CN115266251A - A UAV-based Harmful Gas Sampling Device - Google Patents

Abstract

The invention discloses a harmful gas sampling device based on an unmanned aerial vehicle, which belongs to the technical field of air sampling and comprises an unmanned aerial vehicle body, wherein a fixed box is arranged at the bottom side of the unmanned aerial vehicle body, a lifting mechanism is arranged on the upper side of an inner cavity of the fixed box, the lifting mechanism comprises 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, the two groups of telescopic cylinders are symmetrically arranged on two sides of the electric telescopic rod, 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 respectively and symmetrically arranged at the upper end and the lower end of each group of fixed seats, and a traction mechanism is arranged between the first extrusion mechanism and the second extrusion mechanism. According to the invention, the unmanned aerial vehicle can be used for sampling harmful gas, and the sampling device is sealed immediately after sampling is finished, so that the sampling device is prevented from being communicated with the outside air, and the tightness and detection accuracy of air sampling are ensured.

Description

A Harmful Gas Sampling Device Based on UAV

technical field

The invention relates to the technical field of air sampling, in particular to an unmanned aerial vehicle-based harmful gas sampling device.

Background technique

Gas sampling is becoming more and more common in daily life. During gas sampling, gas sampling bags or other gas sampling containers are usually used to collect gas, but in areas with harmful gases, it is often impossible or not suitable to approach the sampling area, so there are currently drones To replace the method of human sampling so that human beings do not inhale harmful gases during sampling so as to protect their health.

When using drones to sample, the air collection effect is often not good, and the sampling device cannot be sealed immediately after the sampling, making the device not tight enough, which may cause the leakage of harmful gases and a small amount of other gases in the sampling device As a result, the harmful gas is doped with other gases and the amount of gas in the collection device is reduced, which affects the sampling effect.

Based on this, the present invention designs an unmanned aerial vehicle-based harmful gas sampling device to solve the above-mentioned problems.

Contents of the invention

The object of the present invention is to provide an unmanned aerial vehicle-based harmful gas sampling device to solve the above-mentioned problems.

In order to achieve the above object, the present invention provides the following technical solution: a harmful gas sampling device based on a drone, including a drone body, a fixed box is arranged on the bottom side of the drone body, and a fixed box is placed on the inner cavity of the fixed box The side is provided with a lifting mechanism, the bottom of the fixed box is provided with two groups of fixed seats, a sampling mechanism is arranged between the two groups of fixed seats, and the upper and lower ends of the two groups of fixed seats are respectively symmetrically provided with a first extrusion mechanism and a second Two extruding mechanisms, a traction mechanism is arranged between the first extruding mechanism and the second extruding mechanism.

Preferably, in the above-mentioned harmful gas sampling device based on unmanned aerial vehicles, the lifting mechanism includes an electric telescopic rod and two sets of telescopic tubes, and the electric telescopic rod and two sets of telescopic tubes are all arranged on the upper side of the inner cavity of the fixed box , and two sets of telescopic tubes 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 tubes, and fixed rods are symmetrically arranged at both ends of the lower side of the lifting plate.

Based on the above technical features, the two groups of fixed rods can be driven up and down through the lifting of the electric telescopic rod.

Preferably, in the above-mentioned harmful gas sampling device based on a drone, a support plate is provided on the sides of the two sets of fixing seats that are close to each other.

Based on the above technical features, the support plates are arranged at the side ends of the fixing seat, and a distance is left between the two sets of support plates.

Preferably, in the above-mentioned harmful gas sampling device based on unmanned aerial vehicles, the sampling mechanism includes an air bag, an air intake pipe and an air intake hose, the air bag is arranged on the upper side between two sets of support plates, and the air intake The air pipe is arranged on the lower side of the fixed box, and the air intake pipe communicates with the inner cavity of the fixed box, and the air intake hose communicates between the upper end of the air intake pipe and the inner cavity of the air bag.

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

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

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

Preferably, in the above-mentioned harmful gas sampling device based on drones, the second extrusion mechanism includes a second slide bar and a fixed plate, the fixed plate is arranged on the bottom side of the inner cavity of the fixed box, and the first Two sliding rods pass through the fixing plate and the side ends of the fixing seat, and a spring is arranged between the outer peripheral side of the second sliding rod and the fixing plate.

Based on the above technical features, the spring can make the two groups of second sliding rods close to each other, so as to squeeze the intake hose between the two groups of second sliding rods, so that the intake hose is sealed.

Preferably, in the above-mentioned harmful gas sampling device based on drones, 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, the The upper end of the bearing base is rotatably provided with a pulley, and the outer periphery of the pulley is slidably provided with a pulley, one end of the pulley is connected to the bottom side of the wedge block, and the other end of the pulley is connected to the side end of the second slide bar .

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.

