Unmanned aerial vehicle rotor device and unmanned aerial vehicle

Abstract

The application relates to the technical field of unmanned planes, and discloses an unmanned plane rotor device, which comprises a machine arm assembly, a motor assembly, a damping assembly, a folding blade assembly and a folding blade limiting assembly. When the unmanned plane needs to work, the folding blades in the folding blade assembly are unfolded in parallel, the folding blade limiting assembly is fixed on the blade pressing sheet through a quick-release mechanism, the folding blades are clamped between the limiting blocks, and the unfolded state of the folding blades is fixed and kept. When the motor assembly is started to output power torque, the folding blades will not produce larger vibration to the unmanned plane body and application equipment due to the uneven force and the deviation. Meanwhile, the damping assembly is in a working state, the damping rubber sleeve blocks and filters the vibration generated by the rotation of the motor assembly and the folding blade assembly, and effectively prevents the vibration from being transmitted to the unmanned plane body and the application equipment. The application further provides an unmanned plane comprising the above rotor device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicle, in particular to an unmanned aerial vehicle rotor device and unmanned aerial vehicle. BACKGROUND

[0002] In recent years, with the rapid development of unmanned aerial vehicle technology, the multi-rotor unmanned aerial vehicle has the advantages of agility, lightness, hovering, and arbitrary take-off and landing, and is widely used in power line patrol, traffic monitoring, land surveying, ocean and water conservancy monitoring, and other application fields.

[0003] With the increasing application occasions, the weight demand of the unmanned aerial vehicle is also increasing, and the size requirement of the power propeller of such unmanned aerial vehicle is also increasing, which causes trouble in transportation and storage. Therefore, the application of foldable propeller can greatly reduce the overall size of the machine body and facilitate storage and transportation.

[0004] The existing foldable propeller is usually directly fixed and rigidly connected with the motor power assembly, and the imbalance and rotational vibration of the foldable propeller are directly transmitted to the machine body shell and the mounted equipment, which seriously affects the measurement and judgment of precision sensors such as inertial navigation and accelerometer, and causes problems such as decline of aircraft flight performance and measurement data error of mounted equipment.

[0005] At present, the foldable propeller and the propeller fixing seat are rotationally connected, and the folding is realized by rotation of the foldable propeller. However, after the foldable propeller is unfolded, the motor output torque during the rotation of the rotor causes the foldable propeller to be easily offset due to uneven force, resulting in imbalance of the foldable propeller and generating large vibration which is transmitted to the unmanned aerial vehicle body and application equipment. SUMMARY

[0006] The purpose of the present application is to provide an unmanned aerial vehicle rotor device and unmanned aerial vehicle with reduced vibration and good stability.

[0007] In order to achieve the above purpose, the present application provides an unmanned aerial vehicle rotor device, which comprises a foldable propeller assembly and a foldable propeller limiting assembly. The foldable propeller assembly comprises a foldable propeller and a propeller mounting mechanism, and the foldable propeller is rotationally connected to the propeller mounting mechanism. The foldable propeller limiting assembly comprises a propeller limiting piece, which is detachably connected to the propeller mounting mechanism. The propeller limiting piece is provided with a limiting mechanism, and the limiting mechanism comprises at least two limiting blocks which are distributed on both sides of the foldable propeller.

[0008] As a preferred scheme, the foldable propeller limiting assembly further comprises a quick release mechanism, and the propeller limiting piece is connected to the propeller mounting mechanism through the quick release mechanism.

[0009] As a preferred solution, the quick release mechanism comprises a quick release knob, a quick release reset spring and a quick release positioning pin, the quick release knob comprises a knob shaft and a knob head connected together, the knob shaft is provided with a pin hole, the quick release positioning pin passes through the pin hole, and the quick release positioning pin is perpendicular to the knob shaft;

[0010] The paddle limiting piece is provided with a first connecting hole penetrating through, the knob shaft passes through the first connecting hole, the knob head and the quick release positioning pin are located on both sides of the paddle limiting piece, the quick release reset spring is sleeved outside the knob shaft and located in the first connecting hole, and the quick release reset spring is located between the knob head and the quick release positioning pin.

