A novel specialized tool for collecting exhaust gas using RDE sampling tubes

Abstract

This utility model provides a novel specialized tool for collecting exhaust gases using an RDE sampling pipe, belonging to the technical field of exhaust gas collection tools. It solves the technical problems of existing technologies where significant differences in exhaust pipe structures across different vehicle models necessitate specialized tools, greatly increasing testing costs and making the operation process extremely cumbersome. The tool includes a three-way air collection pipe, a sampling pipe, an intake adjustment mechanism, a metal bellows, and several connecting components. The two intake ends of the three-way air collection pipe are connected to the intake adjustment mechanism and the metal bellows respectively via the connecting components. An intake component is mounted on the intake end of the metal bellows. Several suspension components and several support and movement components are provided on the three-way air collection pipe, the sampling pipe, and the intake adjustment mechanism. This utility model can adapt to exhaust gas collection from different vehicle models by replacing different components. It features quick installation, simple operation, good corrosion resistance, reduced testing costs, and significantly improved convenience of RDE testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of exhaust gas collection tools, and relates to a new special tool for collecting exhaust gas using an RDE sampling tube. Background Technology

[0002] With increasingly stringent automotive environmental standards, the Real-Time Emissions (RDE) test in the GB18352 II standard has become a crucial step in controlling vehicle environmental performance. It accurately reflects the pollutant emissions of vehicles during actual driving, providing key data for environmental supervision and automotive technology improvement. However, numerous problems exist with exhaust gas collection tools during the test, severely hindering the efficient implementation of RDE. Significant differences in exhaust pipe structures between different vehicle models necessitate specialized collection tools, significantly increasing testing costs and making the operation extremely cumbersome.

[0003] Therefore, we propose a new specialized tool for collecting exhaust gas using RDE sampling tubes. By replacing different components, it can be adapted to the exhaust gas collection of different vehicle models. It is quick to install, easy to operate, has good corrosion resistance, reduces testing costs, and significantly improves the convenience of RDE testing. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a novel specialized tool for collecting exhaust gases using an RDE sampling tube. The technical problem this utility model aims to solve is: how to achieve exhaust gas collection for different vehicle models by replacing different components, with quick installation, simple operation, good corrosion resistance, reduced testing costs, and significantly improved convenience of RDE testing.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A novel special tool for collecting exhaust gas using an RDE sampling tube includes a three-way gas collection pipe, a sampling pipe, an air intake adjustment mechanism, a metal corrugated pipe, and several connecting components. The three-way gas collection pipe is L-shaped, with its outlet end connected to the sampling pipe. One of the air intake ends of the three-way gas collection pipe is connected to the outlet end of the air intake adjustment mechanism via the connecting component. The air intake adjustment mechanism is located in front of the sampling pipe. The other air intake end of the three-way gas collection pipe is connected to the outlet end of the metal corrugated pipe. An air intake component is provided on the air intake end of the metal corrugated pipe, and the air intake end of the metal corrugated pipe is connected to a corresponding air intake component via the connecting component. Several suspension components and several support and movement components are provided on the three-way gas collection pipe, the sampling pipe, and the air intake adjustment mechanism.

[0007] The working principle of this utility model is as follows: When in use, the device is installed at the rear of the corresponding vehicle. The intake end of the intake component one and the intake end of the intake adjustment mechanism are connected to the vehicle's exhaust pipe. The exhaust gas enters through the intake component one and the intake adjustment mechanism and is transmitted to the three-way gas collection pipe. The three-way gas collection pipe is connected to the sampling pipe, so that the exhaust gas enters the sampling pipe. The sampling pipe detects the composition of the vehicle's exhaust gas. The metal corrugated pipe one can be bent to a certain extent, making the device more flexible in use. Several suspension components and several support and movement components play a role in assisting fixation and supporting movement.

[0008] The air intake adjustment mechanism includes a telescopic pipe, a second metal bellows pipe, a second air intake assembly, and a second connecting assembly. The air outlet of the telescopic pipe is connected to one of the air inlets of the three-way air collection pipe. The air inlet of the telescopic pipe is connected to the air outlet of the second metal bellows pipe. The air inlet of the second metal bellows pipe is connected to the air outlet of the second air intake assembly through the second connecting assembly.

[0009] With the above structure, when in use, the vehicle exhaust gas passes through the second metal bellows of the second intake assembly and the telescopic pipe in sequence and enters the three-way air collection pipe, where it is collected. The second metal bellows can be bent to a certain extent, making the device more flexible to use. The telescopic pipe can extend and retract, adjusting the distance between the first intake assembly and the second intake assembly, thus adapting to different vehicle models.

