Surveying and mapping unmanned aerial vehicle with protection function

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a surveying and mapping unmanned aerial vehicle with a protection function, and the surveying and mapping unmanned aerial vehicle comprises a preparation mechanism fixedly connected to the bottom end of the unmanned aerial vehicle. The preparation mechanism comprises an electric telescopic rod, two second ring frames, two V-shaped sliding rails and two first round rods. According to the device, when an emergency situation occurs, the telescopic rod can be rapidly driven to slide up and down according to requirements through driving of the electric telescopic rod, preparation work can be completed in a short time, the starting efficiency of the protection function is effectively improved, the movement track of the telescopic rod can be controlled by arranging a V-shaped sliding rail, and the practicability is high. And it is guaranteed that the first ring frame is staggered from the position under the fan blades of the unmanned aerial vehicle under the condition that the preparation mechanism is not used, the flight stability of the unmanned aerial vehicle is prevented from being affected, when the preparation mechanism is operated, it can be guaranteed that the first ring frame and the second ring frame are internally and accurately inserted, and the working stability is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically to a surveying UAV with protective functions. Background Technology

[0002] With the rapid development of drone technology, surveying drones have become an important tool for acquiring geographic information. They can enter areas that are difficult for humans to reach, quickly collecting high-precision spatial data, which greatly facilitates urban planning, land surveying, environmental monitoring, and other fields. However, surveying drones may encounter emergencies when performing missions, such as losing control signals due to radio interference or losing GPS signals under adverse weather conditions. These situations may require the drone to make an emergency descent.

[0003] During an emergency descent, drones that lose control signals often struggle to maintain balance, increasing the risk of mission failure and potentially causing unstable landings that can severely damage the aircraft. Such damage can result in direct economic losses and may also disrupt project progress and quality due to interrupted data collection. Summary of the Invention

[0004] To overcome the aforementioned technical problems, the present invention aims to provide a surveying drone with protective functions. In case of emergency, the telescopic rod can be quickly moved up and down as needed by an electric telescopic rod drive, enabling preparatory work to be completed in a short time and effectively improving the activation efficiency of the protective function. By setting a V-shaped slide rail, the movement trajectory of the telescopic rod can be controlled, ensuring that when the preparatory mechanism is not used, the position of the first ring frame is offset from the position directly below the drone's blades, avoiding affecting the drone's flight stability. When the preparatory mechanism is in operation, it can also ensure precise internal insertion of the first ring frame and the second ring frame, effectively improving operational stability.

[0005] A surveying drone with protective functions includes a preparatory mechanism fixedly connected to the bottom of the drone, and a winding and placement mechanism is fixedly connected to both ends of the preparatory mechanism near the bottom. The preparatory mechanism includes an electric telescopic rod, two ring frames, two V-shaped slide rails, and two sets of round rods. The outer wall of the electric telescopic rod is fixedly connected to the bottom wall of the UAV. A telescopic rod is fixedly connected to the outer wall of one end of the electric telescopic rod, and a ring frame is fixedly connected to the outer wall of one end of the telescopic rod.

[0006] Furthermore, the outer wall of the second ring frame is fixedly connected to the support of one of the rotors of the UAV, the inner wall of the second ring frame is inserted into the outer wall of the first ring frame, the outer wall of one end of the V-shaped slide rail is fixedly connected to the support of one of the rotors of the UAV, and the inner wall of the V-shaped slide rail is slidably inserted into the slide tube of the telescopic rod.

[0007] Preferably, a square tube is fixedly connected to one end of the outer wall of the telescopic rod, and an L-shaped rod is slidably inserted inside the square tube. The winding and placing mechanism includes a semi-circular shell one, the outer wall of one end of the round rod one is fixedly connected to the bottom wall of the drone, a group of the outer walls of one end of the round rod one are fixedly connected to the outer wall of the semi-circular shell one, a semi-circular shell two is rotatably connected to one end of the semi-circular shell one, and a sliding groove is opened at the center of the outer wall of the semi-circular shell two, and one end of the L-shaped rod is slidably inserted into the sliding groove.

[0008] Preferably: a circular tube is rotatably connected inside the semi-circular shell, an airbag is wound around the outer wall of the circular tube, an arc-shaped frame is fixedly connected to the outer wall of one end of the airbag, circular frames are fixedly connected to the outer wall of the circular tube near both ends, a plurality of square grooves are formed at equal angles around the outer wall of the circular frame, a block is fixedly connected to the inner wall of both ends of the semi-circular shell, a T-shaped hole is formed inside the block, a slider is slidably inserted into the T-shaped hole, a slider is fixedly connected to the inner wall of both ends of the semi-circular shell, and the outer wall of the slider is inserted into the T-shaped hole.

