A harmful gas sampling device based on drone

Abstract

The present invention discloses a harmful gas sampling device based on a drone in the field of air sampling technology, comprising a drone body, a fixed box is arranged at the bottom side of the drone body, a lifting mechanism is arranged at the upper side of the inner cavity of the fixed box, the lifting mechanism comprises an electric telescopic rod and two sets of telescopic cylinders, the electric telescopic rod and the two sets of telescopic cylinders are arranged at the upper side of the inner cavity of the fixed box, and the two sets of telescopic cylinders are symmetrically arranged on both sides of the electric telescopic rod, two sets of fixed seats are arranged at the bottom end of the fixed box, a sampling mechanism is arranged between the two sets of fixed seats, a first extrusion mechanism and a second extrusion mechanism are symmetrically arranged at the upper and lower ends of the two sets of fixed seats, and a traction mechanism is arranged between the first extrusion mechanism and the second extrusion mechanism. The present invention can use a drone to sample harmful gases, and at the same time, the sampling device is immediately sealed after the sampling is completed, so as to prevent the air circulation between the sampling device and the outside world, and ensure the strictness of air sampling and the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of air sampling, and in particular to a harmful gas sampling device based on an unmanned aerial vehicle. Background Art

[0002] Gas sampling is becoming more and more common in our daily life. When sampling gas, gas sampling bags or other gas sampling containers are usually used to collect gas. However, in areas with harmful gases, it is often impossible or inconvenient to approach the sampling area. Therefore, there is currently a method of using drones to replace human sampling so that humans do not inhale harmful gases during sampling and thus protect their health.

[0003] However, when using drones for sampling, the air collection effect is often not good, and the sampling device cannot be sealed immediately after the sampling is completed, making the device not tight enough, which may cause the leakage of harmful gases in the sampling device and the entry of a small amount of other gases, thereby causing the harmful gases to be mixed with other gases and a reduction in the amount of gas in the collection device, affecting the sampling effect.

[0004] Based on this, the present invention designs a harmful gas sampling device based on a drone to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a harmful gas sampling device based on a drone to solve the above-mentioned problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a harmful gas sampling device based on a drone, comprising a drone body, a fixed box is arranged on the bottom side of the drone body, a lifting mechanism is arranged on the upper side of the inner cavity of the fixed box, two groups of fixed seats are arranged at the bottom end of the fixed box, a sampling mechanism is arranged between the two groups of fixed seats, a first extrusion mechanism and a second extrusion mechanism are symmetrically arranged at the upper and lower ends of the two groups of fixed seats, and a traction mechanism is arranged between the first extrusion mechanism and the second extrusion mechanism.

[0007] Preferably, in the above-mentioned harmful gas sampling device based on a drone, the lifting mechanism includes an electric telescopic rod and two groups of telescopic cylinders, the electric telescopic rod and the two groups of telescopic cylinders are arranged on the upper side of the inner cavity of the fixed box, and the two groups of telescopic cylinders are symmetrically arranged on both sides of the electric telescopic rod, a lifting plate is arranged between the lower ends of the electric telescopic rod and the two groups of telescopic cylinders, and fixed rods are symmetrically arranged at both ends of the lower side of the lifting plate.

[0008] Based on the above technical features, the lifting and lowering of the electric telescopic rod can drive the lifting and lowering of the two sets of fixed rods.

[0009] Preferably, in the above-mentioned harmful gas sampling device based on a drone, a support plate is provided on the side where the two groups of fixing seats are close to each other.

[0010] Based on the above technical features, the support plates are arranged at the side ends of the fixing base, and a distance is left between the two groups of support plates.

[0011] Preferably, in the above-mentioned harmful gas sampling device based on a drone, the sampling mechanism includes an airbag, an air intake pipe and an air intake hose, the airbag is arranged on the upper side between the two groups of support plates, the air intake pipe is arranged on the lower side of the fixed box, and the air intake pipe and the inner cavity of the fixed box are connected, and the air intake hose is connected between the upper end of the air intake pipe and the inner cavity of the airbag.

[0012] Based on the above technical features, by pressing the airbag and then releasing it, air can enter the airbag through the intake pipe and the intake hose, thereby completing the collection of air.

