Detection equipment for emission amount of nitrogen oxide in tail gas of heavy duty vehicle

Abstract

The utility model belongs to the technical field of automobile tail gas monitoring, and particularly relates to detection equipment for emission of nitrogen oxides in tail gas of a heavy vehicle, which comprises a fixed seat, a protection box fixedly mounted on the left side of the fixed seat, an axial flow fan box fixedly mounted on the back of the protection box, a first mounting box fixedly mounted on the back of the axial flow fan box, and a second mounting box fixedly mounted on the left side of the first mounting box. A first filter screen plate is movably mounted in the first mounting box, a second mounting box is fixedly mounted on the front face of the protection box, a second filter screen plate is movably mounted in the second mounting box, a connecting plate is fixedly mounted on the left side of the protection box, and a fixing mechanism is arranged in the connecting plate. And a mounting seat is movably mounted on the left side of the connecting plate. According to the detection equipment for the emission amount of the nitrogen oxides in the tail gas of the heavy vehicle, by arranging the fixing mechanism, the equipment has a better mounting and fixing effect and an effect of being convenient to maintain, meanwhile, the equipment can also have a better protection effect, and the heat dissipation effect and the filtering effect of the equipment can also be enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle exhaust monitoring, and particularly relates to a detection device for the nitrogen oxide emission in the exhaust gas of heavy vehicles. Background Art

[0002] The main pollutants in vehicle exhaust are hydrocarbons, nitrogen oxides, carbon monoxide, sulfur dioxide, lead compounds, benzo[a]pyrene and solid particles. These pollutants cause great harm to human physical and mental health and the ecological environment. For the ecological environment, pollutants such as nitrogen oxides released during gasoline combustion are the main culprits of global warming. For humans, long-term inhalation of pollutants emitted by vehicles can damage human cells, reduce human immunity, and easily cause respiratory and cardiovascular diseases.

[0003] With the development of society, the number of automobiles in China is extremely large. Therefore, the monitoring of vehicle exhaust is particularly important. A device for detecting the nitrogen oxide emission in vehicle exhaust is disclosed in the patent No. 201720050316.0. In this solution, a nitrogen oxide sensor obtains the concentration of nitrogen oxides in vehicle exhaust, and the current driving speed of the vehicle and the mass flow rate of vehicle exhaust are obtained according to a vehicle speed sensor and an exhaust gas displacement sensor respectively, so as to calculate the nitrogen oxide emission in vehicle exhaust. The structure is simple, easy to install and use, has high detection efficiency and low cost. However, in this technical solution, the described structure requires a protection device for installation and protection. At the same time, most of the existing protection devices are externally protected and installed by fixing a box body through threads, which is not convenient for maintenance. The heat dissipation method usually adopts heat dissipation through openings, lacks a filtering function, and the heat dissipation effect is limited. Therefore, a detection device for the nitrogen oxide emission in the exhaust gas of heavy vehicles is proposed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a detection device for the nitrogen oxide emission in the exhaust gas of heavy vehicles, which has the advantages of good heat dissipation effect, good filtering effect and convenient maintenance, and solves the problems that in this technical solution, the described structure requires a protection device for installation and protection, and at the same time, most of the existing protection devices are externally protected and installed by fixing a box body through threads, which is not convenient for maintenance, the heat dissipation method usually adopts heat dissipation through openings, lacks a filtering function, and the heat dissipation effect is limited.

[0005] The technical solution adopted by the present utility model to solve its technical problems is: a detection device for the nitrogen oxide emissions in the exhaust gas of heavy vehicles, including a fixed seat, on one side of the fixed seat, a protection box is fixedly installed, on the back of the protection box, an axial flow fan box is fixedly installed, on the back of the axial flow fan box, a first installation box is fixedly installed, inside the first installation box, a first filter plate is movably installed, on the front of the protection box, a second installation box is fixedly installed, inside the second installation box, a second filter plate is movably installed, on one side of the protection box, a connecting plate is fixedly installed, and a fixing mechanism is arranged inside the connecting plate;

[0006] The fixing mechanism includes a fixing rod, the fixing rod is movably installed inside the connecting plate, a limiting disk is fixedly installed at the first end of the fixing rod, clamping plates are fixedly installed at the top and bottom of the limiting disk, a base is fixedly installed inside the mounting seat, a connecting seat is fixedly installed inside the base, a telescopic rod is fixedly installed on one side of the connecting seat, and a spring cylinder is sleeved on the outer surface of the telescopic rod.

