A propeller and a wheel propeller assembly of an aircraft or a vehicle using the propeller

Abstract

The present invention relates to the technical field of aircraft, and more specifically to a propeller and a wheel-propeller assembly of an aircraft vehicle using the propeller. The propeller uses a rotary telescopic propeller, which includes blades, a propeller shaft, and a chute sleeve assembled on the aircraft and driven to rotate by a driving mechanism. The top end of the propeller shaft is fixedly assembled and connected to the blades. The middle part of the propeller shaft is rotatably and slidably sleeved in the chute sleeve, so that the propeller shaft makes forward and reverse rotational lifting movements relative to the chute sleeve. The blades adopt folding blades, which include two sub-blades symmetrically arranged on both sides of the top end of the propeller shaft, a main blade pinned to the outer ends of the sub-blades, and torsion springs for folding and contracting the propeller, with both ends elastically connecting the sub-blades and the main blade respectively. When the propeller shaft rotates, when the centrifugal force of the main blade overcomes the torsion of the torsion spring, the blades can automatically rotate and unfold. Compared with the prior art, the propeller of the present invention adopts a rotary telescopic type, which is convenient for reducing the volume and is suitable for folding blades, enabling them to unfold by inertial rotation.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft, and more particularly to a propeller and a wheel-propeller assembly of an aircraft vehicle using the propeller. Background Art

[0002] Existing aircraft or wheeled mobile platforms all have their limitations. Although wheeled mobile platforms have certain advantages in terms of load-carrying capacity and transportation capacity, they have high requirements for road conditions. Due to environmental restrictions, current ground roads are complex and congested, resulting in low traffic efficiency. Although the flight of an aircraft is not restricted by the ground, it has poor adaptability to takeoff and landing environments. Currently, there is no mobile transportation device that can well address both of these problems.

[0003] The existing technical solution is to directly insert the propeller into the wheel. The disadvantages of this solution are that the propeller has a small size, limited lift, low efficiency, and weak load capacity; or the wheel and the propeller are not integrated at all, and only four wheels are simply added under the aircraft. The disadvantages of this solution are: it occupies a large horizontal space in the land state, and there are safety hazards for the propeller during ground travel. Secondly, the mechanism is more complex and the mechanical stability is poor. And more power mechanisms are required, and the load-bearing capacity is weak.

[0004] Currently, most propellers do not need to be telescopic, or a telescopic structure is also adopted to make it as hidden as possible when not in use to reduce space, but its telescopic structure is complex or unreasonable.

[0005] Furthermore, even some propellers can be folded, but their structures still need to be very large to have sufficient lift, and they cannot be hidden inside the hub of the aircraft wheel after folding. Summary of the Invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and provide a rotary telescopic propeller with a simple structure and a simple working principle. Further, the blades of the rotary telescopic propeller can be designed to be foldable, and further, the rotary telescopic foldable propeller is ingeniously integrated with the wheel, not only making the size of the propeller appropriately larger, reducing the horizontal space occupied by the aircraft on the ground, but also realizing the expansion and contraction deformation of the propeller by using the centrifugal force principle, without additional power, simplifying the control difficulty and reducing the electrical unit.

[0007] To achieve the above object, a propeller is designed, characterized in that,

[0008] a rotary telescopic propeller is adopted;

[0009] The rotary telescopic propeller includes blades, a propeller shaft, and a chute sleeve assembled on the aircraft and driven by a driving mechanism to rotate; the top end of the propeller shaft is fixedly assembled and connected to the blades, and the middle part of the propeller shaft is rotatably and slidably sleeved in the chute sleeve, so that the propeller shaft makes forward and reverse rotational lifting movements relative to the chute sleeve;

[0010] The blades adopt folding blades, and the folding blades include two sub-blades symmetrically arranged on both sides of the top end of the propeller shaft, a main blade pin-connected to the outer ends of the sub-blades, and a torsion spring for folding and contracting the propeller, with both ends elastically connecting the sub-blades and the main blade respectively; when the main blade is not subject to external force, the torsion spring makes the main blade and the sub-blades in a folded state; when the propeller shaft rotates, when the centrifugal force of the main blade overcomes the torsion of the torsion spring, the blades can automatically rotate and unfold.

