A damping device for an oil-electric hybrid drone engine

Abstract

The utility model relates to an unmanned plane technical field, concretely relates to a shock damper for oil -electric hybrid unmanned plane engine, including unmanned plane body, the unmanned plane body includes roof and bottom plate, the roof top fixedly connected with oil tank, the roof between the bottom plate four corners installs the fixing frame, the surface of roof, bottom plate and fixing frame is equipped with mounting hole, the front and back two ends of roof are provided with adjusting structure, the bottom of bottom plate is provided with mounting structure. The utility model sets up adjusting structure, can adjust the precompression of shock absorbing spring, increase the service life of adjusting structure, need not frequently replace adjusting structure, it is convenient to use, set up mounting hole, fixed block, connecting block and fixed bolt, convenient for unmanned plane body and mounting structure between installation dismounting, can replace locally when damage appears, it is convenient to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to a shock absorption device for the engine of a hybrid electric UAV. Background Technology

[0002] Hybrid unmanned aerial vehicles (UAVs), also known as new dual-power UAVs, refer to unmanned aerial vehicles that are equipped with both electric drive (solar energy, batteries) and conventional engines (propellers / turbofans), combining quietness, long endurance and excellent take-off and landing performance.

[0003] While existing drone engines have adjustable structures, these structures are not adjustable, and their shock absorption effect weakens after prolonged use, requiring frequent replacement of the adjustable structures, which is inconvenient to use. Furthermore, existing drones and their adjustable structures are fixed together, making installation, disassembly, and maintenance difficult. Therefore, we propose a shock absorption device for hybrid electric drone engines. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a shock absorption device for a hybrid electric drone engine, so as to solve the problems mentioned in the background art that the shock absorption effect of existing drone engines will weaken after long-term use, requiring frequent replacement of the adjustment structure, which is inconvenient to use, and that existing drones and their adjustment structures are fixedly set, making installation and disassembly troublesome and difficult to maintain.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shock-absorbing device for a hybrid electric drone engine, comprising a drone body, the drone body including a top plate and a bottom plate, a fuel tank fixedly connected to the top of the top plate, and mounting brackets installed at the four corners between the top plate and the bottom plate. Mounting holes are provided on the surfaces of the top plate, the bottom plate, and the mounting brackets. Adjustment structures are provided at the front and rear ends of the top plate. The adjustment structure includes a fixed cylinder, an adjustment groove on the top of the fixed cylinder, a connecting groove on the bottom of the fixed cylinder, a hand-tightening knob rotatably connected to the top of the fixed cylinder, a threaded rod fixedly connected to the bottom of the hand-tightening knob, and a threaded rod fixedly connected to the bottom of the threaded rod. The system includes a limit block, an adjusting plate slidably connected inside the adjusting groove, a rotating groove on the top of the adjusting plate, a shock-absorbing spring fixedly connected to the bottom of the adjusting plate, a damper fixedly connected to the bottom of the adjusting plate, a telescopic rod installed at the bottom of the damper, an installation structure at the bottom of the base plate including an installation plate, a protective cover at the bottom of the installation plate, fixing blocks fixedly connected to the front and rear ends of the bottom of the installation plate, a connecting block movably connected inside the fixing block, a fixing bolt rotatably connected to the bottom of the fixing block, a motor fixedly connected to the bottom of the installation plate, an engine fixedly connected to the bottom of the installation plate, and a control box fixedly connected to the top of the base plate.

[0006] Preferably, the fuel tank is connected to the engine via a connecting pipe, the input end of the electric motor is connected to the output end of the engine via a synchronous belt, the electric motor and the engine are both electrically connected to the control box, and the control box is equipped with a controller and a battery for coordinating the operation of the electric motor and the engine.

[0007] Preferably, the top plate, the bottom plate, and the fixing frame are fixed to each other by bolts and mounting holes.

[0008] Preferably, the fixing cylinder is fixedly connected to the front and rear ends of the bottom of the top plate, the bottom of the fixing cylinder is in contact with the top of the bottom plate, a threaded groove is formed on the surface of the top plate and the top of the fixing cylinder, the threaded rod is rotatably connected in the threaded groove, the limiting block is rotatably connected in the rotating groove, the bottom of the threaded rod passes through the top of the rotating groove and is fixedly connected to the limiting block, and the radius of the limiting block is larger than the radius of the threaded rod.

