Aerocar power device based on hub motors

Abstract

The invention discloses a hovercar power device based on hub motors, and belongs to the field of hovercars. Ground driving and air flying are integrated into one power device, and mode switching is carried out by changing working modes of the device. Wherein independent driving motors are adopted for wheel traveling driving and propeller flying driving, a wheel edge motor of the wheel traveling driving is installed on a frame, propeller driving is achieved through a hub motor installed on a supporting shaft, and wheels and propellers share a hollow supporting shaft to achieve rotating supporting. And a telescopic hydraulic structure for wheel reversing and a vibration reduction suspension structure are designed in an integrated manner. The overall design structure is compact, the power device structure is simplified, and the unsprung mass of the automobile is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the field of flying cars, and in particular relates to a flying car power device based on a wheel hub motor. Background Art

[0002] Flying cars are an effective combination of cars and aircraft, which can travel on the ground and fly in the sky. The emergence of flying cars can effectively solve problems such as ground traffic congestion, but due to technical complexity and other reasons, flying cars have not yet been widely used, but their prospects are bright.

[0003] The flying (take-off and landing and navigation) power unit of a flying car is generally composed of a propeller or a ducted fan, while the car (driving) power unit is basically the same as that of a general car. At present, flying cars can be divided into two categories according to the configuration characteristics of their power units. One type is the independent type, that is, the car power unit and the flight power unit are independent mechanisms, and the car wheels do not need to change their position when switching between car mode and flight mode. However, since the car power unit and the flight power unit in the independent flying car operate independently, the structure of the whole vehicle is larger and the weight of the vehicle is also heavier. The other type is the conversion type, in which the car power unit and the flight power unit are generally integrated into a power system (wheel system), and the position of the car wheels changes when switching between car mode and flight mode. The conversion type flying car has the advantages of small structure volume and light weight, and has a good development trend.

[0004] At present, the wheel system of transformable flying cars generally integrates components such as drive motors, reducers and clutches, which leads to a large unsprung mass of the car, which easily causes problems with poor handling and stability. Summary of the invention

[0005] Technical issues to be solved:

[0006] In order to avoid the shortcomings of the prior art, the present invention provides a flying car power device based on a wheel hub motor, which is a transformable flying car power device, in which the wheel driving and propeller flying drive use independent drive motors, the wheel side motor for the wheel driving is installed on the frame, the propeller drive is realized by the wheel hub motor installed on the support shaft, the wheel and the propeller share a hollow support shaft for rotation support, and the telescopic hydraulic structure for wheel reversing is integrated with the vibration-damping suspension structure. The overall design structure is compact, the power device structure is simplified, and the unsprung mass of the car is effectively reduced.

[0007] The technical solution of the present invention is: a flying car power device based on a wheel hub motor, comprising: a wheel hub, an inner shaft, a support shaft, a wheel hub motor, a propeller, a wheel side motor, a mounting frame and a telescopic vibration reduction mechanism;

[0008] The outer end of the inner shaft is coaxially connected to the wheel hub, and the inner end of the inner shaft is connected to the output shaft of the wheel motor through a universal joint; the wheel motor is fixed to the frame, and its output shaft is arranged horizontally, and the wheel motor is used to provide power for the rotation of the wheel hub in the driving mode;

[0009] The support shaft is coaxially mounted on the outer diameter of the inner shaft, and the two are rotatably connected; the wheel hub motor is a hollow motor, coaxially mounted on the outer diameter of the support shaft, and its inner ring is tightly matched with the outer diameter wall of the support shaft; the propeller is mounted on the outer diameter of the wheel hub motor, and is tightly matched with the outer ring of the wheel hub motor; the propeller is located in the inner cavity of the wheel hub, and is used to provide flight propulsion in flight mode; the wheel hub motor provides power for the rotation of the propeller;

[0010] The mounting frame is fixed to the vehicle frame, and the end of the mounting frame facing the wheel hub is hinged to the inner end of the support shaft, and the top end is hinged to one end of the telescopic vibration reduction mechanism; the other end of the telescopic vibration reduction mechanism is hinged to the upper edge of the inner end of the support shaft; the telescopic vibration reduction mechanism is used for switching the flight mode and driving mode positions of the power unit, and for vibration reduction in the driving mode.

