Automobile exhaust detection device

Abstract

The utility model discloses a kind of automobile exhaust detection devices, including tail gas analyzer, the one end of tail gas analyzer is connected with conveying pipe, the other end is connected with discharge pipe, the inside of conveying pipe is slidably installed with telescopic pipe, the end of telescopic pipe is installed with detection probe, sealing clamping mechanism is equipped between detection probe and telescopic pipe, and lifting transmission mechanism is installed below tail gas analyzer.The utility model has following effect: when detecting exhaust, detection probe is inserted into automobile exhaust pipe, through sealing clamping mechanism, the automobile exhaust pipe of different diameter size can be firmly clamped, and the gap between exhaust pipe and detection probe is tightly sealed, prevent outside air from mixing when exhaust detection, significantly improve the sealing and reliability of exhaust sampling process, improve overall detection precision.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, and more specifically, to an automobile exhaust gas detection device. Background Technology

[0002] Currently, in the process of testing motor vehicle exhaust emissions, exhaust gas analyzers are commonly used to collect and analyze the components of the exhaust gases emitted by vehicles in order to determine whether their emissions meet environmental protection standards.

[0003] Existing exhaust gas analyzers typically include a sampling probe or collection tube connected to the vehicle's exhaust pipe, through which exhaust gas is introduced into the analysis module for testing. However, in practical applications, it has been found that the exhaust pipe outlet diameter varies significantly between different brands and models of vehicles. Current exhaust gas detection devices often have fixed-size sampling ports, making it difficult to accommodate various exhaust pipe diameters. When a proper seal cannot be achieved between the exhaust gas collection tube and the vehicle's exhaust pipe, external air can seep into the exhaust gas flow path during sampling, causing a dilution effect and severely impacting the accuracy of detecting various pollutant concentrations in vehicle exhaust. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes an automobile exhaust gas detection device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A vehicle exhaust gas detection device includes an exhaust gas analyzer, one end of which is connected to a delivery pipe and the other end to an exhaust pipe. A telescopic tube is slidably installed inside the delivery pipe, and a detection probe is installed at the end of the telescopic tube. A sealing clamping mechanism is provided between the detection probe and the telescopic tube, and a lifting transmission mechanism is installed below the exhaust gas analyzer.

[0007] Furthermore, in order to achieve tight clamping of exhaust pipes of different diameters, the sealing clamping mechanism includes a positioning plate connected to the end of the telescopic tube, support plates connected to each side surface of the positioning plate, a clamping screw threaded to the surface of the support plate, and a pressing plate connected to one end of the clamping screw.

[0008] Furthermore, in order to adjust the height of the exhaust gas analyzer when testing exhaust pipes at different heights, the lifting transmission mechanism includes a scissor telescopic frame installed at the bottom of the exhaust gas analyzer. A support platform is rotatably connected to one side of the bottom of the scissor telescopic frame, and a transmission plate is rotatably connected to the other side. A transmission motor is installed on one side of the surface of the support platform, and a transmission screw is connected to the output end of the transmission motor. The transmission screw is threadedly connected to the transmission plate.

[0009] Furthermore, to improve the sealing performance when the positioning plate comes into contact with the end of the vehicle's exhaust pipe, a rubber sealing gasket is installed on one side of the positioning plate.

[0010] Furthermore, in order to facilitate the adjustment of the clamping screw and increase the friction when the extrusion plate contacts the surface of the automobile exhaust pipe, a screwing block is connected to one end of the clamping screw, and a rubber anti-slip pad is installed on one side of the extrusion plate.

[0011] Furthermore, to prevent the telescopic tube from sliding off one end of the conveying pipe, a limit ring is connected to one end of the telescopic tube inside the conveying pipe.

[0012] Furthermore, in order to enable the support platform to move and adjust, casters are rotatably installed on both sides of the bottom of the support platform.

[0013] Furthermore, in order to allow for free adjustment of the angle of the delivery pipe, an adjustment hose is connected between the delivery pipe and the exhaust gas analyzer.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. During exhaust gas testing, the detection probe is inserted into the vehicle's exhaust pipe. Through a sealing clamping mechanism, exhaust pipes of different diameters can be securely clamped, and the positioning plate can be tightly attached to the opening side of the exhaust pipe. This achieves a tight seal between the exhaust pipe and the detection probe, preventing outside air from mixing in during exhaust gas testing. This significantly improves the sealing and reliability of the exhaust gas sampling process. Since outside air is difficult to enter the airflow channel during sampling, dilution of exhaust gas components is avoided, thus improving the overall detection accuracy.

