Surveying unmanned aerial vehicle with protection mechanism

Abstract

This utility model discloses a mapping drone with a protective mechanism, relating to the field of drone protection technology, including: a drone body. This utility model prevents direct collisions between the propeller blades and surrounding objects by setting a protective plate around the blades, directly avoiding drone swaying or crashing due to blade damage. An air inlet pipe inflates the airbag driven by the rotating blades, reducing the impact force between the object and the protective plate. After a collision, the protective plate is compressed or stretched by a spring through connecting spherical heads and a hollow strip on its inner side. Because the two connecting spherical heads can deflect at a certain angle on the horizontal plane, the protective plate can buffer the impact force in any horizontal direction. With the action of the airbag and the shock absorber, the vibration transmitted to the drone body after a collision between the protective plate and surrounding objects is minimized, ensuring the stability of the drone body during flight and the accuracy of the mapping data.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) protection technology, specifically to a surveying UAV with a protective mechanism. Background Technology

[0002] Mapping drones, also known as remote sensing drones or drone platforms, are specifically designed for tasks such as geographic information mapping, map making, and land surveys. They collect surface information during flight by carrying high-precision sensors (such as high-definition cameras and lidar), and then process the data to generate maps, 3D models, etc.

[0003] A document with publication number CN221969768U discloses a surveying drone, including a drone body and a surveying camera. The surveying camera is connected to the drone body via a connecting assembly. The connecting assembly includes a connecting plate, a first connecting rod, and a second connecting rod. The surveying camera is disposed on the bottom surface of the connecting plate, and the second connecting rods are disposed at the four corners of the connecting plate. The connecting plate and the second connecting rods are slidable relative to each other. The first end of the first connecting rod is coaxially connected to the second connecting rod, and the second end of the first connecting rod is connected to the drone body. A locking assembly is provided on the side of the connecting plate away from the drone body. This utility model allows the surveying camera to be connected to the drone body via the connecting assembly, thereby enabling the surveying camera to move vertically relative to the drone body. This allows the surveying camera to "extend" into narrow alleys and cave entrances to perform surveying work while the wing portion of the drone body remains stationary.

[0004] The propellers in the aforementioned surveying drones are exposed, just like traditional propellers. When rotating, if there are objects around, such as tree branches, power lines, or buildings, it is inevitable that the propellers will collide with these objects. This can cause minor damage to the propellers, making the drone unstable and causing it to shake, or even cause the drone to crash. Utility Model Content

[0005] The purpose of this invention is to provide a surveying drone with a protective mechanism, which solves the problem that in existing surveying drones with protective mechanisms, the propellers inevitably collide with hard objects when rotating. This can lead to minor damage to the propellers, causing the drone to become unstable and wobbly, or even directly causing the drone to crash.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: This utility model includes: The drone body has four robotic arms mounted on its exterior, and each of the four robotic arms has a propeller at one end. Four protective components are respectively disposed at one end of the four robotic arms. The protective components are used to prevent the blades from colliding with surrounding objects. Each protective component includes a guard, multiple shock absorbers, and a damage prevention component. The guard includes a mounting frame fixed to one end of the robotic arm. A protective plate is disposed above the mounting frame. The mounting frame and the protective plate are connected by multiple shock absorbers. The damage prevention component is disposed outside the protective plate.

[0007] Preferably, the mounting bracket has multiple first mounting slots on its outer surface, and the protective plate has multiple second mounting slots on its inner surface. The stress-relieving component includes connecting ball heads that rotate inside the first and second mounting slots respectively. Hollow strips are fixed to the outer surfaces of the two connecting ball heads, and sliding plates slide inside the two hollow strips. The two sliding plates are fixedly connected to one end of the two hollow strips respectively, and a spring is fixed between the two sliding plates.

[0008] Preferably, the damage protection component includes a support ring frame disposed on the outside of the protective plate and multiple air inlet pipes fixed inside the protective plate, and an airbag is fixed on the outside of the support ring frame.

[0009] Preferably, the airbag is made of nylon or polyamide fiber.

[0010] Preferably, the outer side of the protective plate is provided with a plug groove, a sealing ring is fixed below the support ring frame, multiple grooves are provided above the protective plate, elastic retaining plates are fixed inside the multiple grooves, a thrust plate is fixed above the multiple elastic retaining plates, and multiple central hole buckles are rotatably provided above the support ring frame.