[0011] Furthermore, the propeller shaft adopts a hollow shaft, and spiral chutes are arranged on the shaft wall of the hollow shaft along a spiral line;

[0012] The chute sleeve is sleeved outside the propeller shaft, and the chute sleeve is bolted to the spiral chute of the propeller shaft;

[0013] A chute spring is also embedded in the propeller shaft, and the chute spring is located between the near bottom of the chute sleeve and the bolted connection of the propeller shaft and the bottom end of the propeller shaft.

[0014] Furthermore, side perforations are respectively arranged at the near bottom end of the propeller shaft and the near two ends of the chute sleeve;

[0015] The spherical part of the first ball shaft is located inside the near bottom end of the propeller shaft, and its two shaft ends are respectively embedded in the side perforations on both sides of the propeller shaft;

[0016] The spherical part of the second ball shaft is located inside the propeller shaft, and its two shaft ends pass through the spiral chute and are respectively embedded in the side perforations at the near bottom end of the chute sleeve;

[0017] After the chute sleeve shaft passes through the corresponding spiral chute, its two ends are respectively embedded in the side perforations at the near top end of the chute sleeve;

[0018] The chute spring is located inside the propeller shaft between the first ball shaft and the second ball shaft.

[0019] Furthermore, a sunk groove type pin hole is arranged at the outer end of the sub-blade, and a first pin is arranged at the bottom surface of the pin-connected end of the main blade, and the first pin is pin-connected in the sunk groove type pin hole.

[0020] Furthermore, a limiting device for making the main blade rotate around the sub-blade by a certain angle is also arranged between the main blade and the sub-blade.

[0021] Furthermore, the limiting device is an arc-shaped groove with the first pin as the center arranged on the main blade at the pin-connected part, and a second pin is arranged at the corresponding part of the sub-blade, and the second pin is embedded in the arc-shaped groove;

[0022] The arc-shaped groove is a semi-circular arc-shaped groove. When the propeller blades are fully unfolded, the two ends of the arc-shaped groove are respectively located on the midlines in the length direction of the auxiliary propeller.

[0023] Furthermore, the torsion spring is sleeved on the first pin. One end of the torsion spring is snapped onto the main propeller upwards, and one end of the torsion spring is snapped onto the bottom surface of the groove of the arc-shaped groove of the auxiliary propeller downwards.

[0024] A wheel-propeller assembly of an aircraft vehicle using the propeller, including a wheel with a hub hole in the center, characterized in that

[0025] It further includes the propeller and the driving mechanism; the driving mechanism and the propeller blades are respectively located on the two side surfaces of the wheel;

[0026] The upper half of the chute sleeve of the propeller is pivotally connected in the hub hole;

[0027] The driving mechanism is arranged on the wheel. The driving mechanism adopts a paddle-wheel switching driving mechanism, which includes: a motor, a motor gear axially connected to the output shaft of the motor, a wheel-propeller gearbox, a gear disk fixed on one end face of the hub hole of the wheel corresponding to the bottom end side of the corresponding propeller shaft, a wheel output gear meshing with the gear disk, a propeller gear sleeved on the outer wall of the propeller shaft and fixedly connected to the bottom end of the chute sleeve, and a paddle output gear respectively meshing with the motor gear and the propeller gear;

[0028] The input end of the wheel-propeller gearbox is provided with two-speed shifting input teeth. When one shifting input tooth works, it meshes with the motor gear. The end output gear of the wheel-propeller gearbox meshes with the wheel output gear to drive the gear disk to rotate and drive the wheel to rotate. When the other shifting input tooth works, it meshes with the motor gear and the propeller gear respectively, so that the propeller rotates and works.

