Rack of unmanned aerial vehicle

Abstract

An unmanned aerial vehicle frame can be assembled by combining a small number of aluminum alloy connecting pieces and carbon tubes (carbon fiber tubes), the weight of a vehicle body can be reduced, the use of aluminum materials is reduced, the light weight and strength of the carbon fiber vehicle body frame are achieved, the manufacturing process of the aluminum alloy connecting pieces and the carbon tubes is simple, and the manufacturing cost is low. According to the unmanned aerial vehicle, the complex technology of a carbon fiber vehicle body frame is not needed, the frame is easy to assemble and manufacture, different types of unmanned aerial vehicle frames such as a four-axis unmanned aerial vehicle frame, a six-axis unmanned aerial vehicle frame, an eight-axis unmanned aerial vehicle three-dimensional frame and a twelve-axis unmanned aerial vehicle three-dimensional frame can be formed, different use requirements can be better met, the loading load and the endurance time can be both improved, and the unmanned aerial vehicle can be widely used. The unmanned aerial vehicle is simple in manufacturing process, easy to manufacture, light in weight and high in load-carrying capacity, the vehicle body is not prone to deformation during load-carrying flight, the vehicle arms in the frame can be folded, transportation and use are flexible, and the market requirement of the unmanned aerial vehicle can be better met.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle manufacturing, in particular to a frame of an unmanned aerial vehicle. Background Art

[0002] Drones are common aircraft in our daily life. Load capacity and endurance are important performance indicators. To ensure load capacity and endurance, manufacturers need to use lightweight frames to reduce the weight of the fuselage and increase the payload. Currently, the commonly used lightweight drone frames (frames) are mainly aluminum alloy frames or integral carbon fiber frames. The aluminum alloy frame is usually a whole piece of aluminum alloy plate or a cast aluminum alloy frame blank, which is milled into the shape of the drone body by a CNC machine tool, and then the carbon fiber tube rotor arm and support feet are installed in the body to form the drone. The overall frame, the manufacturing process of the aluminum alloy frame takes a long time, produces a lot of waste, and is costly. In addition, the weight of the aluminum alloy frame is still heavy, which is a disadvantage. The overall carbon fiber frame manufacturing process is very complicated, and it needs to use a mold with the same shape as the body frame to assist in manufacturing. The weight is lighter than that of the aluminum alloy, but the cost of carbon fiber is high when the body frame is formed, and it is difficult to use it in the manufacture of larger drone frames, resulting in high body costs. Different sizes of models require different molds to be manufactured, which also has disadvantages, thus limiting its widespread use and only using it in high-end drones. Therefore, a drone frame with a simple manufacturing process, easy manufacturing, light weight, strong load-bearing capacity, and easy-to-use body that is not easily deformed when flying with a heavy load can better meet the market demand for drones. Summary of the invention

[0003] In order to solve the shortcomings of the above-mentioned existing UAV frames, the utility model provides a frame of a UAV, which can be assembled into a UAV frame by combining a small number of aluminum alloy connectors and carbon tubes (carbon fiber tubes, standardized profiles), which can reduce the weight of the fuselage, reduce the use of aluminum materials, and have the lightness and strength of the carbon fiber body frame. The manufacturing process of the aluminum alloy connectors and the carbon tubes is simple, and there is no need to use the complex process of the carbon fiber body frame. The frame assembly and manufacturing is also easy, and different models such as a four-axis UAV frame, a six-axis UAV frame, an eight-axis UAV three-dimensional frame, and a twelve-axis UAV three-dimensional frame can be formed, which can better meet different usage requirements and improve the load and endurance time. The manufacturing process is simple, easy to manufacture, light in weight, and strong in load-bearing capacity. The body is not easy to deform when flying with a heavy load. The arms in the frame can be folded, and the transportation and use are flexible, which can better meet the market demand for UAVs.

