A large unmanned aerial vehicle for transporting relief supplies

Abstract

The present invention relates to a large unmanned aerial vehicle for transporting rescue supplies, which includes an unmanned aerial vehicle, a fastening mechanism for hoisting goods, a hook, and an anchor point offset mechanism for adjusting the attitude of the fastening mechanism. The anchor point offset mechanism is installed at the center position of the bottom of the unmanned aerial vehicle, the fastening mechanism is installed at the adjusted position of the anchor point offset mechanism, and the hook is fixed to the bottom of the fastening mechanism; the fastening mechanism includes a top sleeve, the top sleeve is fixedly connected to the bottom of the anchor point offset mechanism, a lifting rope is installed inside the top sleeve, the bottom of the lifting rope is fixedly connected to the hook, and a plurality of fastening sleeves are sleeved outside the lifting rope. The fastening sleeves are connected to the top sleeve through a pressing plate, and the outside of the pressing plate corresponds to the inner wall of the fixed sleeve in the anchor point offset mechanism. The fastening sleeves are connected in cooperation through a clamping component to solve the technical problem that the goods are shaken by side winds during the rapid commutation of the unmanned aerial vehicle and the flight process, affecting the safety of the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles (UAVs), and in particular to a large-scale UAV for transporting rescue materials. Background Art

[0002] Rescue material delivery drones generally use pods or hanging systems to suspend and deliver materials. A pod is a specially designed cargo hold, usually located at the bottom or back of a drone, with appropriate capacity and structural strength to safely carry and release rescue materials. The pod is usually equipped with equipment such as a sling, sling or electric winch to lift or lower the materials. The hanging system connects the rescue materials through ropes, cables or slings, and suspends them under the drone for delivery. This system usually consists of hooks, slings, winches, etc., and the height and position of the materials can be adjusted as needed. The selection of the hanging structure should take into account the carrying capacity, stability and flight characteristics of the drone to ensure that the materials can be transported and delivered safely and stably. In addition, attention should be paid to the impact on the drone's own balance and control during the hanging process to ensure flight safety. The specific hanging structure and configuration will vary depending on the model of the drone and the mission requirements.

[0003] In the prior art, a Chinese invention with authorization announcement number CN112249337B discloses a UAV lifting module, which lifts and transports large cargo by means of four lifting ropes. However, in the current UAV lifting, external factors such as lifting, instantaneous acceleration, and crosswind influence need to be considered. Although the stability of the four lifting ropes is guaranteed to a certain extent, the UAV will tend to tilt during instantaneous acceleration, and in strong winds, the cargo will also be affected by the lateral force. If a single lifting rope or four lifting ropes are used, the former will cause the cargo to swing greatly, and the latter will cause all the swings of the cargo to be transmitted upward through the four ropes. Both swings will cause the UAV to be affected by the large swing, and the downward pulling force on the UAV will fluctuate disorderly, affecting the posture of the UAV and its safety, and will also increase energy consumption in order to adjust the posture. Summary of the invention

[0004] The present invention provides a large-scale unmanned aerial vehicle for transporting rescue materials, so as to solve the technical problem that the safety of the unmanned aerial vehicle is affected by the shaking of cargo caused by the crosswind during the rapid direction change of the unmanned aerial vehicle and the flight.

[0005] A large-scale unmanned aerial vehicle for transporting rescue materials of the present invention adopts the following technical solution: it comprises an unmanned aerial vehicle and a fastening mechanism for hoisting cargo, a hook, and an anchor point offset mechanism for adjusting the posture of the fastening mechanism, the anchor point offset mechanism is installed at the center position of the bottom of the unmanned aerial vehicle, the fastening mechanism is installed at the adjustment position of the anchor point offset mechanism, and the hook is fixed at the bottom of the fastening mechanism;

[0006] The fastening mechanism includes a top sleeve which is fixedly connected to the bottom of the anchor point offset mechanism. A lifting rope is installed inside the top sleeve. The bottom of the lifting rope is fixedly connected with a hook. A plurality of fastening sleeves are sleeved outside the lifting rope. The fastening sleeves and the top sleeve are connected by a pressing plate. The outside of the pressing plate corresponds to the inner wall of the fixed sleeve in the anchor point offset mechanism. The fastening sleeves are connected in cooperation through a clamping component.

[0007] Further, the clamping component includes a mating block and a mating groove. Mating blocks are arranged on the top and bottom end faces of the fastening sleeve, and the mating blocks are evenly distributed along the circumference. A mating groove is arranged between the mating blocks.

[0008] Further, the width of the mating groove is smaller than the width of the mating block.