[0007] Preferably, a first slot adapted to the first filter plate is provided inside the first installation box, and a second slot adapted to the second filter plate is provided inside the second installation box.

[0008] Preferably, ventilation openings are provided on the front and back of the first installation box and the second installation box, and a through hole adapted to the fixing rod is provided inside the connecting plate.

[0009] Preferably, the number of the fixing mechanisms is four, and torsion disks are threadedly connected to the second ends of the four fixing rods.

[0010] Preferably, a limiting groove adapted to the limiting disk and the two clamping plates is provided inside the mounting seat, and the base, the connecting seat, the telescopic rod, and the spring cylinder are all located inside the limiting groove.

[0011] Preferably, filter holes are provided inside both the first filter plate and the second filter plate, the filter holes are arranged equidistantly inside the first filter plate and the second filter plate, and the filtering aperture of the second filter plate is smaller than that of the first filter plate.

[0012] Preferably, a mounting seat is movably installed on one side of the connecting plate, a control panel is provided on one side of the mounting seat, and a lifting ring is fixedly installed on the top of the protection box.

[0013] The present utility model has the following beneficial effects:

[0014] 1) By setting the fixing mechanism, the device has a better installation and fixing effect and is convenient for maintenance. At the same time, the device has a more excellent protection effect, strengthens the heat dissipation effect and the filtering effect of the device, and can effectively extend the service life of the device;

[0015] 2) The structure of the present utility model needs to be installed and fixed by a protection device. Most of the existing protection devices use a box body and are fixed by threaded connection, which is not convenient for daily maintenance. At the same time, heat dissipation is carried out by opening through holes, lacking a filtering effect. The setting of the fixing mechanism effectively solves this problem. Compared with the existing equipment, it is more excellent in use effect and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional view of the structure of the present utility model.

[0017] Figure 2 It is a front cross-sectional view of the structure of the present utility model.

[0018] Figure 3 It is a side view of the structure of the present utility model.

[0019] Figure 4 It is an enlarged structural view of part A of the structure of the present utility model.

[0020] In the figure: 1 - fixing base; 2 - protection box; 3 - axial flow fan box; 4 - first installation box; 5 - first filter screen plate; 6 - second installation box; 7 - second filter screen plate; 8 - connecting plate; 9 - fixing mechanism; 901 - fixing rod; 902 - limiting disc; 903 - clamping plate; 904 - base; 905 - connecting seat; 906 - telescopic rod; 907 - spring cylinder; 10 - installation seat; 11 - control panel; 12 - carrying handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Now, the present utility model will be further described in detail with reference to the accompanying drawings.

[0022] As Figures 1-4 shown, a detection device for the nitrogen oxide emission in the exhaust gas of a heavy vehicle includes a fixing base 1. One side of the fixing base 1 is fixedly installed with a protection box 2. The back of the protection box 2 is fixedly installed with an axial flow fan box 3. The back of the axial flow fan box 3 is fixedly installed with a first installation box 4. A first filter screen plate 5 is movably installed inside the first installation box 4. The front of the protection box 2 is fixedly installed with a second installation box 6. A second filter screen plate 7 is movably installed inside the second installation box 6. One side of the protection box 2 is fixedly installed with a connecting plate 8. A fixing mechanism 9 is provided inside the connecting plate 8. One side of the connecting plate 8 is movably installed with an installation seat 10. One side of the installation seat 10 is provided with a control panel 11. The top of the protection box 2 is fixedly installed with a carrying handle 12;

[0023] The fixing mechanism 9 includes a fixing rod 901, the fixing rod 901 is movably installed inside the connecting plate 8, a limiting disk 902 is fixedly installed on one end of the fixing rod 901, and a clamping plate 903 is fixedly installed on the top and bottom of the limiting disk 902. A base 904 is fixedly installed inside the mounting seat 10, a connecting seat 905 is fixedly installed inside the base 904, a telescopic rod 906 is fixedly installed on one side of the connecting seat 905, and a spring tube 907 is sleeved on the outer surface of the telescopic rod 906.

[0024] In the case implementation, the setting of the fixing seat 1 can be used to install and fix the protection box 2, and can also support the equipment. The setting of the protection box 2 can protect the equipment from the outside. The axial fan box 3 is provided with an axial fan inside, and the axial fan can be used to dissipate heat and accelerate the internal air flow to improve the heat dissipation effect. The setting of the first installation box 4 and the second installation box 6 can be used to install the first filter plate 5 and the second filter plate 7 respectively. The setting of the connecting plate 8 can be used to install, fix and limit the fixing rod 901, and can also connect and fix the protection box 2 to the mounting seat 10. The setting of the control panel 11 can control the equipment. The setting of the carrying ring 12 can be convenient for the staff to carry.