[0011] A further technical solution of the present invention is: in the driving mode, the wheel hub is in a vertical state, the wheel-side motor output shaft, the universal joint and the inner shaft are horizontally coaxial, and the telescopic vibration damping mechanism is in a retracted state; in the flight mode, the wheel hub is in a horizontal state, the wheel-side motor output shaft is perpendicular to the inner shaft, and the two ends of the universal joint are vertical, and the telescopic vibration damping mechanism is in an extended state.

[0012] A further technical solution of the present invention is: a connecting flange is provided at one end of the inner shaft, which is used to be fixedly connected to the wheel hub by bolts; the middle part of the inner shaft is an optical shaft section, which is used to install the inner bearing and the support shaft for rotational connection; the other end of the inner shaft is a prismatic structure, which is used to be fixed with the universal joint anti-rotation sleeve.

[0013] A further technical solution of the present invention is that a brake disc is coaxially provided at one end of the inner shaft close to the connecting flange for installing a brake caliper assembly.

[0014] A further technical solution of the present invention is: the support shaft body is a hollow shaft structure, the inner diameter wall of one end of which is tightly matched with the outer ring of the inner bearing, and the outer diameter wall of this end is sleeved with a hub motor, which is rotatably connected to the mounting part of the propeller through the hub motor; the other end is provided with a hinge shaft and a first hinge hole, the two hinge shafts are horizontally arranged, symmetrically arranged on both sides of the end of the support shaft, the axis of the hinge shaft intersects with the axis of the support shaft vertically, and is used to be hinged with the mounting frame; the first hinge hole is located at the upper edge of the end of the support shaft, parallel to the hinge shaft, and is used to be hinged with the telescopic vibration reduction mechanism through a pin shaft.

[0015] A further technical solution of the present invention is: the mounting frame includes a vertical rod and two cross rods; the vertical rod is vertically fixed to the frame; the two cross rods are symmetrically arranged and vertically fixed to the bottom end of the vertical rod on the side facing away from the frame; a through hole is provided at the end of the cross rod for articulating with the hinge shaft of the support shaft; a connecting ear is provided at the upper end of the vertical rod, and the connecting ear is provided with a second hinge hole parallel to the through hole of the cross rod, for passing the pin shaft through which it is articulated with the telescopic vibration damping mechanism.

[0016] A further technical solution of the present invention is: the propeller includes a mounting shaft and a plurality of blades evenly distributed and fixed on the outer diameter of the circumference of the mounting shaft; the mounting shaft serves as the mounting part of the propeller, and a mounting hole is provided along its axis, and the inner wall of the mounting hole is tightly matched with the outer ring of the hub motor.

[0017] A further technical solution of the present invention is: the telescopic vibration reduction mechanism includes a telescopic hydraulic cylinder and a vibration reduction spring coaxially mounted on the outside of the hydraulic cylinder; when the hydraulic cylinder is extended, it pushes the upper edge of the inner end of the support shaft to flip to the horizontal around the hinge between the mounting frame and the support shaft, and the wheel hub is parallel to the ground; when the hydraulic cylinder is retracted and reset, it pulls the support shaft to flip and reset, and the wheel hub is perpendicular to the ground. At this time, the vibration reduction spring and the two ends of the hydraulic cylinder elastically offset each other, which plays a vibration reduction role when the wheel is in a driving state.

