An air detection device based on drone

Abstract

The present invention discloses an air detection device based on a drone, comprising a drone body, a guide mechanism is provided below the drone body, a reset mechanism is provided on one side of the guide mechanism, a limit mechanism is provided below the reset mechanism, a push mechanism is provided on one side of the limit mechanism, a stirring sampling mechanism is provided at the lower end of the drone body, and an exhaust sample retention mechanism is provided on one side of the stirring sampling mechanism. The beneficial effect of the present invention is that the obtained sample can be stirred to make it evenly mixed, and then a small amount of sample can be taken, and more samples at different positions can be carried in the same carrying space, reducing the number of flights of the drone and saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle equipment, and more specifically, to an air detection device based on a unmanned aerial vehicle. Background Art

[0002] With the development of my country's industry, a lot of industrial waste gas is discharged from the chimney. Especially in winter, the air pollution is very serious. In some dangerous places or places that are difficult for people to reach, or where there is a gas leak that is harmful to the human body, there are safety hazards if the air is directly tested manually.

[0003] In the prior art, an air detector can be directly installed on a drone. The drone can quickly reach locations that are difficult for staff to reach by flying, and sample the air for testing. However, there are some problems in its use. In wide areas in the sky, due to the fluidity of the air, the test results of the air detector will be biased, resulting in inaccurate test results. It is necessary to sample the air and move it to a laboratory for precise testing. General air sampling devices will directly extract the air and cannot isolate the obtained samples from the external environment, resulting in a high error in the obtained samples. In addition, general air sampling devices cannot stir the samples to mix them evenly, and often require the extraction of a large amount of air as a sample. The carrying capacity of the drone is limited, resulting in a limited number of samples obtained, which is inconvenient to use. Summary of the invention

[0004] In view of the above defects, the present invention provides an air detection device based on a drone to solve the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An air detection device based on a drone comprises a drone body, a guide mechanism is arranged below the drone body, a reset mechanism is arranged on one side of the guide mechanism, a limit mechanism is arranged below the reset mechanism, a push mechanism is arranged on one side of the limit mechanism, a stirring sampling mechanism is arranged at the lower end of the drone body, an exhaust sample retention mechanism is arranged on one side of the stirring sampling mechanism,

[0007] The stirring sampling mechanism includes a holding platform fixedly installed on one side of the lower surface of the drone body, a sampling barrel is provided on one side of the holding platform, a plurality of connecting columns are installed on one side of the sampling barrel, one end of the connecting column is fixedly connected to the holding platform, a first rolling bearing is provided in the sampling barrel, a first movable piston is installed on the outer side of the first rolling bearing, a telescopic rotating shaft is provided in the sampling barrel, a plurality of L-shaped stirring shafts are installed on the telescopic rotating shaft, one end of the telescopic rotating shaft is inserted into the first rolling bearing, a second rolling bearing is installed on the other end of the telescopic rotating shaft, a second movable piston is installed on the outer side of the second rolling bearing, a square stretching rod is connected to one end of the telescopic rotating shaft, the square stretching rod is located on one side of the first movable piston, a guide shaft is provided on one side of the square stretching rod, the guide shaft is located on one side of the sampling barrel, a third rolling bearing is installed on the outer side of the guide shaft, a fixing rod is installed on one side of the third rolling bearing, one end of the fixing rod is fixedly connected to the holding platform, a square through hole is opened on the guide shaft, one end of the square stretching rod The rod extends into the square through hole, and a fourth rolling bearing is installed on one side surface of the square stretching rod located in the square through hole. A moving rod is provided on one side of the square stretching rod, and one end of the moving rod is inserted into the fourth rolling bearing. One end of the moving rod extends to the outside of the square through hole. A connecting platform is installed on one end of the moving rod located outside the square through hole. Two electric telescopic rods are provided on one side of the connecting platform. The electric telescopic rod is located above and below the sampling tube. The telescopic end of the electric telescopic rod is fixedly connected to the connecting platform. The fixed end of the electric telescopic rod is installed with a fixed platform. One end of the fixed platform is fixedly connected to the containing platform. A first rack is installed on one side surface of the first moving piston, and a fifth rolling bearing is installed on one side of the containing platform. A rotating rod is provided on one side of the fifth rolling bearing, and one end of the rotating rod is inserted into the fifth rolling bearing. A first gear is installed on the rotating rod, and the first gear is meshed with the first rack. A first bevel gear is installed on one side of the first gear, and a second bevel gear is installed on the guide shaft, and the second bevel gear is meshed with the first bevel gear.

[0008] The exhaust sample retention mechanism comprises an exhaust pipe fixedly installed on one side of the sampling cylinder, the exhaust pipe is provided with two connecting holes, a sample retention cylinder is provided on one side of the exhaust pipe, one end of the sample retention cylinder passes through the two connecting holes, limit plates are installed on both sides of the sample retention cylinder, two ventilation ports are provided on the sample retention cylinder, ten third movable pistons are provided in the sample retention cylinder, a connecting ring is installed on the outermost movable piston, nine connecting lines are provided in the sample retention cylinder, each connecting line connects two adjacent third movable pistons, a fixing column is installed at one end of the sampling cylinder, a one-way bearing is installed on the fixing column, a take-up wheel is installed on the one-way bearing, a connecting rope is wound around the take-up wheel, the connecting rope is bundled and connected with the connecting ring, a ratchet is installed on the surface of one side of the take-up wheel, a sixth rolling bearing is installed on one side of the one-way bearing, a second gear is installed on the sixth rolling bearing, a ratchet is installed on one side of the second gear, the ratchet is connected to the ratchet, a second rack is provided on one side of the second gear, the second rack is meshed with the second gear, an L-shaped connecting shaft is installed at one end of the second rack, and one end of the L-shaped connecting shaft is fixedly connected to the first movable piston.

