An unmanned aerial vehicle based surveying device

Abstract

This invention relates to the field of surveying and mapping technology, and discloses a UAV-based surveying and mapping device, including a support cone. A water storage box is fixed to the surface of the support cone, and four steel cables are evenly fixed to the bottom of the water storage box. A hook is fixed to one end of each steel cable, and a limit ring is slidably connected to the surface of the hook. A support column is fixed to the bottom of the limit ring, and a turntable is fixed to the bottom of the support column. A pressing plate is fixed to the bottom of the turntable, and a support rod is fixed to the bottom of the pressing plate. An auxiliary cone is threadedly connected to the surface of the turntable. This UAV-based surveying and mapping device uses the auxiliary cone as an auxiliary structure, which is inserted into the soil around the support cone to assist in traction of the support cone, thereby improving the stability of the support cone and the target. At the same time, a dividing plate extends from the inside of the movable groove and is inserted into the soil, where the soil presses down on the dividing plate, reducing the difficulty of removing the auxiliary cone and thus improving the stability of the auxiliary cone.

Description

Technical Field

[0001] This invention relates to the field of surveying and mapping technology, specifically to a surveying and mapping device based on unmanned aerial vehicles (UAVs). Background Technology

[0002] Surveying and mapping, literally understood as measurement and drawing, is based on computer technology, optoelectronic technology, network communication technology, space science, and information science, with global navigation satellite positioning system, remote sensing, and geographic information system as its core technologies. It selects existing feature points and boundaries on the ground and obtains graphics and locations reflecting the current state of the ground and related information through measurement methods for use in engineering construction, planning and design, and administrative management. Unmanned aerial vehicle (UAV) surveying is one of the commonly used surveying methods in existing technologies. When using UAVs for surveying, it is usually necessary to install devices such as gimbal cameras, positioning modules, and radar on the UAVs. The ground support equipment required for UAV surveying includes ground station remote controllers, base stations, image control point markers, surveying equipment, and auxiliary support equipment. Among them, the deployment of ground control point markers is of paramount importance in surveying. In the existing technology, ground control point markers are usually in the form of targets, which are inserted into the ground. However, the environment for target deployment varies in different areas. In mountainous areas with slopes or hard ground where it is impossible to insert the target, it is difficult to effectively insert the target into the ground, making it difficult to maintain the target in a balanced state, which leads to errors in the subsequent identification by UAVs. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a UAV-based surveying and mapping device, which solves the problems mentioned in the background art.

[0004] The present invention provides the following technical solution: a surveying device based on a drone, comprising a support cone, a water storage box fixed on the surface of the support cone, four steel ropes evenly fixed on the bottom of the water storage box, a hook fixed on one end of each steel rope, a limit ring slidably connected to the surface of the hook, a support column fixed on the bottom of the limit ring, a turntable fixed on the bottom of the support column, a pressing plate fixed on the bottom of the turntable, and a support rod fixed on the bottom of the pressing plate; The turntable has an auxiliary cone threaded onto its surface. A baffle is fixed to the inner wall of the auxiliary cone. A cross plate is fixed to the bottom of the inner cavity of the auxiliary cone. A sliding cone is provided inside the auxiliary cone. A cross groove is opened on the surface of the sliding cone. The cross groove is slidably connected to the cross plate. A movable groove is opened on the surface of the auxiliary cone. A split plate is slidably connected inside the movable groove. A vertical plate is fixed to the bottom of the split plate near the support rod. A first spring is fixed to the surface of the vertical plate. One end of the first spring is fixed to the inner wall of the auxiliary cone.

[0005] Preferably, a target is fixed to the top of the support cone, and side ears are fixed to both sides of the target, with slots provided on the surface of the side ears.

[0006] Preferably, the top of the water storage box is provided with filter holes, and the bottom of the water storage box is provided with drain outlets on both sides, with a control valve inside the drain outlet.

