Automobile exhaust emission detection device

Abstract

The utility model relates to the technical field of tail gas detection, in particular to an automobile tail gas emission detection device which comprises a detection pipeline used for being inserted into an automobile exhaust pipeline, one end of the detection pipeline is provided with a detection probe, and the other end of the detection pipeline is connected with a detector used for detecting tail gas through a connecting pipe. The detection pipeline is provided with a hand-held piece, the hand-held piece is provided with a telescopic assembly, the telescopic assembly comprises a plurality of protection pipes which are in mutual friction sliding sleeve arrangement, the detection pipeline is inserted into an automobile exhaust pipeline, the tail gas emitted by an automobile is detected through the detector, after the detection is finished, the plurality of protection pipes are pulled, and the tail gas can be detected through the telescopic assembly. The telescopic assembly extends to wrap the detection pipeline drawn out of the automobile exhaust pipeline, so that the detection pipeline is isolated in the multiple protection pipes, heat insulation is conducted on the detection pipeline, the detection pipeline is prevented from being directly exposed in the external environment, and the risk of scalding caused by mistakenly touching the surface of the detection pipeline is reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, and in particular to a vehicle exhaust gas emission detection device. Background Technology

[0002] Vehicle exhaust emission testing devices are used to detect whether the content of various pollutants in vehicle exhaust exceeds the standard. They can accurately detect the concentration of various pollutants in vehicle exhaust, which can not only help to judge the combustion status of the vehicle engine and the exhaust purification effect, but also analyze possible engine problems based on the abnormality of exhaust composition and concentration, so as to carry out targeted maintenance.

[0003] Currently, some vehicle exhaust emission testing devices involve inserting a testing pipe into the exhaust pipe. A probe at one end of the testing pipe allows exhaust gas to flow into the testing pipe and be transmitted to the testing device to detect the vehicle's exhaust emissions. However, after the test is completed, the testing pipe needs to be pulled out of the exhaust pipe. The pulled-out exhaust pipe is very hot and directly exposed to the external environment, which can easily cause burns if accidentally touched.

[0004] Therefore, based on the above situation, it is necessary to design a vehicle exhaust emission detection device to solve the above problems. Utility Model Content

[0005] This invention provides a vehicle exhaust emission testing device to solve the problem in the prior art where, after the test is completed, the testing pipe needs to be pulled out of the exhaust pipe, but the extracted exhaust pipe is hot and directly exposed to the external environment, which can easily cause burns due to accidental contact.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A vehicle exhaust emission testing device includes a testing pipe for insertion into a vehicle exhaust pipe. One end of the testing pipe is equipped with a testing probe, and the other end of the testing pipe is connected to a detector for detecting exhaust gases via a connecting pipe. The testing pipe is equipped with a handheld component, and the handheld component is equipped with a telescopic component. The telescopic component includes multiple protective tubes that slide and rub against each other. When the multiple protective tubes extend to wrap around the testing pipe that has been pulled out from the vehicle exhaust pipe, they are used to insulate the testing pipe from heat.

[0008] Preferably, the innermost protective tube is provided with a support rod, and the support rod is provided with an annular guide for dispersing vehicle exhaust gas, the annular guide gradually increasing in inner diameter from top to bottom.

[0009] Preferably, an annular protective part is detachably connected to the annular guide member, and the annular protective part is located between the annular guide member and the detection pipe.

[0010] Preferably, the top of the innermost protective tube is provided with an operating edge, and the support rod is connected to the operating edge.

[0011] Preferably, the handheld component has an internal receiving groove, and the outermost protective tube is in frictional sliding connection with the inner wall of the receiving groove.

[0012] Preferably, the outer edge of the operation is connected by a fixed rod to an elastic clamp for clamping the vehicle exhaust pipe, and the elastic clamp is located above the annular guide.

[0013] The beneficial effects of this utility model are as follows: by inserting the detection pipe into the exhaust pipe of a car and using a detector to detect the exhaust gas emitted by the car, after the detection is completed, multiple protective tubes are pulled to extend the telescopic component to wrap the detection pipe that has been pulled out from the exhaust pipe of the car, thus isolating the detection pipe inside the multiple protective tubes, insulating the detection pipe, preventing the detection pipe from being directly exposed to the external environment, and reducing the risk of burns caused by accidental contact with the surface of the detection pipe. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0016] Figure 2 A schematic diagram of the telescopic component provided by this utility model in its extended state;

[0017] Figure 3 Provided by this utility model Figure 2 A schematic diagram of the cross-sectional structure;

[0018] Figure 4 This is a partial structural schematic diagram of the present invention.