[0029] Furthermore, the wheel-propeller gearbox further includes a housing, a reduction gear set arranged in the housing, and an electronic control module. The housing is arranged in an overall arc shape. The center of the housing is set as a bearing installation ring, and the bearing installation ring is embedded between the hub hole of the wheel and the chute sleeve;

[0030] The motor gear is arranged in one side end of the housing, and the end face of the motor is fixed on the side surface of the housing of one side end; the wheel output gear is arranged in the other side end of the housing;

[0031] One shifting input tooth is arranged in the housing beside the motor gear on the side far from the center of the circle. When it works, it meshes with the motor gear and the input end of the reduction gear set respectively, and the output end of the reduction gear set meshes with the wheel output gear;

[0032] The other shifting input tooth is a paddle output gear, which is arranged in the housing beside the motor gear on the side close to the center of the circle. When it works, it meshes with the motor gear and the propeller gear respectively;

[0033] The electronic control module of the wheel and paddle gearbox controls the switching of the two-speed shift input gear teeth.

[0034] Furthermore, the cross-section of the bearing mounting ring is integrally T-shaped. A propeller bearing is provided between the outer wall of the neck of the T-shaped bearing mounting ring and the hub hole of the wheel; a propeller bearing groove is provided on the inner wall of the head of the T-shaped bearing mounting ring, and a wheel bearing is embedded between the inner wall of the propeller bearing groove and the outer wall of the chute sleeve.

[0035] Compared with the prior art, the propeller of the present invention adopts a rotating telescopic working principle, making its telescopic structure simple, convenient to control the telescopic, and facilitating the reduction of volume;

[0036] And further, the blade is designed to be foldable. Without changing the principle dimensions of the aircraft, the rotation diameter of the propeller can be increased; when the propeller rotates and telescopes, the automatic unfolding and contraction of the blade, lifting off and landing can be realized by using the inertia principle, without additional power, simplifying the control difficulty and reducing the electrical unit;

[0037] Furthermore, it is made into a wheel and paddle assembly inside the wheel of a small-sized quadcopter, and switches to a car mode or an aircraft mode in a specific environment, making its movement mechanism have higher efficiency and passability, adapting to all environments that need to be passed through, realizing an amphibious mobile platform on land and in the air, and can almost adapt to all environments that need to be passed through. Brief Description of the Drawings

[0038] Figure 1 It is an exploded view of the propeller in the present invention.

[0039] Figure 2 It is a three-dimensional view of the propeller in the present invention.

[0040] Figure 3 It is an exploded view of the blade and the propeller shaft in the present invention.

[0041] Figure 4 It is a three-dimensional view of the assembly of the blade and the propeller shaft in the present invention.

[0042] Figure 5 It is an exploded view of the wheel and paddle assembly in the present invention.

[0043] Figure 6 It is a three-dimensional view of the back view of the wheel and paddle assembly when the blade is fully unfolded in the present invention.

[0044] Figure 7 It is a three-dimensional view of the front view of the wheel and paddle assembly when the blade is fully unfolded in the present invention.

[0045] Figure 8 It is a three-dimensional view of the back view of the wheel and paddle assembly when the blade is folded in the present invention.

[0046] Figure 9 This is a perspective three-dimensional view of the wheel paddle assembly from the front when the blades are folded in the present invention.

[0047] Figure 10 This is a perspective three-dimensional view of the wheel paddle assembly from the back after removing the blades in the present invention.

[0048] Figure 11 This is a perspective three-dimensional view of a certain angle of the wheel paddle gearbox in the present invention.

[0049] Figure 12 This is a perspective three-dimensional view of another angle of the wheel paddle gearbox in the present invention.

[0050] Figure 13 This is a rear view of the wheel paddle assembly after removing the blades in the present invention.

[0051] Figure 14 This is an exploded view of the wheel paddle assembly after removing the blades in the present invention.