[0018] Beneficial Effects

[0019] The beneficial effects of the present invention are as follows: Compared with the existing technical solutions for transformable flying cars, the power device for a flying car based on a wheel hub motor described in the present invention cancels the clutch design, and the wheel side motor integrated with the drive motor and the reducer is fixed on the frame as a whole, forming a wheel side motor drive mode, thereby reducing the weight of the wheel system. A wheel hub motor coaxially mounted on the support shaft is used to provide power for the propeller coaxially mounted on the outer ring of the wheel hub motor. In the vehicle driving mode, the output shaft of the wheel side motor works, driving the inner shaft and then driving the wheel hub to rotate, thereby realizing the wheel driving function; in the flight mode, the wheel flips to a horizontal state, and the wheel hub motor works, directly driving the propeller to rotate, thereby generating flight thrust. This structural form changes the layout of the power device of the traditional transformable flying car, and avoids the problems of complex structure and large unsprung mass of the vehicle caused by the existing traditional technical solutions integrating components such as the drive motor, the reducer and the clutch in the wheel system.

[0020] In the present invention, the wheel hub and the propeller share a hollow support shaft, the interior of the support shaft is connected to the inner shaft through an inner bearing, the exterior of the support shaft serves as a fixed shaft of the hub motor, and is tightly connected to the propeller through the rotating outer shell of the hub motor, making the structure more compact and thereby reducing the unsprung weight.

[0021] In the present invention, the telescopic hydraulic structure for wheel switching and the vibration-damping suspension structure are integrated into a telescopic vibration-damping mechanism, wherein the telescopic hydraulic cylinder and the vibration-damping spring share a central axis, the telescopic hydraulic cylinder is inside, and the vibration-damping spring is outside, which simplifies the structure and reduces the unsprung weight.

[0022] In the vehicle driving mode, the present invention controls the rotation speed of the output shaft of the wheel motor in the four power devices through the vehicle control system, so that the vehicle can turn and turn around on the spot by changing the wheel rotation speed, thereby eliminating the traditional steering mechanism design and simplifying the structure; in the flight mode, the control system controls the rotation speed of the wheel hub motor in the four power devices, thereby controlling the rotation speed of the four propellers to realize the flight function. The wheel motor and the wheel hub motor can control their work independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structural appearance diagram of the power device of the embodiment of the present invention (driving mode);

[0024] Figure 2 The figure is the overall structural appearance diagram of the power device of the embodiment of the present invention (flight mode);

[0025] Figure 3 Schematic diagram of the internal structure of the power device of an embodiment of the present invention (driving mode);

[0026] Figure 4 for Figure 3 Schematic diagram of the installation relationship of some components in the middle;

[0027] Figure 5 This is a schematic diagram of the internal structure of the power device of an embodiment of the present invention (flight mode);

[0028] Figure 6 for Figure 5 Schematic diagram of the installation relationship of some components in the middle;

[0029] Figure 7 is a schematic diagram of the hub structure in an embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the inner shaft structure in an embodiment of the present invention;

[0031] Fig. 9 is a schematic structural diagram of a brake caliper assembly in an embodiment of the present invention;

[0032] Fig.10 is a schematic diagram of the support shaft structure in an embodiment of the present invention;

[0033] Fig.11 Schematic diagram of the telescopic vibration reduction mechanism in an embodiment of the present invention;

[0034] Fig.12is a schematic diagram of the structure of a mounting frame in an embodiment of the present invention;

[0035] Fig.13 Schematic diagram of the structure of a universal coupling in an embodiment of the present invention;

[0036] Fig.14 Schematic diagram of the propeller structure in an embodiment of the present invention.

