Automobile long tubular column air tightness detection device

Abstract

The utility model relates to an automobile long tubular column air tightness detection device, which comprises a detection box, a fixing sleeve and a sealing plate, and is characterized in that the bottom of the inner wall of the detection box is provided with two chutes, the interiors of the chutes are rotatably connected with threaded rods, the outer sides of the threaded rods are in threaded connection with threaded blocks, and the tops of the threaded blocks are fixedly connected with supporting rods; the fixing sleeve is located in the detection box, two connecting plates are fixedly connected to the outer side of the fixing sleeve, the connecting plates are fixedly connected with the supporting rods, and sliding columns are slidably connected to the outer side of the fixing sleeve at equal intervals. The fixing device has the advantages that the position of the fixing sleeve can be adjusted through the structure of the threaded rod, the threaded block and the supporting rod, and the fixing device adapts to long tubular columns with different lengths or installation requirements; the sliding column-clamping block is matched with a first gear and other structures to stably clamp and fix the long tubular column; the pressure pipe, the sealing connecting sleeve and the like guarantee the air tightness of gas conveying, and the overall structure provides a stable and adjustable installation and detection basis for air tightness detection of the long tubular column.

Description

Technical Field

[0001] This utility model relates to the field of long tubular column technology, and in particular to an airtightness testing device for automotive long tubular columns. Background Technology

[0002] As an important component of automobiles, the airtightness of the automotive long column directly affects the normal operation and safety of related automotive systems.

[0003] However, existing technologies for testing the airtightness of automotive long tube columns have several problems. On the one hand, some testing devices use a single, insufficiently stable method to fix the long tube column, making it difficult to adapt to long tube columns of different specifications and shapes. During the testing process, the long tube column may shake or shift, affecting the accuracy of the test results. On the other hand, the sealing performance of the testing device is poor, which can easily lead to gas leakage during the testing process, causing deviations in the test data and making it impossible to accurately determine the airtightness of the long tube column. Utility Model Content

[0004] In view of the aforementioned problems in the existing technology, the main objective of this utility model is to provide an airtightness testing device for automotive long pipe columns, thereby solving many problems existing in the current automotive long pipe column airtightness testing technology. On the one hand, some testing devices have a relatively simple and unstable method for fixing long pipe columns, making it difficult to adapt to long pipe columns of different specifications and shapes. During the testing process, the long pipe column may shake or shift, affecting the accuracy of the test results. On the other hand, the sealing performance of the testing device is poor, which can easily lead to gas leakage during the testing process, causing deviations in the test data and making it impossible to accurately determine the airtightness of the long pipe column.

[0005] The technical solution of this utility model is as follows: A device for testing the air tightness of a long automotive column includes a testing box, a fixed sleeve, and a sealing plate. Two sliding grooves are formed at the bottom of the inner wall of the testing box. A threaded rod is rotatably connected inside each sliding groove. A threaded block is threadedly connected to the outer side of each threaded rod. A support rod is fixedly connected to the top of each threaded block. The fixed sleeve is located inside the testing box. Two connecting plates are fixedly connected to the outer side of the fixed sleeve. Each connecting plate is fixedly connected to the support rod. Sliding columns are equidistantly connected to the outer side of the fixed sleeve. One end of each sliding column extends into the interior of the fixed sleeve and is fixedly connected to a clamping block. A first toothed groove is equidistantly formed on one side of each sliding column. A rotating shaft is rotatably connected between the two connecting plates and to one side of the sliding column. A first gear is fixedly connected to the outer side of each rotating shaft. The first gear meshes with the first toothed groove. A pressure tube is fixedly connected to the inner wall of the testing box. A sealing connecting sleeve is rotatably connected to one end of the pressure tube. The end of the pressure tube away from the sealing connecting sleeve extends to the outer side of the testing box.

[0006] The above technical solution allows for the adjustment of the fixed sleeve position through the threaded rod-threaded block-support rod structure, adapting to long tubing of different lengths or installation requirements; the sliding column-clamping block, in conjunction with the first gear and other structures, enables stable clamping and fixing of the long tubing; the pressure pipe and sealing connection sleeve ensure the airtightness of gas transmission. The overall structure provides a stable and adjustable installation and testing basis for the airtightness testing of long tubing.

[0007] In a preferred embodiment, a sealing ring is fixedly connected to the bottom of the sealing plate, and the sealing ring is used in conjunction with the inner wall of the test box. Bolts are threaded to the four corners of the top of the sealing plate, and the bottom of the bolts extends to the bottom of the sealing plate and is threaded to the top of the test box.

