Automobile exhaust pipe detection air tightness gauge

Abstract

The utility model relates to automobile parts detection technical field, concretely relates to a kind of automobile exhaust pipe detection air tightness testing fixture, including pedestal and self-adapting type air tightness detection component, self-adapting type air tightness detection component includes support frame, mounting ring, gas transmission machine and stand, support frame is detachably connected with pedestal, and located the upper center of pedestal, mounting ring is slidably connected with support frame, and located the inside upper of support frame, and mounting ring is half circular ring shape setting, gas transmission machine is detachably connected with pedestal, and located the upper side of pedestal, and gas transmission machine is set in the side of support frame, stand is fixedly connected with pedestal, and located the upper side of pedestal away from gas transmission machine, and stand is set in the side of support frame away from gas transmission machine, by additionally adding self-adapting air tightness detection component, thus effectively solve the problem that the structure of existing air pressure detection device is relatively single, different specifications and shape exhaust pipe cannot be accurately sealed and detected, and the commonality is poor.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, and in particular to a testing tool for the airtightness of automotive exhaust pipes. Background Technology

[0002] The exhaust pipe, installed between the engine exhaust manifold and the muffler, provides a flexible connection to the entire exhaust system. This reduces vibration and noise, facilitates installation, and extends the lifespan of the exhaust muffler system. Since the exhaust pipe is installed and fixed by welding during processing, it is usually necessary to perform an airtightness test after processing. Although the technology can perform airtightness testing, the existing technology has the problem that it is not easy to intuitively express the test results during the airtightness testing process of the exhaust pipe.

[0003] In the prior art, patent number (CN202121159142.4) mentions a gas tightness testing tool for automobile exhaust pipes, including a base plate and a contouring structure. The contouring structure is installed at the center of the upper rear side of the base plate, and the exhaust pipe is attached to the front side of the outer wall of the contouring structure. Pneumatic contouring telescopic mechanisms are set on both sides of the exhaust pipe, and sealing clamps are installed at the ends of the pneumatic contouring telescopic mechanisms. Its structure is scientific and reasonable, and it is safe and convenient to use. Through the cooperation between the base plate, the contouring structure, the pneumatic contouring telescopic mechanism, the sealing clamps, the handle, and the exhaust pipe, the air pressure at the sealing clamp changes. At this time, it can be observed whether the pneumatic contouring telescopic mechanism on the other side changes accordingly. If the pneumatic contouring telescopic mechanisms on both sides can move synchronously, the air tightness of the exhaust pipe can be guaranteed to be good, avoiding the problem that the test results are not easy to express intuitively in the existing exhaust pipe gas tightness testing process.

[0004] A pneumatic contour telescopic mechanism has been added to the existing technology, which effectively solves the problem that the test results of the exhaust pipe are not easy to express intuitively during the air tightness test. However, the existing air pressure testing device has a relatively simple structure and cannot accurately seal and test exhaust pipes of different specifications and shapes, resulting in poor versatility. Utility Model Content

[0005] The purpose of this invention is to provide an airtightness testing tool for automobile exhaust pipes, which solves the problem that existing air pressure testing devices have a relatively simple structure, cannot accurately seal and test exhaust pipes of different specifications and shapes, and have poor versatility.

[0006] To achieve the above objectives, this utility model employs an airtightness testing fixture for automotive exhaust pipes, comprising a base and an adaptive airtightness testing component. The adaptive airtightness testing component includes a support frame, a mounting ring, an air pump, and a column. The support frame is detachably connected to the base and is located at the upper center of the base. The mounting ring is slidably connected to the support frame and is located inside the upper part of the support frame, and the mounting ring is semi-circular. The air pump is detachably connected to the base and is located on one side of the base, and the air pump is disposed on one side of the support frame. The column is fixedly connected to the base and is located on the upper side of the base away from the air pump, and the column is disposed on the side of the support frame away from the air pump.

[0007] The extraction pipe is detachably connected to the gas conveyor and is located at the center of the gas conveyor on the side away from the support frame. The transmission pipe is fixedly connected to the gas conveyor and is located at the center of the gas conveyor on the side closer to the support frame. The transmission pipe is located on one side of the mounting ring.

[0008] The connecting pipe is detachably connected to the column and is located at the center of the column on the side near the support frame. The connecting pipe is disposed on one side of the mounting ring, and the sealing ring is slidably connected to the connecting pipe and is located on the outer surface of the connecting pipe.

[0009] The detection box is located on one side above the base and also on one side of the support frame. The detection box is perpendicular to the support frame. One end of the detection box is detachably connected to the gas delivery unit and is located on one side of the gas delivery unit. One end of the detection box is perpendicular to both the extraction pipe and the transmission pipe. The other end of the detection box passes through the column and is detachably connected to the connecting pipe. The fault is located on the side of the connecting pipe away from the support frame. The air pressure extension pipe is detachably connected to the detection box and is located on the inner side of the detection box near the column.

