Arm and unmanned aerial vehicle

Abstract

The embodiment of the utility model provides a vehicle arm and an unmanned aerial vehicle, and relates to the technical field of aircrafts. Each arm comprises a driving assembly, a first connecting rod, a second connecting rod, a third connecting rod and a rotor wing; the driving assembly is connected with a fuselage of the unmanned aerial vehicle; the first connecting rod is rotationally connected with the fuselage; the driving assembly is configured to drive the first connecting rod to rotate relative to the machine body; the second connecting rod comprises a first connecting part and a second connecting part, one end of the first connecting part is connected with the third connecting rod, one end of the second connecting part is connected with the first connecting rod, and the other end of the first connecting part is rotationally connected with the other end of the second connecting part; the rotor is rotationally connected with the third connecting rod so that the angle of the rotor can be adjusted. According to the vehicle arm and the unmanned aerial vehicle, the flight form of the unmanned aerial vehicle can be converted by adjusting the form of the vehicle arm, the vehicle body is kept horizontal all the time in the flight process of the unmanned aerial vehicle, inspection of an auxiliary inspection device on the vehicle body is facilitated, air resistance is reduced, and the cruising ability is improved.

Description

Technical Field

[0001] The present application relates to the field of aircraft technology, and in particular to an aircraft arm and a drone. Background Art

[0002] Thermal power plants use combustible materials as fuel to produce electricity. To ensure their normal operation, regular inspections are required. Due to the densely packed equipment and complex spatial structure within thermal power plants, intelligent flight platforms such as small drones are needed to assist with these inspections.

[0003] In the existing technology, drones used for auxiliary inspections are equipped with inspection auxiliary devices on the fuselage, and at least four rotors are set around the fuselage. The lift is adjusted by adjusting the speed of the rotors to achieve vertical movement of the drone, and horizontal movement is achieved by tilting the fuselage. The flight patterns such as forward flight and turning are achieved by changing the speed difference between the rotors.

[0004] However, the above-mentioned drone can only achieve horizontal movement by tilting the entire fuselage. Tilting the fuselage will affect the detection of the inspection auxiliary device on the drone, and will increase the flight resistance, affecting the endurance of the drone. Utility Model Content

[0005] The embodiments of the present application provide an arm and a drone to solve the problem that existing drones need to tilt the fuselage to achieve horizontal movement, which affects the detection of inspection auxiliary devices on the fuselage, and the flight resistance is large, affecting the endurance of the drone.

[0006] In one aspect, an embodiment of the present application provides an arm for a drone, comprising a drive assembly, a first connecting rod, a second connecting rod, a third connecting rod, and a rotor;

[0007] The driving assembly is used to connect to the fuselage of the UAV, and the first connecting rod is used to be rotatably connected to the fuselage;

[0008] The driving assembly is configured to drive the first connecting rod to rotate relative to the fuselage;

[0009] The second connecting rod includes a first connecting portion and a second connecting portion, one end of the first connecting portion is connected to the third connecting rod, one end of the second connecting portion is connected to the first connecting rod, and the other end of the first connecting portion is rotatably connected to the other end of the second connecting portion;

[0010] The rotor is rotatably connected to the third connecting rod to adjust the angle of the rotor.

[0011] In one possible implementation, the machine arm provided in the embodiment of the present application, wherein the drive assembly includes a first mounting seat, a first drive member, and a gear;

[0012] One end of the first connecting rod has serrations;

[0013] The first mounting base is used to be connected to the fuselage, the first driving member is connected to the first mounting base, the gear is rotatably connected to the first mounting base, and the gear is engaged with the saw teeth;

[0014] The first driving member is configured to drive the gear to rotate relative to the first mounting seat so that the gear drives the first connecting rod to rotate.

[0015] In one possible implementation, in the machine arm provided in an embodiment of the present application, the first connecting rod includes a third connecting portion and a fourth connecting portion, and the third connecting portion is connected to the fourth connecting portion;

[0016] The third connecting portion is connected to the second connecting portion, and the saw teeth are provided on the fourth connecting portion;

[0017] The fourth connecting portion is provided with a connecting hole, which is used for rotational connection with the fuselage.

[0018] In one possible implementation, the machine arm provided in the embodiment of the present application further includes at least one connecting component;

[0019] The connecting assembly includes a first connecting member and a second connecting member, the first connecting member is arranged on one of the second connecting portion and the third connecting portion, and the second connecting member is arranged on the other of the second connecting portion and the third connecting portion;

[0020] The first connecting member is connected to the second connecting member.

