Surveying and mapping unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses a surveying and mapping unmanned aerial vehicle which comprises an unmanned aerial vehicle body, a supporting frame is fixedly connected to the front portion of the unmanned aerial vehicle body, a fixing shell is fixedly connected to the inner wall of the unmanned aerial vehicle body, a camera is fixedly connected to the inner wall of the fixing shell, and a protection plate is slidably connected to the inner wall of the fixing shell. The left side of the fixing shell is fixedly connected with a chamfering block, and the inner wall of the chamfering block is slidably connected with a sliding rod through a spring, so that dust can be prevented from being attached to the surface of a lens of the camera to influence the imaging definition, and the positions of the protection plate and the groove plate can be fixed; therefore, the stability of the protection plate in the using process can be guaranteed, the stability in the surveying and mapping process can be improved, and the situation that the protection plate falls and resets in the surveying and mapping process due to external factors, and surveying and mapping of the camera are affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a surveying and mapping UAV. Background Art

[0002] A surveying and mapping drone is an intelligent surveying and mapping equipment that integrates drone platforms, sensor payloads, navigation control, and data processing technologies. With its advantages of high maneuverability, high precision, and low cost, it has become one of the core tools for modern geographic information data collection.

[0003] The patent with publication number CN211919022U relates to a surveying and mapping UAV, comprising a fuselage, a cabin provided in the middle of the fuselage, a door provided at the bottom of the cabin and a first driving device for driving the door to rotate, one side of the door is hinged to the bottom end of the cabin side wall, the first driving device is fixedly mounted on the bottom of the cabin side wall, the first driving device is connected to the door drivingly, the upper side wall of the cabin is provided with a connecting rod, the connecting rod is connected to the upper side wall of the cabin through a seat bearing, the bottom end of the connecting rod is provided with a collection device and a driving device for driving the collection device A second driving device for lifting is arranged, and the fixed end of the second driving device is fixedly connected to the bottom end of the connecting rod. The surveying and mapping UAV of the device has the function of protecting the first driving device, the second driving device, the third driving device and the acquisition device, and reducing the dust falling into the lens of the acquisition device. However, when the protective cover of the device is opened for surveying, the connection of the protective cover is prone to too small resistance, which may easily lead to the vibration generated by the drone itself during the flight surveying process, causing the protective cover to close and block the camera, thereby affecting the normal surveying and mapping of the device. Therefore, a surveying and mapping UAV is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a surveying and mapping UAV in response to the above-mentioned deficiencies in the prior art.

[0005] The cam is fixedly mounted on a support frame, and the inner wall of the support frame is fixedly connected to the support frame, ... slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame is slidably connected to the support frame, the inner wall of the support frame It is connected with a rounded corner bar, and when terrain mapping is required, the camera can be flown into the air, thereby being able to obtain terrain data of a large area in the most efficient way, which can greatly shorten the time of field operations and is especially suitable for areas that are difficult to reach by manpower, such as mountainous areas and deserts. It can prevent the lens from being scratched or broken due to collision or scratching, and ensure that the optical performance is not damaged, so as to ensure clarity during the mapping process. The inner wall of the fixed block 1 is fixedly connected to the circumferential surface of the sliding rod, and the protective plate will be used to protect the camera from dust. The groove plate will push the rounded corner bar to move during operation, and the rounded corner bar will limit the groove plate, and at the same time, it can also prevent dust from adhering to the lens surface of the camera and affecting the imaging clarity. The position of the protective plate and the groove plate can be fixed to ensure the stability of the protective plate during use, so as to improve the stability during the mapping process and prevent the protective plate from falling and resetting due to external factors during mapping, thereby affecting the mapping of the camera.

[0006] The cam is fixedly mounted on the rear of the vehicle and is secured to the chassis by a spring which is adapted to move the vehicle body upwards and downwards to move the vehicle body upwards, thereby preventing the vehicle from sliding onto the chassis and moving upwards. The L-shaped iron plate is fixedly connected to the limit rod, and the right side of the L-shaped iron plate is fixedly connected to the limit block. The inner wall of the limit block is provided with an insertion rod. The top of the L-shaped iron plate is fixedly connected to a baffle. The circumferential surface of the transmission wheel contacts the left side of the cleaning roller, the circumferential surface of the connecting rod contacts the circumferential surface of the limit rod, and the limit rod is used to limit the connecting rod, the inner wall of the magnet contacts the circumferential surface of the insertion rod, and the insertion rod is used to lock the magnet. The protective frame will be used to protect the fuselage when the drone loses control. When the drone body loses control and falls due to an accident, the protective frame rotates to drive the connecting rod to rotate, so that the protective frame can protect the surface of the drone body, and then absorb the impact force caused by the fall, reduce the degree of damage to the fuselage, reduce the impact of the fall on the fuselage, help to extend the service life of the drone, and reduce the frequency of maintenance and replacement of parts.

