Unmanned aerial vehicle with automatic protection type folding propellers

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle with automatic protection type folding propellers, which comprises an unmanned aerial vehicle, propellers, a fixed plate, a cable descending winch and the like, a plurality of propellers are mounted on the unmanned aerial vehicle; the unmanned aerial vehicle is connected with a fixing plate; and a cable descending winch is mounted on the fixed plate. According to the unmanned aerial vehicle, goods are wrapped and protected through the supporting rod and the first air bag which are used for providing landing supporting in the take-off and landing process of the unmanned aerial vehicle in cooperation with the micro air pump, the shielding part and the telescopic pipe, no extra box needs to be arranged, the transportation weight of the unmanned aerial vehicle is increased, and four propellers gather towards the middle of the unmanned aerial vehicle at the same time; the gravity center of the unmanned aerial vehicle is kept at the center position, the unmanned aerial vehicle falls downwards in a relatively vertical posture, it is avoided that the damageable part of the unmanned aerial vehicle directly collides with the ground due to inclined falling of the unmanned aerial vehicle, and the protection effect on the damageable part of the unmanned aerial vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a UAV with an automatically protected folding propeller. Background Technology

[0002] When cargo-carrying drones are used to lift goods, an additional waterproof box is usually added to protect the goods from getting wet in the rain or snow during transportation. However, adding an extra box increases the overall weight of the drone, resulting in a reduction in the weight of the cargo that can be transported.

[0003] When drones are transporting goods, although the flight path is assessed in advance by humans to ensure that the drones can return smoothly, the drone batteries will age after long-term use. At the same time, the drone's power consumption is affected by the environment during flight. For example, in strong headwinds or low temperatures, the drone's power consumption will increase significantly, causing the actual power consumption to far exceed the expectation. Therefore, there is a possibility that the drone will run out of power and crash during the return process.

[0004] In summary, this application proposes a drone with an automatically protected folding propeller, which improves the aforementioned technical problems. Summary of the Invention

[0005] To overcome the drawback that during the return flight of a drone, the drone's power consumption is affected by the environment, resulting in actual power consumption far exceeding expectations and the drone crashing due to power depletion, this invention provides a drone with an automatically protective folding propeller.

[0006] The technical solution is as follows: A drone with an automatically protected folding propeller, comprising a drone, propellers, a fixed plate, and a rappelling winch; the drone is equipped with several propellers; the drone is connected to the fixed plate; the fixed plate is equipped with the rappelling winch; it also includes a gas generator, support rods, an airbag, a telescopic tube, and a drive assembly; the fixed plate is connected to the drive assembly; the fixed plate is rotatably connected to several support rods, and the drive assembly is used to drive the support rods to rotate; each support rod is designed as a hollow structure, and one half of the support rod is connected to a gas generator; the other half of the support rod is connected to a miniature air pump; each support rod is fixedly connected to a telescopic tube, the other end of which can slide on the corresponding support rod; all telescopic tubes are connected to an airbag; the airbag has several shielding parts, the shielding parts are made of elastic deformable material, and the shielding parts are connected to the corresponding telescopic tubes.

[0007] Furthermore, the aforementioned UAV with an automatically protected folding propeller also includes a curved block; a curved block for improving stability is fixed to one side of the airbag.

[0008] Furthermore, in the aforementioned UAV with an automatic protective folding propeller, airbag one, the curved block, and airbag two are all made of highly elastic and wear-resistant material.

[0009] Furthermore, the aforementioned UAV with an automatically protected folding propeller also includes a servo motor and a connecting block; the UAV has several grooves, each groove being perpendicular to the adjacent propeller; the UAV has several connecting parts, each connecting part being located below the adjacent groove; each connecting part is rotatably connected to a connecting block, and each connecting block is fixedly connected to the adjacent propeller; each connecting part is fixedly connected to a servo motor, and the output shaft of the servo motor is fixedly connected to the adjacent connecting block.

[0010] Furthermore, the aforementioned UAV with an automatic protective folding propeller also includes an airbag II; the airbag II is fixedly attached to the lower side of the fixed plate.

[0011] Furthermore, in the aforementioned UAV with an automatically protective folding propeller, the second airbag is equipped with a protective section.

[0012] Furthermore, in the aforementioned UAV with an automatically protected folding propeller, the mounting plate is detachably connected to the UAV.

[0013] Furthermore, in the aforementioned UAV with an automatically protected folding propeller, a rotating part is provided between the UAV and each connecting part.