[0011] The paddle mounting mechanism is provided with a second connecting hole penetrating through, and the side of the paddle mounting mechanism away from the paddle limiting piece is provided with two clamping grooves in communication with the second connecting hole, and the two clamping grooves are located on the same straight line.

[0012] When the paddle limiting piece is connected with the paddle mounting mechanism, the knob shaft and the quick release positioning pin pass through the second connecting hole, and the knob shaft can rotate, so that the two ends of the quick release positioning pin can be clamped into the two clamping grooves.

[0013] As a preferred solution, the quick release mechanism further comprises a positioning piece, the positioning piece is a cylinder, the positioning piece is coaxially arranged with the first connecting hole, the positioning piece and the quick release positioning pin are located on the same side of the paddle limiting piece, one end of the positioning piece is connected with the paddle limiting piece, and the other end of the positioning piece is provided with four positioning notches, and the four positioning notches are spaced apart at an angle of 90°.

[0014] As a preferred solution, the paddle mounting mechanism comprises a paddle fixing seat, a paddle pressing sheet and a fastening bolt, the paddle fixing seat is provided with a mounting column, the end of the folding paddle is provided with a first mounting hole, the folding paddle is sleeved on the mounting column through the first mounting hole, the mounting column is provided with a second mounting hole, the paddle pressing sheet is provided with a third mounting hole, the fastening bolt passes through the third mounting hole and is threadedly connected with the second mounting hole, so that the head of the folding paddle is located between the paddle pressing sheet and the paddle fixing seat, and the second connecting hole and the clamping groove are arranged on the paddle pressing sheet.

[0015] As a preferred solution, it further comprises an arm assembly, a motor assembly and a damping assembly, the arm assembly comprises an arm fixing seat and an arm connecting pipe connected together, the arm connecting pipe is used for connecting a drone body, the motor assembly is flexibly connected with the arm fixing seat through the damping assembly, and the motor assembly is connected with the paddle mounting mechanism to drive the folding paddle assembly to rotate.

[0016] As a preferred scheme, the motor assembly comprises a motor, the damping assembly comprises a damping fixing base and a damping rubber sleeve, the arm fixing base is provided with an accommodating cavity with an opening, the damping fixing base is located in the accommodating cavity, and the damping fixing base is connected with the motor through the opening.

[0017] As a preferred scheme, the damping assembly further comprises an adjusting bolt, the damping fixing base is provided with a sleeve mounting hole, the damping rubber sleeve has rubber holes penetrating through two ends thereof, the damping rubber sleeve comprises a first rubber part, a second rubber part and a third rubber part connected in sequence, the diameters of the first rubber part and the third rubber part are greater than that of the second rubber part, the damping rubber sleeve passes through the sleeve mounting hole, the second rubber part is located in the sleeve mounting hole, the first rubber part and the third rubber part are located on two sides of the damping fixing base, the adjusting bolt passes through the rubber hole and is connected with the arm fixing base, the first rubber part is located between the damping fixing base and the arm fixing base, and the third rubber part is located between the damping fixing base and a bolt head of the adjusting bolt.

[0018] As a preferred scheme, the damping assembly further comprises a sleeve gasket, the sleeve gasket is sleeved outside the adjusting bolt, and the sleeve gasket is located between the bolt head of the adjusting bolt and the third rubber part, and the diameter of the sleeve gasket is greater than that of the third rubber part.

[0019] The application further provides a UAV, comprising a UAV body and the UAV rotor device.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] The folding prop limiting assembly is provided, the blade limiting piece of the folding prop limiting assembly is provided with a limiting block, the folding prop limiting assembly is installed on the folding prop limiting assembly after the folding prop blade is unfolded in place, the folding prop blade is clamped between two or more limiting blocks, so that the folding prop blade is limited to continue rotating, the folding prop blade is prevented from deviating during work, the imbalance of the prop blade is solved, vibration is reduced, the power efficiency and stability of the folding prop are improved, and the output response of the power assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the UAV rotor device of the embodiment of the application.

[0023] Figure 2is a folding storage state diagram of the propeller of the unmanned aerial vehicle rotor device of the embodiment of the present application.

[0024] Figure 3 is an unfolding explosion diagram of the unmanned aerial vehicle rotor device of the embodiment of the present application.