[0009] Preferably, a coil spring is fixedly connected between the outer wall of the circular frame and the inner wall of the semi-circular shell.

[0010] Preferably, a button is fixedly connected to the outer wall of one end of the round tube.

[0011] Preferably, a cylinder is fixedly connected to the outer wall of the other end of the first circular tube, and a second circular tube is rotatably connected inside the cylinder. A sealing element is fixedly connected to the outer wall of the second circular tube, and the outer wall of the sealing element is rotatably connected to the inner wall of the cylinder.

[0012] Preferably, the outer wall of the first circular tube has several circular holes at equal angles around its axis, and an air tube is fixedly connected between the outer wall of the second circular tube and the outer wall of one end of the ring frame.

[0013] Preferably, a closed-tube unit is fixedly connected to the outer wall of one end of the semi-circular shell one near the position of the circular tube two. The closed-tube unit includes a circular rod two and an L-shaped frame. The outer wall of the circular rod two is fixedly connected to the outer wall of the semi-circular shell one. A square frame one is fixedly connected to the outer wall of one end of the circular rod two. Spring telescopic rods are fixedly connected to the outer walls of both ends of the square frame one. A square frame two is fixedly connected between the outer walls of one end of the two spring telescopic rods. The outer wall of the square frame two and the outer wall of the square frame one are inserted into the outer wall of the trachea. The outer wall of the L-shaped frame is fixedly connected to the outer wall of one end of the semi-circular shell two.

[0014] The beneficial effects of this invention are: 1. The electric telescopic pole is fixedly connected to the bottom wall of the drone via its outer wall. A telescopic rod is fixedly connected to the outer wall of one end of the electric telescopic pole, and a ring frame is fixedly connected to the outer wall of the other end of the telescopic rod. In case of emergency, the electric telescopic pole can be driven to slide up and down as needed, which can complete the preparatory work in a short time and effectively improve the activation efficiency of the protective function.

[0015] 2. The outer wall of the second ring frame is fixedly connected to the support of one of the drone's rotors. The inner wall of the second ring frame is inserted into the outer wall of the first ring frame. One end of the outer wall of the V-shaped slide rail is fixedly connected to the support of one of the drone's rotors. The inner wall of the V-shaped slide rail is slidably inserted into the slide tube of the telescopic rod. By setting the V-shaped slide rail, the movement trajectory of the telescopic rod can be controlled, ensuring that the position of the first ring frame and the drone's fan blades are offset when the preparatory mechanism is not used, thus avoiding affecting the drone's flight stability. When the preparatory mechanism is in operation, it can also ensure that the first ring frame and the second ring frame are precisely inserted, effectively improving the working stability.

[0016] 3. A square tube is fixedly connected to one end of the telescopic rod, and an L-shaped rod is slidably inserted inside the square tube. The winding and placing mechanism mainly includes a semi-circular shell one. The outer wall of one end of the round rod one is fixedly connected to the bottom wall of the UAV. The outer walls of one end of a set of round rods one are fixedly connected to the outer wall of the semi-circular shell one. A semi-circular shell two is rotatably connected to one end of the semi-circular shell one, and a groove is opened at the center of the outer wall of the semi-circular shell two. One end of the L-shaped rod is slidably inserted into the groove. The square tube is driven upward to the designated position by the electric telescopic rod. Pulling the L-shaped rod upward can cause the semi-circular shell two to flip. The electric telescopic rod drives the square tube to move downward. Conversely, it causes the semi-circular shell two to flip back to the original position and be limited, which effectively improves mechanical linkage and working stability. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of another overall structural form of the present invention; Figure 3 This is a schematic diagram of the preparatory mechanism structure in this invention; Figure 4 This is a schematic diagram of the semi-circular shell structure in this invention; Figure 5 This is a partial structural diagram of the winding and placement mechanism in this invention; Figure 6 This is a schematic diagram of the structure of one end of the circular tube in this invention; Figure 7 This is a schematic diagram of the closed-tube unit structure in this invention; Figure 8 This is a schematic diagram of a partial cross-sectional structure at the other end of a circular tube in this invention.

