Defect detection device for air spring and detection method thereof

Abstract

The invention discloses a defect detection device for an air spring and a detection method of the defect detection device, which are applied to the technical field of air spring processing, a detection mechanism and a liquid storage assembly can be matched with a visual assembly and a pressure assembly, and liquid for testing and the air spring are temporarily stored through the liquid storage assembly; when the testing mechanism applies pressure to the air spring, the visual assembly is used for collecting images of bubbles generated at the defect position, the pressure assembly is used for monitoring the pressed condition of the air spring, and therefore the pressure assembly can be matched with the visual assembly, due to the different pressed conditions of the air spring, the bubbles generated at the defect position are different, and the air spring defect detection accuracy is improved. The supporting assembly can support the testing mechanism and protect the moving space of the testing mechanism, so that the flexibility of air spring defect air leakage detection is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air spring processing, and in particular relates to a defect detection device for an air spring and a detection method thereof. Background Art

[0002] In fields such as industrial production and transportation, the application of air springs is becoming more and more extensive. However, air springs may have defects such as leakage, surface scratches, and dimensional deviations during the manufacturing process. These defects will seriously affect their performance and service life. Traditional detection methods are inefficient and difficult to guarantee accuracy, and cannot meet the high-precision and high-efficiency production needs. At the same time, with the advancement of automated production, there is an urgent need for a device that can quickly, accurately and automatically detect various defects in air springs. Against this background, the research and development of defect detection devices for air springs has become extremely urgent.

[0003] At present, the Chinese invention with the publication number CN112798243B discloses an air spring aging test device and its working method. The device includes a detection box and a motor. A motor is fixed on one side of the detection box. The output end of the motor passes through the inner wall of the detection box and is rotatably connected to a rotating rod. One end of the rotating rod is fixedly connected to an eccentric wheel. A connecting column is fixedly installed on one side of the eccentric wheel. A moving block is fixedly installed on one end of the connecting column. The outer movability of the moving block is connected to a mounting block. A connecting rod is fixedly installed on one end of the mounting block. A sleeve is fixedly installed on one end of the connecting rod. One end of the sleeve is fixedly connected to a mounting plate. A sealed detection box is fixedly installed on the other side of the interior of the detection box. This invention drives the eccentric wheel and the moving block to vibrate the vibration cylinder by the motor to simulate the vibration effect of the air spring during vehicle driving. A gas leakage sensor is provided in the sealed detection box. When there is gas leakage in the air spring, the aging degree and shock resistance of the air spring can be tested.

[0004] The existing air spring defect detection device and detection method have the following disadvantages when used: when performing defect detection on the air spring, due to the lack of an integrated structure for detecting the influence of temperature environment, air leakage and pressure on the air spring, it is impossible to perform multiple tests on the air spring at the same time, which reduces the flexibility of air spring detection. Summary of the Invention

[0005] The purpose of the present invention is to provide an existing defect detection device and detection method for air springs, which has the advantages that when performing defect detection on air springs, due to the integrated structure of temperature environment influence, air leakage detection and pressure detection on air springs, multiple tests can be performed on the air springs at the same time, thereby improving the flexibility of air spring detection.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A defect detection device for an air spring, comprising a detection mechanism, a testing mechanism and a testing system, wherein the testing mechanism is bolted to the top of the detection mechanism, and the detection mechanism comprises a liquid storage component, a visual component, a pressure component and a support component, wherein the visual component is clamped on the inner side of the liquid storage component, the pressure component is clamped on the bottom of the inner side of the liquid storage component, and the support component is bolted to the top of the liquid storage component, and the testing mechanism comprises a conveying component, a pushing component and a temperature measuring component, wherein the conveying component is bolted to the top of the support component, the pushing component is bolted to the bottom of the conveying component, and the temperature measuring component is bolted to the surface of the pushing component.

[0007] By adopting the above technical solution, by setting up a detection mechanism, a testing mechanism and a testing system, the detection mechanism can perform pressure stress analysis and bubble visual detection on the air spring, the testing mechanism can perform temperature detection and pressure testing on the air spring, and the testing system can control the detection mechanism and the testing mechanism through user operation.

[0008] The present invention is further configured as follows: the liquid storage assembly includes a liquid storage cylinder, a liquid delivery valve and a control panel, the liquid delivery valve is connected to the surface of the liquid storage cylinder, and the control panel is bolted to the surface of the liquid storage cylinder.