[0009] Further, the anchor point offset mechanism includes a fixed seat which is fixedly connected to the bottom of the drone. A rotating disk is rotatably connected inside the fixed seat. A fixed sleeve is slidably connected at the central position of the fixed seat. A transverse groove for restricting the sliding of the fixed sleeve is formed on the fixed seat. A pressing component for replacing the posture in cooperation with the top sleeve is arranged on the top end face of the fixed sleeve. A lifting seat is fixed outside the top of the fixed sleeve, and a reset component is installed outside the lifting seat.

[0010] Further, the pressing component includes a pressing block and four connecting rods. The connecting rods penetrate through the top of the fixed sleeve from top to bottom and are connected to the top of the top sleeve. An extrusion groove is arranged inside the drone corresponding to the position of the pressing block, and the extrusion groove is of a conical structure.

[0011] Further, the reset component includes a reset rod and a reset spring. The reset rods are symmetrically arranged on both sides of the lifting seat, and both ends of the reset rods are fixedly connected to the rotating disk through clamping blocks. The lifting seat is slidably connected to the reset rods, and the reset spring is arranged between the reset rods and the lifting seat.

[0012] Further, a plurality of magnetic blocks are evenly arranged on the outer circumferential end face of the rotating disk, and an electromagnet is arranged on the inner side face of the fixed seat corresponding to the position of the magnetic blocks.

[0013] Further, the pressing plate is of an arc plate structure, and both ends of the pressing plate are connected to the top sleeve and the fastening sleeve by welding.

[0014] Further, the material of the pressing plate is 65Mn.

[0015] Further, the cross section of the rotating disk is of a stepped structure, and a stepped support platform is formed on the inner side face of the fixed seat corresponding to the rotating disk.

[0016] The beneficial effect of the present invention is that by utilizing the cooperation of the anchor point offset mechanism and the fastening mechanism, the lifting anchor point can be quickly adjusted when the UAV is quickly started and reversed, thereby reducing the shaking of heavy-loaded cargo when subjected to oblique pulling force, avoiding large swings of the cargo, thereby avoiding affecting the flight attitude of the UAV, and improving the safety of the UAV and the stability of the flight process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a schematic structural diagram of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials according to the present invention;

[0019] Figure 2 This is a schematic diagram of the relative position structure of the anchor point offset mechanism and the fastening mechanism of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials of the present invention;

[0020] Figure 3 This is a schematic diagram of the rotating disk structure of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials according to the present invention;

[0021] Figure 4 A cross-sectional view of a fixed sleeve portion of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials according to the present invention;

[0022] Figure 5 A partial cross-sectional view of a rotating disk of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials according to the present invention;

[0023] Figure 6 This is a schematic diagram of the top view of the structure of a reset assembly of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials of the present invention;

[0024] Figure 7 This is a schematic diagram of the fastening sleeve structure of an embodiment of a large-scale unmanned aerial vehicle for transporting rescue materials according to the present invention;

[0025] Figure 8 It is a structural diagram of an anchor point offset mechanism of a large-scale unmanned aerial vehicle for transporting rescue materials in a straight posture according to an embodiment of the present invention;

[0026] Figure 9 This is a simplified structural diagram of an anchor point offset mechanism in a tilted posture of an embodiment of a large-scale UAV for transporting rescue materials according to the present invention.

[0027] In the figure: 1, unmanned aerial vehicle; 2, anchor point offset mechanism; 3, fastening mechanism; 4, hook; 21, fixed seat; 22, rotating disk; 23, hoisting seat; 24, reset assembly; 25, fixed sleeve; 26, extrusion block; 27, limit retaining ring; 28, magnetic block; 29, extrusion groove; 31, fastening sleeve; 32, lifting rope; 33, top sleeve; 34, extrusion plate; 311, mating block; 312, mating groove. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] An embodiment of a large unmanned aerial vehicle for transporting rescue supplies of the present invention is as Figures 1 to 9 shown, including an unmanned aerial vehicle 1, a fastening mechanism 3 for hoisting goods, a hook 4, and an anchor point offset mechanism 2 for adjusting the attitude of the fastening mechanism 3. The anchor point offset mechanism 2 is installed at the center position of the bottom of the unmanned aerial vehicle 1, the fastening mechanism 3 is installed at the adjusted position of the anchor point offset mechanism 2, and the hook 4 is fixed at the bottom of the fastening mechanism 3;

[0030] The fastening mechanism 3 includes a top sleeve 33, the top sleeve 33 is fixedly connected to the bottom of the anchor point offset mechanism 2, a lifting rope 32 is installed inside the top sleeve 33, the bottom of the lifting rope 32 is fixedly connected to the hook 4, a plurality of fastening sleeves 31 are sleeved outside the lifting rope 32, the fastening sleeves 31 and the top sleeve 33 are connected by an extrusion plate 34, the outside of the extrusion plate 34 corresponds to the inner wall of the fixed sleeve 25 in the anchor point offset mechanism 2, and the fastening sleeves 31 are connected in cooperation through a clamping assembly.