[0004] The utility model adopts the following technical scheme: a frame of an unmanned aerial vehicle, including a three-joint planar bracket and a longitudinal carbon tube, a transverse carbon tube, and a rotor arm to form a frame, characterized in that: the three-joint planar bracket is provided with a longitudinal interface, a transverse interface, and an arm interface, the longitudinal interface and the transverse interface of the three-joint planar bracket are respectively connected to adjacent longitudinal carbon tubes and transverse carbon tubes to form a plane frame of the unmanned aerial vehicle, the arm interface of the three-joint planar bracket is connected to the rotor arm, the end of the rotor arm is provided with a motor and a rotor, the rotation of the motor controls the rotation of the rotor, the longitudinal interface, the transverse interface, and the arm interface of the three-joint planar bracket are in the same plane, the corner position of the frame is connected by the three-joint planar bracket, one three-joint planar bracket can connect the longitudinal carbon tube, the transverse carbon tube and the rotor arm at the intersection of the same plane, the combination of four three-joint planar brackets and the carbon tube constitutes a frame of a stable structure, and a supporting foot is provided below the frame. Compared with aluminum alloy frames and carbon fiber fuselage frames, the three-joint planar bracket is simple to manufacture, has strong force stability, and reduces the use of aluminum. One three-joint planar bracket can connect two intersecting carbon tubes (i.e. carbon fiber tubes) and an arm (i.e. rotor arm). The combination of four three-joint planar brackets and carbon tubes can form an overall UAV frame. The frame is simple to manufacture, low in cost, and easy to install. It only requires simple assembly, and then the carbon tube is fixed and connected by tightening the interface of the three-joint planar bracket with screws. Only a small amount of aluminum alloy combined with the carbon tube can form a stable structural frame with a light weight.

[0005] The three-joint planar bracket includes a tube clamp body and an arm interface component. The tube clamp body is provided with a longitudinal interface 31 and a transverse interface 32. A clamping surface 34 is provided at the upper and lower ends of the transverse interface 32. The arm interface component is provided with an arm interface 33 and a clamping opening 35. The clamping opening 35 can clamp the clamping surface 34 of the tube clamp body. According to the actual size requirements of the frame, the size of the angle between the tube clamp body and the arm interface component is set, and then the tube clamp body and the arm interface component are connected and fixed by screws to form an integral three-joint planar bracket.

[0006] After the upper plate clamps are installed in the longitudinal carbon tubes and transverse carbon tubes of the frame, a flat plate can be installed on the upper end of the plate clamps. The flat plate can be a carbon fiber plate or a plate made of other materials. Then, circuit modules, batteries, generator modules, electronic control system modules and other equipment can be fixed on the upper or lower end surface of the flat plate.

[0007] The rotor arm can be a foldable rotor arm. A folding piece is provided in the carbon tube of the rotor arm connected to the three-joint planar bracket. When the folding piece is opened, the rotor arm can be folded based on the folding piece. When not in use, the size can be reduced, which is convenient for packaging and transportation. When in use, the rotor arm is unfolded, the folding piece is locked, and the rotor arm is fixed in the unfolded state. The overall frame is easy to use.

[0008] The folding part of the rotor arm is any one of an aluminum alloy transverse folding part arm or a self-locking anti-empty position folding arm.

[0009] The frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame, and a plurality of vertical tube frames connect the two plane frames to form a stable three-dimensional frame. The two ends of the vertical tube frame are respectively provided with pipe clamps, and the pipe clamps at the upper end of the vertical tube frame connect the longitudinal carbon tubes of the upper plane frame, and the pipe clamps at the lower end of the vertical tube frame connect the longitudinal carbon tubes of the lower plane frame to form a three-dimensional frame. The three-dimensional frame of the drone can be formed by connecting the two plane frames with the vertical tube frame, so that the two plane frames can be simply assembled into a three-dimensional frame structure. Circuit modules, batteries, generator modules, electronic control systems and other equipment can be hung or placed in each layer of the plane frame, so that the drone has a modular design and can be assembled into a single-layer plane frame or a three-dimensional frame composed of multiple layers of plane frames according to the use requirements, which can better meet the market demand for drones.

[0010] The rotor arm includes a double rotor arm consisting of an upper rotor arm and a lower rotor arm. The upper rotor arm and the lower rotor arm are connected as a whole through a plurality of vertical tube frames to form a double rotor arm. The rotor arm at the upper end can be connected as a whole with the arm interface of the three-joint plane bracket at the four corners of the upper plane frame, and the rotor arm at the lower end can be connected as a whole with the arm interface of the three-joint plane bracket of the lower plane frame to form a double rotor arm. An independent motor and rotor are installed at the end of each rotor arm, which can increase the power of the load during use, and the double rotor arm structure can improve the rigidity of the rotor arm, and the rotor arm has better bending resistance during load flight. The combination of the double rotor arm and the three-dimensional frame can also improve the strength and stability of the three-dimensional frame, enhance the body strength of the UAV, reduce the use of aluminum alloy materials, reduce the weight of the frame, and avoid the complexity of the carbon fiber process.