[0009] By adopting the above technical solution, by setting up a liquid storage component, the liquid storage cylinder can cooperate with the liquid delivery valve and the control panel. By connecting the liquid delivery valve to an external test liquid delivery device, the liquid delivery valve can deliver the test liquid to the liquid storage cylinder, thereby providing an environment for air spring leakage detection, and the control panel can control the test system.

[0010] The present invention is further configured as follows: the visual component includes a fixed plate, a protective window and a camera, the fixed plate is clamped on the inner side of the liquid storage cylinder, the protective window is fixedly connected to the inner side of the fixed plate, and the camera is bolted to the side of the inner side of the fixed plate close to the protective window.

[0011] By adopting the above technical solution and setting up a visual component, the fixed plate can cooperate with the protective window and the camera. By limiting the camera by the fixed plate and the protective window, the camera can capture images of the position where the air spring generates bubbles in the liquid, thereby detecting air leaks in the air spring.

[0012] The present invention is further configured as follows: the pressure assembly includes a pressure sensor, a conduction rod and a sealing plate, the pressure sensor is clamped at the bottom of the liquid delivery valve, the conduction rod is slidably connected to the input end at the top of the pressure sensor, the sealing plate is bolted to the top of the conduction rod, and the surface of the sealing plate contacts the inner side of the liquid storage cylinder.

[0013] By adopting the above technical solution, through setting up a pressure component, the pressure sensor can cooperate with the conduction rod and the sealing plate. The pressure generated when the air spring is squeezed by the sealing plate can be transmitted to the pressure sensor through the conduction rod, so that the pressure sensor can detect the pressure after the air spring is compressed.

[0014] The present invention is further configured as follows: the support assembly includes a support frame, an arc sliding door and an observation window, the support frame is bolted to the top of the liquid storage cylinder, the arc sliding door is slidably connected to the surface of the support frame, and the observation window is fixedly connected to the surface of the support frame and the surface of the arc sliding door respectively.

[0015] By adopting the above technical solution, through the setting of the support assembly, the support frame can cooperate with the arc sliding door and the observation window. Through the support of the arc sliding door and the conveying assembly by the support frame, a sealed space can be formed between the arc sliding door, the conveying assembly and the liquid storage cylinder when the arc sliding door is closed along the support frame, thereby protecting the environment for air spring detection. The observation window makes it convenient for the user to observe the situation when the test mechanism is detecting the air spring.

[0016] The present invention is further configured as follows: the conveying assembly includes a conveying hydraulic rod, a closing plate and a sealing ring, the conveying hydraulic rod is bolted to the top of the inner side of the support frame, the closing plate is bolted to the bottom of the surface of the conveying hydraulic rod, and the sealing ring is bolted to the bottom of the closing plate.

[0017] By adopting the above technical solution, by setting up a conveying assembly, the conveying hydraulic rod can cooperate with the closing plate and the sealing ring. When the closing plate is driven by the conveying hydraulic rod to contact the sealing ring with the liquid storage cylinder, the closing plate and the sealing ring can form a closed environment with the liquid storage cylinder, thereby preventing the liquid in the liquid storage cylinder from accidentally flowing out.

[0018] The present invention is further configured as follows: the pushing assembly includes a pushing hydraulic rod, a contact plate and a positioning frame, the pushing hydraulic rod is bolted to the bottom of the conveying hydraulic rod, the contact plate is bolted to the bottom of the pushing hydraulic rod, and the positioning frame is fixedly connected to the surface of the pushing hydraulic rod.

[0019] By adopting the above technical solution, a pushing component is set up, and the hydraulic rod can cooperate with the contact plate and the positioning frame. By pushing the hydraulic rod to drive the contact plate, the contact plate can be squeezed against the air spring to be tested, so that the air spring can be deformed due to pressure, and the air in the air spring can be discharged through the defect, thereby facilitating the detection of defects in the air spring.

[0020] The present invention is further configured as follows: the temperature measuring component includes a heater, a thermal conductive ring and a temperature detector, the heater is clamped on the surface of the positioning frame, the thermal conductive ring is bolted to the surface of the heater, and the temperature detector is bolted to the bottom of the thermal conductive ring.

[0021] By adopting the above technical solution, by setting up a temperature measuring component, the heater can cooperate with the thermal conductive ring and the thermometer. The thermal conductive ring can be heated by the heater, and the liquid in the liquid storage cylinder can be heated, thereby changing the temperature environment around the air spring, and further improving the effect of detecting air leakage at defects in the air spring in different environments. The thermometer can monitor the temperature in the liquid in real time, so that the leakage condition at the defective part of the air spring can be monitored in real time as the temperature changes.