[0052] Figure 15 This is a perspective three-dimensional view of the wheel paddle assembly from the front after removing the blades in the present invention.

[0053] Figure 16 This is a front view of the wheel paddle assembly after removing the blades in the present invention.

[0054] Figure 17 It is Figure 16 the sectional view taken along the line A-A shown in

[0055] Figure 18 It is Figure 16 the sectional view taken along the line B-B shown in Detailed implementation manners

[0056] The present invention will be further described in conjunction with the accompanying drawings.

[0057] Embodiment 1

[0058] Refer to Figures 1 to 4 , a propeller, characterized in that

[0059] a rotary telescopic propeller is adopted;

[0060] The rotary telescopic propeller includes blades, a propeller shaft 17, and a chute sleeve 13 assembled on the aircraft and driven by a driving mechanism to rotate; the top of the propeller shaft 17 is fixedly assembled and connected with the blades, and the middle part of the propeller shaft 17 is rotationally and slidably sleeved in the chute sleeve 13, so that the propeller shaft 17 makes positive and negative rotational lifting movements relative to the chute sleeve 13; in this example, the chute sleeve 13 is in a T shape, and the large head end of the T shape is convenient for assembling and connecting with the propeller gear 10;

[0061] The paddle blades described above are folding paddle blades. The folding paddle blades include two sub-paddles 19 symmetrically arranged on both sides of the top end of the paddle shaft 17, a main paddle 21 pin-connected to the outer ends of the sub-paddles 19, and a torsion spring 20 for folding and contracting the propeller, with both ends elastically connecting the sub-paddles 19 and the main paddle 21 respectively. When no external force acts on the main paddle 21, the torsion spring 20 keeps the main paddle 21 and the sub-paddles 19 in a folded state; when the paddle shaft 17 rotates, when the centrifugal force of the main paddle overcomes the torsion of the torsion spring 20, the paddle blades can automatically rotate and unfold.

[0062] Furthermore, the paddle shaft 17 is a hollow shaft, and spiral chutes 17-1 are arranged along a spiral line on the shaft wall of the hollow shaft; the chute sleeve 13 is sleeved outside the paddle shaft 17, and the chute sleeve 13 is bolted to the spiral chutes 17-1 of the paddle shaft 17; a chute spring 18 is also embedded in the paddle shaft 17, and the chute spring 18 is located between the near bottom of the chute sleeve 13 and the bolted connection of the paddle shaft 17 and the bottom end of the paddle shaft 17.

[0063] Furthermore, side perforations are respectively provided at the near bottom end of the paddle shaft 17 and the near two ends of the chute sleeve 13; the spherical part of the first ball shaft 11 is located inside the near bottom end of the paddle shaft 17, and its two shaft ends are respectively embedded in the two side perforations on both sides of the paddle shaft 17; the spherical part of the second ball shaft 16 is located inside the paddle shaft 17, and its two shaft ends pass through the spiral chutes 17-1 and are respectively embedded in the two side perforations at the near bottom end of the chute sleeve 13; after the chute sleeve shaft 12 passes through the corresponding spiral chutes 17-1, its two ends are respectively embedded in the two side perforations at the near top end of the chute sleeve 13; the chute spring 18 is located inside the paddle shaft 17 between the first ball shaft 11 and the second ball shaft 16. When not working, the chute spring 18 is between the first ball shaft 11 and the second ball shaft 16, and the second ball shaft 16 is subjected to the elastic force of the chute spring 18 to keep the paddle shaft 17 in a retracted state relative to the chute sleeve 13.

[0064] Furthermore, a sunk groove type pin hole 19-1 is provided at the outer end of the sub-paddle 19, and a first pin 21-1 is provided on the bottom surface of the pin-connected end of the main paddle 21. The first pin 21-1 is pin-connected in the sunk groove type pin hole 19-1, with a simple structure and reasonable design, which is convenient for the main paddle 21 to unfold or fold.

