Tandem dual-rotor unmanned aerial vehicle structure

Abstract

The invention relates to the field of unmanned aerial vehicles, in particular to a tandem dual-rotor unmanned aerial vehicle structure which comprises an unmanned aerial vehicle body, a mounting plate slidably connected to the unmanned aerial vehicle body, spiral wings rotatably connected to the two ends of the unmanned aerial vehicle body and a driving device used for driving each spiral wing to rotate. The two spiral wings are located at the front end and the rear end of the unmanned aerial vehicle body correspondingly, the mounting plate slides in the width direction of the unmanned aerial vehicle body, and a plurality of mounting holes used for mounting an operation platform are formed in the mounting plate. The application has the advantages that the application range of the unmanned aerial vehicle can be widened, and the flight stability of the unmanned aerial vehicle can be guaranteed when different operation platforms are installed on the unmanned aerial vehicle.

Description

Technical Field

[0001] The present application relates to the field of unmanned aerial vehicles, and in particular to a tandem twin-rotor unmanned aerial vehicle structure. Background Art

[0002] In recent years, with the rapid development of unmanned driving technology, drones have been used more and more widely in various industries. Especially in the fields of agricultural and forestry plant protection, cargo distribution, disaster monitoring, etc., drones have received great attention from the market because they can effectively reduce labor costs and improve work efficiency. However, the design of traditional drones is usually limited by load capacity and the diversity of operating platforms, and it is difficult to meet the changes in different operating needs. Especially when installing different operating platforms on drones, it is necessary to ensure that the center of gravity of the installed operating platform is consistent with the center of gravity of the drone itself, or it is necessary to ensure that the center of gravity of different operating platforms is consistent after installation, otherwise the center of gravity of the drone will change, resulting in unstable flight of the drone, which in turn affects the flight safety of the drone. Summary of the invention

[0003] In order to improve the application scope of the UAV and ensure the flight stability of the UAV when different work platforms are installed on the UAV, the present application provides a tandem twin-rotor UAV structure.

[0004] The present application provides a tandem twin-rotor UAV structure that adopts the following technical solution: A tandem twin-rotor UAV structure comprises a UAV body, a mounting plate slidably connected to the UAV body, spiral wings rotatably connected to both ends of the UAV body, and a driving device for driving each spiral wing to rotate, wherein the two spiral wings are respectively located at the front and rear ends of the UAV body, the mounting plate slides along the width direction of the UAV body, and a plurality of mounting holes for mounting a working platform are provided on the mounting plate.

[0005] By adopting the above technical solution, the tandem twin-rotor UAV structure can keep the center of gravity of the UAV stable when installed on different work platforms. Specifically, the mounting plate slidably connected to the UAV body can slide in the width direction, which makes it possible to balance the overall center of gravity of the UAV by adjusting the position of the mounting plate when installing work platforms of different weights and sizes. There are multiple mounting holes on the mounting plate, which facilitates the rapid replacement and installation of various types of work platforms, thereby improving the flexibility and adaptability of the UAV. The propellers are rotatably connected to both ends of the UAV body and driven to rotate by a drive device, ensuring the flight stability and power output of the UAV.

[0006] Optionally, the drone body includes a fixed plate, the two spiral wings are rotatably connected to the two ends of the fixed plate, the mounting plate is slidably connected to the fixed plate, a linear drive component is fixed to the fixed plate for driving the mounting plate to slide, and a mounting groove is provided on the fixed plate for the linear drive component to be embedded.

[0007] By adopting the above technical solution, the fixed plate serves as the main supporting structure of the drone body, and can stably install the propellers and various components. The two propellers are rotatably connected to the two ends of the fixed plate, ensuring the balance of the drone and the uniformity of power distribution. The mounting plate is slidably connected to the fixed plate and driven to slide by the linear drive component. The position of the working platform can be flexibly adjusted so that working platforms of different weights and sizes can be accurately installed in the optimal position, thereby maintaining the overall center of gravity of the drone stable. The mounting grooves on the fixed plate provide a stable installation base for the linear drive component, ensuring the smoothness and reliability of the sliding of the mounting plate.

[0008] Optionally, the drone body also includes a support plate located at the lower side of the fixed plate, a weighing sensor is fixedly connected between the fixed plate and the support plate, and the weighing sensor is located around the fixed plate; a connecting piece is arranged between the fixed plate and the support plate, and a plurality of the connecting pieces are arranged at intervals around the circumference of the fixed plate.