[0007] Preferably, a float plate is slidably connected inside the water storage box, and a first support and a second support are fixed on both sides of the bottom of the water storage box cavity, with a limit groove provided at the bottom end of the first support. The bottom of both sides of the float is fixed with a hoisting rope, which is slidably connected to the limiting grooves at the bottom of the two first uprights. One end of the hoisting rope is fixed with a limiting plate, and the two ends of the limiting plate abut against the first upright and the second upright respectively. Water inlet grooves are opened on both sides of the float. A second spring is fixed on the surface of the limiting plate. One end of the second spring passes through the water inlet groove and is fixed to the top of the inner cavity of the water storage box. Limiting rods are fixed on both sides of the bottom of the inner cavity of the water storage box near the support cone.

[0008] Preferably, support rods are fixed on both sides of the top of the floating plate, a first connector is fixed to the surface of the support rod, a flap is hinged to the surface of the first connector, a buckle plate is fixed to the bottom of the flap, a storage cavity is opened inside the flap, a telescopic plate is slidably connected inside the storage cavity, and a magnet is fixed inside the two flaps on opposite sides.

[0009] Preferably, a second connector is fixed to the bottom of each of the two limiting plates, and an auxiliary ring is fixed to the bottom of the second connector. The auxiliary ring is slidably connected to the support cone, and four extension rods are evenly fixed to the bottom of the auxiliary ring.

[0010] Preferably, a fixing ring is fixed to the surface of the support cone below the auxiliary ring. The top of the fixing ring has a mating hole, and the inside of the fixing ring has a T-shaped ring groove. A pressing ring is movably connected inside the T-shaped ring groove. A sliding block is slidably connected inside the T-shaped ring groove below the pressing ring. A fixing plate is fixed to the bottom of the sliding block. A locking bolt is slidably connected inside the fixing plate, and an extension plate is fixed to one end of the locking bolt.

[0011] Preferably, a positioning plate is fixed to the bottom of the extension plate, a fixing bolt is fixed to one side of the positioning plate, and a rotating rod is rotatably connected to the surface of the fixing bolt.

[0012] Preferably, the surface of the fixing ring is fixed with four limiting bolts, and the four limiting bolts are spaced at equal angles. The surface of the limiting bolts is slidably connected with an arc-shaped frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This UAV-based mapping device uses an auxiliary cone as an auxiliary structure, which is inserted into the soil around the support cone to assist in traction of the support cone, thereby improving the stability of the support cone and the target. At the same time, the insert plate extends from the inside of the movable groove and is inserted into the soil. The soil presses down on the insert plate, reducing the difficulty of removing the auxiliary cone and thus improving the stability of the auxiliary cone.

[0014] 2. In rainy weather, this UAV-based mapping device uses rainwater collected in a water storage box to lift a floating plate. This causes the floating plate to push the support rod out of the water storage box, which in turn drives the flapping plate and the latching plate to release them from the slot. Then, under the influence of gravity, the flapping plate flips relative to the target, and the telescopic plate slides out from the storage cavity, thus forming a protective cover above the target. This reduces the erosion of the target by rainwater and improves the accuracy of UAV mapping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a cross-sectional view of the structure of the present invention; Figure 4 This is a schematic diagram of the initial state of the flap of the present invention; Figure 5 This is a schematic diagram of the target structure of the present invention; Figure 6 This is a schematic diagram of the structure of the float, the hoisting rope, and the limiting plate of the present invention; Figure 7 This is a cross-sectional view of the auxiliary cone structure of the present invention; Figure 8 This is a schematic diagram of the structure of the support rod, sliding cone, and insert plate of the present invention; Figure 9 This is a schematic diagram of the cross plate of the present invention; Figure 10 This is a schematic diagram of the structure of the fixing ring and the arc-shaped frame of the present invention; Figure 11 for Figure 3 A magnified view of a section at point A in the middle; Figure 12 for Figure 3 A magnified view of a section at point B.