[0065] Furthermore, a limiting device for enabling the main paddle 21 to rotate around the sub-paddle 19 by a certain angle is also provided between the main paddle 21 and the sub-paddle 19, which ensures the direction of the main paddle rotating and unfolding and prevents the two main paddles 21 from interfering with each other.

[0066] Furthermore, the limiting device is an arc-shaped groove 21-2 centered on the first pin 21-1 at the pin joint of the main blade 21, and a second pin 19-2 is provided at the corresponding position of the auxiliary blade 19. The second pin 19-2 is embedded in the arc-shaped groove 21-2. The arc-shaped groove 21-2 is a semi-circular arc-shaped groove. When the blades are fully unfolded, the two ends of the arc-shaped groove are respectively located on the midline in the length direction of the auxiliary blade 19, that is, the angle at which the main blade 21 rotates around the auxiliary blade 19 is within the range of 0 to 180 degrees, so that the unfolding angle of the main blade is maximized, the size of the propeller is maximized, and the flight lift is increased.

[0067] Furthermore, referring to Figure 3 , the torsion spring 20 is sleeved on the first pin 21-1, and one end of the torsion spring 20 is snapped onto the main blade 21 upwards, that is, the upward end of the torsion spring 20 is embedded in the main blade pin hole 21-3 provided at the end of the main blade 21; one end of the torsion spring 20 is embedded downwards in the auxiliary blade pin hole 19-3 provided on the bottom surface of the arc-shaped groove 21-2 of the auxiliary blade 19.

[0068] Embodiment 2

[0069] Referring to Figures 5 to 18 , this example is the wheel-propeller assembly of an aircraft vehicle using the propeller described in Embodiment 1, including a wheel 8 with a hub hole in the center, characterized in that

[0070] It further includes the propeller and the driving mechanism; the driving mechanism and the blades are respectively located on two sides of the wheel;

[0071] The upper half of the chute sleeve 13 of the propeller is pivotally connected in the hub hole;

[0072] The driving mechanism is arranged on the wheel 8. The driving mechanism adopts a paddle-wheel switching driving mechanism, which includes: a motor 1, a motor gear 2 axially connected to the output shaft of the motor, a paddle-wheel gearbox 3, a gear disk 6 fixed on one end face of the hub hole of the wheel corresponding to the bottom end side of the corresponding paddle shaft 17, a wheel output gear 7 meshing with the gear disk 6, a propeller gear 10 sleeved on the outer wall of the paddle shaft 17 and fixedly connected to the bottom end of the chute sleeve 13, and a paddle output gear 9 meshing with the motor gear 2 and the propeller gear 10 respectively;

[0073] The input end of the paddle-wheel gearbox 3 is provided with two-speed shift input teeth. When one shift input tooth works, it meshes with the motor gear 2. The end output gear of the paddle-wheel gearbox 3 meshes with the wheel output gear 7 to drive the gear disk 6 to rotate and drive the wheel to rotate. When the other shift input tooth works, it meshes with the motor gear 2 and the propeller gear 10 respectively to make the propeller rotate and work.

[0074] Further, the paddle gearbox 3 further includes a housing, a reduction gear set disposed within the housing, and an electronic control module. The overall shape of the housing is arranged in an arc shape. The center of the housing is provided with a bearing mounting ring 3-1, and the bearing mounting ring 3-1 is embedded between the hub hole of the wheel and the sliding groove sleeve 13;

[0075] The motor gear 2 is disposed within one end head of the housing, and the end face of the motor 1 is fixed to the side surface of the housing of one end head; the wheel output gear 7 is disposed within the other end head of the housing;

[0076] A shift input gear is disposed within the housing beside the motor gear 2 on the side far from the center of the circle. During operation, it meshes with the motor gear 2 and the input end of the reduction gear set respectively, and the output end of the reduction gear set meshes with the wheel output gear 7;

[0077] Another shift input gear is the paddle output gear 9, which is disposed within the housing beside the motor gear 2 on the side close to the center of the circle. During operation, it meshes with the motor gear 2 and the propeller gear 10 respectively;

[0078] The electronic control module of the paddle gearbox 3 controls the switching of the two shift input gears.