[0009] By adopting the above technical solution, the weighing sensor between the fixed plate and the support plate can detect the weight distribution of the working platform in real time, ensuring that the center of gravity of the UAV remains stable after being installed on different working platforms, avoiding flight instability caused by center of gravity shift.

[0010] Optionally, a first embedding groove is provided on the lower side of the fixed plate, a second embedding groove corresponding to the first embedding groove is provided on the support plate, and the connecting member includes a supporting cylinder fixedly connected to the bottom of the first embedding groove and the bottom of the second embedding groove, and a supporting spring sleeved on the supporting cylinder.

[0011] By adopting the above technical solution, the first embedding groove opened on the lower side of the fixing plate cooperates with the second embedding groove opened on the supporting plate, and the supporting cylinder and the supporting spring in the connecting part can support the fixing plate through the supporting spring when the center of gravity of the drone body needs to be adjusted, so that the weighing sensor can detect the weight data of different positions of the fixing plate. After adjusting the position of the mounting plate to adjust the center of gravity, the fixing plate can be supported by the supporting cylinder to ensure the overall supporting strength of the drone body.

[0012] Optionally, the drone body also includes a support frame installed on the lower side of the support plate and a support wheel installed on the support frame at one end away from the support plate; the support wheel includes a wheel rim and an abutment wheel rotatably connected to the wheel rim; the support frame includes a support rod hinged between the wheel rim and the support plate, a movable rod hinged between the wheel rim and the support plate, and a driving cylinder hinged between the support plate and the movable rod, the movable rod including an auxiliary rod hinged at one end on the lower side of the support plate and a telescopic rod hinged at one end of the auxiliary rod away from the support plate, the driving cylinder is hinged at the connection between the auxiliary rod and the telescopic rod, and a buffer spring is provided on the telescopic rod; when the driving cylinder is extended, the support rod and the movable rod support the wheel rim; when the driving cylinder is contracted, the telescopic rod and the auxiliary rod rotate around their respective hinge axes to achieve folding and storage.

[0013] By adopting the above technical solution, the design of the support frame and support wheels not only improves the stability and safety of the drone when it is stationary on the ground, but also enables rapid folding and storage without affecting the flight performance of the drone, reducing the resistance to the air. Among them, the setting of the driving cylinder can flexibly control the deployment and folding of the support frame, which is convenient for the operation of the drone before takeoff and after landing, while reducing the floor space and facilitating transportation and storage. The buffer spring can absorb the impact force when the drone lands, reduce the impact on the drone body and its internal equipment, and extend its service life.

[0014] Optionally, a protective shell is installed on the fixed plate, and the distance between the protective shell and the fixed plate gradually increases and then decreases from one end to the other end, and an installation space for installing the working platform is formed between the protective shell and the installation plate.

[0015] By adopting the above technical solution, the design of the protective shell can not only effectively prevent the influence of the external environment on the internal equipment, but also reduce the air resistance, making the drone flight more stable and smooth.

[0016] Optionally, the protective shell includes a first shell hinged on the fixing plate and a second shell hinged on the fixing plate, and the two driving devices respectively drive the first shell and the second shell to rotate to open the installation space.

[0017] By adopting the above technical solution, the first shell and the second shell are hinged on the fixed plate, which can close the installation space when not in use to prevent dust, moisture, etc. from entering, thereby improving the reliability and service life of the equipment. The two driving devices drive the first shell and the second shell to rotate respectively, which can quickly open the installation space, facilitate the rapid replacement or adjustment of the working platform, and improve the convenience of operation.

[0018] Optionally, a placement groove for installing the driving device is opened in the fixing plate, and the driving device includes a driving motor fixedly connected in the placement groove, a first driving gear fixedly connected to the output shaft of the driving motor, and a first driven gear fixedly connected to the spiral wing.

[0019] By adopting the above technical solution, the integrated design of the drive device not only improves the internal space utilization of the drone, but also simplifies the power transmission path, reduces energy loss, and improves the power output efficiency of the propeller. Specifically, the drive motor, the first driving gear, and the first driven gear are installed in the placement groove in the fixed plate, making the entire drive system more compact, reducing the overall weight of the drone, and helping to improve flight performance.

[0020] Optionally, the drive device also includes a second driving gear slidably connected to the output shaft of the drive motor, a reducer fixed to the first shell hinge shaft, and a second driven gear fixed to the reducer input shaft. The output shaft of the drive motor is also provided with a second control component for controlling the engagement or disengagement of the second driving gear and the second driven gear.

