Large unmanned aerial vehicle for conveying relief goods

Abstract

The large unmanned aerial vehicle comprises an unmanned aerial vehicle body, a fastening mechanism used for hoisting goods, a hook and an anchor point deviation mechanism used for adjusting the posture of the fastening mechanism, the anchor point deviation mechanism is installed at the center position of the bottom of the unmanned aerial vehicle body, and the fastening mechanism is installed at the adjusting position of the anchor point deviation mechanism. The hook is fixed at the bottom of the fastening mechanism; the fastening mechanism comprises a top sleeve, the top sleeve is fixedly connected to the bottom of the anchor point deviation mechanism, a lifting rope is installed in the top sleeve, a hook is fixedly connected to the bottom of the lifting rope, the lifting rope is sleeved with a plurality of fastening sleeves, the fastening sleeves are connected with the top sleeve through extrusion plates, and the outer portions of the extrusion plates correspond to the inner walls of fixing sleeves in the anchor point deviation mechanism. The technical problem that the safety of the unmanned aerial vehicle is affected due to the fact that goods are shaken by crosswind in the rapid reversing and flying process of the unmanned aerial vehicle is solved.

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; 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, and a hook is fixed to the bottom of the lifting rope. Several fastening sleeves are sleeved on the outside of the lifting 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. The fastening sleeves are connected by a snap-on assembly.

[0006] Furthermore, the snap-on assembly includes 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.

[0007] Furthermore, the groove width of the matching groove is smaller than the width of the matching block.

[0008] Furthermore, 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 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 provided on the top end face of the fixed sleeve to cooperate with the top sleeve to change its posture, a lifting seat is fixed to the outer side of the top of the fixed sleeve, and a reset component is installed on the outside of the lifting seat.

[0009] Furthermore, the extrusion assembly includes an extrusion block and four connecting rods. The connecting rods penetrate 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 at a position corresponding to the extrusion block, and the extrusion groove has a conical structure.

[0010] Furthermore, 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 fixedly connected 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.

[0011] Furthermore, 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.

[0012] Furthermore, 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.

[0013] Furthermore, the extruded plate is made of 65Mn.

[0014] Furthermore, the cross section of the rotating disk is a stepped structure, and a stepped support platform is formed on the inner side surface of the fixed seat corresponding to the rotating disk.

[0015] 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

[0016] 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.

[0017] 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; 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; 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; 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; 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; 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; 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; 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; Fig. 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.

[0018] In the figure: 1. UAV; 2. anchor point offset mechanism; 3. fastening mechanism; 4. hook; 21. fixing seat; 22. rotating disk; 23. lifting seat; 24. reset assembly; 25. fixing sleeve; 26. extrusion block; 27. limiting clamp ring; 28. magnetic block; 29. ​​extrusion groove; 31. fastening sleeve; 32. lifting rope; 33. top sleeve; 34. extrusion plate; 311. matching block; 312. matching groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] An embodiment of a large unmanned aerial vehicle for transporting rescue materials according to the present invention is as follows: Figures 1 to 9 As shown, it includes a drone 1 and a fastening mechanism 3 for hoisting cargo, a hook 4, and an anchor point offset mechanism 2 for adjusting the posture of the fastening mechanism 3. The anchor point offset mechanism 2 is installed at the center of the bottom of the drone 1, the fastening mechanism 3 is installed at the adjustment position of the anchor point offset mechanism 2, and the hook 4 is fixed at the bottom of the fastening mechanism 3; The fastening mechanism 3 includes a top sleeve 33, which is fixedly connected to the bottom of the anchor point offset mechanism 2. A lifting rope 32 is installed inside the top sleeve 33, and a hook 4 is fixedly connected to the bottom of the lifting rope 32. A plurality of fastening sleeves 31 are sleeved on the outside of the lifting rope 32. The fastening sleeve 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. The fastening sleeves 31 are connected by a snap-on assembly.

[0021] In this embodiment, if Figure 7 As shown, the snap-on assembly includes a matching block 311 and a matching groove 312. Matching blocks 311 are provided on the top and bottom end surfaces of the fastening sleeve 31, and the matching blocks 311 are evenly distributed along the circumference. Matching grooves 312 are provided between the matching blocks 311. When the upper top sleeve 33 is pressed downward by pressure, the matching blocks 311 will be squeezed on the inner side of the matching groove 312, so that the multiple fastening sleeves 31 are matched and squeezed, thereby promoting the relative squeezing and fixing of the fastening sleeves 31, and the fastening sleeve 31 limits the internal suspension rope 32, so that the suspension rope 32 tends to be straightened as a whole.

[0022] In this embodiment, the width of the matching groove 312 is smaller than the width of the matching block 311 , so that the matching block 311 can be easily stuck inside the matching groove 312 , thereby forming a matching fixation.

[0023] In this embodiment, if Figure 3 As shown, the anchor point offset mechanism 2 includes a fixed seat 21, which is fixedly connected to the bottom of the drone 1. A rotating disk 22 is rotatably connected inside the fixed seat 21. A fixed sleeve 25 is slidably connected to the center position of the fixed seat 21. A transverse groove for limiting the sliding of the fixed sleeve 25 is formed on the fixed seat 21. An extrusion component for cooperating with the top sleeve 33 to change the posture is arranged on the top end surface of the fixed sleeve 25. A lifting seat 23 is fixed to the outer side of the top of the fixed sleeve 25, and a reset component 24 is installed on the outside of the lifting seat 23.

