Four-rotor unmanned aerial vehicle take-off platform

Abstract

The invention is suitable for the technical field of unmanned aerial vehicles, and provides a four-rotor unmanned aerial vehicle take-off platform which comprises a box body, a partition plate fixedly installed in the box body and a take-off platform body arranged in the box body and used for providing take-off of an unmanned aerial vehicle. The threaded cylinder is slidably arranged on the partition plate and used for adjusting the height of the take-off platform; the reset springs are fixedly mounted on the partition plate and the take-off platform and used for assisting the unmanned aerial vehicle in taking off; the driving mechanism is arranged in the box body and is used for driving the threaded cylinder to slide up and down; and the connecting mechanism is arranged on the take-off platform and the threaded cylinder and is used for connecting the threaded cylinder and the take-off platform. According to the four-rotor unmanned aerial vehicle take-off platform, through the design of the lifting mechanism and the reset springs, efficient and safe take-off of the unmanned aerial vehicle is achieved, and meanwhile the take-off flexibility and adaptability are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of unmanned aerial vehicles (UAVs), and in particular relates to a take-off platform for a four-rotor UAV. Background Art

[0002] Unmanned aerial vehicles, also known as "drones", are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices, or are operated completely or intermittently autonomously by on-board computers. According to their use, drones can be divided into military drones and civilian drones.

[0003] At present, existing drones are usually placed on the ground for takeoff, but due to the low altitude, the drones cannot take off easily. When there are weeds on the ground, the drones are not safe to take off, and the wings are easily damaged by the weeds. Therefore, the drones are greatly affected by the environment when taking off. At the same time, the most difficult part of drone operation is takeoff and landing. Summary of the Invention

[0004] The present invention provides a take-off platform for a quad-rotor UAV, aiming to solve the problems in the above-mentioned background art that it is unsafe for the UAV to take off on the ground and weeds are easily cut into the wings.

[0005] To solve the above problems, the present invention is implemented as follows: a four-rotor UAV take-off platform includes: a box body and a partition fixedly installed in the box body, and a take-off platform arranged in the box body for providing a UAV take-off; a threaded cylinder slidably arranged on the partition body for adjusting the height of the take-off platform; a return spring fixedly installed on the partition body and the take-off platform for assisting the UAV take-off; a driving mechanism arranged in the box body for driving the threaded cylinder to slide up and down; and a connecting mechanism arranged on the take-off platform and the threaded cylinder for connecting the threaded cylinder and the take-off platform.

[0006] Preferably, the driving mechanism includes: a threaded rod rotatably installed at the bottom of the inner wall of the box, the threaded rod is threadedly connected to the threaded barrel; a rotating rod rotatably installed at the bottom of the inner wall of the box, and the rotating rod and the threaded rod are both fixedly provided with a first bevel gear, and the two first bevel gears are meshed with each other; a motor fixedly installed at the bottom of the partition; a group of first sprockets respectively installed on the rotating rod and the motor output shaft; a first chain mounted on a group of the first sprockets, and the first chain is meshed with a group of the first sprockets.

[0007] Preferably, a guide rod for guiding the take-off platform is fixedly installed on the top of the partition, and the guide rod slides through the return spring and the take-off platform. A plurality of ventilation holes are opened on the box body, and mesh panels are installed in the plurality of ventilation holes.

[0008] Preferably, a limit plate is fixedly installed on one side of the inner wall of the box body, and the limit plate is located above the take-off platform and is used to limit the rising height of the take-off platform. A buffer sponge is fixedly installed on the bottom of the limit plate to prevent the take-off platform from collision.

[0009] Preferably, a group of landing platforms are rotatably mounted on the top of the box, and each of the landing platforms is equipped with a buffer pad.