[0010] The first intake assembly includes an intake pipe, a connecting hose, and two hose clamps. One end of the connecting hose is fitted onto the intake end of the intake pipe, and the two hose clamps are fitted onto both ends of the connecting hose. The second intake assembly has the same structure as the first intake assembly. The intake pipe in the first intake assembly is connected to the first metal bellows pipe, and the intake pipe in the second intake assembly is connected to the second metal bellows pipe.

[0011] With the above structure, the connecting hose can be adapted to different models of vehicle exhaust pipes, increasing the practicality of the device and making installation simpler. Two hose clamps are used to fix the two ends of the connecting hose, making the installation more stable.

[0012] The first connecting component includes a quick-release clamp and a sealing ring. The sealing ring is disposed between the two opposite end flanges of the intake pipe and the metal bellows in the first intake component, or between the two opposite end flanges of the telescopic pipe and the tee manifold. The quick-release clamp is adapted to the two corresponding end flanges and is fitted onto the two corresponding end flanges. The second connecting component has the same structure as the first connecting component. The sealing ring in the second connecting component is disposed between the two opposite end flanges of the intake pipe and the metal bellows in the second intake component. The quick-release clamp in the second connecting component is adapted to the two corresponding end flanges and is fitted onto the two corresponding end flanges.

[0013] With the above structure, the flange is pre-fixed to the end of the pipe to be connected. The quick-release clamp and flange are used together for quick installation, simple operation, and reliable connection. The ingenious design eliminates the need for hole matching and locking, and the sealing ring can increase the sealing performance.

[0014] The suspension assembly includes a turnbuckle 1, a turnbuckle 2, and two quick-release retaining rings 1. The two quick-release retaining rings are set on the corresponding three-way gas collection pipe, sampling pipe, and telescopic pipe. The upper end of each of the two quick-release retaining rings 1 is fixed with a connecting ring. The turnbuckle 1 is located behind the turnbuckle 2. The lower ends of the turnbuckle 1 and turnbuckle 2 are respectively rotatably connected to the two connecting rings. The upper ends of the turnbuckle 1 and turnbuckle 2 are fixed with buckles. A retaining ring is fixed on the nut of the turnbuckle 1.

[0015] Using the above structure, the quick-release clasp can be quickly and easily fixed at any position on the three-way air intake pipe, sampling pipe, and telescopic pipe. Turnbuckle 1 and Turnbuckle 2 can be adjusted in length. Combined with the flexible bending of metal bellows 1 and 2, the three-way air intake pipe, sampling pipe, and telescopic pipe can be in an inclined state with the front higher than the rear, preventing water vapor in the exhaust gas from flowing back into the vehicle's exhaust pipe. The buckle at the upper end of Turnbuckle 1 is used to quickly connect to the rear of the vehicle and the suspension device. The buckle at the upper end of Turnbuckle 2 is used to connect to the fixing ring, which can enhance the strength of the device and prevent the connection of the device from bearing excessive external force. Alternatively, the buckle at the upper end of Turnbuckle 2 can be directly connected to the rear of the vehicle.

[0016] The supporting moving assembly includes a quick-release ring II, an outer circular inner square tube, a central square shaft, an eccentric locking handle, a U-shaped component, and two symmetrical rubber blocks. The quick-release ring II is fitted onto the corresponding three-way gas collection pipe, sampling pipe, and telescopic pipe. The outer circular inner square tube is fixed to the lower end of the quick-release ring II. Two symmetrical rubber blocks are fitted onto the outer circular inner square tube. The upper ends of the two U-shaped sidewalls of the U-shaped component are each provided with a circular through hole. The two ends of the outer circular inner square tube are respectively located inside the two circular through holes. The two rubber blocks are located between the two U-shaped sidewalls of the U-shaped component. The two rubber blocks are respectively located at the two ends of the outer circular inner square tube. The U-shaped component is located between the two rubber blocks. One end of the central square shaft is rotatably connected to the eccentric position of the eccentric locking handle. The other end of the central square shaft passes through one of the rubber blocks and the outer circular inner square tube and is screwed onto the other rubber block. The central square shaft is adapted to the internal square through hole of the outer circular inner square tube. A connecting rod is fixed to the lower end of the U-shaped component, and a caster wheel is fixed to the lower end of the connecting rod.

