An automobile exhaust pipe detection platform

Abstract

The utility model discloses a kind of automobile exhaust pipe detection benches, it is characterized by, including support mesa, the surface of support mesa is connected with water storage tank, the side of water storage tank is connected with positioning frame, the side of positioning frame is equipped with electric push rod, the end of electric push rod is connected with bearing plate, the bottom of bearing plate is equipped with clamping positioning mechanism, the inside of clamping positioning mechanism is equipped with exhaust pipe, the side of support mesa is equipped with detection gas pump, the output of detection gas pump is connected with rubber hose, the end of rubber hose is equipped with connection sealing mechanism. The utility model has following effect: by clamping positioning mechanism and link sealing mechanism, the exhaust pipe to be detected can be clamped and fixed, and the two ends opening is sealed, the exhaust pipe after sealing is placed in water storage tank, whether there is bubble to generate is observed, water detection and visual observation detection mode, not only detection principle is intuitive easy to operate, and equipment structure is greatly simplified, manufacturing cost and maintenance difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe testing technology, and more specifically, to an automotive exhaust pipe testing platform. Background Technology

[0002] The automotive exhaust pipe is a key component of the engine exhaust system, typically installed between the engine exhaust manifold and the muffler. Its main function is to guide the high-temperature exhaust gases produced by engine combustion outwards, and its flexible connection during transmission is achieved through structural design. This flexible connection effectively absorbs and buffers vibrations generated during engine operation, reducing the transmission of vibrations to the vehicle body, thereby reducing vibration and noise. It also alleviates stress concentration caused by thermal expansion and mechanical displacement, extending the service life of the entire exhaust muffler system. Therefore, it is widely used in various passenger cars, commercial vehicles, and construction machinery vehicles.

[0003] During the manufacturing process of automotive exhaust pipes, rigorous testing of their airtightness is essential to ensure structural integrity and safety. Currently, the conventional method involves fixing the completed exhaust pipe onto a specialized testing platform, filling it with pressurized gas (such as compressed air), maintaining this pressure for a period, and monitoring pressure changes to determine if a leak exists. If the pressure drop exceeds a set threshold, the exhaust pipe is considered to have a sealing defect. However, this existing testing method has significant technical limitations: First, it can only qualitatively determine whether the exhaust pipe as a whole has leaked, but cannot precisely pinpoint the exact location of the leak, leading to a lack of clear guidance for subsequent repairs. Second, to accurately capture minute pressure fluctuations, the system must be equipped with high-precision pressure sensors and data acquisition and analysis modules. This not only increases equipment costs but also makes the entire testing device more complex, placing higher demands on the operating environment and maintenance capabilities. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes an automotive exhaust pipe testing platform to overcome the aforementioned technical problems existing in the existing related technologies.

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

[0006] A vehicle exhaust pipe testing platform includes a support platform, a water tank connected to the surface of the support platform, a positioning frame connected to one side of the water tank, an electric push rod installed on one side of the positioning frame, a bearing plate connected to the end of the electric push rod, a clamping positioning mechanism at the bottom of the bearing plate, an exhaust pipe inside the clamping positioning mechanism, a testing air pump installed on one side of the support platform, a rubber hose connected to the output end of the testing air pump, and a sealing mechanism at the end of the rubber hose.

[0007] Furthermore, in order to fix and clamp the exhaust pipe to be tested, the clamping and positioning mechanism includes a positioning rod connected to one side of the bottom of the bearing plate, a transmission screw rotatably connected to one side of the positioning rod, a transmission sleeve threadedly connected to the surface of the transmission screw, an adjusting frame connected to the bottom of the transmission sleeve, a bidirectional screw rotatably installed inside the adjusting frame, limit rods threadedly connected to both sides of the surface of the bidirectional screw, and a sealing plate connected to one side of the surface of the positioning rod.

[0008] Furthermore, in order to achieve sealing and inflation of one end of the exhaust pipe, the connecting sealing mechanism includes a conical sealing head connected to the end of the rubber hose, a support frame connected to each side of the surface of the conical sealing head, a clamping bolt threaded to one side of the surface of the support frame, and a clamping plate connected to one end of the clamping bolt.