[0021] By adopting the above technical solution, the meshing / disengagement control mechanism of the second driving gear and the second driven gear allows the driving device to simultaneously drive the rotation of the spiral wing and the opening and closing of the protective shell, thereby improving the system's integration and ease of operation. The position of the second driving gear is precisely controlled by the second control member, thereby achieving flexible regulation of the opening and closing of the protective shell, thereby enhancing the system's reliability and adaptability.

[0022] Optionally, the second control component includes a first electromagnet and a second electromagnet fixedly connected to the output shaft of the driving motor, the first electromagnet and the second electromagnet are respectively located on both sides of the second driving gear, a first iron sheet is fixedly connected to one end of the second driving gear facing the first electromagnet, and a second iron sheet is fixedly connected to one end of the second driving gear facing the second electromagnet, when the first electromagnet is energized to adsorb the first iron sheet, the second driving gear is separated from the second driven gear; when the second electromagnet is energized to adsorb the second iron sheet, the second driving gear is meshed with the second driven gear.

[0023] By adopting the above technical solution, the meshing state of the second driving gear and the second driven gear can be accurately controlled to realize the opening and closing of the protective shell. Specifically, when the first electromagnet is energized to adsorb the first iron sheet, the second driving gear is separated from the second driven gear, the driving device stops working, and the protective shell remains in a closed state; when the second electromagnet is energized to adsorb the second iron sheet, the second driving gear is meshed with the second driven gear, the driving device starts, and the protective shell is driven to open, which is convenient for installing and replacing the working platform.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The mounting plate connected to the drone body can be adjusted according to the weight and size of different working platforms by sliding, ensuring that the center of gravity after installation is consistent with the center of gravity of the drone itself, thereby improving the flight stability of the drone; 2. The mounting plate is provided with multiple mounting holes for mounting the working platform, so that different types of working platforms can be installed and disassembled conveniently and quickly, thus enhancing the application scope and flexibility of the UAV; 3. The rotors are located at the front and rear ends of the drone body and are driven to rotate by a drive device, realizing a tandem double rotor layout, further optimizing the aerodynamic performance of the drone and improving the overall flight efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of this application.

[0026] Figure 2 It is a main cutaway schematic diagram of the present application.

[0027] Figure 3 This is a schematic diagram designed to illustrate the impact of airflow when the drone of this application is flying.

[0028] Figure 4 This is a schematic diagram made to illustrate the structure of the driving device of the present application.

[0029] Figure 5 This is a schematic diagram to illustrate the support frame and support wheel structure of the present application.

[0030] Figure 6 This is to reflect the structural schematic diagram of the support frame of this application when it is stored.

[0031] Description of reference numerals: 1. drone body; 11. fixing plate; 111. mounting groove; 112. linear drive member; 113. guide groove; 114. guide wheel; 115. first embedding groove; 12. support plate; 121. second embedding groove; 13. weighing sensor; 14. connecting member; 141. supporting cylinder; 142. supporting spring; 15. protective shell; 151. first shell; 152. second shell; 153. hinge axis of first shell; 154. avoidance groove; 16. installation space; 18. support frame; 181. support rod; 182. movable rod; 1821, auxiliary rod; 1822, telescopic rod; 1823, buffer spring; 1824, connecting plate; 183, driving cylinder; 19, supporting wheel; 191, wheel rim; 192, abutting wheel; 2, mounting plate; 3, spiral wing; 4, driving device; 41, driving motor; 42, first driving gear; 43, first driven gear; 44, second driving gear; 45, second driven gear; 46, second control member; 461, first electromagnet; 462, second electromagnet; 463, first iron sheet; 464, second iron sheet; 47, first control member. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-6 This application is described in further detail.

[0033] The present application embodiment discloses a tandem twin-rotor drone structure. Figures 1 to 3 The tandem twin-rotor UAV structure includes a UAV body 1, a mounting plate 2 slidably connected to the UAV body 1, a spiral wing 3 rotatably connected to both ends of the UAV body 1, and a driving device 4 for driving each spiral wing 3 to rotate. The mounting plate 2 slides along the width direction of the UAV body 1, and the two spiral wings 3 are respectively located at the front and rear ends of the UAV body 1. The two spiral wings 3 are driven by two driving devices 4 respectively, so that the rotation of the two spiral wings 3 can be controlled by the two driving devices 4 as needed.