[0037] Explanation of the accompanying drawings: 1. tire, 2. wheel hub, 3. bolt, 4. inner shaft, 401. connecting flange, 402. brake disc, 403. optical axis segment, 5. brake caliper assembly, 501. mounting ring, 502. first brake caliper, 503. second brake caliper, 6. hub motor, 7. inner bearing, 8. support shaft, 801. articulated shaft, 802. first articulated hole, 9. telescopic vibration reduction mechanism, 901. hydraulic cylinder, 902. vibration reduction spring, 10. mounting frame, 101. vertical rod, 102. horizontal rod, 11. wheel-side motor, 12. universal joint, 13. propeller. DETAILED DESCRIPTION

[0038] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1 , 2 This embodiment provides a flying car power device based on a hub motor, the purpose of which is to provide a solution different from the power device of the existing transformable flying car, so as to simplify the structure of the existing power device and reduce the unsprung mass of the flying car. It has the characteristics of compact structure and light unsprung mass of the car, which is beneficial to the control and stability of the car.

[0041] In this embodiment, four sets of flying car power devices based on wheel hub motors are assembled and installed on the vehicle body. Figure 1 As shown, when the flying car is in the ground driving mode, the wheel hub 2 in the power device is in a vertical state, perpendicular to the ground, and its working state is consistent with the wheels in general vehicles. Figure 2As shown, when the flying car is in the vertical take-off and landing and aerial navigation mode, the wheel hub 2 in the power device is in a horizontal state, parallel to the ground, and the four wheels are used in conjunction with each other to provide power through the rotation of the propeller 13.

[0042] See also Figure 1-6 The flying car power device based on the hub motor provided in this embodiment includes a tire 1, a wheel hub 2, an inner shaft 4, a support shaft 8, a telescopic vibration reduction mechanism 9, a mounting frame 10, a wheel side motor 11, a hub motor 6 and a propeller 13.

[0043] See also Figure 7 A tire 1 is mounted on the outer diameter of the wheel hub 2. The outer side of the wheel hub 2 is a spoke structure. The center of the spoke structure is a wheel hub mounting plate. The wheel hub mounting plate is fixedly connected to the outer end of the inner shaft 4 by multiple bolts 3. Specifically, the inner shaft 4 is coaxial with the wheel hub 2, located inside the wheel hub 2, and is used to drive the wheel hub 2 to rotate. Figure 8 As shown, the outer side of the inner shaft 4 is a connecting flange 401 structure, and the connecting flange 401 has five threaded holes evenly distributed around the circumference. Five bolts 3 are passed through the connecting hub mounting plate and the connecting flange 401 to realize the fixed connection between the inner shaft 4 and the hub 2. The middle part of the inner shaft 4 is an optical shaft section 403, and the inner bearing 7 is coaxially sleeved on the optical shaft section 403. The inner ring of the inner bearing 7 is tightly matched with the optical shaft section 403 of the inner shaft 4, and the inner shaft 4 is used to realize the rotation connection between the inner shaft 4 and the support shaft 8. The inner end of the inner shaft 4, that is, the end away from the connecting flange 401, is a quadrangular prism structure, which is used to be fixed with the universal joint 12 for anti-rotation sleeve connection.

[0044] The universal joint 12 is used as a driving connection member, one end of which is connected to the output shaft of the wheel side motor 11, and the other end is connected to the quadrangular prism end of the inner shaft 4. Fig.13 As shown, the end of the universal joint 12 facing the inner shaft 4 has a square inner concave portion matching the quadrangular prism of the inner shaft 4, which is used for the sleeve connection and anti-rotation fixation of the two. The wheel motor 11 is fixed to the frame and is a power assembly integrating a drive motor and a reducer. The output shaft of the wheel motor 11 is arranged horizontally to provide power for the rotation of the wheel hub 2 in the driving mode. The wheel motor 11 is electrically connected to the vehicle control system and its operation is controlled by the vehicle control system.