[0007] Preferably, the shock absorbing mechanism includes an L-shaped plate, which is fixedly connected to the top of the drone body, and the top of the L-shaped plate is fixedly connected to a chamfered plate, the inner wall of the chamfered plate is slidably connected to a moving rod 2 through a spring, and the bottom of the moving rod 2 is fixedly connected to an inclined plate, the inner wall of the support frame is slidably connected to a shock absorbing rod through a spring, and the bottom of the shock absorbing rod is fixedly connected to an arc plate. When protecting, the moving rod 2 moves downward to drive the inclined plate to move downward, thereby locking the position of the connecting rod and the protective frame, thereby preventing the protective frame from loosening under the impact of falling, and ensuring that the protective frame continues to play its role. , to avoid friction between the fuselage and the ground or puncture by sharp objects, and to prevent secondary damage, the top of the drone body is in contact with the bottom of the inclined plate, and the inclined plate is used to limit the connecting rod, and the shock absorber rod is used to absorb the impact force generated by the landing when the drone lands. When the surveying and mapping is completed and the landing is completed, the arc plate moves upward to drive the shock absorber rod to move upward and compress the spring, thereby reducing the impact force of the drone when landing, and then protecting the sensors and precision components inside the drone body, avoiding the displacement of lenses and loosening of internal components of sensors such as cameras and lidars due to hard collisions, and ensuring that the accuracy of surveying and mapping equipment is not affected.

[0008] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0009] 1. This kind of surveying and mapping UAV, through the coordinated operation among the UAV body, the support frame, the fixed shell, the camera, the protective plate, the toggle plate, the chamfer block, the sliding rod, the connecting block, the fixed block 1, the groove plate, the fixed block 2, the moving rod 1, and the rounded corner strip, can make the camera fly into the air when it is necessary to conduct terrain surveying, thereby being able to obtain terrain data of a large area in the most efficient way, which can greatly shorten the time of field operations, and is particularly suitable for areas that are difficult to reach by manpower, such as mountainous areas and deserts. It can avoid the problem of lens scratches and breakage caused by collisions and scrapes, and ensure that the optical performance is not damaged, so as to ensure the clarity during the surveying and mapping process, and at the same time, it can also prevent dust from adhering to the lens surface of the camera and affecting the imaging clarity. The position of the protective plate and the groove plate can also be fixed, so that the stability of the protective plate during use can be ensured, so as to improve the stability during the surveying and mapping process, and avoid the protective plate from falling and resetting due to external factors during surveying and mapping, which affects the surveying and mapping of the camera.

[0010] 2. This kind of surveying and mapping UAV works in coordination among the connecting plate, cleaning roller, straight plate and transmission wheel. When the protection is released, the transmission wheel rotates to drive the straight plate to rotate, so that dust particles and other impurities attached to the surface of the camera lens during the surveying process can be brushed off, thereby effectively improving the clarity of the video sent back by the camera, making it more convenient for surveyors to make surveying and mapping judgments, and avoiding the accumulation of dust on the camera surface due to long-term use, which affects the normal progress of surveying and mapping work.

[0011] 3. This kind of surveying and mapping UAV, through the coordinated operation between the rotating rod, the protective frame, the connecting rod, the L-shaped iron plate, the limit rod, the magnet, the limit block, the plug rod, and the baffle, when the UAV body accidentally loses control and falls, the rotation of the protective frame drives the connecting rod to rotate, so that the protective frame can protect the surface of the UAV body, and then can absorb the impact force caused by the fall, reduce the degree of damage to the fuselage, reduce the impact of the fall on the fuselage, help to extend the service life of the UAV, and reduce the frequency of repair and replacement of parts.

[0012] 4. This kind of surveying and mapping UAV, through the coordinated operation among the L-shaped plate, chamfered plate, movable rod 2, and inclined plate, when performing protection, the movable rod 2 moves downward to drive the inclined plate downward, thereby locking the position of the connecting rod and the protective frame, thereby preventing the protective frame from loosening under the impact of falling, ensuring that the protective frame continues to function, avoiding friction between the fuselage and the ground or puncture by sharp objects, and eliminating secondary damage.