[0079] Further, referring to Figures 15 to 16 , the cross-section of the bearing mounting ring 3-1 is integrally in a T shape. A propeller bearing 14 is provided between the outer wall of the neck 3-11 of the T-shaped bearing mounting ring and the hub hole of the wheel. Specifically, a first snap ring groove 3-2 is provided at the outer wall near the end of the neck 3-11 of the T-shaped bearing mounting ring, and then the first snap ring 15-1 is clamped in the first snap ring groove 3-2 to clamp the propeller bearing 14 through the first snap ring 15-1; a propeller bearing embedding groove is provided on the inner wall of the head 3-12 of the T-shaped bearing mounting ring, and a wheel bearing 4 is embedded between the inner wall of the propeller bearing embedding groove and the outer wall of the sliding groove sleeve 13. In this example, a second snap ring groove is further provided on the outer wall of the sliding groove sleeve 13, and the second snap ring is clamped in the second snap ring groove to clamp the wheel bearing 4 between the second snap ring and the T-shaped end of the sliding groove sleeve 13.

[0080] When the wheel-propeller assembly is in the propeller mode, the motor 1 drives the motor gear 2, the propeller output gear 9, and the propeller gear 10 to rotate in sequence, thereby driving the sliding groove sleeve 13 to rotate; when the sliding groove sleeve 13 rotates with acceleration under the driving action, the sliding groove sleeve shaft 12 and the second bead shaft 16 fixed on the sliding groove sleeve 13 slide in the spiral sliding groove 17-1 of the propeller shaft 17 respectively. Due to the inertia of the propeller shaft 17, it moves upward in a spiral extension motion against the elastic force of the sliding groove spring 18. After reaching the predetermined position, the propeller shaft 17 synchronizes the rotation speed with the sliding groove sleeve 13; initially, under the elastic force of the torsion spring 20, the propeller sub-propeller 19 and the main propeller 21 are in a folded state; during continuous acceleration rotation, when the rotation speed of the sub-propeller 19 reaches the predetermined value, under the action of centrifugal force, the left and right main propellers 21 overcome the torsion of the torsion spring 20 and unfold, presenting a straight line and reaching the maximum diameter state, thereby achieving the maximum efficiency of the propeller. At this time, the wheel output gear 7 and the motor gear 2 are in a non-engaged state, the wheel output gear 7 is stationary relative to the wheel-propeller gearbox 3, the wheel output gear 7 meshes with the gear disk 6, the gear disk 6 is directly connected to the wheel 8, and the wheel 8 is stationary relative to the wheel-propeller gearbox 3.

[0081] When the wheel-propeller assembly is in the wheel mode, the propeller shaft 17 is directly connected to the sub-propeller 19 of the propeller. The main propeller 21 and the sub-propeller 19 are in a folded state under the elastic force of the propeller contraction torsion spring 20, and the sub-propeller 19 is stationary relative to the wheel-propeller gearbox 3. The motor 1 drives the motor gear 2, the reduction gear set, the wheel output gear 7, and the gear disk 6 to rotate in sequence, realizing the reduction output to the gear disk 6. The gear disk 6 is directly connected to the wheel 8, thereby realizing the high-torque rotation function of the wheel 8.

[0082] In summary, the present invention is a wheel-propeller assembly technology that combines the lifting and folding propeller and the wheel for an amphibious aircraft. When the amphibious aircraft is in the ground driving state, the rotation plane of the wheel-propeller assembly is perpendicular to the ground. At this time, the ground driving of the amphibious aircraft is wheel-driven like a four-wheel vehicle; at this time, the propeller is in a folded state and is inside the wheel hub, being stationary relative to the aircraft itself. At this time, the amphibious aircraft presents the state of a conventional car and can drive on the ground.