[0034] When in use, the working platform can be directly mounted on the mounting plate 2. When different working platforms have different centers of gravity, the front and rear ends of the drone body 1 can obtain different lifts through the speed difference of the two spiral wings 3, so as to automatically adapt to the difference in the center of gravity in the length direction of the drone body 1 and ensure the flight stability of the drone body 1. When the overall center of gravity changes in the width direction of the drone body 1 after the working platform is installed, the mounting plate 2 can be operated to slide on the drone body 1 to drive the working platform mounted on the mounting plate 2 to move in the width direction of the drone body 1, so as to adjust the center of gravity of the working platform in the width direction of the drone body 1, ensure that the center of gravity of the drone in the width direction is in the middle position of the width direction of the drone body 1, and ensure the overall stability of the drone body 1.

[0035] A plurality of mounting holes are provided in a matrix on the mounting plate 2 , and internal threads are processed in the mounting holes, so that different mounting platforms can be directly mounted on the mounting plate 2 by bolts.

[0036] Reference Figure 1 and Figure 2 The drone body 1 includes a fixed plate 11, two spiral wings 3 rotatably connected to the two ends of the fixed plate 11, and a mounting groove 111 is provided on the fixed plate 11. A linear drive member 112 for driving the mounting plate 2 to slide is installed in the mounting groove 111, and the length direction of the mounting groove 111 is consistent with the width direction of the fixed plate 11. The linear drive member 112 can be a linear motor, an electric push rod, a motor screw, etc., as long as it can drive the mounting plate 2 to slide on the fixed plate 11. This application uses the linear motor as an example for explanation. The mounting plate 2 is fixedly connected to the slider of the linear motor, so that the linear motor can drive the mounting plate 2 to move along the width direction of the fixed plate 11 to adjust the center of gravity of the working platform installed on the mounting plate 2.

[0037] At the same time, two mutually parallel guide grooves 113 are also provided on the fixed plate 11, the length direction of the guide groove 113 is consistent with the length direction of the mounting groove 111 and the two guide grooves 113 are respectively located on both sides of the mounting groove 111, and two groups of guide wheels 114 are provided on the mounting plate 2, and each group of guide wheels 114 can be embedded in each guide groove 113 and slide along the length direction of the guide groove 113. A plurality of guide wheels 114 form a group, and the present application is described with two guide wheels 114 as a group, and the two guide wheels 114 are arranged at intervals along the width direction of the mounting plate 2. When the linear motor drives the mounting plate 2 to slide along the width direction of the fixed plate 11, the two groups of guide wheels 114 also slide in the two guide grooves 113. The provision of the guide wheels 114 can guide the mounting plate 2 on the one hand, so that the mounting plate 2 slides more smoothly, and can also support the mounting plate 2 on the other hand, so that the support is smoother.

[0038] Reference Figure 2 The drone body 1 also includes a support plate 12 located at the lower side of the fixed plate 11, and a weighing sensor 13 is fixedly connected between the fixed plate 11 and the support plate 12. A plurality of weighing sensors 13 are arranged at circumferential intervals around the fixed plate 11. The present application takes four weighing sensors 13 as an example for explanation, wherein two weighing sensors 13 form a group, and the two weighing sensors 13 of one group are respectively located in the middle of the two ends of the fixed plate 11, and the two weighing sensors 13 of the other group are respectively located in the middle of the two sides of the fixed plate 11, so as to detect whether the center of gravity of the fixed plate 11 in the length direction and the width direction is offset.

[0039] Meanwhile, a connecting member 14 is disposed between the fixing plate 11 and the supporting plate 12 . A plurality of connecting members 14 are also disposed at intervals around the fixing plate 11 in the axial direction to support and fix the fixing plate 11 .

[0040] Specifically, four connecting members 14 are provided, and the four connecting members 14 are respectively located at the four corners of the fixing plate 11 to support and fix the four corners of the fixing plate 11 .