[0010] The control button is detachably connected to the gas delivery unit and is located on the side of the gas delivery unit away from the detection box. The indicator light is detachably connected to the gas delivery unit and is located at the center above the gas delivery unit. The display screen is fixedly connected to the gas delivery unit and is located above the gas delivery unit. The display screen is positioned between the control button and the indicator light.

[0011] This utility model discloses an airtightness testing fixture for automotive exhaust pipes, comprising a base and an adaptive airtightness testing component. The adaptive airtightness testing component includes a support frame, a mounting ring, an air supply unit, and a column. The support frame is detachably connected to the base and is located at the upper center of the base. The mounting ring is slidably connected to the support frame and is located inside the upper part of the support frame, and the mounting ring is semi-circular. The air supply unit is detachably connected to the base and is located on one side of the base, and is positioned on one side of the support frame. The column is fixedly connected to the base and is located on the upper side of the base away from the air supply unit, and is positioned on the side of the support frame away from the air supply unit. By adding the adaptive airtightness testing component, the problem of existing air pressure testing devices having a relatively simple structure, being unable to accurately seal and test exhaust pipes of different specifications and shapes, and having poor versatility is effectively solved. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the entire utility model.

[0015] Figure 3 This is a front view of the entire utility model.

[0016] 101-Base, 102-Support frame, 103-Mounting ring, 104-Gas delivery unit, 105-Extraction pipe, 106-Transmission pipe, 107-Column, 108-Connecting pipe, 109-Sealing ring, 110-Detection box, 111-Air pressure extension pipe, 112-Control button, 113-Indicator light, 114-Display screen. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] Please see Figures 1-3 , Figure 1This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a top view of the entire utility model. Figure 3 This is a front view of the entire utility model.

[0019] This utility model provides a gas tightness testing tool for automotive exhaust pipes, including a base 101 and an adaptive gas tightness testing component. The adaptive gas tightness testing component includes a support frame 102, a mounting ring 103, an air supply unit 104, a column 107, an extraction pipe 105, a transmission pipe 106, a connecting pipe 108, a sealing ring 109, a testing box 110, a gas pressure extension pipe 111, a control button 112, an indicator light 113, and a display screen 114. This solution solves the problem that existing gas pressure testing devices have a relatively simple structure, cannot accurately seal and test exhaust pipes of different specifications and shapes, and have poor versatility. It is understood that the aforementioned solution can, during automotive exhaust pipe gas tightness testing, place the device to be tested... The vehicle exhaust pipe to be tested is placed inside the support frame 102. Based on the diameter of the exhaust pipe, the mounting ring 103 is manually slid to ensure tight contact with the upper surface of the exhaust pipe, completing the initial positioning of the exhaust pipe. Next, the sealing ring 109 is pushed to slide along the connecting pipe 108, tightly wrapping around the outer circumference of the exhaust pipe to form a closed testing space. Then, the operator presses the control button 112 to start the gas delivery machine 104. The gas delivery machine 104 draws in outside air through the extraction pipe 105, processes it internally, and then delivers the test gas at a certain pressure to the closed testing space through the transmission pipe 106. At this time, the air pressure inside the testing box 110... The pressure sensor connected to the extension tube 111 monitors the air pressure changes in the detection space in real time and transmits the data to the display screen 114 for display. After the detection gas input is completed, it is maintained for a period of time (this time can be set in the control system according to actual detection needs). If the air pressure value displayed on the display screen 114 drops more than a preset threshold during this period, it indicates that there is an airtightness problem with the exhaust pipe, and the indicator light 113 lights up red, prompting the operator that the exhaust pipe is unqualified. If the air pressure value is within the normal range, it indicates that the exhaust pipe has good airtightness, and the indicator light 113 lights up green, indicating that the exhaust pipe has passed the test. After the test is completed, press the control button 112 again to stop. The gas delivery unit 104 operates, and then the sealing ring 109 slides open along the connecting pipe 108 to remove the tested exhaust pipe, allowing for the next testing operation. The support frame 102 and the mounting ring 103 work together to achieve precise positioning of exhaust pipes of different specifications. Combined with the self-adaptive sealing function of the sealing ring 109, the precise monitoring of the test box 110 and the pressure sensor, and the intuitive display of the indicator light 113 and the display screen 114, this effectively solves the problems of existing air pressure testing devices, such as simple structure, poor versatility, and inability to accurately seal and test. It greatly improves the efficiency and accuracy of automobile exhaust pipe air tightness testing, and has good practicality and promotional value.