[0009] Furthermore, in order to enable switching control of the various electrical components within the device, a multi-control switch is installed on one side of the support platform.

[0010] Furthermore, to facilitate the turning and rotating of the transmission screw and the double-acting screw, a turning head is connected to one end of both the transmission screw and the double-acting screw.

[0011] Furthermore, to enhance the sealing effect when one end of the exhaust pipe contacts the sealing plate, a rubber gasket is connected to one side of the sealing plate.

[0012] Furthermore, in order to discharge the test water in the water storage tank, a drain pipe is connected to one side of the water storage tank, and a drain valve is installed on one side of the drain pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By setting up a water storage tank and filling it with testing water, and using an electric push rod to immerse the clamped exhaust pipe entirely in the water for airtightness testing, a test air pump will fill the exhaust pipe with gas. If a leak is found, obvious bubbles will appear at the leak point. Operators can visually observe the location of the bubbles, thus accurately determining the specific location of the leak. This solves the technical problem of traditional pressure testing methods, which can only determine whether there is an overall leak but cannot pinpoint the defect location, greatly improving the accuracy of testing and the efficiency of subsequent maintenance. The combination of water testing and visual observation not only makes the testing principle intuitive and easy to implement but also significantly simplifies the equipment structure, reducing manufacturing costs and maintenance difficulty.

[0015] 2. The clamping and positioning mechanism is equipped with a two-way screw and a limit rod for lateral adjustment, as well as a transmission screw to drive the overall movement mechanism of the adjustment frame. It can clamp and fix exhaust pipes of different diameters, wall thicknesses and cross-sectional shapes by manually rotating the screw head. At the same time, the tapered sealing head and the multi-directional clamping bolt connection sealing mechanism can adapt to various sizes of pipe openings, ensuring a firm and reliable seal, which significantly improves the applicability and flexibility of the testing station. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the surface structure of an automotive exhaust pipe testing platform according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of an automotive exhaust pipe testing platform according to an embodiment of the present utility model;

[0019] Figure 3 This is a rear view of an automotive exhaust pipe testing platform according to an embodiment of the present utility model;

[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a detailed surface structure diagram of a conical sealing head in an automotive exhaust pipe testing bench according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the surface structure of the exhaust pipe in an automotive exhaust pipe testing platform according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Support platform; 2. Water storage tank; 3. Positioning frame; 4. Electric push rod; 5. Bearing plate; 6. Clamping and positioning mechanism; 601. Positioning rod; 602. Transmission screw; 603. Transmission sleeve; 604. Adjusting frame; 605. Double-acting screw; 606. Limiting rod; 607. Sealing plate; 7. Exhaust pipe; 8. Detection air pump; 9. Rubber hose; 10. Connecting and sealing mechanism; 1001. Conical sealing head; 1002. Support frame; 1003. Clamping bolt; 1004. Clamping plate; 11. Multi-control switch; 12. Tightening head; 13. Rubber pad; 14. Drain pipe; 15. Discharge valve. Detailed Implementation

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

[0026] According to an embodiment of the present invention, an automotive exhaust pipe testing bench is provided.

[0027] like Figures 1-6 As shown, an automotive exhaust pipe testing platform according to an embodiment of this utility model includes a metal support platform 1. A rectangular water tank 2 is connected to the surface of the support platform 1 for injecting a certain amount of testing water. A positioning frame 3 is connected to one side of the water tank 2, and an electric push rod 4 is installed on one side of the positioning frame 3. A bearing plate 5 is connected to the end of the electric push rod 4. A clamping and positioning mechanism 6 is provided at the bottom of the bearing plate 5. An exhaust pipe 7 is provided inside the clamping and positioning mechanism 6. The clamping and positioning mechanism 6 can fix the exhaust pipe 7 to be tested under the bearing plate 5. Then, by extending and retracting the electric push rod 4, the exhaust pipe can be moved. 7. Move up and down; A detection air pump 8 is installed on one side of the support platform 1. The output end of the detection air pump 8 is connected to a rubber hose 9. The end of the rubber hose 9 is provided with a sealing mechanism 10, which is used to seal one end of the rubber hose 9 to one end of the pipe to be tested. Then, through the electric push rod 4, the clamped exhaust pipe 7 is moved down into the water storage tank 2, so that the internal detection water covers the exhaust pipe 7. A certain amount of gas is injected into the detection pipe through the detection air pump 8, and it is observed whether bubbles emerge, so as to accurately judge the sealing performance of the exhaust pipe 7. Based on the position of the bubbles, the leakage point on the exhaust pipe 7 can be determined.

