Harmful gas concentration detector

Abstract

The utility model relates to the technical field of harmful gas detection, and particularly discloses a harmful gas concentration detector which comprises a detector body, the gas inlet pipeline is arranged at one end of the detector body; the telescopic pipeline is communicated with the gas inlet pipeline; the adjusting mechanism is arranged on the detector body and is used for driving the telescopic pipeline to lift; the adjusting mechanism comprises a counterweight piece arranged at the end part of the telescopic pipeline, a pull rope connected with the counterweight piece, a wire roller which is rotationally connected to the side wall of the detector body and can be wound by the pull rope, and a steering engine which is arranged in the detector body and drives the wire roller to rotate. And air detection is easily influenced by a propeller of the unmanned aerial vehicle, so that a large error of a detection result is caused.

Description

Technical Field

[0001] The present application relates to the technical field of harmful gas detection, and specifically discloses a harmful gas concentration detector. Background Art

[0002] Hazardous gas concentration detectors are generally used to detect hazardous or flammable and explosive gases in the air, such as carbon monoxide, sulfur dioxide, nitrogen oxides, and volatile organic compounds. They are widely used in industrial fields, indoor environmental monitoring, and vehicle exhaust emission monitoring. In potentially hazardous environments, such as coal mines and chemical plants, hazardous gas detection can help detect and prevent accidents in a timely manner. Furthermore, in indoor environments, hazardous gas detection can also be used to ensure indoor air quality and protect people's health.

[0003] With the application of drones in various fields, the use of drones for environmental testing has gradually become popular. However, the air inlet of traditional harmful gas concentration detectors for detecting gas intake is usually directly set on the side wall of the shell. As a result, when using drones for environmental testing, the air entering the harmful gas concentration detector for testing is easily affected by the drone propeller, resulting in large errors in the detection results. Therefore, in view of this, the inventor provides a harmful gas concentration detector to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the traditional harmful gas concentration detector is easily affected by the propeller of the drone, which leads to large errors in the detection results.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the present utility model provides a harmful gas concentration detector, comprising:

[0006] Detector body;

[0007] An air intake pipe provided at one end of the detector body and a telescopic pipe communicating with the air intake pipe;

[0008] An adjusting mechanism is provided in the detector body and drives the telescopic pipe to rise and fall. The adjusting mechanism includes a counterweight provided at the end of the telescopic pipe, a pull rope connected to the counterweight, a wire roller rotatably connected to the side wall of the detector body and capable of winding the pull rope, and a servo provided in the detector body and driving the wire roller to rotate.

[0009] The principles and effects of this basic solution are:

[0010] Compared with the existing technology, the utility model sets a telescopic pipe and an adjustment mechanism, uses a servo to drive the line roller to rotate, so that the pull rope rises or falls, and uses the gravity of the counterweight to drive the end of the telescopic pipe to rise or fall. When a drone is used to carry a harmful gas concentration detector for environmental testing, the telescopic pipe can be lowered away from the drone propeller, thereby solving the problem that the detected air is easily affected by the drone propeller, resulting in large errors in the detection results.

[0011] Furthermore, the end of the telescopic tube is provided with a bell mouth, and the counterweight is a counterweight ring located above and coaxial with the bell mouth, through which the telescopic tube passes. This arrangement maintains the balance of the telescopic tube and prevents the tube from tilting excessively and colliding with other parts of the drone.

[0012] Furthermore, there are multiple pull ropes symmetrically arranged along both sides of the counterweight ring. This arrangement can make the force on the counterweight ring more balanced, thereby maintaining the balance of the telescopic pipe.

[0013] Furthermore, the side walls of the detector body are symmetrically provided with rotating shafts driven by the steering gear. Two line rollers are coaxially connected to the rotating shafts, each of which is also coaxially connected to a mutually meshing gear. The steering gear drives one of the rotating shafts to rotate, and the rotation of the gears causes the two rotating shafts to rotate synchronously relative to each other, thereby driving the line rollers on the two rotating shafts to rotate synchronously relative to each other, and in turn, driving the pull ropes on both sides of the counterweight ring to rise or fall synchronously driven by the line rollers.

[0014] Furthermore, the line roller includes a sleeve keyed to the rotating shaft, baffles located at each end of the sleeve, and a center plate located at the center of the sleeve. The center plate is located directly above the centerline of the counterweight ring. The pull rope connected to the counterweight ring is wrapped between the center plate and the baffles. This arrangement allows multiple sections of pull rope to be installed on the same rotating shaft, further maintaining the stability of the counterweight ring and telescopic pipe.

[0015] Furthermore, the center plate is provided with a notch through which the middle portion of the drawstring passes. The ends of the drawstring are respectively wrapped around the drums on either side of the center plate and then connected to the counterweight ring. This arrangement allows a length of drawstring to be wrapped around either side of the center plate, allowing both ends of a single drawstring to be connected to the counterweight ring. This not only facilitates wrapping the drawstring around the drum but also reduces the need for accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a harmful gas concentration detector proposed in an embodiment of the present application is shown;

[0018] Figure 2 Shown Figure 1 Enlarged view of part A;

[0019] Figure 3 A schematic diagram of an adjustment component in a harmful gas concentration detector proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0021] The figure marks in the drawings of the specification include: drone 1, detector body 2, protective shell 3, induced draft fan 4, air intake duct 5, telescopic duct 6, bell mouth 7, counterweight ring 8, pull rope 9, rotating shaft 10, baffle 11, roller 12, center plate 13, gear 14, and slot 15.