[0021] In one possible implementation, the machine arm provided in the embodiment of the present application further includes a telescopic assembly;

[0022] The telescopic assembly includes a telescopic rod and a second driving member;

[0023] A sliding groove is provided on the second connecting rod along the length direction of the second connecting rod, the telescopic rod is slidably connected to the sliding groove, and the second driving member is provided on the second connecting rod;

[0024] The second driving member is configured to drive the telescopic rod to extend or retract into the sliding groove to adjust the length of the second connecting rod.

[0025] In one possible implementation, the machine arm provided in the embodiment of the present application further includes a tilting assembly;

[0026] The tilt assembly includes a second mounting seat, a tilt bracket, a third drive member, and a fourth drive member;

[0027] The second mounting seat is connected to an end of the third connecting rod away from the second connecting rod, and the third driving member is arranged on the second mounting seat;

[0028] The tilt bracket is rotatably connected to the second mounting seat, the rotor and the fourth driving member are both arranged on the tilt bracket, and the fourth driving member drives the rotor to rotate;

[0029] The third driving member is configured to drive the tilt bracket to rotate relative to the second mounting seat to adjust the angle of the rotor.

[0030] In one possible implementation, the machine arm provided in the embodiment of the present application further includes an electronic speed regulator;

[0031] The third connecting rod is provided with a mounting groove, the electronic speed regulator is arranged in the mounting groove, and the electronic speed regulator is electrically connected to the fourth driving member;

[0032] A cover plate is provided on the installation groove, and the cover plate is rotatably connected to the third connecting rod.

[0033] In one possible implementation, the machine arm provided in the embodiment of the present application further includes a rotating shaft and a locking member;

[0034] The third connecting rod has a mounting portion, which is located on the side of the mounting groove;

[0035] The rotating shaft is rotatably connected to the mounting portion, and the cover plate is fixedly connected to the rotating shaft;

[0036] The locking member is configured to lock or unlock the rotating shaft and the mounting portion.

[0037] In one possible implementation, the arm provided in the embodiment of the present application has at least one heat dissipation hole provided on the side wall of the mounting slot.

[0038] On the other hand, an embodiment of the present application provides a drone, comprising a fuselage and at least two of any of the above-mentioned arms arranged on the fuselage.

[0039] The embodiment of the present application provides an arm and a drone, wherein the arm includes a drive assembly, a first connecting rod, a second connecting rod, a third connecting rod and a rotor. The angle of the rotor is adjusted by rotating the rotor and the third connecting rod. When the drone needs to move in the vertical direction, the rotor remains horizontal so that the lift generated by the rotation of the rotor is in the vertical direction. When the drone needs to move in the horizontal direction, the rotor rotates relative to the third connecting rod and remains tilted. The horizontal component of force generated by the rotation of the rotor pushes the drone to move in the horizontal direction. The first connecting rod is rotationally connected to the fuselage, and the angle of the first connecting rod is adjusted by the drive assembly, which drives the second connecting rod, the third connecting rod and the rotor to rotate relative to the fuselage, changing the position of the rotor relative to the fuselage, thereby adjusting the horizontal direction of the drone and achieving flight states such as turning. The second connecting rod is folded by rotating the first connecting part and the second connecting part of the second connecting rod to adjust the overall shape of the arm and maintain the stability of the drone's flight. Therefore, the arm provided in this application can enable the UAV to achieve stable horizontal flight without tilting the fuselage, and realize the conversion of different flight forms such as turning in the horizontal direction, ensuring the stability of the UAV fuselage in different flight states, which is beneficial to ensuring the inspection quality of the inspection device on the fuselage, while reducing flight resistance and improving the endurance of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 A schematic diagram of the structure of the machine arm provided in an embodiment of the present application;

[0042] Figure 2 for Figure 1 A schematic structural diagram of the middle drive assembly and the first connecting rod;

[0043] Figure 3 A schematic structural diagram of the second connecting rod of the machine arm provided in an embodiment of the present application;

[0044] Figure 4 for Figure 3 Schematic diagram of the structure from another angle;

[0045] Figure 5 for Figure 3 AA sectional view;

[0046] Figure 6 A schematic structural diagram of the third connecting rod and rotor of the arm provided in an embodiment of the present application;

[0047] Figure 7 A schematic structural diagram of the mounting slot on the third connecting rod provided in an embodiment of the present application;

[0048] Figure 8 for Figure 7 Structural diagram from another angle;

[0049] Figure 9 for Figure 7 A structural diagram from another angle;

[0050] Figure 10 for Figure 9 BB cross-sectional view.