[0008] The above technical solution, with the sealing ring fitting into the inner wall of the test chamber and the bolts tightening it, enhances the airtightness of the test chamber, ensures stable internal air pressure during the test, improves the accuracy of the test results, and avoids the impact of external air entry or internal gas leakage on the judgment of the airtightness of the long tubular column.

[0009] In a preferred embodiment, a fixing block is fixedly connected to the outer side of the fixing sleeve and to one side of the sliding column, and a rotating ring is slidably connected between the multiple fixing blocks. The outer side of the rotating ring is provided with second tooth grooves at equal intervals. The outer side of the rotating shaft and to one side of the first gear is fixedly connected with a second gear, and the second gears are all meshed with the second tooth grooves.

[0010] The above technical solution, with its rotating ring-second tooth groove-second gear structure, ensures the synchronicity and stability of the movement of multiple sliding columns, making the clamping of long tube columns more uniform and reliable. This avoids the impact of unstable clamping on the detection results during the testing process, and also better simulates the installation state of long tube columns in actual use, thereby improving the effectiveness of the testing.

[0011] In a preferred embodiment, a groove is formed at the bottom of the inner wall of the detection box between two sliding grooves. A rotating rod is rotatably connected inside the groove. Both ends of the rotating rod extend into the interior of the sliding groove and are fixedly connected to a second conical wheel. A first conical wheel is fixedly connected to the outer side of the threaded rod. The first conical wheel meshes with the corresponding second conical wheel.

[0012] Through the above technical solution, the conical gear transmission structure enables the simultaneous rotation of two threaded rods by rotating one turntable, making the position adjustment of the fixed sleeve more convenient and synchronous, improving the operation convenience and adjustment efficiency of the device, and enabling the long tube column to be quickly adjusted to the appropriate detection position.

[0013] In a preferred embodiment, a third conical wheel is fixedly connected to the outer side of the rotating rod, and a turntable is rotatably connected to the outer side of the detection box. The output shaft of the turntable extends into the interior of the groove and is fixedly connected to a fourth conical wheel, which meshes with the third conical wheel.

[0014] Through the above technical solution, the transmission structure of turntable-fourth cone wheel-third cone wheel-rotor-second cone wheel-first cone wheel-threaded rod transforms the external rotation operation into the rotation of the internal threaded rod, allowing the operator to conveniently adjust the position of the fixing sleeve outside the testing box, making the operation more convenient. At the same time, it avoids complex operations inside the testing box, improving the practicality and ease of use of the device.

[0015] In a preferred embodiment, an observation glass is installed on the outside of the testing box, a filling pipe is installed on one side of the testing box above the pressure pipe, a discharge pipe is installed on one side of the testing box below the pressure pipe, a pressure gauge is installed on the top of the sealing plate, a control panel is installed on one side of the testing box and on the side of the observation glass, and rubber blocks are fixedly connected to the four corners of the bottom of the testing box.

[0016] The above technical solution, through the arrangement of components such as the observation glass, filling pipe, drain pipe, pressure gauge, control panel, and rubber block, improves the functionality of the detection device. The observation glass facilitates direct visualization of crack locations; the filling and drain pipes allow for convenient addition and discharge of the detection medium; the pressure gauge provides real-time pressure feedback; the control panel enhances the controllability of the detection; and the rubber block strengthens the stability of the device, making the entire detection process more scientific, efficient, convenient, and reliable.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] In this invention, the position of the fixing sleeve can be adjusted through the structure of threaded rod-threaded block-support rod to adapt to long tubing of different lengths or installation requirements; the sliding column-clamping block, together with the first gear and other structures, can achieve stable clamping and fixing of the long tubing; the pressure pipe and sealing connection sleeve ensure the airtightness of gas transmission. The overall structure provides a stable and adjustable installation and testing foundation for the airtightness testing of long tubing. The sealing ring cooperates with the inner wall of the testing chamber, and with the tightening effect of the bolts, the sealing performance of the testing chamber is enhanced, ensuring stable internal air pressure during the testing process, improving the accuracy of the test results, and avoiding the influence of external air entry or internal gas leakage on the judgment of the airtightness of the long tubing. Attached Figure Description

[0019] Figure 1 This utility model provides a structural schematic diagram of an automotive long column airtightness testing device;

[0020] Figure 2 This utility model provides a structural schematic diagram of an automotive long column airtightness testing device;

[0021] Figure 3 This utility model provides a structural schematic diagram of an automotive long column airtightness testing device;

[0022] Figure 4 This utility model provides a structural schematic diagram of an automotive long column airtightness testing device.