[0017] Using the above structure, the quick-release clasp can be quickly and easily fixed at any position on the three-way gas collection pipe, sampling pipe, and telescopic pipe. Before installation, the connecting rod and caster support device prevent the device from being placed directly on the ground, which could easily cause damage. During installation, the caster can be used to move the device to the corresponding position for easy installation. After installation, turn the eccentric locking handle to release the two rubber pressure blocks, and then rotate the U-shaped part to retract the caster and lift it off the ground. Then reset the eccentric locking handle, which will pull the two rubber pressure blocks closer together, pressing the U-shaped part. The U-shaped part and the rubber pressure blocks are in close contact, and the friction locks the U-shaped part, thereby locking the position of the caster.

[0018] The three-way gas collection pipe, sampling pipe, telescopic pipe, and air inlet pipe are all made of 304 seamless steel pipe.

[0019] With the above structure, the 304 seamless steel pipe has good corrosion resistance, can resist the corrosion of most acids, alkalis and salts at room temperature, and can also maintain good performance in high temperature environments. Its high strength and good processing performance ensure the durability and ease of processing of the device. At this time, the device is suitable for vehicles with dual exhaust pipes.

[0020] The air intake adjustment mechanism includes a sealing plate and a handle. The sealing plate is set on one of the air intake ends of the three-way air collection pipe through a connecting component, and the handle is fixed to the sealing plate.

[0021] With the above structure, the sealing plate closes one of the air inlet ends of the three-way air collection pipe, and the handle makes it easy to put on and take off the sealing plate. At this time, the device is suitable for vehicles with a single exhaust pipe.

[0022] The first air intake assembly includes a U-shaped metal bellows, two quick-release clamps, two sealing rings, two air intake pipes, and two connecting hoses. The air intake end of the U-shaped metal bellows is connected to the first metal bellows. The two air intake ends of the U-shaped metal bellows are respectively connected to the air outlet ends of the two air intake pipes through corresponding quick-release clamps and corresponding sealing rings. The two connecting hoses are respectively fitted onto the air intake ends of the two air intake pipes. Two hose clamps are fitted onto the connecting hoses, and the two hose clamps are respectively fitted onto both ends of the connecting hoses. The structure of the second air intake assembly is the same as that of the first air intake assembly. The air intake end of the U-shaped metal bellows in the second air intake assembly is connected to the second metal bellows.

[0023] By adopting the above structure and using a U-shaped metal corrugated pipe, the number of connecting hoses can be increased to four. At this point, the device is suitable for vehicles with four exhaust pipes.

[0024] Compared with existing technologies, this new specialized tool for collecting exhaust gas using RDE sampling tubes has the following advantages:

[0025] 1. By using the three-way air collection pipe, sampling pipe, air intake adjustment mechanism, metal corrugated pipe one, and air intake assembly one and two in conjunction with each other, it can quickly adapt to vehicles with different numbers of exhaust pipes, such as single-row, double-row, and quad-row, and flexibly meet diverse testing needs. The telescopic pipe is adjustable in length, and metal corrugated pipe one and metal corrugated pipe two are flexible. The connecting hose with hose clamps can adapt to exhaust pipes of different diameters, greatly improving the compatibility of the device with different vehicle models and reducing testing costs.

[0026] 2. With the addition of connection component one and connection component two, installation is quick, operation is simple, connection is reliable, and the design is ingenious, requiring no hole matching or locking, and ensuring good sealing.

[0027] 3. By setting up suspension components and support movement components, the device can be moved easily. During installation, the device can be supported, the tilt angle of the device can be adjusted, water vapor can be prevented from flowing back in, and the installation process of the device is made more convenient.

[0028] 4. By using 304 seamless steel pipe material, 304 seamless steel pipe has good corrosion resistance and can resist the corrosion of most acids, alkalis and salts at room temperature. It can also maintain good performance in high temperature environment. Its high strength and good processing performance ensure the durability and easy processing of the equipment. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0030] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0031] Figure 3 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0032] Figure 4 This is a structural schematic diagram of the suspension assembly in this utility model.

[0033] Figure 5 This is a schematic diagram of the structure supporting the movable component in this utility model.

[0034] Figure 6 This is an exploded structural diagram of some components in the supporting moving assembly of this utility model.

