A vehicle exhaust gas intelligent diagnostic integrated device

Abstract

This utility model relates to the technical field of exhaust gas diagnostic devices, and discloses an integrated intelligent diagnostic device for motor vehicle exhaust gases. The device includes a diagnostic unit with a detection component at its rear end. The detection component includes a sampling tube and a sampling probe. A connecting pipe is fixedly installed at one end of the sampling probe near the sampling tube. A fixing component is fixedly installed on the outer wall of the connecting pipe. The fixing component includes a fixing clamp and two sets of support frames, each including a support rod and a push rod. By setting a fixing component at one end of the sampling probe, the fixing component, through the linkage of the support rod and the push rod, engages with the inner wall of the exhaust pipe, causing the sampling probe to float in the center, avoiding contact with the pipe wall and interfering with airflow, thus improving the representativeness of the sampling. The rotating shaft, gear, and handwheel constitute an adjustment structure, driving the push rod to move via a rack, thereby bringing the support rod and circular contact closer to the pipe wall. This allows for adaptation to different pipe diameters, improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas diagnostic devices, and in particular to an integrated intelligent diagnostic device for motor vehicle exhaust gases. Background Technology

[0002] When using commercially available integrated vehicle exhaust gas diagnostic machines, an exhaust gas collection module is needed to collect exhaust gas in the exhaust pipe. The usual operation is to directly place the sampling probe into the exhaust pipe. However, the probe is prone to contacting the pipe wall, which can cause airflow disturbance or particulate matter deposition, making the sample unable to reflect the true emission status.

[0003] For example, the utility model application with application number CN202311205327.8 discloses an integrated machine for vehicle exhaust gas repair and diagnosis, including an exhaust gas diagnosis terminal. A central component is fixedly installed at the bottom front end of the exhaust gas diagnosis terminal. A receiving device is fixedly installed on the left side of the central component. A transmission mechanism is fixedly installed inside the receiving device. The transmission mechanism includes a fixed contact component, a motor, and a threaded rod. The threaded rod is fixedly installed at the center of the rear end of the motor. The fixed contact component is threaded onto the threaded rod. The fixed contact component includes a guide device and a support device. The guide device is fixedly installed at the bottom inside the support device. The guide device includes a first gear, a second gear, a connecting rope, a guide slide plate, a support cavity, a diverter base plate, a first spring, a push scraper, and a take-up wheel.

[0004] The above-mentioned device has the same problem as other existing exhaust gas diagnostic integrated machines: the sampling probe is placed directly into the exhaust pipe and contacts the bottom of the inner wall of the exhaust pipe, which can cause airflow disturbance or particulate matter deposition.

[0005] To address these issues, those skilled in the art have provided an integrated intelligent diagnostic device for motor vehicle exhaust emissions to solve the problems mentioned in the background section. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an integrated intelligent diagnostic device for motor vehicle exhaust emissions, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A vehicle exhaust gas intelligent diagnostic integrated device includes a diagnostic device. A detection component is located at the rear end of the diagnostic device, comprising a sampling tube and a sampling probe. A connecting tube, which is a hollow cylinder, is fixedly installed at one end of the sampling probe near the sampling tube. A filter tube is connected through the sampling tube at the other end near the sampling probe, and the connecting tube and filter tube are fixedly connected and communicate with each other. A fixing component is fixedly installed on the outer wall of the connecting tube. When unfolded, the fixing component engages and is fixed inside the exhaust pipe, allowing the sampling probe to suspend within the exhaust pipe for sampling and detection. The fixing component includes a fixing clamp and two sets of support frames. Each set of support frames includes a support rod and a push rod. A rotating shaft and a handwheel for adjusting the position of the push rod are located at the top of the fixing clamp. A gear is fixedly threaded through the rotating shaft, and the position of the push rod changes during the rotation of the rotating shaft.

[0009] According to the aforementioned intelligent diagnostic integrated device for motor vehicle exhaust emissions, the fixing clamps are in two sets. The two sets of fixing clamps are fixedly installed on the outer wall of the connecting pipe by screws. A rectangular protective cover and a limiting frame are fixedly installed at the top of each set of fixing clamps, and the limiting frame is located inside the cavity of the rectangular protective cover.