[0013] Preferably, in the above-mentioned harmful gas sampling device based on a drone, the first extrusion mechanism includes a first sliding rod, the first sliding rod passes through the side end of the fixed seat, and the ends of the two groups of the first sliding rods that are away from each other are both provided with wedge blocks.

[0014] Based on the above technical features, by pressing the wedge block downward, the two groups of first sliding rods can slide close to each other in the fixing seat, thereby squeezing the airbag.

[0015] Preferably, in the above-mentioned drone-based harmful gas sampling device, the second extrusion mechanism includes a second slide rod and a fixed plate, the fixed plate is arranged on the bottom side of the inner cavity of the fixed box, the second slide rod passes through the fixed plate and the side end of the fixed seat, and a spring is arranged between the outer peripheral side of the second slide rod and the fixed plate.

[0016] Based on the above technical features, the spring can make the two groups of second sliding bars approach each other, so as to squeeze the air intake hose between the two groups of second sliding bars, so that the air intake hose is sealed.

[0017] Preferably, in the above-mentioned harmful gas sampling device based on a drone, the traction mechanism includes a bearing seat, the bearing seat is arranged on the bottom side of the inner cavity of the fixed box, and the bearing seat is away from the second extrusion mechanism, a pulley is rotatably arranged on the upper end of the bearing seat, and a pull rope is slidably arranged on the outer periphery of the pulley, one end of the pull rope is connected to the bottom side of the wedge block, and the other end of the pull rope is connected to the side end of the second slide rod.

[0018] Based on the above technical features, when the lifting mechanism rises, the second extrusion mechanism can pull the first extrusion mechanism through the traction mechanism, so that the first extrusion mechanism releases the pressure on the sampling mechanism.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting a lifting mechanism, a sampling mechanism and two symmetrically arranged first extrusion mechanisms, when the lifting mechanism descends, the airbags in the two first extrusion mechanisms will be squeezed by the first extrusion mechanisms, and when the lifting mechanism rises, the two first extrusion mechanisms will release the squeezing of the airbags through the action of the second extrusion mechanism and the traction mechanism, so that the airbags automatically return to their original state, and during the recovery process, the airbags can suck the air below into the airbags through the air intake pipe and the air intake hose, thereby completing the collection of air.

[0021] 2. By setting up the second squeezing mechanism and the traction mechanism, when the first squeezing mechanism releases the squeezing of the airbag, the two groups of second squeezing mechanisms will gradually move and approach each other. When the airbag returns to its original state, the two groups of second squeezing mechanisms stop moving. At this time, the two groups of second squeezing mechanisms will clamp the air intake hose, thereby sealing the air intake hose to prevent gas circulation between the airbag and the outside world, thereby ensuring the tightness of gas sampling.

[0022] The present invention can use a drone to sample harmful gases, and at the same time, the sampling device is immediately sealed after the sampling is completed, thereby preventing air circulation between the sampling device and the outside world, and ensuring the rigor of air sampling and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is an enlarged schematic diagram of the structure of part A of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. UAV body; 2. Fixed box; 3. Lifting mechanism; 31. Electric telescopic rod; 32. Telescopic cylinder; 33. Lifting plate; 34. Fixed rod; 4. Fixed seat; 41. Support plate; 5. Sampling mechanism; 51. Airbag; 52. Intake pipe; 53. Intake hose; 6. First squeezing mechanism; 61. First slide bar; 62. Wedge block; 7. Second squeezing mechanism; 71. Second slide bar; 72. Fixed plate; 73. Spring; 8. Traction mechanism; 81. Bearing seat; 82. Pulley; 83. Pull rope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 and Figure 2 The present invention provides an embodiment of a harmful gas sampling device based on a drone: it includes a drone body 1, a fixing box 2 is arranged on the bottom side of the drone body 1, and a lifting mechanism 3 is arranged on the upper side of the inner cavity of the fixing box 2.

[0030] The lifting mechanism 3 includes an electric telescopic rod 31 and two sets of telescopic cylinders 32. The electric telescopic rod 31 and the two sets of telescopic cylinders 32 are both arranged on the upper side of the inner cavity of the fixed box 1, and the two sets of telescopic cylinders 32 are symmetrically arranged on both sides of the electric telescopic rod 31. A lifting plate 33 is arranged between the lower ends of the electric telescopic rod 31 and the two sets of telescopic cylinders 32. The electric telescopic rod 31 can adjust the height of the lifting plate 23 in the fixed box 2 by lifting, and the two sets of telescopic cylinders 32 can make the lifting plate 33 more stable during the lifting process.