[0035] In the diagram: 1. Three-way air collection pipe; 2. Sampling pipe; 3. Telescopic pipe; 4. Corrugated metal pipe I; 5. Air intake assembly I; 6. Connecting assembly I; 7. Suspension assembly; 8. Support and movement assembly; 9. Air intake pipe; 10. Connecting hose; 11. Hose clamp; 12. Quick-release clamp I; 13. Quick-release ring I; 14. Connecting ring; 15. Turnbuckle I; 16. Turnbuckle II; 17. Hook and loop; 18. Fixing ring; 19. Quick-release ring II; 20. Outer circle inner square tube; 21. Rubber stop block; 22. Rubber pressure block; 23. Central square shaft; 24. Eccentric locking handle; 25. U-shaped piece; 26. Connecting rod; 27. Caster wheel; 28. U-shaped corrugated metal pipe; 29. ​​Corrugated metal pipe II; 30. Air intake assembly II; 31. Connecting assembly II. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] Example 1

[0038] like Figure 1 , Figures 4-6 As shown, this novel special tool for collecting exhaust gas using an RDE sampling tube includes a three-way gas collection pipe 1, a sampling pipe 2, an air intake adjustment mechanism, a metal corrugated pipe 4, and several connecting components 6. The three-way gas collection pipe 1 is L-shaped, and its outlet end is connected to the sampling pipe 2. One of the air intake ends of the three-way gas collection pipe 1 is connected to the outlet end of the air intake adjustment mechanism through the connecting component 6. The air intake adjustment mechanism is located in front of the sampling pipe 2. The other air intake end of the three-way gas collection pipe 1 is connected to the outlet end of the metal corrugated pipe 4. An air intake component 5 is provided on the air intake end of the metal corrugated pipe 4, and the air intake end of the metal corrugated pipe 4 is connected to the corresponding air intake component 5 through the connecting component 6. Several suspension components 7 and several support and movement components 8 are provided on the three-way gas collection pipe 1, the sampling pipe 2, and the air intake adjustment mechanism.

[0039] In this embodiment, the device is installed at the rear of the corresponding vehicle. The intake end of the intake assembly 5 and the intake end of the intake adjustment mechanism are connected to the vehicle's exhaust pipe. The exhaust gas enters through the intake assembly 5 and the intake adjustment mechanism and is transmitted to the three-way gas collection pipe 1. The three-way gas collection pipe 1 is connected to the sampling pipe 2, so that the exhaust gas enters the sampling pipe 2. The sampling pipe 2 detects the composition of the vehicle's exhaust gas. The metal corrugated pipe 4 can be bent to a certain extent, making the device more flexible to use. Several suspension components 7 and several supporting and moving components 8 play a role in assisting fixation and supporting movement.

[0040] The intake adjustment mechanism includes a telescopic pipe 3, a second metal bellows pipe 29, an intake assembly 30, and a second connecting assembly 31. The outlet end of the telescopic pipe 3 is connected to one of the intake ends of the three-way air collection pipe 1. The intake end of the telescopic pipe 3 is connected to the outlet end of the second metal bellows pipe 29. The intake end of the second metal bellows pipe 29 is connected to the outlet end of the second intake assembly 30 through the second connecting assembly 31.

[0041] In this embodiment, during use, the vehicle exhaust gas passes sequentially through the metal bellows 29 of the intake assembly 2 30 and the telescopic pipe 3 into the three-way air collection pipe 1, where it is collected. The metal bellows 29 can be bent to a certain extent, making the device more flexible to use. The telescopic pipe 3 can extend and retract to adjust the distance between the intake assembly 1 5 and the intake assembly 2 30, thereby adapting to different vehicle models.

[0042] The intake assembly 15 includes an intake pipe 9, a connecting hose 10, and two hose clamps 11. One end of the connecting hose 10 is fitted onto the intake end of the intake pipe 9, and the two hose clamps 11 are fitted onto both ends of the connecting hose 10. The structure of the intake assembly 20 is the same as that of the intake assembly 15. The intake pipe 9 in the intake assembly 15 is connected to the metal bellows 14, and the intake pipe 9 in the intake assembly 20 is connected to the metal bellows 29.

[0043] In this embodiment, the connecting hose 10 can be adapted to different models of vehicle exhaust pipes, increasing the practicality of the device and making installation simpler. The two hose clamps 11 are used to fix the two ends of the connecting hose 10, making the installation more stable.

[0044] Connecting component 6 includes quick-release clamp 12 and sealing ring 1. Sealing ring 1 is disposed between the two opposite end flanges of the intake pipe 9 and the metal bellows 4 in the intake component 5, or sealing ring 1 is disposed between the two opposite end flanges of the telescopic pipe 3 and the three-way air collection pipe 1. Quick-release clamp 12 is adapted to the corresponding two end flanges and is sleeved on the corresponding two end flanges. The structure of connecting component 2 31 is the same as that of connecting component 6. Sealing ring 1 in connecting component 2 31 is disposed between the two opposite end flanges of the intake pipe 9 and the metal bellows 29 in the intake component 2 30. Quick-release clamp 12 in connecting component 2 31 is adapted to the corresponding two end flanges and is sleeved on the corresponding two end flanges.

