A general-purpose magnetic multi-contact load loading and throwing system for unmanned aerial vehicles

Abstract

The utility model provides a kind of unmanned plane general magnetic type multi-contact load loading and throwing system, belong to unmanned plane load loading and throwing system field, including bearing frame, controller, remote control antenna, hanging joint and electromagnetic chuck, bearing frame is provided with accommodating cavity, upper end is provided with connecting structure, controller and remote control antenna fixed device in accommodating cavity, hanging joint lower end is provided with hanging cooperation structure, hanging cooperation structure and hanging connection structure are mutually matched, and bearing frame can be detachably connected on hanging joint, at least 1 electromagnetic chuck is installed on bearing frame, controller, remote control antenna and electromagnetic chuck are connected in control circuit respectively, the system sets up multiple electromagnetic chuck as mutually independent magnetic adsorption contact point, using the controller with multiple feedback remote control switch respectively controls the excitation and demagnetization state of each contact point, realizes unmanned plane in one flight range to the load loaded in different throwing destination respectively implements throwing, shortens flight mileage, improves throwing efficiency.

Description

Technical Field

[0001] This utility model relates to a drone payload loading and throwing system, specifically a universal magnetic multi-contact payload loading and throwing system for drones. Background Technology

[0002] With the in-depth development of drone technology, its function has rapidly evolved from an observation and monitoring tool to a precision operation platform, finding widespread application in emergency rescue, logistics and distribution, and industrial production operations. This has gradually created a demand for airborne payload loading and dropping capabilities. Existing technologies for drone dynamic payload loading and dropping mainly fall into two categories: mechanical and magnetic. Magnetic payload loading and dropping methods have gained significant attention due to their high loading and dropping efficiency, simple loading structure, and low drone compatibility requirements. Utility model patent CN222859722U discloses "a dropping device and a drone," specifically disclosing "a dropping device." Utilizing the principles of magnetic attraction and the magnetic field formed by current flowing through a coil, it achieves switching between a fixed state and a dropping state. The overall structure is simple, small in size, lightweight, easy to install, and has low production costs. The entire fixing, transportation, and dropping process is flexible, convenient, and fast, significantly improving dropping efficiency. However, the publicly available technical solutions utilize a combination of soft magnets and coils to provide the working magnetic field, essentially employing an electrostatic adsorption method for loading loads. This loading method not only consumes a significant amount of electrical energy, but also generates overheating due to continuous energization, which can lead to localized temperature increases that damage electrical components or mechanical parts, shortening their lifespan and posing significant safety hazards. Furthermore, the overall structure and process control of this device are integrated with specific UAVs, resulting in a limited range of compatible models and restricting its widespread application. Additionally, the device lacks the capability for simultaneous loading and individual release of multiple loads, indicating that both its structure and functionality require further improvement. Therefore, it is necessary to conduct more in-depth research and development on UAV magnetic load loading and release systems based on existing technologies to improve their compatibility with UAVs and the flexibility of load loading and release. Utility Model Content

[0003] The purpose of this invention is to provide a universal magnetic multi-contact load loading and throwing system for UAVs, which optimizes the design structure, improves the functionality, increases work efficiency, and solves existing technical problems.

[0004] A universal magnetic multi-contact load loading and dropping system for unmanned aerial vehicles (UAVs) includes: a carrier frame, a controller, a remote control antenna, a mounting connector, and an electromagnetic chuck. The carrier frame is a load-bearing structure with a closed accommodating cavity. A mounting connection structure is located at the upper end of the frame. The controller and the remote control antenna are fixed within the accommodating cavity. The mounting connector can be attached to the lower end of a corresponding UAV. The lower end of the connector has a mounting mating structure corresponding to the mounting connection structure on the carrier frame. The mounting mating structure and the mounting connection structure work together to detachably fix the carrier frame to the mounting connector. Furthermore, the carrier frame can be hung on the lower end of the UAV via the mounting connector. The electromagnetic chuck consists of a coil and a magnet. An integrated combination of components, at least one of the electromagnetic chucks with its contact surface facing downwards, is installed on the support frame. The controller, the remote control antenna, and the electromagnetic chucks are connected to the corresponding control circuit. The remote control antenna receives ground control commands and transmits them to the controller. The controller, according to the control commands, uses a multiplexer to control the directional excitation and demagnetization states of each electromagnetic chuck. A ferromagnetic metal sheet corresponding to the structure of the electromagnetic chuck is fixedly installed on the load to be transported. When the electromagnetic chuck is in the excitation state, it attracts the ferromagnetic metal sheet to hold the load in place. When the electromagnetic chuck is in the demagnetization state, it separates from the ferromagnetic metal sheet and releases the load.