[0051] Description of reference numerals:

[0052] 100 - drive assembly; 110 - first mounting seat; 120 - gear;

[0053] 200 - first connecting rod; 210 - third connecting portion; 220 - fourth connecting portion; 221 - sawtooth; 222 - connecting hole;

[0054] 300 - second connecting rod; 310 - first connecting portion; 320 - second connecting portion; 330 - telescopic assembly; 331 - telescopic rod; 332 - second driving member; 340 - slide groove;

[0055] 400 - third connecting rod; 410 - mounting slot; 411 - heat dissipation hole; 420 - cover plate; 430 - rotating shaft; 440 - mounting portion;

[0056] 500-rotor;

[0057] 600-connection assembly; 610-first connection member; 620-second connection member;

[0058] 700 - tilting assembly; 710 - second mounting seat; 720 - tilting bracket; 730 - fourth driving member.

[0059] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0060] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0061] As the background art demonstrates, thermal power plants require small drones to assist with inspections. Existing drones used for these inspections achieve horizontal motion by tilting their fuselages, generating a horizontal force component on the rotors surrounding the fuselage. However, this tilt causes the attached inspection equipment to tilt, hindering its performance. Furthermore, this forward tilt increases the projected area of the fuselage in the direction of flight, further increasing drag and consuming more energy, impacting the drone's endurance.

[0062] To address the above technical issues, embodiments of the present application provide an arm and a drone. The arm includes a drive assembly, a first connecting rod, a second connecting rod, a third connecting rod, and a rotor. The drive assembly is fixed to the drone and is configured to drive the first connecting rod to rotate relative to the drone. The first connecting rod is rotationally connected to the drone. The second connecting rod has a second connecting portion connected to the first connecting rod, a first connecting portion connected to the third connecting rod, and the first connecting portion and the second connecting portion are rotationally connected. The rotor is rotationally connected to the third connecting rod. When the drone moves vertically, the rotor is adjusted to maintain a horizontal position. The lift generated by the rotor rotation is in the vertical direction, and the drone can be moved up and down by adjusting the rotation speed. When the drone moves horizontally, the rotor rotates relative to the third connecting rod to maintain the rotor's tilt. The rotor rotation generates a horizontal component of force, thereby achieving horizontal motion. Simultaneously, the drive assembly drives the first connecting rod to rotate relative to the drone, driving the rotor to move. This adjusts the rotor's horizontal position relative to the drone and changes the direction of the horizontal component of force, thereby enabling transitions to flight configurations such as turns. Furthermore, since adjusting the angles of the rotors and the first connecting rod can cause a slight deflection in the center of gravity of the drone's arms, configuring the second connecting rod as a foldable structure and rotating the first connecting portion relative to the second effectively adjusts the drone's center of gravity, ensuring flight stability. This allows the drone to move horizontally and transition between different flight modes, such as forward and turning, simply by adjusting the arms. This prevents the tilt of the fuselage from affecting the inspection quality of the auxiliary inspection device. It also reduces resistance during horizontal flight and improves the drone's endurance.

[0063] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following embodiments of the present application are described in conjunction with the accompanying drawings:

[0064] It should be noted that the arm provided in the embodiment of the present application can be applied to various different drones.

[0065] See also Figure 1 、 Figure 2 and Figure 3 As shown, the arm of an embodiment of the present application is used for a drone, and includes a drive assembly 100, a first connecting rod 200, a second connecting rod 300, a third connecting rod 400 and a rotor 500; the drive assembly 100 is used to connect to the fuselage of the drone, and the first connecting rod 200 is used to be rotatably connected to the fuselage; the drive assembly 100 is configured to drive the first connecting rod 200 to rotate relative to the fuselage; the second connecting rod 300 includes a first connecting part 310 and a second connecting part 320, one end of the first connecting part 310 is connected to the third connecting rod 400, one end of the second connecting part 320 is connected to the first connecting rod 200, and the other end of the first connecting part 310 is rotatably connected to the other end of the second connecting part 320; the rotor 500 is rotatably connected to the third connecting rod 400 to adjust the angle of the rotor 500.