[0011] The rotor arm is a foldable double rotor arm, and a folding piece is arranged in the carbon tube at the same position of each rotor arm of the double rotor arm. When the folding pieces of the double rotor arm are all opened, the double rotor arm can be folded based on the folding piece. When in use, the double rotor arm is unfolded, the folding piece is locked, and the double rotor arm is fixed in an unfolded state. By arranging the folding piece in the double rotor arm, and having a vertical tube frame connecting the upper rotor arm 7 and the lower rotor arm 7, the double rotor arm is connected as a whole, which is convenient when unfolding or folding, and has better stability, and the double rotor arm has strong anti-bending performance.

[0012] The frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame, a plurality of vertical tube frames connect the two plane frames so that the two plane frames form a stable three-dimensional frame, and tube clamps are respectively arranged at both ends of the vertical tube frame, the tube clamps at the upper ends of the vertical tube frames are connected to the longitudinal carbon tubes of the upper plane frame, and the tube clamps at the lower ends of the vertical tube frames are connected to the longitudinal carbon tubes of the lower plane frame to form a three-dimensional frame, and double rotor arms are installed in the arm interfaces of the three-joint plane brackets at the four corners of the three-dimensional frame, and the tube clamps are installed in the middle parts of the upper and lower horizontal carbon tubes of the three-joint plane brackets to form the same plane, and then the double rotor arms are installed in the tube clamps to form a twelve-axis UAV three-dimensional frame.

[0013] The rotor arm includes a double rotor arm consisting of an upper rotor arm and a lower rotor arm, the upper rotor arm and the lower rotor arm are connected as a whole through a plurality of vertical tube frames, the rotor arm at the upper end is connected as a whole with the arm interface of the three-joint plane bracket of the upper plane frame, the rotor arm at the lower end is connected as a whole with the arm interface of the three-joint plane bracket of the lower plane frame, the tube clamps of the transverse carbon tubes at the upper and lower ends are connected as a whole with the double rotor arms to form a three-dimensional frame of the twelve-axis UAV, an independent motor and rotor are arranged at the end of each rotor arm, and a supporting stand tripod is installed to form the frame of the twelve-axis UAV. It is possible to simply set six double rotor arms in a three-dimensional frame, so that the UAV three-dimensional frame has twelve rotors, which can increase the load during use, and the twelve-axis structure of the double rotor arms can improve the rigidity of the rotor arms and the structural strength of the three-dimensional frame. During load-bearing flight, the rotor arms have better bending resistance and the structural stability of the fuselage is also strong. It is possible to assemble a large multi-rotor unmanned frame with a large load capacity by modifying the length of the carbon tube and cooperating with the three-jointed plane bracket. The frame is light in weight and has a simple manufacturing process.

[0014] The rotor arm is a foldable double rotor arm, and a folding piece is arranged in the carbon tube at the same position of each rotor arm of the double rotor arm. When the folding pieces of the double rotor arm are all opened, the double rotor arm can be folded based on the folding piece. When in use, the double rotor arm is unfolded, the folding piece is locked, and the double rotor arm is fixed in the unfolded state. By arranging the folding piece in the double rotor arm and having a vertical pipe frame connecting the upper rotor arm and the lower rotor arm, the double rotor arm is connected as a whole, which is convenient when unfolding or folding, and has better stability.

[0015] The beneficial effects of the utility model are that compared with the prior art, the advantages are: 1. The three-joint plane bracket and the carbon tube (carbon fiber tube) can be combined to form the frame of the drone, which reduces the weight of the fuselage, reduces the use of aluminum, and has the lightness and strength of the carbon fiber body frame. The manufacturing process of the three-joint plane bracket and the carbon tube is simple, and the frame assembly and manufacturing is also easy. It can also form different models such as the four-axis drone frame, the six-axis drone frame, the eight-axis drone stereo frame, and the twelve-axis drone stereo frame, which can better meet different usage requirements and improve the load and endurance time. 2. Compared with the aluminum alloy frame, a three-joint plane bracket can connect two carbon tubes (i.e., carbon fiber tubes) at the intersection and an arm, and the combination of four three-joint plane brackets and carbon tubes can form an overall drone frame, which is easy to assemble. It is only a simple assembly, and then tightened and fixed by screws to form a stable structure frame, and the stability is high, the use of aluminum is reduced, and the weight is light; compared with the overall carbon fiber frame, the manufacturing process is simple, and there is no need to use complex auxiliary molds. Only the purchased existing carbon tubes can be assembled into a frame. 3. Two plane frames connected with four vertical tube frames can form a UAV three-dimensional frame, which can be formed by connecting several plane frames with vertical tube frames to form a UAV three-dimensional frame with a multi-layer plane frame structure. The modular design of the UAV structure can be assembled into a single-layer plane frame or a three-dimensional frame composed of multiple layers of plane frames according to the use requirements. 4. By arranging a double rotor arm in the three-dimensional frame, the rigidity of the rotor arm can be improved, and the bending resistance of the rotor arm is better during load-bearing flight. The combination of the double rotor arm and the three-dimensional frame improves the strength and stability of the three-dimensional frame and enhances the body strength of the UAV. 5. The arm interface component with adjustable angle and then fixed is matched with the pipe clamp body to form a three-joint plane bracket, which is suitable for different models and is more convenient to use. Only one three-joint plane bracket needs to be manufactured to be able to adjust the angle to suit different models, achieving the advantage of shared accessories. The three-joint plane bracket is simple to manufacture, and the arm interface component and the rotor arm can also be removed when the screws are removed, so that the rotor arm can be separated, which can reduce the packaging size and facilitate transportation, so that the UAV body can be modularly designed and assembled. 6. The manufacturing process is simple, easy to manufacture, light in weight, and strong in load-bearing capacity. The body is not easy to deform when flying with a heavy load. The arms of the machine in the frame can be folded, and transportation and use are flexible, which can better meet the market demand for UAVs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a first embodiment, a view of a plane frame of a quadcopter drone;