[0016] In the diagram: 1. Support cone; 11. Target; 12. Side ear; 13. Slot; 2. Water storage box; 201. Filter hole; 21. Steel rope; 22. Hook; 23. Limiting ring; 24. Support column; 25. Turntable; 26. Pressing plate; 27. Support rod; 28. Drain outlet; 3. Auxiliary cone; 31. Baffle; 32. Cross plate; 33. Sliding cone; 34. Cross groove; 35. Movable groove; 36. Insertion plate; 37. Vertical plate; 38. First spring; 4. Float plate; 41. First upright; 411. Second upright; 42. Limiting groove; 43. Suspension rope; 44. 45. Limiting plate; 46. Water inlet trough; 47. Second spring; 48. Limiting rod; 59. Support rod; 50. First connecting piece; 51. Flip plate; 52. Buckle plate; 53. Storage cavity; 54. Telescopic plate; 55. Magnet; 60. Second connecting piece; 61. Auxiliary ring; 62. Extension rod; 73. Fixing ring; 74. Docking hole; 75. T-shaped ring groove; 76. Pressing ring; 77. Sliding block; 78. Fixing plate; 79. Extension plate; 70. Positioning plate; 71. Fixing bolt; 80. Rotating rod; 81. Limiting bolt; 82. Arc frame. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1:

[0019] Please see Figure 1-12 A UAV-based mapping device includes a support cone 1, a water storage box 2 fixed on the surface of the support cone 1, four steel ropes 21 evenly fixed on the bottom of the water storage box 2, a hook 22 fixed on one end of each steel rope 21, a limit ring 23 slidably connected to the surface of the hook 22, a support column 24 fixed on the bottom of the limit ring 23, a turntable 25 fixed on the bottom of the support column 24, a pressing plate 26 fixed on the bottom of the turntable 25, and a support rod 27 fixed on the bottom of the pressing plate 26. The surface of the turntable 25 is threaded with an auxiliary cone 3. A baffle 31 is fixed to the inner wall of the auxiliary cone 3. A cross plate 32 is fixed to the bottom of the inner cavity of the auxiliary cone 3. A sliding cone 33 is provided inside the auxiliary cone 3. A cross groove 34 is opened on the surface of the sliding cone 33. The cross groove 34 is slidably connected to the cross plate 32. A movable groove 35 is opened on the surface of the auxiliary cone 3. A split plate 36 is slidably connected inside the movable groove 35. A vertical plate 37 is fixed to the bottom of the split plate 36 near the support rod 27. A first spring 38 is fixed to the surface of the vertical plate 37. One end of the first spring 38 is fixed to the inner wall of the auxiliary cone 3. A target 11 is fixed to the top of the support cone 1, and side ears 12 are fixed to both sides of the target 11. A slot 13 is provided on the surface of the side ears 12. A filter hole 201 is provided on the top of the water storage box 2. Drain outlets 28 are provided on both sides of the bottom of the inner cavity of the water storage box 2. A control valve is provided inside the drain outlet 28. Specifically, in actual operation, the support