open state, and the second telescopic rod and the second foldable cover are respectively inserted into the reserved holes and annular grooves on the hub (12) to prevent sand and stones from entering the inside of the wheel and damaging the rotor (6);

[0031] Under the in-air flight condition, the second telescopic rod drives the second foldable cover to retract into the second protection device housing at the axis center, and the second protection device (32) closes, minimizing the impact on the aerodynamic characteristics of the rotor.

[0032] (III) Beneficial effects

[0033] To improve the integration degree of the power system of the flying car, realize the shared integrated design of the propulsion device and the drive device, and solve the problems existing in the existing shared integrated design. The present invention proposes a land-air dual-purpose propeller tire, which completes the switching between the land and air modes through the cooperation of a clutch, a planetary gear reducer and a conventional motor. At the same time, through the combination of a hollow rotating shaft and a central stator shaft, the connection and installation of the rotor / propeller and the two rotating components on both sides of the vehicle axis with the vehicle suspension are realized. At the same time, a rotor / propeller protection device is designed to prevent foreign objects such as dust and stones from wearing the rotor / propeller or even entering the motor during land driving, improving the integration degree and safety of the power device.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The present invention controls the disconnection of the rotor / propeller and the wheel by installing clutches on both sides of the motor. When flying in the air, the clutch between the motor and the propeller is closed, and the clutch between the motor and the reducer is disconnected. The motor directly drives the rotor / propeller to rotate at a high speed to provide lift / thrust. The tires do not rotate and act as ducts, providing additional lift / thrust. When driving on land, the clutch between the motor and the rotor / propeller is disconnected, and the clutch between the motor and the reducer is closed. The motor drives the wheels to rotate at a low speed through the planetary gear reducer to provide forward driving force. The rotor / propeller does not rotate, thus avoiding the generation of undesired thrust in the axial direction of the tires when driving on land.

[0036] (2) The present invention designs the clutch between the motor and the rotor / propeller at the center of the rotor / propeller. The rotor / propeller blades are directly installed on the clutch housing, with high integration and reduced axial space of the system.

[0037] (3) The present invention can directly match and use conventional radial flux motors and axial flux motors on the market, with low requirements for the type and structural form of the motor. The purpose of the present invention can be achieved with corresponding installation structures. Therefore, the present invention has wide versatility and is easy to implement.

[0038] (4) The present invention directly drives the rotor / propeller by the motor, with a high speed and a light weight of the motor, which is suitable for the lightweight requirements of flying vehicles.

[0039] (5) The present invention is provided with retractable protection devices on both sides of the rotor / propeller. When the device contracts, its diameter is not greater than the diameter of the motor, and when it extends, the outer end can extend to the wheel hub. Under the driving condition on land, the retractable protection device is opened to prevent sand and gravel from entering the inside of the wheel and damaging the rotor / propeller, ensuring safety; at the same time, under the flying condition in the air, the retractable protection device retracts towards the axis center, minimizing the impact on the aerodynamic characteristics of the rotor / propeller. Description of the Drawings

[0040] Figure 1 Schematic diagram of a land-air dual-purpose propeller tire according to the present invention;

[0041] Figure 2 Schematic diagram of the installation of the wheel, rotor and protection device of a land-air dual-purpose propeller tire according to the present invention;

[0042] Figure 3 Schematic diagram of the rotor-clutch of a land-air dual-purpose propeller tire according to the present invention;

[0043] Figure 4 Schematic diagram of the planetary gear reducer-clutch of a land-air dual-purpose propeller tire according to the present invention;

[0044] Figure 5Schematic diagram of a land-air dual-purpose propeller tire protection device of the present invention;

[0045] Figure 6 Schematic diagram of the open state of the first protection device of a land-air dual-purpose propeller tire of the present invention;

[0046] Figure 7 Schematic diagram of the open state of the second protection device of a land-air dual-purpose propeller tire of the present invention;

[0047] Figure 8 Cross-sectional view of a land-air dual-purpose propeller tire of the present invention.

[0048] Figure 9 Schematic diagram of the motor structure of a land-air dual-purpose propeller tire of the present invention.