[0009] Furthermore, the telescopic rotating shaft includes a first rotating column with one end inserted into the first rolling bearing, a square groove is opened on the side of the first rotating column away from the first rolling bearing, a second rotating column is provided on one side of the first rotating column, one end of the second rotating column is inserted into the second rolling bearing, a square connecting rod is installed on the other end of the second rotating column, one end of the square connecting rod is inserted into the square groove, a plurality of L-shaped limit rods are installed on the end of the first rotating column close to the square groove, a circular baffle is installed on the end of the second rotating column close to the square connecting rod, a plurality of limit holes are opened on the circular baffle, the limit holes correspond one-to-one to the L-shaped limit rods, and an intercepting plate is installed on the end of the L-shaped limit rod.

[0010] Furthermore, the guiding mechanism includes a first guide groove located on both sides of the first rack, a plurality of first guide rods are provided on one side of the first rack, one end of the first guide rod is fixedly mounted on the holding table, two first guide blocks are installed on the other end of the first guide rod, a first guide wheel is installed on the inner surface of the first guide block, the first guide wheel is located in the first guide groove, second guide grooves are opened on both sides of the second rack, a second guide rod is provided on one side of the second rack, one end of the second guide rod is fixedly mounted on the sampling tube, two second guide blocks are installed on the other end of the second guide rod, a second guide wheel is installed on the inner surface of the second guide block, and the second guide wheel is located in the second guide groove.

[0011] Furthermore, the reset mechanism includes spring pins fixedly mounted on the upper and lower ends of the sampling tube, a movable plate is provided on one side of the sampling tube, the movable plate is fixedly connected to the movable ends of the two spring pins, an annular baffle is installed on the movable plate, an annular groove is provided on one side of the second movable piston, and one end of the annular baffle is located in the annular groove.

[0012] Furthermore, the limiting mechanism includes a supporting platform fixedly installed at the lower end of the placing platform, a connecting block is installed on the upper surface of the supporting platform, the upper end of the connecting block is fixedly connected to the lower end of the UAV body, a lifting platform is provided under the supporting platform, universal wheels are installed at the four corners of the lower surface of the lifting platform, guide columns are installed at the four corners of the upper surface of the lifting platform, four guide holes are opened on the supporting platform, the guide holes correspond to the guide columns one by one, the upper ends of the guide columns pass through the guide holes and extend to the top of the supporting platform, an intercepting platform is installed on the guide columns, the intercepting platform is located above the guide holes, a lifting plate is provided above the lifting platform, the lifting plate is located above the exhaust pipe, both sides of the lower surface of the lifting platform are fixedly connected to the upper ends of the two guide columns on the front side, two intercepting rods are installed on the lower surface of the lifting plate, intercepting holes are opened on the limiting plate, and the lower ends of the intercepting rods are inserted into the intercepting holes.

[0013] Furthermore, the pushing mechanism includes a moving platform fixedly installed on the upper surface of the lifting platform, a square opening is opened on the supporting platform, the upper end of the moving platform passes through the square opening and extends to the bottom of the exhaust pipe, a reset platform is installed on one side of the upper surface of the moving platform, a moving block is provided on one side of the reset platform, the reset platform and the moving platform are connected by a reset spring, an interception block is installed at the end of the sample tube, two pushing columns are installed on the surface of the moving block close to the interception block, an L-shaped pushing rod is installed at one end of the second rack, the L-shaped pushing rod is located above the reset spring, two sliding grooves are opened on the upper surface of the moving platform, the sliding grooves are located below the moving block, pulleys are installed on both sides of the lower surface of the moving block, and the lower end of the pulley is located in the sliding groove.

[0014] Furthermore, two sealing gaskets are installed on the sample retaining tube. When one end of the limiting plate contacts the exhaust pipe, the two sealing gaskets are located at the intersection of the sample retaining tube and the connecting hole, and the ventilation port is located between the two sealing gaskets.

[0015] Furthermore, the intercepting block is provided with ventilation holes.

[0016] Furthermore, an air detector is installed on one side of the lower end of the drone body.

[0017] The beneficial effects of the present invention are as follows: the air detection device is moved to a position that is not easily accessible to people by using a drone, thereby improving work efficiency and reducing potential safety hazards. When the drone moves, the air quality is roughly detected by an air detector. If the air quality is qualified, no sampling is performed. When the air quality is unqualified, sampling is performed, thereby ensuring that the samples obtained are the required samples. When sampling, the first movable piston can be driven to move in the sampling tube by extending the electric telescopic rod, and a large amount of local air can be sampled by pulling the first movable piston and the second movable piston into the sampling tube. When sampling, the transmission between gears is used. The obtained samples can be stirred to make them evenly mixed. After the sampling is completed, the electric telescopic rod is shortened, the first movable piston and the second movable piston are moved to the outside of the sampling tube, and the air is discharged through the exhaust pipe. When the air passes through the exhaust pipe, the air enters the sample retention tube through the ventilation port, and through the transmission between the gears, the take-up wheel pulls up the connecting rope and moves the third movable piston, so that a small amount of evenly mixed air is retained. The obtained samples are more representative, and the amount of samples obtained is small. More samples from different positions can be carried in the same carrying space, reducing the number of flights of the drone and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an air detection device based on a drone according to the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0021] Figure 4 is a top view schematic diagram of an air detection device based on a drone according to the present invention;

[0022] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle;

[0023] Figure 6 yes Figure 4 A partial enlarged view of point D in the middle;

[0024] Figure 7 yes Figure 4 A partial enlarged view of point E in the middle;

[0025] Figure 8 yes Figure 4 A partial enlarged view of the F in the middle;

[0026] Fig. 9 yes Figure 4 A partial enlarged view of the G in the middle;

