A vehicle-mounted environment air and exhaust gas monitoring device

Abstract

The present application relates to the technical field of environmental monitoring, and more particularly to a vehicle-mounted environmental air and exhaust gas monitoring device.The present application provides a vehicle-mounted environmental air and exhaust gas monitoring device capable of adjusting the air flow at the monitoring probe according to the vehicle speed, thereby improving the accuracy and reliability of the monitoring results.The vehicle-mounted environmental air and exhaust gas monitoring device comprises a bottom plate, a support rod and a monitoring probe, etc.The support rod is connected to the upper side of the left part of the bottom plate, and the monitoring probe is connected to the upper side of the support rod.When the vehicle travels at a high speed, the sliding plate continues to move to the right, driving the connecting rod to continue to move to the right, so that the connecting rod moves along the second guide frame to approach each other, driving the sliding frame to approach each other, thereby reducing the air intake in the protective cover, achieving the effect of adjusting the air flow at the monitoring probe according to the vehicle speed, thereby improving the accuracy and reliability of the monitoring results.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, and in particular to a vehicle-mounted ambient air and exhaust gas monitoring device. Background Technology

[0002] A vehicle-mounted ambient air and exhaust gas monitoring device is a specialized device designed for mobile monitoring of ambient air quality and vehicle exhaust emissions. This device can be installed on a vehicle and monitors air quality and pollution source emissions in real time at different locations as the vehicle travels.

[0003] Existing vehicle-mounted ambient air and exhaust gas monitoring devices monitor air quality by sampling the air that enters the system while the vehicle is in motion. However, since the vehicle's speed often changes, the air intake of the sampling system increases when the vehicle is traveling at high speed, which may cause more particulate matter and gaseous components to be drawn into the system, affecting the uniformity of sampling and easily damaging the sampling system, thus affecting monitoring.

[0004] Therefore, a vehicle-mounted ambient air and exhaust gas monitoring device has now been developed that can adjust the airflow at the monitoring probe according to the vehicle speed, thereby improving the accuracy and reliability of the monitoring results. Summary of the Invention

[0005] To overcome the shortcomings of existing vehicle-mounted ambient air and exhaust gas monitoring devices, which have the disadvantage of increasing air intake during high-speed vehicle operation, potentially leading to more particulate matter and gaseous components being drawn into the system, affecting sampling uniformity, and easily damaging the sampling system, this invention provides a vehicle-mounted ambient air and exhaust gas monitoring device that can adjust the airflow at the monitoring probe according to vehicle speed, thereby improving the accuracy and reliability of monitoring results.

[0006] Technical solution: A vehicle-mounted ambient air and exhaust gas monitoring device includes a base plate, a support rod, a monitoring probe, and an adjustment mechanism. The support rod is connected to the upper left side of the base plate, and the monitoring probe is connected to the upper side of the support rod. The base plate is equipped with an adjustment mechanism that can adjust the airflow in the monitoring area.

[0007] Furthermore, preferably, the adjusting mechanism includes a protective cover, a sliding frame, a first guide frame, a first spring, a second guide frame, a connecting rod, a third guide frame, a sliding plate, and a second spring. The protective cover is connected to the upper left side of the base plate, and the support rod is located inside the protective cover. Two sliding frames, one front and one rear, are slidably connected to the upper left side of the protective cover. The first guide frame is connected to the upper left side of the protective cover and is located above the sliding frames. The upper parts of each sliding frame are slidably connected to the first guide frame, and a first spring connects each sliding frame to the first guide frame. Two second guide frames, one front and one rear, are connected to the upper right side of the base plate. Each second guide frame has a rotatable and slidably connected connecting rod on its upper part. The frame is rotatably connected to the adjacent connecting rod. Multiple third guide frames are connected to the upper right side of the base plate. The third guide frames are located between the second guide frames. Sliding plates are slidably connected between the third guide frames. The connecting rods are rotatably connected to the sliding plates. The third guide frames at both the front and rear are connected to the sliding plates with second springs. When the vehicle is driving normally, the sliding plates are affected by the wind and move to the right along the third guide frames. The second springs are compressed and contracted. At this time, the connecting rods move to the right and rotate, causing the connecting rods to move away from each other on the second guide frames. This causes the sliding frames to move away from each other along the first guide frames. The first springs are compressed and contracted, causing the protective cover to open and allow air to enter.

