A UAV rescue throwing device

Abstract

This invention belongs to the field of unmanned aerial vehicle (UAV) technology and discloses a UAV rescue throwing device. The UAV rescue throwing device includes a UAV and a throwing device, which is installed on the bottom of the UAV. The throwing device includes a mounting plate, a main mounting assembly, and a secondary mounting assembly. The mounting plate is installed on the bottom of the UAV, and the main mounting assembly is installed in the middle of the lower surface of the mounting plate for carrying supplies. This UAV rescue throwing device, utilizing the design of the secondary mounting assembly and its rectangular arrangement combined with real-time pressure detection by pressure sensors, can quickly balance the position of supplies and select the center of gravity. Combined with the fixation of the main mounting assembly, it ensures that the supplies and the UAV's center of gravity coincide, forming a relatively stable integrated structure. This greatly reduces the adverse effects of supplies on the UAV during flight and solves the problems mentioned in the background art.

Description

Technical Field

[0001] This invention relates to the technical field of drones, specifically to a drone rescue throwing device. Background Technology

[0002] Drones have unique advantages in participating in rescue operations. For example, during earthquakes, when roads are damaged and vehicles are unable to pass, drones can be used to drop relief supplies to sustain life. During floods, drones can be used to drop lifebuoys. During forest fires, drones can be used to enter the fire area to drop extinguishing bombs, reducing the risk to firefighters entering the fire area. In particular, multi-rotor drones have obvious advantages in the field of rescue compared to fixed-wing drones. They can hover, have extremely high precision in pinpoint delivery, adapt to take-off and landing in complex terrain, are inexpensive, and have strong payload and scene adaptability.

[0003] When using drones for material delivery, a throwing device is still needed. In actual use, we found that when materials are mounted at a single point, the materials are prone to swaying when the drone flies horizontally. When multiple points are mounted, it is difficult to select the center of gravity of the materials, making it difficult to ensure that the center of gravity of the materials and the drone coincides. The motor load of the drone increases on one side, and the flight becomes unstable. To address this problem, we have proposed a throwing device for drone rescue. Summary of the Invention

[0004] The purpose of this invention is to provide a throwing device for drone rescue, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drone rescue throwing device, comprising a drone and a throwing device, wherein the throwing device is installed on the bottom of the drone, and the throwing device includes:

[0006] Mounting plate, which is mounted on the bottom of the drone;

[0007] The main mounting assembly is installed in the middle of the lower surface of the mounting plate for mounting materials.

[0008] Sub-mounting assemblies: Several sub-mounting assemblies are located around the main mounting assembly to assist in mounting materials and reduce material movement during transportation.

[0009] Preferably, the main mounting assembly includes a main mounting box, a mounting slot, a connecting screw slot, a connecting bolt, a main mounting rope, and a cutting component. The mounting slot is located in the middle of the lower surface of the main mounting box. The bottom wall of the mounting slot has a connecting screw slot, and the connecting bolt is threaded into the connecting screw slot. One end of the main mounting rope is fixedly connected to the head of the connecting bolt. The main mounting box has a cavity around the mounting slot, in which a cutting component is installed to cut the main mounting rope when throwing materials. The side wall of the mounting slot has a notch corresponding to the position of the cutting component.

[0010] Preferably, the cutting assembly includes a drive component, a connecting frame, a cutting component, and electrical contacts. The drive component is installed on the inner wall of the cavity, and the connecting frame is fixedly connected to the output end of the drive component. The connecting frame is U-shaped, and both ends of the cutting component are fixedly connected to the connecting frame. The drive component pushes the cutting component to move linearly from the notch towards the main load rope. The movement paths of the two ends of the cutting component are on both sides of the main load rope. Two electrical contacts are respectively provided on the connecting frame. The two electrical contacts are electrically connected to both ends of the cutting component. The electrical contacts are energized to heat up the cutting component and assist in cutting the main load rope.

[0011] Preferably, the cutting element is a blade, with the cutting edge pointing towards the main mounting rope.

[0012] Preferably, the cutting element is a heating wire.

[0013] Preferably, the number of sub-mount components is four, and the line connecting the four sub-mount components forms a rectangle centered on the main mount component.