[0010] Preferably, differential wheels are installed on the rotating shafts of the box body and the landing platform, and the two differential wheels are meshed with each other. A connecting rod is rotatably installed in the box body, and a second sprocket is fixedly installed on the connecting rod and the differential wheel located on one side of the box body. A second chain is sleeved on the two second sprockets, and a second bevel gear is fixedly sleeved on the other end of the connecting rod and the rotating rod, and the two second bevel gears are meshed with each other.

[0011] Preferably, a protective cover is fixedly installed on one side of the box body, the protective cover is provided on the two second sprockets, and the top of the protective cover is provided in an open shape.

[0012] Preferably, the connecting mechanism includes: a connecting block fixedly installed at the bottom of the take-off platform; a fixing rod slidably installed on the connecting block for fixing the threaded barrel, one end of the fixing rod is engaged with the slot of the threaded barrel; a connecting spring sleeved on the fixing rod, the two ends of the connecting spring are respectively fixedly connected to the baffle of the fixing rod and the connecting block.

[0013] Preferably, an inclined rod is fixedly installed on the top of the partition, a notch is provided on the fixed rod, and a roller is rotatably installed in the notch.

[0014] Preferably, the threaded barrel is rectangular to prevent it from slipping on the partition, and the side edges of the threaded barrel and the bottom edge of the fixing rod are both arc-shaped.

[0015] Compared with related technologies, the quadcopter takeoff platform provided by the present invention has the following beneficial effects: Compared with the existing technology, the four-rotor UAV take-off platform provided by this solution can take off from a relatively high position through the lifting mechanism of the take-off platform, avoiding damage to the wings by obstacles such as ground weeds, improving the safety of take-off, and at the same time, by adjusting the height of the threaded barrel to adapt to take-off requirements at different heights, the take-off flexibility of the UAV is enhanced. Through the rapid extension and contraction of the return spring, the UAV can be quickly ejected for take-off, simplifying the take-off operation and reducing the difficulty of UAV operation. Compared with the traditional ground take-off method, the take-off platform can reduce the impact of the ground environment on the UAV take-off, so that the UAV can take off smoothly under various ground conditions.

[0016] In summary, the quadcopter UAV takeoff platform of the present invention realizes efficient and safe takeoff of the UAV through the design of the lifting mechanism and the return spring, while improving the flexibility and adaptability of takeoff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of a quad-rotor UAV take-off platform provided by the present invention; Figure 2 This is a rear cross-sectional structural diagram of a quad-rotor UAV takeoff platform provided by the present invention; Figure 3 It is a top view schematic diagram of the landing platform and the cushion provided by the present invention; Figure 4 This is an assembly diagram of the middle box, connecting frame and counterweight base provided by the present invention; Figure 5 This is an assembly diagram of a differential wheel, a second sprocket, and a second chain provided by the present invention; Figure 6 This is an assembly diagram of the connecting gear and rack provided by the present invention; Figure 7 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG; Figure 8 for Figure 2 Schematic diagram of the enlarged structure of part B shown in FIG; Figure 9 for Figure 1 Schematic diagram of the enlarged structure of part C shown in ; Figure 10 for Figure 1 Schematic diagram of the enlarged structure of part D shown in FIG.