[0025] Figure 4 is an explosion diagram of the folding propeller assembly and the folding propeller limiting assembly of the embodiment of the present application.

[0026] Figure 5 is an assembly sectional view of the folding propeller assembly and the folding propeller limiting assembly of the embodiment of the present application.

[0027] Figure 6 is a mounting state side view of the propeller fixing seat and the folding propeller limiting assembly of the embodiment of the present application.

[0028] Figure 7 is a mounting state top view of the propeller fixing seat and the folding propeller limiting assembly of the embodiment of the present application.

[0029] Figure 8 is a dismounting state side view of the propeller fixing seat and the folding propeller limiting assembly of the embodiment of the present application.

[0030] Figure 9 is a dismounting state top view of the propeller fixing seat and the folding propeller limiting assembly of the embodiment of the present application.

[0031] Figure 10 is a sectional view of the unmanned aerial vehicle rotor device of the embodiment of the present application.

[0032] Figure 11 is Figure 10 An enlarged view at A.

[0033] In the figure, 100-folding propeller assembly; 110-folding propeller; 111-first mounting hole; 120-propeller fixing seat; 121-mounting column; 122-second mounting hole; 130-propeller pressing sheet; 131-second connecting hole; 1311-shaft passing part; 1312-pin passing part; 132-positioning hole; 133-clamping groove; 134-third mounting hole; 140-fastening bolt; 150-wear-resistant gasket;

[0034] 200-folding propeller limiting assembly; 210-propeller limiting piece; 211-first connecting hole; 212-positioning block; 220-limiting block; 230-quick release knob; 231-knob shaft; 232-knob head; 233-pin hole; 240-quick release reset spring; 250-quick release positioning pin; 260-positioning piece; 261-positioning notch; 270-pin retaining screw;

[0035] 300 - arm assembly; 310 - arm fixing base; 311 - accommodating cavity; 312 - opening; 320 - arm connecting pipe; 330 - locking bolt;

[0036] 400 - motor assembly; 410 - motor; 420 - paddle adapter;

[0037] 500 - damping assembly; 510 - damping fixing base; 520 - damping rubber sleeve; 521 - first rubber part; 522 - second rubber part; 523 - third rubber part; 530 - adjusting bolt; 540 - rubber sleeve gasket. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0042] Example one

[0043] As Figures 1 to 11As shown, the unmanned aerial vehicle rotor device of the preferred embodiment of the present application comprises a folding blade assembly 100 and a folding blade limiting assembly 200. The folding blade assembly 100 comprises a folding blade 110 and a blade mounting mechanism. The folding blade 110 is rotationally connected to the blade mounting mechanism. The folding blade limiting assembly 200 comprises a blade limiting piece 210. The blade limiting piece 210 is detachably connected to the blade mounting mechanism. The blade limiting piece 210 is provided with a limiting mechanism. The limiting mechanism comprises at least two limiting blocks 220. The limiting blocks 220 are distributed on both sides of the folding blade 110. In this embodiment, the folding blade limiting assembly 200 is provided. The blade limiting piece 210 of the folding blade limiting assembly 200 is provided with the limiting blocks 220. After the folding blade 110 is unfolded in place, the folding blade limiting assembly 200 is mounted on the folding blade assembly 100. The folding blade 110 is clamped between the two or more limiting blocks 220. The rotation of the folding blade 110 is limited. The deviation of the folding blade 110 during work is prevented. The imbalance of the blade is solved. The vibration is reduced. The power efficiency and stability of the folding blade are improved. The output response of the power assembly is improved.

[0044] Optionally, the folding blade limiting assembly 200 of the embodiment further comprises a quick release mechanism. The blade limiting piece 210 is connected to the blade mounting mechanism through the quick release mechanism. The quick release mechanism is adopted. The mounting and dismounting are more convenient.

[0045] Embodiment two

[0046] The difference between this embodiment and embodiment one is that, on the basis of embodiment one, the folding blade assembly and the folding blade limiting assembly 200 are further described in this embodiment.

[0047] In this embodiment, the quick release mechanism comprises a quick release knob 230, a quick release reset spring 240 and a quick release positioning pin 250. The quick release knob 230 comprises a knob shaft 231 and a knob head 232 connected to each other. The knob shaft 231 is provided with a pin hole 233. The quick release positioning pin 250 passes through the pin hole 233. The quick release positioning pin 250 is perpendicular to the knob shaft 231.