[0028] like Figures 1-6As shown, the clamping and positioning mechanism 6 includes a positioning rod 601 connected to one side of the bottom of the bearing plate 5. A transmission screw 602 is rotatably connected to one side of the positioning rod 601. A transmission sleeve 603 is threadedly connected to the surface of the transmission screw 602. An adjusting frame 604 is connected to the bottom of the transmission sleeve 603. A bidirectional screw 605 is rotatably mounted inside the adjusting frame 604. Limiting rods 606 are threadedly connected to both sides of the surface of the bidirectional screw 605. A sealing plate 607 is connected to one side of the surface of the positioning rod 601. By rotating the bidirectional screw 605, the two limiting rods 606 can be moved closer to the outlet. On both sides of the air pipe 7, the rotating transmission screw 602 causes the threaded sleeve to move the adjusting frame 604 and the two limiting rods 606 toward the sealing plate 607, thereby allowing the limiting rods 606 to squeeze both sides of the exhaust pipe 7, clamping the exhaust pipe 7 to one side of the sealing plate 607 while sealing one end of the exhaust pipe 7; the connecting sealing mechanism 10 includes a conical sealing head 1001 connected to the end of the rubber hose 9, and a support frame 1002 connected to each side of the surface of the conical sealing head 1001, with a threaded connection on one side of the surface of the support frame 1002. A clamping bolt 1003 is used, with a clamping plate 1004 connected to one end. One end of a conical sealing head 1001 is inserted into the exhaust pipe 7 to be tested. By tightening the clamping bolts 1003, the clamping plate 1004 securely clamps one end of the exhaust pipe 7, achieving a fixed and sealed connection between the conical sealing head 1001 at the end of the rubber hose 9 and one end of the exhaust pipe 7. Furthermore, the design of the sealing plate 607 and the conical sealing head 1001 effectively seals exhaust pipes 7 with different opening sizes. A multi-control switch is installed on one side of the support platform 1. The switch 11 is used to control the switching of the electric push rod 4 and the detection air pump 8; one end of the transmission screw 602 and the double-acting screw 605 are both connected to a turning head 12, which is used to facilitate the turning and rotation of the transmission screw 602 and the double-acting screw 605; a rubber pad 13 is connected to one side of the sealing plate 607, which is used to increase the sealing effect when one end of the exhaust pipe 7 contacts the sealing plate 607; a drain pipe 14 is connected to one side of the water storage tank 2, and a discharge valve 15 is installed on one side of the drain pipe 14. By turning the discharge valve 15, the discharge of detection water in the water storage tank 2 can be controlled.