[0025] The operation process of this utility model:

[0026] 1) First, twist the torsion plate 90°. The 90° rotation of the torsion plate can drive the fixed rod 901 to rotate simultaneously;

[0027] 2) Then the rotation of the fixing rod 901 further drives the limiting plate 902 to rotate at the same time, and the rotation of the limiting plate 902 can also drive the clamping plate 903 to rotate at the same time;

[0028] 3) When the clamping plate 903 rotates to align with the limiting groove, the reaction force of the spring tube 907 can be used to drive the telescopic rod 906 to reset, so that the limiting plate 902 and the clamping plate 903 are separated from the limiting groove. At this time, the mounting seat 10 and the connecting plate 8 can be disassembled;

[0029] 4) Finally, the torsion plate is rotated 90° again, and the card plate 903 will be misaligned with the limit slot. When misaligned, the limit plate 902 and the card plate 903 are stuck inside the limit slot. Through the reaction force of the spring tube 907, the telescopic rod 906 can be driven to support the limit plate 902, so that the card plate 903 is fixed more securely.

[0030] By setting the fixing mechanism 9, the device has a better installation and fixing effect and is easy to maintain. At the same time, the device can have a more outstanding protection effect, and the heat dissipation and filtering effects of the device can be enhanced, which can effectively extend the service life of the device.

[0031] The present utility model is not limited to the above-mentioned embodiments. Any person should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model.

[0032] The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A device for detecting nitrogen oxide emissions in exhaust gas of a heavy-duty vehicle, comprising a fixing seat (1), characterized in that: A protection box (2) is fixedly mounted on one side of the fixing seat (1); an axial flow fan box (3) is fixedly mounted on the back of the protection box (2); a first installation box (4) is fixedly mounted on the back of the axial flow fan box (3); a first filter screen plate (5) is movably mounted inside the first installation box (4); a second installation box (6) is fixedly mounted on the front of the protection box (2); a second filter screen plate (7) is movably mounted inside the second installation box (6); a connecting plate (8) is fixedly mounted on one side of the protection box (2); a fixing mechanism (9) is provided inside the connecting plate (8); The fixing mechanism (9) comprises a fixing rod (901), the fixing rod (901) is movably installed inside the connecting plate (8), a limiting plate (902) is fixedly installed on the first end of the fixing rod (901), a clamping plate (903) is fixedly installed on the top and bottom of the limiting plate (902), a base (904) is fixedly installed inside the mounting seat (10), a connecting seat (905) is fixedly installed inside the base (904), a telescopic rod (906) is fixedly installed on one side of the connecting seat (905), and a spring tube (907) is sleeved on the outer surface of the telescopic rod (906).

2. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 1, characterized in that: A first slot adapted to fit the first filter screen plate (5) is provided inside the first installation box (4), and a second slot adapted to fit the second filter screen plate (7) is provided inside the second installation box (6).

3. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 2, characterized in that: The front and back sides of the first installation box (4) and the second installation box (6) are both provided with ventilation holes, and the interior of the connecting plate (8) is provided with a through hole that matches the fixing rod (901).

4. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 1, characterized in that: The number of the fixing mechanisms (9) is four, and the second ends of the four fixing rods (901) are all threadedly connected to a torsion disc.

5. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 1, characterized in that: The interior of the mounting seat (10) is provided with a limiting groove matched with the limiting plate (902) and the two clamping plates (903), and the base (904), the connecting seat (905), the telescopic rod (906), and the spring tube (907) are all located inside the limiting groove.

6. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 1, characterized in that: The first filter screen plate (5) and the second filter screen plate (7) are both provided with filter screen holes inside, the filter screen holes are arranged at equal distances inside the first filter screen plate (5) and the second filter screen plate (7), and the filter aperture of the second filter screen plate (7) is smaller than the filter aperture of the first filter screen plate (5).

7. The device for detecting nitrogen oxide emissions in exhaust gas of heavy-duty vehicles according to claim 1, characterized in that: A mounting seat (10) is movably mounted on one side of the connecting plate (8), a control panel (11) is provided on one side of the mounting seat (10), and a hand ring (12) is fixedly mounted on the top of the protection box (2).

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