[0045] In this embodiment, the flange is pre-fixed to the end of the pipe to be connected. The quick-release clamp 12 and the flange are used together for quick installation, simple operation, reliable connection, and the design is ingenious. There is no need to match the holes and lock them. The sealing ring can increase the sealing performance.

[0046] The suspension assembly 7 includes a turnbuckle 15, a turnbuckle 26, and two quick-release clips 13. The two quick-release clips 13 are fitted onto the corresponding three-way gas collection pipe 1, sampling pipe 2, and telescopic pipe 3. The upper end of each of the two quick-release clips 13 is fixed with a connecting ring 14. The turnbuckle 15 is located behind the turnbuckle 26. The lower ends of the turnbuckle 15 and the turnbuckle 26 are rotatably connected to the two connecting rings 14, respectively. The upper ends of the turnbuckle 15 and the turnbuckle 26 are fixed with buckles 17. A retaining ring 18 is fixed on the nut of the turnbuckle 15.

[0047] In this embodiment, the quick-release clasp 13 can be quickly and easily fixed at any position on the three-way air collection pipe 1, sampling pipe 2, and telescopic pipe 3. The turnbuckle 15 and turnbuckle 26 can be adjusted in length. With the flexible bending of the metal bellows 14 and 29, the three-way air collection pipe 1, sampling pipe 2, and telescopic pipe 3 can be in an inclined state with the front higher than the rear, preventing water vapor in the exhaust gas from flowing back into the vehicle's exhaust pipe. The buckle 17 at the upper end of the turnbuckle 15 is used to quickly connect to the rear of the vehicle and the suspension device. The buckle 17 at the upper end of the turnbuckle 26 is used to connect to the fixing ring 18, which can enhance the strength of the device and prevent the connection of the device from bearing excessive external force. Alternatively, the buckle 17 at the upper end of the turnbuckle 26 can be directly connected to the rear of the vehicle.

[0048] The supporting moving assembly 8 includes a quick-release ring 19, an outer circular inner square tube 20, a central square shaft 23, an eccentric locking handle 24, a U-shaped component 25, and two symmetrical rubber blocks 22. The quick-release ring 19 is fitted onto the corresponding three-way gas collection pipe 1, sampling pipe 2, and telescopic pipe 3. The outer circular inner square tube 20 is fixed to the lower end of the quick-release ring 19. Two symmetrical rubber blocks 21 are fitted onto the outer circular inner square tube 20. The upper ends of the two U-shaped sidewalls of the U-shaped component 25 are each provided with a circular through hole. The two ends of the outer circular inner square tube 20 are respectively located inside the two circular through holes. The two rubber blocks 21 are positioned... Between the two U-shaped sidewalls of the U-shaped part 25, two rubber blocks 22 are located at the two ends of the outer circle inner square tube 20 respectively. The U-shaped part 25 is located between the two rubber blocks 22. One end of the central square shaft 23 is rotatably connected to the eccentric position of the eccentric lock handle 24. The other end of the central square shaft 23 passes through one of the rubber blocks 22 and the outer circle inner square tube 20 and is screwed onto the other rubber block 22. The central square shaft 23 is adapted to the internal square through hole of the outer circle inner square tube 20. A connecting rod 26 is fixed to the lower end of the U-shaped part 25, and a universal wheel 27 is fixed to the lower end of the connecting rod 26.

[0049] In this embodiment, the quick-release retaining ring 2 19 can be quickly and easily fixed at any position on the three-way gas collection pipe 1, sampling pipe 2, and telescopic pipe 3. Before installation, the connecting rod 26 and the universal wheel 27 support the device to prevent the device from being placed directly on the ground and easily damaged. During installation, the universal wheel 27 can be used to move the device to the corresponding position for easy installation. After installation, rotate the eccentric locking handle 24 to release the two rubber pressure blocks 22, and then rotate the U-shaped part 25 to retract the universal wheel 27 and lift it off the ground. Then reset the eccentric locking handle 24, which pulls the two rubber pressure blocks 22 closer together and presses the U-shaped part 25. The U-shaped part 25 is in close contact with the rubber pressure blocks 22, and the friction locks the U-shaped part 25, thereby locking the position of the universal wheel 27.