[0014] Furthermore, the aforementioned drone with an automatically protective folding propeller also includes a buffer bar; each support bar is equipped with a buffer bar for supporting cargo.

[0015] Furthermore, in the aforementioned UAV with an automatically protected folding propeller, each buffer rod is rotatably connected to the adjacent support rod via a torsion spring.

[0016] The beneficial effects are as follows: The present invention realizes that the support rod and airbag used to provide landing support for the drone take-off and landing process, together with the micro air pump, shield and telescopic tube, can also be used to wrap and protect the cargo, without the need to set up an additional box and increase the weight of the drone transport.

[0017] The gas generated by the gas generator is quickly filled into the airbag, shield and telescopic tube through the support rod. The fixed plate, airbag, shield and telescopic tube are combined to form a floating plate, which makes the drone float on the water surface, preventing the drone from sinking and protecting the drone.

[0018] By setting up curved blocks, the curved blocks flip upwards with the airbag and wrap around the airbag, forming a ring around the fixing plate, airbag, shield, and telescopic tube, reducing the possibility of the drone flipping over after crashing into the water and improving the drone's floating stability.

[0019] By simultaneously converging the four propellers towards the center of the drone, the drone's center of gravity is kept in the center, allowing it to fall downwards in a relatively vertical posture. This prevents the drone from falling at an angle and causing its vulnerable parts to directly impact the ground, thus improving the protection of the drone's vulnerable parts. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the UAV with an automatically protected folding propeller according to the present invention.

[0021] Figure 2 This is a cross-sectional view of the airbag 1, telescopic tube and airbag 2 of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the cable-lowering winch, gas generator, and support rod assembly of the present invention.

[0023] Figure 4 This is a cross-sectional view of the support rod of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the servo motor and connecting block combination of the present invention;

[0025] Figure 6 This is a diagram showing the first retracted state of the propeller according to the present invention;

[0026] Figure 7 This is a diagram showing the second retracted state of the propeller according to the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the buffer rod of the present invention.

[0028] Parts and their numbers in the diagram: 1-UAV, 1001-Groove, 1002-Connector, 1003-Rotating part, 2-Propeller, 3-Fixing plate, 4-Railing winch, 4001-Ring, 5-Gas generator, 6-Support rod, 7-Airbag one, 7001-Shielding part, 8-Telescopic tube, 101-Fixing block, 102-Drive motor, 103-Bending block, 201-Servo motor, 202-Connector block, 203-Airbag two, 20301-Protective part, 301-Buffer rod. Detailed Implementation

[0029] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] A drone with automatically protected folding propellers, such as Figures 1-7As shown, it includes a drone 1, propellers 2, a fixed plate 3, and a cable winch 4; the drone 1 is equipped with four propellers 2; the drone 1 is connected to the fixed plate 3; the drone 1 is equipped with an acceleration sensor and a control module; the fixed plate 3 is equipped with a cable winch 4; the cable winch 4 is equipped with a buckle 4001 for lifting cargo.

[0032] It also includes a gas generator 5, support rods 6, airbag 7, telescopic tubes 8, and a drive assembly; the fixed plate 3 is connected to the drive assembly; the fixed plate 3 is rotatably connected to four support rods 6 arranged in a circular array, and the drive assembly is used to drive the support rods 6 to rotate; each support rod 6 is set as a hollow structure, and one half of the support rod 6 is connected to the gas generator 5; the other half of the support rod 6 is connected to a micro air pump; each support rod 6 is fixedly connected to a telescopic tube 8, and the other end of the telescopic tube 8 can slide on the corresponding support rod 6; all telescopic tubes 8 are connected to the airbag 7; the airbag 7 is provided with several shielding parts 7001, the shielding parts 7001 are made of elastic deformable material, and the shielding parts 7001 are connected to the corresponding telescopic tubes 8.

[0033] The drive assembly includes a fixed block 101 and a drive motor 102; four fixed blocks 101 are fixedly connected to the fixed plate 3; each fixed block 101 has a drive motor 102 fixedly connected inside it, and the output shaft of each drive motor 102 is fixedly connected to the adjacent support rod 6.

[0034] It also includes a curved block 103; the curved block 103 is fixedly attached to the lower side of the airbag 7.

[0035] Airbag 1 (7), curved block 103, and airbag 2 (203) are all made of highly elastic and wear-resistant material.