[0048] The blade limiting piece 210 is provided with a first connecting hole 211. The knob shaft 231 passes through the first connecting hole 211. The knob head 232 and the quick release positioning pin 250 are located on both sides of the blade limiting piece 210. The quick release reset spring 240 is sleeved on the outside of the knob shaft 231 and located in the first connecting hole 211. The quick release reset spring 240 is located between the knob head 232 and the quick release positioning pin 250.

[0049] The blade mounting mechanism is provided with a second connecting hole 131. The side of the blade mounting mechanism away from the blade limiting piece 210 is provided with two clamping grooves 133 in communication with the second connecting hole 131. The two clamping grooves 133 are located on the same straight line.

[0050] When the paddle limiting member 210 is connected with the paddle mounting mechanism, the knob shaft 231 and the quick release positioning pin 250 pass through the second connecting hole 131, and the knob shaft 231 can rotate, so that the two ends of the quick release positioning pin 250 can be clamped into the two clamping grooves 133.

[0051] As shown in Figure 7 and Figure 9 , the embodiment further sets the locking, unlocking and screwing direction marks on the top surface of the quick release knob 230, and sets the triangular arrow indicating marks on the top surface of the paddle limiting member 210. After the quick release knob 230 is inserted into the second connecting hole 131, the quick release knob 230 is pressed, the quick release reset spring 240 is compressed to the bottom position, and according to the screwing direction on the quick release knob 230, the locking mark is screwed to the triangular arrow indicating position of the paddle limiting member 210. At this time, the quick release reset spring 240 automatically pushes the quick release knob 230 back, so that the quick release positioning pin 250 on the quick release knob 230 is embedded into the clamping groove 133, and the installation of the folding paddle limiting assembly 200 is completed.

[0052] Similarly, when the folding paddle limiting assembly 200 needs to be disassembled, the quick release knob 230 is pressed, the quick release reset spring 240 is compressed to the bottom position, and according to the screwing direction on the quick release knob 230, the unlocking mark is screwed to the triangular arrow indicating position of the paddle limiting member 210. At this time, the quick release reset spring 240 automatically pushes the quick release knob 230 to disengage from the paddle mounting mechanism of the folding paddle assembly 100, and the disassembly of the folding paddle limiting assembly 200 is completed.

[0053] Figure 2 The paddle folding and storage state diagram is shown. When the folding paddle limiting assembly 200 is disassembled and removed, the folding paddle 110 in the parallel unfolded state can be folded and stored, which greatly reduces the storage space of the power assembly, and facilitates the storage and transportation of the whole machine.

[0054] Therefore, through the folding paddle limiting assembly 200, the folding paddle assembly 100 is limited and fixed when the folding paddle 110 is unfolded and works, which can reduce the vibration of the folding paddle 110 in the rotating motion.

[0055] In addition, the quick release mechanism of the embodiment further comprises a positioning member 260, which is a cylinder and coaxially arranged with the first connecting hole 211. The positioning member 260 and the quick release positioning pin 250 are located on the same side of the paddle limiting member 210. One end of the positioning member 260 is connected with the paddle limiting member 210, and the other end of the positioning member 260 is provided with four positioning notches 261, which are spaced apart by 90°. The opposite two positioning notches 261 are respectively used for clamping the two ends of the quick release positioning pin 250. The two pairs of positioning notches 261 are respectively used for positioning when the folding paddle limiting assembly 200 and the folding paddle assembly 100 are installed and disassembled. The positioning notches 261 are used for facilitating the quick release knob 230 to be quickly rotated into position during installation and disassembly. In the embodiment, the positioning member 260 is actually integrated with the paddle limiting member 210.

[0056] In addition, the paddle limiting member 210 is further provided with two positioning blocks 212, which are located on the same side of the paddle limiting member 210 as the quick release positioning pin 250. The first connecting hole 211 is located between the two positioning blocks 212. The paddle mounting mechanism is provided with a positioning hole 132 for inserting the positioning block 212. When the folding paddle limiting assembly 200 and the folding paddle assembly 100 are installed, the positioning block 212 is inserted into the positioning hole 132, which is used for positioning and installing the folding paddle limiting assembly 200.