[0009] Preferably, the adjusting groove and the connecting groove are interconnected, the top end of the damping spring is fixedly connected to the bottom of the adjusting plate, the bottom end of the damping spring passes through the connecting groove and is fixedly connected to the top of the base plate, and the surface of the damping spring does not contact the surface of the damper and the connecting groove.

[0010] Preferably, the bottom of the telescopic rod passes through the base plate and the mounting plate and is inserted into the fixing block. The bottom of the telescopic rod, the surface of the fixing block and the connecting block are all provided with threaded grooves, and the fixing bolt is rotatably connected in the threaded grooves.

[0011] Preferably, the protective cover is made of transparent acrylic material and is snapped onto the bottom of the mounting plate by clips.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This vibration damping device for a hybrid electric drone engine features an adjustment structure. The vibrations generated by the motor and engine during operation cause the mounting plate to vibrate, which is then transmitted upwards to the telescopic rod. The telescopic rod pushes and pulls the damper and compresses and stretches the damping spring. The damper dissipates energy, while the damping spring stores and releases energy, thus absorbing and dissipating the vibration energy. The vibration transmitted to the top and bottom plates is significantly reduced. After prolonged use, rotating the hand-tightening knob causes the threaded rod to rotate and rise / fall in conjunction with the threaded groove. With the cooperation of the limiting block and the rotating groove, the limiting block can rotate within the rotating groove along the threaded rod, simultaneously causing the adjustment plate to move axially along the threaded rod. This allows the adjustment plate to slide up and down within the adjustment groove, thereby changing the pre-compression / initial length of the damping spring, and consequently altering the stiffness and natural frequency of the entire damping unit. After prolonged use and weakening of the damping spring, the pre-compression of the damping spring can be adjusted, increasing the service life of the adjustment structure. This eliminates the need for frequent replacement of the adjustment structure, making it convenient to use.

[0013] 2. This shock absorption device for a hybrid electric drone engine is equipped with mounting holes, fixing blocks, connecting blocks, and fixing bolts. During installation, the top plate, bottom plate, and mounting frame are connected and fixed to each other through the mounting holes. The mounting plate is placed at the bottom of the bottom plate, and the mounting plate is moved up so that the telescopic rod is inserted into the mounting plate and aligned with the connecting block. The fixing blocks, connecting blocks, and telescopic rod are fixed to each other with fixing bolts, which facilitates the installation and disassembly of the drone body and the mounting structure. If damage occurs, the damaged parts can be replaced, making maintenance relatively convenient. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an exploded view of the structure of the UAV body and mounting structure of this utility model; Figure 3 This is a bottom-view exploded view of the installation structure of this utility model; Figure 4 This is a front sectional view of the structure of this utility model; Figure 5 This is an exploded cross-sectional view of the adjusting structure of this utility model.