[0031] Fixing rods 34 are symmetrically arranged at both ends of the lower side of the lifting plate 33 .

[0032] Two groups of fixing seats 4 are arranged at the bottom of the fixing box 2 , and a supporting plate 41 is arranged on one side of the two groups of fixing seats 4 close to each other.

[0033] A sampling mechanism 5 is arranged between the two sets of fixing seats 4. The sampling mechanism 5 includes an air bag 51, an air intake pipe 52 and an air intake hose 53. The air bag 51 is spherical and hollow inside, and can automatically return to its original shape after being squeezed.

[0034] The airbag 51 is disposed on the upper side between the two groups of support plates 41 , and the two groups of support plates 41 support the airbag 51 .

[0035] The air intake pipe 52 is arranged on the lower side of the fixed box 2, and the air intake pipe 52 and the inner cavity of the fixed box 2 are connected. The air intake hose 53 is connected between the upper end of the air intake pipe 52 and the inner cavity of the airbag 51. When the airbag 51 returns to a spherical shape after being squeezed, the gas below the fixed box 2 can be sucked into the airbag 51 through the air intake pipe 52 and the air intake hose 53.

[0036] The first extrusion mechanism 6 and the second extrusion mechanism 7 are symmetrically arranged at the upper and lower ends of the two sets of fixing seats 4 .

[0037] The first extrusion mechanism 6 includes a first sliding rod 61 . The first sliding rod 61 penetrates the side end of the fixing seat 4 . The first sliding rod 61 can slide left and right through the fixing seat 4 .

[0038] A wedge block 62 is disposed at one end of the two groups of first sliding rods 61 that is away from each other. The wedge block 62 can be moved by pressing down the slope of the wedge block 62 .

[0039] The second extrusion mechanism 7 includes a second sliding rod 71 and a fixing plate 72 . The fixing plate 72 is arranged at the bottom side of the inner cavity of the fixing box 2 , and the fixing plate 72 is located at a side where the two groups of fixing seats 2 are away from each other.

[0040] The second slide bar 71 passes through the side ends of the fixing plate 72 and the fixing seat 4 , and a spring 73 is provided between the outer peripheral side of the second slide bar 71 and the fixing plate 72 , and the spring 73 can drive the two groups of second slide bars 71 to slide close to each other between the fixing plate 72 and the fixing seat 4 .

[0041] A traction mechanism 8 is provided between the first extrusion mechanism 6 and the second extrusion mechanism 7 .

[0042] The traction mechanism 8 includes a bearing seat 81, which is arranged on the bottom side of the inner cavity of the fixed box 2 and is far away from the second extrusion mechanism 7, so that the second extrusion mechanism 7 can pull the first extrusion mechanism 6 to slide left and right.

[0043] A pulley 82 is rotatably provided at the upper end of the supporting seat 81, and a pull rope 83 is slidably provided on the outer periphery of the pulley 82. One end of the pull rope 83 is connected to the bottom side of the wedge block 62, and the other end of the pull rope 83 is connected to the side end of the second slide rod 71. When the wedge block 62 is pressed down and moved by the lifting mechanism 3, the wedge block 62 can pull the second squeezing mechanism 7 through the pull rope 83, so that the second squeezing mechanism 7 releases the clamping of the air intake hose 53. Conversely, when the lifting mechanism 3 rises, the two groups of second squeezing mechanisms 7 will slide close to each other, thereby pulling the first squeezing mechanism 6 through the pull rope 83, so that the first squeezing mechanism 6 releases the squeezing of the sampling mechanism 5.

[0044] The specific working principle is as follows: when it is necessary to sample harmful gases, first control the lifting mechanism 3 to descend, so that the two groups of first squeezing mechanisms 6 squeeze the sampling mechanism 5, and keep the sampling mechanism 5 in a squeezed state. Then, the controller controls the drone body 1 to fly to the area where sampling is required. When the drone body 1 reaches the area, the lifting mechanism 3 is controlled to rise. When the lifting mechanism 3 rises, the downward pressure on the first squeezing mechanism 6 will gradually decrease, and the sampling mechanism 5 will gradually collect and sample the air. At the same time, the two groups of second squeezing mechanisms 7 will gradually approach each other. When the two groups of second squeezing mechanisms 7 approach each other, the traction mechanism 8 can respectively drive the two groups of first squeezing mechanisms 6 away from each other, so that the first squeezing mechanism 6 gradually releases the squeezing of the sampling mechanism 5.

