A sealing test structure for automobile exhaust pipes

Abstract

This utility model provides a sealing performance testing structure for automotive exhaust pipes, including a housing. Multiple rectangular blocks are arranged at the upper end of the housing. A mounting plate is slidably mounted between the rectangular blocks via sliding columns. An air intake pipe is arranged inside the mounting plate, and a pressure sensor is connected in series in the middle of the air intake pipe. A sealing plate is also provided at the upper end of the housing. A sliding plate is slidably mounted inside the housing. A fixed arc-shaped plate is provided at the upper end of the sliding plate, and a sliding arc-shaped plate is slidably mounted inside the sliding plate. A driving mechanism for moving the sliding arc-shaped plate up and down is provided at the lower end of the sliding plate. This automotive exhaust pipe sealing performance testing structure allows for automatic unloading after the sealing performance testing of the exhaust pipe is completed, enabling personnel to quickly load the next exhaust pipe to be tested onto the clamping mechanism for sealing performance testing. Non-testing time is minimized, and the utilization rate of the testing equipment is higher.

Description

Technical Field

[0001] This utility model belongs to the field of automotive exhaust pipe manufacturing technology, and specifically relates to a sealing performance testing structure for automotive exhaust pipes. Background Technology

[0002] A vehicle exhaust pipe sealing test structure is a device specifically designed to detect leaks in a vehicle's exhaust system. This structure typically includes components such as a clamping mechanism, a pressure sensor, a gas supply system, and a control system. By clamping and fixing the vehicle's exhaust pipe and injecting gas at a certain pressure into the pipe, the pressure changes or gas flow rate are monitored to determine whether there are leaks in welds or other connection points.

[0003] Existing automotive exhaust pipe sealing testing structures involve clamping and fixing the exhaust pipe, then injecting pressurized gas into the pipe. Pressure sensors monitor pressure changes or gas flow to determine if there are leaks in the weld. If no leaks are detected, personnel must unlock the clamping mechanism and manually remove the tested exhaust pipe. The next exhaust pipe to be tested is then installed on the clamping mechanism for sealing testing. The testing itself (pressurization, pressure holding, and judgment) only takes tens of seconds to a few minutes. However, the process of manually unlocking the clamp, removing the tested exhaust pipe, placing the new exhaust pipe, and re-locking the clamp may also take tens of seconds or even longer, increasing the physical burden on operators and affecting work efficiency. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a sealing test structure for automobile exhaust pipes. After the sealing test of automobile exhaust pipes is completed, the pipes can be automatically unloaded, allowing personnel to quickly install the next automobile exhaust pipe to be tested onto the clamping mechanism for sealing test. Non-testing time is minimized, and the utilization rate of the testing equipment is higher.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sealing test structure for automobile exhaust pipes, including a housing, multiple rectangular blocks at the upper end of the housing, mounting plates slidably arranged between the multiple rectangular blocks via sliding columns, an air intake pipe inside the mounting plate, a pressure sensor connected in series in the middle of the air intake pipe, a sealing plate at the upper end of the housing, a sliding plate slidably arranged inside the housing, a fixed arc plate at the upper end of the sliding plate, a sliding arc plate slidably arranged inside the sliding plate, a driving mechanism for driving the sliding arc plate to move up and down at the lower end of the sliding plate, an electric push rod one at the upper end of the housing, the telescopic end of the electric push rod one connected to the left side of the mounting plate, the driving mechanism including a connecting plate arranged below the sliding plate, multiple sliding cylinders inside the connecting plate, the sliding arc plate slidably connected to the inside of the sliding cylinders, an electric push rod two inside the connecting plate, the telescopic end of the electric push rod two connected to the lower end of the sliding arc plate.

[0006] As a further improvement of this utility model, the front side of the box is hinged with multiple box door panels, and the multiple box door panels are positioned correspondingly on the left and right sides.

[0007] As a further improvement of this utility model, a rectangular plate is provided inside the box, and a lead screw is rotatably arranged between the rectangular plate and the box. The lower end of the sliding plate is threadedly connected to the lead screw. A drive unit for driving the lead screw to rotate is provided inside the box. The drive unit includes a motor installed inside the box, and the output shaft of the motor is connected to the front end of the lead screw through a coupling.

