Construction project construction harmful gas detection device based on unmanned aerial vehicle

Abstract

The utility model discloses a construction project construction harmful gas detection device based on an unmanned aerial vehicle, which relates to the technical field of construction project construction environment gas detection and comprises an unmanned aerial vehicle body, a landing gear is mounted on the bottom wall of the unmanned aerial vehicle body, two mounting rods are mounted on the landing gear, and gas detection mechanisms are detachably mounted on the mounting rods. The gas detection mechanism comprises a detection box, a gas detection cavity is formed in the detection box, a gas inlet pipeline and a gas outlet pipeline which are communicated with the interior of the gas detection cavity are arranged on the opposite side walls of the detection box respectively, and a gas sensor is detachably installed in the installation cylinder. The harmful gas concentration of an earthwork construction site can be accurately detected in real time, potential safety hazards can be found in time, the position of the gas inlet of the gas inlet pipeline can be adjusted through the electric telescopic rod, interference of fan blades of the unmanned aerial vehicle on gas flow is avoided, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection in construction engineering environments, and in particular to a construction engineering harmful gas detection device based on an unmanned aerial vehicle. Background Art

[0002] During the construction process of a construction project, especially in special geological conditions such as swamps, harmful gases originally present in the strata (such as methane gas) may overflow, posing a threat to the health of construction site workers and the surrounding environment.

[0003] Traditional gas detection methods have problems such as complex operation, low efficiency, and inability to monitor in real time; therefore, the present invention aims to provide a gas detection system carried by an unmanned aerial vehicle, which can detect harmful gases in earthwork construction sites in real time and accurately. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a construction engineering harmful gas detection device based on an unmanned aerial vehicle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A harmful gas detection device for construction engineering based on unmanned aerial vehicle comprises an unmanned aerial vehicle body, a landing gear is installed on the bottom wall of the unmanned aerial vehicle body, two mounting rods are installed on the landing gear, a gas detection mechanism is detachably mounted on the mounting rods, the gas detection mechanism comprises a detection box, a gas detection chamber is arranged inside the detection box, an air inlet pipe and an air outlet pipe connected to the interior of the gas detection chamber are respectively arranged on opposite side walls of the detection box, an exhaust fan is installed inside the gas detection chamber, a mounting tube connected to the interior of the gas detection chamber is also installed on the outer wall of the detection box, a gas sensor is detachably mounted inside the mounting tube.

[0007] The above technical solution further includes: a second threaded hole is opened on the outer wall of the installation tube, and the inner thread of the second threaded hole is connected with a locking screw, and the locking screw is used to lock and fix the gas sensor.

[0008] Furthermore, the detection end of the gas sensor is located on the air outlet path of the air outlet of the air inlet duct.

[0009] Furthermore, a second installation chamber is provided inside the detection box, which is located above the gas detection chamber; a mounting mechanism is provided inside the second installation chamber, and the mounting mechanism includes a bidirectional screw rod rotatably connected to the inner wall of the second installation chamber; one end of the bidirectional screw rod away from the inner wall of the second installation chamber movably passes through the side wall of the detection box and extends to the outside of the detection box; a rotating plate is fixedly installed on one end of the bidirectional screw rod located outside the detection box; threaded sliders are respectively threadedly connected to threads in opposite directions on both sides of the outer wall of the bidirectional screw rod; a connecting rod is fixedly installed on the outer wall of the threaded slider; a bracket connected to the interior of the second installation chamber is provided on the top wall of the detection box; the outer wall of the connecting rod is slidably connected to the inner wall of the bracket; a bracket is fixedly installed on the end of the connecting rod away from the threaded slider, and the bracket is clamped on the mounting rod.

[0010] Furthermore, a first threaded hole is formed on the outer wall of the bracket, and the inner thread of the first threaded hole is connected to a limiting screw rod, and the limiting screw rod is used to limit the mounting rod.

[0011] Furthermore, the air intake duct includes a first air intake pipe, the inner wall of the first air intake pipe is slidably connected to a second air intake pipe, the inner wall of the second air intake pipe is slidably connected to a third air intake pipe, and an air intake cover is fixedly installed at one end of the third air intake pipe located outside the second air intake pipe.