[0013] 5. This kind of surveying and mapping UAV, through the coordinated operation between the shock absorber rod and the curved plate, when the surveying and mapping is completed and landing, the curved plate moves upward, driving the shock absorber rod to move upward and compressing the spring, thereby reducing the impact force of the UAV during landing, and further protecting the sensors and precision components inside the UAV body, preventing the camera, lidar and other sensors from lens displacement and internal component loosening due to hard collisions, ensuring that the accuracy of the surveying and mapping equipment is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center A; Figure 4 It is a schematic diagram of the protective device of the present invention; Figure 5 Schematic diagram of the limiting rod structure of the present invention; Figure 6 A half-section view of the shock absorbing mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point B in the middle.

[0015] In the figure: 1. UAV body; 2. Support frame; 3. Fixed shell; 4. Camera; 5. Protective plate; 6. Toggle plate; 7. Chamfered block; 8. Sliding rod; 9. Connecting block; 10. Fixed block 1; 11. Grooved plate; 12. Fixed block 2; 13. Moving rod 1; 14. Rounded corner strip; 15. Protective device; 151. Connecting plate; 152. Cleaning roller; 153. Straight plate; 154. Transmission wheel; 155. Rotating rod; 156. Protective frame; 157. Connecting rod; 158. L-shaped iron plate; 159. Limit rod; 1510. Magnet; 1511. Limit block; 1512. Insert rod; 1513. Baffle; 16. Shock-absorbing mechanism; 161. L-shaped plate; 162. Chamfered plate; 163. Moving rod 2; 164. Inclined plate; 165. Shock-absorbing rod; 166. Arc plate. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 7 One embodiment of the present invention is: a surveying and mapping drone, comprising a drone body 1, the front of the drone body 1 is fixedly connected to a support frame 2, the inner wall of the drone body 1 is fixedly connected to a fixed shell 3, the inner wall of the fixed shell 3 is fixedly connected to a camera 4, the inner wall of the fixed shell 3 is slidably connected to a protective plate 5, the left side of the protective plate 5 is fixedly connected to a toggle plate 6, the left side of the fixed shell 3 is fixedly connected to a chamfered block 7, the inner wall of the chamfered block 7 is slidably connected to a sliding rod 8 through a spring, the left side of the protective plate 5 is fixedly connected to a connecting block 9, the left side of the connecting block 9 is fixedly connected to a fixed block 10, the inner wall of the protective plate 5 is fixedly connected to a groove plate 11, the left side of the drone body 1 is fixedly connected to a fixed block 2 12, the front of the drone body 1 is provided with a protective device 15 for protecting the drone when it loses control, the inner wall of the support frame 2 is provided with a shock absorbing mechanism 16 for improving the landing stability of the drone, the inner wall of the fixed block 2 12 is slidably connected to a moving rod 13 through a spring, and the left side of the moving rod 13 is fixedly connected to a rounded corner strip 14; When terrain surveying is required, the drone body 1 is controlled to move by the remote control. The movement of the drone body 1 drives the fixed shell 3 to move, and the movement of the fixed shell 3 drives the camera 4 to move, so that the camera 4 can fly into the air, and then can obtain terrain data of a large area in the most efficient way, which can greatly shorten the field operation time, and is especially suitable for mountainous areas, deserts and other areas that are difficult to reach by manpower. Before starting the drone body 1, the toggle plate 6 is manually pushed to move upward. The upward movement of the toggle plate 6 drives the protective plate 5 to move upward. The upward movement of the protective plate 5 drives the connecting block 9 to move upward. The upward movement of the connecting block 9 drives the fixed block 10 to move upward. The upward movement of the fixed block 10 drives the sliding rod 8 to move upward and compresses the spring, so that the protective plate 5 can be opened to contact the protection of the camera 4. When the drone is not used for surveying, the lens can be prevented from being scratched or broken due to collision or scratching, thereby ensuring that the optical performance is not damaged, so as to ensure the clarity during the surveying process, and at the same time, dust can be prevented from adhering to the lens surface of the camera 4 and affecting the imaging clarity; The inner wall of the fixed block 10 is fixedly connected to the circumferential surface of the sliding rod 8. The protective plate 5 will be used to protect the camera 4 from dust. The groove plate 11 will push the rounded corner bar 14 to move during operation, and the rounded corner bar 14 will limit the groove plate 11. The rounded corner bar 14 is pressed against the left edge of the cam 14 and the left edge of the cam 14 is pressed against the right edge of the cam 14, and the left edge of the cam 14 is pressed against the right edge of the cam 14.

