Heavy-load unmanned aerial vehicle

Abstract

The utility model provides a heavy-load unmanned aerial vehicle, which belongs to the technical field of unmanned aerial vehicles, and comprises a rack, a lithium battery mounted in the rack, a loading and unloading structure, a bottom end arranged on one side of a battery cabin cover plate, a foot stool mounted at the bottom end of the rack, and trundles fixed at the bottom end of the foot stool, the folding structure comprises an up-and-down overturning base which is fixedly connected to the two sides of the rack in a rotating mode, a positioning block fixed to one side of the front-and-back overturning base and locking assemblies arranged on the two sides of the rack. According to the foldable unmanned aerial vehicle, the fixing pin is pulled to leave the first pin hole or the second pin hole, the vertical overturning base and the front-back overturning base drive the vehicle arms to rotate to the two sides of the rack, the clamping rings are used for supporting and fixing the stored vehicle arms, and therefore the foldable storage function of the foldable unmanned aerial vehicle is achieved, and the size of the folded unmanned aerial vehicle is greatly reduced; and meanwhile, the arms of the unmanned aerial vehicle can be protected against collision and damage in the transportation process, and the service life of the unmanned aerial vehicle is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a large-payload UAV. Background Technology

[0002] Heavy-load drones possess powerful payload capacity and stable flight performance, and are widely used in logistics transportation, agricultural plant protection, environmental monitoring and other fields. They can efficiently complete tasks such as transporting large quantities of materials, accurately spraying pesticides, and hoisting heavy equipment, significantly improving operational efficiency, reducing labor costs, and playing an important role in complex environments.

[0003] A Chinese patent with publication number CN221024187U discloses a large-payload unmanned aerial vehicle (UAV), including the UAV itself and a protective device. This invention, by setting up a large-payload UAV, a fuselage, and a support structure, allows the UAV to be used for aerial cargo transport. The protective device protects the cargo. Multiple locking components allow the clamping plate to hold and secure the cargo inside the container. Four shock-absorbing components dampen the UAV upon landing, protecting both the UAV's structure and the cargo. This achieves the effect of clamping and securing cargo of different sizes and damping upon landing, solving the problems of inability to quickly secure cargo, lack of shock absorption upon landing, and the vulnerability of the UAV's structure and cargo to vibration damage.

[0004] The aforementioned patent still has the following shortcomings: it is not convenient to store and fold. As existing drones are increasing in size to increase payload, they not only occupy a lot of space during transportation but also have high transportation costs. Furthermore, they are difficult to deploy flexibly in complex terrain or urban environments, which limits the expansion of their application scenarios. Utility Model Content

[0005] This invention provides a heavy-load unmanned aerial vehicle (UAV) that solves the problems mentioned in the background section.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a large payload unmanned aerial vehicle (UAV), including a frame, and further comprising:

[0008] A lithium battery is installed inside the frame, and a battery compartment cover that is rotatably connected to the frame is provided on the top of the lithium battery.

[0009] The flight controller is installed inside the frame;

[0010] The loading and unloading structure is located at the bottom of one side of the battery compartment cover, which is used to quickly open the battery compartment cover to replace the lithium battery.

[0011] A tripod is mounted at the bottom of the frame, and casters are fixed at the bottom of the tripod.

[0012] Radio antennas are mounted on both sides of the bottom of the rack, and RTK dual-directional modules are mounted on both sides of the top of the rack;

[0013] A folding structure is provided on both sides of the frame. The folding structure includes an upper and lower flip base fixed to the upper and lower flip bases rotatably connected to the two sides of the frame, a front and rear flip base rotatably connected to the bottom ends of the upper and lower flip bases, a self-locking component provided on the top side of the upper and lower flip bases and the top side of the front and rear flip bases respectively, a tight-fitting step fixed to both ends of one side of the frame, a positioning groove opened inside the upper and lower flip bases, a positioning block fixed to one side of the front and rear flip bases, and a locking component provided on both sides of the frame.

[0014] The arm is fixed to one side of the front and rear tilting seat, and an electric controller is installed on one side of the top of the arm. A drive motor is installed on one side of the arm, and a blade is installed at the end of the rotating shaft of the drive motor.

[0015] The hoisting hooks are installed on both sides of the bottom end of the frame.