[0017] Figure 2 is an exploded view of a plane frame of a quadcopter drone in a first embodiment;

[0018] Figure 3 This is a view of the first embodiment, showing the plane frame and rotor arms of the quadcopter drone unfolded;

[0019] Figure 4 This is a view of the first embodiment, a plane frame of the quadcopter drone and a folded rotor arm;

[0020] Figure 5 is a second embodiment, a view of the three-dimensional frame and upper and lower rotor arms of the eight-axis UAV;

[0021] Figure 6 This is a second embodiment, a view of the three-dimensional frame of the eight-axis UAV and the folded upper and lower rotor arms;

[0022] Figure 7 is a third embodiment, a view of a three-dimensional frame and upper and lower rotor arms of a twelve-axis UAV;

[0023] Figure 8 is a third embodiment, a view of the three-dimensional frame of the twelve-axis UAV and the folded upper and lower rotor arms;

[0024] Fig. 9 is a fourth embodiment, a three-joint plane bracket stereogram of a UAV stereo frame;

[0025] Fig.10 is a fourth embodiment, an exploded view of a three-jointed planar bracket of a stereoscopic frame of a drone;

[0026] Fig.11 is a fifth embodiment, a three-jointed plane bracket stereogram of a UAV stereo frame;

[0027] Fig.12 is a fifth embodiment, an exploded view of a three-jointed plane bracket of a stereoscopic frame of a drone;

[0028] In the figure: 1. longitudinal carbon tube, 2. transverse carbon tube, 3. three-joint plane bracket, 4. pipe clamp, 5. supporting carbon tube, 6. standing carbon tube, 7. rotor arm, 8. motor, 9. rotor, 10. plate clamp, 11. folding part, 12. vertical tube rack, 31. longitudinal interface, 32. transverse interface, 33. arm interface, 34. clamping surface, 35. clamping mouth, 36. axis screw, 37. adjustment arc hole, 38. locking screw. DETAILED DESCRIPTION

[0029] exist Figure 1-4The first embodiment of the present application is shown, a frame of an unmanned aerial vehicle, including a longitudinal carbon tube 1, a transverse carbon tube 2, a three-joint planar bracket 3, a tube clamp 4, and a rotor arm 7. The three-joint planar bracket 3 is provided with a longitudinal interface 21, a transverse interface 22, and an arm interface 23. The longitudinal interface 31 and the transverse interface 32 of the three-joint planar bracket 3 are respectively connected to adjacent longitudinal carbon tubes 1 and transverse carbon tubes 2 to form a plane frame of the unmanned aerial vehicle. The arm interface 33 of the three-joint planar bracket 3 is connected to the rotor arm 7. A motor 8 is provided at the end of the rotor arm 7. The rotating shaft of the motor 8 is connected to the propeller clamp, and a rotor 9 is installed in the propeller clamp. The rotation of the motor 8 controls the rotation of the rotor 9 to generate lift.