[0057] In addition, the second connecting hole 131 comprises a shaft passing portion 1311 and two pin passing portions 1312. The two pin passing portions 1312 are located on both sides of the shaft passing portion 1311. The diameter of the shaft passing portion 1311 is smaller than the length of the quick release positioning pin 250. The sum of the lengths of the shaft passing portion 1311 and the two pin passing portions 1312 is greater than or equal to the length of the quick release positioning pin 250. During installation, the shaft passing portion 1311 is used for the rotation knob shaft 231 to pass through, and the pin passing portion 1312 is used for the quick release positioning pin 250 to pass through, thereby ensuring the direction of the quick release positioning pin 250 when the folding paddle limiting assembly 200 is installed, so as to facilitate the subsequent rotation of the quick release knob 230.

[0058] The quick release mechanism of the embodiment further comprises a pin tightening screw 270. The bottom surface of the rotation knob shaft 231 is provided with a tightening hole communicating with the pin hole 233. The quick release positioning pin 250 is provided with a tightening groove, which is a flat groove. The pin tightening screw 270 passes through the tightening hole and is inserted into the tightening groove, and the pin tightening screw 270 is threadedly connected with the tightening hole. The pin tightening screw 270 is used for end face fixing of the quick release positioning pin 250, which avoids the problem of vibration and slipping of the quick release positioning pin 250.

[0059] Optionally, in the embodiment, the paddle mounting mechanism comprises a paddle fixing seat 120, a paddle pressing plate 130 and a fastening bolt 140, the paddle fixing seat 120 is provided with a mounting column 121, the end of the folding paddle 110 is provided with a first mounting hole 111, the folding paddle 110 is sleeved on the mounting column 121 through the first mounting hole 111, the mounting column 121 is provided with a second mounting hole 122, the paddle pressing plate 130 is provided with a third mounting hole 134, the fastening bolt 140 passes through the third mounting hole 134 and is threadedly connected with the second mounting hole 122, so that the head of the folding paddle 110 is located between the paddle pressing plate 130 and the paddle fixing seat 120, and the second connecting hole 131, the clamping groove 133 and the positioning hole 132 are arranged on the paddle pressing plate 130. In addition, the paddle mounting mechanism further comprises wear-resistant gaskets 150, and the wear-resistant gaskets 150 are arranged between the bolt head of the fastening bolt 140 and the paddle pressing plate 130 and between the paddle pressing plate 130 and the paddle fixing seat 120. The wear-resistant gaskets 150 are made of self-lubricating material, which replaces the rotating friction between the folding paddle 110 and the paddle fixing seat 120 and the paddle pressing plate 130, thereby increasing the service life of the folding paddle assembly 100 as a vulnerable accessory.

[0060] The other structures of the embodiment are the same as those of Embodiment One, which will not be described here.

[0061] Embodiment Three

[0062] The difference between the embodiment and Embodiment Two is that, on the basis of Embodiment Two, the rotor device of the embodiment further comprises a boom assembly 300, a motor assembly 400 and a damping assembly 500.

[0063] In the embodiment, the unmanned aerial vehicle rotor device further comprises the boom assembly 300, the motor assembly 400 and the damping assembly 500, the boom assembly 300 comprises a boom fixing seat 310 and a boom connecting pipe 320 connected with each other, the boom connecting pipe 320 is used for connecting the unmanned aerial vehicle body, the motor assembly 400 is flexibly connected with the boom fixing seat 310 through the damping assembly 500, and the motor assembly 400 is connected with the paddle mounting mechanism to drive the folding paddle assembly 100 to rotate. The motor assembly 400 is flexibly connected with the boom fixing seat 310 through the damping assembly 500, which effectively blocks the vibration noise generated by the filtering power assembly, and greatly improves the flight state stability of the aircraft.

[0064] The motor assembly 400 of the embodiment is flexibly connected with the boom fixing seat 310 through the damping assembly 500, so that the motor assembly 400 can produce axial contraction, thereby eliminating the imbalance of the folding paddle 110 and the vibration when the motor assembly 400 works.