[0005] The aforementioned universal magnetic multi-contact load loading and throwing system for UAVs further includes a battery. The battery is fixedly connected to the receiving cavity in the support frame and is also connected to the control circuit formed by the controller, the remote control antenna, and the electromagnetic chuck. In the absence of a power adapter interface on the corresponding UAV, the battery can provide driving power to the control circuit, enabling the control circuit to operate independently.

[0006] The aforementioned universal magnetic multi-contact load loading and throwing system for UAVs further includes: a load container, which is a lightweight, flexible, and sealable bag with a ferromagnetic metal sheet attached to its outer surface. The load container can cover loads that do not have magnetic properties or can hold loads that cannot be directly connected to the ferromagnetic metal sheet. Then, the load container is used to load specific loads onto the carrier frame, thereby realizing the transfer and throwing of the load.

[0007] The aforementioned universal magnetic multi-contact load loading and dropping system for unmanned aerial vehicles (UAVs) preferably uses a de-energized electromagnet as the electromagnetic chuck. The magnet in the electromagnetic chuck is a permanent magnet; it retains its magnetism when the coil is de-energized, allowing it to attract the load. When the coil is energized, the magnet loses its magnetism, thus releasing the dropped load. Using the de-energized electromagnet significantly shortens the operating time of the control circuit, reduces its power consumption, lowers the coil's temperature rise, prevents overheating of the control circuit from damaging electrical components, and shortens its service life.

[0008] The aforementioned universal magnetic multi-contact load loading and throwing system for UAVs preferably has loading chambers distributed on the support frame. The loading chambers are correspondingly arranged with the electromagnetic chucks, which can protect and accommodate the transport load loaded on the corresponding electromagnetic chucks, protect the transport load from environmental and meteorological factors and impacts from floating objects in the air, ensure the reliability of load loading, and improve the safety of load transport.

[0009] The aforementioned universal magnetic multi-contact load loading and throwing system for UAVs preferably uses 3D integrated printing to prepare the support frame, the hook connector, and the corresponding supporting structural components. This allows for the rapid construction of complex structures without assembly, which is beneficial for optimizing the design and achieving lightweight components. At the same time, it can fully guarantee the structural strength and accuracy of the components, reduce manufacturing costs, and improve production efficiency.

[0010] The aforementioned universal magnetic multi-contact load loading and throwing system for UAVs preferably features a dovetail track groove mating structure between the upper mounting connection structure of the support frame and the lower mounting engagement structure of the hook connector. At one end of the mating dovetail track and groove, an elastic sheet is provided on the support frame. The elastic sheet is arranged in the same direction as the dovetail track and extends outward relative to the support frame. A limit pin is provided on the free end of the extension. Simultaneously, a limit groove is formed on the hook connector. The structure of the limit groove is consistent with... The position and setting structure of the limiting pin correspond to each other. When the support frame and the hook connector are connected to each other by the dovetail track groove matching structure, the limiting pin can be elastically engaged and embedded in the limiting groove to restrict and lock the connection state between the support frame and the hook connector. By moving the elastic sheet to make the elastic sheet elastically deform, the limiting pin can be moved out of the limiting groove. In this state, the support frame can be easily removed from the hook connector by pulling the hook connector relative to the support frame along the dovetail track direction.

