Semi-rigid rotor head

Abstract

The utility model provides a semi-rigid rotor head, which relates to the technical field of aircrafts and comprises a motor and a connecting propeller hub, a connecting block is arranged on the surface of the connecting propeller hub, a flapping propeller hub is arranged on the side surface of the connecting block, flapping bearings are arranged on two sides of the flapping propeller hub, a flapping shaft is arranged in the two flapping bearings, and a propeller clamp is arranged on the side surface of the flapping propeller hub. By adopting the flapping propeller hub, the flapping bearing and the flapping shaft, the rotor plane of the semi-rigid rotor head can flexibly flapping up and down by taking the flapping shaft as a shaft, so that the resistance to external wind disturbance is increased, lateral acting force on a motor main shaft is effectively avoided, the wind resistance of the whole machine under complex wind conditions is greatly improved, and the service life of the whole machine is prolonged. And in the structural layout, a complex and space-occupying connecting rod structure of a traditional rotor head is abandoned, and through the combination of the connecting block, the waving bearing, the waving shaft and other components, the overall size is remarkably reduced, the longitudinal proportion is reduced, a large amount of space is saved, and favorable conditions are created for reasonable layout of other components in the aircraft.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft, especially relates to semi -rigid rotor head. BACKGROUND

[0002] According to the vertical column double rotor unmanned aerial vehicle's rotor head structure of Chinese patent announcement number CN219257736U, belong to unmanned aerial vehicle's rotor head technical field, including the paddle clamp subassembly, the one side of paddle clamp subassembly is provided with paddle clamp seat, the one side of paddle clamp seat is provided with seesaw subassembly, the lower extreme of seesaw subassembly is provided with pivot subassembly, the outer wall of pivot subassembly is provided with immobile ring, the lower extreme of pivot subassembly is fixedly provided with tilt disc, the outer wall of tilt disc is provided with pull rod, the lower extreme of tilt disc is fixedly provided with rudder seat body, the outer wall of rudder seat body is provided with steering gear, the inside of paddle clamp subassembly one side is provided with quick insertion pin. Therefore, when connecting with unmanned aerial vehicle, the flight of unmanned aerial vehicle can be guaranteed more stable, and the service life can be increased.

[0003] The above-mentioned document and prior art have the following problems: the existing rotor head is mostly a connecting rod type, its structure is based on mechanical connecting rod connection, the movement mode is fixed and heavy, when facing the change of wind, it lacks flexible and automatic waving adjustment mechanism, it is difficult to quickly and sensitively respond according to the change of incoming flow speed, the wind resistance of the aircraft is reduced, and a plurality of connecting rods are connected with each other, not only the overall size is large, but also the proportion of the longitudinal direction is too high in the layout of the aircraft, a large space is occupied, and the optimization and improvement of other performances of the aircraft are limited. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a semi-rigid rotor head.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a semi-rigid rotor head, comprising a motor and a connecting hub, the surface of the connecting hub is provided with a connecting block, the side surface of the connecting block is provided with a waving hub, the two sides of the waving hub are provided with waving bearings, the interiors of the two waving bearings are provided with a waving shaft, the side surface of the waving hub is provided with a paddle clamp, and the surface of the paddle clamp is provided with a paddle blade.

[0006] Preferably, the output end of the motor is provided with a rotating shaft, the connecting hub is arranged on the surface of the rotating shaft, and the motor is rotationally connected with the connecting hub through the rotating shaft.

[0007] Preferably, the connecting block is arranged on the surface of the connecting hub in an axisymmetric manner, the position of the connecting block corresponds to the waving bearing, and the waving shaft is fixedly connected with the connecting block.

[0008] Preferably, the connecting hub is shaped and positioned to match the flapping hub, and the paddle clamp and paddle blade are arranged in axis symmetry with two groups.

[0009] Preferably, the flapping hub is provided with first positioning holes on both sides, and the paddle clamp is provided with second positioning holes on the top surface and the bottom surface.

[0010] Preferably, the surface of the first positioning hole is provided with a first positioning pin, and the surface of the second positioning hole is provided with a second positioning pin.

[0011] Preferably, the flapping hub is fixedly connected with the paddle clamp through the first positioning pin, and the paddle clamp is fixedly connected with the paddle blade through the second positioning pin.

[0012] Beneficial effects

[0013] In the utility model, the rotor plane of the semi-rigid rotor head can be flexibly waved up and down with the flapping shaft as the shaft, so that the resistance to external wind disturbance is increased, when the incoming wind side paddle blade flow speed changes, the paddle blade can automatically adjust the flapping posture, when the incoming flow speed increases and the lift increases, the paddle blade automatically flaps upward, the lateral force on the motor spindle is effectively avoided, the wind resistance of the whole machine under complex wind conditions is greatly improved, the stability and safety of flight are ensured, and in the structural layout, the traditional rotor head complex and space-occupying connecting rod structure is abandoned, the overall size is significantly reduced through the combination of the connecting block, the flapping bearing and the flapping shaft, the longitudinal proportion is reduced, a large amount of space is saved, favorable conditions are created for the reasonable layout of other components in the aircraft, and the overall performance and optimal design of the aircraft are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a perspective view of the utility model;

[0016] Figure 3 It is a utility model Figure 2 A is an enlarged view of the utility model;

[0017] Figure 4 It is a front view of the utility model.

