A hoisting device for heavy-load unmanned aerial vehicles

Abstract

The utility model relates to a kind of hoisting device for big load unmanned aerial vehicle, including lifting hook, sling assembly, connecting unloading buckle, frame bar, connecting joint, center lifting column and unhooker. Lifting hook is used to link hoisting power source, sling assembly transmits tension, connecting unloading buckle realizes switching, frame bar constitutes support base, connecting joint guarantees structure connection stability, center lifting column transmits hoisting force, the unhooker includes rudder, and rudder can control the accurate trigger of unhooking action completed by unhooker, angle strength flexible adjustment, guarantee unhooking stability, reliable and repeatable accurate execution. The device structure is reasonable, and each component works cooperatively, applicable to big load unmanned aerial vehicle high-altitude hoisting, hoisting and other scenes, can improve the convenience and efficiency of operation, with good practical value.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) hoisting control technology, and more specifically, to a hoisting device for UAVs with large payloads. Background Technology

[0002] In drone lifting operations, especially in scenarios involving heavy loads, the cargo is prone to swaying during the lifting process due to changes in the drone's attitude and airflow disturbances. Swaying not only increases the difficulty of drone flight control but may also lead to safety hazards such as cargo falling and drone load imbalance. Therefore, the application of anti-sway devices is crucial.

[0003] Currently, conventional anti-sway devices mostly rely on simple mechanical structures to achieve anti-sway, such as dampers based on the principle of a pendulum or rigid frame constraints. However, they have significant shortcomings under heavy loads and complex working conditions. On the one hand, traditional mechanical anti-sway structures are difficult to accurately control the attitude of cargo. Faced with frequent attitude adjustments by UAVs, the anti-sway response is lagging and cannot effectively suppress sway. On the other hand, the unhooking process often uses purely mechanical triggering or simple electric control, resulting in low precision in the timing and force control of unhooking. When core control components such as servos fail, there is a lack of reliable backup solutions, which can easily lead to unhooking failures and cargo retention, seriously restricting the safety and efficiency of heavy-load UAV hoisting operations.

[0004] Furthermore, existing devices have shortcomings in component compatibility: poor compatibility between the hook and the drone lifting interface, leading to a risk of disengagement; insufficient wear resistance and tensile strength of the sling components, making them prone to breakage during long-term heavy-load lifting; and difficulty in balancing frame structural strength and lightweight design, affecting the drone's endurance and payload capacity. Therefore, there is an urgent need for a sway-eliminating device that integrates precise anti-swaying, intelligent disengagement control, and a highly reliable backup mechanism, and is adapted to the operational needs of heavy-load drones, to address the pain points of existing technologies and promote the development of drone lifting operations towards a safer and more efficient direction. Utility Model Content

[0005] To overcome the shortcomings of the existing hoisting devices for heavy-load drones in terms of poor anti-sway effect, this utility model provides a hoisting device for heavy-load drones.

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

[0007] The hoisting device for heavy-load UAVs includes: a sling assembly, a hoisting frame, a central hoisting column, and a release hook;

[0008] The hoisting frame is a pyramidal three-dimensional frame structure;

[0009] One end of the sling assembly is used to connect the drone, and the other end is connected to the top of the bottom surface of the hoisting frame;

[0010] The central lifting rod is set within the frame space of the hoisting frame, with its upper end connected to the cone top of the hoisting frame and its lower end connected to the unhooking device.

[0011] The unhooking device is used to hook and attach goods.

[0012] Preferably, the hoisting frame includes frame members and a central crossbar;

[0013] The frame members assemble the hoisting frame into a pyramidal three-dimensional shape;

[0014] The central crossbar is set at the top of the cone of the hoisting frame;

[0015] The upper end of the central hanging column is connected to the central crossbar.

[0016] Preferably, the hoisting frame further includes a connecting joint;

[0017] The connecting joint is located at the connection point of the frame member at the bottom apex of the hoisting frame.

[0018] The frame members at the bottom apex of the hoisting frame are connected by bolts or welding through the connecting joints, so that the hoisting frame forms a pyramidal three-dimensional frame structure.

[0019] Preferably, both ends of the central support column are provided with lifting rings;

[0020] The central lifting column is connected to the lifting frame by passing the upper lifting ring through the central crossbar;

[0021] The central lifting column is connected to the unhooking device via a lifting ring at its lower end.