cone 1 is first inserted into the target soil. Then, at a suitable angle, four auxiliary cones 3 are inserted around the support cone 1. During the insertion of the auxiliary cones 3, the auxiliary cones 3 are first inserted into the soil. During the insertion process, since the cross groove 34 slides onto the surface of the cross plate 32, the cone at the bottom of the sliding cone 33 is replaced by the cone at the bottom of the auxiliary cone 3, making it easier for the auxiliary cone 3 to be inserted into the soil. After the auxiliary cone 3 is inserted into the soil, the limiting ring 23 is rotated, which drives the support column 24 to rotate. The support column 24 drives the turntable 25 to rotate, so that the turntable 25 drives the pressing plate 26 and the support rod 27 to move towards the bottom of the auxiliary cone 3. During the movement, the pressing plate 26 and the support rod 27 first contact the top of the sliding cone 33, pushing the sliding cone 33 towards the soil of the auxiliary cone 3, so that the sliding cone 33 extends from the inside of the auxiliary cone 3 towards the soil. During the movement of the pressing plate 26, it contacts each insert plate 36 and pushes the insert plates 36, causing the insert plates 36 to extend from the inside of the auxiliary cone 3 into the soil around the auxiliary cone 3, so that the insert plates 36 are inserted into the soil in the horizontal direction of the auxiliary cone 3, and the soil is pressed onto the surface of the insert plates 36, reducing the probability of the insert plates 36 and the auxiliary cone 3 being pulled out and loosened. At the same time, the sliding cone 33 extends out from the inside of the auxiliary cone 3 and inserts into the soil in the vertical direction of the auxiliary cone 3, thereby increasing the insertion depth of the auxiliary cone 3 from the side and bottom. This makes it more difficult to remove the auxiliary cone 3 once it is inserted into the soil. Then, the steel cable 21 is pulled and the hook 22 is locked to the surface of the limiting ring 23. Through the cooperation of the auxiliary cone 3 and the steel cable 21, the support cone 1 is pulled from all sides, thereby improving the stability of the support cone 1 after it is inserted into the soil. This reduces the risk of the support cone 1 tipping over or swaying and makes the support cone 1 more balanced. Furthermore, when the sliding cone 33 extends from the interior of the auxiliary cone 3 toward the soil in the vertical direction of the auxiliary cone 3, the soil enters the cross groove 34, which further presses the cross groove 34 and the sliding cone 33, further increasing the pressure on the sliding cone 33, making the sliding cone 33 more difficult to remove, and further improving the stability of the auxiliary cone 3, making the auxiliary cone 3 more stable in traction supporting the cone 1.