[0036] It also includes a servo motor 201 and a connecting block 202; the UAV 1 is provided with four grooves 1001, and each groove 1001 is perpendicular to the adjacent propeller 2; the UAV 1 is provided with four connecting parts 1002, and each connecting part 1002 is located below the adjacent groove 1001; each connecting part 1002 is rotatably connected to a connecting block 202, and each connecting block 202 is fixedly connected to the adjacent propeller 2; each connecting part 1002 is fixedly connected to a servo motor 201, and the output shaft of the servo motor 201 is fixedly connected to the adjacent connecting block 202.

[0037] It also includes airbag 203; airbag 203 is fixedly attached to the lower side of the fixing plate 3.

[0038] The second airbag 203 is equipped with a protective part 20301, which covers and protects the buckle 4001 of the cable descent winch 4 to prevent the buckle 4001 of the cable descent winch 4 from hitting the ground first when the UAV 1 falls, thus preventing damage.

[0039] The mounting plate 3 and the drone 1 are designed to be detachably connected, which makes it easy for the drone 1 to be equipped with other functional modules.

[0040] A rotating part 1003 is provided between the drone 1 and each connecting part 1002. When storage is required, the rotating part 1003 drives the connecting part 1002 and the propeller 2 to rotate on the drone 1, so as to adjust the storage state of the propeller 2 to adapt to different placement spaces.

[0041] The working steps of this embodiment are as follows:

[0042] First, the fixed plate 3, support rod 6 and airbag 7 installed on the lower side of the drone 1 replace the traditional support base of the drone 1 to provide landing support for the drone 1 during take-off and landing. The airbag 7 provides soft support for the drone 1 during landing, reducing the impact of the drone 1 on the ground when landing.

[0043] When goods need to be transported, the goods are passed through the gap between adjacent support rods 6 and suspended on the buckle 4001. Then, the drone 1 is controlled to take off. During the flight, the operator observes the weather conditions through the camera on the drone 1. If a sudden downpour occurs, the operator remotely controls the micro air pump on the support rod 6 to start based on the data transmitted by the camera through the control module on the drone 1. The micro air pump delivers gas through the support rod 6 to the airbag 7, the shield 7001, and the telescopic tube 8 connected to it. The airbag 7 and the shield 7001 gradually inflate, and the telescopic tube 8 moves upward along the support rod 6. The shield 7001 follows the telescopic tube 8 and extends upward until the top of all the telescopic tubes 8 contacts the lower surface of the fixed plate 3, at which point the micro air pump stops working. At this time, all the telescopic tubes 8 and the shielding part 7001 work together to wrap and protect the goods on the buckle 4001, preventing rainwater from contaminating or damaging the packaging carton. In this way, the support rod 6 and airbag 7, which provide landing support for the take-off and landing process of the UAV 1, together with the micro air pump, shielding part 7001 and telescopic tubes 8, are also used to wrap and protect the goods. There is no need to set up an additional box, which would increase the transport weight of the UAV 1. It should be noted that after the airbag 7, telescopic tubes 8 and shielding part 7001 are deployed, they combine to form a frustum shape. Compared with the shape of the goods themselves, such as a cuboid or other irregular shape, the arc-shaped shield can make the airflow flow more smoothly over the surface of the object, thereby reducing wind resistance and improving the flight stability of the UAV 1.

[0044] Once the drone 1 reaches its destination, it is controlled to descend slowly until it is 4-5 meters above the ground. The drone 1 then hovers and the hook 4001 of the rappelling winch 4 is controlled to slowly move the cargo downwards until it reaches the ground. After the recipient takes the cargo, the rappelling winch 4 is controlled to slowly retract the hook 4001 upwards. Then, the drone 1 is controlled to gradually ascend and return to its starting point.