[0018] Working principle: When terrain surveying is required, the toggle plate 6 moves upward to drive the protective plate 5 to move upward, the protective plate 5 moves upward to drive the connecting block 9 to move upward, and the connecting block 9 moves upward to drive the fixing block 10 to move upward, so that the protective plate 5 can be opened to contact the protection of the camera 4, and can ensure that the optical performance is not damaged when the drone is not used for surveying, so as to ensure the clarity during the surveying process. At the same time, the moving rod 13 moves to the left through the spring reset, and the moving rod 13 moves to the left to drive the rounded corner bar 14 to move to the left. At this time, the rounded corner bar 14 will be stuck in the groove of the groove plate 11, so that the position of the protective plate 5 and the groove plate 11 can be fixed, so as to ensure the stability of the protective plate 5 during use, so as to improve the stability during the surveying process.

[0019] See also Figure 1-Figure 7 In another embodiment of the present invention, based on the above embodiment, the protective device 15 includes a connecting plate 151, which is fixedly connected to the right side of the protective plate 5. The inner wall of the fixed shell 3 is fixedly connected to the connecting plate 151. The inner wall of the connecting plate 151 is rotatably connected to a straight plate 153. The central axis of the straight plate 153 is fixedly connected to a transmission wheel 154. The inner wall of the drone body 1 is rotatably connected to a rotating rod 155 via a torsion spring. The circumferential surface of the rotating rod 155 is fixedly connected to a protective frame 156. The inner wall of the protective frame 156 is fixedly connected to a connecting rod 157. The circumferential surface of the support frame 2 is fixedly connected to an L-shaped iron plate 158. When the protection is released, the protective plate 5 moves upward to drive the connecting plate 151 to move upward, the connecting plate 151 moves upward to drive the straight plate 153 to move upward, the straight plate 153 moves upward to drive the transmission wheel 154 to move upward, and the transmission wheel 154 contacts the cleaning roller 152 during the movement, and generates friction, so that the transmission wheel 154 rotates, and the rotation of the transmission wheel 154 drives the straight plate 153 to rotate, so that dust particles and other impurities attached to the surface of the camera 4 lens can be brushed off during the surveying process, thereby effectively improving the clarity of the video sent back by the camera 4, and making it more convenient for surveyors to make surveying and mapping judgments, thereby avoiding the accumulation of dust on the surface of the camera 4 due to long-term use, which affects the normal progress of the surveying and mapping work; The inner wall of the L-shaped iron plate 158 is connected to the limit rod 159 through a spring sliding connection. The circumferential surface of the limit rod 159 is fixedly connected to the magnet 1510. The right side of the L-shaped iron plate 158 is fixedly connected to the limit block 1511. The inner wall of the limit block 1511 is provided with an insertion rod 1512. The top of the L-shaped iron plate 158 is fixedly connected to the baffle 1513. The circumferential surface of the transmission wheel 154 contacts the left side of the cleaning roller 152. The circumferential surface of the connecting rod 157 contacts the circumferential surface of the limit rod 159, and the limit rod 159 is used to limit the connecting rod 157. The inner wall of the magnet 1510 contacts the circumferential surface of the insertion rod 1512, and the insertion rod 1512 is used to lock the magnet 1510. The protective frame 156 will be used to protect the fuselage when the drone loses control; When the drone body 1 falls out of control due to an accident, the drone body 1 will flip in the air and drive the support frame 2 to flip. The flip of the support frame 2 drives the L-shaped iron plate 158 to flip. The flip of the L-shaped iron plate 158 drives the magnet 1510 to move upward. The magnet 1510 will be attracted to the L-shaped iron plate 158 in a normal state to reduce the friction between the magnet 1510 and the rod 1512, so that the rod 1512 can slide easily. When the rod 1512 moves upward, it will slide into the inside of the baffle 1513. At this time, the rod 1512 will fall off the inside of the magnet 1510 to release the magnet 1 510, at this time, the limit rod 159 will move to the right through the spring return, and drive the magnet 1510 to move, thereby releasing the limit on the connecting rod 157, and the rotating rod 155 will rotate counterclockwise through the torsion spring, and the rotating rod 155 rotates to drive the protective frame 156 to rotate, and the protective frame 156 rotates to drive the connecting rod 157 to rotate, so that the protective frame 156 can protect the surface of the drone body 1, thereby absorbing the impact force caused by the fall, reducing the degree of damage to the fuselage, reducing the impact of the fall on the fuselage, helping to extend the service life of the drone and reduce the frequency of repair and replacement of parts.