[0022] Preferably, the hoisting frame is a four-sided pyramidal hoisting frame.

[0023] Preferably, the surface of the central hanging column is provided with a stress buffer structure.

[0024] Preferably, the sling assembly includes a sling, a sling, and a connecting shackle;

[0025] One end of the sling is connected to the sling buckle, and the other end is connected to the connecting shackle.

[0026] The hook is used to connect the drone;

[0027] The connecting shackle connects the sling to the bottom apex of the hoisting frame, realizing the transfer function.

[0028] Preferably, the hook is a gourd-shaped hook; the connection point between the hook and the sling is rectangular;

[0029] The connecting shackle is a gourd-shaped high-strength connecting shackle.

[0030] Preferably, the sling is made of steel wire rope or high-strength synthetic fiber rope, and is wrapped with an external wear-resistant protective layer.

[0031] Preferably, the unhooking device is equipped with a servo motor, which is used to control the unhooking device to unhook.

[0032] The unhooking device is also equipped with a manual unhooking mechanism.

[0033] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0034] (1) The hoisting frame adopts a pyramidal solid frame. In order to stabilize the geometric structure, combined with the force transmission and stress buffer of the central hanging column, it can effectively suppress the swing of goods during the hoisting of heavy-duty UAVs, reduce the difficulty of UAV flight control, reduce the safety hazards caused by swing, and improve the hoisting stability.

[0035] (2) From the hook to the frame members, each component is made of high-strength and lightweight materials, such as lightweight high-strength alloy pipes and high-strength shackles. While ensuring that the strength of the device can withstand heavy loads, the overall weight is reduced, which is suitable for the load and endurance requirements of heavy-duty UAVs and expands the application scenarios of UAV hoisting.

[0036] (3) By using the servo motor to control the unhooking device, the unhooking action can be precisely triggered and the angle and force can be flexibly adjusted to meet the unhooking needs of different goods and working conditions; the mechanical locking backup structure provides redundancy protection for servo motor failure, and the dual mechanism ensures the stability and reliability of the unhooking process, avoids problems such as cargo retention, and improves operational efficiency and safety.

[0037] (4) All components are connected and designed in a reasonable way to form an organic whole. The connection between the hook and the UAV, the force transmission of the sling assembly, the anti-sway of the frame rods, and the precise disengagement of the hook and the servo motor work together to achieve efficient and safe operation of heavy-load UAV hoisting, solve many pain points of existing technology, and promote the development of the industry. Attached Figure Description

[0038] Figure 1 This is a perspective view of a hoisting device for a heavy-load unmanned aerial vehicle as described in Example 1;

[0039] Figure 2 This is a front view of a hoisting device for a heavy-load UAV as described in Example 1;

[0040] Figure 3 This is a left view of a hoisting device for a heavy-load UAV as described in Example 1;

[0041] Figure 4 This is a top view of a hoisting device for a heavy-load UAV as described in Example 1;

[0042] Figure 5 This is a bottom view of a hoisting device for a heavy-load UAV as described in Example 1;

[0043] Attached diagram descriptions: 1-Sling assembly, 2-Lifting frame, 3-Central lifting column, 4-Unhooking device, 5-Steering motor, 11-Lifting buckle, 12-Sling, 13-Connecting shackle, 21-Frame member, 22-Central crossbar, 23-Connecting joint. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0045] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes. Example 1

[0046] This embodiment discloses a hoisting device for heavy-load unmanned aerial vehicles (UAVs), such as... Figure 1-5 As shown, the hoisting anti-sway device includes: sling assembly 1, hoisting frame 2, central hoisting column 3, and unhooking device 4;

[0047] The hoisting frame 2 is a pyramidal three-dimensional frame structure;

[0048] One end of the sling assembly 1 is used to connect the drone, and the other end is connected to the top of the bottom surface of the hoisting frame 2;

[0049] The central lifting rod 3 is set in the frame space of the hoisting frame 2. The upper end of the central lifting rod 3 is suspended from the cone top of the hoisting frame 2, and the lower end is connected to the unhooking device 4.

[0050] The unhooking device 4 is used to hook and attach goods.