[0083] When the amphibious aircraft is about to deform from the ground driving state to the flight state, the rotation plane of the wheel-propeller assembly rotates 90 degrees to be parallel to the ground. At this time, the propeller starts to rotate with positive acceleration. Due to the action of inertia, the propeller shaft sleeve rises in the threaded groove against the pressure of the spring to the predetermined position, and at this time, the rising action of the propeller is completed. When the continuous positive acceleration makes the propeller speed reach the predetermined value, at this time, when the centrifugal force is greater than the tensile force of the springs on both sides of the folded propeller, the propeller unfolds completely from the folded state. At this time, the amphibious aircraft presents the state of a quadrotor aircraft and can fly.

[0084] The present invention realizes an amphibious land-air mobile platform, which can almost adapt to all environments where passage is required. Because it integrates a wheeled driving mechanism, it has strong adaptability to flight takeoff and landing environments, can fly over obstacles, has high passage efficiency, and can reach the destination directly.

Claims

1. A propeller, characterized in that a rotary telescopic propeller is adopted; the rotary telescopic propeller includes blades, a propeller shaft (17), and a chute sleeve (13) assembled on the aircraft and driven to rotate by a driving mechanism; the top end of the propeller shaft (17) is fixedly assembled and connected with the blades, and the middle part of the propeller shaft (17) is rotationally and slidably sleeved in the chute sleeve (13), so that the propeller shaft (17) makes forward and reverse rotational lifting movements relative to the chute sleeve (13); the blades adopt folding blades, and the folding blades include 2 secondary blades (19) symmetrically arranged on both sides of the top end of the propeller shaft (17), a main blade (21) pin-connected to the outer ends of the secondary blades (19), and a torsion spring (20) for folding and contracting the propeller, with both ends elastically connecting the secondary blades (19) and the main blade (21); when no external force acts on the main blade (21), the torsion spring (20) makes the main blade (21) and the secondary blades (19) in a folded state; and when the propeller shaft (17) rotates, when the centrifugal force of the main blade overcomes the torsion of the torsion spring (20), the blades can automatically rotate and unfold; the propeller shaft (17) adopts a hollow shaft, and a spiral chute (17-1) is arranged on the shaft wall of the hollow shaft along a spiral line; the chute sleeve (13) is sleeved outside the propeller shaft (17), and the chute sleeve (13) is bolted to the spiral chute (17-1) of the propeller shaft (17); a chute spring (18) is also embedded in the propeller shaft (17), and the chute spring (18) is located between the near bottom of the chute sleeve (13) and the bolted joint of the propeller shaft (17) and the bottom end of the propeller shaft (17); side perforations are respectively arranged at the near bottom end of the propeller shaft (17) and the near two ends of the chute sleeve (13); the spherical part of the first ball shaft (11) is located inside the near bottom end of the propeller shaft (17), and its two shaft ends are respectively embedded in the two side perforations on both sides of the propeller shaft (17); the spherical part of the second ball shaft (16) is located inside the propeller shaft (17), and its two shaft ends pass through the spiral chute (17-1) and are respectively embedded in the two side perforations at the near bottom end of the chute sleeve (13); after the chute sleeve shaft (12) passes through the corresponding spiral chute (17-1), its two ends are respectively embedded in the two side perforations at the near top end of the chute sleeve (13); the chute spring (18) is located inside the propeller shaft (17) between the first ball shaft (11) and the second ball shaft (16); a sunk groove type pin hole (19-1) is arranged at the outer end of the secondary blade (19), and a first pin (21-1) is arranged at the bottom surface of the pin-connected end of the main blade (21), and the first pin (21-1) is pin-connected in the sunk groove type pin hole (19-1); a limiting device for enabling the main blade (21) to rotate around the secondary blade (19) by a certain angle is also arranged between the main blade (21) and the secondary blade (19); the limiting device is an arc-shaped groove (21-2) with the first pin (21-1) as the center arranged on the main blade (21) at the pin-connected part, and a second pin (19-2) is arranged at the corresponding part of the secondary blade (19), and the second pin (19-2) is embedded in the arc-shaped groove (21-2); The arc groove (21-2) is a semi-circular arc groove. When the blade is fully deployed, the two ends of the arc groove are respectively located on the midlines in the length direction of the auxiliary blade (19). The torsion spring (20) is sleeved on the first pin (21-1). One end of the torsion spring (20) is snapped onto the main blade (21) upward, and one end of the torsion spring (20) is snapped onto the bottom surface of the groove of the arc groove (21-2) of the auxiliary blade (19) downward.