[0018] Figure 1: Box; 2: Partition; 3: Take-off platform; 4: Threaded cylinder; 5: Return spring; 6: Threaded rod; 7: Rotating rod; 8: First bevel gear; 9: Motor; 10: First sprocket; 11: First chain; 12: Guide rod; 13: Net plate; 14: Limit plate; 15: Buffer sponge; 16: Landing platform; 17: Buffer pad; 18: Differential wheel; 19: Connecting rod; 20: Second sprocket; 21: Second chain; 22: Second bevel gear; 23: Anti- Protective cover; 24. Connecting block; 25. Fixed rod; 26. Connecting spring; 27. Inclined rod; 28. Roller; 29. ​​Bidirectional screw; 30. Slider; 31. Limit block; 32. Connecting gear; 33. Rack; 34. Transparent box; 35. Connecting rope; 36. Counterweight; 37. Level pointer; 38. Connecting frame; 39. Counterweight base; 40. Fixed cylinder; 41. Connecting cover; 42. Screw; 43. Third sprocket; 44. Third chain; 45. Third bevel gear. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the description of the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0020] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The embodiment of the present invention provides a four-rotor UAV takeoff platform, such as Figure 1-10 As shown, the quadcopter take-off platform includes: a box body 1 and a partition 2 fixedly installed in the box body 1, and a take-off platform 3 provided in the box body 1 for providing the drone with take-off; a threaded cylinder 4 slidably provided on the partition 2 for adjusting the height of the take-off platform 3; a return spring 5 fixedly installed on the partition 2 and the take-off platform 3 for assisting the drone in taking off; a driving mechanism provided in the box body 1 for driving the threaded cylinder 4 to slide up and down; and a connecting mechanism provided on the take-off platform 3 and the threaded cylinder 4 for connecting the threaded cylinder 4 and the take-off platform 3.

[0022] In this embodiment, when the drone is ready to take off, it is first placed on the take-off platform 3 in the box 1. At the same time, the drone is controlled to be in a pre-take-off state, and then the driving mechanism drives the threaded cylinder 4 to slide on the partition 2, thereby adjusting the height of the take-off platform 3. During this process, the return spring 5 is compressed and stores energy. When the take-off platform 3 drops to a certain preset height, the connecting mechanism disconnects the threaded cylinder 4 from the take-off platform 3. At this time, the return spring 5 releases the stored energy, quickly expands and contracts, and pushes the take-off platform 3 to rise rapidly, thereby ejecting the drone and assisting it in taking off; Through the lifting mechanism of the take-off platform 3, the UAV can take off at a relatively high position, avoiding damage to the wings by obstacles such as ground weeds, and improving the safety of take-off. At the same time, by adjusting the height of the threaded cylinder 4 to adapt to take-off requirements at different heights, the take-off flexibility of the UAV is enhanced. Through the rapid extension and contraction of the return spring 5, the UAV can be quickly ejected for take-off, simplifying the take-off operation and reducing the difficulty of UAV operation. Compared with the traditional ground take-off method, the take-off platform can reduce the impact of the ground environment on the UAV's take-off, so that the UAV can take off smoothly under various ground conditions.

[0023] In a further preferred embodiment of the present invention, the driving mechanism includes: a threaded rod 6 rotatably installed at the bottom of the inner wall of the box body 1, and the threaded rod 6 is threadedly connected to the threaded barrel 4; a rotating rod 7 rotatably installed at the bottom of the inner wall of the box body 1, and the rotating rod 7 and the threaded rod 6 are fixedly sleeved with a first bevel gear 8, and the two first bevel gears 8 are meshed with each other; a motor 9 fixedly installed at the bottom of the partition 2; a group of first sprockets 10 respectively installed on the rotating rod 7 and the output shaft of the motor 9; a first chain 11 sleeved on a group of the first sprockets 10, and the first chain 11 is meshed with a group of the first sprockets 10.

[0024] In this embodiment, to adjust the height of takeoff platform 3, motor 9 is first activated. The output shaft of motor 9 rotates, driving first sprocket 10 mounted thereon. Because first chain 11 meshes with a set of first sprockets 10, the first sprockets 10 on rotating rod 7 also rotate, in turn driving rotation of rotating rod 7. Both rotating rod 7 and threaded rod 6 are fixedly mounted with meshing first bevel gears 8, so rotation of rotating rod 7 drives rotation of threaded rod 6. The threaded rod 6 is threadedly connected to the threaded barrel 4, so when the threaded rod 6 rotates, the threaded barrel 4 will slide up and down along the partition 2. By adjusting the sliding position of the threaded barrel 4, the height of the take-off platform 3 can be accurately adjusted. When the take-off platform 3 drops to a preset height, the connecting mechanism disconnects the threaded barrel 4 from the take-off platform 3. At this time, the reset spring 5 releases energy, pushing the take-off platform 3 to rise quickly, ejecting the drone and completing the take-off process. Through the combination of motor 9, chain drive, bevel gear and threaded connection, the height of the take-off platform 3 can be accurately adjusted to meet the needs of different take-off heights. The height adjustment of the take-off platform 3 can be achieved by starting the motor 9. The operation is simple and quick, and the operation difficulty is reduced.