[0041] Reference Figure 2 A first embedding groove 115 is provided on the lower side of the fixed plate 11, and a second embedding groove 121 corresponding to the position of the first embedding groove 115 is provided on the support plate 12. The connecting member 14 is installed in the first embedding groove 115 and the second embedding groove 121. The connecting member 14 includes a supporting cylinder 141 fixedly connected to the bottom of the first embedding groove 115 and the bottom of the second embedding groove 121, and a supporting spring 142 sleeved on the supporting cylinder 141. When the working platform is installed on the mounting plate 2, the two cavities of the supporting cylinder 141 are both connected to the outside, and the two cavities of the supporting cylinder 141 are in an open state. At this time, the supporting spring 142 and the weighing sensor 13 provide supporting force for the fixed plate 11. The weighing sensor 13 can detect the gravity at both ends and both sides of the fixed plate 11. By checking whether the data detected by the two weighing sensors 13 in the same group are the same, it can be obtained whether the center of gravity of the working platform is offset in the length direction or width direction of the fixed plate 11. If the fixed plate 11 deviates in the length direction, the rotation speeds of the two spiral wings 3 can be adjusted by the two driving devices 4, so that the center of gravity deviation in the length direction of the fixed plate 11 is balanced by the different lifts of the two spiral wings 3. If the fixed plate 11 deviates in the width direction, the linear driving member 112 can be used to drive the mounting plate 2 to slide in the width direction of the fixed plate 11, so that the center of gravity of the working platform is at the center of the width direction of the fixed plate 11.

[0042] Reference Figure 1 and Figure 2 A protective shell 15 is also installed on the fixing plate 11, and the protective shell 15 can protect the working platform installed on the mounting plate 2. The outer surface of the protective shell 15 is streamlined, and the distance from one end of the protective shell 15 to the other end and the fixing plate 11 gradually increases and then gradually decreases, so that an installation space 16 for installing the working platform is formed between the protective shell 15 and the mounting plate 2. When the working platform is installed on the mounting plate 2, the working platform is located in the installation space 16. The streamlined protective shell 15 makes the overall resistance smaller, and the external airflow can flow directly along the streamlined outer shell of the protective shell 15, greatly reducing the resistance of the drone body 1.

[0043] Reference Figure 2 and Figure 3At the same time, the plane on the lower side of the support plate 12 is set as an inclined plane. From the front end to the rear end of the drone, the bottom surface of the support plate 12 is lowered successively, so that when the drone body 1 is lifted to fly, when the airflow reaches the lower side of the support plate 12, it can flow along the lower side of the support plate 12. During the flow process, it can give the drone body 1 an upward lifting force to increase the overall load-bearing capacity of the drone body 1.

[0044] Reference Figure 1 and Figure 2 The protective shell 15 includes a first shell 151 hinged at one end on the fixing plate 11 and a second shell 152 hinged at the fixing plate 11. One end of the first shell 151 is hinged to the fixing plate 11, and the other end of the second shell 152 is hinged to the fixing plate 11. The two driving devices 4 respectively drive the first shell 151 and the second shell 152 to rotate to open the installation space 16. At the same time, an avoidance groove 154 for the spiral wing rotation shaft to pass through is opened on the opposite side of the first shell 151 and the second shell 152.

[0045] Specifically, a placement slot (not shown) for installing the drive device 4 is provided in the fixing plate 11, and two placement slots are provided, and the two placement slots are respectively used to install two drive devices 4. The present application takes the drive device 4 that drives the first shell 151 to rotate as an example for description.

[0046] Reference Figure 4 The driving device 4 includes a driving motor 41 fixedly connected to the placement slot, a first driving gear 42 installed on the output shaft of the driving motor 41, and a first driven gear 43 fixedly connected to the rotating shaft of the helical wing. Through the meshing of the first driving gear 42 and the first driven gear 43, the driving motor 41 can drive the helical wing 3 to rotate, so as to achieve the lifting of the drone body 1.

[0047] In order to realize that the driving motor 41 drives the first shell 151 to rotate, the driving device 4 also includes a second driving gear 44 slidingly connected to the output shaft of the driving motor 41, a reducer fixedly connected to the hinge shaft of the first shell 151, and a second driven gear 45 fixedly connected to the input shaft of the reducer. The driving motor 41 can drive the second driven gear 45 to rotate through the second driving gear 44 to drive the reducer to rotate, and the reducer drives the hinge shaft 153 of the first shell to rotate, so as to drive the first shell 151 fixed thereto to rotate through the hinge shaft 153 of the first shell, thereby realizing the rotation and opening of the first shell 151.

[0048] In order to achieve the meshing and disengagement of the second driving gear 44 and the second driven gear 45 , a second control member 46 for controlling the meshing or disengagement of the second driving gear 44 and the second driven gear 45 is further provided on the output shaft of the driving motor 41 .