Compared with prior art, the beneficial effect of the present invention is:

1. By setting up the lifting mechanism, the sampling mechanism and the symmetrically arranged two sets of first extrusion mechanisms, when the lifting mechanism descends, the airbags in the two sets of first extrusion mechanisms will be squeezed by the first extrusion mechanism. When the mechanism rises, the first extrusion mechanism of the two groups will release the extrusion of the airbag under the action of the second extrusion mechanism and the traction mechanism, so that the airbag automatically returns to its original shape, and during the recovery process, the airbag passes through the intake pipe. And the intake hose can suck the air below into the airbag, thus completing the collection of air.

2. By setting the second extrusion mechanism and the traction mechanism, the two sets of second extrusion mechanisms will gradually move and approach each other during the process of releasing the extrusion of the airbag by the first extrusion mechanism. When the airbag returns to its original shape, the two The second extrusion mechanism of the group stops moving. At this time, the second extrusion mechanism of the two groups will clamp the intake hose, thereby sealing the intake hose, preventing the air bag from circulating with the outside world, and ensuring the accuracy of gas sampling. Tightness.

The invention can use the unmanned aerial vehicle to sample harmful gases, and at the same time seal the sampling device immediately after the sampling, preventing the air circulation between the sampling device and the outside world, and ensuring the tightness and detection accuracy of air sampling.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is an enlarged schematic diagram of the structure of part A of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. UAV body; 2. Fixed box; 3. Lifting mechanism; 31. Electric telescopic rod; 32. Telescopic tube; 33. Lifting plate; 34. Fixed rod; 4. Fixed seat; 41. Support plate; 5. Sampling mechanism; 51, air bag; 52, intake pipe; 53, intake hose; 6, first extrusion mechanism; 61, first slide rod; 62, wedge block; 7, second extrusion mechanism; 71, the first Two slide bars; 72, fixed plate; 73, spring; 8, traction mechanism; 81, bearing seat; 82, pulley; 83, stay cord.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to Fig. 1 and Fig. 2, a kind of harmful gas sampling device embodiment based on unmanned aerial vehicle provided by the present invention: comprise unmanned aerial vehicle body 1, the bottom side of unmanned aerial vehicle main body 1 is provided with fixed box 2, inside fixed box 2 A lifting mechanism 3 is provided on the upper side of the chamber.

The lifting mechanism 3 includes an electric telescopic rod 31 and two groups of telescopic cylinders 32. The electric telescopic rod 31 and two groups of telescopic cylinders 32 are all arranged on the upper side of the inner cavity of the fixed box 1, and the two groups of telescopic cylinders 32 are symmetrically arranged on the sides of the electric telescopic rod 31. On both sides, a lifting plate 33 is arranged between the lower ends of the electric telescopic rod 31 and two groups of telescopic tubes 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 groups of telescopic tubes 32 can This makes the lifting plate 33 more stable during the lifting process.

Both ends of the lower side of the lifting plate 33 are symmetrically provided with fixed rods 34 .

Two sets of fixing seats 4 are arranged at the bottom of the fixing box 2 , and a support plate 41 is arranged on the side where the two groups of fixing seats 4 are close to each other.

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 state after the air bag 51 is squeezed. .

The airbag 51 is arranged on the upper side between the two sets of support plates 41 , and the two sets of support plates 41 support the airbag 51 .

Air intake pipe 52 is arranged on the lower side of fixed case 2, and air intake pipe 52 communicates with the inner cavity of fixed case 2, and intake hose 53 is communicated between the upper end of air intake pipe 52 and the inner cavity of air bag 51, when air bag 51 is When the spherical shape is restored after extrusion, the gas under the fixed box 2 can be sucked into the air bag 51 through the air intake pipe 52 and the air intake hose 53 .

The upper and lower ends of the two sets of fixing bases 4 are respectively symmetrically provided with a first extruding mechanism 6 and a second extruding mechanism 7 .

The first extruding mechanism 6 includes a first sliding rod 61 , the first sliding rod 61 passes through the side end of the fixing seat 4 , and the first sliding rod 61 can slide left and right through the fixing seat 4 .

Wedge blocks 62 are provided at ends of the two sets of first sliding rods 61 away from each other, and the wedge blocks 62 can be moved by pressing down on the slope of the wedge blocks 62 .

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

The second slide bar 71 runs through the side end of the fixed plate 72 and 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, and the spring 73 can drive two groups of second slide bars 71 to be fixed. The plate 72 and the fixing seat 4 slide close to each other.

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

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 the bearing seat 81 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 .

The upper end of the bearing seat 81 is rotatably provided with a pulley 82, and the outer circumference of the pulley 82 is slidably provided with a stay cord 83. One end of the stay cord 83 is connected to the bottom side of the wedge block 62, and the other end of the stay cord 83 is connected to the second slide bar. The side ends of 71 are connected. When the wedge block 62 is pressed down by the lifting mechanism 3 to move, the wedge block 62 can pull the second extrusion mechanism 7 through the pull cord 83, so that the second extrusion mechanism 7 releases the pressure on the intake hose. 53 clamping, on the contrary, when the lifting mechanism 3 rises, the two groups of second extrusion mechanisms 7 will slide close to each other, thereby pulling the first extrusion mechanism 6 through the pull cord 83, so that the first extrusion mechanism 6 releases the sampling Extrusion of mechanism 5.