[0027] Fig.10 It is a schematic diagram of the connection relationship between the fixed column, the second gear and the take-up wheel of the present invention;

[0028] Fig.11 It is a schematic diagram of the connection relationship between the spring ejector pin and the movable plate of the present invention;

[0029] Fig.12 It is a schematic diagram of the connection relationship between the circular baffle and the circular groove of the present invention;

[0030] In the figure, 1, drone body; 2, holding table; 3, sampling tube; 4, connecting column; 5, first rolling bearing; 6, first movable piston; 7, telescopic rotating shaft; 8, L-shaped stirring shaft; 9, second rolling bearing; 10, second movable piston; 11, square stretching rod; 12, guide shaft; 13, third rolling bearing; 14, fixed rod; 15, square through hole; 16, fourth rolling bearing; 17, movable rod; 18, connecting table; 19, electric telescopic rod; 20, fixed table; 21, first rack ; 22, fifth rolling bearing; 23, rotating rod; 24, first gear; 25, first bevel gear; 26, second bevel gear; 27, exhaust pipe; 28, connecting hole; 29, sample tube; 30, limit plate; 31, ventilation port; 32, third movable piston; 33, connecting ring; 34, connecting line; 35, fixing column; 36, one-way bearing; 37, take-up wheel; 38, connecting rope; 39, ratchet; 40, sixth rolling bearing; 41, second gear; 42, ratchet; 43, second rack; 4 4. L-shaped connecting shaft; 45. first rotating column; 46. square groove; 47. second rotating column; 48. square connecting rod; 49. L-shaped limiting rod; 50. circular baffle; 51. limiting hole; 52. intercepting plate; 53. first guide groove; 54. first guide rod; 55. first guide block; 56. first guide wheel; 57. second guide groove; 58. second guide rod; 59. second guide block; 60. second guide wheel; 61. spring ejector; 62. moving plate; 63. circular baffle; 64 , annular groove; 65, support platform; 66, connecting block; 67, lifting platform; 68, universal wheel; 69, guide column; 70, guide hole; 71, interception platform; 72, lifting plate; 73, interception rod; 74, interception hole; 75, moving platform; 76, square opening; 77, reset platform; 78, moving block; 79, reset spring; 80, interception block; 81, push column; 82, L-shaped push rod; 83, slide groove; 84, pulley; 85, sealing gasket; 86, air vent; 87, air detector. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-12 As shown: An air detection device based on a drone comprises a drone body 1, a guide mechanism is arranged below the drone body 1, a reset mechanism is arranged on one side of the guide mechanism, a limit mechanism is arranged below the reset mechanism, a push mechanism is arranged on one side of the limit mechanism, a stirring sampling mechanism is arranged at the lower end of the drone body 1, an exhaust sampling mechanism is arranged on one side of the stirring sampling mechanism,

[0032] The stirring sampling mechanism includes a placing table 2 fixedly mounted on one side of the lower surface of the drone body 1, a sampling tube 3 is provided on one side of the placing table 2, a plurality of connecting columns 4 are installed on one side of the sampling tube 3, one end of the connecting column 4 is fixedly connected to the placing table 2, a first rolling bearing 5 is provided in the sampling tube 3, a first movable piston 6 is installed on the outer side of the first rolling bearing 5, a telescopic rotating shaft 7 is provided in the sampling tube 3, a plurality of L-shaped stirring shafts 8 are installed on the telescopic rotating shaft 7, one end of the telescopic rotating shaft 7 is inserted into the first rolling bearing 5, and a second rolling bearing 9 is installed on the other end of the telescopic rotating shaft 7. A second movable piston 10 is installed on the outside of the second rolling bearing 9, one end of the telescopic rotating shaft 7 is connected to a square stretching rod 11, the square stretching rod 11 is located on one side of the first movable piston 6, a guide shaft 12 is provided on one side of the square stretching rod 11, the guide shaft 12 is located on one side of the sampling tube 3, a third rolling bearing 13 is installed on the outside of the guide shaft 12, a fixed rod 14 is installed on one side of the third rolling bearing 13, one end of the fixed rod 14 is fixedly connected to the placing table 2, a square through hole 15 is opened on the guide shaft 12, one end of the square stretching rod 11 extends into the square through hole 15, and the square stretching rod 11 is provided on one side of the sampling tube 3. A fourth rolling bearing 16 is installed on one side of the rod 11 located in the square through hole 15, a moving rod 17 is provided on one side of the square stretching rod 11, one end of the moving rod 17 is inserted into the fourth rolling bearing 16, and one end of the moving rod 17 extends to the outside of the square through hole 15, and a connecting platform 18 is installed on one end of the moving rod 17 located outside the square through hole 15, and two electric telescopic rods 19 are provided on one side of the connecting platform 18, and the electric telescopic rod 19 is located above and below the sampling tube 3, and the telescopic end of the electric telescopic rod 19 is fixedly connected to the connecting platform 18, and a fixed end of the electric telescopic rod 19 is installed The first movable piston 6 is provided with a first rack 21 on one side surface thereof, a fifth rolling bearing 22 is provided on one side surface of the placing platform 2, a rotating rod 23 is provided on one side surface of the fifth rolling bearing 22, one end of the rotating rod 23 is inserted into the fifth rolling bearing 22, a first gear 24 is provided on the rotating rod 23, the first gear 24 is meshed with the first rack 21, a first bevel gear 25 is provided on one side surface of the first gear 24, a second bevel gear 26 is provided on the guide shaft 12, the second bevel gear 26 is meshed with the first bevel gear 25,