[0015] In the diagram: 1. UAV body; 11. Top plate; 12. Fuel tank; 13. Base plate; 14. Mounting frame; 15. Mounting hole; 2. Adjustment structure; 21. Fixing cylinder; 22. Adjustment groove; 23. Connecting groove; 24. Hand-tightening knob; 25. Threaded rod; 26. Limit block; 27. Adjustment plate; 28. Rotation groove; 29. ​​Shock-absorbing spring; 210. Damper; 211. Telescopic rod; 3. Installation structure; 31. Mounting plate; 32. Protective cover; 33. Fixing block; 34. Connecting block; 35. Fixing bolt; 36. Electric motor; 37. Engine. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 One embodiment provided by this utility model: A shock-absorbing device for a hybrid electric unmanned aerial vehicle (UAV) engine includes a UAV body 1. The UAV body 1 includes a top plate 11 and a bottom plate 13. A fuel tank 12 is fixedly connected to the top of the top plate 11. Fixing brackets 14 are installed at the four corners between the top plate 11 and the bottom plate 13. Mounting holes 15 are formed on the surfaces of the top plate 11, the bottom plate 13, and the fixing brackets 14. Adjustment structures 2 are provided at the front and rear ends of the top plate 11. The adjustment structure 2 includes a fixed cylinder 21. An adjustment groove 22 is formed on the top of the fixed cylinder 21. A connecting groove 23 is formed on the bottom of the fixed cylinder 21. A hand-tightening knob 24 is rotatably connected to the top of the fixed cylinder 21. A threaded rod 25 is fixedly connected to the bottom of the hand-tightening knob 24. A limit block 26 is fixedly connected to the bottom of the threaded rod 25. The adjustment groove 22 slides inside. An adjusting plate 27 is connected, with a rotating groove 28 on its top. A shock-absorbing spring 29 is fixedly connected to the bottom of the adjusting plate 27, and a damper 210 is fixedly connected to the bottom of the adjusting plate 27. A telescopic rod 211 is installed at the bottom of the damper 210. An installation structure 3 is provided at the bottom of the base plate 13, including an installation plate 31. A protective cover 32 is provided at the bottom of the installation plate 31. Fixing blocks 33 are fixedly connected to the front and rear ends of the bottom of the installation plate 31. A connecting block 34 is movably connected inside the fixing block 33. A fixing bolt 35 is rotatably connected to the bottom of the fixing block 33. A motor 36 is fixedly connected to the bottom of the installation plate 31, and an engine 37 is fixedly connected to the bottom of the installation plate 31. A control box 4 is fixedly connected to the top of the base plate 13. The vibrations generated by the operation of the adjustment structure 2, the electric motor 36, and the engine 37 cause the mounting plate 31 to vibrate. The vibrations are transmitted upward to the telescopic rod 211, which pushes and pulls the damper 210 and compresses and stretches the shock-absorbing spring 29. The damper 210 dissipates energy while the shock-absorbing spring 29 stores and releases energy, thus absorbing and dissipating the vibration energy. The vibrations transmitted to the top plate 11 and the bottom plate 13 are greatly reduced. After long-term use, rotating the hand-tightening knob 24 causes the threaded rod 25 to rotate and rise in conjunction with the threaded groove. With the cooperation of the limiting block 26 and the rotating groove 28, the limiting block 26 can rotate with the threaded rod 25 in the rotating groove 28, while simultaneously driving the adjustment plate 27 to move axially along the threaded rod 25. This allows the adjustment plate 27 to slide up and down in the adjustment groove 22, thereby changing the shock-absorbing spring. The pre-compression of spring 29 / initial length changes the stiffness and natural frequency of the entire damping unit. After prolonged use and weakening of the damping spring 29, the pre-compression of spring 29 can be adjusted to increase the service life of adjustment structure 2, eliminating the need for frequent replacement and making it more convenient to use. It is equipped with mounting holes 15, fixing blocks 33, connecting blocks 34, and fixing bolts 35. During installation, the top plate 11, bottom plate 13, and fixing frame 14 are connected and fixed together through mounting holes 15. The mounting plate 31 is placed at the bottom of the bottom plate 13, and the mounting plate 31 is moved upwards so that the telescopic rod 211 is inserted into the mounting plate 31 and aligned with the connecting block 34. The fixing blocks 33, connecting blocks 34, and telescopic rod 211 are then fixed together with fixing bolts 35.This facilitates the installation and disassembly of the drone body 1 and the mounting structure 3, allowing for partial replacement in case of damage, making maintenance relatively convenient.

[0018] Furthermore, the fuel tank 12 is connected to the engine 37 via a connecting pipe, and the input end of the electric motor 36 is connected to the output end of the engine 37 via a synchronous belt. Both the electric motor 36 and the engine 37 are electrically connected to the control box 4. The control box 4 is equipped with a controller and a battery for coordinating the operation of the electric motor 36 and the engine 37. The battery supplies power to the electric motor 36, thereby driving the UAV. At the same time, the engine 37 can drive the input end of the electric motor 36 to rotate, thereby generating electricity. This is the prior art.

[0019] Furthermore, the top plate 11, the bottom plate 13, and the fixing frame 14 are fixed to each other by bolts and mounting holes 15, which facilitates the installation and disassembly of the top plate 11, the bottom plate 13, and the fixing frame 14. During maintenance, only the damaged parts need to be replaced, without replacing the whole unit.