[0023] Legend: 1. Testing box; 2. Slide groove; 3. Threaded rod; 4. Threaded block; 5. Support rod; 6. Fixing sleeve; 7. Connecting plate; 8. Sliding column; 9. First tooth groove; 10. Rotating shaft; 11. First gear; 12. Fixing block; 13. Rotating ring; 14. Second tooth groove; 15. Second gear; 16. Groove; 17. First bevel gear; 18. Second bevel gear; 19. Rotating rod; 20. Third bevel gear; 21. Fourth bevel gear; 22. Sealing plate; 23. Sealing ring; 24. Bolt; 25. Pressure pipe; 26. Sealing connecting sleeve; 27. Turntable; 28. Discharge pipe; 29. ​​Filling pipe; 30. Pressure gauge; 31. Observation glass; 32. Control panel; 33. Rubber block; 34. Clamping block. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this utility model provides a technical solution: it includes a testing box 1, a fixing sleeve 6, and a sealing plate 22. Two sliding grooves 2 are formed at the bottom of the inner wall of the testing box 1. Threaded rods 3 are rotatably connected inside each sliding groove 2. Threaded blocks 4 are threadedly connected to the outer sides of each threaded rod 3. Support rods 5 are fixedly connected to the tops of each threaded block 4. The fixing sleeve 6 is located inside the testing box 1. Two connecting plates 7 are fixedly connected to the outer side of the fixing sleeve 6. The connecting plates 7 are fixedly connected to the support rods 5. Sliding columns 8 are equidistantly slidably connected to the outer side of the fixing sleeve 6. One end of each slide column 8 extends into the interior of the fixed sleeve 6 and is fixedly connected to a clamping block 34. The slide column 8 has a first toothed groove 9 equidistantly opened on one side. The two connecting plates 7 are rotatably connected to a rotating shaft 10 on one side of the slide column 8. The outer side of the rotating shaft 10 is fixedly connected to a first gear 11. The first gear 11 meshes with the first toothed groove 9. The inner wall of the detection box 1 is fixedly connected to a pressure tube 25. One end of the pressure tube 25 is rotatably connected to a sealing connecting sleeve 26. The end of the pressure tube 25 away from the sealing connecting sleeve 26 extends to the outer side of the detection box 1.

[0027] In this embodiment, all other air outlets of the long tube column are sealed, leaving only one hole, which is placed between the clamping blocks inside the fixed sleeve. Rotating the turntable 27 causes the output shaft of the turntable 27 to drive the fourth conical wheel 21 to rotate. The fourth conical wheel 21 meshes with the third conical wheel 20, causing the rotating rod 19 to rotate. The second conical wheels 18 at both ends of the rotating rod 19 drive the first conical wheel 17 to rotate, thereby causing the threaded rod 3 to rotate. The threaded block 4 moves within the sliding groove 2, causing the support rod 5 and the fixed sleeve 6 to adjust their positions. Then, rotating the rotating shaft 10 causes the first gear 11 to mesh with the first tooth groove 9 on the sliding column 8, causing the sliding column 8 to move and causing the clamping block 34 to fix the long tube column. Afterwards, the long tube column is connected to the sealing connection sleeve 26 at one end of the pressure pipe 25, and the detection box 1 is sealed with a sealing plate 22. Air pressure is supplied to the detection box through the pressure pipe 25 via a pressure tank, and the pressure gauge 30 detects the internal pressure of the detection box 1.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a sealing ring 23 is fixedly connected to the bottom of the sealing plate 22. The sealing ring 23 is used in conjunction with the inner wall of the test box 1. Bolts 24 are threadedly connected to the four corners of the top of the sealing plate 22. The bottom of the bolts 24 extends to the bottom of the sealing plate 22 and is threadedly connected to the top of the test box 1.

[0029] In this embodiment, after fixing the long tubing and connecting the pressure tube 25, the sealing plate 22 is placed on top of the test chamber 1. The sealing ring 23 at the bottom of the sealing plate 22 is in contact with the inner wall of the test chamber 1. Then, by tightening the bolts 24, the sealing plate 22 is tightly fixed to the top of the test chamber 1, thereby sealing the test chamber and preventing gas leakage during the test.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a fixing block 12 is fixedly connected to the outer side of the fixing sleeve 6 and to one side of the sliding column 8. A rotating ring 13 is slidably connected between the multiple fixing blocks 12. The outer side of the rotating ring 13 is provided with second tooth grooves 14 at equal intervals. The outer side of the rotating shaft 10 and to one side of the first gear 11 is fixedly connected with a second gear 15. The second gears 15 are all meshed with the second tooth grooves 14.