[0051] It should be noted that in this embodiment, the hoisting frame 2 is configured as a pyramidal three-dimensional frame structure, with the central lifting rod 3 and the unhooking device 4 positioned within the pyramidal three-dimensional frame space, specifically at the center of the area enclosed by the frame members 21 of the hoisting frame 2. The sling assembly 1 is connected to the apex of the bottom surface of the hoisting frame 2, with each apex of the bottom surface of the hoisting frame 2 corresponding to one sling assembly 1. Each side of the bottom surface of the hoisting frame 2 has an equal side length, and the unhooking device 4 is suspended from the pyramidal apex of the hoisting frame 2 via the central lifting rod 3. Therefore, during hoisting, each side of the hoisting frame 2 experiences equal force, facilitating balance and effectively eliminating or reducing the swaying of the hoisting frame 2 during hoisting.

[0052] In this embodiment, the hoisting frame 2 includes frame members 21 and a central crossbar 22;

[0053] The frame members 21 assemble the hoisting frame 2 into a pyramidal three-dimensional shape;

[0054] The central crossbar 22 is set at the top of the cone of the hoisting frame 2;

[0055] The upper end of the central hanging column 3 is suspended and connected to the central crossbar 22.

[0056] It should be noted that the hoisting frame 2 includes frame members 21 and a central crossbar 22. The frame members 21 enclose and form the main frame of the hoisting frame 2. Then, the central crossbar 22 is set at the cone top of the hoisting frame 22. That is, one end of the central crossbar 22 is connected to the top of half of the side edge of the hoisting frame 22, and a common point is formed at one end of the central crossbar 22. The other end of the central crossbar 22 is connected to the top of the other half of the side edge of the hoisting frame 22, and another common point is formed at the other end of the central crossbar 22.

[0057] The hoisting frame 2 has a central crossbar 22 at the top of the cone to provide a point of force for the central hanging column 3 to be suspended on the hoisting frame.

[0058] In this embodiment, the hoisting frame 2 further includes a connecting joint 23;

[0059] The connecting joint 23 is located at the connection part of the frame member 21 at the bottom apex of the hoisting frame 2;

[0060] The frame members 21 at the bottom apex of the hoisting frame 2 are connected by bolts or welding through the connecting joint 23, so that the hoisting frame 2 forms a pyramidal three-dimensional frame structure.

[0061] It should be noted that in this embodiment, a connecting joint 23 is provided at the bottom apex of the hoisting frame 2 to facilitate the detachable connection between the hoisting frame 2 and the sling assembly 1. That is, when hoisting is required, the sling assembly 1 can be connected to the connecting joint 23, and when hoisting is not required, the sling assembly 1 can be removed from the connecting joint 23.

[0062] Furthermore, the connecting joint 23 can also serve as a connecting device at the intersection of the frame members 21 at the bottom apex. That is, the connecting joint can penetrate two frame members 21 and one frame member 21 containing a side edge on the bottom surface of the hoisting frame 2, thus fixing the three frame members 21 at the bottom apex. The fixing method can be bolted or welded. If bolted, one end of the connecting joint 23 is set as a lifting ring, and the other end as a threaded rod. Coaxial threaded holes matching the threaded rod of the connecting joint 23 are provided on the three frame members 21 at the intersection of the bottom apex of the hoisting frame 2. The threaded rod is then sequentially inserted into the threaded holes on the three frame members 21 and tightened to fix the three frame members 21 at the bottom apex.

[0063] In this embodiment, both ends of the central hanging column 3 are provided with lifting rings;

[0064] The central lifting column 3 is connected to the lifting frame 2 by passing the upper lifting ring through the central crossbar 22;

[0065] The central lifting column 3 is connected to the unhooking device 4 via the lifting ring at its lower end.

[0066] It should be noted that by setting lifting rings at both ends of the central column 3, the upper lifting ring passes through the central crossbar to suspend the central column 3 at the top of the cone of the hoisting frame 2, and the lower lifting ring is connected to the hook 4. The two lifting rings allow the central column to swing in a certain direction, avoiding a rigid connection between the central column 3 and the hoisting frame 2 or the hook, thus preventing lateral movement of the hoisting frame 2 during hoisting and helping to keep the hoisting frame 2 stable.