[0016] The above technical solution provides the necessary power for flight through a lithium battery device. The loading and unloading structure uses a quick-opening battery compartment cover to replace the lithium battery. The drive motor drives the propellers to generate lift, while the flight controller controls the flight attitude. The folding structure enables the arms to be folded and stored.

[0017] Furthermore, the self-locking assembly includes a connecting seat fixed to one side of the top of the upper and lower flip seat and the top of one side of the front and rear flip seat respectively, a sleeve threaded inside the top of the connecting seat, a moving groove opened inside the top of the sleeve, a fixing pin slidably connected inside the sleeve, a limiting rod fixed to both sides of the top of the fixing pin, a push plate fixed to the outside of the fixing pin, a compression spring installed on the top of the push plate and connected to the sleeve, a second pin hole opened on one side of the upper and lower flip seat, and a first pin hole opened on both sides of the top of the frame. The locking assembly includes a mounting seat fixed to both sides of the frame, a retaining ring rotatably connected to the bottom of one side of the mounting seat, a connecting bolt rotatably connected to the top of one side of the mounting seat, and a hand-tightening sleeve threaded to the outside of the connecting bolt.

[0018] Through the above technical solution, by pulling the fixing pin away from the first pin hole or the second pin hole, the upper and lower flip seats and the front and rear flip seats drive the machine arm to rotate to both sides of the frame, and the retaining ring is used to support and fix the storage machine arm.

[0019] Furthermore, the positioning block and the positioning groove form a plug-in structure, the top of the retaining ring has a hole groove that matches the connecting bolt, and the top of the up-and-down flip seat is equipped with a carrying handle.

[0020] Through the above technical solution, the positioning block can be quickly aligned with the position of the machine arm by inserting it into the positioning slot, eliminating misalignment and ensuring that the folding parts are tightly joined. The retaining ring is fixed by the connecting bolts, which enhances the stability of the machine arm in the folded state.

[0021] Furthermore, when the limiting rod leaves the interior of the moving groove, the positioning groove is in a compressed state, and the fixing pin is retracted into the interior of the connecting seat.

[0022] The above technical solution enables the arm to rotate smoothly during folding, avoiding interference. At the same time, when unfolding and locking, the limit rod re-engages into the moving slot and the fixing pin extends, ensuring that the arm is securely locked.

[0023] Furthermore, the loading and unloading structure includes a guide sleeve fixed to the bottom end of the battery compartment cover, a moving rod slidably connected inside the guide sleeve, a pull rod fixed to the top end of the moving rod, a positioning pin installed on one side of the moving rod, a positioning seat sleeved on the outside of the positioning pin and connected to the frame, a connecting plate sleeved on the outside of the moving rod, and a return spring fixed on one side of the connecting plate and connected to the guide sleeve.

[0024] The above technical solution allows the battery compartment cover to open upwards by pulling the lever, which causes the moving rod to disengage the positioning pin from the positioning seat.

[0025] Furthermore, the movable rod forms a telescopic structure with the guide sleeve via a return spring, and the pull rod extends through the battery compartment cover to the inside of the guide sleeve and connects with the movable rod.

[0026] The above technical solution enables the pull rod to compress the return spring, unlocking the battery compartment cover; when the pull rod is released, the return spring pushes the move rod back to its original position, automatically locking the cover.

[0027] The above-described solution of this utility model has at least the following beneficial effects:

[0028] 1. This utility model, by pulling the fixing pin away from the first pin hole or the second pin hole, causes the upper and lower flip seats and the front and rear flip seats to rotate the drone arm to both sides of the frame. The snap ring is used to support and fix the stored drone arm, thereby realizing the folding and storage function of this device. The size of the folded drone is greatly reduced, making it easier to carry and transport. At the same time, it helps to protect the drone arm from collisions and damage during transportation and extend its service life.