[0008] Furthermore, it is particularly preferred that the dust collection mechanism includes a dual-axis motor, a lead screw, a fourth guide frame, connecting parts, a housing, and a collection chamber. The dual-axis motor is connected to the right side of the middle of the protective cover, and a lead screw is connected to the output shaft of the dual-axis motor. The threads on the lead screws are in opposite directions. The fourth guide frame is connected to the right side of the lower part of the protective cover, and connecting parts are threadedly connected to the lead screws. Connecting parts are also slidably connected to the front and rear parts of the fourth guide frame. A housing is connected between each pair of adjacent connecting parts, and a collection chamber is snapped onto each housing. When the dual-axis motor is started, it drives the lead screw to rotate, causing the connecting parts and the housing to move away from each other along the fourth guide frame, reducing the influence of airflow at the protective cover, and allowing the collection chamber to collect dust and other suspended particles in the air.

[0009] In addition, it is particularly preferred that the collection compartments are equipped with handles.

[0010] Furthermore, it is particularly preferred that the device also includes a quick-release mechanism, which includes a mounting plate, a guide rail, a slider, a first fixed seat, a limiting bracket, and a first torsion spring. The slider is connected to the lower side of the base plate, and the guide rail is slidably and detachably connected to the slider. The mounting plate is connected to the lower side of the guide rail, and the first fixed seats are connected to the left and right sides of the mounting plate. The first fixed seats are rotatably connected to the front and rear limiting brackets, and the first torsion spring is connected between each limiting bracket and the first fixed seat. When installing the base plate, the mounting plate is fixed to the top of the vehicle, and then the slider is inserted into the guide rail. The guide rail limits the right side of the slider, so that the slider can only slide to the left. At this time, the force of the first torsion spring makes the limiting bracket on the first fixed seat fit tightly against the base plate, so that the base plate is fixed on the mounting plate.

[0011] Furthermore, it is particularly preferred that the device also includes a filtration mechanism, which includes a second fixed base, a filter screen, a fifth guide frame, and a limiting component. The second fixed base is connected to both the front and rear sides of the lower part of the protective cover, and the filter screen is connected to the second fixed base by a damped rotational connection. The fifth guide frame is connected to the upper left side of the bottom plate and is located on the left side of the protective cover. The limiting component is connected to the fifth guide frame by a damped sliding connection. By rotating the filter screen, the filter screen is positioned on the left side of the collection chamber to intercept floating fallen leaves.

[0012] Furthermore, it is particularly preferred that the device also includes a wind-breaking mechanism, which includes a third fixed seat, a wind guide plate, a second torsion spring, and a wind-breaking frame. The third fixed seat is connected to the upper left side of the protective cover, and the wind guide plate is rotatably connected to the third fixed seat. Multiple second torsion springs are connected between the wind guide plate and the third fixed seat. The wind-breaking frame is connected to the left side of the wind guide plate. When the vehicle is moving, the airflow is guided by the wind guide plate to the sliding plate. The force of the second torsion spring keeps the wind guide plate in a relative position, and the wind-breaking frame disperses the airflow.

[0013] Furthermore, it is particularly preferred that the air guide plate is curved.

[0014] In addition, it is particularly preferred that the system also includes a support mechanism, which includes a slide rod, a pad, and a third spring. The left and right sides of the base plate are connected to two slide rods in a damped sliding manner. A pad is connected to the lower side of each slide rod. A third spring is connected between each pad and the base plate. After the base plate is fixed to the roof, the pad on the slide rod is kept in close contact with the roof by the force of the third spring.

[0015] In addition, it is particularly preferred that the pad is made of rubber.

[0016] Beneficial effects: 1. When the vehicle is traveling at a high speed, the present invention moves the sliding plate to the right, which in turn moves the connecting rod to the right. This causes the connecting rod to move closer together along the second guide frame, which in turn moves the sliding frame closer together, reducing the amount of air intake in the protective cover. This achieves the effect of adjusting the air flow at the monitoring probe according to the vehicle speed, thereby improving the accuracy and reliability of the monitoring results.

[0017] 2. This invention starts a dual-axis motor, which drives the lead screw to rotate, causing the connecting parts and the outer shell to move away from each other along the fourth guide frame. This reduces the influence of airflow at the protective cover, allowing the collection chamber to collect dust and other suspended particles in the air, thus achieving the effect of collecting dust and other suspended particles in the air and improving the reliability of air monitoring.