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 sets of first extrusion mechanisms 6 squeeze the sampling mechanism 5, keep the sampling mechanism 5 in the squeezed state, and then pass the controller Control the UAV body 1 to fly to the area required for sampling. When the UAV body 1 reaches the area, control the lifting mechanism 3 to rise. When the lifting mechanism 3 rises, it will gradually reduce the downward pressure on the first extrusion mechanism 6. pressure, the sampling mechanism 5 will gradually collect and sample the air, and at the same time, the two groups of second extrusion mechanisms 7 will gradually approach, and when the two groups of second extrusion mechanisms 7 approach, the traction mechanism 8 can respectively drive the two groups of first extrusion mechanisms. One squeezing mechanism 6 is far away from each other, so that the first squeezing mechanism 6 gradually releases the squeezing of the sampling mechanism 5 .

When the lifting mechanism 3 and the first extruding mechanism 6 are completely separated, the sampling mechanism 5 has finished sampling, and the second extruding mechanism 7 will squeeze the sampling mechanism 5, so that the sampling mechanism 5 is in a sealed state, and the present invention can use The UAV samples harmful gases, and at the same time seals the sampling device immediately after the sampling, preventing the air circulation between the sampling device and the outside world, and ensuring the tightness and detection accuracy of air sampling.

In the description of this specification, descriptions with reference to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are only to help illustrate the invention. The preferred embodiments are not exhaustive in all detail, nor are the inventions limited to specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This description 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 well understand and utilize the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents.

Claims (7)

1. The utility model provides a harmful gas sampling device based on unmanned aerial vehicle, includes unmanned aerial vehicle body (1), its characterized in that: the unmanned aerial vehicle body (1) bottom side is provided with fixed case (2), fixed case (2) inner chamber upside is provided with elevating system (3), fixed case (2) bottom is provided with two sets of fixing base (4), and is two sets of be provided with sampling mechanism (5) between fixing base (4), it is two sets of the upper and lower end symmetry is provided with first extrusion mechanism (6) and second extrusion mechanism (7) respectively about fixing base (4), be provided with drive mechanism (8) between first extrusion mechanism (6) and second extrusion mechanism (7).

2. The harmful gas sampling device based on unmanned aerial vehicle of claim 1, characterized in that: elevating system (3) are including electric telescopic handle (31) and two sets of telescopic cylinder (32), electric telescopic handle (31) and two sets of telescopic cylinder (32) all set up at fixed case (1) inner chamber upside, and two sets of telescopic cylinder (32) symmetry sets up the both sides in electric telescopic handle (31), be provided with lifter plate (33) between the lower extreme of electric telescopic handle (31) and two sets of telescopic cylinder (32), the downside both ends symmetry of lifter plate (33) is provided with dead lever (34).

3. The unmanned aerial vehicle-based harmful gas sampling device of claim 1, wherein: one side of the two groups of the fixed seats (4) close to each other is provided with a supporting plate (41).

4. The harmful gas sampling device based on unmanned aerial vehicle of claim 1, characterized in that: sampling mechanism (5) are including gasbag (51), intake pipe (52) and air intake hose (53), gasbag (51) set up the upside between two sets of backup pads (41), intake pipe (52) set up the downside at fixed case (2), and intake pipe (52) communicate with each other with the inner chamber of fixed case (2), air intake hose (53) communicate between the inner chamber of the upper end of intake pipe (52) and gasbag (51).

5. The harmful gas sampling device based on unmanned aerial vehicle of claim 1, characterized in that: the first extrusion mechanism (6) comprises a first sliding rod (61), the first sliding rod (61) penetrates through the side end of the fixed seat (4), and wedge-shaped blocks (62) are arranged at two groups of ends, far away from each other, of the first sliding rod (61).

6. The harmful gas sampling device based on unmanned aerial vehicle of claim 1, characterized in that: the second extrusion mechanism (7) comprises a second sliding rod (71) and a fixed plate (72), the fixed plate (72) is arranged at the bottom side of an inner cavity of the fixed box (2), the second sliding rod (71) penetrates through 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 sliding rod (71) and the fixed plate (72).

7. The unmanned aerial vehicle-based harmful gas sampling device of claim 1, wherein: draw gear (8) are including bearing seat (81), bear seat (81) and set up in fixed case (2) inner chamber bottom side, and bear seat (81) and keep away from second extrusion mechanism (7), bear seat (81) upper end and rotate and be provided with pulley (82), the periphery of pulley (82) slides and is provided with stay cord (83), the one end of stay cord (83) and the bottom side of wedge (62) are connected, and the other end of stay cord (83) and the side of second slide bar (71) are connected.

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