[0025] In a further preferred embodiment of the present invention, a guide rod 12 for guiding the take-off platform 3 is fixedly installed on the top of the partition 2, and the guide rod 12 slides through the return spring 5 and the take-off platform 3. A plurality of ventilation holes are opened on the box body 1, and mesh panels 13 are installed in the plurality of ventilation holes.

[0026] In this embodiment, when the drone needs to take off, takeoff platform 3 rises along guide rod 12, compressing return spring 5 during this process. After the drone takes off, if takeoff platform 3 is lowered by an external force, return spring 5 releases its stored energy, pushing takeoff platform 3 back to its initial position. The design of the vents and mesh 13 ensures air circulation within the box. The design of guide rod 12 and return spring 5 enables stable lifting and resetting of takeoff platform 3, improving the drone's takeoff efficiency. The vents and mesh 13 ensure air circulation within the box 1.

[0027] In a further preferred embodiment of the present invention, a limit plate 14 is fixedly installed on one side of the inner wall of the box body 1, and the limit plate 14 is located above the take-off platform 3 and is used to limit the rising height of the take-off platform 3. A buffer sponge 15 is fixedly installed on the bottom of the limit plate 14 to prevent the take-off platform 3 from collision.

[0028] In this embodiment, during the rising process of the take-off platform 3, when it reaches the preset height, it will be blocked by the limit plate 14. At this time, the buffer sponge 15 will play a key role. It can effectively absorb the impact force between the take-off platform 3 and the limit plate 14 to prevent the occurrence of hard collision. In this way, the limit plate 14 and the buffer sponge 15 jointly ensure the safety and stability of the take-off platform 3 during the lifting process. By setting the limit plate 14, the rising height of the take-off platform 3 is effectively limited to prevent it from rising excessively and causing safety problems. The design of the buffer sponge 15 reduces the hard collision between the take-off platform 3 and the limit plate 14, protects the device structure from damage, and reduces noise and vibration.

[0029] In a further preferred embodiment of the present invention, a group of landing platforms 16 are rotatably mounted on the top of the box body 1 , and a buffer pad 17 is mounted on each of the landing platforms 16 .

[0030] In this embodiment, during the take-off stage of the drone, a group of landing platforms 16 are opened outward to ensure that the drone has enough space to take off smoothly from the top of the box 1. After take-off is completed, the landing platform 16 is closed again to form a stable horizontal platform. When the drone needs to land, it can land safely on the landing platform 16, and the buffer pad 17 plays a role in protecting the drone. By setting up an openable and closable landing platform 16, a flexible and convenient operating space is provided for the take-off and landing of the drone. The design of the buffer pad 17 increases the safety and comfort of the drone during landing, and effectively reduces the risk of damage to the drone during landing. At the same time, the structure of the entire device is more complete and the functions are more comprehensive, which not only meets the take-off requirements of the drone, but also provides a reliable landing platform, thereby improving the overall practicality and market competitiveness of the device.

[0031] In a further preferred embodiment of the present invention, differential wheels 18 are installed on the rotating shafts of the box body 1 and the landing platform, and the two differential wheels 18 are meshed with each other. A connecting rod 19 is rotatably installed in the box body 1, and a second sprocket 20 is fixedly installed on the connecting rod 19 and the differential wheel 18 located on one side of the box body. A second chain 21 is sleeved on the two second sprockets 20, and a second bevel gear 22 is fixedly sleeved on the other end of the connecting rod 19 and the rotating rod 7, and the two second bevel gears 22 are meshed with each other.