[0049] During the flight of the drone body 1, the second control member 46 can be used to achieve the meshing and separation of the second driving gear 44 and the second driven gear 45, so that during the flight of the drone body 1, the protective shell 15 can be opened as needed without affecting the flight of the drone body 1. It is understandable that a reversing wheel can be provided between the output shaft of the drive motor 41 and the reducer to control the second control member 46 to drive the second driving gear 44 to mesh with the second driven gear 45 or to mesh with the reversing wheel through the second driving gear 44, so as to achieve the opening and closing of the protective shell 15.

[0050] Among them, in order to realize that when the drone body 1 is placed on the ground and not flying, the opening and closing of the protective shell 15 can be independently controlled, a first driving gear 42 is also slidably connected to the output shaft of the drive motor 41, and a first control member 47 for controlling the engagement or separation of the first driving gear 42 and the first driven gear 43 is provided on the output shaft of the drive motor 41. The first control member 47 and the second control member 46 have the same structure. This application takes the structure of the second control member 46 as an example for explanation.

[0051] Reference Figure 4 , the second control member 46 includes a first electromagnet 461 and a second electromagnet 462 fixedly connected to the output shaft of the driving motor 41, and the first electromagnet 461 and the second electromagnet 462 are respectively located on both sides of the second driving gear 44, and at the same time, a first iron sheet 463 is fixedly connected to the side of the second driving gear 44 facing the first electromagnet 461, and a second iron sheet 464 is fixedly connected to the side of the second driving gear 44 facing the second electromagnet 462. When the protective shell 15 does not need to be opened, the first electromagnet 461 is energized to adsorb the first iron sheet 463, and the second driving gear 44 and the second driven gear 45 are separated. When the protective shell 15 needs to be opened, the first electromagnet 461 is powered off, and the second electromagnet 462 is powered on. At this time, the second electromagnet 462 adsorbs the second iron sheet 464, and the second driving gear 44 and the second driven gear 45 are meshed, so that the first shell 151 can be driven to rotate by the driving motor 41 to open the protective shell 15.

[0052] Reference Figure 5 and Figure 6 The drone body 1 also includes a support frame 18 installed on the lower side of the support plate 12 and a support wheel 19 installed at one end of the support frame 18 away from the support plate 12, wherein a plurality of support frames 18 are provided, two support frames 18 form a group, and the two support frames 18 in the same group are respectively located on both sides of the support plate 12. Multiple groups of support frames 18 can be arranged at intervals along the length direction of the support plate 12. This application takes two groups of support frames 18 as an example for explanation.

[0053] The supporting wheel 19 includes a wheel rim 191 and an abutting wheel 192 rotatably connected to the wheel rim 191 . The abutting wheel 192 is spherical as a whole, and the inner hole of the wheel rim 191 is larger than the hemispherical shape to accommodate the abutting wheel 192 .

[0054] The support frame 18 includes a support rod 181 hinged between the wheel rim 191 and the support plate 12, a movable rod 182 hinged between the wheel rim 191 and the support plate 12, and a driving cylinder 183 hinged between the support plate 12 and the movable rod 182. Among them, a stable triangular support structure is formed between the support rod 181, the movable rod 182 and the support plate 12. The movable rod 182 includes an auxiliary rod 1821 hinged at one end to the lower side of the support plate 12 and a telescopic rod 1822 hinged between the auxiliary rod 1821 and the support plate 12, and the driving cylinder 183 is hinged at the connection between the auxiliary rod 1821 and the telescopic rod 1822. By driving the cylinder 183 to extend and retract, the telescopic rod 1822 and the auxiliary rod 1821 can be driven to rotate around the hinge axis of the two, so as to drive the support rod 181 to rotate around the hinge axis with the support plate 12, so as to realize the storage of the support frame 18. When the cylinder 183 is extended, the telescopic rod 1822 and the auxiliary rod 1821 can be driven to rotate relative to each other, so that the telescopic rod 1822 and the auxiliary rod 1821 are located on the same straight line, thereby supporting the support wheel 19.

[0055] Among them, a buffer spring 1823 is also sleeved on the telescopic rod 1822, and the two ends of the buffer spring 1823 are respectively fixed to the two ends of the telescopic rod 1822. Under the elastic force of the buffer spring 1823, the telescopic position of the telescopic rod 1822 can be fixed to achieve support for the support wheel 19 and support for the drone body 1. When the drone body 1 falls to the ground, the abutment wheel 192 will first contact the ground, and under the gravity of the drone body 1, the telescopic rod 1822 can be extended and retracted to achieve buffering of the drone body 1. The setting of the telescopic rod 1822 can not only achieve buffering of the drone body 1, but also limit the range of movement of the abutment wheel 192 to ensure the support force for the drone body 1.