[0011] The beneficial effects of this utility model are as follows: It provides a universal magnetic multi-contact load loading and dropping system for UAVs, which is equipped with multiple electromagnetic chucks as independent magnetic adsorption contacts. A controller with a multi-channel feedback remote control switch controls the excitation and demagnetization states of each contact, enabling the UAV to release and drop the loads adsorbed at each contact to different drop destinations during a single flight. This effectively shortens the UAV's flight mileage and improves the efficiency of load dropping. Moreover, it has an independent process control system, which has low compatibility with UAVs, has wide applicability, and is easy to popularize and promote. Furthermore, the use of de-energized electromagnetic chucks shortens the energization time of the circuit, reduces power consumption, prevents electrical overheating, and improves service life. The use of 3D printing to prepare structural components can improve structural accuracy, reduce manufacturing costs, increase production efficiency, enable the rapid construction of complex structures and the lightweighting of overall components, and enhance the overall functionality of the system. Attached Figure Description

[0012] Figure 1 This is a front view of a magnetic multi-contact load loading and dropping system commonly used by drones.

[0013] Figure 2 for Figure 1 Sectional view of section AA.

[0014] Figure 3 This is a top view of a magnetic multi-contact load loading and dropping system commonly used by drones.

[0015] Figure 4 Side view of a magnetic multi-contact load loading and dropping system commonly used by drones.

[0016] Among them: 1 is the support frame, 2 is the controller, 3 is the remote control antenna, 4 is the hanging connector, 5 is the electromagnetic chuck, 6 is the battery, 7 is the load container, 8 is the loading bin, 9 is the elastic sheet, 10 is the ferromagnetic metal sheet, 11 is the limit pin, 12 is the cavity cover, and 13 is the hanging rod. Detailed Implementation

[0017] Furthermore, the technical solution for which protection is sought in this utility model will be described in detail below with reference to specific embodiments and accompanying drawings.

[0018] A universal magnetic multi-contact load loading and dropping system for unmanned aerial vehicles (UAVs), such as Figures 1 to 4As shown, it consists of a support frame 1, a controller 2, a remote control antenna 3, a mounting connector 4, an electromagnetic chuck 5, a battery 6, and a load container 7. The support frame 1 is generally cylindrical, with a cubical accommodating cavity in the center and six cylindrical loading compartments 8 with open lower ends distributed around the circumference. A cavity cover 12 is fitted onto the upper opening of the accommodating cavity, and a dovetail track is provided on the upper surface of the cavity cover 12. An elastic sheet extending outward along the direction of the dovetail track is provided on one end of the dovetail track. 9. A limiting pin 11 is provided at the free end of the elastic sheet 9. The controller 2, the remote control antenna 3, and the battery 6 are fixedly installed in the accommodating cavity. The controller 2 is a six-channel bidirectional feedback remote control controller. The receiving terminal of the remote control antenna 3 extends from the lower end to outside the accommodating cavity. The electromagnetic chuck 5 is fixedly installed at the top of each loading compartment 8. The electromagnetic chuck 5 is a de-energized electromagnet composed of a coil and a permanent magnet, and is connected to the normally open of the six remote control switches on the controller 2. The terminals are connected to the control circuit formed by interconnecting the controller 2, the remote control antenna 3, and the battery 6. Two hook rods 13 are symmetrically arranged on the hook connector 4 for attaching to the drone. A dovetail groove is provided at the lower end of each rod. The dovetail groove corresponds to the dovetail track structure on the cavity cover 12. The carrier frame 1 can be connected and installed on the hook connector 4 using the corresponding fit between the dovetail groove and the dovetail track. Corresponding to the setting end of the elastic sheet 9, a limiting groove is provided on the hook connector 4, with a setting structure and position corresponding to the limiting pin 11. When the dovetail groove and the dovetail track form a mating connection, the limiting pin 11 can elastically engage and embed into the limiting groove to restrict and lock the connection between the carrier frame 1 and the hook connector 4. Furthermore, the carrier frame 1, the hook connector 4, and the cavity cover 12 are all fabricated using a 3D integrated printing method. The load container 7 is made of lightweight, flexible material, and a circular ferromagnetic metal sheet 10 is attached to its outer surface.