[0012] Furthermore, a first installation chamber is provided inside the detection box below the gas detection chamber, an electric telescopic rod is fixedly installed on the inner wall of the first installation chamber, the telescopic end of the electric telescopic rod movably passes through the side wall of the detection box and extends to the outside of the detection box, a connecting frame is fixedly installed on the telescopic end of the electric telescopic rod, and one end of the connecting frame away from the electric telescopic rod is fixedly connected to the outer wall of the air inlet hood.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, the gas detection mechanism is installed on the drone body, so that the concentration of harmful gases in the earthwork construction site can be detected in real time and accurately, and potential safety hazards can be discovered in time. The air inlet position of the air intake duct can be adjusted through the electric telescopic rod to avoid the interference of the drone fan blades on the airflow, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a first overall structural schematic diagram of a construction engineering harmful gas detection device based on a drone proposed by the utility model;

[0016] Figure 2It is a cross-sectional structural schematic diagram of a construction engineering harmful gas detection device based on a drone;

[0017] Figure 3 A second overall structural schematic diagram of a construction engineering harmful gas detection device based on a drone;

[0018] Figure 4 A third overall structural schematic diagram of a construction engineering harmful gas detection device based on a drone;

[0019] Figure 5 This is a schematic diagram of the structure of the drone body;

[0020] Figure 6 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 7 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 8 for Figure 6 Schematic diagram of the enlarged structure at point C in the middle.

[0023] In the figure:

[0024] 10. UAV body; 11. Landing gear; 12. Mounting rod; 20. Detection box; 21. Mounting tube; 22. Gas sensor; 23. Locking screw; 24. Intake duct; 241. First intake pipe; 242. Second intake pipe; 243. Third intake pipe; 244. Intake hood; 245. Electric telescopic rod; 246. Connecting frame; 25. Exhaust pipe; 26. Gas detection chamber; 27. First installation chamber; 28. Second installation chamber; 29. ​​Exhaust fan; 31. Bidirectional screw; 32. Rotating plate; 33. Threaded slider; 34. Connecting rod; 35. Bracket; 36. Limit screw; 37. First threaded hole. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] See attached Figure 1-8The utility model proposes a construction engineering harmful gas detection device based on drone, comprising a drone body 10, a landing gear 11 is installed on the bottom wall of the drone body 10, two mounting rods 12 are installed on the landing gear 11, and a gas detection mechanism is detachably installed on the mounting rods 12. The gas detection mechanism comprises a detection box 20, and a gas detection chamber 26 is arranged inside the detection box 20 (the gas detection chamber 26 is a closed chamber, and the gas inside the detection box 20 can be exchanged with the external gas through the air inlet pipe 24 and the air outlet pipe 25). The detection box 20 is respectively provided with An air inlet duct 24 and an air outlet pipe 25 connected to the interior of the gas detection chamber 26 are provided, an exhaust fan 29 is installed inside the gas detection chamber 26, and a mounting tube 21 connected to the interior of the gas detection chamber 26 is also installed on the outer wall of the detection box 20, and a gas sensor 22 is detachably installed inside the mounting tube 21; wherein the gas sensor 22 is replaceable, and when detecting methane gas, the gas sensor 22 can select a methane gas detection sensor; in addition, a power supply is also provided inside the detection box 20, and the power supply is used to power the gas sensor 22 and the electric telescopic rod 245.

[0028] A second threaded hole is provided on the outer wall of the mounting tube 21 (the second threaded hole is connected to the interior of the mounting tube 21), and the internal thread of the second threaded hole is connected to a locking screw 23, and the locking screw 23 is used to lock and fix the gas sensor 22; wherein, when the gas sensor 22 is replaced, the locking screw 23 can be rotated counterclockwise to release the pressure of the locking screw 23 on the gas sensor 22, thereby releasing the fixing of the locking screw 23 on the gas sensor 22, and then completing the removal of the gas sensor 22 and replacing it.

[0029] The detection end of the gas sensor 22 is located on the air outlet path of the air outlet of the air intake duct 24 .