[0032] In this embodiment, when the take-off platform 3 needs to descend to assist the drone in taking off, the drive mechanism drives the rotating rod 7 to rotate. The rotation of the rotating rod 7 is transmitted to the connecting rod 19 via the second bevel gear 22, causing the connecting rod 19 to also rotate. The rotation of the connecting rod 19 is then transmitted to the differential wheel 18 via the second sprocket 20 and the second chain 21. Due to the design of the differential wheel 18, it can allow the landing platform to rotate at different speeds or directions under specific conditions. In this embodiment, the differential wheel 18 and the chain drive system of the connecting rod 19 work together to enable the landing platform 16 to open simultaneously with the rotation of the rotating rod 7 and the take-off platform 3 to descend simultaneously. Through the ingenious design of components such as the differential wheel 18, the connecting rod 19, the second sprocket 20 and the second chain 21, the descent of the take-off platform 3 and the opening of the landing platform are synchronized, thereby improving the automation level and ease of operation of the device. The design of the second bevel gear 22 allows power to be transmitted between rotating components on different axes, achieving effective linkage between the rotating rod 7 and the connecting rod 19, and providing reliable protection for the synchronous movement of the entire device.

[0033] In a further preferred embodiment of the present invention, a protective cover 23 is fixedly installed on one side of the box body 1, and the protective cover 23 is provided on the two second sprockets 20, and the top of the protective cover 23 is provided in an open shape.

[0034] In this embodiment, the design of the protective cover 23 can effectively prevent external debris (such as dust, debris, etc.) from entering the chain drive system, avoiding problems such as chain jamming, wear or damage. At the same time, the protective cover 23 can also reduce the noise and vibration generated by the chain drive system during operation, thereby improving the overall stability and service life of the device.

[0035] In a further preferred embodiment of the present invention, the connecting mechanism includes: a connecting block 24 fixedly installed at the bottom of the take-off platform 3; a fixing rod 25 slidably installed on the connecting block 24 for fixing the threaded barrel 4, one end of the fixing rod 25 is engaged with the card groove of the threaded barrel 4; a connecting spring 26 sleeved on the fixing rod 25, and the two ends of the connecting spring 26 are respectively fixedly connected to the baffle of the fixing rod 25 and the connecting block 24.

[0036] In this embodiment, when the take-off platform 3 descends to a certain height, the fixing rod 25 will penetrate the inclined rod 27 on the top of the partition 2. At this time, the inner wall of the notch of the fixing rod 25 is in close contact with the side of the inclined rod 27 and moves to one side according to the inclination of the inclined rod 27. As the fixing rod 25 moves, it gradually moves away from the slot of the threaded cylinder 4. When the fixing rod 25 is completely out of the slot, the connecting spring 26 releases the elastic force and quickly pushes the take-off platform 3 out to a certain height, thereby assisting the drone to take off. Through the design of the connecting mechanism, the automatic lifting and assisted take-off functions of the take-off platform 3 are realized without manual intervention, which improves the degree of automation of the device. The design of the fixing rod 25 being connected to the slot of the threaded cylinder 4 ensures the stability of the take-off platform 3 during the lifting process and avoids safety hazards caused by shaking or falling off.

[0037] In a further preferred embodiment of the present invention, an inclined rod 27 is fixedly installed on the top of the partition 2, and a notch is opened on the fixed rod 25, and a roller 28 is rotatably installed in the notch.

[0038] In this embodiment, the inclination angle and length of the inclined rod 27 can be adjusted according to actual needs to ensure that the fixed rod 25 can slide along it smoothly and steadily. The design of the roller 28 can reduce the friction resistance between the fixed rod 25 and the inclined rod 27, so that the fixed rod 25 can slide more easily along the inclined rod 27. At the same time, the roller 28 can also protect the inclined rod 27 from wear and tear, thereby extending its service life.