[0066] In the embodiment of the present application, the driving assembly 100 is fixed on the fuselage of the drone, the first connecting rod 200 is rotatably connected to the drone, and the driving assembly 100 drives the first connecting rod 200 to move relative to the driving assembly 100 along the Figure 2 The first connecting rod 200 rotates in the direction of the middle arrow or in the opposite direction, and the second connecting rod 300, the third connecting rod 400 and the rotor 500 rotate together. The second connecting rod 300 includes a first connecting portion 310 and a second connecting portion 320. The first connecting portion 310 is rotatably connected to the second connecting portion 320. The first connecting portion 310 rotates relative to the second connecting portion 320 along the Figure 3 The rotor 500 is rotatably connected to the third connecting rod 400, and the rotor 500 is rotated relative to the third connecting rod 400 along the Figure 1 The direction of the lift generated by the rotation of the rotor 500 is adjusted by rotating in the direction of the middle arrow or in the opposite direction, so that the UAV can move in the horizontal or vertical direction.

[0067] When the rotor 500 remains horizontal, the lift generated by the rotation of the rotor 500 is vertically upward. By adjusting the rotation speed of the rotor 500 and changing the magnitude of the lift, the drone can be made to rise or fall; when the rotor 500 rotates relative to the third connecting rod 400 and remains tilted, the lift generated by the rotation of the rotor 500 is obliquely upward, and the horizontal component of the lift can push the drone to move in the horizontal direction. Adjusting the angle of the rotor 500 or the speed of rotation can change the magnitude of the horizontal component, thereby changing the speed at which the drone moves in the horizontal direction. The specific adjustment method is not limited in the embodiments of this application; when the first connecting rod 200 drives the rotor 500 to rotate relative to the fuselage, the inclination angle of the rotor 500 remains unchanged, but the inclination direction changes, thereby changing the direction of the horizontal component, thereby adjusting the forward direction of the drone.

[0068] Furthermore, during drone inspections, due to the complex internal structure of thermal power plants and the relatively narrow spaces in some areas, it is necessary to adjust the angle between the first connecting portion 310 and the second connecting portion 320 and fold the second connecting rod 300 to ensure that the drone can fly into the space to be inspected, thereby improving the drone's flight flexibility. Furthermore, adjusting the angles of the rotor 500 and the first connecting rod 200 may shift the drone's overall center of gravity. Rotating the first connecting portion 310 relative to the second connecting portion 320 adjusts the drone's center of gravity and ensures flight stability.

[0069] It should be noted that, when the first connecting part 310 rotates relative to the second connecting part 320 during the flight of the UAV, the third connecting rod 400 and the rotor 500 will be driven to rotate at the same time. Therefore, when adjusting the angle of the first connecting part 310, the rotor 500 needs to be rotated in the opposite direction by the same angle to ensure that the rotor 500 maintains its original angle unchanged, thereby ensuring the stability of the UAV flight.

[0070] In this way, the fuselage of the drone always remains level during flight, ensuring the stability of the inspection auxiliary device on the fuselage and its inspection quality. At the same time, the level fuselage can reduce the projection area of the fuselage in the direction of movement when the drone moves horizontally, reduce air resistance, and help improve the endurance of the drone.

[0071] The first connecting rod 200 and the second connecting rod 300, as well as the second connecting rod 300 and the third connecting rod 400, can be connected by threads, and the specific connection method is not limited in this embodiment of the application. The first connecting rod 200, the second connecting rod 300, and the third connecting rod 400 can all be configured as hollow structures while ensuring structural strength, thereby reducing the weight of the arms and thus the weight of the drone itself, thereby improving the drone's flexibility and endurance.

[0072] In some possible implementations, see Figure 1 and Figure 2 As shown, the driving assembly 100 of the embodiment of the present application includes a first mounting seat 110, a first driving member (not shown in the figure) and a gear 120; one end of the first connecting rod 200 has a serration 221; the first mounting seat 110 is used to connect to the fuselage, the first driving member is connected to the first mounting seat 110, the gear 120 is rotatably connected to the first mounting seat 110, and the gear 120 is engaged with the serration 221; the first driving member is configured to drive the gear 120 to rotate relative to the first mounting seat 110, so that the gear 120 drives the first connecting rod 200 to rotate.