[0049] In the figure:

[0050] 1 Wheel, 11 Tire, 12 Wheel hub, 13 Spoke, 2 Motor, 3 Protection device, 31 First protection device, 32 Second protection device, 311 Telescopic rod, 312 Foldable cover, 313 Protection device housing, 4 Planetary gear reducer, 41 Planetary gear reducer housing, 42 Outer gear ring, 43 Planet gear, 44 Sun gear, 45 Planet carrier, 5 First clutch, 51 First clutch friction plate group, 52 First clutch steel plate group, 53 First clutch housing, 6 Rotor, 7 Second clutch, 71 Second clutch friction plate group, 72 Second clutch steel plate group, 8 Motor output hollow shaft, 9 Suspension connecting shaft, 10 Output shaft. Detailed implementation manners

[0051] To make the objectives, contents, and advantages of the present invention clearer, the following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings and embodiments.

[0052] To solve the above technical problems, the present invention provides a land-air dual-purpose propeller tire, as Figures 1-3 shown, the land-air dual-purpose propeller tire includes: a wheel (1), a motor (2), a planetary gear reducer (4), a first clutch (5), a rotor (6), a second clutch (7), a motor output hollow shaft (8), a suspension connecting shaft (9), and an output shaft (10);

[0053] The motor (2) is used to be matched with the first clutch (5), the second clutch (7), and the planetary gear reducer (4) for transmission; the rotor of the motor (2) is connected to the motor output hollow shaft (8);

[0054] Among them, the first clutch (5) is located on the left side of the motor (2) axially, and the second clutch (7) and the rotor (6) are located on the right side of the motor (2) axially;

[0055] On the suspension connecting shaft (9), a planetary gear reducer (4), a first clutch (5), a motor (2), a second clutch (7), and a motor output hollow shaft (8) are sleeved; the left end of the suspension connecting shaft (9) is fixedly connected to an output shaft (10);

[0056] Among them, the first clutch (5) includes: a first clutch friction plate group (51), a first clutch steel plate group (52), and a first clutch housing (53); the first clutch housing (53) is coaxially and fixedly connected to the output shaft (10); the output shaft (10) is also coaxially and fixedly connected to the wheel spoke (13) of the wheel (1);

[0057] Among them, both the first clutch (5) and the second clutch (7) are multi-plate clutches; as Figures 2-3 shown, the rotor (6) and the housing of the second clutch (7) are an integral structure, and the blades of the rotor (6) are evenly distributed in the circumferential direction of the housing of the second clutch (7), and this integral structure is coaxially and fixedly connected to the motor output hollow shaft (8);

[0058] The planetary gear reducer (4) includes: an outer gear ring (42), planetary gears (43), a sun gear (44), and a planet carrier (45), as Figure 4 shown; the shaft of the planet carrier (45) is a hollow shaft and is coaxially and fixedly connected to the rotor of the motor (2), the first clutch (5) is coaxially and fixedly connected to the outer gear ring (42), and the outer circumference of the outer gear ring (42) is provided with grooves corresponding to the first clutch steel plate group (52) to circumferentially limit the first clutch steel plate group (52); the sun gear (44) is a hollow cylindrical structure and is coaxially and fixedly connected to the suspension connecting shaft (9) as a non-rotating component through a spline.

[0059] Among them, in the land driving condition, the first clutch (5) is in the engaged state, and the second clutch (7) is in the disengaged state; the motor (2) is powered on, the rotor drives the shaft of the planet carrier (45) to rotate, the sun gear (44) remains stationary, the outer gear ring (42) rotates, driving the first clutch steel plate group (52). At this time, the first clutch (5) is engaged, and the first clutch steel plate group (52) transmits power to the first clutch friction plate group (51), driving the first clutch housing (53) to rotate. The first clutch housing (53) drives the coaxially connected output shaft (10) to rotate. Thus, the motor (2) transmits power to the output shaft (10), and then the output shaft (10) transmits power to the wheel spoke (13) to drive the wheel (1) to rotate; at this time, the second clutch (7) is in the disengaged state, and its second clutch friction plate group (71) is separated from the second clutch steel plate group (72), and no power is transmitted, and the rotor (6) does not rotate, as Figure 3 shown;

[0060] Among them, in the air flight condition, the first clutch (5) is in a disengaged state, and the second clutch (7) is in an engaged state; the motor (2) is powered on, and the rotor drives the hollow output shaft (8) of the motor to rotate. The second clutch (7) engages to drive the rotor (6) to rotate; at this time, the first clutch (5) is disengaged, and the power cannot be transmitted to the wheel (1). The rotor (6) rotates while the wheel (1) does not rotate, preventing the large moment of inertia caused by the rotation of the wheel (1). Moreover, when the wheel (1) does not rotate, it can also act as a duct to cooperate with the rotor (6) to provide additional lift for the propulsion system.