[0019] In the diagram, 1. Detection pipe; 2. Detection probe; 3. Connecting pipe; 4. Detector; 5. Handheld device; 6. Protective pipe; 7. Support rod; 8. Annular guide; 9. Annular protective part; 10. Operating edge; 11. Receiving groove; 12. Fixing rod; 13. Elastic fixing clamp. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] Reference Figures 1-4 As shown, a vehicle exhaust emission testing device includes a testing pipe 1 for insertion into the vehicle's exhaust pipe. One end of the testing pipe 1 is equipped with a testing probe 2, and the other end of the testing pipe 1 is connected to a detector 4 for detecting exhaust gases via a connecting pipe 3. In use, the end of the testing pipe 1 with the testing probe 2 is first inserted into the vehicle's exhaust pipe, and then gradually inserted to a certain depth as needed. At this time, vehicle exhaust gases enter the testing pipe 1 and the connecting pipe 3, and are transmitted to the detector 4. The detector 4 measures the concentration of various substances in the vehicle exhaust gases. After the vehicle exhaust gas test is completed, the surface temperature of the testing pipe 1 is high, and directly removing it from the vehicle's exhaust pipe may cause accidental contact by the operator. Therefore, for ease of operation, during the test... A handheld device 5 is provided on the pipe 1 to facilitate the operation of the testing pipe 1 by the testing personnel. At the same time, in order to insulate the testing pipe 1, a telescopic component is also provided on the handheld device 5. The telescopic component includes multiple protective tubes 6 that are rubbed and slid together. The protective tubes 6 can be made of heat-insulating materials such as ceramic fiber. When the vehicle exhaust gas test is performed, the multiple protective tubes 6 retract to their shortest length and are fixed by the friction between them. After the vehicle exhaust gas test is completed, the multiple protective tubes 6 extend until they wrap around the testing pipe 1 that has been pulled out of the vehicle exhaust pipe, and are also fixed by the friction between them. At this time, the testing pipe 1 is isolated in the multiple protective tubes 6, preventing the testing pipe 1 from being directly exposed to the external environment and reducing the risk of burns caused by accidental contact with the surface of the testing pipe 1.

[0022] Reference Figures 1-4 As shown, furthermore, in order to disperse the exhaust gas emitted from the vehicle exhaust pipe, a support rod 7 is provided on the innermost protective pipe 6. The support rod 7 is provided with an annular guide 8 for dispersing the exhaust gas. The inner diameter of the annular guide 8 gradually increases from top to bottom. When the exhaust gas is discharged, some of the exhaust gas will be dispersed along the surface of the annular guide 8, avoiding the exhaust gas from directly acting on the handheld part 5 and the protective pipe 6 after discharge, thus increasing the surface temperature of the handheld part 5 and the protective pipe 6, and improving the convenience of operation.

[0023] To reduce contact friction between the detection pipe 1 and the annular guide 8, an annular protective part 9 is detachably connected to the annular guide 8 via threads, snap-fit, or other connection methods. The annular protective part 9 is located between the annular guide 8 and the detection pipe 1. When the detection pipe 1 is exposed or insulated, the annular guide 8 will move on the surface of the detection pipe 1, and the detection pipe 1 will come into contact with the annular protective part 9. This avoids direct contact between the detection pipe 1 and the annular guide 9, reducing wear between them. When the annular protective part 9 is worn, it can be disassembled and replaced, extending the service life of the annular guide 8. In addition, the end of the annular protective part 9 can be an outward-facing structure with a smooth surface, which can also reduce the scraping of the end of the annular protective part 9 against the detection pipe 1 and ensure the smooth movement of the annular guide 8.

[0024] Reference Figures 1-4 As shown, furthermore, in order to facilitate the removal of the protective tube 6, an operating outer edge 10 is provided at the top of the innermost protective tube 6. The operating outer edge 10 provides a convenient gripping part for the testing personnel. When it is necessary to remove the protective tube 6, the testing personnel can directly grasp the operating outer edge 10 and apply pulling force more easily. Compared with directly grasping the smooth surface of the protective tube 6, the operating outer edge 10 increases the contact area between the hand and the protective tube 6, making the force application more stable and effective, reducing the difficulty of operation, and improving work efficiency. At the same time, the support rod 7 is connected to the operating outer edge 10, which also provides a reliable support point for the support rod 7 and increases the stability of the annular guide 8.