[0020] In this specific embodiment, the support frame 102 is detachably connected to the base 101 and is located at the upper center of the base 101. The mounting ring 103 is slidably connected to the support frame 102 and is located inside the upper part of the support frame 102, and the mounting ring 103 is semi-circular. The gas pump 104 is detachably connected to the base 101 and is located on the upper side of the base 101, and the gas pump 104 is located on one side of the support frame 102. The column 107 is fixedly connected to the base 101 and is located on the upper side of the base 101 away from the gas pump 104, and the column 107 is located on the side of the support frame 102 away from the gas pump 104. When it is necessary to test exhaust pipes of different diameters, the operator can manually adjust the position of the mounting ring 103 according to the actual size of the exhaust pipe so that it is in close contact with the upper surface of the exhaust pipe, thereby achieving preliminary positioning of the exhaust pipe and effectively solving the problem that existing testing devices are difficult to adapt to exhaust pipes of different specifications.

[0021] The extraction pipe 105 is detachably connected to the gas conveyor 104 and is located at the center of the side of the gas conveyor 104 away from the support frame 102. The transmission pipe 106 is fixedly connected to the gas conveyor 104 and is located at the center of the side of the gas conveyor 104 close to the support frame 102. The transmission pipe 106 is located on one side of the mounting ring 103. The extraction pipe 105 is detachably connected to the gas conveyor 104 via a quick connector and is located at the center of the side of the gas conveyor 104 away from the support frame 102. Its function is to draw outside air into the gas conveyor 104 to provide a gas source for detection. The transmission pipe 106 is fixedly connected to the gas conveyor 104 and is located at the center of the side of the gas conveyor 104 close to the support frame 102. It is located on one side of the mounting ring 103 and is responsible for delivering the detection gas processed by the gas conveyor 104 to the detection area.

[0022] Secondly, the connecting pipe 108 is detachably connected to the column 107 and is located at the center of the side of the column 107 near the support frame 102. The connecting pipe 108 is located on one side of the mounting ring 103. The sealing ring 109 is slidably connected to the connecting pipe 108 and is located on the outer surface of the connecting pipe 108. During testing, the operator pushes the sealing ring 109 to slide along the connecting pipe 108 so that it can tightly wrap around the outer circumference of the exhaust pipe, thereby forming a closed testing space, achieving precise sealing of the exhaust pipe, effectively avoiding gas leakage, and improving the accuracy of the testing results.

[0023] Meanwhile, the detection box 110 is disposed on one side above the base 101, and is also disposed on one side of the support frame 102. The detection box 110 is also perpendicular to the support frame 102. One end of the detection box 110 is detachably connected to the gas conveyor 104 and is located on one side of the gas conveyor 104. One end of the detection box 110 is perpendicular to the extraction pipe 105 and the transmission pipe 106 respectively. The other end of the detection box 110 passes through the column 107 and is detachably connected to the connecting pipe 108, located on the side of the connecting pipe 108 away from the support frame 102. The air pressure extension pipe 111 is detachably connected to the detection box 110 and is located on the inner side of the detection box 110 near the column 107. The air pressure extension pipe 111 is connected to a high-precision pressure sensor for real-time monitoring of air pressure changes in the detection area and transmitting the data to the control system for analysis and processing.

[0024] Additionally, the control button 112 is detachably connected to the gas pump 104 and is located above the gas pump 104 on the side away from the detection box 110. The indicator light 113 is detachably connected to the gas pump 104 and is located at the center above the gas pump 104. The display screen 114 is fixedly connected to the gas pump 104 and is located above the gas pump 104, with the display screen 114 positioned between the control button 112 and the indicator light 113. The operator uses the control button 112 to start and stop the detection program, and to set and adjust detection parameters (such as detection pressure, detection time, etc.). The indicator light 113 is detachably connected to the gas pump 104 and is located at the center above the gas pump 104. The machine 104 is connected by a snap-fit ​​and is located above the center of the gas conveyor 104. It is used to visually display the detection status. For example, when the detection starts, the indicator light 113 lights up blue and remains constantly lit during the detection. When the detection is completed, if the exhaust pipe has good air tightness, the indicator light 113 lights up green; if there is an air tightness problem, it lights up red. The display screen 114 is fixedly connected to the gas conveyor 104 by bolts. It is located above the gas conveyor 104 and between the control button 112 and the indicator light 113. It is used to display various key data during the detection process in real time, such as the current air pressure value, gas flow rate, detection time, etc., so that the operator can keep track of the detection status at any time.