[0073] In a specific implementation, the mounting base of the drive assembly 100 can be fixed to the drone body via bolts or other fasteners. The gear 120 engages with the serrations 221 on the first connecting rod 200. The first drive member drives the gear 120 to rotate, and the gear 120 drives the first connecting rod 200 to rotate relative to the drone body via the serrations 221, thereby adjusting the angle of the first connecting rod 200. The first drive member can be a device such as a motor, and its specific structure is not limited in this embodiment of the application, as long as it can drive the gear 120 to rotate.

[0074] Furthermore, by adjusting the angle through the gear 120, when the gear 120 does not rotate, the serrations 221 and the gear 120 engage, which can also lock the first connecting rod 200, effectively preventing the first connecting rod 200 from rotating on its own during the flight of the drone, thereby improving the stability of the arm.

[0075] In some possible implementations, see Figure 1 、 Figure 2 and Figure 3 As shown, the first connecting rod 200 of the embodiment of the present application includes a third connecting part 210 and a fourth connecting part 220, the third connecting part 210 is connected to the fourth connecting part 220; the third connecting part 210 is connected to the second connecting part 320, and the serrations 221 are arranged on the fourth connecting part 220; the fourth connecting part 220 is provided with a connecting hole 222, and the connecting hole 222 is used for rotational connection with the fuselage.

[0076] It is understood that a connecting hole 222 is provided on the fourth connecting portion 220 provided with the saw teeth 221, and the connecting hole 222 is rotatably connected to the connecting shaft on the fuselage. The specific connection method of the connecting hole 222 and the connecting shaft is not limited in the embodiment of the present application, and it is sufficient to enable the first connecting rod 200 to rotate around the connecting shaft. For example, the connecting hole 222 can be threadedly connected to the connecting shaft. In this way, when the first driving member drives the gear 120 to rotate, the gear 120 can drive the first connecting rod 200 to rotate around the connecting shaft through the saw teeth 221. Figure 2 The angle of the first connecting rod 200 can be adjusted by rotating in the direction of the arrow or in the opposite direction.

[0077] In addition, the connection method between the third connection part 210 and the second connection part 320 is not specifically limited in the embodiment of the present application. For example, the third connection part 210 can be threadedly connected to the second connection part 320, and the stability of the connection is improved by setting multiple turns of thread. At the same time, a magnetic part can be installed at the connection between the third connection part 210 and the second connection part 320. When assembling the arm, preliminary positioning is performed by the magnetic part, and then the connection is made by rotating the thread, making the assembly of the arm more convenient.

[0078] In some possible implementations, see Figures 1 to 4 As shown, the embodiment of the present application also includes at least one connecting component 600; the connecting component 600 includes a first connecting member 610 and a second connecting member 620, the first connecting member 610 is arranged on one of the second connecting part 320 and the third connecting part 210, and the second connecting member 620 is arranged on the other of the second connecting part 320 and the third connecting part 210; the first connecting member 610 is connected to the second connecting member 620.

[0079] In some embodiments, a connecting component 600 is provided on the second connecting part 320 and the third connecting part 210. When the second connecting part 320 and the third connecting part 210 are connected by a threaded connection, the connecting component 600 can prevent the second connecting part 320 and the third connecting part 210 from rotating relative to each other, causing their connection to loosen, thereby improving the stability of the second connecting part 320 and the third connecting part 210; when the shape of the second connecting part 320 and the third connecting part 210 is square or other shapes that are not suitable for connection by a threaded connection, multiple connecting components 600 can be arranged at intervals around the circumference of the second connecting part 320 and the third connecting part 210, and the second connecting part 320 and the third connecting part 210 are directly connected through the connecting component 600.

[0080] The specific structures of the first connecting member 610 and the second connecting member 620 are not limited in the present embodiment. For example, the connecting assembly 600 can be Figure 1 The push-type spring clip shown, the first connecting member 610 and the second connecting member 620 are respectively the hook and the clamping member of the spring clip, the clamping member is connected to the hook and is tightened by the spring to prevent it from falling off, thereby stably connecting the second connecting part 320 and the third connecting part 210.

[0081] In some possible implementations, see Figure 1 、 Figure 3 and Figure 5As shown, the embodiment of the present application also includes a telescopic assembly 330; the telescopic assembly 330 includes a telescopic rod 331 and a second driving member 332; a sliding groove 340 is opened on the second connecting rod 300 along the length direction of the second connecting rod 300, the telescopic rod 331 is slidably connected to the sliding groove 340, and the second driving member 332 is arranged on the second connecting rod 300; the second driving member 332 is configured to drive the telescopic rod 331 to extend or retract into the sliding groove 340 to adjust the length of the second connecting rod 300.