[0030] A second installation chamber 28 is arranged above the gas detection chamber 26 in the interior of the detection box 20, and an installation mechanism is arranged inside the second installation chamber 28, and the installation mechanism includes a bidirectional screw rod 31 rotatably connected to the inner wall of the second installation chamber 28, and one end of the bidirectional screw rod 31 away from the inner wall of the second installation chamber 28 movably penetrates the side wall of the detection box 20 and extends to the outside of the detection box 20, and a rotating plate 32 is fixedly installed on one end of the bidirectional screw rod 31 located outside the detection box 20, and threaded sliders 33 are respectively threadedly connected to the threads in opposite directions on both sides of the outer wall of the bidirectional screw rod 31, and a connecting rod 34 is fixedly installed on the outer wall of the threaded slider 33, and a connecting rod 34 is opened on the top wall of the detection box 20 to connect to the second installation chamber 28. The bracket 35 is internally connected, and the outer wall of the connecting rod 34 is slidably connected to the inner wall of the bracket 35. The bracket 35 is fixedly installed at the end of the connecting rod 34 away from the threaded slider 33, and the bracket 35 is clamped on the mounting rod 12; wherein, when installing the detection box 20, first rotate the rotating plate 32 clockwise, and the rotating plate 32 drives the bidirectional screw rod 31 to rotate, and the threads on the outer wall of the bidirectional screw rod 31 are respectively engaged with the threads on the inner walls of the two threaded sliders 33, so that the two threaded sliders 33 move in a direction approaching each other, thereby driving the two connecting rods 34 and the bracket 35 to move in a direction approaching each other, until the two brackets 35 are respectively clamped on the mounting rod 12, and the installation of the detection box 20 is completed.

[0031] A first threaded hole 37 is provided on the outer wall of the bracket 35, and the internal thread of the first threaded hole 37 is connected to a limit screw 36, which is used to limit the mounting rod 12; in order to avoid the installation of the detection box 20 during operation, two limit screws 36 are provided here to close the openings of the two brackets 35 respectively, so as to prevent the detection box 20 from falling off and improve the safety of the device during operation.

[0032] The air intake duct 24 includes a first air intake duct 241, the inner wall of which is slidably connected to a second air intake duct 242, the inner wall of which is slidably connected to a third air intake duct 243, and an air intake cover 244 is fixedly installed at one end of the third air intake duct 243 located outside the second air intake duct 242; wherein, slide rails are respectively provided on the inner walls of the first air intake duct 241 and the second air intake duct 242, and the outer walls of the second air intake duct 242 and the third air intake duct 243 are respectively provided with A slider is connected to the slide rail to prevent the second air inlet pipe 242 from being separated from the first air inlet pipe 241 / the third air inlet pipe 243 from being separated from the second air inlet pipe 242 during movement; by setting the first air inlet pipe 241, the second air inlet pipe 242 and the third air inlet pipe 243, the air inlet position of the air inlet pipe 24 can be extended to the outside of the fan blades on the drone body 10, thereby avoiding the fan blades from interfering with the airflow and causing a large sampling error.

[0033] A first installation chamber 27 is provided inside the detection box 20 below the gas detection chamber 26, and an electric telescopic rod 245 is fixedly installed on the inner wall of the first installation chamber 27. The telescopic end of the electric telescopic rod 245 can move through the side wall of the detection box 20 and extend to the outside of the detection box 20, and a connecting frame 246 is fixedly installed on the telescopic end of the electric telescopic rod 245. The end of the connecting frame 246 away from the electric telescopic rod 245 is fixedly connected to the outer wall of the air intake hood 244; wherein, in order to facilitate the adjustment of the length of the air intake pipe 24, an electric telescopic rod 245 is provided here, and by starting the electric telescopic rod 245 to extend, the air intake hood 244 can be driven to move, thereby driving the third air intake pipe 243 to move out of the second air intake pipe 242, thereby driving the second air intake pipe 242 to move out of the first air intake pipe 241.