[0018] 3. This invention fixes the mounting plate to the top of the vehicle and then inserts the slider into the guide rail. The guide rail limits the right side of the slider, so that the slider can only slide to the left. At this time, the force of the first torsion spring makes the limiting bracket on the first fixing seat tightly adhere to the base plate, so that the base plate is fixed on the mounting plate. This achieves the effect of quick and convenient disassembly and assembly on the vehicle, improving the efficiency of installation and maintenance.

[0019] 4. When there are many fallen leaves in the area where the vehicle is traveling, the present invention can rotate the filter screen to position it on the left side of the collection chamber to intercept the floating fallen leaves, thereby achieving the goal of intercepting leaves and other impurities in the collection chamber and avoiding interference with the collection effect.

[0020] 5. When the vehicle is in motion, the airflow is guided by the air guide plate to the sliding plate. The air guide plate is kept in a relative position by the force of the second torsion spring, and the air breaker disperses the airflow, thus achieving the effect of guiding the air to the sliding plate and making it easier to move the sliding plate.

[0021] 6. After the base plate of the present invention is fixed to the roof of the vehicle, the pad on the slide bar is kept in close contact with the roof by the force of the third spring, which achieves the effect of supporting and buffering the base plate and enhancing the stability of the base plate. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0025] Figure 4 This is a three-dimensional structural diagram of the dust collection mechanism of the present invention.

[0026] Figure 5 This is a three-dimensional structural diagram of the quick-release mechanism of the present invention.

[0027] Figure 6 This is a three-dimensional structural diagram of the filtration mechanism of the present invention.

[0028] Figure 7 This is a three-dimensional structural diagram of the air-breaking mechanism of the present invention.

[0029] Figure 8 This is a three-dimensional structural diagram of the support mechanism of the present invention.

[0030] In the diagram: 1. Base plate; 11. Support rod; 12. Monitoring probe; 2. Adjustment mechanism; 21. Protective cover; 22. Sliding frame; 23. First guide frame; 24. First spring; 25. Second guide frame; 26. Connecting rod; 27. Third guide frame; 28. Sliding plate; 29. ​​Second spring; 3. Dust collection mechanism; 31. Dual-axis motor; 32. Lead screw; 33. Fourth guide frame; 34. Connecting piece; 35. Outer shell; 36. Collection bin; 4. 41. Quick-release mechanism; 42. Mounting plate; 43. Guide rail; 44. Slider; 45. First fixed seat; 46. Limiting frame; 57. First torsion spring; 58. Filtering mechanism; 51. Second fixed seat; 52. Filter screen; 53. Fifth guide frame; 54. Limiting component; 69. Air-breaking mechanism; 61. Third fixed seat; 62. Air guide plate; 63. Second torsion spring; 64. Air-breaking frame; 70. Support mechanism; 71. Slide rod; 72. Pad; 73. Third spring. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] A vehicle-mounted ambient air and exhaust gas monitoring device, such as Figures 1-8 As shown, it includes a base plate 1, a support rod 11, a monitoring probe 12 and an adjustment mechanism 2. The support rod 11 is connected to the upper left side of the base plate 1, and the monitoring probe 12 is connected to the upper side of the support rod 11. The adjustment mechanism 2 is provided on the base plate 1.

[0033] like Figure 1 and Figure 3 As shown, the adjustment mechanism 2 includes a protective cover 21, a sliding frame 22, a first guide frame 23, a first spring 24, a second guide frame 25, a connecting rod 26, a third guide frame 27, a sliding plate 28, and a second spring 29. The protective cover 21 is connected to the upper left side of the base plate 1. The support rod 11 is located inside the protective cover 21. Two sliding frames 22 are slidably connected to the upper left side of the protective cover 21. The first guide frame 23 is connected to the upper left side of the protective cover 21 and is located above the sliding frames 22. The upper parts of the sliding frames 22 are all slidably connected to the first guide frames 23. A first spring 24 is connected to the first guide frame 23. Two second guide frames 25 are connected to the upper right side of the base plate 1. The upper part of each second guide frame 25 is rotatably and slidably connected to a connecting rod 26. Each sliding frame 22 is rotatably connected to the adjacent connecting rod 26. Three third guide frames 27 are connected to the upper right side of the base plate 1. The third guide frames 27 are located between the second guide frames 25. A sliding plate 28 is slidably connected between the third guide frames 27. Each connecting rod 26 is rotatably connected to the sliding plate 28. A second spring 29 is connected between the front and rear third guide frames 27 and the sliding plate 28.