[0082] It is understandable that due to the complex internal space structure of a thermal power plant, the drone may need to pass through a relatively narrow space during auxiliary inspections. In order to ensure that the drone can pass smoothly, the embodiment of the present application sets a telescopic component 330 on the second connecting rod 300, wherein the telescopic component 330 can be set on the first connecting part 310 or on the second connecting part 320, or at the connection between the first connecting part 310 and the second connecting part 320. The specific position is not limited in the embodiment of the present application, as long as it can change the length of the second connecting rod 300.

[0083] Specifically, a slot 340 is defined on the second connecting rod 300, and the telescopic rod 331 is slidably connected to the slot 340. A second driving member 332 can be disposed within the slot 340, freeing up space outside the arm. The specific structure of the second driving member 332 is not limited in this application. For example, the second driving member 332 can be a hydraulic cylinder, with one end of the telescopic rod 331 connected to the hydraulic cylinder, and the other end connected to different components depending on the specific location of the telescopic assembly 330. For example, if the telescopic assembly 330 is disposed on the first connecting portion 310, the other end of the telescopic rod 331 is connected to the third connecting rod 400. If the telescopic assembly 330 is disposed on the second connecting portion 320, the other end of the telescopic rod 331 is connected to the first connecting rod 200. When the drone needs to fly into a smaller space, the second driving member 332 drives the telescopic rod 331 into the slot 340, shortening the overall length of the arm and thereby reducing the size of the drone, ensuring smooth passage. The second driving member 332 can also adjust the drone's center of gravity by pushing and pulling the telescopic rod 331.

[0084] In some possible implementations, see Figure 1 and Figure 6As shown, the embodiment of the present application also includes a tilt assembly 700; the tilt assembly 700 includes a second mounting seat 710, a tilt bracket 720, a third drive member (not shown in the figure) and a fourth drive member 730; the second mounting seat 710 is connected to the end of the third connecting rod 400 away from the second connecting rod 300, and the third drive member is arranged on the second mounting seat 710; the tilt bracket 720 is rotatably connected to the second mounting seat 710, the rotor 500 and the fourth drive member 730 are both arranged on the tilt bracket 720, and the fourth drive member 730 drives the rotor 500 to rotate; the third drive member is configured to drive the tilt bracket 720 to rotate relative to the second mounting seat 710 to adjust the angle of the rotor 500.

[0085] It should be noted that the rotor 500 is rotatably connected to the third connecting rod 400 via the tilt assembly 700, the second mounting seat 710 is fixed to the third connecting rod 400, the tilt bracket 720 is rotatably connected to the second mounting seat 710, the rotor 500 is fixed to the tilt bracket 720, and the third driving member drives the tilt bracket 720 to rotate relative to the second mounting seat 710, thereby fixing the rotor 500 at a specific angle to adjust the flight form of the drone. The fourth driving member 730 is fixed to the tilt bracket 720 and connected to the rotor 500. The fourth driving member 730 drives the rotor 500 to rotate to generate lift and enable the drone to take off. Among them, the third driving member and the fourth driving member 730 can both be driving devices such as motors, and their specific structures are not limited in the embodiments of this application.

[0086] In some possible implementations, see Figure 1 、 Figure 6 、 Figure 7 and Figure 8 As shown, the embodiment of the present application also includes an electronic speed regulator (not shown in the figure); a mounting groove 410 is provided on the third connecting rod 400, the electronic speed regulator is arranged in the mounting groove 410, and the electronic speed regulator is electrically connected to the fourth driving member 730; a cover plate 420 is provided on the mounting groove 410, and the cover plate 420 is rotatably connected to the third connecting rod 400.

[0087] In specific implementation, the flight of the UAV needs to adjust the lift generated by the rotor 500 by changing the rotation speed of the rotor 500, thereby achieving movement in different directions such as ascent and descent. Therefore, an electronic speed regulator needs to be set. The electronic speed regulator can adjust the speed of the motor according to the control signal. Therefore, when the fourth drive member 730 is a motor, the electronic speed regulator is electrically connected to the fourth drive member 730, and the speed of the rotor 500 can be adjusted through the fourth drive member 730, thereby changing the flight form of the UAV.