[0019] In the diagram: 110, UAV; 200, Preparatory mechanism; 210, Electric telescopic pole; 211, Round rod one; 213, V-shaped slide rail; 220, Telescopic pole; 221, Ring frame one; 230, Square tube; 231, L-shaped rod; 240, Ring frame two; 300, Rewinding and placement mechanism; 310, Semi-circular shell one; 311, Semi-circular shell two; 312, Slide groove; 320, Round tube one; 321, Round hole; 322. 323. Round frame; 324. Square groove; 325. Coil spring; 326. Button; 327. Slider 1; 330. Square block; 331. T-shaped hole; 332. Slider 2; 340. Closed tube unit; 341. Round rod 2; 342. Square frame 1; 343. Spring telescopic rod; 344. Square frame 2; 345. L-shaped frame; 350. Cylinder; 351. Round tube 2; 352. Seal; 353. Airbag; 354. Arc frame. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-8 As shown, a surveying drone with protective functions includes a preparatory mechanism 200 fixedly connected to the bottom of the drone 110. A winding and placing mechanism 300 is fixedly connected to both ends of the preparatory mechanism 200 near the bottom. The preparatory mechanism 200 includes an electric telescopic rod 210, two ring frames 240, two V-shaped slide rails 213, and two sets of round rods 211. The outer wall of the electric telescopic rod 210 is fixedly connected to the bottom wall of the drone 110. A telescopic rod 220 is fixedly connected to the outer wall of one end of the electric telescopic rod 210, and a ring frame 221 is fixedly connected to the outer wall of one end of the telescopic rod 221.

[0022] The outer wall of ring frame 240 is fixedly connected to the support of one of the rotors of UAV 110. The inner wall of ring frame 240 is inserted into the outer wall of ring frame 221. One end of the outer wall of V-shaped slide rail 213 is fixedly connected to the support of one of the rotors of UAV 110. The inner wall of V-shaped slide rail 213 is slidably inserted into the slide tube of telescopic rod 220. One end of the outer wall of telescopic rod 220 is fixedly connected to square tube 230. An L-shaped rod 231 is slidably inserted into the inside of square tube 230. The winding and placing mechanism 300 includes a semi-circular shell 310. One end of the outer wall of round rod 211 is fixedly connected to the bottom wall of UAV 110. One end of the outer wall of a set of round rods 211 is fixedly connected to the outer wall of semi-circular shell 310. One end of semi-circular shell 310 is rotatably connected to semi-circular shell 311. 1. A groove 312 is provided at the center of the outer wall. One end of the L-shaped rod 231 is slidably inserted into the groove 312. A circular tube 320 is rotatably connected inside the semi-circular shell 310. An airbag 353 is wrapped around the outer wall of the circular tube 320. An arc-shaped frame 354 is fixedly connected to the outer wall of one end of the airbag 353. A circular frame 322 is fixedly connected to the outer wall of the circular tube 320 near both ends. Several square grooves 323 are provided at equal angles around the outer wall of the circular frame 322 around its axis. A block 330 is fixedly connected to the inner wall of both ends of the semi-circular shell 310. A T-shaped hole 331 is provided inside the block 330. A slider 332 is slidably inserted into the T-shaped hole 331. A slider 326 is fixedly connected to the inner wall of both ends of the semi-circular shell 311. The outer wall of the slider 326 is inserted into the T-shaped hole 331.

[0023] A coil spring 324 is fixedly connected between the outer wall of the circular frame 322 and the inner wall of the semi-circular shell 310. A button 325 is fixedly connected to the outer wall of one end of the circular tube 320, and a cylinder 350 is fixedly connected to the outer wall of the other end of the circular tube 320. A second circular tube 351 is rotatably connected inside the cylinder 350. A sealing element 352 is fixedly connected to the outer wall of the second circular tube 351, and the outer wall of the sealing element 352 is rotatably connected to the inner wall of the cylinder 350. Several circular holes 321 are opened at equal angles around the axis of the first circular tube 322. An air tube is fixedly connected between the outer wall of the second circular tube 351 and the outer wall of one end of the ring frame 221. One end of the semi-circular shell 310 A closed tube unit 340 is fixedly connected to the outer wall near the position of the second round tube 351. The closed tube unit 340 includes a second round rod 341 and an L-shaped frame 345. The outer wall of the second round rod 341 is fixedly connected to the outer wall of the first semi-circular shell 310. A first square frame 342 is fixedly connected to the outer wall of one end of the second round rod 341. Spring telescopic rods 343 are fixedly connected to the outer walls of both ends of the first square frame 342. A second square frame 344 is fixedly connected between the outer walls of one end of the two spring telescopic rods 343. The outer walls of the second square frame 344 and the first square frame 342 are inserted into and cooperate with the outer wall of the trachea. The outer wall of the L-shaped frame 345 is fixedly connected to the outer wall of one end of the second semi-circular shell 311.

