A device for detecting the size of an automobile exhaust pipe
By designing a signal transceiver and a linear slide, the inner diameter of automobile exhaust pipes can be measured quickly and accurately, solving the problems of low efficiency and poor accuracy in existing technologies and improving the automation and stability of the detection device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI JINJIANG ZHIRUN TECH CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-06-19
AI Technical Summary
Existing automotive exhaust pipe size detection devices are inefficient and inaccurate, and require manual reading of the scale, which affects the results.
The detection device, which uses a signal transceiver and controller, measures the inner diameter by laser or ultrasonic means. Combined with a linear slide and support structure, it achieves automated measurement and precise positioning, thus expanding its application range.
It improves measurement efficiency and accuracy, ensures fast and accurate results without manual reading, and enhances the stability and versatility of the device.
Smart Images

Figure CN224382414U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive exhaust pipe manufacturing technology, and specifically relates to an automotive exhaust pipe size detection device. Background Technology
[0002] During the production of automotive exhaust pipes, it is necessary to inspect the inner diameter of the exhaust pipes. While existing exhaust pipe size inspection devices can meet the basic requirement of inspecting the inner diameter of the exhaust pipes, they typically rely on a ruler to display the measurement results. This necessitates manual reading of the results by the user, resulting in low measurement efficiency. Furthermore, the inability to read the ruler's scale at an angle affects the accuracy of the results, thus failing to fully meet user needs.
[0003] For example, the utility model patent with announcement number CN222027628U discloses a device for detecting the size of an automobile exhaust pipe. In the technical solution of this patent document, the measuring ruler is fixed on the first abutment plate, and the zero mark of the measuring ruler is flush with the top of the first abutment plate. The corresponding size data is measured by the bottom of the second abutment plate at the corresponding position of the measuring ruler. However, since the user needs to read the corresponding mark on the measuring ruler at the bottom of the second abutment plate to obtain the measurement result, it will affect the overall efficiency and accuracy of the measurement. Utility Model Content
[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a device for measuring the size of an automotive exhaust pipe. This device not only meets the basic requirement of measuring the inner diameter of the exhaust pipe, but also obtains the measurement results quickly and accurately, thereby better meeting people's usage needs.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a vehicle exhaust pipe size detection device, including a base, a vertical plate is provided on one side of the base, a fixing module is provided on the vertical plate, an mounting plate located at the side end of the vertical plate is also slidably provided on the base, a mounting block is vertically slidably provided on the mounting plate, a crossbar is provided on the mounting block, a first signal transceiver is provided at the top of the crossbar, a second signal transceiver is provided at the bottom of the crossbar, and a controller electrically connected to the first signal transceiver and the second signal transceiver and a display electrically connected to the controller are also provided on the mounting block.
[0006] As a further improvement of this utility model, a first linear slide is arranged horizontally on the base, the mounting plate is connected to the slide seat of the first linear slide, a support slide rod located at the side end of the first linear slide is also provided on the base, and a support slide sleeve slidably connected to the support slide rod is also provided on the mounting plate.
[0007] As a further improvement of this utility model, a second linear slide is vertically arranged on the mounting plate, and the crossbar is connected to the slide seat of the second linear slide. A connecting groove is provided on the mounting plate, and a connecting slider that is slidably connected to the connecting groove is also provided on the crossbar. Through the cooperation of the second linear slide, the connecting groove, and the connecting slider, the crossbar can be stably adjusted vertically.
[0008] As a further improvement of this invention, both the sliding hole of the connecting groove and the cross-section of the connecting slider are T-shaped. This prevents the connecting slider from shifting laterally relative to the connecting groove, thereby providing better support and sliding guidance for the crossbar.
[0009] As a further improvement of this invention, a support leg is also provided at the bottom of the base. The support leg design at the bottom of the base increases the stability of the equipment.
[0010] As a further improvement of this utility model, an extension plate is provided at the bottom side of the support leg, and an anchor bolt for connecting to the ground is provided on the extension plate.
[0011] As a further improvement of this utility model, the fixing module is a three-jaw chuck. The design of the three-jaw chuck can fix exhaust pipes of different shapes and sizes, expanding the applicability of the device and enhancing its versatility.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] Firstly, through the cooperation of the first signal transceiver, the second signal transceiver, the controller, and the display, the inner diameter of the exhaust pipe can be measured quickly and accurately, and the user can easily read the measurement results, significantly improving measurement efficiency and accuracy, and meeting the demand for high accuracy in measurement results.