[0065] In the boom assembly 300, the boom fixing seat 310 assembly is the basic fixed structure of the power assembly.

[0066] The motor assembly 400 comprises a motor 410, the damping assembly 500 comprises a damping fixing seat 510 and a damping rubber sleeve 520, the arm fixing seat 310 is provided with a containing cavity 311 with an opening 312, the damping fixing seat 510 is located in the containing cavity 311, the damping fixing seat 510 is connected with the motor 410 through the opening 312, and the damping rubber sleeve 520 is arranged between the damping fixing seat 510 and the cavity wall of the containing cavity 311 provided with the opening 312. The damping rubber sleeve 520 is deformable and recoverable, and can absorb the imbalance of the folding paddle 110 and the vibration during the operation of the motor assembly 400.

[0067] The arm fixing seat 310 assembly further comprises a locking bolt 330, the arm fixing seat 310 connects the damping fixing seat 510 and the motor 410 through the locking bolt 330. The motor assembly 400 further comprises a paddle adapter 420, and the motor assembly 400 is connected with the paddle fixing seat 120 through the paddle adapter 420.

[0068] The damping assembly 500 further comprises an adjusting bolt 530, the damping fixing seat 510 is provided with a rubber sleeve mounting hole, the damping rubber sleeve 520 has rubber holes penetrating through two ends thereof, the damping rubber sleeve 520 comprises a first rubber part 521, a second rubber part 522 and a third rubber part 523 connected in sequence, the diameters of the first rubber part 521 and the third rubber part 523 are greater than that of the second rubber part 522, the damping rubber sleeve 520 passes through the rubber sleeve mounting hole, the second rubber part 522 is located in the rubber sleeve mounting hole, the first rubber part 521 and the third rubber part 523 are located on two sides of the damping fixing seat 510, the adjusting bolt 530 passes through the rubber hole and is connected with the arm fixing seat 310, the first rubber part 521 is located between the damping fixing seat 510 and the arm fixing seat 310, and the third rubber part 523 is located between the damping fixing seat 510 and the bolt head of the adjusting bolt 530.

[0069] In the embodiment, the middle part of the adjusting bolt 530 is a light shaft, the damping rubber sleeve 520 is sleeved on the middle part of the adjusting bolt 530, the thread of the adjusting bolt 530 can be prevented from damaging the damping rubber sleeve 520, and the service life is prolonged. The end, away from the bolt head, of the adjusting bolt 530 is provided with an external thread, the cavity wall of the containing cavity is provided with a fixing hole, and the adjusting bolt 530 passes through the damping rubber sleeve 520 and is threadedly connected with the fixing hole.

[0070] In addition, the damping assembly 500 further comprises a rubber sleeve gasket 540, the rubber sleeve gasket 540 is sleeved on the adjusting bolt 530, and the rubber sleeve gasket 540 is located between the bolt head of the adjusting bolt 530 and the third rubber part 523. The diameter of the rubber sleeve gasket 540 is greater than that of the third rubber part 523. The rubber sleeve gasket 540 increases the fixed contact area of the damping rubber sleeve 520, reduces the stress concentration of the deformation of the damping rubber sleeve 520, and avoids the problem that stress concentration accelerates the aging of the damping rubber sleeve 520.

[0071] The end of the adjusting bolt 530 is smaller in diameter than the middle part, which is stepped. According to the height of the damping rubber sleeve 520 and the thickness of the rubber sleeve gasket 540, the length of the middle part of the adjusting bolt 530 is matched and arranged, the adjusting bolt 530 is fastened on the arm fixing seat 310, the damping rubber sleeve 520 is pressed tightly on the damping fixing seat 510 in double layers, and a preset compression amount is assembled. The pre-tightening force of the damping fixing seat 510 is adjusted by assembling the compression amount, and the damping strength is adjusted.

[0072] The other structures of the embodiment are the same as those of the second embodiment, and details are not repeated here.

[0073] Embodiment Four

[0074] The unmanned aerial vehicle provided by the embodiment of the present application comprises: an unmanned aerial vehicle body and the unmanned aerial vehicle rotor device of the first embodiment or the second embodiment or the third embodiment. The unmanned aerial vehicle rotor device is connected with the unmanned aerial vehicle body, and specifically, the unmanned aerial vehicle rotor device is connected with the unmanned aerial vehicle body through the arm connecting pipe 320 thereof.