[0020] When the protection is released, the transmission wheel 154 will contact the cleaning roller 152 during its movement, and friction will be generated, causing the transmission wheel 154 to rotate. The rotation of the transmission wheel 154 drives the straight plate 153 to rotate, so that dust particles and other impurities attached to the surface of the camera 4 lens during the surveying process can be brushed off. When the drone body 1 accidentally loses control and falls, the rotation rod 155 drives the protective frame 156 to rotate, and the rotation of the protective frame 156 drives the connecting rod 157 to rotate, so that the protective frame 156 can protect the surface of the drone body 1, thereby absorbing the impact force caused by the fall, reducing the degree of damage to the fuselage, and reducing the impact of the fall on the fuselage.

[0021] The shock absorbing mechanism 16 includes an L-shaped plate 161, which is fixedly connected to the top of the drone body 1. The top of the L-shaped plate 161 is fixedly connected to a chamfered plate 162. The inner wall of the chamfered plate 162 is slidably connected to a second moving rod 163 via a spring. The bottom of the second moving rod 163 is fixedly connected to an inclined plate 164. The inner wall of the support frame 2 is slidably connected to a shock absorbing rod 165 via a spring. The bottom of the shock absorbing rod 165 is fixedly connected to an arc plate 166. During protection, the connecting rod 157 contacts the inclined plate 164 during rotation and generates an upward squeezing force on the inclined plate 164, thereby causing the inclined plate 164 to move upward due to the squeezing force. The upward movement of the inclined plate 164 drives the second moving rod 163 to move upward and compresses its own spring. After the connecting rod 157 passes over the inclined plate 164, the second moving rod 163 moves downward due to the spring return. The downward movement of the second moving rod 163 drives the inclined plate 164 downward, thereby locking the position of the connecting rod 157 and the protective frame 156, thereby preventing the protective frame 156 from loosening under the impact of a fall, ensuring that the protective frame 156 continues to function, preventing the fuselage from rubbing against the ground or being pierced by sharp objects, and preventing secondary damage. The top of the drone body 1 is in contact with the bottom of the inclined plate 164, and the inclined plate 164 is used to limit the connecting rod 157. The shock-absorbing rod 165 is used to absorb the impact force generated by the landing of the drone; When the surveying and mapping is completed and the drone lands, the drone body 1 drives the support frame 2 to descend, and the movement of the support frame 2 drives the shock absorber rod 165 to move downward, and the downward movement of the shock absorber rod 165 drives the arc plate 166 to move downward, and the arc plate 166 contacts the ground when it descends and squeezes the arc plate 166 upward, and the upward movement of the arc plate 166 drives the shock absorber rod 165 to move upward and compress the spring, thereby reducing the impact force when the drone lands, and further protecting the sensors and precision components inside the drone body 1, and preventing the camera 4, lidar and other sensors from causing lens displacement and internal components loosening due to hard collision, thereby ensuring that the accuracy of the surveying and mapping equipment is not affected.

[0022] Working principle: After the connecting rod 157 passes over the inclined plate 164, the moving rod 2 163 moves downward by spring return. The downward movement of the moving rod 2 163 drives the inclined plate 164 to move downward, thereby locking the position of the connecting rod 157 and the protective frame 156, thereby preventing the protective frame 156 from loosening under the impact of falling, ensuring that the protective frame 156 continues to play a role, and the curved plate 166 will contact the ground when it descends and squeeze the curved plate 166 upward. The upward movement of the curved plate 166 drives the shock absorber rod 165 to move upward and compress the spring, thereby reducing the impact force when the drone lands, ensuring that the accuracy of the surveying and mapping equipment is not affected.