[0020] It should be noted that the length of the steel rope 21 can be selected according to the site requirements. Secondly, when the sliding cone 33 is inserted into the soil, the hexagonal opening on the surface of the limiting ring 23 corresponds to the electric drill. The electric drill drives the limiting ring 23 to rotate. Compared with the traditional method of inserting cuttings by chiseling and hammering, this invention reduces the manpower consumption of inserting the auxiliary cone 3 and the sliding cone 33 into the soil and improves the convenience of cutting. During later maintenance, the limit ring 23 can be rotated in the opposite direction by an electric drill, so that the limit ring 23 is removed from the cover of the auxiliary cone 3. Then, by holding the limit ring 23, the auxiliary cone 3 can be pulled out of the soil, thereby improving the convenience of later maintenance of the auxiliary cone 3.

[0021] Example 2:

[0022] A float plate 4 is slidably connected inside the water storage box 2. A first support 41 and a second support 411 are fixed on both sides of the bottom of the water storage box 2. A limit groove 42 is opened at the bottom of the first support 41. A suspension rope 43 is fixed at the bottom of both sides of the float plate 4. The suspension rope 43 is slidably connected to the limit groove 42 at the bottom of the two first supports 41. A limit plate 44 is fixed at one end of the suspension rope 43. The two ends of the limit plate 44 abut against the first support 41 and the second support 411 respectively. A water inlet groove 45 is opened on both sides of the float plate 4. A second spring 46 is fixed on the surface of the limit plate 44. One end of the second spring 46 passes through the water inlet groove 45 and is fixed to the top of the water storage box 2. Limit rods 47 are fixed on both sides of the bottom of the water storage box 2 near the support cone 1. Support rods 5 are fixed on both sides of the top of the floating plate 4. A first connector 51 is fixed on the surface of the support rod 5. A flap 52 is hinged on the surface of the first connector 51. A buckle plate 53 is fixed at the bottom of the flap 52. A storage cavity 54 is opened inside the flap 52. A telescopic plate 55 is slidably connected inside the storage cavity 54. A magnet 56 is fixed inside the two flaps 52 on opposite sides. Specifically, based on Embodiment 1, when it rains, in order to reduce the erosion of the target 11 by rainwater, the rainwater is collected into the interior of the water storage box 2 through the filter hole 201. Then, the rainwater enters the bottom of the inner cavity of the water storage box 2 through the water inlet trough 45. As the rainwater is gradually collected, the float 4 floats on the surface of the rainwater. As the water level gradually rises, the float 4 slides towards the top of the water storage box 2 inside the water storage box 2. This causes the float 4 to move the support rod 5 and the first connector 51 toward the support cone 1, and the first connector 51 to move the two flaps 52 toward the target 11. The flaps 52 then move the buckle plate 53 synchronously. During the movement, the buckle plate 53 moves out of the slot 13, thereby releasing the side ear 12 from limiting the buckle plate 53 and the flaps 52. At this time, the two flaps 52 flip toward the center of the target 11 under the action of gravity, thereby causing the two flaps 52 to abut against each other and be attracted and fixed by the magnet 56 inside the flaps 52. When the two flip plates 52 complete their flipping and adsorption fixation, the telescopic plate 55, under the influence of gravity, slides out from the inside of the storage cavity 54, thereby filling the hollow part of the flip plate 52. Thus, through the cooperation of the flip plate 52 and the telescopic plate 55, a rain cover is formed above the support cone 1, thereby reducing the erosion of the target 11 by rainwater, reducing the wear of the target 11 markings, improving the service life of the target 11, and improving the accuracy of identification during subsequent UAV mapping. Furthermore, when rainwater pushes the float 4 to slide towards the top of the water storage box 2, the float 4 pulls the suspension rope 43, causing the suspension rope 43 to pull the limiting plate 44 down inside the first frame 41 and the second frame 411, causing the limiting plate 44 to drive the second connecting piece 6 to move towards the bottom of the support cone 1. During the movement, the second connecting piece 6 drives the auxiliary ring 61 to slide down along the vertical direction of the support cone 1. This causes the center of the support cone 1 to drop, which increases the overall weight of the support cone 1 after it catches rainwater, reducing the probability of the support cone 1 tipping over and swaying, and improving the stability of the support cone 1 when facing wind and rain. At the same time, the drop in the auxiliary ring 61 can further lower the center of the support cone 1 and the water storage box 2, making the support cone 1 more stable and further improving its stability when facing wind and rain.

[0023] It should be noted that the drain outlet 28 is equipped with a control valve, and a sensor can be installed inside the water storage box 2 to sense the weight of the rainwater in the water storage box 2. When the rainwater is full and the pressure reaches the rated pressure, the control valve can be activated to drain the water. During the drainage process, the water level below the float plate 4 gradually decreases, causing the float plate 4 to gradually return to the top of the limit rod 47. At the same time, the limit plate 44 returns to its original position under the tension of the second spring 46, causing the limit plate 44 to pull the second connecting piece 6 and the auxiliary ring 61 to return to their original positions. The two flaps 52 are initially tilted relative to each other. When the water storage box 2 does not collect rainwater, the buckle plate 53 is snapped into the slot 13. The slot 13 limits the buckle plate 53 and the flaps 52, while the telescopic plate 55 is retracted into the storage cavity 54. This allows the target 11 to be exposed to the measurement range of the drone when the weather is clear.

[0024] Example 3:

[0025] The bottom of each of the two limiting plates 44 is fixed with a second connecting piece 6. The bottom of the second connecting piece 6 is fixed with an auxiliary ring 61. The auxiliary ring 61 is slidably connected to the support cone 1. Four extension rods 62 are evenly fixed at the bottom of the auxiliary ring 61. A fixing ring 7 is fixed on the surface of the support cone 1 below the auxiliary ring 61. A docking hole 701 is opened at the top of the fixing ring 7. A T-shaped ring groove 71 is opened inside the fixing ring 7. A pressing ring 72 is movably connected inside the T-shaped ring groove 71. A sliding block 73 is slidably connected inside the T-shaped ring groove 71 below the pressing ring 72. A fixing plate 74 is fixed at the bottom of the sliding block 73. A locking bolt 75 is slidably connected inside the fixing plate 74. An extension plate 76 is fixed at one end of the locking bolt 75. A positioning plate 77 is fixed to the bottom of the extension plate 76. A fixing bolt 78 is fixed to one side of the positioning plate 77. A rotating rod 79 is rotatably connected to the surface of the fixing bolt 78. Four limiting bolts 8 are fixed to the surface of the fixing ring 7, and the four limiting bolts 8 are spaced at equal angles. An arc-shaped frame 81 is slidably connected to the surface of the limiting bolts 8. Specifically, based on Embodiment 1 and Embodiment 2, when the target site for installation of the present invention is located in a rocky, sloping, or hard soil area, and the support cone 1 is difficult to insert into the ground, the nut outside the locking bolt 75 can be rotated so that the locking bolt 75 can drive the extension plate 76 to slide on the surface of the fixed plate 74, so that the extension plate 76 can drive the positioning plate 77 and the rotating rod 79 to extend and retract. Each rotating rod 79 is height-adjusted relative to the current target location. Then, the nut on the surface of the fixing bolt 78 is rotated, and then the support angle of the rotating rod 79 relative to the ground is rotated. The rotating rod 79 replaces the cone of the support cone 1 and supports it on the ground, so that the support cone 1 is kept in a vertical state and the target 11 is kept in a horizontal state. Simultaneously, the auxiliary cone 3 in Embodiment 1 is used to assist in the traction of the support cone 1, which can further increase the stability of the support cone 1 in rock, slope or hard soil areas, thereby improving the stability of the support cone 1 and the target 11. Furthermore, when the target site is in an irregular and uneven state, the position of each sliding block 73 in the T-shaped ring groove 71 can be adjusted to strengthen the support strength of the corresponding position. After adjusting the position of each sliding block 73, the arc frame 81 is sleeved on the outside of the limiting bolt 8, and the nut on the outside of the limiting bolt 8 is rotated to lock the limiting bolt 8 on the surface of the fixing ring 7, so that the bottom of the limiting bolt 8 abuts against the surface of the fixing plate 74, so that the fixing plate 74 is fixed in the designated position and cannot slide, thereby improving the fixing strength of the sliding block 73 in the designated position, thereby improving the stability of the sliding block 73 and the rotating rod 79 on the ground and on the support cone 1. Furthermore, in rainy weather, when the float 4 pulls the hoisting rope 43 to lower the limiting plate 44, the limiting plate 44 causes the second connecting piece 6 and the auxiliary ring 61 to descend along the surface of the support cone 1, so that the second connecting piece 6 causes the extension rod 62 to descend. During the descent, the extension rod 62 inserts into the docking hole 701, thereby causing the bottom end of the extension rod 62 to abut against the pressing ring 72. Therefore, the extension rod 62 can press the pressing ring 72, and the pressing ring 72 can press the sliding block 73, thereby improving the stability of the sliding block 73 in the T-shaped ring groove 71, and thus improving the stability of the support cone 1 and the target 11.

[0026] It should be noted that the mating hole 701 is connected to the T-shaped annular groove 71, and the number of mating holes 701 is equal to the number of extension rods 62, and the mating hole 701 is located directly below the extension rod 62.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A UAV-based mapping device, comprising a support cone (1), characterized in that: A water storage box (2) is fixed on the surface of the support cone (1). Four steel ropes (21) are evenly fixed on the bottom of the water storage box (2). A hook (22) is fixed on one end of the steel rope (21). A limit ring (23) is slidably connected to the surface of the hook (22). A support column (24) is fixed on the bottom of the limit ring (23). A turntable (25) is fixed on the bottom of the support column (24). A pressing plate (26) is fixed on the bottom of the turntable (25). A support rod (27) is fixed on the bottom of the pressing plate (26). The turntable (25) is threaded with an auxiliary cone (3), and a baffle (31) is fixed to the inner wall of the auxiliary cone (3). A cross plate (32) is fixed to the bottom of the inner cavity of the auxiliary cone (3). A sliding cone (33) is provided inside the auxiliary cone (3). A cross groove (34) is opened on the surface of the sliding cone (33). The cross groove (34) is slidably connected to the cross plate (32). A movable groove (35) is opened on the surface of the auxiliary cone (3). A split plate (36) is slidably connected inside the movable groove (35). A vertical plate (37) is fixed to the bottom of the split plate (36) near the support rod (27). A first spring (38) is fixed to the surface of the vertical plate (37). One end of the first spring (38) is fixed to the inner wall of the auxiliary cone (3).