[0030] The longitudinal interface 31, the transverse interface 32, and the arm interface 33 of the three-joint plane bracket 3 are in the same plane. The three-joint plane bracket 3 is connected to the corner of the frame. The longitudinal carbon tube 1, the transverse carbon tube 2, and the rotor arm 7 at the intersection of the same plane can be connected through a plane frame (i.e., a three-joint plane bracket 3) to form a frame. Compared with the aluminum alloy frame, the three-joint plane bracket 3 is simple to manufacture, has strong force stability, and reduces the use of aluminum. One three-joint plane bracket 3 can connect two carbon tubes (i.e., carbon fiber tubes) at the intersection and an arm (i.e., rotor arm). The combination of four three-joint plane brackets 3 and carbon tubes can form an integral drone frame. The frame is simple to manufacture, low in cost, and easy to install. It is only a simple assembly, and then the interface of the three-joint plane bracket 3 is tightened by screws to fix the carbon tube. Only a small amount of aluminum alloy combined with the carbon tube can form a stable structure frame with a light weight. For example: when used in the frame of a four-axis drone, it is only necessary to combine four three-joint plane brackets 3 with four carbon tubes, and then connect and fix the three-joint plane brackets 3 with the carbon tubes by screws to assemble the frame, and install the upper machine arms in the machine arm interfaces 33 of the three-joint plane brackets 3 at the four corners of the frame to form an overall drone plane frame, and install the supporting stand tripod in the frame to form the frame of the four-axis drone. For example: when used in a six-axis drone, only the upper machine arms are installed in the four corners of the frame, and then the symmetrical machine arms are installed in the front and rear frame carbon tubes or the left and right frame carbon tubes to form the frame of the six-axis drone.

[0031] The frame is provided with supporting feet at the bottom, and the longitudinal carbon tubes 1 on both sides of the frame are provided with tube clamps 4 connected to the supporting carbon tubes 5, and the supporting carbon tubes 5 are connected to the standing foot carbon tubes 6 through the tube clamps 4, forming the overall supporting feet of the frame. After the upper plate clamps 10 are installed in the longitudinal carbon tubes 1 and the transverse carbon tubes 2 of the frame, the upper flat plate can be installed on the upper end of the plate clamps 10, and the flat plate can be a carbon fiber plate or a plate of other materials, and then the circuit module, battery, generator module, electric control system and other equipment can be fixed on the upper end surface or lower end surface of the flat plate.

[0032] There is no restriction. The rotor arm 7 can be a foldable rotor arm. A folding piece 11 is provided in the carbon tube of the rotor arm 7 connected to the three-joint planar bracket 3. When the folding piece 11 is opened, the rotor arm 7 can be folded based on the folding piece 11. When not in use, the size can be reduced, which is convenient for packaging and transportation. When in use, the rotor arm 7 can be unfolded, the folding piece 11 is locked, and the rotor arm 7 is fixed in the unfolded state. The overall frame is easy to use.

[0033] The folding member 11 of the rotor arm 7 is any one of an aluminum alloy transverse folding member arm or a self-locking anti-empty position folding arm.

[0034] exist Figure 5-6 In the three-dimensional frame of the eight-axis UAV of the second embodiment shown, the UAV frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame. The two plane frames are connected by a plurality of vertical pipe frames 12 to form a stable three-dimensional frame.

[0035] The two ends of the vertical tube frame 12 are respectively provided with pipe clamps 4, and the pipe clamps 4 at the upper end of the vertical tube frame 12 are connected to the longitudinal carbon tubes 1 of the upper plane frame, and the pipe clamps 4 at the lower end of the vertical tube frame 12 are connected to the longitudinal carbon tubes 1 of the lower plane frame to form a three-dimensional frame. The three-dimensional frame of the drone can be formed by connecting the two plane frames with the vertical tube frame 12, and the three-dimensional frame structure can be simply assembled by two plane frames. When the upper plate clamp 10 and the flat panel are installed in the longitudinal carbon tube 1 and the transverse carbon tube 2 of the three-dimensional frame, the circuit module, battery, generator module, electric control system and other equipment can be installed in the three-dimensional frame. The three-dimensional frame has a double-layer structure and a simple manufacturing process. It only consists of three-jointed plane brackets 3, pipe clamps 4, and carbon tubes. After being assembled and fixed, the three-dimensional frame of the drone is formed, which is easy in the production and manufacturing process. It is realized that a UAV having a multi-layer plane frame structure can be formed by connecting a plurality of plane frames with a vertical pipe frame 12, and circuit modules, batteries, generator modules, electronic control systems and other equipment can be hung or placed in each layer of the plane frame, so that the UAV has a modular design and can be assembled into a single-layer plane frame or a three-dimensional frame composed of multiple layers of plane frames according to usage requirements, which can better meet the market demand for UAVs.