[0010] According to the aforementioned intelligent diagnostic integrated machine for motor vehicle exhaust emissions, both ends of the support rod are fixedly equipped with circular contacts, and the two sets of push rods are in a centrally symmetrical state above the fixing hoop.

[0011] According to the aforementioned intelligent diagnostic integrated machine for motor vehicle exhaust emissions, one end of the rotating shaft is fixedly connected to a handwheel, and the other end of the rotating shaft movably passes through the corresponding limiting frame and is movably mounted on one side wall of the rectangular protective cover cavity through a bearing.

[0012] According to the aforementioned intelligent diagnostic integrated machine for motor vehicle exhaust emissions, racks are embedded on the sides of the two sets of push rods that are close to each other, and the racks are in active meshing with the corresponding gears.

[0013] According to the aforementioned intelligent diagnostic device for motor vehicle exhaust emissions, a limiting block is fixedly installed on one outer wall of the rectangular protective cover, and the rotating shaft moves through the corresponding limiting block.

[0014] According to the aforementioned intelligent diagnostic integrated device for motor vehicle exhaust emissions, a threaded groove is provided at the top of the limiting block, and a limiting screw is threadedly connected to the top of the limiting block. The bottom end of the limiting screw can contact the outer wall of the rotating shaft.

[0015] This utility model provides an integrated intelligent diagnostic device for motor vehicle exhaust emissions, which has the following beneficial effects:

[0016] (1) By setting a fixing component at one end of the sampling probe, the fixing component is engaged with the inner wall of the exhaust pipe after being extended by the linkage of the support rod and the push rod, so that the sampling probe is suspended in the center, avoiding contact with the pipe wall and interfering with the airflow, thus improving the representativeness of the sampling. The rotating shaft, gear, and handwheel constitute an adjustment structure, and the push rod is driven to move by the rack, thereby bringing the support rod and the circular contact closer to the pipe wall, which can be adapted to different pipe diameters. The practicality of the device is improved through reasonable structural design.

[0017] (2) By setting a rotating shaft and a handwheel to be fixedly connected, the handwheel rotates to drive the rotating shaft to rotate, the rotating shaft is fixedly connected to the gear, and a rack is installed on one side of the push rod. The rack meshes with the corresponding gear, so that the gear rotates and the rack and push rod move as a whole. The push rod drives the corresponding support rod and the circular contact to approach the inner wall of the exhaust pipe.

[0018] (3) By fixing a limiting block on one side of the outer wall of the rectangular protective cover, the rotating shaft moves through the corresponding limiting block. The top of the limiting block has a threaded groove, and the top of the limiting block is threaded to a limiting screw. The bottom of the limiting screw can contact the outer wall of the rotating shaft. The threaded connection design allows for the screwing depth of the limiting screw, thereby flexibly adapting to the limiting requirements under different exhaust pipe diameters and improving the versatility of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an integrated intelligent diagnostic device for motor vehicle exhaust emissions according to the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection relationship between the sampling probe and the sampling tube of the intelligent diagnostic integrated machine for motor vehicle exhaust emissions according to this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the fixed component of the intelligent diagnostic integrated machine for motor vehicle exhaust emissions according to this utility model;

[0022] Figure 4 This is a schematic diagram showing the positional relationship between the push rod and the limiting frame of the intelligent integrated diagnostic device for motor vehicle exhaust emissions according to this utility model;

[0023] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0024] Legend:

[0025] 10. Diagnostic equipment; 11. Sampling tube; 12. Sampling probe; 13. Fixing assembly; 14. Connecting tube; 15. Filter tube; 16. Fixing clamp; 17. Support rod; 18. Circular contact; 19. Push rod; 20. Rectangular protective cover; 21. Rack; 22. Limiting bracket; 23. Rotating shaft; 24. Gear; 25. Handwheel; 26. Limiting block; 27. Limiting screw. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figure 1-5 As shown, this utility model is an integrated intelligent diagnostic device for motor vehicle exhaust emissions, including a diagnostic device 10. A detection component is located at the rear end of the diagnostic device 10, comprising a sampling tube 11 and a sampling probe 12. A connecting tube 14, which is a hollow cylinder, is fixedly installed at one end of the sampling probe 12 near the sampling tube 11. A filter tube 15 is connected through the sampling tube 11 near the sampling probe 12. The connecting tube 14 and the filter tube 15 are fixedly connected and communicate with each other. A fixing component 13 is fixedly installed on the outer wall of the connecting pipe 14. After the fixing component 13 is unfolded, it is snapped into the exhaust pipe, so that the sampling probe 12 is suspended in the exhaust pipe for sampling and detection. The fixing component 13 includes a fixing hoop 16 and two sets of support frames. Each set of support frames includes a support rod 17 and a push rod 19. The top of the fixing hoop 16 is provided with a rotating shaft 23 and a handwheel 25 for adjusting the position of the push rod 19. A gear 24 is fixedly passed through the rotating shaft 23. The position of the push rod 19 is changed during the rotation of the rotating shaft 23.

[0028] It is worth noting that the diagnostic device 10 is an instrument used to detect the content of various gaseous elements in automobile exhaust. The diagnostic device 10 is a motor vehicle exhaust maintenance and diagnostic integrated machine (application number CN202311205327.8) that has been disclosed in the prior art, and will not be elaborated here.

[0029] Specifically, by setting a fixing component 13 at one end of the sampling probe 12, the fixing component 13 is deployed through the linkage of the support rod 17 and the push rod 19 and then engages with the inner wall of the exhaust pipe, so that the sampling probe 12 is suspended in the center, avoiding contact with the pipe wall and interfering with the airflow, thus improving the representativeness of the sampling. The rotating shaft 23, gear 24, and handwheel 25 constitute an adjustment structure, which drives the push rod 19 to move through the rack 21, thereby bringing the support rod 17 and the circular contact 18 closer to the pipe wall, which can adapt to different pipe diameters. The practicality of the device is improved through reasonable structural design.

[0030] Among them, such as Figure 3 As shown, there are two sets of fixing clamps 16, which are fixedly installed on the outer wall of the connecting pipe 14 by screws. A rectangular protective cover 20 and a limiting frame 22 are fixedly installed at the top of each set of fixing clamps 16, with the limiting frame 22 located inside the cavity of the rectangular protective cover 20. Circular contacts 18 are fixedly installed at both ends of the support rod 17, and the two sets of push rods 19 are centrally symmetrical above the fixing clamps 16.

[0031] Specifically, by setting two sets of fixing clamps 16 to fix on the outer wall of the connecting pipe 14, installation and disassembly are more convenient. Rectangular protective covers 20 and limit frames 22 are fixedly installed on the top of the two sets of fixing clamps 16. The rectangular protective covers 20 protect the limit frames 22 and push rods 19, and at the same time block external dust and oil stains, extending the life of key components.

[0032] Among them, such as Figure 4 As shown, one end of the rotating shaft 23 is fixedly connected to the handwheel 25, and the other end of the rotating shaft 23 movably passes through the corresponding limiting frame 22 and is movably mounted on one side wall of the rectangular protective cover 20 cavity through a bearing. A rack 21 is embedded on the side of each of the two sets of push rods 19 that are close to each other, and the rack 21 movably meshes with the corresponding gear 24.

[0033] Specifically, by setting the rotating shaft 23 to be fixedly connected to the handwheel 25, the rotation of the handwheel 25 drives the rotating shaft 23 to rotate, the rotating shaft 23 is fixedly connected to the gear 24, and the push rod 19 is inlaid with rack 21 on one side. The rack 21 is movably meshed with the corresponding gear 24, so that the rotation of the gear 24 causes the rack 21 and the push rod 19 to move as a whole, and the push rod 19 drives the corresponding support rod 17 and the circular contact 18 to approach the inner wall of the exhaust pipe.

[0034] Among them, such as Figure 5 As shown, a limiting block 26 is fixedly installed on one outer wall of the rectangular protective cover 20, and the rotating shaft 23 moves through the corresponding limiting block 26. A threaded groove is provided at the top of the limiting block 26, and a limiting screw 27 is threadedly connected to the top of the limiting block 26. The bottom end of the limiting screw 27 can contact the outer wall of the rotating shaft 23.