[0022] The present invention is further configured as follows: the test system includes a control center, a pressure detection module, a temperature control module, a visual module and a comparison module, the comparison module is unidirectionally electrically connected to the control center, the pressure detection module is unidirectionally electrically connected to the comparison module, the temperature control module is unidirectionally electrically connected to the comparison module, the visual module is unidirectionally electrically connected to the comparison module, and the test system is unidirectionally electrically connected to a power supply module.

[0023] By adopting the above technical solution, by setting up a temperature measuring component, the heater can cooperate with the thermal conductive ring and the thermometer. The thermal conductive ring can be heated by the heater, and the liquid in the liquid storage cylinder can be heated, thereby changing the temperature environment around the air spring, and further improving the effect of detecting air leakage at defects in the air spring in different environments. The thermometer can monitor the temperature in the liquid in real time, so that the leakage condition at the defective part of the air spring can be monitored in real time as the temperature changes.

[0024] A method for detecting a defect detection device for an air spring, comprising the following steps:

[0025] S1. Pressure and bubble detection: First, the test liquid is loaded into the liquid storage cylinder through the liquid feeding valve. The air spring to be tested is then placed in the liquid storage cylinder. The arc sliding door is closed, and the detection mechanism is powered on and started. The user then operates the test system through the control panel. The test system controls the test mechanism to compress the air spring. When the air spring is compressed, it presses the sealing plate downward. The sealing plate drives the transmission rod to transmit the pressure to the pressure sensor. The pressure sensor transmits the pressure information to the control panel. The camera then captures an image of the bubbles generated at the defective part of the air spring when it is compressed. The image information can then be transmitted to the control panel. The user can then observe the control panel.

[0026] S2. Apply pressure and monitor temperature: First, power on and start the test mechanism. The hydraulic rod will then drive the closing plate and the sealing ring downward until the closing plate fits into the test mechanism. Pushing the hydraulic rod will drive the contact plate to press the air spring downward. When the temperature in the liquid needs to be changed, the heater will transfer the heat to the thermal ring, and the thermal ring will transfer the heat to the liquid, thereby changing the temperature of the liquid. The thermometer will monitor the temperature and transmit the monitored data to the test system.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By setting up a detection mechanism, the liquid storage component can cooperate with the visual component and the pressure component. The liquid storage component can temporarily store the test liquid and air spring. When the test mechanism applies pressure to the air spring, the visual component can capture images of bubbles generated at the defect, and the pressure component can monitor the pressure of the air spring. This allows the pressure component to cooperate with the visual component. Due to different pressure conditions of the air spring, different bubbles are generated at the defect. The support component can support the test mechanism and protect the activity space of the test mechanism, thereby increasing the flexibility of air spring defect leakage detection.

[0029] 2. By setting up a testing mechanism and a testing system, the conveying component can cooperate with the pushing component to squeeze the air spring, thereby allowing air to leak from the defects of the air spring. The temperature measuring component can change the temperature environment around the air spring, thereby changing the air leakage condition of the defects of the air spring under different temperature environments. The testing system can facilitate the user to control the testing mechanism and the detection mechanism, thereby improving the flexibility of air spring defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic structural diagram of the detection mechanism of the present invention;

[0032] Figure 3 It is a schematic structural diagram of the liquid storage component of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the visual component and the pressure component of the present invention;

[0034] Figure 5 It is a schematic structural diagram of the support assembly of the present invention;

[0035] Figure 6 It is a schematic structural diagram of the testing mechanism of the present invention;

[0036] Figure 7 It is a schematic structural diagram of the conveying assembly of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the pushing component of the present invention;

[0038] Figure 9 It is a schematic structural diagram of the temperature measurement component of the present invention;

[0039] Figure 10 is a schematic diagram of a test system of the present invention;

[0040] Figure 11 It is a schematic diagram of the detection method of the present invention.

[0041] Reference numerals: 1. Detection mechanism; 101. Liquid storage assembly; 1011. Liquid storage cylinder; 1012. Liquid delivery valve; 1013. Control panel; 102. Visual assembly; 1021. Fixing plate; 1022. Protective window; 1023. Camera; 103. Pressure assembly; 1031. Pressure sensor; 1032. Conducting rod; 1033. Sealing plate; 104. Support assembly; 1041. Support frame; 1042. Arc sliding door; 1043. Observation window; 2. Testing mechanism; 20 1. Conveying assembly; 2011. Conveying hydraulic rod; 2012. Closing plate; 2013. Sealing ring; 202. Pushing assembly; 2021. Pushing hydraulic rod; 2022. Contact plate; 2023. Positioning frame; 203. Temperature measuring assembly; 2031. Heater; 2032. Thermal conductive ring; 2033. Thermometer; 3. Testing system; 301. Control center; 302. Pressure inspection module; 303. Temperature control module; 304. Vision module; 305. Comparison module; 306. Power supply module. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings.