[0011] Preferably, a mapping camera and two support legs are installed on the lower part of the drone body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By installing a protective plate around the propeller blades to prevent direct collisions between the blades and surrounding objects, the drone is prevented from swaying or crashing due to blade damage. The air intake pipe inflates the airbag driven by the rotating blades, reducing the impact force between the object and the protective plate. After the protective plate is impacted, the spring is compressed or stretched by the connecting spherical head and hollow strip on the inner side. Since the two connecting spherical heads can deflect at a certain angle on the horizontal plane, the protective plate can buffer the impact force in any horizontal direction. With the help of the airbag and the shock absorber, the vibration transmitted to the drone body after the protective plate collides with the surrounding objects is reduced to the greatest extent, ensuring the stability of the drone body during flight and the accuracy of the mapping data. Attached Figure Description

[0013] Figure 1This is a front view of Embodiment 1 of this utility model; Figure 2 This is an exploded sectional view of the protective component in this utility model; Figure 3 for Figure 3 Enlarged diagram of section A in the middle; Figure 4 for Figure 3 Enlarged diagram of section B; Figure 5 for Figure 3 Enlarged diagram of section C; Figure 6 This is a schematic diagram of the stress-relieving component in this utility model.

[0014] The numbers in the diagram represent: 1. Drone body; 2. Mapping camera; 3. Robotic arm; 4. Propeller blades; 5. Protective components; 51. Mounting frame; 52. Protective plate; 53. First mounting slot; 54. Second mounting slot; 55. Connecting spherical head; 56. Hollow strip; 57. Sliding plate; 58. Spring; 59. Support ring frame; 510. Air inlet pipe; 511. Airbag; 512. Insertion slot; 513. Sealing ring; 514. Groove; 515. Elastic retaining plate; 516. Thrust plate; 517. Hole buckle plate; 6. Support legs. Detailed Implementation

[0015] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0016] This embodiment provides a technical solution: a surveying drone with a protective mechanism, such as... Figure 1-6 As shown, the drone includes a main body 1, four robotic arms 3 mounted on the outside of the main body 1, and four protective components 5 respectively set at one end of the four robotic arms 3. Each of the four robotic arms 3 is equipped with a propeller 4 at one end. A mapping camera 2 and two support legs 6 are installed below the main body 1.

[0017] The mapping camera 2 is an existing product and technology, and can be equipped with the DJI P1 camera (i.e., DJIP1). This camera integrates a full-frame image sensor and a three-axis gimbal, and supports a variety of fixed-focus lenses, including 24mm, 35mm and 50mm DL mount lenses.

[0018] The protective component 5 is used to prevent the propeller 4 from colliding with surrounding objects and causing damage to the propeller 4. The protective component 5 includes a protective frame, multiple shock absorbers arranged in a ring-shaped equidistant array, and a damage prevention component. The protective frame includes a mounting bracket 51 fixed to one end of the robotic arm 3. A protective plate 52 is provided above the mounting bracket 51. The propeller 4 is placed inside the protective plate 52. The mounting bracket 51 and the protective plate 52 are connected by multiple shock absorbers. After the protective plate 52 is hit by a collision in a certain direction, the impact force on the protective plate 52 can be buffered, thereby reducing the vibration of the UAV body 1. The damage prevention component is set on the outside of the protective plate 52 to prevent the protective plate 52 from being cracked by hard objects and to reduce the vibration of the protective plate 52 when it is hit by a collision. The combination of the protective component and the shock absorber can further ensure the stability of the UAV body 1 during flight.

[0019] The mounting bracket 51 has multiple first mounting slots 53 on its exterior, and the protective plate 52 has multiple second mounting slots 54 on its inner surface. The stress-relieving component includes a connecting ball head 55 that rotates inside the first mounting slot 53 and the second mounting slot 54 respectively. Hollow strips 56 are fixed to the exterior of the two connecting ball heads 55, and the two hollow strips 56 are arranged vertically. Sliding plates 57 slide inside the two hollow strips 56. The two sliding plates 57 are fixedly connected to one end of the two hollow strips 56 respectively. A spring 58 is fixed between the two sliding plates 57. When the spring 58 with the stress-relieving component is at its original length, the blade 4 is located in the middle of the protective plate 52, and the edge of the protective plate 52 is flush with the outer edge of the mounting bracket 51.

[0020] The damage protection components include a support ring frame 59 located on the outside of the protective plate 52 and multiple air inlet pipes 510 fixed inside the protective plate 52. The opening of the air inlet pipe 510 is oriented according to the direction of airflow when the blade 4 rotates. If the airflow is downward, the opening of the air inlet pipe 510 is tilted upward; conversely, if the airflow is upward, the opening of the air inlet pipe 510 is tilted downward, ensuring that the airflow can enter the airbag 511 and inflate it when the blade is working. The airbag 511 is fixed on the outside of the support ring frame 59. The airbag 511 is made of nylon or polyamide fiber. Nylon has high tensile strength, and polyamide fiber has good tear resistance, which can withstand greater pressure when the airbag 511 is inflated.