[0014] Preferably, the auxiliary mounting assembly includes an auxiliary mounting box, a plug slot, a plug block, a limiting plug hole, a connecting post, an auxiliary mounting rope, an electric actuator, and a limiting plug rod. The auxiliary mounting box is fixedly connected to the lower surface of the mounting plate. A plug slot is provided on one side of the lower surface of the auxiliary mounting box. The plug block is inserted into the plug slot. The limiting plug hole is provided on the plug block, and the two ends of the limiting plug hole are located on the two side walls of the plug block. The connecting post is inserted into the limiting plug hole. One end of the auxiliary mounting rope passes through the bottom wall of the plug block and extends into the limiting plug hole and is fixedly connected to the connecting post. Limiting through holes are provided on both side walls of the plug slot at the positions corresponding to the limiting plug holes. The electric actuator is fixedly installed on the upper surface of the mounting plate. One end of the limiting plug rod is fixedly connected to the output end of the electric actuator, and the other end of the limiting plug rod is inserted into the limiting through hole. A pressure sensor is also installed on the other end of the limiting plug rod.

[0015] Preferably, the bottom of the limiting rod has a groove to provide space for the auxiliary hanging rope to move, and the bottom wall of the insertion groove is fitted with a magnetic block for adsorbing the insertion block.

[0016] Preferably, the top of the limiting rod is sloped, so that the cross-sectional area of ​​the limiting rod decreases from the end closest to the driving member to the other end.

[0017] Preferably, both the main mounting rope and the auxiliary mounting rope have hooks connected to their bottom ends.

[0018] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0019] 1. This drone rescue throwing device utilizes the design of the auxiliary mounting components and the rectangular arrangement of the components, combined with real-time pressure detection by pressure sensors, to quickly balance the position of the supplies and select the center of gravity. Then, with the main mounting components for fixation, it can ensure that the supplies and the drone's center of gravity coincide to form a relatively stable integrated structure, greatly reducing the adverse effects of the supplies on the drone's flight and solving the problems mentioned in the background technology.

[0020] 2. This drone rescue throwing device utilizes the design of the main mounting component and employs a cutting component to directly cut the main mounting rope, allowing supplies to quickly detach from the drone and avoiding the situation where the servo motor of traditional throwing devices jams, preventing the supplies from being thrown. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the throwing device of the present invention;

[0023] Figure 3 This is a schematic diagram of the main mounting component of the present invention;

[0024] Figure 4 This is a schematic diagram of the sub-mount component of the present invention;

[0025] Figure 5 This is a schematic diagram of the limiting insert of the present invention.

[0026] In the diagram: 1. UAV; 2. Mounting plate; 3. Main mounting assembly; 31. Main mounting box; 32. Mounting slot; 33. Connecting screw slot; 34. Connecting bolt; 35. Main mounting rope; 36. Cutting assembly; 361. Drive component; 362. Connecting frame; 363. Cutting component; 364. Electrical contact; 4. Secondary mounting assembly; 41. Secondary mounting box; 42. Insertion slot; 43. Insertion block; 44. Limiting insertion hole; 45. Connecting post; 46. Secondary mounting rope; 47. Electric actuator; 48. Limiting insertion rod; 49. Limiting through hole; 410. Pressure sensor; 411. Magnetic block; 5. Hook. Detailed Implementation

[0027] Please see Figure 1-5 The present invention provides a technical solution: a throwing device for rescue using a drone 1, comprising a drone 1 and a throwing device, wherein the throwing device is installed on the bottom of the drone 1, and the throwing device includes:

[0028] Mounting plate 2 is installed on the bottom of UAV 1. The bottom of UAV has a standardized installation interface for precise docking with mounting plate 2 of the throwing device.

[0029] The main mounting component 3 is installed in the middle of the lower surface of the mounting plate 2 for loading materials. As the core mounting structure, the main mounting component 3 should be installed in the same vertical line as the center of gravity of the UAV 1 to effectively prevent the center of gravity of the UAV from shifting after loading materials and ensure flight stability.

[0030] Auxiliary mounting components 4, several of which are distributed around the main mounting component 3, are used to assist in the mounting of materials to reduce the shaking of materials during transportation. The auxiliary mounting components 4 are evenly distributed around the main mounting component 3 to form a symmetrical mounting structure. By mounting at multiple points, the weight of the materials is distributed, avoiding excessive force on a single mounting point that could lead to damage to the materials or breakage of the mounting rope. At the same time, it limits the horizontal shaking and rotation of the materials during flight. There are four auxiliary mounting components 4, and the line connecting the four auxiliary mounting components 4 forms a rectangle centered on the main mounting component 3.