[0050] The three-way gas collection pipe 1, sampling pipe 2, telescopic pipe 3, and air inlet pipe 9 are all made of 304 seamless steel pipe.

[0051] In this embodiment, the 304 seamless steel pipe has good corrosion resistance, can resist the corrosion of most acids, alkalis and salts at room temperature, and can also maintain good performance in high temperature environments. Its high strength and good processing performance ensure the durability and ease of processing of the device. In this case, the device is suitable for vehicles with dual exhaust pipes.

[0052] Example 2

[0053] like Figure 2 As shown, compared to Embodiment 1, the air intake adjustment mechanism includes a sealing plate and a handle. The sealing plate is set on one of the air intake ends of the three-way air collection pipe 1 through a connecting component 6, and the handle is fixed to the sealing plate.

[0054] In this embodiment, the sealing plate closes one of the air inlet ends of the three-way air collection pipe 1, and the handle makes it easy to take the sealing plate off and put it on. At this time, the device is suitable for vehicles with a single exhaust pipe.

[0055] Example 3

[0056] like Figure 3 As shown, compared to Embodiment 1, the intake assembly 5 includes a U-shaped metal bellows 28, two quick-release clamps, two sealing rings, two intake pipes 9, and two connecting hoses 10. The intake end of the U-shaped metal bellows 28 is connected to the metal bellows 4. The two intake ends of the U-shaped metal bellows 28 are connected to the outlet ends of the two intake pipes 9 through corresponding quick-release clamps and corresponding sealing rings. The two connecting hoses 10 are respectively sleeved on the intake ends of the two intake pipes 9. Two hose clamps 11 are sleeved on the connecting hoses 10, and the two hose clamps 11 are respectively sleeved on both ends of the connecting hoses 10. The structure of the intake assembly 30 is the same as that of the intake assembly 5. The intake end of the U-shaped metal bellows 28 in the intake assembly 30 is connected to the metal bellows 29.

[0057] In this embodiment, the number of connecting hoses 10 is increased to four by using a U-shaped metal bellows 28. At this time, the device is suitable for vehicles with four exhaust pipes.

[0058] The working principle of this utility model is as follows: The device is installed at the rear of the corresponding vehicle via the suspension assembly 7 and the support and movement assembly 8. The intake end of the intake assembly 5 and the intake adjustment mechanism are connected to the vehicle's exhaust pipe. The exhaust gas enters through the intake assembly 5 and the intake adjustment mechanism, and is transmitted sequentially through the metal bellows 4, the telescopic pipe 3, and the metal bellows 29 to the three-way gas collection pipe 1. The three-way gas collection pipe 1 is connected to the sampling pipe 2, thereby allowing the exhaust gas to enter the sampling pipe 2 for component detection. The metal bellows 4 and the metal bellows 29 are flexible, making the device more flexible to use. The telescopic pipe 3 is telescopic, adjusting the distance between the intake assembly 5 and the intake assembly 2 to adapt to different vehicle models. Both the connecting assembly 6 and the connecting assembly 2 adopt a structure of quick-release clamp 12, sealing ring 1, and two flanges. The device features quick installation, reliable connection, and good sealing. The quick-release shackle 13 of the suspension component 7 can be fixed to the pipe. The turnbuckle 15 and turnbuckle 26 can be adjusted in length to make the pipe tilted at the front and lower at the rear, preventing water vapor in the exhaust gas from flowing back in. The buckle 17 at the upper end is used to connect to the rear of the vehicle and enhance the strength of the device. The quick-release shackle 29 of the support and movement component 8 can be fixed to the pipe. Before installation, the caster 27 supports the device and facilitates movement. After installation, rotating the eccentric locking handle 24 can retract the caster 27 and lock its position. All pipes of the device are made of 304 seamless steel pipe, which has good corrosion resistance and high strength. By replacing different intake adjustment mechanisms and intake components 15 and 20, the device can be used for vehicles with dual exhaust pipes, single exhaust pipes, and quad exhaust pipes.

[0059] In summary, by using the three-way air collection pipe 1, sampling pipe 2, air intake adjustment mechanism, metal corrugated pipe 4, air intake assembly 5, and air intake assembly 30 together, it can quickly adapt to vehicles with different numbers of exhaust pipes, such as single-row, double-row, and quad-row, and flexibly meet diverse testing needs. Among them, the telescopic pipe 3 is adjustable in length, the metal corrugated pipe 4 and the metal corrugated pipe 29 are flexible, and the connecting hose 10 with the hose clamp 11 can adapt to exhaust pipes of different diameters, which greatly improves the compatibility of the device with different vehicle models and reduces testing costs.