[0061] Among them, the wheel (1) includes a tire (11), a wheel hub (12), and a wheel spoke (13); the wheel (1) is used as a wheel when driving on land and as a duct to increase additional thrust for the propulsion device when flying in the air.

[0062] Among them, the motor (2) uses a radial flux motor or an axial flux motor, as Figure 9 shown.

[0063] Among them, the housing of the motor (2) is dynamically sealed with the hollow output shaft (8) of the motor and the shaft of the planet carrier (45).

[0064] Among them, the land-air dual-purpose propeller tire further includes a protection device (3), and the protection device (3) includes: a first protection device (31) and a second protection device (32);

[0065] As Figure 8 shown, the first protection device 31 is located between the rotor (6) and the motor (2) and is connected to the hollow output shaft (8) of the motor using a bearing; the second protection device 32 is located on the right side of the rotor (6) and is connected to the suspension connecting shaft (9) using a bearing, so as to ensure that the first protection device (31) and the second protection device (32) can rotate synchronously with the wheel (1) or not rotate when they are unfolded.

[0066] Among them, as Figure 5 shown, the first protection device (31) includes: a first telescopic rod (311), a first foldable cover (312), and a first protection device housing (313); the second protection device (32) includes: a second telescopic rod, a second foldable cover, and a second protection device housing;

[0067] The first protection device (31) is a disc-shaped structure with a hollow center. There are 3 first telescopic rods (311) inside. One end of the first telescopic rod (311) is fixed inside the first protection device housing (313), and the other end can be telescoped like an umbrella support rod;

[0068] The first foldable cover (312) is in the shape of a ring as a whole, with both ends fixed on the first telescopic rod (311); the extension or contraction of the first telescopic rod (311) drives the first foldable cover (312) to unfold or contract, so as to complete the opening and closing of the first protection device (31); meanwhile, holes and annular grooves are formed in the inner side of the hub (12) of the wheel (1) and the first protection device (31) at the same axial position. When the first protection device (31) is opened, it is used to fix the first telescopic rod (311) and the first foldable cover (312).

[0069] Among them, under the land driving condition, the first telescopic rod (311) extends, the first foldable cover (312) unfolds, the first protection device (31) is in an open state, and the first telescopic rod (311) and the first foldable cover (312) are respectively inserted into the reserved holes and annular grooves on the hub (12) to prevent sand and gravel from entering the inside of the wheel and damaging the rotor (6), as Figures 6-7 shown;

[0070] Under the air flight condition, the first telescopic rod (311) drives the first foldable cover (312) to retract into the first protection device housing (313) at the axis center, the first protection device (31) is closed, and the influence on the aerodynamic characteristics of the rotor is minimized.

[0071] Among them, the second protection device (32) has the same structure as the first protection device (31), and is also a disc-shaped structure with a hollow center. There are 3 second telescopic rods inside. One end of the second telescopic rod is fixed inside the second protection device housing, and the other end can be telescopic like an umbrella support rod;

[0072] The second foldable cover is in the shape of a ring as a whole, with both ends fixed on the second telescopic rod; the extension or contraction of the second telescopic rod drives the second foldable cover to unfold or contract, so as to complete the opening and closing of the second protection device (32); meanwhile, holes and annular grooves are formed in the inner side of the hub (12) of the wheel (1) and the second protection device (32) at the same axial position. When the second protection device (32) is opened, it is used to fix the second telescopic rod and the second foldable cover;

[0073] Under the land driving condition, the second telescopic rod extends, the second foldable cover unfolds, the second protection device (32) is in an open state, and the second telescopic rod and the second foldable cover are respectively inserted into the reserved holes and annular grooves on the hub (12) to prevent sand and gravel from entering the inside of the wheel and damaging the rotor (6);

[0074] Under the air flight condition, the second telescopic rod drives the second foldable cover to retract into the second protection device housing at the axis center, the second protection device (32) is closed, and the influence on the aerodynamic characteristics of the rotor is minimized.