[0088] In addition, a cover plate 420 rotatably connected to the third connecting rod 400 is provided on the mounting groove 410. When the UAV is flying, the cover plate 420 covers the notch of the mounting groove 410, which can prevent external substances such as rainwater and dust from entering the mounting groove 410 and affecting the operation of the electronic speed controller. When the electronic speed controller is damaged or needs to be repaired, the electronic speed controller can be taken out by opening the cover plate 420, which is convenient and quick to operate.

[0089] In some possible implementations, see Figure 1 and Figures 6 to 10 As shown, the embodiment of the present application also includes a rotating shaft 430 and a locking member (not shown in the figure); the third connecting rod 400 has a mounting portion 440, and the mounting portion 440 is located on the side of the mounting groove 410; the rotating shaft 430 is rotatably connected to the mounting portion 440, and the cover plate 420 is fixed to the rotating shaft 430; the locking member is configured to lock or unlock the rotating shaft 430 and the mounting portion 440.

[0090] In some embodiments, the cover 420 is rotatably connected to the third connecting rod 400 via a rotating shaft 430, which is rotatably connected to the mounting portion 440. The cover 420 is fixedly connected to the rotating shaft 430 and rotates with the rotating shaft 430. Therefore, a locking member is provided on the side of the mounting portion 440, and the rotation of the cover 420 can be controlled by controlling the rotation of the rotating shaft 430. Locking the rotating shaft 430 with the locking member during flight prevents the cover 420 from automatically opening when the drone arm changes position, thereby better ensuring the normal operation of the electronic speed controller in the mounting slot 410.

[0091] In some possible implementations, see Figure 7 As shown, at least one heat dissipation hole 411 is defined on the side wall of the mounting slot 410 in the embodiment of the present application.

[0092] It will be appreciated that the at least one heat dissipation hole 411 provided on the sidewall of the mounting slot 410 can improve the heat dissipation efficiency of the electronic speed controller and prevent damage to the electronic speed controller caused by excessive temperatures within the mounting slot 410. Providing the heat dissipation hole 411 on the sidewall of the mounting slot 410 can aid in heat dissipation while preventing rainwater, etc., from falling into the mounting slot 410 from above.

[0093] An embodiment of the present application also provides a drone, comprising a fuselage and at least two of any of the above-mentioned arms arranged on the fuselage.

[0094] Among them, the structure and working principle of the arm are described in detail in the above embodiments and will not be repeated here.

[0095] In an embodiment of the present application, multiple connection ports are symmetrically arranged around the fuselage, and the arms are detachably connected to the fuselage through the connection ports. The power layout and weight of the drone can be adjusted by increasing or decreasing the number of installed arms as needed. The specific number of arms is not limited in this embodiment of the present application, as long as it can enable the drone to fly stably.

[0096] In summary, the embodiments of the present application provide an arm and a drone, which includes a drive assembly 100, a first connecting rod 200, a second connecting rod 300, a third connecting rod 400 and a rotor 500. The first connecting portion 310 of the second connecting rod 300 rotates relative to the second connecting portion 320, and the rotor 500 rotates relative to the third connecting rod 400, adjusting the rotor 500 to a fixed angle. When the rotor 500 remains horizontal, the drone moves in the vertical direction. When the rotor 500 is tilted, the drone moves in the horizontal direction. The drive assembly 100 drives the first connecting rod 200 to rotate relative to the fuselage, and can change the inclination direction of the rotor 500 while keeping the inclination angle of the rotor 500 unchanged, thereby changing the movement direction of the drone when it moves in the horizontal direction, and realizing the transformation of flight forms such as turns. In this way, by installing the arm on the fuselage, different flight forms of the drone, such as forward, ascending, and turning, can be achieved by adjusting the shape of the arm. The fuselage always remains horizontal during the flight. On the one hand, the projection area of the fuselage in the direction of movement when the drone moves horizontally is reduced, the air resistance is reduced, and the endurance of the drone is improved. On the other hand, it is also beneficial for the auxiliary inspection device installed on the fuselage to maintain stability and ensure the detection quality of the auxiliary inspection device.