[0016] 2. Through the lifting transmission mechanism, the support height of the exhaust gas analyzer can be freely adjusted when testing exhaust gas from vehicles of different heights. This facilitates the installation of the sealing clamping mechanism and provides stable support for the exhaust gas analyzer, eliminating the need for manual lifting devices and effectively saving manpower. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the surface structure of an automobile exhaust gas detection device according to an embodiment of the present utility model;

[0019] Figure 2This is a side view of an automobile exhaust emission detection device according to an embodiment of the present utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a rear view of an automobile exhaust emission detection device according to an embodiment of the present utility model;

[0022] Figure 5 This is an internal cross-sectional view of the delivery pipe in an automobile exhaust gas detection device according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Exhaust gas analyzer; 2. Delivery pipe; 3. Emission pipe; 4. Telescopic pipe; 5. Detection probe; 6. Sealing clamping mechanism; 601. Positioning plate; 602. Support plate; 603. Clamping screw; 604. Extrusion plate; 7. Lifting transmission mechanism; 701. Scissor lift telescopic frame; 702. Support platform; 703. Transmission plate; 704. Transmission motor; 705. Transmission screw; 8. Rubber sealing gasket; 9. Tightening block; 10. Rubber anti-slip pad; 11. Limit ring; 12. Casters; 13. Adjusting hose. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] According to an embodiment of the present invention, an automobile exhaust gas detection device is provided.

[0027] like Figures 1-5As shown, an embodiment of the present invention provides a vehicle exhaust gas detection device, comprising an exhaust gas analyzer 1 capable of detecting and analyzing key pollutants and gas concentrations in vehicle exhaust gas; one end of the exhaust gas analyzer 1 is connected to a delivery pipe 2, and the other end is connected to an emission pipe 3, for delivering exhaust gas and exhaust gas after emission detection into the exhaust gas analyzer 1; a telescopic pipe 4 is slidably installed inside the delivery pipe 2 for extending one end of the delivery pipe 2; a detection probe 5 is installed at the end of the telescopic pipe 4, the detection probe 5 being a stainless steel pipe for inserting into the vehicle exhaust pipe to collect the exhaust gas emitted by the vehicle; a sealing clamping mechanism 6 is provided between the detection probe 5 and the telescopic pipe 4 for securely clamping vehicle exhaust pipes of different diameters and for tightly sealing the gap between the exhaust pipe and the detection probe 5 to prevent outside air from mixing in during exhaust gas detection; a lifting transmission mechanism 7 is installed below the exhaust gas analyzer 1, which can adjust the support height of the exhaust gas analyzer 1 when facing vehicles and exhaust pipes of different heights.