[0033] The exhaust sample retention mechanism includes an exhaust pipe 27 fixedly installed on one side of the sampling cylinder 3, two connecting holes 28 are provided on the exhaust pipe 27, a sample retention cylinder 29 is provided on one side of the exhaust pipe 27, one end of the sample retention cylinder 29 passes through the two connecting holes 28, and limit plates 30 are installed on both sides of the sample retention cylinder 29. Two ventilation ports 31 are provided on the sample retention cylinder 29, ten third movable pistons 32 are provided in the sample retention cylinder 29, a connecting ring 33 is installed on the outermost movable piston, nine connecting lines 34 are provided in the sample retention cylinder 29, and each connecting line 34 connects two adjacent third movable pistons 32, a fixed column 35 is installed at one end of the sampling cylinder 3, a one-way bearing 36 is installed on the fixed column 35, a take-up wheel 37 is installed on the one-way bearing 36, a connecting rope 38 is wound around the take-up wheel 37, and the connecting rope 38 is tied to the connecting ring 33 A ratchet 39 is installed on the surface of one side of the take-up wheel 37, a sixth rolling bearing 40 is installed on one side of the one-way bearing 36, a second gear 41 is installed on the sixth rolling bearing 40, a pawl 42 is installed on one side of the second gear 41, the pawl 42 is connected to the ratchet 39, a second rack 43 is provided on one side of the second gear 41, the second rack 43 is meshed with the second gear 41, an L-shaped connecting shaft 44 is installed at one end of the second rack 43, and one end of the L-shaped connecting shaft 44 is fixedly connected to the first movable piston 6. Through the extension of the electric telescopic rod 19 and the transmission between the gears, the air can be mixed evenly when sampling. When the electric telescopic rod 19 is shortened and the air is discharged, a small amount of the evenly mixed sample can be retained through the sample retention tube 29, and a larger number of samples can be carried in the same space.

[0034] The telescopic rotating shaft 7 includes a first rotating column 45 with one end inserted into the first rolling bearing 5, a square groove 46 is opened on the side of the first rotating column 45 away from the first rolling bearing 5, a second rotating column 47 is provided on one side of the first rotating column 45, one end of the second rotating column 47 is inserted into the second rolling bearing 9, and a square connecting rod 48 is installed on the other end of the second rotating column 47, and one end of the square connecting rod 48 is inserted into the square groove 46, a plurality of L-shaped limiting rods 49 are installed on the end of the first rotating column 45 close to the square groove 46, and a circular baffle 50 is installed on the end of the second rotating column 47 close to the square connecting rod 48, and a plurality of limiting holes 51 are opened on the circular baffle 50, and the limiting holes 51 correspond to the L-shaped limiting rods 49 one by one, and an intercepting plate 52 is installed at the end of the L-shaped limiting rod 49. Through the relative movement between the first rotating column 45 and the second rotating column 47, the air in the sampling tube 3 can be easily discharged through the exhaust pipe 27.

[0035] The guiding mechanism includes a first guide groove 53 located on both sides of the first rack 21, a plurality of first guide rods 54 are provided on one side of the first rack 21, one end of the first guide rod 54 is fixedly mounted on the placing table 2, two first guide blocks 55 are installed on the other end of the first guide rod 54, a first guide wheel 56 is installed on the inner surface of the first guide block 55, and the first guide wheel 56 is located in the first guide groove 53, second guide grooves 57 are opened on both sides of the second rack 43, a second guide rod 58 is provided on one side of the second rack 43, one end of the second guide rod 58 is fixedly mounted on the sampling tube 3, two second guide blocks 59 are installed on the other end of the second guide rod 58, a second guide wheel 60 is installed on the inner surface of the second guide block 59, and the second guide wheel 60 is located in the second guide groove 57. The moving direction of the first rack 21 and the second rack 43 can be guaranteed by the guiding action of the first guide wheel 56 and the second guide wheel 6.

[0036] The reset mechanism includes a spring ejector pin 61 fixedly installed at the upper and lower ends of the sampling tube 3, a movable plate 62 is provided on one side of the sampling tube 3, the movable plate 62 is fixedly connected to the movable ends of the two spring ejectors 61, a circular baffle plate 63 is installed on the movable plate 62, and a circular groove 64 is provided on one side of the second movable piston 10, one end of the circular baffle plate 63 is located in the circular groove 64, and the circular baffle plate 63 can be pushed into the circular groove 64 by the elastic force of the spring ejector pin 61 to prevent the second movable piston 10 from falling.

[0037] The limiting mechanism includes a support platform 65 fixedly installed at the lower end of the placing platform 2, a connecting block 66 is installed on the upper surface of the support platform 65, and the upper end of the connecting block 66 is fixedly connected to the lower end of the drone body 1. A lifting platform 67 is provided below the support platform 65, and universal wheels 68 are installed at the four corners of the lower surface of the lifting platform 67. Guide columns 69 are installed at the four corners of the upper surface of the lifting platform 67. Four guide holes 70 are opened on the support platform 65, and the guide holes 70 correspond to the guide columns 69 one by one. The upper ends of the guide columns 69 pass through the guide holes 70 and extend above the support platform 65. An interception platform 71 is installed on the guide column 69, and the interception platform 71 is located above the guide hole 70. A lifting plate 72 is provided above the lifting platform 67, and the lifting plate 72 is located above the exhaust pipe 27. Both sides of the lower surface of the lifting platform 67 are fixedly connected to the upper ends of the two guide columns 69 on the front side. Two interception rods 73 are installed on the lower surface of the lifting plate 72. An interception hole 74 is opened on the limit plate 30. The lower end of the interception rod 73 is inserted into the interception hole 74. Inserting the interception rod 73 into the interception hole 74 can prevent the sample tube 29 from falling when the drone body 1 is flying.