[0024] Specifically, during operation, in case of an emergency descent, the electric telescopic rod 210 drives the telescopic rod 220 upward, causing the ring frame 221 to move along the V-shaped slide rail 213 until it engages with the ring frame 240. Simultaneously, the upward movement of the telescopic rod 220 causes the square tube 230 to move upward to the designated position. The L-shaped rod 231 is pulled upward by the square tube 230, causing one end of the L-shaped rod 231 to slide against the slide groove 312, causing the semi-circular shell 311 to flip, and the slider 326 to separate from the T-shaped hole 331. Block 2 332 slides into the square 330 and separates from the square groove 323, releasing the limit. Driven by the rebound of the coil spring 324, the first round tube 320 rotates, rapidly throwing the wrapped airbag 353 out from its original position at the semi-circular shell 311. The rotor on the drone 110, located at the ring frame 240, rotates, entering the air tube through the ring frame 240, then entering the interior of the first round tube 320 through the second round tube 351, and expelling it through the round hole 321 to rapidly inflate the airbag 353. Once inflated, the electric telescopic rod 210... The telescopic rod 220 moves downward to its original position, and the square tube 230 also moves downward to its original position, causing the semi-circular shell 311 to flip back to its original position. The L-shaped frame 345 at one end of the semi-circular shell 311 contacts the square frame 344. The square frame 344 moves towards the square frame 342, compressing the air tube clamped between the square frame 344 and the square frame 342 until the airbag 353 is closed. When it is necessary to retract the airbag 353, the air inside the airbag 353 is released. The button 325 is then turned, and... The rotating circular tube 320 winds the airbag 353 around the arc frame 354 and into contact with the outer wall of the semi-circular shell 310. The electric telescopic rod 210 drives the telescopic rod 220 to move towards the semi-circular shell 310, which in turn moves the square tube 230 and the L-shaped rod 231 downward, causing the semi-circular shell 311 to flip and contact the outer wall of the semi-circular shell 310. The slider 326 is then inserted into the T-shaped hole 331. The slider 332 is squeezed to move outward from the block 330 until it is inserted into the square groove 323, thus limiting the circular tube 320. Example

[0025] like Figure 2-4As shown, in this embodiment, the preparatory mechanism 200 includes an electric telescopic rod 210, two ring frames 240, two V-shaped slide rails 213, and two sets of round rods 211. The outer wall of the electric telescopic rod 210 is fixedly connected to the bottom wall of the drone 110. A telescopic rod 220 is fixedly connected to the outer wall of one end of the electric telescopic rod 210. A ring frame 221 is fixedly connected to the outer wall of one end of the telescopic rod 220. The outer wall of the ring frame 240 is fixedly connected to the support of one of the rotors of the drone 110. The inner wall of the ring frame 240 is inserted into the outer wall of the ring frame 221. The outer wall of one end of the V-shaped slide rail 213 is fixed to the support of one of the rotors of the drone 110. The V-shaped slide rail 213 is slidably inserted into the slide tube of the telescopic rod 220. One end of the outer wall of the telescopic rod 220 is fixedly connected to a square tube 230. An L-shaped rod 231 is slidably inserted into the inside of the square tube 230. The winding and placing mechanism 300 includes a semi-circular shell 310. One end of the outer wall of the round rod 211 is fixedly connected to the bottom wall of the drone 110. One end of the outer wall of a set of round rods 211 is fixedly connected to the outer wall of the semi-circular shell 310. One end of the semi-circular shell 310 is rotatably connected to a second semi-circular shell 311. A groove 312 is opened at the center of the outer wall of the second semi-circular shell 311. One end of the L-shaped rod 231 is slidably inserted into the groove 312.