[0021] The protective plate 52 has an insertion groove 512 on its outer side. A sealing ring 513 is fixed below the support ring frame 59. The sealing ring 513 on the support ring frame 59 is inserted into the insertion groove 512 to support the airbag 511. The protective plate 52 has multiple grooves 514 on its upper side. Each groove 514 has an elastic retaining plate 515 fixed inside. Each elastic retaining plate 515 has a thrust plate 516 fixed above it. Multiple central hole buckles 517 are rotatably mounted on the upper side of the support ring frame 59. Sealing strips are provided on the inner side of the support ring frame 59 near the upper and lower edges. When the support ring frame 59 and the protective plate 52 are assembled, the airbag 511 can be sealed.

[0022] In use: When the drone body 1 drives the mapping camera 2 to conduct mapping, the airflow generated by the rotating propeller 4 enters the airbag 511 through the air inlet 510, inflating the airbag 511. During the subsequent movement of the drone body 1, the propeller 4 is protected by the surrounding protective plate 52 and will not collide with surrounding hard objects (such as branches, buildings, etc.). Surrounding objects will directly contact the airbag 511 on the outside of the protective plate 52. Under the protection of the airbag 511, the impact force transmitted to the protective plate 52 will be reduced. After receiving a certain impact force, the protective plate 52 will undergo a certain displacement, which will carry... When the connecting ball head 55 on the inner side moves, it will cause the hollow strip 56 and sliding plate 57 connected to it to slide, and push or stretch the inner spring 58. The two connecting ball heads 55 in the buffer can deflect at a certain angle on the horizontal plane. Therefore, the protective plate 52 can move in any horizontal direction according to the position of the impact and the direction of the impact force to buffer the collision force. Under the action of the airbag 511 and the buffer, the vibration transmitted to the UAV body 1 after the protective plate 52 collides with the surrounding objects is reduced to the greatest extent, ensuring the stability of the UAV body 1 during flight and the accuracy of the mapping data.

[0023] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A surveying drone with a protective mechanism, characterized in that, include: The main body of the drone (1) is equipped with four mechanical arms (3) on its exterior, and each of the four mechanical arms (3) is equipped with a propeller (4) at one end. Four protective components (5) are respectively disposed at one end of the four robotic arms (3). The protective components (5) are used to prevent the blades (4) from colliding with surrounding objects. The protective components (5) include a protective element, a stress-relieving element and a damage-preventing element. The protective element includes a mounting frame (51) fixed to one end of the robotic arm (3). A protective plate (52) is disposed above the mounting frame (51). The mounting frame (51) and the protective plate (52) are connected by a stress-relieving element. The damage-preventing element is disposed outside the protective plate (52).

2. The surveying drone with a protection mechanism according to claim 1, wherein, The mounting bracket (51) has a first mounting groove (53) on its outside, and the protective plate (52) has a second mounting groove (54) on its inner surface. The stress-relieving component includes a connecting ball head (55) that rotates inside the first mounting groove (53) and the second mounting groove (54) respectively. Hollow strips (56) are fixed to the outside of the two connecting ball heads (55), and sliding plates (57) slide inside the two hollow strips (56). The two sliding plates (57) are fixedly connected to one end of the two hollow strips (56) respectively, and a spring (58) is fixed between the two sliding plates (57).

3. The surveying drone with a protection mechanism according to claim 2, wherein, The damage protection components include a support ring frame (59) disposed on the outside of the protective plate (52) and an air inlet pipe (510) fixed inside the protective plate (52). An airbag (511) is fixed on the outside of the support ring frame (59).

4. The surveying drone with a protection mechanism according to claim 3, wherein, The airbag (511) is made of nylon or polyamide fiber.

5. The surveying drone with a protection mechanism according to claim 4, wherein, The protective plate (52) has an insertion groove (512) on its outer side. A sealing ring (513) is fixed below the support ring frame (59). A groove (514) is opened above the protective plate (52). An elastic plate (515) is fixed inside the groove (514). A thrust plate (516) is fixed above the elastic plate (515). A central hole buckle plate (517) rotates above the support ring frame (59).

6. The surveying drone with a protection mechanism according to claim 1, wherein, The drone body (1) is equipped with a mapping camera (2) and two support legs (6) on its lower part.

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