[0045] See also Figure 3 , 10, 14, the support shaft 8 is a hollow sleeve structure, one end of which is cylindrical and the other end is a special-shaped structure. The cylindrical end of the support shaft 8 faces the inner shaft 4 and is coaxially sleeved on the inner side of the inner shaft 4, that is, the side facing away from the connection flange 401 of the inner shaft 4. The inner diameter wall of the support shaft 8 is tightly matched with the outer ring of the inner bearing 7. The propeller 13 is coaxially sleeved on the support shaft 8, and the propeller 13 and the support shaft 8 are rotatably connected through the hub motor 6. Specifically, the outer diameter wall of the cylindrical end of the support shaft 8 is installed with the hub motor 6. The hub motor 6 is a hollow motor, with the support shaft 8 as the mounting shaft, its inner ring is tightly matched with the outer diameter wall of the support shaft 8, and its outer ring is installed with the propeller 13. The propeller 13 includes a mounting shaft and a plurality of blades evenly distributed and fixed on the outer diameter of the circumference of the mounting shaft. The mounting shaft serves as the mounting portion of the propeller 13, and a mounting hole is provided along its central axis. The inner wall of the mounting hole of the central axis of the propeller 13 is tightly matched with the outer ring (i.e., the rotating shell) of the hub motor 6. The propeller 13 is located in the inner cavity of the wheel hub 2 and is used to provide flight propulsion in flight mode. The power for the propeller 13 is directly provided by the wheel hub motor 6, and the propeller 13 is driven to rotate by the outer ring of the wheel hub motor 6. The wheel hub motor 6 is electrically connected to the vehicle control system and is controlled by the control system.

[0046] See also Figure 3 , 9 In order to achieve wheel braking, a brake disc 402 is coaxially arranged at one end of the inner shaft 4 close to the connecting flange 401 for mounting the brake caliper assembly 5. Fig. 9 As shown, the brake caliper assembly 5 includes a mounting ring 501, a first brake caliper 502 and a second brake caliper 503. The first brake caliper 502 and the mounting ring 501 are an integrated structure. The mounting ring 501 is coaxially mounted on the inner shaft 4, located on the inner side of the brake disc 402 and the outer side of the support shaft 8, and is fixedly connected to the outer end surface of the cylindrical end of the support shaft 8. The first brake caliper 502 is matched with the second brake caliper 503 to clamp the brake disc 402 in the brake slot therebetween, and the brake is braked by friction generated by the brake caliper assembly 5 and the brake disc 402. The brake caliper assembly 5 is controlled by the vehicle control system.

[0047] See also Figure 3 , 4 10. The special-shaped end of the support shaft 8 is provided with an articulation shaft 801 and a first articulation hole 802. The two articulation shafts 801 are arranged horizontally and symmetrically on both sides of the end of the support shaft 8. The axis of the articulation shaft 801 intersects the axis of the support shaft 8 vertically. The articulation shaft 801 is used to articulate with the horizontal end of the mounting frame 10. The first articulation hole 802 of the support shaft 8 is located at the upper edge of the end of the support shaft 8, parallel to the articulation shaft 801, and is used to articulate with one end of the telescopic vibration reduction mechanism 9 through a pin.

[0048] See also Figure 1-6, 11-12, the mounting frame 10 is fixed to the frame, and the mounting frame 10 includes a vertical rod 101 and two cross rods 102. The vertical rod 101 is a V-shaped structure, and the V-shaped opening is vertically fixed to the frame downward. The two cross rods 102 are symmetrically arranged and vertically fixed to the bottom end of the V-shaped opening of the vertical rod 101 on the side facing away from the frame. A through hole is provided at the outer end of the cross rod 102, which is used to cooperate with the hinge shaft 801 of the support shaft 8 for hinge connection. A connecting ear is provided on the same side of the upper end of the vertical rod 101 and the cross rod 102, and the connecting ear is provided with a second hinge hole parallel to the through hole of the cross rod 102, which is used to pass through the pin shaft and hinge with the other end of the telescopic vibration damping mechanism 9.