[0039] In a further preferred embodiment of the present invention, the threaded barrel 4 is rectangular to prevent the threaded barrel 4 from slipping on the partition 2, and the side edges of the threaded barrel 4 and the bottom edge of the fixing rod 25 are both arc-shaped.

[0040] In this embodiment, the rectangular shape of the threaded barrel 4 provides a larger contact area and a more stable support structure, thereby better resisting lateral forces and ensuring stable sliding and positioning of the threaded barrel 4 on the partition 2. The side edges of the threaded barrel 4 and the bottom edge of the fixing rod 25 are both designed to be curved. This curved design facilitates the locking of the fixing rod 25 into the slot, making the contact between the threaded barrel 4 and the fixing rod 25 smoother.

[0041] In order to further improve the use effect of this device, in addition to the above scheme, this scheme also has the following embodiments: In another embodiment of the present invention, the take-off platform 3 is provided with an adjustment mechanism for adjusting the position of the UAV on the take-off platform 3, and the adjustment mechanism includes: a group of slide grooves opened on the top of the take-off platform 3; a bidirectional screw 29 rotatably installed in a group of the slide grooves; a group of sliders 30 each bolted on the bidirectional screw 29 for adjusting the position of the UAV, and a limit block 31 fixedly installed on a group of the sliders 30.

[0042] In this embodiment, when the take-off platform 3 descends to a certain height, the connecting gear and the rack 33 engage to drive the bidirectional screw 29 to rotate. As the bidirectional screw 29 rotates, the two sliders 30 mounted thereon will slide relative to each other. This sliding adjustment enables the drone to gradually move to the center position of the take-off platform 3, facilitating the subsequent take-off of the drone. Through the meshing of the connecting gear 32 and the rack 33, the descent of the take-off platform 3 and the position adjustment of the drone are linked, thereby improving the degree of automation and efficiency of the device. Through the design of the bidirectional screw 29 and the slider 30, the position adjustment of the drone is more precise and stable, ensuring that the drone can be accurately located at the center position of the take-off platform. The design of the limit block 31 increases the safety of the drone and avoids take-off failures or accidents caused by improper drone positioning.

[0043] In another embodiment of the present invention, a connection port is provided on the take-off platform 3, and the bidirectional screw 29 passes through the connection port. A connecting gear 32 is fixedly sleeved on the bidirectional screw 29, and a rack 33 is fixedly installed on the top of the partition 2, and the rack 33 is fixedly connected to the connecting gear 32.

[0044] In this embodiment, when the take-off platform 3 is lowered by the driving mechanism, the connecting gear 32 rotates along the rack 33 on the top of the partition 2. Since the connecting gear 32 and the bidirectional screw 29 are fixedly mounted, the rotation of the connecting gear 32 will drive the bidirectional screw 29 to rotate synchronously. As the bidirectional screw 29 rotates, the slider 30 mounted thereon will slide relatively, thereby adjusting the position of the drone. Through the design of the connecting port, bidirectional screw 29, connecting gear 32 and rack 33, the descent of the take-off platform 3 and the adjustment of the drone position are linked, and the entire structure is compact and reasonable, which improves the overall performance and efficiency of the device. The meshing transmission mode of the connecting gear 32 and the rack 33 is stable and reliable, which can ensure the smooth rotation of the bidirectional screw 29 and the accurate sliding of the slider 30.

[0045] In another embodiment of the present invention, a horizontal measuring mechanism is installed on one side of the box body 1, and the horizontal measuring mechanism includes: a transparent box 34 fixedly installed on one side of the box body 1; a connecting rope 35 installed on the top of the inner wall of the transparent box 34, and a counterweight block 36 is installed at the bottom end of the connecting rope 35; a group of horizontal pointers 37 respectively installed at the bottom of the counterweight block 36 and the bottom of the inner wall of the transparent box 34, and the group of horizontal pointers 37 are arranged opposite to each other.