[0045] When the lifting mechanism 3 and the first squeezing mechanism 6 are completely separated, the sampling mechanism 5 has completed sampling, and the second squeezing mechanism 7 will squeeze the sampling mechanism 5 to make the sampling mechanism 5 sealed. The present invention can use a drone to sample harmful gases, and at the same time, the sampling device is immediately sealed after the sampling is completed, preventing the sampling device from circulating air with the outside world, thereby ensuring the rigor of air sampling and the accuracy of detection.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A harmful gas sampling device based on a drone, comprising a drone body (1), characterized in that: A fixing box (2) is arranged at the bottom side of the drone body (1), a lifting mechanism (3) is arranged at the upper side of the inner cavity of the fixing box (2), two groups of fixing seats (4) are arranged at the bottom end of the fixing box (2), a sampling mechanism (5) is arranged between the two groups of fixing seats (4), a first extrusion mechanism (6) and a second extrusion mechanism (7) are symmetrically arranged at the upper and lower ends of the two groups of fixing seats (4), and a traction mechanism (8) is arranged between the first extrusion mechanism (6) and the second extrusion mechanism (7); A support plate (41) is provided on one side of the two sets of fixing seats (4) close to each other. The sampling mechanism (5) comprises an air bag (51), an air intake pipe (52) and an air intake hose (53), wherein the air bag (51) is arranged on the upper side between the two groups of support plates (41), the air intake pipe (52) is arranged on the lower side of the fixed box (2), and the inner cavities of the air intake pipe (52) and the fixed box (2) are in communication, and the air intake hose (53) is in communication between the upper end of the air intake pipe (52) and the inner cavity of the air bag (51); the first squeezing mechanism (6) comprises a first sliding rod (61), the first sliding rod (61) passes through the side end of the fixed seat (4), and the ends of the two groups of the first sliding rods (61) away from each other are both provided with a wedge block (62); The second extrusion mechanism (7) comprises a second slide bar (71) and a fixed plate (72), wherein the fixed plate (72) is arranged at the bottom side of the inner cavity of the fixed box (2), the second slide bar (71) penetrates the fixed plate (72) and the side end of the fixed seat (4), and a spring (73) is arranged between the outer peripheral side of the second slide bar (71) and the fixed plate (72); The traction mechanism (8) comprises a bearing seat (81), the bearing seat (81) is arranged at the bottom side of the inner cavity of the fixed box (2), and the bearing seat (81) is far away from the second extrusion mechanism (7), a pulley (82) is rotatably arranged on the upper end of the bearing seat (81), a pull rope (83) is slidably arranged on the outer periphery of the pulley (82), one end of the pull rope (83) is connected to the bottom side of the wedge block (62), and the other end of the pull rope (83) is connected to the side end of the second slide rod (71); By pressing the wedge block downward, the two sets of first slide bars can slide closer to each other in the fixed seat, thereby squeezing the airbag. When the wedge block is pressed down and moved by the lifting mechanism, the wedge block can pull the second squeezing mechanism through the pull rope, so that the second squeezing mechanism releases the clamping of the air intake hose. Conversely, when the lifting mechanism rises, the two groups of second squeezing mechanisms will slide close to each other, thereby pulling the first squeezing mechanism through the pull rope, so that the first squeezing mechanism releases the squeezing of the sampling mechanism.

2. A harmful gas sampling device based on a drone according to claim 1, characterized in that: The lifting mechanism (3) comprises an electric telescopic rod (31) and two groups of telescopic cylinders (32); the electric telescopic rod (31) and the two groups of telescopic cylinders (32) are both arranged on the upper side of the inner cavity of the fixed box (2), and the two groups of telescopic cylinders (32) are symmetrically arranged on both sides of the electric telescopic rod (31); a lifting plate (33) is arranged between the lower ends of the electric telescopic rod (31) and the two groups of telescopic cylinders (32); and fixed rods (34) are symmetrically arranged at both ends of the lower side of the lifting plate (33).

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