[0038] The pushing mechanism includes a moving platform 75 fixedly mounted on the upper surface of the lifting platform 67, a square opening 76 is opened on the support platform 65, the upper end of the moving platform 75 passes through the square opening 76 and extends to the bottom of the exhaust pipe 27, a reset platform 77 is installed on one side of the upper surface of the moving platform 75, and a moving block 78 is provided on one side of the reset platform 77, the reset platform 77 and the moving platform 75 are connected by a reset spring 79, an interception block 80 is installed at the end of the sample tube 29, and two pushing columns 81 are installed on the surface of the moving block 78 close to the interception block 80, and an L-shaped pushing rod 82 is installed at one end of the second rack 43, and the L-shaped pushing rod 82 is located above the reset spring 79, and two slide grooves 83 are opened on the upper surface of the moving platform 75, and the slide groove 83 is located below the moving block 78, and pulleys 84 are installed on both sides of the lower surface of the moving block 78, and the lower ends of the pulleys 84 are located in the slide grooves 83. After sampling is completed, the sample tube 29 can be pushed out by the L-shaped pushing rod 82 through the movement of the second rack 43, so that it is easy to remove it.

[0039] Two sealing gaskets 85 are installed on the sample cylinder 29. When one end of the limiting plate 30 contacts the exhaust pipe 27, the two sealing gaskets 85 are located at the intersection of the sample cylinder 29 and the connecting hole 28, and the ventilation port 31 is located between the two sealing gaskets 85, which can ensure the sealing of the sample cylinder 29 and prevent the outside air from mixing in.

[0040] The interception block 80 is provided with an air hole 86 to allow air to enter from the rear side, thereby facilitating the movement of the third movable piston 32 .

[0041] An air detector 87 is installed on one side of the lower end of the drone body 1, which can roughly detect the air quality and facilitate sampling.

[0042] In this embodiment, the electrical equipment of the device is remotely controlled by a remote control device matched with the drone body 1. The remote control technology of the drone is an existing mature technology and will not be described in detail.

[0043] Under normal circumstances, the drone body 1 falls on the ground, and the universal wheel 68 falls on the ground. The reaction force given to the universal wheel 68 by the ground can push the lifting platform 67 upward, and the upper end of the guide column 69 passes through the guide hole 70 to move upward, and the upper end of the movable platform 75 passes through the square opening 76 to move upward. The staff takes out the sample cylinder 29, and binds the connecting ring 33 on the outermost third movable piston 32 in the sample cylinder 29 with one end of the connecting rope 38, and the other end of the connecting rope 38 is fixedly connected to the take-up wheel 37. The staff moves all the third movable pistons 32 in the direction of the intercepting block 80, and by pushing the outermost third movable piston 32, due to the good air tightness between the third movable piston 32 and the sample cylinder 29, the air in the adjacent third movable pistons 32 will not be discharged. At this time, all the third movable pistons When the air is exhausted, the two third movable pistons 32 are close to each other, and the third movable piston 32 closest to the intercepting block 80 can be pushed continuously until the air between all the adjacent third movable pistons 32 is exhausted and all the third movable pistons 32 are moved to the other side of the ventilation port 31, and the pushing is stopped. One end of the intercepting block 80 on the sample retaining tube 29 is moved to the top of the movable platform 75 through the two connecting holes 28, and the limiting plate 30 is close to the exhaust pipe 27. At this time, the two sealing pads 85 are respectively located at the two connecting holes 28, and the ventilation port 31 is in the exhaust pipe 27.

[0044] The staff controls the drone body 1 to move in the direction where sampling is required, and uses the air detector 87 to roughly detect the air quality. If there is no problem with the air quality, no sampling is performed. If there is a certain problem with the air quality, sampling is performed. When the drone body 1 is lifted off, under the action of gravity, the lifting platform 67 moves downward, and pulls the guide column 69, the lifting plate 72, and the intercepting rod 73 downward. The lower end of the intercepting rod 73 is inserted into the intercepting hole 74, which can limit the limit plate 30 and prevent the sample from being retained. When the cylinder 29 moves and the lifting platform 67 moves downward, the moving platform 75 can be pulled downward to move the moving block 78 below the L-shaped push rod 82. When the second rack 43 drives the L-shaped push rod 82 to move, the moving block 78 will not be driven to move. Before sampling, the electric telescopic rod 19 is shortened to the shortest, so that the first moving piston 6 moves to the inlet end of the sampling cylinder 3, the second moving piston 10 moves to the outside of the sampling cylinder 3, and the annular baffle 63 enters the annular groove 64, so that the spring ejector 61 can be stretched.

[0045] When sampling is required, the drone body 1 is hovered at the sampling position, and the two electric telescopic rods 19 are started to extend. The telescopic ends of the electric telescopic rods 19 are connected to the moving rod 17 through the connecting platform 18, and the moving rod 17, the square stretching rod 11, the telescopic rotating shaft 7, the first moving piston 6, and the second moving piston 10 can be pulled in the direction of the guide shaft 12. One end of the square stretching rod 11 can pass through the square through hole 15 in the guide shaft 12. When the first moving piston 6 and the second moving piston 10 move into the sampling cylinder 3, the air can be sampled. When the second moving piston 10 moves to the inlet end of the sampling cylinder 3, the friction between the second moving piston 10 and the inner wall of the sampling cylinder 3 can move the first rotating column 45 and the second rotating column 4 7 is separated, at this time, air can enter the sampling cylinder 3 through the exhaust pipe 27, when the distance between the first rotating column 45 and the second rotating column 47 is the largest, the square connecting rod 48 moves to the end of the square groove 46, and the intercepting plate 52 is connected to the first rotating column 45 through the L-shaped limiting rod 49 and moves to the side of the circular baffle 50, the limiting hole 51 on the circular baffle 50 allows the L-shaped limiting rod 49 to pass through, but does not allow the intercepting plate 52 to pass through, the circular baffle 50 can be pulled toward the direction of the first rotating column 45 through the intercepting plate 52, so that the second rotating column 47 is pulled toward the direction of the first rotating column 45, and the second movable piston 10 is pulled into the sampling cylinder 3, at this time, the spring ejector pin 61 returns to its original position, and the movable plate 62 moves to the inlet end of the sampling cylinder 3,