[0008] As a further improvement of this utility model, a frame plate is provided at the upper end of the box body, and multiple rotating rollers are rotatably arranged inside the frame plate, with the multiple rotating rollers arranged at equal intervals.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] Firstly, by controlling the operation of the electric push rod and the motor, the sliding arc plate moves downward under the constraint of the slide cylinder. This causes the car exhaust pipe, after testing, to roll and slide outside the box due to the inertial curvature of the fixed arc plate, achieving rapid discharge of the car exhaust pipe. It can automatically unload the car exhaust pipe after the clamping and sealing test is completed, allowing personnel to quickly load the next car exhaust pipe to be tested onto the clamping mechanism for sealing test. Non-testing time is minimized, and the utilization rate of the testing equipment is higher.

[0011] Secondly, the car exhaust pipes that roll down from the fixed arc plate can fall onto the rotating roller of the frame plate, and then slide down into the collection box located at the lower end of the frame plate through the rotation of the rotating roller, which makes it easy for operators to collect the car exhaust pipes after the inspection is completed.

[0012] Thirdly, the door panel can be opened to put materials into the internal box for storage, making it convenient for personnel to use. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0016] Figure 3 This is a schematic diagram of the rear cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of this utility model.

[0018] In the diagram: 101, housing; 102, door panel; 103, pressure sensor; 104, sealing plate; 105, mounting plate; 106, air inlet pipe; 107, electric push rod one; 108, rectangular block; 201, sliding arc plate; 202, connecting plate; 203, slide cylinder; 204, electric push rod two; 205, sliding plate; 206, rectangular plate; 207, lead screw; 208, motor; 209, fixed arc plate; 301, frame plate; 302, rotating roller. Detailed Implementation

[0019] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0020] like Figure 1 , 2As shown in Figure 3, a sealing test structure for an automobile exhaust pipe includes a housing 101. Multiple rectangular blocks 108 are arranged at the upper end of the housing 101. A mounting plate 105 is slidably arranged between the rectangular blocks 108 via sliding columns. An air intake pipe 106 is arranged inside the mounting plate 105, and a pressure sensor 103 is connected in series in the middle of the air intake pipe 106. A sealing plate 104 is also provided at the upper end of the housing 101. A sliding plate 205 is slidably arranged inside the housing 101. A fixed arc-shaped plate 209 is provided at the upper end of the sliding plate 205, and a sliding arc-shaped plate 201 is slidably arranged inside the sliding plate 205. A driving mechanism for driving the sliding arc-shaped plate 201 to move up and down is provided at the lower end of the sliding plate 205. Multiple door panels 102 are hinged to the front side of the housing 101, allowing personnel to open the door panels 102 and place materials into the housing 101 for storage.

[0021] like Figure 3 , 4 As shown, the upper end of the housing 101 is also provided with an electric push rod 107. The telescopic end of the electric push rod 107 is connected to the left side of the mounting plate 105. The driving mechanism includes a connecting plate 202 provided on the lower side of the sliding plate 205. Multiple sliding cylinders 203 are provided inside the connecting plate 202. The sliding arc plate 201 is slidably connected to the inside of the sliding cylinders 203. An electric push rod 204 is provided inside the connecting plate 202. The telescopic end of the electric push rod 204 is connected to the lower end of the sliding arc plate 201. A rectangular plate 206 is provided inside the housing 101. A lead screw 207 is rotatably provided between the rectangular plate 206 and the housing 101. The lower end of the sliding plate 205 is threadedly connected to the lead screw 207. A driving unit for driving the lead screw 207 to rotate is provided inside the housing 101. The driving unit includes a motor 208 provided inside the housing 101. The output shaft of the motor 208 is connected to the front end of the lead screw 207 through a coupling.