[0026] In this embodiment, the electric telescopic rod 210 drives the telescopic rod 220 to move upward, causing the ring frame 221 to move along the trajectory of the V-shaped slide rail 213 to be inserted with the ring frame 240. At the same time, the upward movement of the telescopic rod 220 drives the square tube 230 to move upward to the designated position. The L-shaped rod 231 is pulled upward by the square tube 230, causing one end of the L-shaped rod 231 to slide with the slide groove 312, causing the semi-circular shell 311 to flip. The electric telescopic rod 210 can quickly complete the docking work, effectively improving the start-up efficiency of the protective structure. Moreover, the flipping of the semi-circular shell 311 and the separation of one end of the semi-circular shell 310 facilitates the ejection of the airbag 353 and prevents it from getting stuck between the semi-circular shell 310 and the semi-circular shell 311, effectively improving the working stability.

[0027] like Figure 7 As shown, in this embodiment, a closed tube unit 340 is fixedly connected to the outer wall of one end of the semi-circular shell 310 near the position of the circular tube 351. The closed tube unit 340 includes a circular rod 341 and an L-shaped frame 345. The outer wall of the circular rod 341 is fixedly connected to the outer wall of the semi-circular shell 310. A square frame 342 is fixedly connected to the outer wall of one end of the circular rod 341. Spring telescopic rods 343 are fixedly connected to the outer walls of both ends of the square frame 342. A square frame 344 is fixedly connected between the outer walls of one end of the two spring telescopic rods 343. The square frame 344 and the outer wall of the square frame 342 are inserted into and cooperate with the outer wall of the trachea. The outer wall of the L-shaped frame 345 is fixedly connected to the outer wall of one end of the semi-circular shell 311.

[0028] In practice, after inflation is complete, the electric telescopic rod 210 drives the telescopic rod 220 to move downwards to its original position, and the square tube 230 also moves downwards to its original position, causing the semi-circular shell 311 to flip to its original position. The L-shaped frame 345 at one end of the semi-circular shell 311 contacts the square frame 344, and the square frame 344 moves towards the square frame 342, squeezing the air tube between the square frame 344 and the square frame 342 until the airbag 353 is in a closed state, preventing the airbag 353 from being impacted. The internal gas is squeezed out from the ring frame 221, which cannot effectively play a buffering and protective role. Example

[0029] like Figure 5-6 As shown, in this embodiment, a circular tube 320 is rotatably connected inside the semi-circular shell 310. An airbag 353 is wound around the outer wall of the circular tube 320. An arc-shaped frame 354 is fixedly connected to the outer wall of one end of the airbag 353. A circular frame 322 is fixedly connected to the outer wall of the circular tube 320 near both ends. Several square grooves 323 are opened at equal angles around the outer wall of the circular frame 322 around its axis. A block 330 is fixedly connected to the inner wall of both ends of the semi-circular shell 310. A T-shaped hole 331 is opened inside the block 330. A slider 332 is slidably inserted into the T-shaped hole 331. A slider 326 is fixedly connected to the inner wall of both ends of the semi-circular shell 311. The outer wall of the slider 326 is inserted into the T-shaped hole 331. A coil spring 324 is fixedly connected between the outer wall of the circular frame 322 and the inner wall of the semi-circular shell 310. A button 325 is fixedly connected to the outer wall of one end of the circular tube 320.

[0030] In practice, when the airbag 353 needs to be retracted, the air inside the airbag 353 is expelled, the button 325 is twisted, and the first round tube 320 is rotated, so that the airbag 353 is wound around the arc frame 354 and contacts the outer wall of the first semi-circular shell 310. The electric telescopic rod 210 drives the telescopic rod 220 to move towards the first semi-circular shell 310, which drives the square tube 230 and the L-shaped rod 231 to move downward, so that the second semi-circular shell 311 flips and contacts the outer wall of the first semi-circular shell 310. The first slider 326 is inserted into the T-shaped hole 331. The second slider 332 is squeezed to move out of the square block 330 until it is inserted into the square groove 323, which limits the first round tube 320. The personnel can roll up the airbag 353 by twisting the button 325 for the next use, which reduces the space occupied and avoids affecting the normal operation of the drone 110.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structural material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structural materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A surveying unmanned aerial vehicle with a protection function, characterized in that, Including the preparation mechanism (200) that unmanned aerial vehicle (110) bottom fixed connection, preparation mechanism (200) is close to the bottom both ends position and is fixedly connected with the winding placement mechanism (300); Preparation mechanism (200) including electric telescopic rod (210), two ring frames two (240), two V-shaped slide rails (213) and two groups of round bars one (211), electric telescopic rod (210) outer wall and unmanned aerial vehicle (110) bottom wall fixed connection, electric telescopic rod (210) one end outer wall fixedly connected with telescopic rod (220), telescopic rod (220) one end outer wall fixedly connected with ring frame one (221).