[0075] The working process of the present application is as follows: when the unmanned aerial vehicle needs to work, the folding blades 110 in the folding blade assembly 100 are unfolded in parallel, the folding blade limiting assembly 200 is fixed on the blade pressing plate 130 through the quick release mechanism, the folding blades 110 are clamped between the limiting blocks 220, and the unfolded state of the folding blades 110 is fixed and maintained. When the motor assembly 400 outputs power torque, the folding blades 110 will not be offset due to uneven force and will not produce large vibration to the unmanned aerial vehicle body and application equipment. At the same time, the damping assembly 500 is in working state, the damping rubber sleeve 520 blocks and filters the vibration generated by the rotation of the motor assembly 400 and the folding blade assembly 100, and effectively isolates the vibration from being transmitted to the unmanned aerial vehicle body and application equipment.

[0076] In summary, the unmanned aerial vehicle rotor device provided by the embodiment of the present application sets the folding prop limiting assembly 200, the blade limiting piece 210 of the folding prop limiting assembly 200 is provided with the limiting block 220, the folding prop limiting assembly 200 is installed on the folding prop blade assembly 100 after the folding prop blade 110 is unfolded to the position, the folding prop blade 110 is clamped between two or more limiting blocks 220, so that the folding prop blade 110 is limited to continue to rotate, the deviation of the folding prop blade 110 in the working state is prevented, the imbalance of the propeller is solved, the vibration is reduced, the power efficiency and stability of the folding prop are improved, and the output response of the power assembly is improved. In addition, the motor 410 of the embodiment of the present application is connected with the arm assembly 300 through the damping fixing seat 510, the damping fixing seat 510 is flexibly connected with the arm assembly 300, the vibration noise generated by the filtering power assembly is effectively blocked, and the flight state stability of the aircraft is greatly improved. Therefore, the unmanned aerial vehicle damping assembly 500 is flexibly connected, the vibration noise generated by the filtering power assembly is effectively blocked, and the flight state stability of the aircraft is greatly improved. The folding prop limiting assembly 200 is used to limit the folding prop blade 110, the influence of the imbalance vibration of the propeller is reduced, the power efficiency of the folding prop is improved, and the output response of the power assembly is improved. The folding prop limiting assembly 200 is connected with the folding prop blade assembly 100 through the quick release mechanism, the quick release mechanism is automatically reset and locked through the knob, the quick prop limiting and fixing and unlocking folding functions are realized.

[0077] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should be considered as the protection scope of the present application.