[0036] The rotor arm 7 includes a double rotor arm consisting of an upper rotor arm 7 and a lower rotor arm 7. The upper rotor arm 7 and the lower rotor arm 7 are connected as a whole through a plurality of vertical tube frames 12 to form a double rotor arm. The rotor arm 7 at the upper end can be connected as a whole with the arm interface 23 of the three-jointed plane bracket 3 at the four corners of the upper plane frame. The rotor arm 7 at the lower end can be connected as a whole with the arm interface 23 of the three-jointed plane bracket 3 of the lower plane frame to form a double rotor arm. An independent motor 8 and rotor 9 are installed at the end of each rotor arm 7, which can increase the power of the load during use. The double rotor arm structure can improve the rigidity of the rotor arm, and the bending resistance of the rotor arm is better during load-bearing flight. The combination of the double rotor arm and the three-dimensional frame can also improve the strength and stability of the three-dimensional frame, enhance the body strength of the UAV, reduce the use of aluminum alloy materials, reduce the weight of the frame, and avoid the complexity of the carbon fiber process.

[0037] The rotor arm 7 is a foldable double rotor arm, and a folding piece 11 is provided in the carbon tube at the same position of each rotor arm 7 of the double rotor arm. When the folding pieces 11 of the double rotor arm are all opened, the double rotor arm can be folded based on the folding piece 11. When in use, the double rotor arm is unfolded, the folding piece 11 is locked, and the double rotor arm is fixed in the unfolded state. By arranging the folding piece 11 in the double rotor arm, and having a vertical tube frame 12 connecting the upper rotor arm 7 and the lower rotor arm 7, the double rotor arm is connected as a whole, which is convenient when unfolding or folding, and has better stability, and the double rotor arm has strong anti-bending performance.

[0038] exist Figure 7-8 In the three-dimensional frame of the twelve-axis UAV of the third embodiment shown, the UAV frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame, and a plurality of vertical tube frames 12 connect the two plane frames so that the two plane frames constitute a stable three-dimensional frame. Pipe clamps 4 are respectively arranged at both ends of the vertical tube frame 12. The pipe clamps 4 at the upper ends of the vertical tube frames 12 are connected to the longitudinal carbon tubes 1 of the upper plane frame, and the pipe clamps 4 at the lower ends of the vertical tube frames 12 are connected to the longitudinal carbon tubes 1 of the lower plane frame to form a three-dimensional frame. A double rotor arm is installed in the arm interface 23 of the three-joint plane bracket 3 at the four corners of the three-dimensional frame, and a pipe clamp 4 is installed in the middle part of the upper and lower transverse carbon tubes 2 of the three-joint plane bracket 3 to form the same plane, and then a double rotor arm is installed in the pipe clamp 4 to form a twelve-axis UAV three-dimensional frame.

[0039] The rotor arm 7 includes a double rotor arm consisting of an upper rotor arm and a lower rotor arm 7, the upper rotor arm 7 and the lower rotor arm 7 are connected as a whole through a plurality of vertical tube frames 12, the rotor arm 7 at the upper end is connected as a whole with the arm interface 23 of the three-joint plane bracket 3 of the upper plane frame, the rotor arm 7 at the lower end is connected as a whole with the arm interface 23 of the three-joint plane bracket 3 of the lower plane frame, the tube clamps 4 of the upper and lower transverse carbon tubes 2 are connected as a whole with the double rotor arms to form a three-dimensional frame of a twelve-axis UAV, an independent motor 8 and a rotor 9 are provided at the end of each rotor arm 7, and a supporting stand is installed to form the frame of a twelve-axis UAV. It is possible to simply set six double rotor arms in the three-dimensional frame, and the three-dimensional frame of the UAV has twelve rotors 9. The load can be increased during use, and the twelve-axis structure of the double rotor arms can improve the rigidity of the rotor arms and the structural strength of the three-dimensional frame. During load-bearing flight, the rotor arms have better bending resistance and the structural stability of the body is also strong. It is possible to assemble a large multi-rotor unmanned frame with a large load capacity by modifying the length of the carbon tube and cooperating with the three-jointed plane bracket 3. The frame is light in weight and has a simple manufacturing process.

[0040] The rotor arm 7 is a foldable double rotor arm, and a folding piece 11 is provided in the carbon tube at the same position of each rotor arm 7 of the double rotor arm. When the folding pieces 11 of the double rotor arm are all opened, the double rotor arm can be folded based on the folding piece 11. When in use, the double rotor arm is unfolded, the folding piece 11 is locked, and the double rotor arm is fixed in the unfolded state. By arranging the folding piece 11 in the double rotor arm and having a vertical tube frame 12 connecting the upper rotor arm 7 and the lower rotor arm 7, the double rotor arm is connected as a whole, which is convenient when unfolding or folding, and has better stability.