[0020] Furthermore, the fixed cylinder 21 is fixedly connected to the front and rear ends of the bottom of the top plate 11. The bottom of the fixed cylinder 21 is in contact with the top of the bottom plate 13. A threaded groove is provided on the surface of the top plate 11 and the top of the fixed cylinder 21. The threaded rod 25 is rotatably connected in the threaded groove. The limiting block 26 is rotatably connected in the rotating groove 28. The bottom of the threaded rod 25 passes through the top of the rotating groove 28 and is fixedly connected to the limiting block 26. The radius of the limiting block 26 is larger than the radius of the threaded rod 25. By rotating the hand-turning knob 24, the threaded rod 25 rotates and rises and falls in cooperation with the threaded groove. With the cooperation of the limiting block 26 and the rotating groove 28, the limiting block 26 can rotate with the threaded rod 25 in the rotating groove 28 while driving the adjusting plate 27 to move axially along the threaded rod 25, so that the adjusting plate 27 slides up and down in the adjusting groove 22.

[0021] Furthermore, the adjusting groove 22 and the connecting groove 23 are interconnected. The top end of the damping spring 29 is fixedly connected to the bottom of the adjusting plate 27, and the bottom end of the damping spring 29 passes through the connecting groove 23 and is fixedly connected to the top of the base plate 13. The surface of the damping spring 29 does not contact the surfaces of the damper 210 and the connecting groove 23. By changing the position of the adjusting plate 27 in the adjusting groove 22, the pre-compression of the damping spring 29 is changed, thereby adjusting the damping effect.

[0022] Furthermore, the bottom of the telescopic rod 211 penetrates the base plate 13 and the mounting plate 31 and is inserted into the fixing block 33. The bottom of the telescopic rod 211, the surface of the fixing block 33 and the connecting block 34 are all provided with threaded grooves. The fixing bolts 35 are rotatably connected in the threaded grooves. The mounting plate 31 is placed at the bottom of the base plate 13. The mounting plate 31 is moved up so that the telescopic rod 211 is inserted into the mounting plate 31 and aligned with the connecting block 34. The fixing block 33, the connecting block 34 and the telescopic rod 211 are fixed to each other by the fixing bolts 35.

[0023] Furthermore, the protective cover 32 is made of transparent acrylic material. The protective cover 32 is snapped onto the bottom of the mounting plate 31 by a buckle. The condition of the internal motor 36 and engine 37 can be directly observed through the protective cover 32. The snap-fit ​​design makes the protective cover 32 easy to install and remove.

[0024] Working principle: The vibration generated by the operation of the electric motor 36 and engine 37 causes the mounting plate 31 to vibrate. The vibration is transmitted upward to the telescopic rod 211. The telescopic rod 211 pushes and pulls the damper 210 and compresses and stretches the shock-absorbing spring 29. The damper 210 consumes energy while the shock-absorbing spring 29 stores and releases energy, so the vibration energy is absorbed and dissipated. The vibration transmitted to the top plate 11 and the bottom plate 13 is greatly reduced. After long-term use, rotating the hand-tightening knob 24 causes the threaded rod 25 to rotate and rise in conjunction with the threaded groove. With the cooperation of the limiting block 26 and the rotating groove 28, the limiting block 26 can rotate with the threaded rod 25 in the rotating groove 28, while driving the adjusting plate 27 to move axially along the threaded rod 25, so that the adjusting plate 27 moves upward in the adjusting groove 22. The damping spring 29 is slid down, thereby changing its pre-compression / initial length, which in turn changes the stiffness and natural frequency of the entire damping unit. After the damping of the damping spring 29 weakens after long-term use, the pre-compression of the damping spring 29 can be adjusted. During installation, the top plate 11, bottom plate 13 and fixing frame 14 are connected and fixed to each other through mounting holes 15. The mounting plate 31 is placed at the bottom of the bottom plate 13, and the mounting plate 31 is moved up so that the telescopic rod 211 is inserted into the mounting plate 31 and aligned with the connecting block 34. The fixing block 33, connecting block 34 and telescopic rod 211 are fixed to each other by fixing bolts 35, which facilitates the installation and disassembly of the UAV body 1 and the mounting structure 3. If damage occurs, the parts can be replaced.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A shock absorption device for a hybrid electric unmanned aerial vehicle (UAV) engine, comprising the UAV body (1), characterized in that: The UAV body (1) includes a top plate (11) and a bottom plate (13). A fuel tank (12) is fixedly connected to the top of the top plate (11). Fixing brackets (14) are installed at the four corners between the top plate (11) and the bottom plate (13). Mounting holes (15) are provided on the surfaces of the top plate (11), the bottom plate (13), and the fixing brackets (14). Adjustment structures (2) are provided at the front and rear ends of the top plate (11). The adjustment structure (2) includes a fixed cylinder (21). An adjustment groove (22) is provided at the top of the fixed cylinder (21). A connecting groove (23) is provided at the bottom of the fixed cylinder (21). A hand-tightening knob (24) is rotatably connected to the top of the fixed cylinder (21). A threaded rod (25) is fixedly connected to the bottom of the hand-tightening knob (24). A limit block (26) is fixedly connected to the bottom of the threaded rod (25). An adjustment plate (27) is slidably connected inside the adjustment groove (22). The top of the adjustment plate (27) is provided with a rotating groove (28), the bottom of the adjustment plate (27) is fixedly connected with a shock-absorbing spring (29), the bottom of the adjustment plate (27) is fixedly connected with a damper (210), the bottom of the damper (210) is equipped with a telescopic rod (211), the bottom of the base plate (13) is provided with an installation structure (3), the installation structure (3) includes an installation plate (31), the bottom of the installation plate (31) is provided with a protective cover (32), the bottom of the installation plate (31) is fixedly connected with a fixing block (33) at both ends, the inside of the fixing block (33) is movably connected with a connecting block (34), the bottom of the fixing block (33) is rotatably connected with a fixing bolt (35), the bottom of the installation plate (31) is fixedly connected with a motor (36), the bottom of the installation plate (31) is fixedly connected with an engine (37), and the top of the base plate (13) is fixedly connected with a control box (4).