[0034] When using this invention, the base plate 1 is first fixed to the top of the vehicle, and the vehicle moves the base plate 1, allowing the monitoring probe 12 on the support rod 11 to monitor the air quality and pollution emissions in the area where the vehicle is traveling. When the vehicle is stationary, the sliding frames 22 are closed together, sealing the protective cover 21 to protect the monitoring probe 12. When the vehicle is traveling normally, the sliding plate 28 is affected by the wind and moves to the right along the third guide frame 27, causing the second spring 29 to be compressed and contracted. At this time, the connecting rod 26 moves to the right and rotates, causing the connecting rod 26 to move away from each other on the second guide frame 25, and causing the sliding frame 22 to move along the first guide frame 27. As the guide frames 23 move away from each other, the first spring 24 is compressed and contracts, causing the protective cover 21 to open for air intake. This allows the monitoring probe 12 to monitor the air quality entering the protective cover 21. After entering the protective cover 21, the air is discharged from below. When the vehicle travels at a high speed, the sliding plate 28 continues to move to the right, causing the connecting rod 26 to continue moving to the right. This causes the connecting rod 26 to move closer together along the second guide frame 25, which in turn causes the sliding frames 22 to move closer together, reducing the amount of air entering the protective cover 21. This allows the airflow at the monitoring probe 12 to be adjusted according to the vehicle speed, thereby improving the accuracy and reliability of the monitoring results.

[0035] like Figure 1 and Figure 4 As shown, the dust collection mechanism 3 includes a dual-axis motor 31, a lead screw 32, a fourth guide frame 33, a connector 34, a housing 35, and a collection bin 36. The dual-axis motor 31 is connected to the right side of the middle part of the protective cover 21. The output shafts of the dual-axis motor 31 are all connected to lead screws 32, and the threads on the lead screws 32 are in opposite directions. The fourth guide frame 33 is connected to the right side of the lower part of the protective cover 21. The lead screws 32 are all threadedly connected to connectors 34. The front and rear parts of the fourth guide frame 33 are also slidably connected to connectors 34. The housing 35 is connected between two adjacent connectors 34. The collection bins 36 are snapped onto the housings 35. The collection bins 36 are all equipped with handles for easy gripping.

[0036] Using the dust collection mechanism 3 of this device, dust and other suspended particles in the air can be collected. When the vehicle is in motion, the dual-shaft motor 31 is started, which drives the lead screw 32 to rotate, so that the connecting piece 34 and the outer shell 35 move away from each other along the fourth guide frame 33, reducing the influence of airflow at the protective cover 21, so that the collection chamber 36 collects dust and other suspended particles in the air, thereby playing the role of collecting dust and other suspended particles in the air and improving the reliability of air monitoring.

[0037] like Figure 1 and Figure 5As shown, it also includes a quick-release mechanism 4, which includes a mounting plate 41, a guide rail 42, a slider 43, a first fixed seat 44, a limiting frame 45, and a first torsion spring 46. The slider 43 is connected to the lower side of the base plate 1, and the guide rail 42 is slidably and detachably connected to the slider 43. The mounting plate 41 is connected to the lower side of the guide rail 42. The first fixed seat 44 is connected to the left and right sides of the mounting plate 41. The first fixed seat 44 is rotatably connected to two front and rear limiting frames 45. The first torsion spring 46 is connected between the limiting frame 45 and the first fixed seat 44.

[0038] Using the quick-release mechanism 4 of this device, it is possible to quickly and conveniently install and remove the base plate 1 on the vehicle. When installing the base plate 1, the mounting plate 41 is fixed to the top of the vehicle, and then the slider 43 is inserted into the guide rail 42. The guide rail 42 limits the right side of the slider 43, so that the slider 43 can only slide to the left. At this time, the force of the first torsion spring 46 causes the limiting bracket 45 on the first fixing seat 44 to be in close contact with the base plate 1, so that the base plate 1 is fixed on the mounting plate 41. This achieves the effect of quick and convenient installation and removal on the vehicle, improving the efficiency of installation and maintenance.

[0039] like Figure 1 and Figure 6 As shown, it also includes a filter mechanism 5, which includes a second fixed seat 51, a filter screen 52, a fifth guide frame 53, and a limiting member 54. The second fixed seat 51 is connected to both the front and rear sides of the lower part of the protective cover 21. The filter screen 52 is connected to the second fixed seat 51 by a damped rotation. The fifth guide frame 53 is connected to the upper left side of the base plate 1. The fifth guide frame 53 is located on the left side of the protective cover 21. The limiting member 54 is connected to the fifth guide frame 53 by a damped sliding connection.