[0075] Among them, the methods and devices for realizing a dual-purpose tire by jointly coordinating a clutch, a speed reducer, and a motor to separately drive a propeller or separately drive wheels are all within the protection scope of the present invention.

[0076] Among them, the land-air dual-purpose tire that directly drives a propeller by a motor and drives wheels by a speed reducer is within the protection scope of the present invention.

[0077] Among them, the structures for protecting a rotor / propeller by adding a retractable protection structure that contracts and expands in the radial direction on both sides of the rotor / propeller are all within the protection scope of the present invention.

[0078] Among them, the design methods and structures for reducing the axial occupied space of the power system by installing the blades of the rotor / propeller on the clutch housing are all within the protection scope of the present invention.

[0079] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as within the protection scope of the present invention.

Claims

1. A propeller tire for both land and air use, characterized in that: The land-air dual-purpose propeller tire comprises: a wheel (1), a motor (2), a planetary gear reducer (4), a first clutch (5), a rotor (6), a second clutch (7), a motor output hollow shaft (8), a suspension connecting shaft (9), and an output shaft (10); The motor (2) is used to match with the first clutch (5), the second clutch (7), and the planetary gear reducer (4) for transmission; the rotor of the motor (2) is connected to the motor output hollow shaft (8); The first clutch (5) is located on the axial left side of the motor (2), and the second clutch (7) and the rotor (6) are located on the axial right side of the motor (2); The suspension connecting shaft (9) is sleeved with a planetary gear reducer (4), a first clutch (5), a motor (2), a second clutch (7), and a motor output hollow shaft (8); the left end of the suspension connecting shaft (9) is fixedly connected to the output shaft (10); The first clutch (5) comprises: a first clutch friction plate group (51), a first clutch steel plate group (52), and a first clutch housing (53); the first clutch housing (53) is coaxially fixedly connected to the output shaft (10); the output shaft (10) is also coaxially fixedly connected to the spoke (13) of the wheel (1); The first clutch (5) and the second clutch (7) are both multi-plate clutches; the rotor (6) and the housing of the second clutch (7) are an integrated structure, the blades of the rotor (6) are evenly distributed on the circumference of the housing of the second clutch (7), and the integrated structure is coaxially fixedly connected to the motor output hollow shaft (8); The planetary gear reducer (4) comprises: an outer gear ring (42), planetary wheels (43), a sun gear (44) and a planet carrier (45); the axis of the planet carrier (45) is a hollow axis and is coaxially fixedly connected to the rotor of the motor (2); the first clutch (5) is coaxially fixed to the outer gear ring (42); the outer circle of the outer gear ring (42) is provided with a groove corresponding to the first clutch steel plate group (52), which can limit the circumferential position of the first clutch steel plate group (52); the sun gear (44) is a hollow cylindrical structure and is coaxially fixedly connected to the suspension connecting shaft (9) through a spline as a non-rotating component.

2. The land and air dual-purpose propeller tire according to claim 1, characterized in that: Under the condition of land driving, the first clutch (5) is in the engaged state and the second clutch (7) is in the disengaged state; the motor (2) is energized, the rotor drives the shaft of the planetary carrier (45) to rotate, the sun gear (44) is fixed, the outer gear ring (42) rotates, and drives the first clutch steel plate group (52). At this time, the first clutch (5) is engaged, the first clutch steel plate group (52) transmits power to the first clutch friction plate group (51), drives the first clutch housing (53) to rotate, and the first clutch housing (53) drives the coaxially connected output shaft (10) to rotate, thereby the motor (2) transmits power to the output shaft (10), and then the output shaft (10) transmits power to the spokes (13), thereby driving the wheel (1) to rotate; at this time, the second clutch (7) is in the disengaged state, its second clutch friction plate group (71) is separated from the second clutch steel plate group (72), there is no power transmission, and the rotor (6) does not rotate.

3. The land and air dual-purpose propeller tire according to claim 2, characterized in that: In the flying condition, the first clutch (5) is in a disengaged state, and the second clutch (7) is in an engaged state; the motor (2) is energized, the rotor drives the motor output hollow shaft (8) to rotate, and the second clutch (7) is engaged to drive the rotor (6) to rotate; at this time, the first clutch (5) is disengaged, and the power cannot be transmitted to the wheel (1), the rotor (6) rotates while the wheel (1) does not rotate, thereby preventing the rotation of the wheel (1) from bringing about a large rotational inertia, and the wheel (1) does not rotate and can also serve as a duct to cooperate with the rotor (6) to provide additional lift to the propulsion system.