[0060] By setting up connecting component 6 and connecting component 31, installation is quick, operation is simple, connection is reliable, and the design is ingenious, requiring no hole matching or locking, and the sealing is good;

[0061] By setting up the suspension component 7 and the support and movement component 8, the device can be moved easily. During installation, the device can be supported, the tilt angle of the device can be adjusted, water vapor can be prevented from flowing back in, and the installation process of the device is made more convenient.

[0062] By using 304 seamless steel pipe material, 304 seamless steel pipe has good corrosion resistance, can resist the corrosion of most acids, alkalis and salts at room temperature, and can also maintain good performance in high temperature environment. Its high strength and good processing performance ensure the durability and easy processing of the equipment.

[0063] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A new special tool for collecting exhaust gas of RDE sampling tube, comprising a three-way gas collecting pipe (1), a sampling tube (2), an air inlet adjusting mechanism, a metal corrugated pipe (4) and a plurality of connecting components (6), characterized in that, The three-way gas collection pipe (1) is L-shaped. The outlet end of the three-way gas collection pipe (1) is connected to the sampling pipe (2). One of the inlet ends of the three-way gas collection pipe (1) is connected to the outlet end of the inlet adjustment mechanism through the connecting component one (6). The inlet adjustment mechanism is located in front of the sampling pipe (2). The other inlet end of the three-way gas collection pipe (1) is connected to the outlet end of the metal corrugated pipe one (4). The inlet end of the metal corrugated pipe one (4) is provided with an inlet component one (5). The inlet end of the metal corrugated pipe one (4) is connected to the corresponding inlet component one (5) through the connecting component one (6). The three-way gas collection pipe (1), the sampling pipe (2) and the inlet adjustment mechanism are all provided with several suspension components (7) and several support moving components (8). The three-way gas collection pipe (1) and the sampling pipe (2) are both made of 304 seamless steel pipe.

2. The novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 1, characterized in that, The suspension assembly (7) includes a turnbuckle 1 (15), a turnbuckle 2 (16) and two quick-release clips 1 (13). The upper ends of the two quick-release clips 1 (13) are fixed with connecting rings (14). The turnbuckle 1 (15) is located behind the turnbuckle 2 (16). The lower ends of the turnbuckle 1 (15) and the turnbuckle 2 (16) are rotatably connected to the two connecting rings (14) respectively. The upper ends of the turnbuckle 1 (15) and the turnbuckle 2 (16) are fixed with buckles (17). The nut of the turnbuckle 1 (15) is fixed with a fixing ring (18).

3. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 2, characterized in that, The supporting moving assembly (8) includes a quick-release ring 2 (19), an outer circle inner square tube (20), a central square shaft (23), an eccentric locking handle (24), a U-shaped piece (25), and two symmetrical rubber blocks (22). The outer circle inner square tube (20) is fixed to the lower end of the quick-release ring 2 (19). Two symmetrical rubber blocks (21) are fitted on the outer circle inner square tube (20). The upper ends of the two U-shaped sidewalls of the U-shaped piece (25) are provided with circular through holes. The two ends of the outer circle inner square tube (20) are respectively located inside the two circular through holes. The two rubber blocks (21) are located between the two U-shaped sidewalls of the U-shaped piece (25). Two rubber blocks (22) are located at the two ends of the outer circle inner square tube (20), and a U-shaped piece (25) is located between the two rubber blocks (22). One end of the central square shaft (23) is rotatably connected to the eccentric position of the eccentric lock handle (24). The other end of the central square shaft (23) passes through one of the rubber blocks (22) and the outer circle inner square tube (20) and is screwed onto the other rubber block (22). The central square shaft (23) is adapted to the internal square through hole of the outer circle inner square tube (20). A connecting rod (26) is fixed at the lower end of the U-shaped piece (25), and a universal wheel (27) is fixed at the lower end of the connecting rod (26).

4. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 3, characterized in that, The connecting component 1 (6) includes a quick-release clamp 1 (12) and a sealing ring 1, with the sealing ring 1 located inside the quick-release clamp 1 (12).

5. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 4, characterized in that, The air intake adjustment mechanism consists of a telescopic pipe (3), a second metal bellows pipe (29), an air intake assembly (30), and a second connecting assembly (31). The telescopic pipe (3) is made of 304 seamless steel pipe. The air outlet of the telescopic pipe (3) is connected to one of the air inlets of the three-way air collection pipe (1). The sealing ring 1 in the connecting assembly 1 (6) corresponding to the telescopic pipe (3) is set between the two end flanges of the telescopic pipe (3) and the three-way air collection pipe (1). The corresponding quick-release clamp 1 (12) is adapted to the two end flanges of the corresponding pipe, and the corresponding quick-release clamp 1 (12) is sleeved on the two corresponding end flanges. On the end flange, the air inlet of the telescopic pipe (3) is connected to the air outlet of the metal bellows second (29). The air inlet of the metal bellows second (29) is connected to the air outlet of the air inlet assembly second (30) through the connecting assembly second (31). The structure of the connecting assembly second (31) is the same as that of the connecting assembly first (6). The two quick-release rings first (13) in the suspension assembly (7) are sleeved on the corresponding three-way gas collection pipe (1), sampling pipe (2) and telescopic pipe (3). The quick-release ring second (19) in the support moving assembly (8) is sleeved on the corresponding three-way gas collection pipe (1), sampling pipe (2) and telescopic pipe (3).

6. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 4, characterized in that, The air intake adjustment mechanism consists of a sealing plate and a handle. The sealing plate is set on one of the air intake ends of the three-way air collection pipe (1) through the connecting component one (6). The handle is fixed on the sealing plate. The two quick-release rings one (13) in the suspension component (7) are sleeved on the corresponding three-way air collection pipe (1) and sampling pipe (2). The quick-release ring two (19) in the support and movement component (8) is sleeved on the corresponding three-way air collection pipe (1) and sampling pipe (2).

7. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 5 or 6, characterized in that, The first intake assembly (5) includes an intake pipe (9), a connecting hose (10), and two hose clamps (11). The intake pipe (9) is made of 304 seamless steel pipe. One end of the connecting hose (10) is fitted onto the intake end of the intake pipe (9). The two hose clamps (11) are respectively fitted onto both ends of the connecting hose (10). The structure of the second intake assembly (30) is the same as that of the first intake assembly (5). The intake pipe (9) in the first intake assembly (5) is connected to the first metal bellows pipe (4). The sealing ring 1 in the first connecting assembly (6) corresponding to the first metal bellows pipe (4) is set in the intake pipe (9) and the first metal bellows pipe (4) in the first intake assembly (5). Between the two opposite end flanges, the corresponding quick-release clamp one (12) is adapted to the corresponding two end flanges and is fitted on the corresponding two end flanges. The intake pipe (9) in the intake assembly two (30) is connected to the metal bellows two (29). The sealing ring one in the connecting assembly two (31) is set between the two opposite end flanges of the intake pipe (9) and the metal bellows two (29) in the intake assembly two (30). The quick-release clamp one (12) in the connecting assembly two (31) is adapted to the corresponding two end flanges and is fitted on the corresponding two end flanges.

8. A novel special tool for collecting exhaust gas using an RDE sampling tube according to claim 5, characterized in that, The first intake assembly (5) includes a U-shaped corrugated metal pipe (28), two quick-release clamps, two sealing rings, two intake pipes (9), and two connecting hoses (10). The intake pipes (9) are made of 304 seamless steel pipe. The two intake ends of the U-shaped corrugated metal pipe (28) are connected to the exhaust ends of the two intake pipes (9) through the corresponding quick-release clamps and the corresponding sealing rings. The two connecting hoses (10) are respectively fitted onto the intake ends of the two intake pipes (9). Two hose clamps (11) are fitted onto the connecting hoses (10), and the two hose clamps (11) are respectively fitted onto the two ends of the connecting hoses (10). The structure of the second intake assembly (30) is the same as that of the first intake assembly (5). The intake end of the U-shaped corrugated metal pipe (28) in the first intake assembly (5) is connected to the first corrugated metal pipe (4). The sealing ring 1 in the corresponding connecting component 1 (6) is set between the two end flanges of the U-shaped metal bellows (28) and the metal bellows 1 (4) in the intake component 1 (5). The corresponding quick-release clamp 1 (12) is adapted to the two end flanges. The corresponding quick-release clamp 1 (12) is sleeved on the two end flanges. The intake end of the U-shaped metal bellows (28) in the intake component 2 (30) is connected to the metal bellows 2 (29). The sealing ring 1 in the connecting component 2 (31) is set between the two end flanges of the U-shaped metal bellows (28) and the metal bellows 2 (29) in the intake component 2 (30). The quick-release clamp 1 (12) in the connecting component 2 (31) is adapted to the two end flanges. The quick-release clamp 1 (12) in the connecting component 2 (31) is sleeved on the two end flanges.

Images