[0035] Specifically, a limiting block 26 is fixedly installed on one outer wall of the rectangular protective cover 20, and the rotating shaft 23 moves through the corresponding limiting block 26. A threaded groove is opened at the top of the limiting block 26, and a limiting screw 27 is threadedly connected to the top of the limiting block 26. The bottom end of the limiting screw 27 can contact the outer wall of the rotating shaft 23. The threaded connection design allows for the screwing depth of the limiting screw 27, thereby flexibly adapting to the limiting requirements under different exhaust pipe diameters and improving the versatility of the device.

[0036] The specific working principle of this utility model of an integrated intelligent diagnostic device for motor vehicle exhaust is as follows: A rotating shaft 23 is fixedly connected to a handwheel 25. The rotation of the handwheel 25 drives the rotating shaft 23 to rotate. The rotating shaft 23 is fixedly connected to a gear 24. A rack 21 is embedded on one side of the push rod 19. The rack 21 is in motion meshing with the corresponding gear 24. Thus, the rotation of the gear 24 causes the rack 21 and the push rod 19 to move as a whole. The push rod 19 drives the corresponding support rod 17 and the circular contact 18 to approach the inner wall of the exhaust pipe, so that the sampling probe 12 is suspended in the center, avoiding contact with the pipe wall and interfering with the airflow, thereby improving the representativeness of the sampling.

[0037] 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 claimed utility model.

Claims

1. A vehicle exhaust gas intelligent diagnostic integrated device, comprising a diagnostic device (10), characterized in that: The diagnostic device (10) is equipped with a detection component at its rear end, which includes a sampling tube (11) and a sampling probe (12). The sampling probe (12) is fixedly installed with a connecting tube (14) at one end near the sampling tube (11). The connecting tube (14) is a hollow cylinder. The sampling tube (11) is connected to a filter tube (15) at one end near the sampling probe (12). The connecting tube (14) and the filter tube (15) are fixedly connected and communicate with each other. The outer wall of the connecting pipe (14) is fixedly installed with a fixing component (13). After the fixing component (13) is unfolded, it is snapped into the exhaust pipe, so that the sampling probe (12) is suspended in the exhaust pipe for sampling and detection. The fixing component (13) includes a fixing hoop (16) and two sets of support frames. Each set of support frames includes a support rod (17) and a push rod (19). The top of the fixing hoop (16) is provided with a rotating shaft (23) and a handwheel (25) for adjusting the position of the push rod (19). The rotating shaft (23) is fixedly connected to a gear (24). The position of the push rod (19) is changed during the rotation of the rotating shaft (23).

2. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 1, characterized in that: The fixing clamps (16) are in two sets. The two sets of fixing clamps (16) are fixedly installed on the outer wall of the connecting pipe (14) by screws. A rectangular protective cover (20) and a limiting frame (22) are fixedly installed on the top of each set of fixing clamps (16). The limiting frame (22) is located inside the cavity of the rectangular protective cover (20).

3. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 1, characterized in that: Both ends of the support rod (17) are fixedly installed with circular contacts (18), and the two sets of push rods (19) are in a centrally symmetrical state above the fixing hoop (16).

4. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 1, characterized in that: One end of the rotating shaft (23) is fixedly connected to the handwheel (25), and the other end of the rotating shaft (23) moves through the corresponding limiting frame (22) and is mounted on one side wall of the rectangular protective cover (20) cavity through the bearing.

5. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 1, characterized in that: Both sets of push rods (19) have racks (21) embedded on their sides that are close to each other, and the racks (21) are in active engagement with the corresponding gears (24).

6. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 2, characterized in that: A limiting block (26) is fixedly installed on one side of the outer wall of the rectangular protective cover (20), and the rotating shaft (23) moves through the corresponding limiting block (26).

7. The integrated intelligent diagnostic device for motor vehicle exhaust emissions according to claim 6, characterized in that: The top of the limiting block (26) is provided with a threaded groove, and the top of the limiting block (26) is threadedly connected to a limiting screw (27), and the bottom of the limiting screw (27) can contact the outer wall of the rotating shaft (23).

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