Claims

1. A rotor device for an unmanned aerial vehicle (UAV), characterized in that, The device includes a folding blade assembly (100) and a folding blade limiting assembly (200). The folding blade assembly (100) includes a folding blade (110) and a blade mounting mechanism. The folding blade (110) is rotatably connected to the blade mounting mechanism. The folding blade limiting assembly (200) includes a blade limiting member (210). The blade limiting member (210) is detachably connected to the blade mounting mechanism. The blade limiting member (210) is provided with a limiting mechanism. The limiting mechanism includes at least two limiting blocks (220). The limiting blocks (220) are distributed on both sides of the folding blade (110). The folding propeller limiting assembly (200) also includes a quick-release mechanism, and the propeller limiting member (210) is connected to the propeller mounting mechanism through the quick-release mechanism; The quick-release mechanism includes a quick-release knob (230), a quick-release return spring (240), and a quick-release positioning pin (250). The quick-release knob (230) includes a knob shaft (231) and a knob head (232) connected to each other. The knob shaft (231) is provided with a pin hole (233). The quick-release positioning pin (250) passes through the pin hole (233) so that the quick-release positioning pin (250) is perpendicular to the knob shaft (231). The blade limiting member (210) is provided with a through first connecting hole (211), the knob shaft (231) passes through the first connecting hole (211), so that the knob head (232) and the quick-release positioning pin (250) are located on both sides of the blade limiting member (210), the quick-release return spring (240) is fitted outside the knob shaft (231) and located in the first connecting hole (211), and the quick-release return spring (240) is located between the knob head (232) and the quick-release positioning pin (250); The blade mounting mechanism is provided with a through second connecting hole, and the blade mounting mechanism is provided with two slots (133) communicating with the second connecting hole on the side away from the blade limiting member (210), and the two slots (133) are located on the same straight line; When the blade limiting member (210) is connected to the blade mounting mechanism, the knob shaft (231) and the quick-release positioning pin (250) pass through the second connecting hole, and the knob shaft (231) can rotate so that the two ends of the quick-release positioning pin (250) can be engaged in the two slots (133). The quick-release mechanism also includes a positioning component (260), which is a cylindrical body. The positioning component (260) is coaxially arranged with the first connecting hole (211). The positioning component (260) and the quick-release positioning pin (250) are located on the same side of the blade limiting component (210). One end of the positioning component (260) is connected to the blade limiting component (210), and the other end of the positioning component (260) is provided with four positioning notches (261), which are spaced 90° apart. It also includes an arm assembly (300), a motor assembly (400), and a shock-absorbing assembly (500). The arm assembly (300) includes an arm mounting base (310) and an arm connecting pipe (320) connected together. The arm connecting pipe (320) is used to connect to the fuselage of the UAV. The motor assembly (400) is flexibly connected to the arm mounting base (310) through the shock-absorbing assembly (500). The motor assembly (400) is connected to the propeller mounting mechanism to drive the folding propeller assembly (100) to rotate. The motor assembly (400) includes a motor (410), the shock absorption assembly (500) includes a shock absorption mounting base (510) and a shock absorption sleeve (520), the arm mounting base (310) is provided with a receiving cavity (311) with an opening (312), the shock absorption mounting base (510) is located in the receiving cavity (311), the shock absorption mounting base (510) is connected to the motor (410) through the opening (312), and the shock absorption sleeve (520) is provided between the shock absorption mounting base (510) and the cavity wall of the receiving cavity (311) where the opening (312) is provided; The shock-absorbing assembly (500) further includes an adjusting bolt (530). The shock-absorbing mounting base (510) is provided with a rubber sleeve mounting hole. The shock-absorbing rubber sleeve (520) has rubber holes penetrating both ends. The shock-absorbing rubber sleeve (520) includes a first rubber part (521), a second rubber part (522), and a third rubber part (523) connected in sequence. The diameters of the first rubber part (521) and the third rubber part (523) are larger than the diameter of the second rubber part (522). The shock-absorbing rubber sleeve (520) passes through the rubber sleeve mounting hole, so that the... The second adhesive part (522) is located in the mounting hole of the adhesive sleeve, the first adhesive part (521) and the third adhesive part (523) are located on both sides of the shock-absorbing fixing seat (510), the adjusting bolt (530) passes through the adhesive hole and is connected to the arm fixing seat (310), the first adhesive part (521) is located between the shock-absorbing fixing seat (510) and the arm fixing seat (310), and the third adhesive part (523) is located between the shock-absorbing fixing seat (510) and the bolt head of the adjusting bolt (530).

2. The UAV rotor device according to claim 1, characterized in that, The blade mounting mechanism includes a blade fixing seat (120), a blade clamping plate (130), and a fastening bolt (140). The blade fixing seat (120) is provided with a mounting post (121). The end of the folding blade (110) is provided with a first mounting hole (111). The folding blade (110) is sleeved on the mounting post (121) through the first mounting hole (111). The mounting post (121) is provided with a second mounting hole (122). The blade clamping plate (130) is provided with a third mounting hole (134). The fastening bolt (140) passes through the third mounting hole (134) and is threadedly connected to the second mounting hole (122), so that the head of the folding blade (110) is located between the blade clamping plate (130) and the blade fixing seat (120). The second connecting hole and the slot (133) are provided on the blade clamping plate (130).

3. The UAV rotor device according to claim 1, characterized in that, The shock-absorbing assembly (500) also includes a rubber sleeve gasket (540), which is fitted outside the adjusting bolt (530) and is located between the bolt head of the adjusting bolt (530) and the third rubber part (523). The diameter of the rubber sleeve gasket (540) is larger than the diameter of the third rubber part (523).

4. A drone, characterized in that, include: The drone fuselage and the drone rotor device according to any one of claims 1-3.

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