2. The surveying unmanned aerial vehicle with protection function according to claim 1, characterized in that, Ring frame two (240) outer wall and the support of one of the rotors of unmanned aerial vehicle (110) are fixedly connected, the inner wall of ring frame two (240) and the outer wall of ring frame one (221) are inserted and matched, the outer wall of V-shaped slide rail (213) one end and the support of one of the rotors of unmanned aerial vehicle (110) are fixedly connected, the inner wall of V-shaped slide rail (213) and the slide pipe of telescopic rod (220) are slidably inserted.

3. The surveying unmanned aerial vehicle with protection function according to claim 2, characterized in that, The outer wall of telescopic rod (220) one end is fixedly connected with square tube (230), the inside of square tube (230) is slidably inserted with L-shaped rod (231), winding placement mechanism (300) includes semicircular shell one (310), one end outer wall of one group of round bars one (211) and unmanned aerial vehicle (110) bottom wall fixed connection, the outer wall between one end outer wall of one group of round bars one (211) and semicircular shell one (310) is fixedly connected, one end of semicircular shell one (310) is rotatably connected with semicircular shell two (311), the outer wall of semicircular shell two (311) is located at the center and is provided with a sliding groove (312), one end of L-shaped rod (231) and sliding groove (312) are slidably inserted.

4. The surveying unmanned aerial vehicle with protection function according to claim 3, characterized in that, Semicircular shell one (310) is rotatably connected with circular pipe one (320) inside, the outer wall of circular pipe one (320) is wound with air bag (353), the outer wall of air bag (353) one end is fixedly connected with arc-shaped frame (354), the outer wall of circular pipe one (320) is fixedly connected with circular frame (322) near both ends positions, the outer wall of circular frame (322) is provided with a plurality of square grooves (323) around its axis at equal angles, the inner wall of both ends of semicircular shell one (310) is fixedly connected with square block (330), the inside of square block (330) is provided with T-shaped hole (331), the inside of T-shaped hole (331) is slidably inserted with sliding block two (332), the inner wall of both ends of semicircular shell two (311) is fixedly connected with sliding block one (326), the outer wall of sliding block one (326) and T-shaped hole (331) are inserted and matched.

5. The surveying unmanned aerial vehicle with protection function according to claim 4, characterized in that, The outer wall of circular frame (322) and the inner wall of semicircular shell one (310) are fixedly connected with coil spring (324).

6. The surveying unmanned aerial vehicle with protection function according to claim 5, characterized in that, The outer wall of one end of circular pipe one (320) is fixedly connected with button (325).

7. The surveying unmanned aerial vehicle with protection function according to claim 6, characterized in that, The outer wall of the other end of circular pipe one (320) is fixedly connected with cylinder (350), cylinder (350) is rotatably connected with circular pipe two (351) inside, the outer wall of circular pipe two (351) is fixedly connected with sealing element (352), the outer wall of sealing element (352) and the inner wall of cylinder (350) are rotatably connected.

8. The surveying unmanned aerial vehicle with protection function according to claim 7, characterized in that, A plurality of circular holes (321) are formed in the outer wall of the first circular tube (320) at equal angles around the axis of the first circular tube (320), and the outer wall of the second circular tube (351) is fixedly connected with the outer wall of one end of the ring frame (221) to form an air pipe.

9. The surveying unmanned aerial vehicle with protection function according to claim 8, characterized in that, The outer wall of one end of the first semicircular shell (310) is fixedly connected with the outer wall of the position close to the second circular tube (351) to form a closed tube unit (340), which comprises a second circular rod (341) and an L-shaped frame (345). The outer wall of the second circular rod (341) is fixedly connected with the outer wall of the first semicircular shell (310), and the outer wall of one end of the second circular rod (341) is fixedly connected with a first square frame (342). The outer walls of both ends of the first square frame (342) are fixedly connected with spring telescopic rods (343), and the outer walls of one end of the two spring telescopic rods (343) are fixedly connected with a second square frame (344). The second square frame (344) is in plug-in cooperation with the outer wall of the air pipe between the outer walls of the first square frame (342). The outer wall of the L-shaped frame (345) is fixedly connected with the outer wall of one end of the second semicircular shell (311).

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