[0043] Example 1:

[0044] refer to Figure 1-5A defect detection device for an air spring includes a detection mechanism 1 and a test mechanism 2. The detection mechanism 1 includes a liquid storage component 101, a visual component 102, a pressure component 103 and a support component 104. The visual component 102 is clamped on the inner side of the liquid storage component 101, the pressure component 103 is clamped on the bottom of the inner side of the liquid storage component 101, and the support component 104 is bolted on the top of the liquid storage component 101. By setting the detection mechanism 1, the liquid storage component 101 can cooperate with the visual component 102 and the pressure component 103, and the test liquid and The temporary storage of the air spring allows the visual component 102 to capture images of bubbles generated at the defect when the test mechanism 2 applies pressure to the air spring, and the pressure component 103 to monitor the situation when the air spring is pressurized, so that the pressure component 103 can cooperate with the visual component 102. Due to the different pressure conditions of the air spring, the bubbles generated at the defect are different. The support component 104 can support the test mechanism 2 and protect the activity space of the test mechanism 2, thereby increasing the flexibility of detecting air spring defects and leakage.

[0045] like Figure 3 As shown, the liquid storage component 101 includes a liquid storage cylinder 1011, a liquid delivery valve 1012 and a control panel 1013. The liquid delivery valve 1012 is connected to the surface of the liquid storage cylinder 1011, and the control panel 1013 is bolted to the surface of the liquid storage cylinder 1011. By setting the liquid storage component 101, the liquid storage cylinder 1011 can cooperate with the liquid delivery valve 1012 and the control panel 1013. The liquid delivery valve 1012 is connected to an external test liquid delivery device, and the liquid delivery valve 1012 can deliver the test liquid to the liquid storage cylinder 1011, thereby providing an environment for air spring leakage detection. The control panel 1013 can control the test system 3.

[0046] like Figure 4 As shown, the visual component 102 includes a fixed plate 1021, a protective window 1022 and a camera 1023. The fixed plate 1021 is clamped on the inner side of the liquid storage cylinder 1011, the protective window 1022 is fixedly connected to the inner side of the fixed plate 1021, and the camera 1023 is bolted to the inner side of the fixed plate 1021 close to the protective window 1022. By setting the visual component 102, the fixed plate 1021 can cooperate with the protective window 1022 and the camera 1023. By limiting the camera 1023 by the fixed plate 1021 and the protective window 1022, the camera 1023 can capture images of the position where the air spring generates bubbles in the liquid, thereby detecting air leaks in the air spring.

[0047] like Figure 4As shown, the pressure assembly 103 includes a pressure sensor 1031, a conduction rod 1032 and a sealing plate 1033. The pressure sensor 1031 is clamped on the bottom of the liquid delivery valve 1012, and the conduction rod 1032 is slidably connected to the input end at the top of the pressure sensor 1031. The sealing plate 1033 is bolted to the top of the conduction rod 1032. The surface of the sealing plate 1033 is in contact with the inner side of the liquid storage cylinder 1011. By setting the pressure assembly 103, the pressure sensor 1031 can cooperate with the conduction rod 1032 and the sealing plate 1033. The pressure generated when the air spring is squeezed can be transmitted to the pressure sensor 1031 through the conduction rod 1032, so that the pressure sensor 1031 can detect the pressure after the air spring is compressed.

[0048] like Figure 5 As shown, the support assembly 104 includes a support frame 1041, an arc sliding door 1042 and an observation window 1043. The support frame 1041 is bolted to the top of the liquid storage cylinder 1011, the arc sliding door 1042 is slidably connected to the surface of the support frame 1041, and the observation window 1043 is fixedly connected to the surface of the support frame 1041 and the surface of the arc sliding door 1042, respectively. By setting the support assembly 104, the support frame 1041 can cooperate with the arc sliding door 1042 and the observation window 1043. The support of the arc sliding door 1042 and the conveying assembly 201 by the support frame 1041 can form a sealed space between the arc sliding door 1042 and the conveying assembly 201 when the arc sliding door 1042 is closed along the support frame 1041, thereby protecting the environment for air spring detection. The observation window 1043 can facilitate the user to observe the situation of the test mechanism 2 when detecting the air spring.