[0022] A harmful gas concentration detector, for example Figure 1 As shown: it includes a detector body 2, an air intake pipe 5 provided on the side wall of the detector body 2, a telescopic pipe 6 connected to the air intake pipe 5, and an adjustment mechanism provided on the detector body 2 and used to adjust the lifting and lowering of the end of the telescopic pipe 6.

[0023] A mounting plate is provided at the bottom of the detector body 2 and is fixed to the drone 1 by bolts. The detector body 2 is equipped with a detection probe, a circuit board, a communication chip and a built-in power supply to detect the inhaled air environment.

[0024] The air inlet duct 5 is a hard duct, and an induced draft fan 4 is arranged on the air inlet duct 5 to suck in the air at the end of the telescopic duct 6, and enter the detector body 2 through the telescopic duct 6 and the air inlet duct 5 to contact the detection probe.

[0025] like Figure 2As shown, the telescopic pipe 6 adopts an axially retractable corrugated pipe, and the adjustment mechanism includes a counterweight provided at the end of the telescopic pipe 6, a pull rope 9 connected to the counterweight, a protective shell 3 provided on the side wall of the detector body 2, a wire roller rotatably connected to the protective shell 3 and capable of accommodating the pull rope 9 to be wound, and a servo provided in the detector body 2 and driving the wire roller to rotate.

[0026] In this embodiment, a bell mouth 7 is provided at the end of the telescopic pipe 6, and the counterweight is a counterweight ring 8 which is arranged above the bell mouth 7 and is coaxial with the bell mouth 7. The telescopic pipe 6 passes through the counterweight ring 8, and there are four pull ropes 9 connected to the counterweight ring 8, which are symmetrically arranged along both sides of the counterweight ring 8 to maintain the overall balance.

[0027] like Figure 3 As shown, a rotating shaft 10 is symmetrically connected to the protective shell 3, and a gear 14 is keyed to the end of the rotating shaft 10. The gears 14 on the two rotating shafts 10 are meshed with each other. The servo is arranged in the detector body 2 and drives one of the rotating shafts 10 to rotate. The line roller includes a sleeve keyed to the rotating shaft 10, baffles 11 respectively arranged at both ends of the sleeve and a center plate 13 arranged at the center of the sleeve, and the center plate 13 is located directly above the center line of the counterweight ring 8. A notch 15 is provided on the center plate 13, and the middle part of the pull rope 9 passes through the notch 15. The two ends of the pull rope 9 are symmetrically wound around the rollers 12 on both sides of the center plate 13, and then connected to the counterweight ring 8. That is, the two sections of pull rope 9 connected to the same side of the counterweight ring 8 are the two ends of the same pull rope 9. Of course, the directions of the notches 15 on the two rotating shafts 10 and the winding direction of the pull rope 9 are also symmetrical to each other.

[0028] In this embodiment, the servo is used to drive one of the rotating shafts 10 to rotate, and then the two rotating shafts 10 are synchronously rotated relative to each other through the rotation of the gear 14, which can drive the line rollers located on the two rotating shafts 10 to rotate synchronously relative to each other, and then can simultaneously drive the pull ropes 9 located on both sides of the counterweight ring 8 to rise or fall synchronously under the drive of the line rollers, and then use the gravity of the counterweight to drive the end of the telescopic pipe 6 to rise or fall, so that when the drone 1 is equipped with a harmful gas concentration detector for environmental testing, the telescopic pipe 6 can be lowered away from the propeller of the drone 1, thereby solving the problem that the detected air is easily affected by the propeller of the drone 1, resulting in large errors in the detection results. In this process, multiple pull ropes 9 cooperate with each other to maintain the stability of the counterweight ring 8 and the telescopic pipe 6 as a whole, and avoid the problem of excessive tilt of the telescopic pipe 6 and collision with other parts of the drone 1.

[0029] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A harmful gas concentration detector, characterized in that: include: Detector body; An air intake pipe provided at one end of the detector body and a telescopic pipe communicating with the air intake pipe; An adjusting mechanism is provided in the detector body and drives the telescopic pipe to rise and fall. The adjusting mechanism includes a counterweight provided at the end of the telescopic pipe, a pull rope connected to the counterweight, a wire roller rotatably connected to the side wall of the detector body and capable of winding the pull rope, and a servo provided in the detector body and driving the wire roller to rotate.

2. A harmful gas concentration detector according to claim 1, characterized in that: The end of the telescopic pipe is provided with a bell mouth, the counterweight is a counterweight ring provided above the bell mouth and coaxial with the bell mouth, and the telescopic pipe passes through the counterweight ring.

3. A harmful gas concentration detector according to claim 2, characterized in that: There are a plurality of pull ropes symmetrically arranged along both sides of the counterweight ring.

4. A harmful gas concentration detector according to claim 3, characterized in that: The side wall of the detector body is symmetrically provided with a rotating shaft driven by the steering gear. There are two line rollers and they are coaxially connected to the rotating shaft respectively. The rotating shafts are also coaxially connected to gears that mesh with each other.

5. A harmful gas concentration detector according to claim 4, characterized in that: The line roller includes a sleeve connected to the rotating shaft key, baffles respectively arranged at both ends of the sleeve and a center plate arranged at the center of the sleeve. The center plate is located directly above the center line of the counterweight ring, and the pull rope connected to the counterweight ring is wrapped between the center plate and the baffle.

6. A harmful gas concentration detector according to claim 5, characterized in that: The center plate is provided with a notch, the middle portion of the pull rope passes through the notch, and both ends of the pull rope are respectively wound around the rollers on both sides of the center plate and then connected to the counterweight ring.

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