2. The UAV-based mapping device according to claim 1, characterized in that: The top of the support cone (1) is fixed with a target (11), and the two sides of the target (11) are fixed with side ears (12), and the surface of the side ears (12) is provided with slots (13).

3. The UAV-based mapping device according to claim 2, characterized in that: The top of the water storage box (2) is provided with a filter hole (201), and the two sides of the bottom of the inner cavity of the water storage box (2) are provided with drain outlets (28), and the inside of the drain outlets (28) is provided with a control valve.

4. The UAV-based mapping device according to claim 3, characterized in that: The water storage box (2) is slidably connected to a float plate (4). The bottom of the water storage box (2) is fixed with a first support (41) and a second support (411) on both sides. The bottom end of the first support (41) is provided with a limit groove (42). The bottom of both sides of the float (4) is fixed with a hoisting rope (43). The hoisting rope (43) is slidably connected to the limiting groove (42) at the bottom of the two first uprights (41). One end of the hoisting rope (43) is fixed with a limiting plate (44). The two ends of the limiting plate (44) abut against the first upright (41) and the second upright (411) respectively. Water inlet grooves (45) are opened on both sides of the float (4). A second spring (46) is fixed on the surface of the limiting plate (44). One end of the second spring (46) passes through the water inlet groove (45) and is fixed to the top of the inner cavity of the water storage box (2). Limiting rods (47) are fixed on both sides of the bottom of the inner cavity of the water storage box (2) near the support cone (1).

5. The UAV-based mapping device according to claim 4, characterized in that: The top of the float (4) is fixed with two support rods (5), and the surface of the support rods (5) is fixed with a first connector (51). The surface of the first connector (51) is hinged with a flap (52). The bottom of the flap (52) is fixed with a buckle plate (53). The flap (52) has a storage cavity (54) inside. The storage cavity (54) is slidably connected with a telescopic plate (55). Magnets (56) are fixed inside the two flaps (52) on opposite sides.

6. The UAV-based mapping device according to claim 5, characterized in that: The bottom of each of the two limiting plates (44) is fixed with a second connector (6), and the bottom of the second connector (6) is fixed with an auxiliary ring (61). The auxiliary ring (61) is slidably connected to the support cone (1), and four extension rods (62) are evenly fixed at the bottom of the auxiliary ring (61).

7. The UAV-based mapping device according to claim 6, characterized in that: A fixing ring (7) is fixed on the surface of the support cone (1) below the auxiliary ring (61). A docking hole (701) is opened at the top of the fixing ring (7). A T-shaped ring groove (71) is opened inside the fixing ring (7). A pressing ring (72) is movably connected inside the T-shaped ring groove (71). A sliding block (73) is slidably connected inside the T-shaped ring groove (71) below the pressing ring (72). A fixing plate (74) is fixed at the bottom of the sliding block (73). A locking bolt (75) is slidably connected inside the fixing plate (74). An extension plate (76) is fixed at one end of the locking bolt (75).

8. The UAV-based mapping device according to claim 7, characterized in that: A positioning plate (77) is fixed to the bottom of the extension plate (76), and a fixing bolt (78) is fixed to one side of the positioning plate (77). A rotating rod (79) is rotatably connected to the surface of the fixing bolt (78).

9. The UAV-based mapping device according to claim 8, characterized in that: The surface of the fixed ring (7) is fixed with four limiting bolts (8), and the four limiting bolts (8) are spaced at equal angles. The surface of the limiting bolts (8) is slidably connected with an arc frame (81).

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