[0097] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0098] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0099] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the embodiments of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0100] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0101] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0102] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0103] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0104] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A machine arm for a drone, characterized in that: It comprises a drive assembly (100), a first connecting rod (200), a second connecting rod (300), a third connecting rod (400) and a rotor (500); The driving assembly (100) is used to be connected to the fuselage of the UAV, and the first connecting rod (200) is used to be rotatably connected to the fuselage; The driving assembly (100) is configured to drive the first connecting rod (200) to rotate relative to the fuselage; The second connecting rod (300) includes a first connecting portion (310) and a second connecting portion (320), one end of the first connecting portion (310) is connected to the third connecting rod (400), one end of the second connecting portion (320) is connected to the first connecting rod (200), and the other end of the first connecting portion (310) is rotatably connected to the other end of the second connecting portion (320); The rotor (500) is rotatably connected to the third connecting rod (400) to adjust the angle of the rotor (500).

2. The machine arm according to claim 1, characterized in that: The driving assembly (100) includes a first mounting seat (110), a first driving member and a gear (120); One end of the first connecting rod (200) has saw teeth (221); The first mounting seat (110) is used to be connected to the fuselage, the first driving member is connected to the first mounting seat (110), the gear (120) is rotatably connected to the first mounting seat (110), and the gear (120) is meshed with the saw teeth (221); The first driving member is configured to drive the gear (120) to rotate relative to the first mounting seat (110), so that the gear (120) drives the first connecting rod (200) to rotate.

3. The machine arm according to claim 2, characterized in that: The first connecting rod (200) comprises a third connecting portion (210) and a fourth connecting portion (220), wherein the third connecting portion (210) is connected to the fourth connecting portion (220); The third connecting portion (210) is connected to the second connecting portion (320), and the saw teeth (221) are provided on the fourth connecting portion (220); The fourth connecting portion (220) is provided with a connecting hole (222), and the connecting hole (222) is used for rotational connection with the fuselage.

4. The machine arm according to claim 3, characterized in that: Also included is at least one connection assembly (600); The connecting assembly (600) includes a first connecting member (610) and a second connecting member (620), wherein the first connecting member (610) is arranged on one of the second connecting portion (320) and the third connecting portion (210), and the second connecting member (620) is arranged on the other of the second connecting portion (320) and the third connecting portion (210); The first connecting member (610) is connected to the second connecting member (620).

5. The machine arm according to any one of claims 1 to 4, characterized in that: Also included is a telescoping assembly (330); The telescopic assembly (330) includes a telescopic rod (331) and a second driving member (332); A sliding groove (340) is provided on the second connecting rod (300) along the length direction of the second connecting rod (300), the telescopic rod (331) is slidably connected to the sliding groove (340), and the second driving member (332) is provided on the second connecting rod (300); The second driving member (332) is configured to drive the telescopic rod (331) to extend or retract into the sliding groove (340) to adjust the length of the second connecting rod (300).

6. The machine arm according to any one of claims 1 to 4, characterized in that: Also included is a tilt assembly (700); The tilting assembly (700) comprises a second mounting seat (710), a tilting bracket (720), a third driving member, and a fourth driving member (730); The second mounting seat (710) is connected to an end of the third connecting rod (400) away from the second connecting rod (300), and the third driving member is arranged on the second mounting seat (710); The tilt bracket (720) is rotatably connected to the second mounting seat (710), the rotor (500) and the fourth driving member (730) are both arranged on the tilt bracket (720), and the fourth driving member (730) drives the rotor (500) to rotate; The third driving member is configured to drive the tilt bracket (720) to rotate relative to the second mounting seat (710) to adjust the angle of the rotor (500).

7. The machine arm according to claim 6, characterized in that: Also included is an electronic speed controller; The third connecting rod (400) is provided with a mounting groove (410), the electronic speed regulator is arranged in the mounting groove (410), and the electronic speed regulator is electrically connected to the fourth driving member (730); The installation groove (410) is provided with a cover plate (420), and the cover plate (420) is rotatably connected to the third connecting rod (400).

8. The machine arm according to claim 7, characterized in that: Also includes a rotating shaft (430) and a locking member; The third connecting rod (400) has a mounting portion (440), and the mounting portion (440) is located on the side of the mounting groove (410); The rotating shaft (430) is rotatably connected to the mounting portion (440), and the cover plate (420) is fixedly connected to the rotating shaft (430); The locking member is configured to lock or unlock the rotating shaft (430) and the mounting portion (440).

9. The machine arm according to claim 7, characterized in that: At least one heat dissipation hole (411) is provided on the side wall of the installation groove (410).

10. A drone, characterized in that: The invention comprises a fuselage and at least two arms according to any one of claims 1 to 9 arranged on the fuselage.

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