[0031] The main mounting assembly 3 includes a main mounting box 31, a mounting groove 32, a connecting screw groove 33, a connecting bolt 34, a main mounting rope 35, and a cutting assembly 36. The mounting groove 32 is located in the middle of the lower surface of the main mounting box 31. The bottom wall of the mounting groove 32 has a connecting screw groove 33. The connecting bolt 34 is threaded into the connecting screw groove 33. The connecting screw groove 33 has an internal thread structure, and the thread specification matches the connecting bolt 34 to ensure that the connecting bolt 34 has sufficient connection strength after being screwed in and is not easy to fall off. One end of the main mounting rope 35 is fixedly connected to the head of the connecting bolt 34. The bottom end of the main mounting rope 35 is connected to a hook 5 for attaching materials. The cutting assembly 36 is installed in the cavity around the mounting groove 32 inside the main mounting box 31 to cut the main mounting rope 35 when throwing materials. The side wall of the mounting groove 32 has a notch corresponding to the position of the cutting assembly 36.

[0032] The cutting assembly 36 includes a drive unit 361, a connecting frame 362, a cutting component 363, and electrical contacts 364. The drive unit 361 is mounted on the inner wall of the cavity. The drive unit 361 can be a linear motor, preferably a small servo linear motor. The connecting frame 362 is fixedly connected to the output end of the drive unit 361. The connecting frame 362 is U-shaped. Both ends of the cutting component 363 are fixedly connected to the connecting frame 362. The drive unit 361 pushes the cutting component 363 to move linearly from the notch towards the main hanging rope 35. The direction of movement of the cutting component 363 is perpendicular to the axis of the main hanging rope 35, ensuring precise action on the main hanging rope 35 during cutting and improving cutting efficiency. The movement paths of the two ends of the cutting component 363 are located on both sides of the main hanging rope 35. Two electrical contacts 364 are respectively provided on the connecting frame 362. The electrical contacts 364 are... The copper conductive contacts are silver-plated to reduce contact resistance and ensure good conductivity. An insulating gasket is placed between the contacts and the connecting frame 362 to prevent short circuits. Two electrical contacts 364 are electrically connected to both ends of the cutting component 363. DC power is supplied to the electrical contacts 364 to heat up the cutting component 363 and assist in cutting the main mounting rope 35. Furthermore, the power supply for the electrical contacts 364 can be provided by the drone's power supply or independently powered by a battery installed on the mounting plate 2. The DC voltage is 12-24V, and the voltage can be adjusted according to the material and diameter of the main mounting rope 35 to achieve precise control of the heating temperature. After heating, the cutting component 363 can quickly soften the nylon main mounting rope 35, reduce cutting resistance, ensure a smooth and fast cutting process, and avoid the main mounting rope 35 from being pulled, broken, or incompletely cut.

[0033] Please see Figure 3 The cutting element 363 is either a blade or a heating wire. When it is a blade, its cutting edge points towards the main mounting rope 35. The axial direction of the cutting element 363 is at an angle to its direction of movement, with an angle of 30°-45°. This angle design allows the cutting element 363 to make an oblique cut when it contacts the main mounting rope 35. Compared to vertical cutting, this can disperse the cutting force, reduce the wear of the cutting element 363, and ensure that the main mounting rope 35 can break quickly. If a heating wire is used, a nickel-chromium alloy heating wire with a diameter of 1-2mm is used. It has a stable resistance value and can heat up quickly after being energized, making it suitable for cutting thicker main mounting ropes 35.