[0046] When the first movable piston 6 moves, the first rack 21 can be driven to move. One end of the first guide wheel 56 is located in the first guide groove 53, which can ensure the moving direction of the first rack 21. When the first rack 21 moves, the first gear 24 can be driven to rotate through the meshing of the gears. The first gear 24 and the first bevel gear 25 are installed on the rotating rod 23. One end of the rotating rod 23 is inserted into the fifth rolling bearing 22. When the first rack 21 moves, the first gear 24, the rotating rod 23, and the first bevel gear 25 can be driven to rotate. Through the meshing of the first bevel gear 25 and the second bevel gear 26, the guide shaft 12 can be driven to rotate in the third rolling bearing 13. A square through hole 15 is opened on the guide shaft 12. The square stretching rod 11 passes through the square through hole 15, which can drive The square stretching rod 11 rotates, and one end of the square stretching rod 11 is connected to the telescopic rotating shaft 7, which can drive the telescopic rotating shaft 7 to rotate between the first rolling bearing 5 and the second rolling bearing 9. The first rotating column 45 and the second rotating column 47 in the telescopic rotating shaft 7 are connected through the square connecting rod 48 and the square groove 46. One end of the L-shaped limiting rod 49 passes through the limiting hole 51 on the circular baffle 50, so that the first rotating column 45 and the second rotating column 47 can rotate synchronously and drive the L-shaped stirring shaft 8 to rotate, so that the air in the sampling tube 3 can be stirred and mixed evenly during sampling. When the electric telescopic rod 19 is extended to the longest, the second movable piston 10 moves from one side of the exhaust pipe 27 to the other side, thereby completing the sampling. At this time, the electric telescopic rod 19 is closed.

[0047] After the sampling is completed, the electric telescopic rod 19 is started to shorten, and the mobile rod 17, the square stretching rod 11, the telescopic rotating shaft 7, the first mobile piston 6, and the second mobile piston 10 are pushed toward the direction of the mobile plate 62 through the connecting platform 18. There is a good sealing between the first mobile piston 6 and the second mobile piston 10 and the sampling tube 3 to prevent air leakage. At this time, the first mobile piston 6 and the second mobile piston 10 move synchronously, and when the first mobile piston 6 moves, the first gear 24 can be driven to rotate through the first rack 21, and the telescopic rotating shaft 7 can be rotated through the transmission between the gears. When the second mobile piston 1 0 moves from the other end of the exhaust pipe 27 to the original end of the exhaust pipe 27, at this time, the air is discharged from the exhaust pipe 27, and there is friction between the second movable piston 10 and the sampling cylinder 3, and the second movable piston 10 will not move. The first rotating column 45 and the second rotating column 47 will approach each other. When the first rotating column 45 and the second rotating column 47 are close to each other, they will continue to push the second movable piston 10 outward. When the second movable piston 10 moves to the outside of the sampling cylinder 3, the annular baffle 63 enters the annular groove 64, and can push the spring ejector 61 away with the movement of the second movable piston 10, so as to ensure the moving direction of the second movable piston 10.

[0048] Before sampling, the third movable piston 32 in the sample retaining cylinder 29, which is farthest from the interception block 80, is located at the ventilation port 31. At this time, no matter how the air in the exhaust pipe 27 flows, the air will not enter the sample retaining cylinder 29. When the first movable piston 6 moves in the direction of the guide shaft 12, the second rack 43 can be driven to move in the direction close to the guide shaft 12 through the L-shaped connecting shaft 44. When the second rack 43 moves, the second guide wheel 60 is located in the second guide groove 57, which can ensure the moving direction of the second rack 43. The second rack 43 is meshed with the second gear 41, which can drive the second gear 41 to rotate on the sixth rolling bearing 40. When the second gear 41 rotates, the ratchet 42 can be driven to rotate. The pawl 42 is connected to the ratchet wheel 39 at one end. When the pawl 42 rotates in this direction, the ratchet wheel 39 can be prevented from rotating through the one-way bearing 36. The pawl 42 will deviate to one side and will not drive the ratchet wheel 39 to rotate, thereby not driving the third movable piston 32 to move. When the sampling is completed, the first movable piston 6 moves toward the outside of the sampling tube 3, which can drive the second rack 43 to move in the opposite direction, and make the second gear 41 and the pawl 42 rotate in the opposite direction. At this time, the pawl 42 can drive the ratchet wheel 39 to rotate, and drive the take-up wheel 37 to rotate, thereby retracting the connecting rope 38. One end of the connecting rope 38 is connected to the third movable piston 32 through the connecting ring 33, and the third movable piston 32 can be moved toward the take-up wheel 37. When the third movable piston 32 moves in the direction of the take-up wheel 37, due to the good sealing between the third movable piston 32 and the sample retaining cylinder 29, all the third movable pistons 32 can be moved in the direction of the take-up wheel 37 by the effect of atmospheric pressure. When the outermost third movable piston 32 passes through the air exchange port 31, the sealing between the third movable pistons 32 adjacent to it is destroyed, and air can enter between the two third movable pistons 32 from the air exchange port 31. At this time, the outermost third movable piston 32 continues to move, and the remaining third movable pistons 32 do not move. When the third movable piston 32 moves, the first movable piston 6 and the second movable piston 10 The third movable piston 32 moves to the outside of the sampling tube 3 and discharges the air from the exhaust pipe 27. The discharged air is mixed evenly. At this time, the third movable piston 32 moves to open the ventilation port 31, so that the air is retained in the sample retaining tube 29. When the connecting line 34 between the outermost third movable piston 32 and the adjacent third movable piston 32 is tightened, the remaining third movable pistons 32 will continue to be pulled. When the second third movable piston 32 moves to the ventilation port 31 and blocks the ventilation port 31, the electric telescopic rod 19 is shortened to the shortest position, completing a sampling. Then the staff moves the drone body 1 to the next position and repeats the above process for sampling.