[0018] Legend:

[0019] 1, motor; 2, connecting hub; 3, flapping hub; 4, paddle clamp; 5, connecting block; 6, rotating shaft; 7, flapping bearing; 8, flapping shaft; 9, first positioning hole; 10, first positioning pin; 11, second positioning hole; 12, second positioning pin; 13, paddle blade. DETAILED DESCRIPTION

[0020] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model will be further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] The specific embodiments of the utility model will be described below in combination with the drawings. Specific embodiment one

[0023] Referring to Figures 1-4 , the semi-rigid rotor head comprises a motor 1 and a connecting hub 2, the output end of the motor 1 is provided with a rotating shaft 6, the connecting hub 2 is arranged on the surface of the rotating shaft 6, the motor 1 is rotatably connected with the connecting hub 2 through the rotating shaft 6, the motor 1 serves as the power source of the whole rotor head, drives the rotating shaft 6 at the output end to rotate, and further drives the connecting hub 2 and a series of subsequent components connected therewith to rotate together, is the starting power component for the work of the whole semi-rigid rotor head, provides power support for the rotation of the rotor, drives the rotor to rotate, so that it can generate enough lift to maintain the flight state of the aircraft in the air, through the arrangement of the connecting hub 2, on the one hand, the motor 1 power transmitted from the rotating shaft 6 is accepted, and other components connected therewith are driven to rotate together, on the other hand, through the connecting block 5 arranged on the surface and the flapping hub 3, the structure basis for the rotor to realize the flapping action is provided, so that the whole rotor system can flexibly adjust the attitude according to the external factors such as wind conditions.

[0024] The surface of the connecting hub 2 is provided with a connecting block 5, the connecting block 5 is arranged on the surface of the connecting hub 2 in axial symmetry, and the position of the connecting block 5 corresponds to the flap bearing 7, the flap shaft 8 is fixedly connected with the connecting block 5, the connecting block 5 serves as a connecting structure between the connecting hub 2 and the flap hub 3, and also provides a fixed connection position for the flap shaft 8, so that in the case of external wind disturbance and the like, the corresponding flap action can be realized based on the flap shaft 8, thereby driving the entire flap hub 3 and subsequent components to adjust the posture, the side surface of the connecting block 5 is provided with the flap hub 3, the flap hub 3 is one of the core structures for connecting multiple key components, the entire structure can smoothly flap up and down around the flap shaft 8 with the help of the two flap bearings 7, and the flap hub 3 is connected with the paddle clamp 4 through the flap shaft 8, so as to transmit the movement and force of the flap hub 3 to the paddle clamp 4 and the paddle 13, and coordinate the components to complete the rotation and flap of the rotor, the shape and position of the connecting hub 2 are matched with the flap hub 3, so that the flap hub 3 can flap up and down smoothly without being blocked, and the normal movement of the flap hub 3 is ensured, the two sides of the flap hub 3 are provided with the flap bearings 7, the flap bearings 7 provide smooth rotating support for the flap hub 3 to flap around the flap shaft 8, reduce the friction resistance between components, ensure that the flap action can be carried out flexibly and stably, improve the response sensitivity and action fluency of the entire rotor head, the inside of the two flap bearings 7 is provided with the flap shaft 8, the flap shaft 8 serves as the rotating axis of the entire rotor head flap action, so that the flap hub 3 and subsequent components can flap up and down around it, and it is a key structural element for realizing the unique flap function of the semi-rigid rotor head and improving the wind resistance.

[0025] The side surface of the flap hub 3 is provided with the paddle clamp 4, the two sides of the flap hub 3 are provided with the first positioning hole 9, the surface of the first positioning hole 9 is provided with the first positioning pin 10, the flap hub 3 is fixedly connected with the paddle clamp 4 through the first positioning pin 10, the surface of the paddle clamp 4 is provided with the paddle 13, the top surface and the bottom surface of the paddle clamp 4 are provided with the second positioning hole 11, the surface of the second positioning hole 11 is provided with the second positioning pin 12, the paddle clamp 4 is fixedly connected with the paddle 13 through the second positioning pin 12, the paddle clamp 4 is an intermediate component for connecting the flap hub 3 and the paddle 13, and is fixedly connected with the flap hub 3 through the first positioning pin 10 to realize the transmission of force and movement between the two, and is connected with the paddle 13 through the second positioning hole 11 and the second positioning pin 12 to ensure the stability of the paddle 13 installation, so that the paddle 13 can operate normally with the entire rotor system, generate lift together and participate in the adjustment of the flight attitude in response to wind disturbance, the paddle clamp 4 and the paddle 13 are arranged in axial symmetry in two groups, the paddle 13 is a key component for generating lift of the entire semi-rigid rotor head, rotates at high speed under the drive of the rotor system, and generates a pressure difference in the airflow passing through the surface through the unique airfoil design, thereby providing upward lift for the aircraft to support the aircraft to fly in the air, and at the same time, when wind disturbance occurs, the paddle 13 participates in adjusting the flight attitude of the aircraft by flapping with the entire rotor head.