[0029] 2. This utility model allows the battery compartment cover to be opened upwards by pulling the lever, which causes the moving rod to disengage the positioning pin from the positioning seat. This enables the device to be easily replaced, allowing users to replace the lithium battery in a short time, reducing downtime, extending flight operation time, and ensuring mission continuity. Attached Figure Description

[0030] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0031] Figure 2 This is the second schematic diagram of the structure of this utility model;

[0032] Figure 3 This is the third schematic diagram of the structure of this utility model;

[0033] Figure 4 Provided by this utility model Figure 1 Enlarged cross-sectional view of a portion of point A in the middle section;

[0034] Figure 5 Provided by this utility model Figure 3 Enlarged cross-sectional view of section B in the middle section;

[0035] Figure 6 A three-dimensional structural diagram of the locking component provided by this utility model;

[0036] Figure 7 A three-dimensional cross-sectional structural diagram of the self-locking component provided by this utility model;

[0037] Figure 8 A three-dimensional cross-sectional structural diagram of the loading and unloading structure provided by this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Frame; 2. Battery compartment cover; 3. Arm; 4. Electronic controller; 5. Propeller; 6. Folding structure; 601. Upward and downward tilting base; 602. Front and rear tilting base; 603. Sleeve; 604. Handle; 605. Positioning block; 606. Positioning groove; 607. First pin hole; 608. Second pin hole; 609. Mounting base; 610. Snap ring; 611. Connecting bolt; 612. Hand-tightening nut; 613. Moving groove; 614. Limiting rod; 615. Fixing 616. Positioning pin; 617. Compression spring; 618. Push plate; 619. Connecting seat; 610. Fitting step; 7. Loading and unloading structure; 701. Connecting plate; 702. Return spring; 703. Pull rod; 704. Moving rod; 705. Guide sleeve; 706. Positioning pin; 707. Positioning seat; 8. Casters; 9. Lifting hook; 10. Frame; 11. Radio antenna; 12. RTK dual-directional module; 13. Drive motor; 14. Flight controller; 15. Lithium battery. Detailed Implementation

[0040] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0041] like Figures 1 to 8 As shown, an embodiment of this utility model provides a large-payload unmanned aerial vehicle (UAV), including a frame 1, and further comprising:

[0042] A lithium battery 15 is installed inside the frame 1, and a battery compartment cover 2 that is rotatably connected to the frame 1 is provided on the top of the lithium battery 15.

[0043] Flight controller 14 is installed inside frame 1;

[0044] The loading and unloading structure 7 is located at the bottom of one side of the battery compartment cover 2, and is used to quickly open the battery compartment cover 2 to replace the lithium battery 15.

[0045] The stand 10 is installed at the bottom of the frame 1, and the bottom of the stand 10 is fixed with casters 8;

[0046] Radio antennas 11 are installed on both sides of the bottom end of the rack 1, and RTK dual directional modules 12 are installed on both sides of the top end of the rack 1.

[0047] Folding structure 6 is provided on both sides of frame 1. Folding structure 6 includes an upper and lower flip base 601 fixed to the upper and lower flip base 601 rotatably connected to the two sides of frame 1, a front and rear flip base 602 rotatably connected to the bottom ends of the upper and lower flip base 601, a self-locking component provided on the top side of the upper and lower flip base 601 and the top side of the front and rear flip base 602 respectively, a tight-fitting step 619 fixed to both ends of one side of frame 1, a positioning groove 606 opened inside the upper and lower flip base 601, a positioning block 605 fixed on one side of the front and rear flip base 602, and a locking component provided on both sides of frame 1.

[0048] The arm 3 is fixed on one side of the front and rear tilting seat 602, and an electric controller 4 is installed on one side of the top of the arm 3. A drive motor 13 is installed on one side of the arm 3, and a blade 5 is installed at the end of the rotating shaft of the drive motor 13.

[0049] The hoisting hooks 9 are installed on both sides of the bottom end of the frame 1.

[0050] In this embodiment of the utility model, the lithium battery 15 device provides the necessary power for flight, the RTK dual-directional module 12 improves the positioning accuracy by correcting the UAV's GPS data through dual-directional differential correction, the radio antenna 11 is responsible for communication with the ground, the loading and unloading structure 7 is used to quickly open the battery compartment cover 2 to replace the lithium battery 15, the hoisting hook 9 connects to the fuselage frame to bear the hoisting load, the drive motor 13 drives the propeller 5 to generate lift, the flight controller 14 comprehensively processes sensor data and controls the flight attitude, and the ESC 4 adjusts the speed of the drive motor 13. The folding structure 6 realizes the folding and storage of the arm 3.