[0067] In this embodiment, the hoisting frame 2 is a four-sided pyramidal hoisting frame.

[0068] It should be noted that calculations during experiments and actual applications show that the structure of the square pyramid is relatively stable. Therefore, in this embodiment, the hoisting frame 2 adopts a square pyramid shape.

[0069] In this embodiment, the surface of the central hanging column 3 is provided with a stress buffer structure.

[0070] It should be noted that a stress buffer structure is set on the surface of the central hanging column 3 so that the central hanging column 3 basically retains only axial tensile force, thereby reducing stress concentration at the root and preventing fatigue cracks.

[0071] In this embodiment, the sling assembly 1 includes a sling 11, a sling 12, and a connecting shackle 13;

[0072] One end of the sling 12 is connected to the sling 11, and the other end is connected to the connecting shackle 13;

[0073] The hook 11 is used to connect the drone;

[0074] The connecting shackle 13 connects the sling 12 to the bottom apex of the hoisting frame 2, realizing the transfer function.

[0075] It should be noted that in this embodiment, the sling assembly 1 uses sling buckles 11 and connecting shackles 13 at both ends of the sling 12 to achieve flexible installation and disassembly of the sling 12.

[0076] In this embodiment, the hook 11 is a gourd-shaped hook; the connection point between the hook 11 and the sling 12 is rectangular;

[0077] The connecting shackle 13 is a gourd-shaped high-strength connecting shackle.

[0078] It should be noted that the lifting hook 11 adopts a gourd-shaped hook adapted to the drone lifting interface, giving the lifting hook 11 an anti-disengagement limiting structure. The connecting shackle 3 adopts a gourd-shaped high-strength shackle, whose rated load-bearing capacity matches the maximum lifting weight of the entire lifting equipment, making it both safe and economical.

[0079] In this embodiment, the sling 12 is made of steel wire rope or high-strength synthetic fiber rope, and is wrapped with a wear-resistant protective layer.

[0080] In this embodiment, the unhooking device 4 is equipped with a servo motor 5, which is used to control the unhooking device 4 to unhook.

[0081] The unhooking device 4 is also equipped with a manual unhooking device.

[0082] The unhooking device 4 includes a servo motor 5, which controls the unhooking device 4 to precisely trigger the unhooking action and flexibly adjust the angle and force, ensuring stable, reliable, and repeatable precise unhooking. The control circuit of the servo motor 5 of the unhooking device 4 has an overload protection module.

[0083] In addition, the unhooking device 4 is equipped with a mechanical locking backup structure, which can be used to perform the unhooking operation manually or through a backup power source when the servo motor 5 fails.

[0084] As a specific embodiment, in this embodiment, there are four lifting hooks 11 in total. These four hooks are gourd-shaped and adapted to the drone lifting interface. The connection point is rectangular and features an anti-disengagement limiting structure. Their unique shape and limiting design ensure a tight connection to the lifting end of the heavy-duty drone, preventing accidental detachment during lifting and guaranteeing connection reliability.

[0085] There are four slings 12, one end of which is connected to the hook 11. They are responsible for transmitting the lifting force and transferring the lifting force of the UAV to other parts of the device. Steel wire rope or high-strength synthetic fiber rope is used, with an external wear-resistant protective layer. Steel wire rope has high strength and good toughness, synthetic fiber rope is lightweight and corrosion-resistant, and the wear-resistant protective layer can extend its service life during heavy lifting.

[0086] There are four connecting shackles 13, which are gourd-shaped high-strength shackles with rated loads adapted to the lifting capacity of the device. As a transition component, they connect the sling 12 to the frame structure 2, realizing the transfer of force and ensuring a stable connection between different components.

[0087] The frame members 21 are made of lightweight, high-strength alloy tubing, which is both strong and lightweight, balancing the strength of the device and the payload requirements of the UAV. The frame members 21 are connected by bolts or welding through connecting joints 13 to form a stable pyramidal three-dimensional frame structure, which serves as the support foundation for the device and uses geometric stability to suppress the swaying of goods during hoisting.

[0088] There are four connecting joints 23, which are set at the connection points of the frame members 4. They are used to ensure the stability of the connection of the frame members 21 by bolts or welding. They are key components for building a stable frame structure and ensure that the frame does not deform or fall apart under heavy loads and swaying conditions.