[0040] Using the filter mechanism 5 of this device, impurities such as leaves can be intercepted. When there are many fallen leaves in the area where the vehicle is traveling, the filter screen 52 can be rotated to position it on the left side of the collection chamber 36 to intercept the floating leaves. When it is not needed, the filter screen 52 can be rotated to a horizontal position, and then the limiting member 54 can be slid to the right to make the limiting member 54 contact the filter screen 52 and limit the filter screen 52. This achieves the function of intercepting impurities such as leaves in the collection chamber 36 and preventing interference with the collection in the collection chamber 36.

[0041] like Figure 1 and Figure 7 As shown, it also includes a wind-breaking mechanism 6, which includes a third fixed base 61, a wind guide plate 62, a second torsion spring 63, and a wind-breaking frame 64. The third fixed base 61 is connected to the upper left side of the protective cover 21. The wind guide plate 62 is rotatably connected to the third fixed base 61. The wind guide plate 62 is arc-shaped to facilitate airflow. Two second torsion springs 63 are connected between the wind guide plate 62 and the third fixed base 61. The wind-breaking frame 64 is connected to the left side of the wind guide plate 62.

[0042] Using the air-breaking mechanism 6 of this device, the air can be guided. When the vehicle is moving, the airflow is guided by the air guide plate 62 to the sliding plate 28. The air guide plate 62 is kept in a relative position by the force of the second torsion spring 63, and the air-breaking frame 64 disperses the airflow, thereby guiding the air to the sliding plate 28 and making it easier to move the sliding plate 28.

[0043] like Figure 1 and Figure 8 As shown, it also includes a support mechanism 7, which includes a slide rod 71, a pad 72 and a third spring 73. The left and right sides of the base plate 1 are connected to two front and rear slide rods 71 ​​by a damping sliding mechanism. The lower side of each slide rod 71 is connected to a pad 72. The pad 72 is made of rubber to avoid wear on the vehicle body. The pad 72 is connected to the base plate 1 by a third spring 73.

[0044] Using the support mechanism 7 of this device can enhance the stability of the base plate 1. After the base plate 1 is fixed to the roof, the pad 72 on the slide bar 71 is always in close contact with the roof by the force of the third spring 73, thereby providing support and cushioning for the base plate 1 and enhancing its stability.