[0025] When using this invention to test the air tightness of a car exhaust pipe, the exhaust pipe to be tested is placed inside the support frame 102. Based on the diameter of the exhaust pipe, the mounting ring 103 is manually slid to ensure tight contact with the upper surface of the exhaust pipe, completing the initial positioning of the exhaust pipe. Next, the sealing ring 109 is pushed to slide along the connecting pipe 108, tightly wrapping the outer circumference of the exhaust pipe to form a closed testing space. Then, the operator presses the control button 112 to start the gas delivery machine 104. The gas delivery machine 104 draws in outside air through the extraction pipe 105, processes it internally, and then delivers a certain pressure of test gas to the closed testing space through the transmission pipe 106. At this time, the pressure sensor connected to the pressure extension pipe 111 inside the testing box 110 monitors the pressure changes in the testing space in real time and transmits the data to the display screen 114 for display. After the test gas input is complete, it is maintained for a period of time (this time can be set in the control system according to actual testing needs). If the pressure changes within this time period, the display... If the air pressure value displayed on screen 114 drops beyond a preset threshold, it indicates an airtightness problem in the exhaust pipe. The indicator light 113 illuminates red, prompting the operator that the exhaust pipe is unqualified. If the air pressure value is within the normal range, it indicates good airtightness of the exhaust pipe. The indicator light 113 illuminates green, indicating that the exhaust pipe has passed the test. After the test is completed, press the control button 112 again to stop the operation of the air pump 104. Then, slide the sealing ring 109 along the connecting pipe 108 to open it and remove the tested exhaust pipe. The next test operation can then be performed. The support frame 102 and the mounting ring 103 work together to achieve precise positioning of exhaust pipes of different specifications. Combined with the self-adaptive sealing function of the sealing ring 109, the precise monitoring of the test box 110 and the pressure sensor, and the intuitive display of the indicator light 113 and the display screen 114, the problem of the existing air pressure testing device being simple in structure, poor in versatility, and unable to accurately seal and test is effectively solved. This greatly improves the efficiency and accuracy of automobile exhaust pipe airtightness testing and has good practicality and promotional value.

[0026] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A gas tightness testing tool for automobile exhaust pipes, comprising a base, characterized in that, It also includes an adaptive airtightness detection component, which includes a support frame, a mounting ring, a gas conveyor, and a column. The support frame is detachably connected to the base and is located at the upper center of the base. The mounting ring is slidably connected to the support frame and is located inside the upper part of the support frame, and the mounting ring is semi-circular. The gas conveyor is detachably connected to the base and is located on one side of the base, and the gas conveyor is located on one side of the support frame. The column is fixedly connected to the base and is located on the upper side of the base away from the gas conveyor, and the column is located on the side of the support frame away from the gas conveyor.

2. The automotive exhaust pipe airtightness testing fixture as described in claim 1, characterized in that, The adaptive airtightness detection component further includes an extraction pipe and a transmission pipe. The extraction pipe is detachably connected to the gas delivery unit and is located at the center of the gas delivery unit on the side away from the support frame. The transmission pipe is fixedly connected to the gas delivery unit and is located at the center of the gas delivery unit on the side closer to the support frame. The transmission pipe is also located on one side of the mounting ring.

3. The automotive exhaust pipe airtightness testing fixture as described in claim 2, characterized in that, The adaptive airtightness detection assembly also includes a connecting pipe and a sealing ring. The connecting pipe is detachably connected to the column and is located at the center of the column on the side near the support frame. The connecting pipe is also located on one side of the mounting ring. The sealing ring is slidably connected to the connecting pipe and is located on the outer surface of the connecting pipe.

4. The automotive exhaust pipe airtightness testing fixture as described in claim 3, characterized in that, The adaptive airtightness detection assembly further includes a detection box and a pressure extension tube. The detection box is located on one side above the base and also on one side of the support frame. The detection box is also perpendicular to the support frame. One end of the detection box is detachably connected to the gas delivery unit and is located on one side of the gas delivery unit. One end of the detection box is perpendicular to both the extraction pipe and the transmission pipe. The other end of the detection box passes through the column and is detachably connected to the connecting pipe. The fault is located on the side of the connecting pipe away from the support frame. The pressure extension tube is detachably connected to the detection box and is located on the inner side of the detection box near the column.

5. The automotive exhaust pipe airtightness testing fixture as described in claim 4, characterized in that, The adaptive airtightness detection component also includes a control button, an indicator light, and a display screen. The control button is detachably connected to the gas delivery unit and is located above the gas delivery unit on the side away from the detection box. The indicator light is detachably connected to the gas delivery unit and is located at the center above the gas delivery unit. The display screen is fixedly connected to the gas delivery unit and is located above the gas delivery unit, with the display screen positioned between the control button and the indicator light.

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