[0089] The central lifting column 22 is a hollow or solid alloy column, which is connected to the frame member 21 by passing through the central horizontal column of the lifting frame 2 via the upper lifting ring.

[0090] The unhooking device 4 is connected at one end to the central lifting column 22 and at the other end to the cargo, serving as the actuating component for unhooking the cargo. It integrates a servo motor 5, leveraging the precise control advantage of the servo motor 5 to accurately trigger the unhooking action, flexibly adjusting the unhooking angle and force to ensure stable, reliable, and repeatable precise unhooking. It also features a mechanical locking backup structure to address servo motor 5 malfunctions, allowing for unhooking via manual operation or a backup power source, thus improving operational reliability.

[0091] In the specific implementation process, the two ends of the sling 12 are connected to the hook 11 and the connecting shackle 13 respectively. The hook 11 is connected to the drone, and the connecting shackle 13 is connected to the connecting joint 23. The goods to be lifted are hung on the unhooking device to realize the lifting of the goods.

[0092] Through the above specific implementation methods, the anti-sway device of this utility model can effectively realize the anti-sway function in the lifting operation of heavy-load UAVs, accurately and reliably complete the unhooking operation, provide stable and safe technical support for UAV lifting operations, and adapt to the lifting needs under complex working conditions.

[0093] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A hoisting device for heavy load drones, characterized in that, include: Sling assembly (1), hoisting frame (2), central lifting column (3), unhooking device (4); The hoisting frame (2) is a pyramidal three-dimensional frame structure; One end of the sling assembly (1) is used to connect the drone, and the other end is connected to the bottom vertex of the hoisting frame (2); The central lifting column (3) is set in the frame space of the hoisting frame (2). The upper end of the central lifting column (3) is connected to the cone top of the hoisting frame (2), and the lower end is connected to the unhooking device (4). The unhooking device (4) is used to hook the goods.

2. The hoisting device for a heavy-load unmanned aerial vehicle according to claim 1, characterized in that, The hoisting frame (2) includes frame members (21) and a central crossbar (22). The frame members (21) combine the hoisting frame (2) into a pyramidal three-dimensional shape; The central crossbar (22) is set at the top of the cone of the hoisting frame (2); The upper end of the central hanging column (3) is connected to the central crossbar (22).

3. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 2, characterized in that, The hoisting frame (2) also includes a connecting joint (23); The connecting joint (23) is located at the connection part of the frame member (21) at the bottom apex of the hoisting frame (2); The frame members (21) at the bottom apex of the hoisting frame (2) are connected by bolts or welding through the connecting joint (23) so that the hoisting frame (2) forms a pyramidal three-dimensional frame structure.

4. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 3, characterized in that, Both ends of the central hanging column (3) are equipped with lifting rings; The central lifting column (3) is connected to the lifting frame (2) by passing the upper lifting ring through the central crossbar (22); The central lifting column (3) is connected to the unhooking device (4) through the lifting ring at the lower end.

5. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 1 or 4, characterized in that, The hoisting frame (2) is a four-sided pyramidal hoisting frame.

6. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 5, characterized in that, The surface of the central hanging column (3) is provided with a stress buffer structure.

7. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 1 or 6, characterized in that, The sling assembly (1) includes a sling (11), a sling (12), and a connecting shackle (13); One end of the sling (12) is connected to the sling (11), and the other end is connected to the shackle (13); The hook (11) is used to connect the drone; The connecting shackle (13) connects the sling (12) to the bottom apex of the hoisting frame (2) to realize the transfer function.

8. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 7, characterized in that, The hook (11) is a gourd-shaped hook; the connection point between the hook (11) and the sling (12) is rectangular; The connecting shackle (13) is a gourd-shaped high-strength connecting shackle.

9. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 8, characterized in that, The sling (12) is made of steel wire rope or high-strength synthetic fiber rope and is wrapped with a wear-resistant protective layer.

10. A hoisting device for a heavy-load unmanned aerial vehicle according to claim 1 or 9, characterized in that, The unhooking device (4) is equipped with a servo motor (5), which is used to control the unhooking device (4) to unhook; The unhooking device (4) is also equipped with a manual unhooking device.

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