[0056] Of course, a receiving groove for the support frame 18 to be embedded in when stored can also be opened on the support plate 12, so that when the drone body 1 is in flight, the support frame 18 can be stored in the receiving groove to reduce the resistance generated by the support frame 18.

[0057] Reference Figure 5 and Figure 6When the support frame 18 is stored, the piston rod of the cylinder 183 is directly operated to retract, which can drive the auxiliary rod 1821 and the telescopic rod 1822 to rotate around the hinge axis of the two and approach each other. At this time, the piston rod of the cylinder 183 is also driven to rotate around the hinge axis of the support plate 12 until the auxiliary rod 1821 is parallel to the support plate 12, and the side wall of the telescopic rod 1822 abuts against the side wall of the auxiliary rod 1821 and the two are parallel to each other, thereby realizing the storage of the support frame 18.

[0058] In order to allow the telescopic rod 1822 to rotate to be parallel to the auxiliary rod 1821, a connecting plate 1824 is vertically fixed to the end of the auxiliary rod 1821 away from the support plate 12, and the telescopic rod 1822 is hinged at the end of the connecting plate 1824 away from the auxiliary rod 1821, and the piston rod of the driving cylinder 183 is hinged at the connection between the connecting plate 1824 and the telescopic rod 1822, so that the space occupied can be reduced when stored. When the driving cylinder 183 is extended to drive the support frame 18 to support the drone body 1, a stable triangular support structure is formed between the driving cylinder 183, the auxiliary rod 1821 and the auxiliary rod 1821. The support rod 181, the wheel rim 191, the driving cylinder 183 and the telescopic rod 1822 bracket form a trapezoidal structure with an upper bottom edge close to 0, and the telescopic characteristics of the telescopic rod 1822 allow the structure to slide within a certain range, while playing a buffering role, it can also maintain the support performance for the drone body 1.

[0059] The implementation principle of a tandem twin-rotor drone structure in the embodiment of the present application is as follows: when different work platforms need to be installed on the mounting plate 2, the second driving gear 44 and the second driven gear 45 are directly meshed through the second control member 46, and the protective shell 15 can be driven to rotate by the driving motor 41 to open the installation space 16. At this time, the staff can install the work platform on the mounting plate 2 through bolts. At the same time, the weighing sensor 13 can also detect the pressure around the mounting plate 2 to determine whether the center of gravity of the work platform is located at the center of the mounting plate 2. When it is detected that the center of gravity of the work platform is offset in the width direction of the fixed plate 11, the linear drive member 112 automatically drives the mounting plate 2 to slide on the fixed plate 11 to adjust the center of gravity of the entire work platform until the center of gravity of the work platform is located at the center of the width direction of the fixed plate 11. When it is detected that the center of the work platform is offset in the length direction of the fixed plate 11, the rotation speeds of the two driving motors 41 can be controlled to be different, so that the front and rear ends of the drone body 1 have different lifts to ensure the overall flight stability of the drone body 1. The application scope of the UAV is greatly improved, so that different work platforms can ensure the consistency of the center of gravity when installed on the UAV, thereby improving the flight stability of the UAV.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tandem twin-rotor UAV structure, characterized by: The invention comprises an unmanned aerial vehicle body (1), a mounting plate (2) slidably connected to the unmanned aerial vehicle body (1), spiral wings (3) rotatably connected to the two ends of the unmanned aerial vehicle body (1), and a driving device (4) for driving each spiral wing (3) to rotate, wherein the two spiral wings (3) are respectively located at the front and rear ends of the unmanned aerial vehicle body (1), the mounting plate (2) slides along the width direction of the unmanned aerial vehicle body (1), and the mounting plate (2) is provided with a plurality of mounting holes for mounting a working platform.

2. The tandem twin-rotor UAV structure according to claim 1 is characterized in that: The drone body (1) comprises a fixing plate (11), the two spiral wings (3) are rotatably connected to the two ends of the fixing plate (11), the mounting plate (2) is slidably connected to the fixing plate (11), a linear drive member (112) for driving the mounting plate (2) to slide is fixedly connected to the fixing plate (11), and a mounting groove (111) for embedding the linear drive member (112) is provided on the fixing plate (11).