[0022] First, connect the intake pipe 106 to an external air pump mechanism. Place the vehicle exhaust pipe to be tested on the fixed arc plate 209 and the sliding arc plate 201. Then, control the operation of the electric push rod 107. The telescopic end drives the intake pipe 106 on the mounting plate 105 to move to the right and contact the left end of the vehicle exhaust pipe. The right end of the vehicle exhaust pipe is subjected to the rightward force of the intake pipe 106 and abuts against the sealing plate 104. Then, close the operation of the electric push rod 107. Next, the air pump and the intake pipe 106 are used to inflate the vehicle exhaust pipe. Control the operation of the pressure sensor 103 connected to the external host and use the pressure sensor 103 to continuously monitor the pressure level. If the intake pipe 106 is completely sealed, the pressure should remain constant. If there is a leak, the gas in the pipe will escape, causing the pressure to drop. By observing and analyzing this pressure change on the external host display, the existence of the leak can be accurately identified.

[0023] After the vehicle exhaust pipe is inspected, the electric push rod 107 is controlled to move the intake pipe 106 to the left to unlock the vehicle exhaust pipe. Then, the motor 208 is controlled to run, and the output shaft drives the lead screw 207 to rotate, which in turn drives the vehicle exhaust pipe on the sliding plate 205 to move backward. Then, the electric push rod 204 is controlled to run, and the sliding arc plate 201 moves downward under the restriction of the sliding cylinder 203. This causes the inspected vehicle exhaust pipe to roll and slide outside the box 101 due to the arc-shaped inertia of the fixed arc plate 209, thus achieving rapid discharge of the vehicle exhaust pipe.

[0024] According to another embodiment of the present invention, such as Figure 1 As shown, a frame plate 301 is provided at the upper end of the box 101. Multiple rotating rollers 302 are rotatably arranged inside the frame plate 301. The exhaust pipe of the car rolling down from the fixed arc plate 209 can fall onto the rotating rollers 302 of the frame plate 301 and slide down into the collection box located at the lower end of the frame plate 301 through the rotation of the rotating rollers 302.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sealing performance testing structure for an automobile exhaust pipe, comprising a housing (101), characterized in that: The upper end of the housing (101) is provided with a plurality of rectangular blocks (108). The interior of the plurality of rectangular blocks (108) is slidably provided with a mounting plate (105) via sliding columns. The interior of the mounting plate (105) is provided with an air inlet pipe (106). A pressure sensor (103) is connected in series in the middle of the air inlet pipe (106). The upper end of the housing (101) is also provided with an abutment sealing plate (104). The interior of the housing (101) is slidably provided with a sliding plate (205). The upper end of the sliding plate (205) is provided with a fixed arc plate (209). The interior of the sliding plate (205) is slidably provided with a sliding arc plate (201). The lower end of the sliding plate (205) is provided with a driving mechanism for driving the sliding arc plate (201) to move up and down.

2. The sealing performance testing structure for an automobile exhaust pipe as described in claim 1, characterized in that: The upper end of the housing (101) is also provided with an electric push rod (107), and the telescopic end of the electric push rod (107) is connected to the left side of the mounting plate (105).

3. The sealing performance testing structure for an automobile exhaust pipe as described in claim 1, characterized in that: The driving mechanism includes a connecting plate (202) disposed on the lower side of the sliding plate (205). The connecting plate (202) has multiple sliding cylinders (203) inside. The sliding arc plate (201) is slidably connected to the sliding cylinders (203). The connecting plate (202) has an electric push rod (204) inside. The telescopic end of the electric push rod (204) is connected to the lower end of the sliding arc plate (201).

4. The sealing performance testing structure for an automobile exhaust pipe as described in claim 1, characterized in that: The box (101) is provided with a rectangular plate (206) inside, and a lead screw (207) is rotatably connected between the rectangular plate (206) and the box (101). The lower end of the sliding plate (205) is threadedly connected to the lead screw (207). The box (101) is provided with a drive unit for driving the lead screw (207) to rotate.

5. The sealing performance testing structure for an automobile exhaust pipe as described in claim 4, characterized in that: The drive unit includes a motor (208) installed inside the housing (101), and the output shaft of the motor (208) is connected to the front end of the lead screw (207) via a coupling.

6. The sealing performance testing structure for an automobile exhaust pipe as described in claim 1, characterized in that: The upper end of the box (101) is provided with a frame plate (301), and multiple rotating rollers (302) are rotatably arranged inside the frame plate (301).

7. The sealing performance testing structure for an automobile exhaust pipe as described in claim 1, characterized in that: The front side of the box (101) is hinged with multiple box door panels (102).

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