[0049] See also Figure 1-6 , Fig.11 The telescopic vibration damping mechanism 9 includes a telescopic hydraulic cylinder 901 and a vibration damping spring 902 coaxially sleeved on the outside of the hydraulic cylinder 901. The hydraulic cylinder 901 is connected to the hydraulic system and is controlled by the vehicle control system. The telescopic end of the hydraulic cylinder 901 is hinged to the first hinge hole 802 of the support shaft 8, and the fixed end of the hydraulic cylinder 901 is hinged to the second hinge hole of the mounting frame 10. The axis of the telescopic vibration damping mechanism 9 is coplanar with the axis of the support shaft 8. When the telescopic end of the hydraulic cylinder 901 is extended, it pushes the upper edge of the inner end of the support shaft 8 to flip around the hinge axis 801 of the mounting frame 10 and the support shaft 8 to the horizontal, so that the wheel hub 2 is parallel to the ground, and the power device is switched to the flight mode; when the hydraulic cylinder 901 is retracted and reset, it pulls the support shaft 8 to flip and reset, so that the wheel hub 2 is perpendicular to the ground, and the power device is switched to the driving mode. At this time, the vibration damping spring 902 is in a contracted state, and elastically offsets the two ends of the hydraulic cylinder 901, which plays a vibration damping role for the wheel in the driving state.

[0050] See also Figure 1 , 3 4. In driving mode, the wheel is in a vertical state as a whole, the tire 1 touches the ground, and the output shaft of the wheel motor 11, the universal joint 12, and the inner shaft 4 are coaxial. At this time, the output speed of the wheel motor 11 is controlled, and the universal joint 12 is driven by the output shaft of the wheel motor to rotate, thereby driving the inner shaft 4 to rotate, and then driving the wheel hub 2 to rotate to realize wheel rotation. In driving mode, the propeller 13 does not move. The vehicle turns and turns on the spot are completed by controlling the wheel speeds of the four power devices.

[0051] See also Figure 2 , 5 6. In the flight mode, under the push of the telescopic vibration reduction mechanism 9, the support shaft 8 turns around the hinge shaft 801 between the mounting frame 10 and the support shaft 8, so that the wheel is in a horizontal state as a whole. At this time, the two ends of the universal joint 12 are in a vertical state, and the wheel side motor 11 does not work. By controlling the rotation of the wheel hub motor 6, its rotating shell drives the propeller 13 to rotate, thereby generating flight propulsion. By controlling the speed of the propeller 13 in the four power units, the vehicle can complete actions such as climbing, cruising, descending, turning and turning around in place.

[0052] The present invention integrates ground driving and air flying modules into one power device, which is switched by changing the working mode of the device. It has a compact structure, diverse functions, and the characteristics of light unsprung mass of the automobile, which is beneficial to automobile control and stability.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A flying car power device based on a wheel hub motor, characterized in that: include: Hub, inner shaft, support shaft, hub motor, propeller, wheel side motor, mounting frame and telescopic vibration reduction mechanism; The outer end of the inner shaft is coaxially connected to the wheel hub, and the inner end of the inner shaft is connected to the output shaft of the wheel motor through a universal joint; the wheel motor is fixed to the frame, and its output shaft is arranged horizontally, and the wheel motor is used to provide power for the rotation of the wheel hub in the driving mode; The support shaft is coaxially mounted on the outer diameter of the inner shaft, and the two are rotatably connected; the wheel hub motor is a hollow motor, coaxially mounted on the outer diameter of the support shaft, and its inner ring is tightly matched with the outer diameter wall of the support shaft; the propeller is mounted on the outer diameter of the wheel hub motor, and is tightly matched with the outer ring of the wheel hub motor; the propeller is located in the inner cavity of the wheel hub, and is used to provide flight propulsion in the flight mode; the wheel hub motor provides power for the rotation of the propeller; The mounting frame is fixed to the vehicle frame, and the end of the mounting frame facing the wheel hub is hinged to the inner end of the support shaft, and the top end is hinged to one end of the telescopic vibration reduction mechanism; the other end of the telescopic vibration reduction mechanism is hinged to the upper edge of the inner end of the support shaft; the telescopic vibration reduction mechanism is used for switching the flight mode and driving mode positions of the power unit, and for vibration reduction in the driving mode.