[0034] The auxiliary mounting assembly 4 includes an auxiliary mounting box 41, a plug slot 42, a plug block 43, a limiting plug hole 44, a connecting post 45, an auxiliary mounting rope 46, an electric actuator 47, and a limiting plug rod 48. The auxiliary mounting box 41 is fixedly connected to the lower surface of the mounting plate 2. A plug slot 42 is provided on one side of the lower surface of the auxiliary mounting box 41. The plug block 43 is inserted into the plug slot 42. The limiting plug hole 44 is provided on the plug block 43, and the two ends of the limiting plug hole 44 are located on the two side walls of the plug block 43. The connecting post 45 is inserted into the limiting socket 44. One end of the auxiliary mounting rope 46 passes through the bottom wall of the insert block 43 and extends into the limiting socket 44, where it is fixedly connected to the connecting post 45. The bottom end of the auxiliary mounting rope 46 is connected to a hook 5 for attaching materials. Limiting through holes 49 are provided on both sides of the insert groove 42 at positions corresponding to the limiting socket 44. The electric actuator 47 is fixedly installed on the upper surface of the mounting plate 2. One end of the limiting rod 48 is fixedly connected to the output end of the electric actuator 47. The other end of the limit rod 48 is inserted into the limiting through hole 49, and a pressure sensor 410 is also installed on the other end of the limit rod 48. The pressure sensor 410 is used to detect the pressure between the limit rod 48 and the connecting post 45 in real time. The value of each pressure sensor 410 directly reflects the tension applied by the material to the auxiliary mounting rope 46. The pressure sensor 410 is a small strain gauge pressure sensor with a measurement range of 0-50kg and an accuracy of ±0.1kg. It can detect the pressure between the limit rod 48 and the connecting post 45 in real time and accurately. The output end of the sensor is connected to the control system of the UAV through a wire to realize the real-time transmission and display of pressure data. By moving each electric push rod 47 independently to push the connecting post 45 to different depths in the limiting through hole 49, the tension received by each auxiliary mounting rope 46 tends to be consistent, so that the center of gravity of the material is under the main mounting rope 35, avoiding the situation where the center of gravity of the material shifts and the UAV becomes unstable.

[0035] Furthermore, the operation of the sub-mounted assembly 4 can be divided into two steps. First, the electric push rod 47 advances at a fixed distance, causing the connecting column 45 to enter the limiting through hole 49. Second, based on the maximum value among the four pressure sensors 410, the electric push rod 47 continues to advance the connecting column 45 until the corresponding pressure sensor 410 obtains the reference value, thus completing the selection of the center of gravity of the material.

[0036] It should be noted that both the main mounting rope 35 and the auxiliary mounting rope 46 are made of high-strength nylon rope, which will not be elaborated further.

[0037] The bottom of the limiting rod 48 has a groove to provide space for the auxiliary hanging rope 46 to move. That is, when the limiting rod 48 pushes the connecting column 45, the part of the auxiliary hanging rope 46 that enters the limiting insertion hole 44 is in the groove to avoid the structure being stuck. The bottom wall of the insertion groove 42 is fitted with a magnetic block 411 to attract the insertion block 43, so that the insertion block 43 can be pre-positioned after being inserted into the insertion groove 42. The insertion block 43 is made of iron.

[0038] The top of the limiting rod 48 is set with a slope, so that the cross-sectional area of ​​the limiting rod 48 decreases from one end near the driving member 361 to the other end. The slope design can reduce the frictional force at the contact position between the limiting rod 48 and the limiting hole 44, making it easier for the limiting rod 48 to disengage from the limiting hole 44 and preventing the structure from being stuck.

[0039] When using this equipment, place the material to be loaded under the mounting plate 2, hook the hooks 5 on the four auxiliary mounting ropes 46 to the corresponding positions of the auxiliary mounting ropes 46 on the material, start the electric push rod 47 to push the limit plug 48 into the limit plug hole 44, push the connecting column 45 to move into the limit through hole 49, each auxiliary mounting rope 46 is pulled, each pressure sensor 410 detects the pressure between the connecting column 45 and the limit plug 48 in real time, each electric push rod 47 works independently, when the connecting column 45 enters the limit through hole 49, the material is suspended, with the value of the pressure sensor 410 with the largest value as a reference, the electric push rod 47 continues to push the corresponding connecting column 45 until the value detected by the corresponding pressure sensor 410 is consistent with the reference value, at this time the material position corresponding to the main mounting rope 35 is within its center of gravity range, hook 5 is hung in the corresponding position, and the loading of the material is completed;

[0040] After the drone flies to the drop point and hovers, all electric actuators 47 retract synchronously, causing the limiting rod 48 to disengage from the limiting insertion hole 44. As the auxiliary mounting rope 46 is gradually released, the weight of the material is supported by the main mounting rope 35. The resistance of the limiting rod 48 retracts significantly. Then, the drive component 361 pushes the connecting frame 362 to move towards the main mounting rope 35. The cutting component 363 cuts the main mounting rope 35, the material is released, and the insertion block 43 disengages from the insertion slot 42, completing the material delivery.