[0045] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A vehicle-mounted ambient air and exhaust gas monitoring device, characterized in that, It includes a base plate (1), a support rod (11), a monitoring probe (12) and an adjustment mechanism (2). The support rod (11) is connected to the upper left side of the base plate (1), and the monitoring probe (12) is connected to the upper side of the support rod (11). The base plate (1) is equipped with an adjustment mechanism (2) that can adjust the air flow in the monitoring area. The adjustment mechanism (2) includes a protective cover (21), a sliding frame (22), a first guide frame (23), a first spring (24), a second guide frame (25), a connecting rod (26), a third guide frame (27), a sliding plate (28), and a second spring (29). The protective cover (21) is connected to the upper left side of the base plate (1). The support rod (11) is located inside the protective cover (21). The upper left side of the protective cover (21) is slidably connected to two sliding frames (22). The upper left side of the protective cover (21) is connected to the first guide frame (23). The first guide frame (23) is located above the sliding frame (22). The upper part of the sliding frame (22) is slidably connected to the first guide frame (23). The sliding frame (22) is connected to the first guide frame (23) with a first spring (24). The upper right side of the base plate (1) is connected to two second guide frames (25). The upper part of the second guide frame (25) is rotatably and slidably connected to a connecting rod (26). 26), the sliding frame (22) is rotatably connected to the adjacent connecting rod (26). Multiple third guide frames (27) are connected to the upper right side of the base plate (1). The third guide frames (27) are located between the second guide frames (25). The sliding plate (28) is slidably connected between the third guide frames (27). The connecting rod (26) is rotatably connected to the sliding plate (28). The third guide frames (27) at the front and rear are connected to the sliding plate (28) with a second spring (29). When the vehicle is driving normally, the sliding plate (28) is affected by the wind and moves to the right along the third guide frame (27). The second spring (29) is squeezed and contracted. At this time, the connecting rod (26) moves to the right and rotates, so that the connecting rod (26) moves away from each other on the second guide frame (25). This causes the sliding frame (22) to move away from each other along the first guide frame (23). The first spring (24) is squeezed and contracted, so that the protective cover (21) opens to allow air intake. The dust collection mechanism (3) includes a dual-axis motor (31), a lead screw (32), a fourth guide frame (33), a connector (34), a housing (35), and a collection bin (36). The dual-axis motor (31) is connected to the right side of the middle part of the protective cover (21). The lead screw (32) is connected to the output shaft of the dual-axis motor (31). The threads on the lead screw (32) are opposite in direction. The fourth guide frame (33) is connected to the right side of the lower part of the protective cover (21). The connector (34) is threadedly connected to the lead screw (32). The fourth guide frame (33) is also slidably connected to the front and rear parts of the connecting parts (34). The two adjacent connecting parts (34) are connected to the outer shell (35). The outer shell (35) is snapped with the collection chamber (36). The dual-axis motor (31) is started, which drives the lead screw (32) to rotate, so that the connecting parts (34) and the outer shell (35) move away from each other along the fourth guide frame (33), reducing the influence of airflow at the protective cover (21), so that the collection chamber (36) collects dust in the air. It also includes a quick-release mechanism (4), which includes a mounting plate (41), a guide rail (42), a slider (43), a first fixed seat (44), a limit frame (45), and a first torsion spring (46). The bottom plate (1) is connected to the slider (43), and the slider (43) is slidably and detachably connected to the guide rail (42). The bottom of the guide rail (42) is connected to the mounting plate (41), and the mounting plate (41) is connected to the left and right sides of the mounting plate (41). The first fixed seat (44) is connected to the first fixed seat (44) in a rotatable manner. Two limit frames (46) are rotatably connected to the first fixed seat (44). 5) Each of the limiting brackets (45) is connected to the first fixed seat (44) with a first torsion spring (46). When installing the base plate (1), the mounting plate (41) is fixed on the top of the vehicle, and then the slider (43) is inserted into the guide rail (42). The guide rail (42) limits the right side of the slider (43), so that the slider (43) can only slide to the left. At this time, the force of the first torsion spring (46) makes the limiting bracket (45) on the first fixed seat (44) stick to the base plate (1), so that the base plate (1) is fixed on the mounting plate (41).

2. The vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 1, characterized in that, Each collection chamber (36) is equipped with a handle.

3. The vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 1, characterized in that, It also includes a filtration mechanism (5), which includes a second fixed seat (51), a filter screen (52), a fifth guide frame (53), and a limiting member (54). The second fixed seat (51) is connected to both the front and rear sides of the lower part of the protective cover (21). The filter screen (52) is connected to the second fixed seat (51) by a damping rotation. The fifth guide frame (53) is connected to the upper left side of the bottom plate (1). The fifth guide frame (53) is located on the left side of the protective cover (21). The limiting member (54) is connected to the fifth guide frame (53) by a damping sliding. Rotate the filter screen (52) so that the filter screen (52) is located on the left side of the collection chamber (36) to intercept the floating fallen leaves.

4. A vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 3, characterized in that, It also includes a wind-breaking mechanism (6), which includes a third fixed seat (61), a wind guide plate (62), a second torsion spring (63), and a wind-breaking frame (64). The third fixed seat (61) is connected to the upper left side of the protective cover (21). The wind guide plate (62) is rotatably connected to the third fixed seat (61). Multiple second torsion springs (63) are connected between the wind guide plate (62) and the third fixed seat (61). The wind-breaking frame (64) is connected to the left side of the wind guide plate (62). When the vehicle is moving, the airflow is guided by the wind guide plate (62) to the sliding plate (28). The wind guide plate (62) is kept in a relative position by the force of the second torsion spring (63), and the wind-breaking frame (64) disperses the airflow.

5. A vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 4, characterized in that, The air guide plate (62) is arc-shaped.

6. A vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 4, characterized in that, It also includes a support mechanism (7), which includes a slide rod (71), a pad (72) and a third spring (73). The left and right sides of the base plate (1) are connected to two slide rods (71) in a damping sliding manner. The lower side of each slide rod (71) is connected to a pad (72). The pad (72) is connected to the base plate (1) by a third spring (73). After the base plate (1) is fixed to the roof, the pad (72) on the slide rod (71) is always in close contact with the roof by the force of the third spring (73).

7. A vehicle-mounted ambient air and exhaust gas monitoring device as claimed in claim 6, characterized in that, The pad (72) is made of rubber.

Images