[0046] In this embodiment, when the box 1 is placed on an uneven ground, the box 1 may tilt due to the unevenness of the ground. At this time, the counterweight 36 will be suspended along the connecting rope 35 under the action of gravity and point to the direction of gravity. By observing the positional relationship between the two horizontal pointers 37, the inclination angle of the box 1 can be judged. If the two horizontal pointers 37 are not on the same horizontal line, it means that the box 1 is tilted; if the two horizontal pointers 37 are on the same horizontal line, it means that the box 1 has been adjusted to be stable. Through the design of the counterweight 36 and the horizontal pointer 37, the inclination angle of the box 1 can be accurately reflected, providing a reliable basis for adjusting the box 1. The design of the horizontal measuring mechanism makes the observation and measurement process simple and quick, without the need for complicated operations or equipment. By accurately measuring and adjusting the inclination angle of the box 1, the stability and safety of the box 1 during takeoff and landing can be ensured, avoiding the risk of accidents caused by the tilt of the box 1.

[0047] In another embodiment of the present invention, a group of connecting frames 38 are fixedly installed on one side of the box body 1, and a counterweight base 39 is slidably installed in each of the connecting frames 38. A fixing cylinder 40 for fixing the counterweight base 39 is slidably provided on one side of the connecting frame 38. A connecting cover 41 is fixedly installed on one side of the connecting frame 38, and a screw rod 42 is rotatably installed in each of the connecting cover 41. A group of the screw rods are threadedly connected to a group of the fixed cylinders 40. A third sprocket 43 is rotatably installed on one side of a group of the connecting frames 38. A third chain is sleeved on a group of the third sprockets 43. A third bevel gear 45 is fixedly sleeved on the rotating shaft and the screw rod 42 of a group of the third sprockets 43, and a handle is installed at one end of any of the screw rods 42.

[0048] In this embodiment, before placing the box body 1 on an uneven ground, first move the fixing cylinder 40 away from the counterweight base 39 to ensure that the counterweight base 39 can slide freely on the connecting frame 38. Then, hold the handle on the box body 1, suspend the box body 1 in the air and close to the ground, while the counterweight base 39 contacts the ground. According to the instruction of the level measuring mechanism, adjust the position of the box body 1 so that it is horizontal. At this time, the counterweight base 39 is close to the ground. Then, turn the handle on the screw rod 42 to rotate the screw rod 42. The rotation of the screw rod 42 will drive the fixing cylinder 40 to slide to one side, and through The chain transmission of the third bevel gear 45 and the third sprocket 43 is transmitted to another screw rod to realize the synchronous rotation of a group of screw rods 42. Finally, a group of fixing cylinders 40 will synchronously clamp the counterweight base 39 to fix it. The sliding design of the counterweight base 39 in the connecting frame 38 allows the balance of the box 1 to be flexibly adjusted to adapt to the unevenness of different ground surfaces. The design of the fixing cylinder 40 ensures that the counterweight base 39 is firmly fixed after being adjusted into place, thereby avoiding tilting or instability of the box 1 caused by the movement of the counterweight base 39.

[0049] In summary, compared with related technologies, this take-off platform achieves efficient and safe take-off of UAVs through the design of the lifting mechanism and return spring, while improving the flexibility and adaptability of take-off.

[0050] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A four-rotor drone takeoff platform, characterized in that: include: A box (1), a partition (2) fixedly mounted in the box (1), and a take-off platform (3) provided in the box (1) for providing a take-off for a drone; A threaded cylinder (4) slidably mounted on the partition (2) for adjusting the height of the take-off platform (3); A return spring (5) fixedly mounted on the partition (2) and the take-off platform (3) for assisting the drone in taking off; A driving mechanism provided in the box (1) for driving the threaded cylinder (4) to slide up and down; A connecting mechanism is provided on the take-off platform (3) and the threaded barrel (4) and is used to connect the threaded barrel (4) and the take-off platform (3).