[0028] like Figures 1-5As shown, the sealing clamping mechanism 6 includes a telescopic tube 4 with a positioning plate 601 connected to its end. Support plates 602 are connected to each side surface of the positioning plate 601. There are two pairs of support plates 602, and each support plate 602 has a clamping screw 603 threadedly connected to its surface. One end of the clamping screw 603 is connected to a pressing plate 604. During exhaust gas testing, the detection probe 5 is inserted into the vehicle's exhaust pipe, and the positioning plate 601 is tightly pressed against the opening at one end of the exhaust pipe to seal the gap between the vehicle's exhaust pipe and the detection probe 5. Then, by turning each clamping screw 603, the clamping plate 604 is pressed against the vehicle's exhaust pipe. The extrusion plate 604 stably clamps the vehicle exhaust pipe, fixing and sealing the detection probe 5 at the end of the exhaust pipe, effectively preventing outside air from entering the pipe during testing. The lifting transmission mechanism 7 includes a scissor lift telescopic frame 701 mounted at the bottom of the exhaust gas analyzer 1. A support platform 702 is rotatably connected to one side of the bottom of the scissor lift telescopic frame 701, and a transmission plate 703 is rotatably connected to the other side. A transmission motor 704 is mounted on one side of the surface of the support platform 702. A transmission screw 705 is connected to the output end of the transmission motor 704. The transmission screw 705 is threadedly connected to the transmission plate 703. When the vehicle and exhaust pipe are in contact, the transmission motor 704 drives the transmission screw 705 to rotate, causing the transmission screw 705 to drive the transmission plate 703 to slide on the support platform 702. This, in turn, causes the transmission plate 703 to drive the scissor lift telescopic frame 701 to extend and retract, allowing for free adjustment of the height of the exhaust gas analyzer 1 at the top of the scissor lift telescopic frame 701. A rubber sealing gasket 8 is installed on one side of the positioning plate 601 to improve the sealing performance when the positioning plate 601 contacts the end of the vehicle's exhaust pipe. A turning block 9 is connected to one end of the clamping screw 603 to facilitate turning and rotating the clamping screw 603. A rubber anti-slip pad 10 is installed on one side of the pressure plate 604 to increase the friction when the pressure plate 604 is pressed against the surface of the automobile exhaust pipe; a limit ring 11 is connected to one end of the telescopic tube 4 inside the conveying tube 2 to prevent the telescopic tube 4 from sliding off from one end of the conveying tube 2; universal wheels 12 are rotatably installed on both sides of the bottom of the support platform 702, which allows the entire device to move freely; an adjusting hose 13 is connected between the conveying tube 2 and the exhaust gas analyzer 1, which allows the conveying tube 2 and the detection probe 5 to be rotated to different angles for exhaust gas detection.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0030] In actual use, the device is first moved to the rear of the vehicle to be tested by the casters 12 installed on both sides of the bottom of the support platform 702. Based on the installation height of the vehicle's exhaust pipe, the drive motor 704 in the lifting transmission mechanism 7 is activated, driving the scissor lift 701 to extend and retract, allowing for free adjustment of the overall height of the exhaust gas analyzer 1. Once the device height is adjusted, the detection probe 5 is inserted into the vehicle's exhaust pipe, and the positioning plate 601 is placed tightly against the exhaust pipe outlet face to prevent outside air from entering during exhaust gas sampling. The operator manually turns the clamping screws 603 set on the support plates 602 around the positioning plate 601. Since the clamping screws 603 are threadedly connected to the support plates 602, their rotation causes the extrusion plates 604 connected to their ends to move towards the exhaust pipe. Multiple extrusion plates 604 move synchronously towards the center from different directions, applying uniform pressure to the outer wall of the vehicle's exhaust pipe for stable clamping. After installation, the vehicle is started at idle or on a dynamometer, and the exhaust gas analyzer 1 is used to detect and analyze the key pollutants and gas concentrations in the vehicle's exhaust gas.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle exhaust emission detection device, characterized in that, Includes an exhaust gas analyzer (1), one end of which is connected to a delivery pipe (2) and the other end is connected to an exhaust pipe (3). A telescopic pipe (4) is slidably installed inside the delivery pipe (2). A detection probe (5) is installed at the end of the telescopic pipe (4). A sealing clamping mechanism (6) is provided between the detection probe (5) and the telescopic pipe (4). A lifting transmission mechanism (7) is installed below the exhaust gas analyzer (1).

2. The vehicle exhaust emission detection device according to claim 1, characterized in that, The sealing clamping mechanism (6) includes a telescopic tube (4) with a positioning plate (601) connected to the end, a support plate (602) connected to each side surface of the positioning plate (601), a clamping screw (603) threadedly connected to the surface of the support plate (602), and a pressing plate (604) connected to one end of the clamping screw (603).

3. The vehicle exhaust emission detection device according to claim 1, characterized in that, The lifting transmission mechanism (7) includes a scissor lift telescopic frame (701) installed at the bottom of the exhaust gas analyzer (1). A support platform (702) is rotatably connected to one side of the bottom of the scissor lift telescopic frame (701), and a transmission plate (703) is rotatably connected to the other side. A transmission motor (704) is installed on one side of the surface of the support platform (702). A transmission screw (705) is connected to the output end of the transmission motor (704). The transmission screw (705) is threadedly connected to the transmission plate (703).

4. The vehicle exhaust emission detection device according to claim 2, characterized in that, A rubber sealing gasket (8) is installed on one side of the positioning plate (601).

5. The vehicle exhaust emission detection device according to claim 4, characterized in that, One end of the clamping screw (603) is connected to a screwing block (9), and a rubber anti-slip pad (10) is installed on one side of the extrusion plate (604).

6. The vehicle exhaust emission detection device according to claim 1, characterized in that, The telescopic tube (4) is connected to a limit ring (11) at one end inside the conveying tube (2).

7. The vehicle exhaust emission detection device according to claim 3, characterized in that, The bottom sides of the support platform (702) are equipped with casters (12) that rotate.

8. The vehicle exhaust emission detection device according to claim 1, characterized in that, A regulating hose (13) is connected between the delivery pipe (2) and the exhaust gas analyzer (1).

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