[0014] Secondly, the design of the crossbar allows the transceiver to slide up and down to accommodate exhaust pipes of different sizes. Combined with the design of the first linear slide, the second linear slide, the support slide rod, the support sleeve, and the T-shaped connection structure, the stability of the device is enhanced, ensuring accurate sliding and positioning during the measurement process, and improving overall durability and reliability. Attached Figure Description
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of this utility model;
[0018] Figure 3This is a schematic diagram of the structure of this utility model.
[0019] In the diagram: 101, base; 102, vertical plate; 103, mounting plate; 104, horizontal bar; 105, first signal transceiver; 106, second signal transceiver; 107, controller; 108, display; 109, three-jaw chuck; 110, mounting block; 201, first linear slide; 202, support slide rod; 203, support slide sleeve; 301, second linear slide; 302, connecting slide groove; 303, connecting slider; 401, support leg; 402, extension plate; 403, anchor bolt. Detailed Implementation
[0020] 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.
[0021] like Figure 1 , 2 As shown, a vehicle exhaust pipe size detection device includes a base 101, a vertical plate 102 on one side of the base 101, a fixing module on the vertical plate 102, a mounting plate 103 slidably mounted on the base 101 located at the side end of the vertical plate 102, a mounting block 110 slidably mounted on the mounting plate 103, a crossbar 104 mounted on the mounting block 110, a first signal transceiver 105 mounted at the top of the crossbar 104, a second signal transceiver 106 mounted at the bottom of the crossbar 104, a controller 107 electrically connected to the first signal transceiver 105 and the second signal transceiver 106, and a display 108 electrically connected to the controller 107 are also mounted on the mounting block 110.
[0022] like Figure 1 , 3 As shown, a first linear slide 201 is horizontally arranged on the base 101, and the mounting plate 103 is connected to the slide of the first linear slide 201. A support slide rod 202 located on the side of the first linear slide 201 is also provided on the base 101. The support slide rod 202 is U-shaped, and a support sleeve 203 that is slidably connected to the support slide rod 202 is also provided on the mounting plate 103.
[0023] like Figure 1 , 2As shown, a second linear slide 301 is vertically mounted on the mounting plate 103. The crossbar 104 is connected to the slide block of the second linear slide 301. A connecting groove 302 is provided on the mounting plate 103, and a connecting slider 303 that is slidably connected to the connecting groove 302 is also provided on the crossbar 104. Through the cooperation of the second linear slide 301, the connecting groove 302, and the connecting slider 303, the crossbar 104 can be stably adjusted vertically.
[0024] like Figure 1 , 2 As shown, both the sliding hole of the connecting groove 302 and the cross-section of the connecting slider 303 are T-shaped. This prevents the connecting slider 303 from shifting laterally relative to the connecting groove 302, thus providing better support and sliding guidance for the crossbar 104.
[0025] like Figure 1 As shown, a support leg 401 is also fixedly installed at the bottom of the base 101. The design of the support leg 401 at the bottom of the base 101 increases the stability of the equipment.
[0026] like Figure 1 As shown, the fixing module is a three-jaw chuck 109. The design of the three-jaw chuck 109 can fix exhaust pipes of different shapes and sizes, expanding the applicability of the device and enhancing its versatility.
[0027] Workers can place the testing device on a stable working area, ensuring that the support legs 401 at the bottom of the base 101 firmly support the entire device. Then, according to the size and shape of the exhaust pipe to be tested, adjust the fixing module (three-jaw chuck 109) to clamp the exhaust pipe and ensure its stable fixation.
[0028] Then, the slide block of the second linear slide 301 is driven to move up and down. Under the sliding cooperation of the connecting slider 303 and the connecting groove 302, the crossbar 104, the first signal transceiver 105, and the second signal transceiver 106 are driven to move up and down, so that their vertical positions meet the requirements for insertion into the exhaust pipe. Then, the slide block of the first linear slide 201 can be driven to move left and right. Under the sliding cooperation of the supporting sleeve 203 and the supporting slide rod 202, the mounting plate 103 is driven to slide laterally left and right, so that the end of the crossbar 104 is inserted into the appropriate position in the exhaust pipe, and the first signal transceiver 105 and the second signal transceiver 106 are inserted into the interior of the exhaust pipe and moved to the appropriate detection position.