[0024] In this embodiment, if Figure 3-4 As shown, the extrusion assembly includes an extrusion block 26 and four connecting rods. The connecting rod passes through the top of the fixed sleeve 25 from top to bottom and is connected to the top of the top sleeve 33. An extrusion groove 29 is arranged inside the drone 1 at the position corresponding to the extrusion block 26. The extrusion groove 29 has 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.

[0025] In this embodiment, if Figure 6 As shown, the reset assembly 24 includes a reset rod and a reset spring. The reset rod is symmetrically arranged on both sides of the hanging seat 23, and both ends of the reset rod are fixedly connected to the rotating disk 22 through a clamping block. The hanging seat 23 is slidably connected to the reset rod, and the reset spring is arranged between the reset rod and the hanging seat 23.

[0026] In this embodiment, if Figure 5 As shown, a plurality of magnetic blocks 28 are evenly arranged on the outer circumferential end surface of the rotating disk 22 , and an electromagnet is arranged on the inner side surface of the fixing seat 21 at the position corresponding to the magnetic blocks 28 .

[0027] In this embodiment, the extrusion plate 34 is an arc-shaped plate structure, and two ends of the extrusion plate 34 are connected to the top sleeve 33 and the fastening sleeve 31 by welding.

[0028] In this embodiment, the extruded plate 34 is made of 65Mn.

[0029] In this embodiment, the cross section of the rotating disk 22 is a stepped structure, and a stepped support platform is formed on the inner side surface of the fixing seat 21 corresponding to the rotating disk 22 .

[0030] Working principle: when lifting is needed, start the drone 1 first, and when the drone 1 is at a low altitude, the telescopic cylinder located in the center of the drone 1 extends to limit the extrusion block 26 downward, thereby prompting the extrusion block 26 to drive the top sleeve 33 downward, and the several fastening sleeves 31 at the bottom are matched through the matching block 311 and the matching groove 312, so that the fastening sleeve 31 is tightened, driving the internal lifting rope 32 to be tightened, and it is convenient to use the hook 4 to lift the goods. After the installation is completed, the drone 1 is raised.

[0031] When a quick start or quick change of direction is required, the attitude of the drone 1 will be changed by Figure 8 The status changes to Fig. 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 the reversal, the cargo will swing back and forth with a large amplitude, which will increase the load of the drone 1 and lose stability. At this time, the magnetic block 28 loses its magnetic force, and the fixed sleeve 25 and the lifting seat 23 stagnate in the opposite direction of the reversal of the drone 1 under the cargo lifting gravity. 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 the offset in different directions (the lifting seat 23 drags the rotating disk 22, the rotating disk 22 rotates, and the groove on the rotating disk 22 will point to the direction of deflection). At this time, the lifting seat 23 is offset relative to the drone 1 (that is, the lifting anchor point is offset). While the lifting seat 23 slides, the extrusion block 26 on the top is limited and squeezed by the extrusion groove 29, and the extrusion block 26 will squeeze the top sleeve 33 downward. Similarly, the fastening sleeves 31 are locked with each other, and the fastening sleeves 31 are locked while the anchor point is offset, thereby avoiding the swing of subsequent cargo.

[0032] When the cargo is blown by a strong side wind during flight, the cargo actively drives the sling rope 32 to swing. At this time, the extrusion plate 34 between the top sleeve 33 and the fastening sleeve 31 is squeezed by the inner wall of the lifting seat 23. After the extrusion, the extrusion plate 34 with an arc structure is straightened, and the relative distance between the top sleeve 33 and the fastening sleeve 31 becomes larger. At the same time, the effect of squeezing the fastening sleeve 31 can be achieved, thereby avoiding subsequent large swings of the cargo. At the same time, the extrusion plate 34 is set between the top sleeve 33 and the fastening sleeve 31. When straightening, the elasticity of the extrusion plate 34 is used to provide a certain buffer to avoid instantaneous straightening causing instantaneous load on the sling rope 32, thereby improving safety.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should 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 lifting rope is installed inside the top sleeve, and the bottom of the lifting rope is fixedly connected to the hook. A plurality of fastening sleeves are sleeved on the outside of the lifting 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. The fastening sleeves are connected by a snap-on assembly.

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 anchor point offset mechanism includes a fixing seat, which is fixedly connected to the bottom of the drone, a rotating disk is rotatably connected inside the fixing seat, a fixing sleeve is slidably connected to the center position of the fixing seat, a transverse groove is formed on the fixing seat to limit the sliding of the fixing sleeve, an extrusion component is arranged on the top end surface of the fixing sleeve to cooperate with the top sleeve to change its posture, a hanging seat is fixed to the outer side of the top of the fixing sleeve, and a reset component is installed on the outside of the hanging seat.

5. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 4, characterized in that: The extrusion assembly includes an extrusion block and four connecting rods. The connecting rods penetrate 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 at a position corresponding to the extrusion block, and the extrusion groove has a conical structure.

6. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 5, 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.

7. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 6, 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 blocks.

8. The 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.

9. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 8, characterized in that: The extruded plate is made of 65Mn.

10. A large-scale unmanned aerial vehicle for transporting rescue materials according to claim 4, 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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