[0041] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drone-based rescue throwing device, comprising a drone and a throwing device, wherein the throwing device is mounted on the bottom of the drone, characterized in that: The throwing device includes: Mounting plate, which is mounted on the bottom of the drone; The main mounting assembly is installed in the middle of the lower surface of the mounting plate for mounting materials. Sub-mounting assemblies: Several sub-mounting assemblies are located around the main mounting assembly to assist in mounting materials and reduce material movement during transportation.

2. The throwing device for drone rescue according to claim 1, characterized in that: The main mounting assembly includes a main mounting box, a mounting slot, a connecting screw slot, a connecting bolt, a main mounting rope, and a cutting component. The mounting slot is located in the middle of the lower surface of the main mounting box. The bottom wall of the mounting slot has a connecting screw slot, and the connecting bolt is threaded into the connecting screw slot. One end of the main mounting rope is fixedly connected to the head of the connecting bolt. The cutting component is installed in the cavity around the mounting slot inside the main mounting box for cutting the main mounting rope when throwing materials. The side wall of the mounting slot has a notch corresponding to the position of the cutting component.

3. The throwing device for drone rescue according to claim 2, characterized in that: The cutting assembly includes a drive unit, a connecting frame, a cutting component, and electrical contacts. The drive unit is installed on the inner wall of the cavity, and the connecting frame is fixedly connected to the output end of the drive unit. The connecting frame is U-shaped, and both ends of the cutting component are fixedly connected to the connecting frame. The drive unit pushes the cutting component to move linearly from the notch towards the main hanging rope. The movement paths of the two ends of the cutting component are on both sides of the main hanging rope. Two electrical contacts are respectively provided on the connecting frame. The two electrical contacts are electrically connected to both ends of the cutting component. Connecting the electrical contacts to the electrical contacts causes the cutting component to heat up and assist in cutting the main hanging rope.

4. A throwing device for drone rescue according to claim 3, characterized in that: The cutting element is a blade, with its cutting edge pointing towards the main mounting rope.

5. A throwing device for drone rescue according to claim 3, characterized in that: The cutting element is a heating wire.

6. A throwing device for drone rescue according to claim 5, characterized in that: The number of sub-mount components is four, and the line connecting the four sub-mount components forms a rectangle centered on the main mount component.

7. A throwing device for drone rescue according to claim 1, characterized in that: The auxiliary mounting assembly includes an auxiliary mounting box, a plug slot, a plug block, a limiting plug hole, a connecting post, an auxiliary mounting rope, an electric actuator, a limiting plug rod, a limiting through hole, and a pressure sensor. The auxiliary mounting box is fixedly connected to the lower surface of the mounting plate. A plug slot is provided on one side of the lower surface of the auxiliary mounting box. The plug block is inserted into the plug slot. The limiting plug hole is provided on the plug block, and the two ends of the limiting plug hole are located on the two side walls of the plug block. The connecting post is inserted into the limiting plug hole. One end of the auxiliary mounting rope passes through the bottom wall of the plug block and extends into the limiting plug hole and is fixedly connected to the connecting post. Limiting through holes are provided on both side walls of the plug slot at the positions corresponding to the limiting plug hole. The electric actuator is fixedly installed on the upper surface of the mounting plate. One end of the limiting plug rod is fixedly connected to the output end of the electric actuator, and the other end of the limiting plug rod is inserted into the limiting through hole. A pressure sensor is also installed on the other end of the limiting plug rod.

8. A throwing device for drone rescue according to claim 7, characterized in that: The bottom of the limiting rod has a groove to provide space for the auxiliary hanging rope to move, and the bottom wall of the insertion groove is fitted with a magnetic block for adsorbing the insertion block.

9. A throwing device for drone rescue according to claim 8, characterized in that: The top of the limiting rod is sloped, so that the cross-sectional area of ​​the limiting rod decreases from the end closest to the electric actuator to the other end.

10. A throwing device for drone rescue according to any one of claims 2 or 7, characterized in that: Both the main mounting rope and the auxiliary mounting rope have hooks connected to their bottom ends.

Images