[0025] To ensure the stability of the detection pipe 1 when detecting vehicle exhaust gas, the outer edge 10 is connected to an elastic fixing clip 13 via a fixing rod 12 for fixing to the vehicle exhaust pipe. The elastic fixing clip 13 may include a fixed clamping plate and a metal spring connected to one end of the clamping plate. One end of the metal spring is turned outward and has a certain gap with the clamping plate, which facilitates the inner wall of the vehicle exhaust pipe to enter between the clamping plate and the metal spring. The metal spring will fit tightly against the vehicle exhaust pipe under the action of elasticity to fix it. The elastic fixing clip 13 is located above the annular guide 8, which can prevent the obstruction caused by the annular guide 8 when fixing to the vehicle exhaust pipe. This ensures that the elastic fixing clip 13 can play a fixing role independently and stably, firmly fixing the detection pipe 1 inside the vehicle exhaust pipe, reducing the shaking and displacement of the detection pipe 1 caused by vehicle vibration, exhaust gas impact and other factors, thereby ensuring the accuracy and stability of the detection probe 2 position and improving the reliability of the exhaust gas detection results.

[0026] Reference Figure 3As shown, furthermore, in order to accommodate the telescopic components, the handheld part 5 has an internal receiving groove 11. The outermost protective tube 6 is slidably connected to the inner wall of the receiving groove 11, and the protective tube 6 is stored in the receiving groove 11 of the handheld part 5, making the structure of the entire testing device more compact. Compared with the design of the protective tube 6 being external, this method reduces the overall space occupied by the device, making it easier to carry and store. Whether in the laboratory, maintenance workshop or outdoor testing site, the compact structure can improve the flexibility and adaptability of the device. At the same time, the receiving groove 11 provides a relatively closed protective space for the protective tube 6, which can prevent the protective tube 6 from being impacted, scratched and contaminated by the outside when not in use. Meanwhile, the inner wall of the receiving groove 11 can provide a certain degree of support and fixation for the protective tube 6, preventing the protective tube 6 from being deformed or damaged during transportation or storage.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting exhaust emission of a vehicle, comprising a detection pipe (1) for being inserted into an exhaust pipe of the vehicle, one end of the detection pipe (1) being provided with a detection probe (2), and the other end of the detection pipe (1) being connected with a detector (4) for detecting exhaust emission through a connecting pipe (3), characterized in that, The detection pipeline (1) is provided with a handheld piece (5), the handheld piece (5) is provided with a telescopic assembly, the telescopic assembly includes a plurality of mutually friction sliding sleeve protection tubes (6), when a plurality of the protection tubes (6) are stretched, the detection pipeline (1) extracted from the automobile exhaust pipeline is wrapped, and the detection pipeline (1) is heat insulated.

2. The automobile exhaust emission detection device according to claim 1, characterized in that, The innermost protection tube (6) is provided with a support rod (7), the support rod (7) is provided with an annular flow guide piece (8) for dispersing automobile exhaust, and the annular flow guide piece (8) gradually increases in diameter from top to bottom.

3. The automobile exhaust emission detection device according to claim 2, characterized in that, The annular flow guide piece (8) is detachably connected with an annular protection part (9), and the annular protection part (9) is located between the annular flow guide piece (8) and the detection pipeline (1).

4. The automobile exhaust emission detection device according to claim 2, characterized in that, The top of the innermost protection tube (6) is provided with an operating outer edge (10), and the support rod (7) is connected with the operating outer edge (10).

5. The device for detecting exhaust emission of an automobile according to claim 1, wherein The inside of the handheld piece (5) is provided with a containing groove (11), and the outermost protection tube (6) is frictionally and slidingly connected with the inner wall of the containing groove (11).

6. The device for detecting exhaust emission of an automobile according to claim 4, wherein The operating outer edge (10) is connected with an elastic fixing clamp (13) for clamping the automobile exhaust pipeline through a fixing rod (12), and the elastic fixing clamp (13) is located above the annular flow guide piece (8).

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