2. The flying car power device based on the wheel hub motor according to claim 1 is characterized in that: In the driving mode, the wheel hub is in a vertical state, the output shaft of the wheel-side motor, the universal joint, and the inner shaft are horizontally coaxial, and the telescopic vibration damping mechanism is in a retracted state; in the flight mode, the wheel hub is in a horizontal state, the output shaft of the wheel-side motor is perpendicular to the inner shaft, the two ends of the universal joint are vertical, and the telescopic vibration damping mechanism is in an extended state.

3. The flying car power device based on the wheel hub motor according to claim 1 is characterized in that: One end of the inner shaft is provided with a connecting flange for fixing with the wheel hub by bolts; the middle part of the inner shaft is a smooth shaft section for installing the inner bearing and the support shaft for rotation connection; the other end of the inner shaft is a prismatic structure for fixing with the universal joint anti-rotation sleeve.

4. The flying car power device based on the wheel hub motor according to claim 3 is characterized in that: A brake disc is coaxially arranged at one end of the inner shaft close to the connecting flange for installing a brake caliper assembly.

5. The flying car power device based on the wheel hub motor according to claim 3 is characterized in that: The support shaft body is a hollow shaft structure, and the inner diameter wall at one end thereof is tightly matched with the outer ring of the inner bearing, and the outer diameter wall of this end is sleeved with a hub motor, which is rotatably connected to the mounting part of the propeller through the hub motor; an articulated shaft and a first articulated hole are provided at the other end of the support shaft, and the two articulated shafts are horizontally arranged and symmetrically arranged on both sides of the end of the support shaft, and the axis of the articulated shaft intersects the axis of the support shaft vertically, and is used to be articulated with the mounting frame; the first articulated hole is located at the edge of the end of the support shaft, parallel to the articulated shaft, and is used to be articulated with the telescopic vibration reduction mechanism through a pin shaft.

6. The flying car power device based on the wheel hub motor according to claim 5 is characterized in that: The mounting frame includes a vertical rod and two cross rods; the vertical rod is vertically fixed to the frame; the two cross rods are symmetrically arranged and vertically fixed to the bottom end of the vertical rod on the side facing away from the frame; the outer end of the cross rod is provided with a through hole for articulating with the hinge shaft of the support shaft; the upper end of the vertical rod is provided with a connecting ear piece, and the connecting ear piece is provided with a second hinge hole parallel to the through hole of the cross rod, which is used to pass through the pin shaft and articulate with the telescopic vibration damping mechanism.

7. The flying car power device based on the wheel hub motor according to claim 5 is characterized in that: The propeller comprises a mounting shaft and a plurality of blades evenly distributed and fixed on the outer diameter of the circumference of the mounting shaft; the mounting shaft serves as the mounting part of the propeller, and a mounting hole is provided along its axis, and the inner wall of the mounting hole is tightly matched with the outer ring of the hub motor.

8. The flying car power device based on the wheel hub motor according to claim 1 is characterized in that: The telescopic vibration reduction mechanism comprises a telescopic hydraulic cylinder and a vibration reduction spring coaxially mounted on the outside of the hydraulic cylinder; when the hydraulic cylinder is extended, it pushes the upper edge of the inner end of the support shaft to flip to the horizontal around the hinge between the mounting frame and the support shaft, and the wheel hub is parallel to the ground; when the hydraulic cylinder is retracted and reset, it pulls the support shaft to flip and reset, and the wheel hub is perpendicular to the ground. At this time, the vibration reduction spring and the two ends of the hydraulic cylinder elastically offset each other, which plays a vibration reduction role in the driving state of the wheel.

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