[0019] The usage method and working principle of the universal magnetic multi-contact load loading and throwing system for UAVs described in this embodiment are as follows: In use, firstly, the hook 4 is attached to the lower end of the UAV (which serves as the transport tool) using the hook rod 13. Then, the carrier frame 1 is fixedly attached to the lower end of the hook 4 using the dovetail track groove matching structure between the hook 4 and the carrier frame 1. Next, the load objects or materials to be transported or thrown are sequentially placed into the six loading chambers 8. Load objects or fully packaged load materials that can be fitted with and connected to the ferromagnetic metal sheet 10 can be directly placed in the loading chamber 8 and connected by the ferromagnetic metal sheet 10 and the electromagnetic chuck 5. For load objects or load materials that cannot be fitted with and connected to the ferromagnetic metal sheet 10, they need to be pre-installed in the load container 7, and then the entire load container 7 is installed in the loading chamber 8. The ferromagnetic metal sheet installed on the load container 7 is then used to connect the load objects or load materials. 10 is connected to the electromagnetic chuck 5; after completing the above ground preparations, the UAV can be started for aerial transport. When the UAV arrives at the drop destination and is aligned with the drop location, the ground operator uses a remote control device to issue a control command. The control command is received by the remote control antenna 3 and transmitted to the controller 2 for execution. The controller 2 connects to the electromagnetic chuck 5 in a specific direction according to the control command. After the coil in the electromagnetic chuck 5 is energized, the magnet can be demagnetized. The demagnetized electromagnetic chuck 5 will release the adsorbed load. The released load will fall under its own gravity and be dropped to the predetermined area on the ground. After that, the UAV can continue to carry the load that has not yet been dropped to other drop destinations in sequence, and continue to drop the load until all the loads carried are dropped. Then the UAV returns to the starting point, thus completing the task of dropping the load to multiple drop destinations in one flight.

Claims

1. A universal magnetic multi-contact load loading and dropping system for unmanned aerial vehicles (UAVs), characterized in that, include: The system comprises a support frame (1), a controller (2), a remote control antenna (3), a mounting connector (4), and an electromagnetic chuck (5). The support frame (1) is a load-bearing structure with a closed accommodating cavity and a mounting connection structure at the upper end. The controller (2) and the remote control antenna (3) are fixed in the accommodating cavity. The mounting connector (4) can be attached to the lower end of a corresponding UAV. The lower end is provided with a mounting mating structure corresponding to the mounting connection structure on the support frame (1). The mounting mating structure and the mounting connection structure work together to fix the support frame (1) to the mounting connector (4) in a detachable manner. The electromagnetic chuck (5) is a combination element integrating a coil and a magnet, at least... One of the electromagnetic chucks (5) is horizontally arranged and connected to the support frame (1) with its contact surface facing downwards; the controller (2), the remote control antenna (3) and the electromagnetic chuck (5) are connected to the control line respectively. The remote control antenna (3) receives the ground control command and transmits it to the controller (2). The controller (2) controls the directional excitation and demagnetization state of each electromagnetic chuck (5) through a multiplexer according to the control command. A ferromagnetic metal sheet (10) corresponding to the structure of the electromagnetic chuck (5) is fixedly installed on the load to be transported. When the electromagnetic chuck (5) is in the excitation state, the electromagnetic chuck (5) and the ferromagnetic metal sheet (10) are attracted to maintain the adsorption of the load.

2. The universal magnetic multi-contact load loading and dropping system for UAVs as described in claim 1, characterized in that, Also includes: The battery (6) is fixedly connected to the cavity in the support frame (1) and is connected to the control circuit formed by the controller (2), the remote control antenna (3) and the electromagnetic chuck (5).

3. The universal magnetic multi-contact load loading and dropping system for UAVs as described in claim 2, characterized in that, Also includes: The load container (7) is a lightweight, flexible, and sealable bag with the ferromagnetic metal sheet (10) attached to its outer surface.

4. The universal magnetic multi-contact load loading and dropping system for UAVs as described in claim 3, characterized in that: The electromagnetic chuck (5) is a de-energized electromagnet, wherein the magnet in the electromagnetic chuck (5) is a permanent magnet.

5. The universal magnetic multi-contact load loading and dropping system for UAVs as described in claim 4, characterized in that: Loading bins (8) are distributed on the support frame (1). The loading bins (8) are arranged corresponding to the electromagnetic chucks (5) and can enclose and accommodate the transfer loads loaded on the corresponding electromagnetic chucks (5).

6. A universal magnetic multi-contact load loading and dropping system for unmanned aerial vehicles as described in any one of claims 1 to 5, characterized in that: The support frame (1), the hanging joint (4), and The corresponding structural components are manufactured using 3D integrated printing.

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