3. The tandem twin-rotor UAV structure according to claim 2 is characterized in that: The drone body (1) further comprises a support plate (12) located at the lower side of the fixing plate (11); a weighing sensor (13) is fixedly connected between the fixing plate (11) and the support plate (12); the weighing sensor (13) is located around the fixing plate (11); a connecting member (14) is arranged between the fixing plate (11) and the support plate (12); a plurality of connecting members (14) are arranged at intervals around the circumference of the fixing plate (11).

4. The tandem twin-rotor UAV structure according to claim 3 is characterized in that: A first embedding groove (115) is provided on the lower side of the fixing plate (11), a second embedding groove (121) corresponding to the first embedding groove (115) is provided on the supporting plate (12), and the connecting member (14) comprises a supporting cylinder (141) fixedly connected to the bottom of the first embedding groove (115) and the bottom of the second embedding groove (121), and a supporting spring (142) sleeved on the supporting cylinder (141).

5. The tandem twin-rotor UAV structure according to claim 3 is characterized by: The drone body (1) further comprises a support frame (18) mounted on the lower side of the support plate (12) and a support wheel (19) mounted on one end of the support frame (18) away from the support plate (12); the support wheel (19) comprises a wheel rim (191) and an abutment wheel (192) rotatably connected to the wheel rim (191); the support frame (18) comprises a support rod (181) hinged between the wheel rim (191) and the support plate (12), a movable rod (182) hinged between the wheel rim (191) and the support plate (12), and a driving cylinder (183) hinged between the support plate (12) and the movable rod (182), wherein the movable rod (182) The invention comprises an auxiliary rod (1821) having one end hinged to the lower side of the support plate (12) and a telescopic rod (1822) hinged to the end of the auxiliary rod (1821) away from the support plate (12); the driving cylinder (183) is hinged at the connection between the auxiliary rod (1821) and the telescopic rod (1822); a buffer spring (1823) is sleeved on the telescopic rod (1822); when the driving cylinder (183) is extended, the support rod (181) and the movable rod (182) support the wheel rim (191); when the driving cylinder (183) is contracted, the telescopic rod (1822) and the auxiliary rod (1821) rotate around their hinge axis to achieve folding and storage.

6. The tandem twin-rotor UAV structure according to claim 2, characterized in that: A protective shell (15) is installed on the fixing plate (11), and the distance between the protective shell (15) and the fixing plate (11) gradually increases and then gradually decreases from one end to the other end, and an installation space (16) for installing a working platform is formed between the protective shell (15) and the installation plate (2).

7. The tandem twin-rotor UAV structure according to claim 6, characterized in that: The protective shell (15) comprises a first shell (151) hinged on the fixing plate (11) and a second shell (152) hinged on the fixing plate (11), and the two driving devices (4) respectively drive the first shell (151) and the second shell (152) to rotate so as to open the installation space (16).

8. The tandem twin-rotor UAV structure according to claim 7 is characterized in that: The fixing plate (11) is provided with a placement groove for installing the driving device (4), and the driving device (4) comprises a driving motor (41) fixedly connected to the placement groove, a first driving gear (42) fixedly connected to the output shaft of the driving motor (41), and a first driven gear (43) fixedly connected to the spiral wing (3).

9. The tandem twin-rotor UAV structure according to claim 8, characterized in that: The drive device (4) further comprises a second driving gear (44) slidably connected to the output shaft of the drive motor (41), a reducer fixedly connected to the hinge shaft (153) of the first shell, and a second driven gear (45) fixedly connected to the input shaft of the reducer. The output shaft of the drive motor (41) is also provided with a second control member (46) for controlling the engagement or separation of the second driving gear (44) and the second driven gear (45).

10. The tandem twin-rotor UAV structure according to claim 9, characterized in that: The second control member (46) comprises a first electromagnet (461) and a second electromagnet (462) fixedly connected to the output shaft of the driving motor (41); the first electromagnet (461) and the second electromagnet (462) are respectively located on both sides of the second driving gear (44); a first iron sheet (463) is fixedly connected to one end of the second driving gear (44) facing the first electromagnet (461); and a second iron sheet (464) is fixedly connected to one end of the second driving gear (44) facing the second electromagnet (462); when the first electromagnet (461) is energized to absorb the first iron sheet (463), the second driving gear (44) is separated from the second driven gear (45); when the second electromagnet (462) is energized to absorb the second iron sheet (464), the second driving gear (44) is meshed with the second driven gear (45).

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