[0051] like Figures 4 to 7 As shown, the self-locking assembly includes a connecting seat 618 fixed to one side of the top of the upper and lower flip seat 601 and the top of one side of the front and rear flip seat 602, a sleeve 603 threadedly connected to the inside of the top of the connecting seat 618, a moving groove 613 opened inside the top of the sleeve 603, a fixing pin 615 slidably connected inside the sleeve 603, a limiting rod 614 fixed to both sides of the top of the fixing pin 615, a push plate 617 fixed to the outside of the fixing pin 615, a compression spring 616 installed on the top of the push plate 617 and connected to the sleeve 603, a second pin hole 608 opened on one side of the upper and lower flip seat 601, and a first pin hole 60 on both sides of the top of the frame 1. 7. The locking assembly includes mounting bases 609 fixed on both sides of the frame 1, a retaining ring 610 rotatably connected to the bottom of one side of the mounting base 609, a connecting bolt 611 rotatably connected to the top of one side of the mounting base 609, and a hand-tightening sleeve 612 threadedly connected to the outside of the connecting bolt 611. The positioning block 605 and the positioning groove 606 form a plug-in structure. The top of the retaining ring 610 has a hole groove that matches the connecting bolt 611. The top of the up-and-down flipping seat 601 is equipped with a carrying handle 604. When the limiting rod 614 leaves the inside of the moving groove 613, the positioning groove 606 is in a compressed state, and the fixing pin 615 is retracted into the inside of the connecting seat 618.

[0052] In this embodiment of the invention, the fixing pins 615, under the action of the compression spring 616, are inserted into the first pin hole 607 or the second pin hole 608 to lock the positions of the up-and-down flipping seat 601 and the front-and-back flipping seat 602. Simultaneously, the positioning block 605 is inserted into the positioning groove 606, and the tight-fitting step 619 supports the inner wall of the up-and-down flipping seat 601, eliminating any play between parts and preventing structural loosening due to vibration or impact. By pulling out the fixing pins 615 on both sides of the top of the up-and-down flipping seat 601, causing them to leave the interior of the first pin hole 607, the up-and-down flipping seat 601 is pulled downwards. Flip the blade 5 from a horizontal to a vertical position, pull out the fixing pins 615 on both sides of the front and rear flipping seat 602 so that they are removed from the inside of the second pin hole 608, and then push the front and rear flipping seat 602 to rotate around the upper and lower flipping seat 601 so that the arm 3 is close to both sides of the frame 1 and moves into the inside of the mounting seat 609. By putting the retaining ring 610 on the outside of the frame 1, use the connecting bolt 611 and the hand-tightening sleeve 612 to install the arm 3 between the retaining ring 610 and the mounting seat 609 to support and fix the stored arm 3 and ensure the structure is stable.

[0053] like Figure 8 As shown, the loading and unloading structure 7 includes a guide sleeve 705 fixed to the bottom of the battery compartment cover 2, a moving rod 704 slidably connected inside the guide sleeve 705, a pull rod 703 fixed to the top of the moving rod 704, a positioning pin 706 installed on one side of the moving rod 704, a positioning seat 707 sleeved on the outside of the positioning pin 706 and connected to the frame 1, a connecting plate 701 sleeved on the outside of the moving rod 704, and a return spring 702 fixed on one side of the connecting plate 701 and connected to the guide sleeve 705. The moving rod 704 forms a telescopic structure with the guide sleeve 705 through the return spring 702. The pull rod 703 extends through the battery compartment cover 2 to the inside of the guide sleeve 705 and connects with the moving rod 704.

[0054] In this embodiment of the utility model, by pulling the pull rod 703, the moving rod 704 is slid, causing the positioning pin 706 to disengage from the positioning seat 707, allowing the battery compartment cover 2 to open upward. When the battery compartment cover 2 is closed, by releasing the pull rod 703, the return spring 702 pushes the moving rod 704 to reset. Then, the positioning pin 706 is reinserted into the positioning seat 707 to lock the battery compartment cover 2, and the guide sleeve 705 restricts the sliding direction of the moving rod 704.