2. The shock absorption device for a hybrid electric unmanned aerial vehicle engine according to claim 1, characterized in that: The fuel tank (12) is connected to the engine (37) via a connecting pipe. The input end of the electric motor (36) is connected to the output end of the engine (37) via a synchronous belt. The electric motor (36) and the engine (37) are both electrically connected to the control box (4). The control box (4) is equipped with a controller and a battery for coordinating the operation of the electric motor (36) and the engine (37).

3. A vibration damping device for a hybrid electric unmanned aerial vehicle engine according to claim 1, characterized in that: The top plate (11), the bottom plate (13), and the fixing frame (14) are fixed to each other by bolts and mounting holes (15).

4. A vibration damping device for a hybrid unmanned aerial vehicle engine according to claim 1, characterized in that: The fixed cylinder (21) is fixedly connected to the bottom front and rear ends of the top plate (11). The bottom of the fixed cylinder (21) is in contact with the top of the bottom plate (13). A threaded groove is provided on the surface of the top plate (11) and the top of the fixed cylinder (21). The threaded rod (25) is rotatably connected in the threaded groove. The limiting block (26) is rotatably connected in the rotating groove (28). The bottom of the threaded rod (25) passes through the top of the rotating groove (28) and is fixedly connected to the limiting block (26). The radius of the limiting block (26) is larger than the radius of the threaded rod (25).

5. A vibration damping device for a hybrid unmanned aerial vehicle engine according to claim 1, characterized in that: The adjustment groove (22) and the connecting groove (23) are interconnected. The top end of the shock-absorbing spring (29) is fixedly connected to the bottom of the adjustment plate (27). The bottom end of the shock-absorbing spring (29) passes through the connecting groove (23) and is fixedly connected to the top of the base plate (13). The surface of the shock-absorbing spring (29) does not contact the surfaces of the damper (210) and the connecting groove (23).

6. A vibration damping device for a hybrid unmanned aerial vehicle engine according to claim 1, characterized in that: The bottom of the telescopic rod (211) passes through the base plate (13) and the mounting plate (31) and is inserted into the fixing block (33). The bottom of the telescopic rod (211), the surface of the fixing block (33) and the connecting block (34) are all provided with threaded grooves. The fixing bolt (35) is rotatably connected in the threaded grooves.

7. A vibration damping device for a hybrid unmanned aerial vehicle engine according to claim 1, characterized in that: The protective cover (32) is made of transparent acrylic material and is snapped onto the bottom of the mounting plate (31) by a buckle.

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