[0049] After the sampling is completed, the drone body 1 is moved to the ground, so that the lifting platform 67, the guide column 69, and the lifting plate 72 are moved upward. At this time, the intercepting rod 73 is taken out from the intercepting hole 74, the moving platform 75 is raised, and the moving block 78 is moved to the side of the L-shaped pushing rod 82, and the electric telescopic rod 19 is started to extend, and the first moving piston 6, the L-shaped connecting shaft 44, the second rack 43, and the L-shaped pushing rod 82 are driven to move, and the moving block 78 can be moved in the direction of the intercepting block 80. The intercepting block 80 can prevent the pushing column 81 on the moving block 78 from entering the sample retention tube 29, and the air vent 86 on the intercepting block 80 can ensure the flow of air. The slide groove 83 and the pulley 84 can ensure the moving direction of the moving block 78, so that the sample cylinder 29 can be pushed to one side of the exhaust pipe 27, and the pushing column 81 can pass through the connecting hole 28 and enter the exhaust pipe 27, so that the sample cylinder 29 can be completely pushed out of the exhaust pipe 27. The staff will disconnect the connection between the connecting rope 38 and the connecting ring 33, take the sample cylinder 29 to the laboratory, install the corresponding sampling equipment at the ventilation port 31, and push all the third movable pistons 32 toward the ventilation port 31. The samples between the multiple third movable pistons 32 can be placed separately for testing to obtain more accurate test results.