[0041] exist Figure 9-10In the embodiment, the three-joint planar bracket of the UAV stereoscopic frame includes a tube clamp body and an arm interface component, the tube clamp body is provided with a longitudinal interface 31 and a transverse interface 32, a clamping surface 34 is provided at the upper and lower ends of the transverse interface 32, the arm interface component is provided with an arm interface 33 and a clamping opening 35, the clamping opening 35 can clamp the clamping surface 34 of the tube clamp body, and when the axial screw 36 and the surrounding connecting screws are tightened, the tube clamp body and the arm interface component can be connected and fixed as a whole, forming an integral three-joint planar bracket, which makes the manufacture of the three-joint planar bracket simpler, and the arm interface component and the rotor arm can be removed by simply removing the screws, so that the rotor arm can be separated, the packaging size can be reduced to a smaller size and transportation is also convenient, so that the UAV body can be modularly designed and assembled. The degree of the angle between the tube clamp body and the arm interface component can be set according to the actual size requirements of the frame, and then the connecting screw holes are set. When the screws are tightened, the angle can be used as a fixed angle to connect and fix the tube clamp body and the arm interface component as a whole, thereby obtaining a three-joint plane bracket with a required angle.

[0042] exist Figure 11-12In an embodiment, the three-jointed planar bracket of the stereoscopic frame of the unmanned aerial vehicle includes a tube clamp body and an arm interface component, wherein the tube clamp body is provided with a longitudinal interface 31 and a transverse interface 32, an axial screw hole is provided at the intersection of the central axes of the circular holes of the longitudinal interface 31 and the transverse interface 32, and a clamping surface 34 is provided at the upper and lower ends of the transverse interface 32, and the arm interface component is provided with an arm interface 33 and a clamping opening 35, and the clamping opening 35 can clamp the clamping surface 34 of the tube clamp body, and screw hole positions matching the axial screw hole are respectively provided on the upper and lower end surfaces of the clamping opening 35, and a screw hole is provided to fix the clamping surface 34 of the tube clamp body. The thread hole position is an adjusting arc hole 37 with the center of the circle, and the locking screw 38 passes through the adjusting arc hole 37 to be connected with the tube clamp body. When the axial screw 36 and the locking screw 38 are tightened, the tube clamp body and the arm interface component can be connected and fixed as a whole, forming an integral three-joint plane bracket. When the axial screw 36 and the locking screw 38 are loosened (only loosened slightly, no need to completely disassemble), the arm interface component can be rotated with the axial screw 36 as the axis to adjust the angle. When the required angle is adjusted, the axial screw 36 and the locking screw 38 are tightened again to connect and fix the tube clamp body and the arm interface component as a whole. An angle-adjustable and fixed arm interface component is provided to cooperate with the tube clamp body. During use, due to the different fuselage lengths of different types of racks, only the tightening axis screw 36 and the locking screw 38 need to be loosened to adjust the angle between the tube clamp body and the arm interface component. This is suitable for different models and is more convenient to use. Only one three-joint plane bracket needs to be manufactured to be suitable for different models by adjusting the angle, thereby achieving the advantage of shared accessories. The three-joint plane bracket is simple to manufacture, and the arm interface component and the rotor arm can also be removed when the screws are removed, so that the rotor arm can be separated, the packaging size can be reduced to a smaller size, and transportation is also convenient, thereby realizing modular design and assembly of the drone body.

Claims

1. A frame of an unmanned aerial vehicle, comprising a three-jointed plane bracket, a longitudinal carbon tube, a transverse carbon tube, and a rotor arm to form a frame, characterized in that: The three-joint planar bracket is provided with a longitudinal interface, a transverse interface, and an arm interface. The longitudinal interface and the transverse interface of the three-joint planar bracket are respectively connected to adjacent longitudinal carbon tubes and transverse carbon tubes to form a plane frame of the UAV. The arm interface of the three-joint planar bracket is connected to the rotor arm. The end of the rotor arm is provided with a motor and a rotor. The rotation of the motor controls the rotation of the rotor. The longitudinal interface, the transverse interface, and the arm interface of the three-joint planar bracket are in the same plane. The corners of the frame are connected through the three-joint planar bracket. One three-joint planar bracket can connect the longitudinal carbon tubes, the transverse carbon tubes and the rotor arm at the intersection of the same plane. The combination of four three-joint planar brackets and carbon tubes constitutes a frame of a stable structure, and a supporting foot is provided below the frame.