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

[0030] In actual use, one end of the exhaust pipe is first placed against the sealing plate 607 on one side of the positioning rod 601. The surface of the sealing plate 607 is provided with a rubber pad 13, which can effectively improve the sealing performance of the contact surface. Then, the bidirectional screw 605 is manually rotated. Since the bidirectional screw 605 is rotatably installed in the adjusting frame 604 and the two sides are symmetrically connected with the limiting rods 606 by threads, the two limiting rods 606 move synchronously towards each other during the rotation, thereby adapting to exhaust pipes 7 of different widths and moving to both sides. Then, the transmission screw 602 is rotated, causing the transmission screw 602 to drive the transmission sleeve 603 to move axially, thereby pushing the adjusting frame 604 and the two limiting rods 606 on it to move as a whole towards the sealing plate 607. This allows the limiting rods 606 to firmly press the entire exhaust pipe between the sealing plate 607 and the limiting rods 606, completing the stable clamping of the exhaust pipe and the effective sealing of one end opening. Subsequently, the conical sealing head 1001 at the end of the rubber hose 9 connected to the output end of the test air pump 8 is inserted into the opening at the other end of the exhaust pipe. Multiple support frames 1002 are provided around the outer periphery of the conical sealing head 1001, each support frame 1002 equipped with a clamping bolt 1003. The end of the clamping bolt 1003 is connected to a clamping plate 1004. By tightening each clamping bolt 1003 one by one, the multiple clamping plates 1004 uniformly press against the outer wall of the exhaust pipe from different directions, thereby achieving a reliable sealed connection between the rubber hose 9 and the other end of the exhaust pipe, ensuring that gas will not leak from the interface during subsequent inflation. After clamping and sealing both ends of the exhaust pipe, the operator controls the electric push rod 4 to retract via the multi-control switch 11, causing the support plate 5 and the clamped exhaust pipe to move vertically downwards until the entire exhaust pipe is completely submerged in the test water in the water storage tank 2. At this time, the test air pump 8 is turned on, injecting gas at a certain pressure into the exhaust pipe. If there is a leakage defect in the exhaust pipe, the gas will escape from the leak point, forming visible bubbles in the water. By directly observing whether bubbles are emerging from the water surface and their specific locations, it is possible to accurately determine whether the vent pipe is leaking and precisely locate the leak point, providing a clear basis for subsequent repairs.

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

Claims

1. A vehicle exhaust pipe testing platform, characterized in that, The device includes a support platform (1), a water storage tank (2) connected to the surface of the support platform (1), a positioning frame (3) connected to one side of the water storage tank (2), an electric push rod (4) installed on one side of the positioning frame (3), a bearing plate (5) connected to the end of the electric push rod (4), a clamping positioning mechanism (6) provided at the bottom of the bearing plate (5), an exhaust pipe (7) provided inside the clamping positioning mechanism (6), a detection air pump (8) installed on one side of the support platform (1), a rubber hose (9) connected to the output end of the detection air pump (8), and a connecting sealing mechanism (10) provided at the end of the rubber hose (9).

2. The automotive exhaust pipe testing platform according to claim 1, characterized in that, The clamping and positioning mechanism (6) includes a positioning rod (601) connected to one side of the bottom of the bearing plate (5), a transmission screw (602) rotatably connected to one side of the positioning rod (601), a transmission sleeve (603) threadedly connected to the surface of the transmission screw (602), an adjusting frame (604) connected to the bottom of the transmission sleeve (603), a bidirectional screw (605) rotatably installed inside the adjusting frame (604), a limit rod (606) threadedly connected to both sides of the surface of the bidirectional screw (605), and a sealing plate (607) connected to one side of the surface of the positioning rod (601).

3. The automotive exhaust pipe testing platform according to claim 1, characterized in that, The connecting sealing mechanism (10) includes a conical sealing head (1001) connected to the end of the rubber hose (9). Each side of the surface of the conical sealing head (1001) is connected to a support frame (1002). One side of the surface of the support frame (1002) is threaded with a clamping bolt (1003). One end of the clamping bolt (1003) is connected to a clamping plate (1004).

4. The automotive exhaust pipe testing platform according to claim 1, characterized in that, A multi-control switch (11) is installed on one side of the surface of the support platform (1).

5. The automotive exhaust pipe testing platform according to claim 2, characterized in that, Both the drive screw (602) and the double screw (605) have a screwing head (12) connected to one end.

6. The automotive exhaust pipe testing platform according to claim 5, characterized in that, A rubber pad (13) is connected to one side of the sealing plate (607).

7. The automotive exhaust pipe testing platform according to claim 1, characterized in that, A drain pipe (14) is connected to one side of the water storage tank (2), and a drain valve (15) is installed on one side of the drain pipe (14).

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