[0045] During the return journey of Drone 1, if Drone 1 runs out of power and cannot return smoothly, Drone 1 will fall directly. To reduce the damage to Drone 1 after the fall, the camera on Drone 1 observes the environment below. If Drone 1 falls into a lake or pond or other water-containing area, the internal acceleration sensor is triggered during the fall. The control module, based on the data monitored by the camera and the signal feedback from the acceleration sensor, controls the drive motor 102 to rotate the adjacent support rod 6 upward. The airbag 7, the shield 7001, and the telescopic tube 8 rotate upward together and are stretched and deformed until all support rods 6 are parallel to the fixed plate 3. The drive motor 102 stops working, and the control module starts the gas generator 5, causing the gas generator 5 to quickly fill the airbag 7, the shield 7001, and the telescopic tube 8 through the support rods 6. At this time, the fixed plate 3, the airbag 7, the shield 7001, and the telescopic tube 8 together form a... The float, along with the airbag 7, shield 7001, and telescopic tube 8, will keep the drone 1 afloat on the water surface, preventing it from sinking. Simultaneously, by setting up a curved block 103, which flips upwards with the airbag 7 and wraps around it, the fixed plate 3, airbag 7, shield 7001, and telescopic tube 8 are encircled, reducing the likelihood of the drone 1 capsizing after falling onto the water and improving its floating stability. It should be noted that during normal use, the inflation rate of the micro-air pump cannot inflate the airbag 7, shield 7001, and telescopic tube 8 to their maximum extent with sufficient gas pressure. Therefore, the purpose of introducing gas into the airbag 7, shield 7001, and telescopic tube 8 through the gas generator 5 is to ensure sufficient pressure within them, guaranteeing that the airbag 7, shield 7001, and telescopic tube 8 can keep the drone 1 afloat.

[0046] If the ground is below the drone 1 when it crashes, considering the wind resistance and changes in the center of gravity during the fall, the drone 1 will sway to varying degrees, making it difficult to maintain a stable attitude. This could cause the vulnerable parts (propellers) of the drone 1 to hit the ground, or even cause the drone 1 to flip after the fall, exacerbating the damage. To solve this problem, when the camera on the drone 1 detects that the ground is below the drone 1 when it crashes, the control module controls the drive motor 102 to rotate the adjacent support rod 6 upward based on the data monitored by the camera and the signal fed back by the accelerometer. The support rod 6 rotates the airbag 7, the shield 7001, and the telescopic tube 8 together to form an inverted frustum shape. At the same time, the control module controls the servo motor 201 to rotate the adjacent connecting block 202 and the propeller 2 upward. Figure 6As shown, the four propellers 2 converge towards the center of the drone 1 simultaneously. At this time, the support rod 6, airbag 7, shield 7001, and telescopic tube 8 together form an inverted frustum shape to protect the drone 1. The four propellers 2 converge towards the center of the drone 1, keeping the center of gravity of the drone 1 in the center position. The drone 1 falls downward in a relatively vertical posture, avoiding the drone 1 falling at an angle and causing the vulnerable parts (propellers) of the drone 1 to directly impact the ground, thus improving the protection effect on the vulnerable parts of the drone 1. When the drone 1 falls downward in a relatively vertical posture, the airbag 203 provides cushioning protection for the drone 1. Even if the drone 1 tumbles after colliding with the ground after falling, it can still be protected by the inverted frustum shape formed by the support rod 6, airbag 7, shield 7001, and telescopic tube 8.

[0047] It should be noted that after the recipient takes the goods, the rappelling winch 4 will control the buckle 4001 to slowly retract upwards until the buckle 4001 gradually enters the upper middle position inside the protective part 20301. Thus, after the UAV 1 falls, the airbag 203 will hit the ground before the buckle 4001, preventing the buckle 4001 from being exposed under the airbag 203 and exacerbating the instability of the UAV 1 after falling. At the same time, it also prevents the buckle 4001 from being damaged after being hit by the ground.

[0048] When drone 1 is not in use, the mounting plate 3 can be removed, and then the process of folding and storing the propeller 2 can be repeated as described above. Figure 6 As shown, considering that different storage spaces have different layouts, for example, when the vertical space is greater than the horizontal space, the user can choose to rotate the rotating part 1003 to make the blades of the propeller 2 vertical, and then control the servo motor 201 to drive the propeller 2 to rotate towards the center of the UAV 1, as shown. Figure 7 As shown, users can adjust the storage state of the propeller 2 according to different storage spaces, further improving the ease of use of the drone 1.

[0049] It should be noted that the rotating part 1003 is locked during the use of the UAV 1 to prevent the propeller 2 from running unstablely during the use of the UAV 1. The locking state between the rotating part 1003 and the UAV 1 can be achieved by bolts or existing self-locking structures.

[0050] Example 2

[0051] Based on Example 1, such as Figure 8 As shown, it also includes a buffer rod 301; a buffer rod 301 is installed on each support rod 6.

[0052] Each buffer bar 301 is rotatably connected to the adjacent support bar 6 via a torsion spring. When the drone 1 tumbles after crashing, the buffer bar 301 will hit the ground before the airbag 7, the shield 7001 and the telescopic tube 8. This further improves the buffering effect on the drone 1. At the same time, the presence of the buffer bar 301 will increase the resistance between the drone 1 and the ground, which will help the drone 1 stop tumbling quickly and reduce its damage.