[0026] When the semi-rigid rotor head is working, the motor 1 is first started to convert electrical energy into mechanical energy to drive the rotating shaft 6 at the output end to rotate, the connecting hub 2 is driven to rotate by the rotating shaft 6, and the connecting hub 2 further drives each component connected thereto to operate, since the connecting block 5 is fixedly connected with the flapping shaft 8 and the flapping shaft 8 is connected with the flapping bearing 7, when the external wind disturbance occurs, the flapping hub 3 of the semi-rigid rotor head can smoothly flap up and down with the flapping shaft 8 as the axis and with the help of the flapping bearings 7 on both sides, so as to realize attitude adjustment, when the incoming wind side blade 13 flow speed changes, the blade 13 can automatically adjust the flapping attitude, such as automatically flapping upward when the incoming flow speed increases and the lift increases, so as to effectively avoid the lateral force on the motor 1 main shaft, greatly improve the wind resistance of the whole machine in complex wind conditions, and ensure the stability and safety of flight, the flapping hub 3 is firmly connected with the paddle clamp 4 through the first positioning hole 9 and the first positioning pin 10 on both sides, and the movement and force of the flapping hub 3 are transmitted to the paddle clamp 4, the two groups of axisymmetric paddle clamps 4 and blades 13 rotate at high speed under the driving of the whole rotor system, the blade 13 generates a pressure difference in the airflow passing through the surface of the blade 13 by virtue of its unique airfoil, generates upward lift to support the aircraft flight, and adjusts the flight attitude of the aircraft in coordination with the flapping action of the whole rotor head when the wind disturbance occurs, so that the whole semi-rigid rotor head can effectively cope with the external wind condition change while providing lift, and ensure the stable flight of the aircraft.

[0027] In summary:

[0028] 1. The connecting hub 2, the flapping bearing 7 and the flapping shaft 8 are adopted, the rotor plane of the semi-rigid rotor head can flexibly flap up and down with the flapping shaft 8 as the axis, so as to increase the resistance to external wind disturbance, when the incoming wind side blade 13 flow speed changes, the blade 13 can automatically adjust the flapping attitude, such as automatically flapping upward when the incoming flow speed increases and the lift increases, so as to effectively avoid the lateral force on the motor 1 main shaft, greatly improve the wind resistance of the whole machine in complex wind conditions, and ensure the stability and safety of flight, and in terms of structural layout, the traditional complex and space-occupying connecting rod structure of the rotor head is abandoned, the overall size is significantly reduced, the longitudinal proportion is reduced, a large amount of space is saved, favorable conditions are created for the reasonable layout of other components inside the aircraft, and the overall performance of the aircraft is improved and the design is optimized.

[0029] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or only indicate that first feature horizontal height is higher than second feature. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or only indicate that first feature horizontal height is less than second feature.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model are possible without departing from the spirit and scope of the utility model, and all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. Semi-rigid rotor head comprising an electric motor (1) and a connecting hub (2), characterized in that: The surface of the connecting hub (2) is provided with a connecting block (5), the side surface of the connecting block (5) is provided with a flap hub (3), the two sides of the flap hub (3) are provided with flap bearings (7), the interiors of the two flap bearings (7) are provided with flap shafts (8), the side surface of the flap hub (3) is provided with a paddle clamp (4), and the surface of the paddle clamp (4) is provided with a paddle blade (13).

2. The semi-rigid rotor head of claim 1, wherein: The output end of the motor (1) is provided with a rotating shaft (6), the connecting hub (2) is arranged on the surface of the rotating shaft (6), and the motor (1) is rotationally connected with the connecting hub (2) through the rotating shaft (6).

3. The semi-rigid rotor head of claim 1, wherein: The connecting block (5) is arranged on the surface of the connecting hub (2) in an axisymmetric mode, and the position of the connecting block (5) corresponds to the flap bearing (7); the flap shaft (8) is fixedly connected with the connecting block (5).

4. The semi-rigid rotor head of claim 1, wherein: The shape and position of the connecting hub (2) are matched with the flap hub (3), and the paddle clamp (4) and the paddle blade (13) are arranged in two groups in an axisymmetric mode.

5. The semi-rigid rotor head of claim 1, wherein: The two sides of the flap hub (3) are provided with first positioning holes (9), and the top surface and the bottom surface of the paddle clamp (4) are provided with second positioning holes (11).

6. The semi-rigid rotor head of claim 5, wherein: The surface of the first positioning hole (9) is provided with a first positioning pin (10), and the surface of the second positioning hole (11) is provided with a second positioning pin (12).

7. The semi-rigid rotor head of claim 6, wherein: The flap hub (3) is fixedly connected with the paddle clamp (4) through the first positioning pin (10), and the paddle clamp (4) is fixedly connected with the paddle blade (13) through the second positioning pin (12).

Images