[0031] In this embodiment, as Figure 7 shown, the clamping assembly includes a mating block 311 and a mating groove 312. Mating blocks 311 are provided on the top and bottom end faces of the fastening sleeve 31, and the mating blocks 311 are evenly distributed along the circumference. A mating groove 312 is provided between the mating blocks 311. When the pressure of the upper top sleeve 33 presses downward, the mating block 311 will be pressed against the inner side of the mating groove 312, so that the plurality of fastening sleeves 31 are cooperatively squeezed, so as to promote the relative squeezing and fixing between the fastening sleeves 31. The fastening sleeve 31 limits the lifting rope 32 inside, so that the whole lifting rope 32 tends to be in a straightened state.

[0032] In this embodiment, the groove width of the mating groove 312 is smaller than the width of the mating block 311, which is convenient for the mating block 311 to be stuck inside the mating groove 312, so as to form mating fixation.

[0033] In this embodiment, as Figure 3 shown, the anchor point offset mechanism 2 includes a fixed seat 21, the fixed seat 21 is fixedly connected to the bottom of the unmanned aerial vehicle 1, a rotating disk 22 is rotatably connected inside the fixed seat 21, a fixed sleeve 25 is slidably connected to the central position of the fixed seat 21, a horizontal groove for restricting the sliding of the fixed sleeve 25 is formed on the fixed seat 21, an extrusion assembly for replacing the attitude in cooperation with the top sleeve 33 is arranged on the top end surface of the fixed sleeve 25, a lifting seat 23 is fixed on the outer side of the top of the fixed sleeve 25, and a reset assembly 24 is installed outside the lifting seat 23.

[0034] In this embodiment, as Figures 3 - 4 shown, the extrusion assembly includes an extrusion block 26 and four connecting rods. The connecting rods penetrate through the top of the fixed sleeve 25 from top to bottom and are connected to the top of the top sleeve 33. An extrusion groove 29 is arranged inside the unmanned aerial vehicle 1 corresponding to the position of the extrusion block 26. The extrusion groove 29 is of a conical structure. When the lifting seat 23 drives the fixed sleeve 25 and the extrusion block 26 to move horizontally, the extrusion groove 29 at the top will limit the extrusion block 26, and the extrusion block 26 drives the top sleeve 33 connected at the bottom.

[0035] In this embodiment, as Figure 6 shown, the reset assembly 24 includes a reset rod and a reset spring. The reset rods are symmetrically arranged on both sides of the lifting seat 23, and both ends of the reset rods are fixedly connected to the rotating disk 22 through clamping blocks. The lifting seat 23 is slidably connected to the reset rods, and the reset spring is arranged between the reset rods and the lifting seat 23.

[0036] In this embodiment, as Figure 5 shown, a plurality of magnetic blocks 28 are uniformly arranged on the outer circumferential end surface of the rotating disk 22, and electromagnets are arranged on the inner side surface of the fixed seat 21 corresponding to the positions of the magnetic blocks 28.

[0037] In this embodiment, the extrusion plate 34 is of an arc plate structure, and both ends of the extrusion plate 34 are connected to the top sleeve 33 and the fastening sleeve 31 by welding.

[0038] In this embodiment, the material of the extrusion plate 34 is 65Mn.

[0039] In this embodiment, the cross section of the rotating disk 22 is of a stepped structure, and a stepped support platform is formed on the inner side surface of the fixed seat 21 corresponding to the rotating disk 22.

[0040] Working principle: When hoisting is required, first start the unmanned aerial vehicle 1. After the unmanned aerial vehicle 1 is at a low altitude, the telescopic cylinder located at the central position inside the unmanned aerial vehicle 1 extends, restricting the extrusion block 26 from moving downward, thereby causing the extrusion block 26 to drive the top sleeve 33 downward. Then, through the cooperation of the mating blocks 311 and the mating grooves 312 between the plurality of fastening sleeves 31 at the bottom, the fastening sleeves 31 are tightened, driving the internal lifting ropes 32 to be tightened. At this time, it is convenient to use the hook 4 to lift the goods. After the installation is completed, the unmanned aerial vehicle 1 ascends in height.