[0050] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. An air detection device based on a drone, comprising a drone body (1), wherein a guide mechanism is provided below the drone body (1), a reset mechanism is provided on one side of the guide mechanism, a limit mechanism is provided below the reset mechanism, and a push mechanism is provided on one side of the limit mechanism, wherein: The lower end of the drone body (1) is provided with a stirring sampling mechanism, and one side of the stirring sampling mechanism is provided with an exhaust sampling mechanism. The stirring sampling mechanism comprises a holding platform (2) fixedly mounted on one side of the lower surface of the drone body (1); a sampling tube (3) is provided on one side of the holding platform (2); a plurality of connecting columns (4) are installed on one side of the sampling tube (3); one end of the connecting column (4) is fixedly connected to the holding platform (2); a first rolling bearing (5) is provided in the sampling tube (3); a first movable piston (6) is installed outside the first rolling bearing (5); a telescopic rotating shaft (7) is provided in the sampling tube (3); a plurality of L-shaped stirring shafts (8) are installed on the telescopic rotating shaft (7); one end of the telescopic rotating shaft (7) is inserted into the first rolling bearing (5); and a second rolling bearing (9) is installed at the other end of the telescopic rotating shaft (7). A second movable piston (10) is installed outside the second rolling bearing (9), one end of the telescopic rotating shaft (7) is connected to a square stretching rod (11), the square stretching rod (11) is located on one side of the first movable piston (6), a guide shaft (12) is provided on one side of the square stretching rod (11), the guide shaft (12) is located on one side of the sampling tube (3), a third rolling bearing (13) is installed outside the guide shaft (12), a fixed rod (14) is installed on one side of the third rolling bearing (13), one end of the fixed rod (14) is fixedly connected to the holding platform (2), a square through hole (15) is opened on the guide shaft (12), one end of the square stretching rod (11) extends into the square through hole (15), and the square stretching rod (11) is provided on one side of the square stretching rod (11). A fourth rolling bearing (16) is installed on a surface of one side of the stretch rod (11) located in the square through hole (15); a moving rod (17) is provided on one side of the square stretch rod (11); one end of the moving rod (17) is inserted into the fourth rolling bearing (16); the other end of the moving rod (17) extends to the outside of the square through hole (15); a connecting platform (18) is installed on one end of the moving rod (17) located outside the square through hole (15); two electric telescopic rods (19) are provided on one side of the connecting platform (18); the electric telescopic rods (19) are located above and below the sampling tube (3); the telescopic end of the electric telescopic rod (19) is fixedly connected to the connecting platform (18); and the fixed end of the electric telescopic rod (19) is installed with a fixed platform (20), one end of the fixed platform (20) is fixedly connected to the containing platform (2), a first rack (21) is installed on one side surface of the first movable piston (6), a fifth rolling bearing (22) is installed on one side of the containing platform (2), a rotating rod (23) is provided on one side of the fifth rolling bearing (22), one end of the rotating rod (23) is inserted into the fifth rolling bearing (22), a first gear (24) is installed on the rotating rod (23), the first gear (24) and the first rack (21) are meshed, a first bevel gear (25) is installed on one side of the first gear (24), a second bevel gear (26) is installed on the guide shaft (12), the second bevel gear (26) and the first bevel gear (25) are meshed, The exhaust sample retention mechanism comprises an exhaust pipe (27) fixedly mounted on one side of the sampling tube (3), the exhaust pipe (27) having two connecting holes (28), a sample retention tube (29) being disposed on one side of the exhaust pipe (27), one end of the sample retention tube (29) passing through the two connecting holes (28), limit plates (30) being disposed on both sides of the sample retention tube (29), two ventilation ports (31) being disposed on the sample retention tube (29), ten third movable pistons (32) being disposed in the sample retention tube (29), a connecting ring (33) being disposed on the outermost movable piston, nine connecting lines (34) being disposed in the sample retention tube (29), each connecting line (34) connecting two adjacent third movable pistons (32), a fixing column (35) being disposed at one end of the sampling tube (3), the fixing column (35) ) is mounted on a one-way bearing (36), a take-up wheel (37) is mounted on the one-way bearing (36), a connecting rope (38) is wound around the take-up wheel (37), the connecting rope (38) is tied and connected to the connecting ring (33), a ratchet (39) is mounted on one side of the take-up wheel (37), a sixth rolling bearing (40) is mounted on one side of the one-way bearing (36), a second gear (41) is mounted on the sixth rolling bearing (40), a ratchet (42) is mounted on one side of the second gear (41), a second rack (43) is provided on one side of the second gear (41), the second rack (43) is meshed with the second gear (41), an L-shaped connecting shaft (44) is mounted on one end of the second rack (43), and one end of the L-shaped connecting shaft (44) is fixedly connected to the first movable piston (6); The guide mechanism comprises first guide grooves (53) located on both sides of the first rack (21); a plurality of first guide rods (54) are provided on one side of the first rack (21); one end of the first guide rod (54) is fixedly mounted on the placing table (2); two first guide blocks (55) are mounted on the other end of the first guide rod (54); a first guide wheel (56) is mounted on the inner surface of the first guide block (55); the first guide wheel (56) is located in the first guide groove (53); second guide grooves (57) are formed on both sides of the second rack (43); a second guide rod (58) is provided on one side of the second rack (43); one end of the second guide rod (58) is fixedly mounted on the sampling tube (3); two second guide blocks (59) are mounted on the other end of the second guide rod (58); a second guide wheel (60) is mounted on the inner surface of the second guide block (59); the second guide wheel (60) is located in the second guide groove (57); The reset mechanism comprises a spring ejector pin (61) fixedly mounted on the upper and lower ends of the sampling cylinder (3); a movable plate (62) is provided on one side of the sampling cylinder (3); the movable plate (62) is fixedly connected to the movable ends of the two spring ejector pins (61); a circular baffle plate (63) is mounted on the movable plate (62); a circular groove (64) is provided on one side of the second movable piston (10); one end of the circular baffle plate (63) is located in the circular groove (64); The limiting mechanism comprises a support platform (65) fixedly mounted at the lower end of the placing platform (2), a connecting block (66) being mounted on the upper surface of the support platform (65), the upper end of the connecting block (66) being fixedly connected to the lower end of the drone body (1), a lifting platform (67) being arranged below the support platform (65), universal wheels (68) being mounted at four corners of the lower surface of the lifting platform (67), guide columns (69) being mounted at four corners of the upper surface of the lifting platform (67), four guide holes (70) being opened on the support platform (65), the guide holes (70) being in one-to-one correspondence with the guide columns (69), and the guide columns (69) being arranged on the upper surface of the lifting platform (67). The end of the guide column (69) extends through the guide hole (70) to the top of the support platform (65), an interception platform (71) is installed on the guide column (69), and the interception platform (71) is located above the guide hole (70). A lifting plate (72) is provided above the lifting platform (67), and the lifting plate (72) is located above the exhaust pipe (27). Both sides of the lower surface of the lifting platform (67) are fixedly connected to the upper ends of the two guide columns (69) on the front side, and two interception rods (73) are installed on the lower surface of the lifting plate (72). An interception hole (74) is opened on the limit plate (30), and the lower end of the interception rod (73) is inserted into the interception hole (74); The pushing mechanism comprises a moving platform (75) fixedly mounted on the upper surface of the lifting platform (67), a square opening (76) is opened on the support platform (65), the upper end of the moving platform (75) passes through the square opening (76) and extends to the lower side of the exhaust pipe (27), a reset platform (77) is installed on one side of the upper surface of the moving platform (75), a moving block (78) is provided on one side of the reset platform (77), the reset platform (77) and the moving platform (75) are connected by a reset spring (79), and an intercepting spring (78) is installed at the end of the sample retaining tube (29) Block (80), two push columns (81) are installed on the surface of one side of the moving block (78) close to the intercepting block (80), an L-shaped push rod (82) is installed at one end of the second rack (43), and the L-shaped push rod (82) is located above the return spring (79), and two slide grooves (83) are opened on the upper surface of the moving platform (75), and the slide grooves (83) are located below the moving block (78), and pulleys (84) are installed on both sides of the lower surface of the moving block (78), and the lower ends of the pulleys (84) are located in the slide grooves (83).

2. The air detection device based on a drone according to claim 1, characterized in that: The telescopic rotating shaft (7) comprises a first rotating column (45) having one end inserted into the first rolling bearing (5), a square groove (46) being formed on the side of the first rotating column (45) away from the first rolling bearing (5), a second rotating column (47) being provided on one side of the first rotating column (45), one end of the second rotating column (47) being inserted into the second rolling bearing (9), a square connecting rod (48) being installed on the other end of the second rotating column (47), one end of the square connecting rod (48) being inserted into the square groove (46), a plurality of L-shaped limiting rods (49) being installed on one end of the first rotating column (45) close to the square groove (46), a circular baffle (50) being installed on one end of the second rotating column (47) close to the square connecting rod (48), a plurality of limiting holes (51) being formed on the circular baffle (50), the limiting holes (51) corresponding to the L-shaped limiting rods (49) one by one, and an intercepting plate (52) being installed on the end of the L-shaped limiting rod (49).

3. The air detection device based on a drone according to claim 1, characterized in that: Two sealing pads (85) are installed on the sample retaining cylinder (29); when one end of the limiting plate (30) contacts the exhaust pipe (27), the two sealing pads (85) are located at the intersection of the sample retaining cylinder (29) and the connecting hole (28); and the ventilation port (31) is located between the two sealing pads (85).

4. The air detection device based on a drone according to claim 1, characterized in that: The intercepting block (80) is provided with a vent hole (86).

5. The air detection device based on a drone according to claim 1, characterized in that: An air detector (87) is installed on one side of the lower end of the drone body (1).

Images