[0031] In this embodiment, when fixing the long tube column, rotating the rotating shaft 10 causes the first gear 11 to mesh with the first tooth groove 9 to move the sliding column 8. In addition, the second gear 15 on the outside of the rotating shaft 10 meshes with the second tooth groove 14 on the outside of the rotating ring 13. The rotating ring 13 slides between the fixing blocks 12, so that multiple sliding columns 8 can move synchronously and stably, driving the clamping block 34 to clamp the long tube column evenly and stably from different directions.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a groove 16 is provided at the bottom of the inner wall of the test box 1 and between the two slide grooves 2. A rotating rod 19 is rotatably connected inside the groove 16. Both ends of the rotating rod 19 extend into the interior of the slide groove 2 and are fixedly connected to a second conical wheel 18. A first conical wheel 17 is fixedly connected to the outer side of the threaded rod 3. The first conical wheel 17 is meshed with the corresponding second conical wheel 18.

[0033] In this embodiment, rotating the turntable 27 causes its output shaft to drive the fourth cone wheel 21 to rotate. The fourth cone wheel 21 meshes with the third cone wheel 20, causing the rotating rod 19 to rotate. The second cone wheel 18, which extends to both ends of the rotating rod 19 into the slide groove 2, meshes with the first cone wheel 17 on the outside of the threaded rod 3, thereby driving the threaded rod 3 to rotate. When the threaded rod 3 rotates, the threaded block 4 moves along the threaded rod 3 in the slide groove 2, thereby causing the support rod 5 and the fixed sleeve 6 to change their horizontal positions in the detection box 1.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a third conical wheel 20 is fixedly connected to the outer side of the rotating rod 19, and a turntable 27 is rotatably connected to the outer side of the detection box 1. The output shaft of the turntable 27 extends into the interior of the groove 16 and is fixedly connected to a fourth conical wheel 21. The fourth conical wheel 21 is meshed with the third conical wheel 20.

[0035] In this embodiment, the turntable 27 on the outside of the rotating detection box 1 is rotated. The output shaft of the turntable 27 extends into the groove 16 and drives the fourth cone wheel 21 to rotate. The fourth cone wheel 21 meshes with the third cone wheel 20 on the outside of the rotating rod 19, thereby causing the rotating rod 19 to rotate. The rotating rod 19 then drives the first cone wheel 17 on the outside of the threaded rod 3 to rotate through the second cone wheels 18 at both ends, thereby realizing the rotation of the threaded rod 3 and adjusting the position of the fixing sleeve 6.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an observation glass 31 is installed and connected to the outside of the test box 1. A filling pipe 29 is installed and connected to one side of the test box 1 and above the pressure pipe 25. A discharge pipe 28 is installed and connected to one side of the test box 1 and below the pressure pipe 25. A pressure gauge 30 is installed and connected to the top of the sealing plate 22. A control panel 32 is installed and connected to one side of the test box 1 and to one side of the observation glass 31. Rubber blocks 33 are fixedly connected to the four corners of the bottom of the test box 1.

[0037] In this embodiment, during the testing process, the observation glass 31 can be used to observe the internal condition of the testing chamber 1, such as whether bubbles are generated after adding reagents with testing function through the injection tube 29 to determine the location of cracks in the long tubing; the injection tube 29 is used to inject the gas or reagents required for testing into the testing chamber; the discharge tube 28 is used to discharge the gas or reagents in the testing chamber after the testing is completed; the pressure gauge 30 monitors the internal pressure of the testing chamber in real time, and when the pressure fluctuates, it indicates that cracks may have appeared in the long tubing; the control panel 32 can be used to control some parameter settings and other operations during the testing process; the rubber block 33 makes the testing device more stable.

[0038] Working principle:

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the remaining air outlets of the long tube column are sealed, leaving only one hole, which is placed between the clamping blocks inside the fixed sleeve. Rotating the turntable 27 causes the output shaft of the turntable 27 to drive the fourth conical wheel 21 to rotate. The fourth conical wheel 21 meshes with the third conical wheel 20, causing the rotating rod 19 to rotate. The second conical wheels 18 at both ends of the rotating rod 19 drive the first conical wheel 17 to rotate, which in turn causes the threaded rod 3 to rotate. The threaded block 4 moves within the sliding groove 2, causing the support rod 5 and the fixed sleeve 6 to adjust their positions. Then, rotating the rotating shaft 10 causes the first gear 11 to mesh with the first tooth groove 9 on the sliding column 8, causing the sliding column 8 to move and drive the clamping block 34 to fix the long tube column. Afterwards, the long tube column is connected to the sealing connection sleeve 26 at one end of the pressure tube 25, and the detection box 1 is sealed with the sealing plate 22. The pressure is supplied to the test chamber through the pressure pipe 25 via the pressure tank. The pressure gauge 30 measures the internal pressure of the test chamber 1. After the long pipe column is fixed and the pressure pipe 25 is connected, the sealing plate 22 is placed on top of the test chamber 1. The sealing ring 23 at the bottom of the sealing plate 22 is in contact with the inner wall of the test chamber 1. Then, the sealing plate 22 is tightly fixed to the top of the test chamber 1 by tightening the bolts 24, thereby sealing the test chamber and preventing gas leakage during the test.

[0040] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the air tightness of a long automotive column, comprising a testing box (1), a fixing sleeve (6), and a sealing plate (22), characterized in that: The bottom of the inner wall of the testing box (1) has two sliding grooves (2). A threaded rod (3) is rotatably connected inside each of the sliding grooves (2). A threaded block (4) is threadedly connected to the outer side of each threaded rod (3). A support rod (5) is fixedly connected to the top of each threaded block (4). The fixing sleeve (6) is located inside the testing box (1). Two connecting plates (7) are fixedly connected to the outer side of the fixing sleeve (6). Each connecting plate (7) is fixedly connected to the support rod (5). Sliding columns (8) are equidistantly slidably connected to the outer side of the fixing sleeve (6). One end of each sliding column (8) extends into the interior of the fixing sleeve (6). A clamping block (34) is fixedly connected. First tooth grooves (9) are equally spaced on one side of the sliding column (8). A rotating shaft (10) is rotatably connected between the two connecting plates (7) and on one side of the sliding column (8). A first gear (11) is fixedly connected to the outside of the rotating shaft (10). The first gear (11) meshes with the first tooth groove (9). A pressure tube (25) is fixedly connected to the inner wall of the detection box (1). A sealing sleeve (26) is rotatably connected to one end of the pressure tube (25). The end of the pressure tube (25) away from the sealing sleeve (26) extends to the outside of the detection box (1).

2. The airtightness testing device for a long automotive tube column according to claim 1, characterized in that: A sealing ring (23) is fixedly connected to the bottom of the sealing plate (22). The sealing ring (23) is used in conjunction with the inner wall of the test box (1). Bolts (24) are threadedly connected to the four corners of the top of the sealing plate (22). The bottom of the bolts (24) extends to the bottom of the sealing plate (22) and is threadedly connected to the top of the test box (1).

3. The airtightness testing device for a long automotive column according to claim 1, characterized in that: A fixing block (12) is fixedly connected to the outside of the fixing sleeve (6) and to one side of the sliding column (8). A rotating ring (13) is slidably connected between the fixing blocks (12). A second tooth groove (14) is provided at equal intervals on the outside of the rotating ring (13). A second gear (15) is fixedly connected to the outside of the rotating shaft (10) and to one side of the first gear (11). The second gear (15) is meshed with the second tooth groove (14).

4. The airtightness testing device for a long automotive column according to claim 1, characterized in that: The bottom of the inner wall of the test box (1) is provided with a groove (16) between two slides (2). A rotating rod (19) is rotatably connected inside the groove (16). Both ends of the rotating rod (19) extend into the interior of the slide (2) and are fixedly connected with a second conical wheel (18). A first conical wheel (17) is fixedly connected to the outer side of the threaded rod (3). The first conical wheel (17) meshes with the corresponding second conical wheel (18).

5. The automotive long column airtightness testing device according to claim 4, characterized in that: The outer side of the rotating rod (19) is fixedly connected to a third cone wheel (20), and the outer side of the detection box (1) is rotatably connected to a turntable (27). The output shaft of the turntable (27) extends into the interior of the groove (16) and is fixedly connected to a fourth cone wheel (21). The fourth cone wheel (21) meshes with the third cone wheel (20).

6. The airtightness testing device for a long automotive column according to claim 1, characterized in that: An observation glass (31) is installed on the outside of the detection box (1). A filling pipe (29) is installed on one side of the detection box (1) above the pressure pipe (25). A discharge pipe (28) is installed on one side of the detection box (1) below the pressure pipe (25). A pressure gauge (30) is installed on the top of the sealing plate (22). A control panel (32) is installed on one side of the detection box (1) and on one side of the observation glass (31). Rubber blocks (33) are fixedly connected to the four corners of the bottom of the detection box (1).

Images