[0029] Then, controller 107 controls the first transceiver 105 and the second transceiver 106 to work simultaneously. The first transceiver 105 transmits a signal (such as laser or ultrasonic wave) to the inner wall of the top of the exhaust pipe. The signal is reflected back after hitting the inner wall of the top of the exhaust pipe and is received by the first transceiver 105. The second transceiver 106 transmits a signal (such as laser or ultrasonic wave) to the inner wall of the bottom of the exhaust pipe. The signal is reflected back after hitting the inner wall of the bottom of the exhaust pipe and is received by the second transceiver 106. Controller 107 determines the timing of the transmission and reception of the signals by the first transceiver 105 based on the time difference or phase difference between the transmission and reception of the signals by the first transceiver 105. The inner diameter R1 between the first transceiver 105 and the top inner wall of the exhaust pipe is calculated based on the phase difference. The inner diameter R2 between the second transceiver 106 and the bottom inner wall of the exhaust pipe is calculated based on the time difference or phase difference between the transmitted and received signals. The distance D between the first transceiver 105 and the second transceiver 106 is added to obtain the inner diameter R of the exhaust pipe, which is calculated as R = R1 + R2 + D. The measurement result is then transmitted to the display 108. The user can view the inner diameter data of the exhaust pipe in real time through the display 108 to complete the measurement process.
[0030] Then the slide of the first linear slide 201 can be driven to move the crossbar 104, the first signal transceiver 105 and the second signal transceiver 106 out of the exhaust pipe and reset. After that, the exhaust pipe can be removed to complete one test.
[0031] Since the technical solution of this application is to obtain the inner diameter of the exhaust pipe by summing the inner diameter R1 between the first transceiver 105 and the top inner wall of the exhaust pipe, the inner diameter R2 between the second transceiver 106 and the bottom inner wall of the exhaust pipe, and the distance D between the first transceiver 105 and the second transceiver 106, there is no need to make the crossbar 104, the first transceiver 105 and the second transceiver 106 have a special positional relationship with the exhaust pipe. It is only necessary to make the crossbar 104, the first transceiver 105 and the second transceiver 106 able to be inserted into the exhaust pipe.
[0032] According to another embodiment of the present invention, such as Figure 1 As shown, an extension plate 402 is also fixedly connected to the bottom side of the support leg 401. Anchor bolts 403 for connecting to the ground are also provided on the extension plate 402. A threaded fixing cylinder that can be screwed into the anchor bolts 403 is provided in the ground. As long as the anchor bolts 403 pass through the extension plate 402 and are screwed into the threaded fixing cylinder, a stable connection between the device and the ground can be achieved.
[0033] The above are preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A device for detecting the size of an automobile exhaust pipe, comprising a base (101), characterized in that: A vertical plate (102) is provided on one side of the base (101), and a fixing module is provided on the vertical plate (102). A mounting plate (103) located at the side end of the vertical plate (102) is also slidably provided on the base (101). A mounting block (110) is vertically slidably provided on the mounting plate (103). A crossbar (104) is provided on the mounting block (110). A first signal transceiver (105) is provided at the top of the crossbar (104), and a second signal transceiver (106) is provided at the bottom of the crossbar (104). A controller (107) electrically connected to the first signal transceiver (105) and the second signal transceiver (106) and a display (108) electrically connected to the controller (107) are also provided on the mounting block (110).
2. The automobile exhaust pipe size detection device as described in claim 1, characterized in that: A first linear slide (201) is horizontally arranged on the base (101), and the mounting plate (103) is connected to the slide of the first linear slide (201). A support slide rod (202) located at the side end of the first linear slide (201) is also provided on the base (101), and a support sleeve (203) slidably connected to the support slide rod (202) is also provided on the mounting plate (103).
3. The vehicle exhaust pipe size detection device as described in claim 2, characterized in that: The mounting plate (103) is vertically provided with a second linear slide (301), and the crossbar (104) is connected to the slide seat of the second linear slide (301). The mounting plate (103) is provided with a connecting groove (302), and the crossbar (104) is also provided with a connecting slider (303) that is slidably connected to the connecting groove (302).
4. The automobile exhaust pipe size detection device as described in claim 3, characterized in that: The cross-sections of the sliding hole of the connecting groove (302) and the connecting slider (303) are both T-shaped.
5. The automobile exhaust pipe size detection device as described in claim 4, characterized in that: The base (101) is also provided with a support leg (401) at its bottom.
6. The automobile exhaust pipe size detection device as described in claim 5, characterized in that: The bottom side of the support leg (401) is also provided with an extension plate (402), and the extension plate (402) is also provided with anchor bolts (403) for connecting to the ground.
7. The automobile exhaust pipe size detection device as described in claim 6, characterized in that: The fixing module is a three-jaw chuck (109).