2. A wheel paddle assembly of an aircraft vehicle using the propeller as claimed in claim 1, comprising a wheel (8) with a hub hole in the center, characterized in that it further comprises the propeller and the driving mechanism; the driving mechanism and the blade are respectively located on two side surfaces of the wheel; The upper half of the chute sleeve (13) of the propeller is pivotally connected in the hub hole. The driving mechanism is arranged on the wheel (8). The driving mechanism adopts a paddle wheel switching driving mechanism, which includes: a motor (1), a motor gear (2) axially connected to the output shaft of the motor, a wheel paddle gearbox (3), a gear disk (6) fixed on one end face of the hub hole of the wheel corresponding to the bottom end side of the corresponding paddle shaft (17), a wheel output gear (7) meshing with the gear disk (6), a propeller gear (10) sleeved on the outer wall of the paddle shaft (17) and fixedly connected to the bottom end of the chute sleeve (13), and a paddle output gear (9) respectively meshing with the motor gear (2) and the propeller gear (10); The input end of the wheel paddle gearbox (3) is provided with two-speed shifting input teeth. When one shifting input tooth works, it meshes with the motor gear (2). The end output gear of the wheel paddle gearbox (3) meshes with the wheel output gear (7) to drive the gear disk (6) to rotate and drive the wheel to rotate. When the other shifting input tooth works, it respectively meshes with the motor gear (2) and the propeller gear (10) to make the propeller rotate and work.

3. The wheel paddle assembly as claimed in claim 2, characterized in that The wheel paddle gearbox (3) further comprises a housing, a reduction gear set arranged in the housing, and an electronic control module. The housing is arranged in an overall circular arc shape. A bearing installation ring (3-1) is arranged at the center of the housing, and the bearing installation ring (3-1) is embedded between the hub hole of the wheel and the chute sleeve (13); The motor gear (2) is arranged in one side end of the housing, and the end face of the motor (1) is fixed on the side surface of the housing of one side end; the wheel output gear (7) is arranged in the other side end of the housing; One shifting input tooth is arranged in the housing beside the motor gear (2) on the side far from the center of the circle. When it works, it respectively meshes with the motor gear (2) and the input end of the reduction gear set, and the output end of the reduction gear set meshes with the wheel output gear (7); The other shifting input tooth is the paddle output gear (9). It is arranged in the housing beside the motor gear (2) on the side close to the center of the circle. When it works, it respectively meshes with the motor gear (2) and the propeller gear (10); The electronic control module of the wheel paddle gearbox (3) controls the switching of the two-speed shifting input teeth.

4. The paddle wheel assembly according to claim 3, characterized in that, The cross-section of the described bearing mounting ring (3-1) is integrally T-shaped. A propeller bearing (14) is provided between the outer wall of the neck (3-11) of the T-shaped bearing mounting ring and the hub hole of the wheel; a propeller bearing groove is provided on the inner wall of the head (3-12) of the T-shaped bearing mounting ring, and a wheel bearing (4) is embedded between the inner wall of the propeller bearing groove and the outer wall of the chute sleeve (13).

Images