4. The land and air dual-purpose propeller tire according to claim 1, characterized in that: The wheel (1) comprises a tire (11), a wheel hub (12), and a wheel spoke (13); the wheel (1) is used as a wheel when traveling on land, and is used as a duct to increase additional thrust for a propulsion device when flying in the air.

5. The land-air dual-purpose propeller tire according to claim 1, characterized in that: The motor (2) is a radial flux motor or an axial flux motor.

6. The land-air dual-purpose propeller tire according to claim 1, characterized in that: The housing of the motor (2) and the motor output hollow shaft (8) and the shaft of the planet carrier (45) are all dynamically sealed.

7. The land-air dual-purpose propeller tire according to claim 1, characterized in that: The land-air dual-purpose propeller tire further comprises a protection device (3), wherein the protection device (3) comprises: a first protection device (31) and a second protection device (32); The first protection device 31 is located between the rotor (6) and the motor (2), and is connected to the motor output hollow shaft (8) using a bearing; the second protection device 32 is located on the right side of the rotor (6), and is connected to the suspension connecting shaft (9) using a bearing, thereby ensuring that the first protection device (31) and the second protection device (32) can rotate synchronously with the wheel (1) or not rotate when they are deployed.

8. The land-air dual-purpose propeller tire according to claim 7, characterized in that: The first protection device (31) comprises: a first telescopic rod (311), a first foldable cover (312), and a first protection device shell (313); the second protection device (32) comprises: a second telescopic rod, a second foldable cover, and a second protection device shell; The first protection device (31) is a circular pancake-shaped structure with a hollow center, and has three first telescopic rods (311) inside. One end of the first telescopic rod (311) is fixed inside the first protection device housing (313), and the other end can be telescoped like an umbrella support rod. The first foldable cover (312) is in the form of a circular ring, with both ends fixed to the first telescopic rod (311); the first telescopic rod (311) is extended or shortened to drive the first foldable cover (312) to expand or contract, so as to complete the opening and closing of the first protection device (31); at the same time, a hole and an annular groove are provided on the inner side of the wheel hub (12) of the wheel (1) at the same axial position as the first protection device (31), and are used to fix the first telescopic rod (311) and the first foldable cover (312) when the first protection device (31) is opened.

9. The motor-driven tire-propeller integrated power device according to claim 8, characterized in that: Under land driving conditions, the first telescopic rod (311) is extended, the first foldable cover (312) is unfolded, the first protection device (31) is in an open state, and the first telescopic rod (311) and the first foldable cover (312) are respectively inserted into a hole and an annular groove reserved on the wheel hub (12) to prevent sand and stones from entering the wheel and causing damage to the rotor (6); In the flying condition, the first telescopic rod (311) drives the first foldable cover (312) to be retracted into the first protection device housing (313) at the axis center, and the first protection device (31) is closed, minimizing the impact on the aerodynamic characteristics of the rotor.

10. The motor-driven tire-propeller integrated power device according to claim 9, characterized in that: The second protection device (32) has the same structure as the first protection device (31), and is also a round pancake-shaped structure with a hollow center. Three second telescopic rods are arranged inside the second protection device. One end of the second telescopic rod is fixed in the second protection device housing, and the other end can be telescoped like an umbrella support rod. The second foldable cover is a circular ring as a whole, and both ends are fixed on the second telescopic rod; The second telescopic rod is extended or shortened to drive the second foldable cover to expand or contract, so as to complete the opening and closing of the second protection device (32); at the same time, a hole and an annular groove are formed on the inner side of the wheel hub (12) of the wheel (1) at the same axial position as the second protection device (32), and are used to fix the second telescopic rod and the second foldable cover when the second protection device (32) is opened; Under land driving conditions, the second telescopic rod is extended, the second foldable cover is unfolded, the second protective device (32) is in an open state, and the second telescopic rod and the second foldable cover are respectively inserted into the hole and the annular groove reserved on the wheel hub (12) to prevent sand and stones from entering the wheel and causing damage to the rotor (6); In the flying condition, the second telescopic rod drives the second foldable cover to be retracted into the second protection device shell at the axis center, and the second protection device (32) is closed to minimize the impact on the aerodynamic characteristics of the rotor.

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