2. The frame of the UAV according to claim 1, characterized in that: The three-joint planar bracket includes a tube clamp body and an arm interface component. The tube clamp body is provided with a longitudinal interface and a transverse interface. Clamping surfaces are provided at the upper and lower ends of the transverse interface. The arm interface component is provided with an arm interface and a clamping opening. The clamping opening can clamp the clamping surface of the tube clamp body. According to the actual size requirements of the frame, the size of the angle between the tube clamp body and the arm interface component is set, and then the tube clamp body and the arm interface component are connected and fixed by screws to form an integral three-joint planar bracket.

3. The frame of the UAV according to claim 1, characterized in that: After the upper plate clamps are installed in the longitudinal carbon tubes and transverse carbon tubes of the frame, the upper end of the plate clamps can be installed with a flat plate, and the circuit module, battery, generator module, and electric control system module are fixed on the upper end surface or lower end surface of the flat plate.

4. The frame of the UAV according to claim 1 or 2, characterized in that: The rotor arm is a foldable rotor arm. A folding piece is arranged in the carbon tube of the rotor arm connected to the three-joint plane bracket. When the folding piece is opened, the rotor arm can be folded. When in use, the rotor arm is unfolded and the folding piece is locked and fixed into the unfolded state.

5. The frame of a drone according to claim 1 or 2, characterized in that: The frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame. A plurality of vertical tube frames connect the two plane frames to form a stable three-dimensional frame. Pipe clamps are respectively arranged at both ends of the vertical tube frames. The pipe clamps at the upper ends of the vertical tube frames are connected to the longitudinal carbon tubes of the upper plane frame, and the pipe clamps at the lower ends of the vertical tube frames are connected to the longitudinal carbon tubes of the lower plane frame to form a three-dimensional frame of the UAV.

6. The frame of the UAV according to claim 5, characterized in that: The rotor arm includes a double rotor arm consisting of an upper rotor arm and a lower rotor arm. The upper rotor arm and the lower rotor arm are connected as a whole through a plurality of vertical tube frames to form a double rotor arm. The rotor arm at the upper end can be connected as a whole with the arm interface of the three-joint plane bracket at the four corners of the upper plane frame. The rotor arm at the lower end can be connected as a whole with the arm interface of the three-joint plane bracket of the lower plane frame to form a double rotor arm. The combination of the double rotor arm and the three-dimensional frame improves the strength and stability of the three-dimensional frame.

7. The frame of the UAV according to claim 6, characterized in that: The rotor arm is a foldable double rotor arm, and a folding piece is provided in the carbon tube at the same position of each rotor arm of the double rotor arm. When the folding pieces of the double rotor arms are opened, the double rotor arms can be folded based on the folding pieces. When in use, the double rotor arms are unfolded, the folding pieces are locked, and the double rotor arms are fixed in the unfolded state.

8. The frame of a drone according to claim 1 or 2, characterized in that: The frame includes a three-dimensional frame composed of an upper plane frame and a lower plane frame, a plurality of vertical tube frames connecting the two plane frames, and tube clamps are respectively arranged at both ends of the vertical tube frames, the tube clamps at the upper ends of the vertical tube frames are connected to the longitudinal carbon tubes of the upper plane frame, and the tube clamps at the lower ends of the vertical tube frames are connected to the longitudinal carbon tubes of the lower plane frame to form a three-dimensional frame, and double rotor arms are installed in the arm interfaces of the three-joint plane brackets at the four corners of the three-dimensional frame, and the tube clamps are installed in the middle parts of the upper and lower horizontal carbon tubes of the three-joint plane brackets to form the same plane, and then the double rotor arms are installed in the tube clamps to form a twelve-axis UAV three-dimensional frame.

9. The frame of the UAV according to claim 8, characterized in that: The rotor arm includes a double rotor arm consisting of an upper rotor arm and a lower rotor arm, the upper rotor arm and the lower rotor arm are connected as a whole through a plurality of vertical tube frames, the rotor arm at the upper end is connected as a whole with the arm interface of the three-joint plane bracket of the upper plane frame, the rotor arm at the lower end is connected as a whole with the arm interface of the three-joint plane bracket of the lower plane frame, the tube clamps of the transverse carbon tubes at the upper and lower ends are connected as a whole with the double rotor arms to form a three-dimensional frame of a twelve-axis UAV, and an independent motor and rotor are arranged at the end of each rotor arm.

10. The frame of the UAV according to claim 9, characterized in that: The rotor arm is a foldable double rotor arm, and a folding piece is provided in the carbon tube at the same position of each rotor arm of the double rotor arm. When the folding pieces of the double rotor arm are opened, the double rotor arm can be folded based on the folding piece. When in use, the double rotor arm is unfolded, the folding piece is locked, and the double rotor arm is fixed in the unfolded state.

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