[0053] The working process of this embodiment is as follows:

[0054] Some goods are usually packaged in plastic bags. During hoisting, the pull tabs of the plastic bags are typically attached to the buckle 4001. However, the pull tabs of plastic bags are usually thin and have limited material strength. With the vibrations generated by the drone 1 during flight, the pull tabs of the plastic bags are prone to tearing, causing the goods to detach from the buckle 4001, posing a safety risk. To solve this problem, a buffer rod 301 is used to support the bottom of the goods, thereby distributing the weight of the goods evenly across the buckle 4001 and the support rod 6. Compared to relying solely on the pull tabs of the plastic bags attached to the buckle 4001, this greatly reduces the risk of the pull tabs tearing, making the goods more stable during hoisting and reducing losses and safety hazards caused by falling goods. It should be noted that when it is necessary to hoist the goods from the air to the ground, simply control the drive motor 102 to rotate the support rod 6 and the buffer rod 301 upwards by an appropriate amount, so that the buffer rod 301 can avoid the goods.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An unmanned aerial vehicle with an automatically protected folding propeller, comprising an unmanned aerial vehicle (1), a propeller (2), a fixing plate (3) and a rope-dropping winch (4); the unmanned aerial vehicle (1) is equipped with a plurality of propellers (2); the unmanned aerial vehicle (1) is connected to a fixing plate (3); the rope-dropping winch (4) is installed on the fixing plate (3); the characteristic of ... The invention also comprises a gas generator (5), a support rod (6), an airbag (7), a telescopic tube (8) and a driving assembly; the fixed plate (3) is connected to the driving assembly; the fixed plate (3) is rotatably connected to a plurality of support rods (6), and the driving assembly is used to drive the support rods (6) to rotate; each support rod (6) is arranged to be a hollow structure, and half of the support rods (6) are connected to the gas generator (5); the other half of the support rods (6) are connected to a micro air pump; each support rod (6) is fixedly connected to a telescopic tube (8), and the other end of the telescopic tube (8) can slide on the corresponding support rod (6); all the telescopic tubes (8) are commonly connected to the airbag (7); a plurality of shielding parts (7001) are arranged on the airbag (7), the shielding parts (7001) are made of elastic deformation material, and the shielding parts (7001) are connected to the corresponding telescopic tubes (8).

2. The UAV with automatic protective folding propeller according to claim 1, characterized in that: It also includes a bending block (103); the bending block (103) for improving stability is fixedly connected to the lower side of the airbag 1 (7).

3. The UAV with automatic protection folding propeller according to claim 1, characterized in that: The airbag 1 (7), the bending block (103) and the airbag 2 (203) are all made of highly elastic and wear-resistant material.

4. The UAV with automatic protection folding propeller according to claim 1, characterized in that: The drone (1) also includes a servo motor (201) and a connecting block (202); a plurality of grooves (1001) are provided on the drone (1), and each groove (1001) is perpendicular to an adjacent propeller (2); a plurality of connecting parts (1002) are provided on the drone (1), and each connecting part (1002) is located below an adjacent groove (1001); each connecting part (1002) is rotatably connected to a connecting block (202), and each connecting block (202) is fixedly connected to an adjacent propeller (2); each connecting part (1002) is fixedly connected to a servo motor (201), and an output shaft of the servo motor (201) is fixedly connected to an adjacent connecting block (202).

5. The UAV with automatic protection folding propeller according to claim 1, characterized in that: It also includes a second airbag (203); the second airbag (203) is fixedly connected to the lower side of the fixing plate (3).

6. The UAV with automatic protection folding propeller according to claim 5, characterized in that: A protective portion (20301) is provided on the airbag 2 (203).

7. The UAV with automatic protection folding propeller according to claim 1, characterized in that: The fixing plate (3) and the drone (1) are arranged to be detachably connected.

8. The UAV with automatic protection folding propeller according to claim 4, characterized in that: A rotating part (1003) is provided between the drone (1) and each connecting part (1002).

9. The UAV with automatic protection folding propeller according to claim 1, characterized in that: It also includes a buffer rod (301); each support rod (6) is equipped with a buffer rod (301) for supporting goods.

10. The UAV with automatic protection folding propeller according to claim 9, characterized in that: Each buffer rod (301) is rotationally connected to an adjacent support rod (6) via a torsion spring.

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