2. The quadrotor drone takeoff platform according to claim 1, wherein: The driving mechanism comprises: A threaded rod (6) is rotatably mounted on the bottom of the inner wall of the box (1), wherein the threaded rod (6) is threadably connected to the threaded barrel (4); A rotating rod (7) is rotatably mounted on the bottom of the inner wall of the box body (1), and a first bevel gear (8) is fixedly sleeved on both the rotating rod (7) and the threaded rod (6), and the two first bevel gears (8) are meshed with each other; A motor (9) fixedly mounted on the bottom of the partition (2); a set of first sprockets (10) respectively mounted on the rotating rod (7) and the output shaft of the motor (9); A first chain (11) is sleeved on a group of the first sprockets (10), and the first chain (11) is meshed with the group of the first sprockets (10).

3. The quadrotor drone takeoff platform according to claim 2, wherein: A guide rod (12) for guiding the take-off platform (3) is fixedly installed on the top of the partition (2), and the guide rod (12) slides through the return spring (5) and the take-off platform (3). A plurality of ventilation holes are opened on the box body (1), and mesh plates (13) are installed in the plurality of ventilation holes.

4. The quad-rotor UAV takeoff platform according to claim 1, characterized in that: A limit plate (14) is fixedly mounted on one side of the inner wall of the box (1), and the limit plate (14) is located above the take-off platform (3) and is used to limit the rising height of the take-off platform (3). A buffer sponge (15) is fixedly mounted on the bottom of the limit plate (14) to prevent the take-off platform (3) from collision.

5. The quad-rotor UAV takeoff platform according to claim 2, characterized in that: A group of landing platforms (16) are rotatably mounted on the top of the box body (1), and a buffer pad (17) is mounted on each of the landing platforms (16).

6. The quad-rotor UAV takeoff platform according to claim 5, characterized in that: Differential wheels (18) are installed on the rotating shafts of the box body (1) and the landing platform (16), and the two differential wheels (18) are meshed with each other. A connecting rod (19) is rotatably installed in the box body (1), and a second sprocket (20) is fixedly installed on the connecting rod (19) and the differential wheel (18) located on one side of the box body (1). A second chain (21) is sleeved on the two second sprockets (20). The other end of the connecting rod (19) and the rotating rod (7) are fixedly sleeved with a second bevel gear (22), and the two second bevel gears (22) are meshed with each other.

7. The quad-rotor UAV takeoff platform according to claim 6, characterized in that: A protective cover (23) is fixedly mounted on one side of the box body (1), the protective cover (23) is provided on the two second sprockets (20), and the top of the protective cover (23) is provided in an open shape.

8. The quad-rotor UAV takeoff platform according to claim 1, wherein: The connecting mechanism comprises: A connecting block (24) fixedly mounted on the bottom of the take-off platform (3); A fixing rod (25) is slidably mounted on the connecting block (24) for fixing the threaded barrel (4), one end of the fixing rod (25) being engaged with a slot of the threaded barrel (4); A connecting spring (26) is sleeved on the fixing rod (25), and two ends of the connecting spring (26) are respectively fixedly connected to the blocking piece and the connecting block (24) of the fixing rod (25).

9. The quad-rotor UAV takeoff platform according to claim 8, characterized in that: An inclined rod (27) is fixedly mounted on the top of the partition (2), a notch is formed on the fixed rod (25), and a roller (28) is rotatably mounted in the notch.

10. The quad-rotor UAV takeoff platform according to claim 8, characterized in that: The threaded barrel (4) is arranged in a rectangular shape to prevent the threaded barrel (4) from slipping on the partition (2), and the side edges of the threaded barrel (4) and the bottom edge of the fixing rod (5) are both arranged in an arc shape.

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