[0023] The present invention provides a surveying and mapping drone. There are numerous methods and approaches for implementing this technical solution. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A surveying and mapping UAV, comprising a UAV body (1), characterized in that: The front part of the drone body (1) is fixedly connected to a support frame (2), the inner wall of the drone body (1) is fixedly connected to a fixed shell (3), the inner wall of the fixed shell (3) is fixedly connected to a camera (4), the inner wall of the fixed shell (3) is slidably connected to a protective plate (5), the left side of the protective plate (5) is fixedly connected to a toggle plate (6), the left side of the fixed shell (3) is fixedly connected to a chamfer block (7), the inner wall of the chamfer block (7) is slidably connected to a sliding rod (8) via a spring, the left side of the protective plate (5) is fixedly connected to a connecting block (9), and the connecting block (9) The left side of the support frame (2) is fixedly connected to a fixed block 1 (10), the inner wall of the protective plate (5) is fixedly connected to a groove plate (11), the left side of the drone body (1) is fixedly connected to a fixed block 2 (12), the front part of the drone body (1) is provided with a protective device (15) for protecting the drone when it loses control, the inner wall of the support frame (2) is provided with a shock absorbing mechanism (16) for improving the landing stability of the drone, the inner wall of the fixed block 2 (12) is slidably connected to a moving rod 1 (13) through a spring, and the left side of the moving rod 1 (13) is fixedly connected to a rounded corner bar (14).

2. The surveying and mapping UAV according to claim 1, characterized in that: The inner wall of the fixed block 1 (10) is fixedly connected to the circumferential surface of the sliding rod (8), the protective plate (5) is used to protect the camera (4) from dust, and the groove plate (11) will push the rounded corner strip (14) to move during operation, and the rounded corner strip (14) will limit the groove plate (11).

3. The surveying and mapping UAV according to claim 2, characterized in that: The protective device (15) comprises a connecting plate (151), the connecting plate (151) is fixedly connected to the right side of the protective plate (5), the inner wall of the fixed shell (3) is fixedly connected to the connecting plate (151), and the inner wall of the connecting plate (151) is rotatably connected to a straight plate (153).

4. The surveying and mapping UAV according to claim 3, characterized in that: The central axis of the straight plate (153) is fixedly connected to a transmission wheel (154); the inner wall of the drone body (1) is rotatably connected to a rotating rod (155) via a torsion spring; the circumferential surface of the rotating rod (155) is fixedly connected to a protective frame (156); the inner wall of the protective frame (156) is fixedly connected to a connecting rod (157); and the circumferential surface of the support frame (2) is fixedly connected to an L-shaped iron plate (158).

5. The surveying and mapping UAV according to claim 4, characterized in that: The inner wall of the L-shaped iron plate (158) is slidably connected to a limit rod (159) via a spring, the circumferential surface of the limit rod (159) is fixedly connected to a magnet (1510), the right side of the L-shaped iron plate (158) is fixedly connected to a limit block (1511), the inner wall of the limit block (1511) is provided with an insert rod (1512), and the top of the L-shaped iron plate (158) is fixedly connected to a baffle (1513).

6. The surveying and mapping UAV according to claim 5, characterized in that: The circumferential surface of the transmission wheel (154) contacts the left side of the cleaning roller (152), the circumferential surface of the connecting rod (157) contacts the circumferential surface of the limiting rod (159), and the limiting rod (159) is used to limit the connecting rod (157), the inner wall of the magnet (1510) contacts the circumferential surface of the insertion rod (1512), and the insertion rod (1512) is used to lock the magnet (1510), and the protective frame (156) is used to protect the fuselage when the UAV loses control.

7. The surveying and mapping UAV according to claim 6, characterized in that: The shock absorbing mechanism (16) includes an L-shaped plate (161), the L-shaped plate (161) is fixedly connected to the top of the drone body (1), the top of the L-shaped plate (161) is fixedly connected to a chamfered plate (162), and the inner wall of the chamfered plate (162) is slidably connected to a second moving rod (163) via a spring.

8. The surveying and mapping UAV according to claim 7, characterized in that: The bottom of the second moving rod (163) is fixedly connected to an inclined plate (164), the inner wall of the support frame (2) is slidably connected to a shock-absorbing rod (165) via a spring, and the bottom of the shock-absorbing rod (165) is fixedly connected to an arc plate (166).

9. The surveying and mapping UAV according to claim 8, characterized in that: The top of the drone body (1) and the bottom of the inclined plate (164) are in contact with each other, and the inclined plate (164) is used to limit the connecting rod (157). The shock-absorbing rod (165) is used to absorb the impact force generated by landing when the drone lands.

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