[0041] When rapid startup or rapid commutation is required, the attitude of the drone 1 will change from Figure 8 state to Figure 9 state. At this time, because the weight of the bottom cargo is too large, if the cargo swings greatly under the drive, then after commutation, the cargo will swing back and forth with a large amplitude, which will increase the load of the drone 1 and cause loss of stability. At this time, the magnet 28 loses its magnetic force, and the fixed sleeve 25 and the lifting seat 23 stagnate in the direction opposite to the commutation direction of the drone 1 under the gravity of the cargo lifting. The lifting seat 23 slides in the groove inside the rotating disk 22. At the same time, because the rotating disk 22 rotates inside the fixed seat 21, it can adapt to offsets in different directions (the lifting seat 23 drags the rotating disk 22, and the rotating disk 22 rotates. The groove on the rotating disk 22 will point to the deflected direction). Then at this time, the lifting seat 23 generates an offset relative to the drone 1 (that is, the lifting anchor point generates an offset). While the lifting seat 23 slides, the extrusion block 26 at the top is limited and extruded by the extrusion groove 29, so the extrusion block 26 will extrude the top sleeve 33 downward. Similarly, the fastening sleeves 31 are locked with each other. While the anchor point is offset, the fastening sleeves 31 are locked, avoiding subsequent swinging of the cargo.

[0042] When the cargo is blown by a strong side wind during flight and the cargo actively drives the suspension rope 32 to swing, then at this time, the extrusion plate 34 between the top sleeve 33 and the fastening sleeve 31 is extruded by the inner wall of the lifting seat 23. After extrusion, the arc-shaped extrusion plate 34 is straightened, so the relative distance between the top sleeve 33 and the fastening sleeve 31 becomes larger. At the same time, the effect of extrusion of the fastening sleeve 31 can be achieved, thus avoiding subsequent large swinging of the cargo. At the same time, the extrusion plate 34 is arranged between the top sleeve 33 and the fastening sleeve 31. When it is straightened, it provides a certain buffer using the elasticity of the extrusion plate 34, avoiding instantaneously straightening and causing instant load on the suspension rope 32, improving safety.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large drone for transporting rescue materials, characterized by: It comprises a UAV and a fastening mechanism for hoisting cargo, a hook and an anchor point offset mechanism for adjusting the posture of the fastening mechanism, wherein the anchor point offset mechanism is installed at the center position of the bottom of the UAV, the fastening mechanism is installed at the adjustment position of the anchor point offset mechanism, and the hook is fixed at the bottom of the fastening mechanism; The fastening mechanism includes a top sleeve, which is fixedly connected to the bottom of the anchor point offset mechanism, a sling rope is installed inside the top sleeve, the bottom of the sling rope is fixedly connected to the hook, and a plurality of fastening sleeves are sleeved on the outside of the sling rope. The fastening sleeve and the top sleeve are connected by an extrusion plate, the outside of the extrusion plate corresponds to the inner wall of the fixed sleeve in the anchor point offset mechanism, and the fastening sleeves are connected by a clamping assembly; the anchor point offset mechanism includes a fixing seat, which is fixedly connected to the bottom of the drone, and a rotating disk is rotatably connected inside the fixing seat A fixed sleeve is slidably connected to the center position of the fixed seat, a transverse groove is formed on the fixed seat to limit the sliding of the fixed sleeve, an extrusion component is arranged on the top end surface of the fixed sleeve to cooperate with the top sleeve to change the posture, a hoisting seat is fixed to the outside of the top of the fixed sleeve, and a reset component is installed on the outside of the hoisting seat; the extrusion component includes an extrusion block and four connecting rods, the connecting rod passes through the top of the fixed sleeve from top to bottom and is connected to the top of the top sleeve, an extrusion groove is arranged inside the drone corresponding to the position of the extrusion block, and the extrusion groove has a conical structure.

2. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 1, characterized in that: The clamping assembly comprises a matching block and a matching groove. Matching blocks are arranged on the top and bottom end surfaces of the fastening sleeve, and the matching blocks are evenly distributed along the circumference. Matching grooves are arranged between the matching blocks.

3. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 2, characterized in that: The groove width of the matching groove is smaller than the width of the matching block.

4. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 1, characterized in that: The reset assembly includes a reset rod and a reset spring. The reset rod is symmetrically arranged on both sides of the hanging seat, and both ends of the reset rod are fixed to the rotating disk through a clamping block. The hanging seat is slidably connected to the reset rod, and the reset spring is arranged between the reset rod and the hanging seat.

5. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 4, characterized in that: A plurality of magnetic blocks are evenly arranged on the outer circular end surface of the rotating disk, and an electromagnet is arranged on the inner side surface of the fixing seat corresponding to the position of the magnetic block.

6. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 1, characterized in that: The extrusion plate is an arc-shaped plate structure, and two ends of the extrusion plate are connected to the top sleeve and the fastening sleeve by welding.

7. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 6, characterized in that: The extruded plate is made of 65Mn.

8. The large-scale unmanned aerial vehicle for transporting rescue materials according to claim 1, characterized in that: The cross section of the rotating disk is a stepped structure, and the inner side surface of the fixing seat is formed with a stepped support platform corresponding to the rotating disk.

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