[0034] In this embodiment, the working principle of the device is as follows: when using the device to detect harmful gas (methane gas) at an earthwork construction site, first install the detection box 20 on the mounting rod 12, then start the electric telescopic rod 245, and move the position of the air intake hood 244 to a position away from the position below the blades of the drone body 10 through the electric telescopic rod 245, and then start the exhaust fan 29, the exhaust fan 29 generates negative pressure inside the detection box 20, and then the outside air is sucked into the detection box 20 through the air intake hood 244, so that during the flight inspection of the drone body 10, the gas sensor 22 can be used to detect whether there is methane gas;

[0035] The device uses a gas detection mechanism mounted on the drone body to detect the concentration of harmful gases at the earthwork construction site in real time and accurately, thereby promptly discovering potential safety hazards and improving the practicality of the device.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction engineering harmful gas detection device based on drone, characterized in that: The invention comprises an unmanned aerial vehicle (UAV) body (10), a landing gear (11) being mounted on the bottom wall of the UAV body (10), two mounting rods (12) being mounted on the landing gear (11), a gas detection mechanism being detachably mounted on the mounting rods (12), the gas detection mechanism comprising a detection box (20), a gas detection chamber (26) being arranged inside the detection box (20), an air inlet pipe (24) and an air outlet pipe (25) being arranged on opposite side walls of the detection box (20), the gas detection chamber (26) being connected to the inside of the detection box (26), an exhaust fan (29) being mounted inside the detection chamber (26), a mounting tube (21) being mounted on the outer wall of the detection box (20), the mounting tube (21) being detachably mounted with a gas sensor (22) inside.

2. The construction engineering harmful gas detection device based on drone according to claim 1 is characterized in that: A second threaded hole is formed on the outer wall of the installation cylinder (21), and a locking screw (23) is threadedly connected inside the second threaded hole. The locking screw (23) is used to lock and fix the gas sensor (22).

3. The construction engineering harmful gas detection device based on drone according to claim 2 is characterized in that: The detection end of the gas sensor (22) is located on the air outlet path of the air outlet of the air inlet duct (24).

4. The construction engineering harmful gas detection device based on drone according to claim 1 is characterized in that: A second installation chamber (28) is arranged inside the detection box (20) above the gas detection chamber (26), and an installation mechanism is arranged inside the second installation chamber (28), wherein the installation mechanism comprises a bidirectional screw rod (31) rotatably connected to the inner wall of the second installation chamber (28), and one end of the bidirectional screw rod (31) away from the inner wall of the second installation chamber (28) movably penetrates the side wall of the detection box (20) and extends to the outside of the detection box (20), and one end of the bidirectional screw rod (31) located outside the detection box (20) is fixedly installed with a rotating plate (32), threaded sliders (33) are respectively threadedly connected on the threads in opposite directions on both sides of the outer wall of the bidirectional screw rod (31), and a connecting rod (34) is fixedly installed on the outer wall of the threaded slider (33). A bracket (35) connected to the interior of the second installation chamber (28) is opened on the top wall of the detection box (20), and the outer wall of the connecting rod (34) is slidably connected to the inner wall of the bracket (35), and a bracket (35) is fixedly installed on the end of the connecting rod (34) away from the threaded slider (33), and the bracket (35) is clamped on the installation rod (12).

5. The construction engineering harmful gas detection device based on drone according to claim 4 is characterized in that: A first threaded hole (37) is provided on the outer wall of the bracket (35); the inner thread of the first threaded hole (37) is connected to a limiting screw rod (36); the limiting screw rod (36) is used to limit the position of the mounting rod (12).

6. The construction engineering harmful gas detection device based on drone according to claim 1 is characterized in that: The air intake duct (24) comprises a first air intake pipe (241), the inner wall of the first air intake pipe (241) is slidably connected to a second air intake pipe (242), the inner wall of the second air intake pipe (242) is slidably connected to a third air intake pipe (243), and an air intake cover (244) is fixedly mounted on one end of the third air intake pipe (243) located outside the second air intake pipe (242).

7. The construction engineering harmful gas detection device based on drone according to claim 6 is characterized in that: A first installation chamber (27) is provided inside the detection box (20) and is located below the gas detection chamber (26); an electric telescopic rod (245) is fixedly installed on the inner wall of the first installation chamber (27); the telescopic end of the electric telescopic rod (245) movably passes through the side wall of the detection box (20) and extends to the outside of the detection box (20); a connecting frame (246) is fixedly installed on the telescopic end of the electric telescopic rod (245); and one end of the connecting frame (246) away from the electric telescopic rod (245) is fixedly connected to the outer wall of the air inlet hood (244).

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