[0055] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A heavy-duty unmanned aerial vehicle (UAV), comprising a frame (1), characterized in that, Also includes: A lithium battery (15) is installed inside the frame (1), and a battery compartment cover (2) that is rotatably connected to the frame (1) is provided on the top of the lithium battery (15); Flight controller (14), installed inside the frame (1); The loading and unloading structure (7) is located at the bottom of one side of the battery compartment cover (2) and is used to quickly open the battery compartment cover (2) to replace the lithium battery (15). A stand (10) is installed at the bottom end of the frame (1), and a caster (8) is fixed at the bottom end of the stand (10); Radio antennas (11) are installed on both sides of the bottom end of the rack (1), and RTK dual directional modules (12) are installed on both sides of the top end of the rack (1). Folding structure (6) is provided on both sides of frame (1). The folding structure (6) includes an upper and lower flip seat (601) fixed to the upper and lower flip seats (601) rotatably connected to the two sides of frame (1), a front and rear flip seat (602) rotatably connected to the bottom of the upper and lower flip seats (601), a self-locking component provided on the top side of the upper and lower flip seats (601) and the top side of the front and rear flip seats (602), a tight-fitting step (619) fixed on both sides of frame (1), a positioning groove (606) opened inside the upper and lower flip seats (601), a positioning block (605) fixed on the side of the front and rear flip seats (602), and a locking component provided on both sides of frame (1). The arm (3) is fixed on one side of the front and rear tilting seat (602), and an electric controller (4) is installed on one side of the top of the arm (3). A drive motor (13) is installed on one side of the arm (3), and a blade (5) is installed at the end of the rotating shaft of the drive motor (13). The hoisting hooks (9) are installed on both sides of the bottom end of the frame (1).

2. The heavy-load unmanned aerial vehicle according to claim 1, characterized in that, The self-locking assembly includes a connecting seat (618) fixed to one side of the top of the upper and lower flip seat (601) and the top of one side of the front and rear flip seat (602), a sleeve (603) threaded inside the top of the connecting seat (618), a moving groove (613) opened inside the top of the sleeve (603), a fixing pin (615) slidably connected inside the sleeve (603), limiting rods (614) fixed on both sides of the top of the fixing pin (615), a push plate (617) fixed on the outside of the fixing pin (615), and a device mounted on the top of the push plate (617). The locking assembly includes a compression spring (616) connected to the sleeve (603), a second pin hole (608) opened on one side of the upper and lower flip seat (601), and a first pin hole (607) opened on both sides of the top of the frame (1). The locking assembly includes a mounting seat (609) fixed on both sides of the frame (1), a retaining ring (610) rotatably connected to the bottom end of one side of the mounting seat (609), a connecting bolt (611) rotatably connected to the top end of one side of the mounting seat (609), and a hand-tightening sleeve (612) threaded to the outside of the connecting bolt (611).

3. A heavy-load unmanned aerial vehicle according to claim 2, characterized in that, The positioning block (605) and the positioning groove (606) form a plug-in structure. The top of the retaining ring (610) has a hole and groove that matches the connecting bolt (611). The top of the up-and-down flip seat (601) is equipped with a carrying handle (604).

4. A heavy-load unmanned aerial vehicle according to claim 2, characterized in that, When the limiting rod (614) leaves the interior of the moving groove (613), the positioning groove (606) is in a compressed state, and the fixing pin (615) is retracted into the interior of the connecting seat (618).

5. A heavy-load unmanned aerial vehicle according to claim 1, characterized in that, The loading and unloading structure (7) includes a guide sleeve (705) fixed to the bottom of the battery compartment cover (2), a moving rod (704) slidably connected inside the guide sleeve (705), a pull rod (703) fixed to the top of the moving rod (704), a positioning pin (706) installed on one side of the moving rod (704), a positioning seat (707) sleeved on the outside of the positioning pin (706) and connected to the frame (1), a connecting plate (701) sleeved on the outside of the moving rod (704), and a return spring (702) fixed on one side of the connecting plate (701) and connected to the guide sleeve (705).

6. A heavy-load unmanned aerial vehicle according to claim 5, characterized in that, The movable rod (704) forms a telescopic structure with the guide sleeve (705) through the return spring (702), and the pull rod (703) extends through the battery compartment cover (2) to the inside of the guide sleeve (705) and connects with the movable rod (704).

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