[0049] Brief description of the usage process: First, the detection liquid is loaded into the liquid storage cylinder 1011 through the liquid delivery valve 1012, and then the air spring to be tested is placed in the liquid storage cylinder 1011, the arc sliding door 1042 is closed, and then the detection mechanism 1 is powered on and started. After that, the user operates the test system 3 by controlling the control panel 1013, and the test system 3 will control the test mechanism 2 to squeeze the air spring. When the air spring is squeezed, it will press the sealing plate 1033 downward, and the sealing plate 1033 will drive the conduction rod 1032 to transmit the pressure to the pressure sensor 1031, and the pressure sensor 1031 will transmit the pressure information to the control panel 1013, and then the camera 1023 will capture the image of the bubbles generated at the defect when the air spring is compressed, so that the image information can be transmitted to the control panel 1013, and then the user can observe the control panel 1013.

[0050] Example 2:

[0051] refer to Figure 6-10, a defect detection device for an air spring includes a testing mechanism 2 and a testing system 3. The testing mechanism 2 is bolted to the top of the testing mechanism 1. The testing mechanism 2 includes a conveying component 201, a pushing component 202 and a temperature measuring component 203. The conveying component 201 is bolted to the top of the supporting component 104, the pushing component 202 is bolted to the bottom of the conveying component 201, and the temperature measuring component 203 is bolted to the surface of the pushing component 202. By setting the testing mechanism 2 and the testing system 3, the conveying component 201 can cooperate with the pushing component 202 to squeeze the air spring, thereby allowing the defective part of the air spring to leak. The temperature measuring component 203 can change the temperature environment around the air spring, thereby changing the leakage condition of the defective part of the air spring under different temperature environments. The testing system 3 can facilitate the user to control the testing mechanism 2 and the testing mechanism 1, thereby improving the flexibility in detecting air spring defects.

[0052] like Figure 7 As shown, the conveying component 201 includes a conveying hydraulic rod 2011, a closing plate 2012 and a sealing ring 2013. The conveying hydraulic rod 2011 is bolted to the top of the inner side of the support frame 1041, the closing plate 2012 is bolted to the bottom of the surface of the conveying hydraulic rod 2011, and the sealing ring 2013 is bolted to the bottom of the closing plate 2012. By setting the conveying component 201, the conveying hydraulic rod 2011 can cooperate with the closing plate 2012 and the sealing ring 2013. When the conveying hydraulic rod 2011 drives the closing plate 2012 to contact the sealing ring 2013 with the liquid storage cylinder 1011, the closing plate 2012 and the sealing ring 2013 can form a closed environment with the liquid storage cylinder 1011, thereby preventing the liquid in the liquid storage cylinder 1011 from accidentally flowing out.

[0053] like Figure 8 As shown, the pushing component 202 includes a pushing hydraulic rod 2021, a contact plate 2022 and a positioning frame 2023. The pushing hydraulic rod 2021 is bolted to the bottom of the conveying hydraulic rod 2011, the contact plate 2022 is bolted to the bottom of the pushing hydraulic rod 2021, and the positioning frame 2023 is fixedly connected to the surface of the pushing hydraulic rod 2021. By setting the pushing component 202, the pushing hydraulic rod 2021 can cooperate with the contact plate 2022 and the positioning frame 2023. By pushing the contact plate 2022 through the pushing hydraulic rod 2021, the contact plate 2022 can be pushed, so that the contact plate 2022 can squeeze the air spring to be tested, so that the air spring can be deformed due to pressure, and the air in the air spring can be discharged through the defect, thereby facilitating the detection of the defect of the air spring.

[0054] like Figure 9As shown, the temperature measuring component 203 includes a heater 2031, a thermally conductive ring 2032 and a thermometer 2033. The heater 2031 is clamped on the surface of the positioning frame 2023, the thermally conductive ring 2032 is bolted to the surface of the heater 2031, and the thermometer 2033 is bolted to the bottom of the thermally conductive ring 2032. By setting the temperature measuring component 203, the heater 2031 can cooperate with the thermally conductive ring 2032 and the thermometer 2033. The thermally conductive ring 2032 is heated by the heater 2031, and the liquid in the liquid storage cylinder 1011 can be heated, thereby changing the temperature environment around the air spring, and further improving the effect of detecting leakage at defects of the air spring in different environments. The thermometer 2033 can monitor the temperature in the liquid in real time, so that the leakage condition at the defect of the air spring can be monitored in real time as the temperature changes.

[0055] like Figure 10 As shown, the test system 3 includes a control center 301, a pressure detection module 302, a temperature control module 303, a vision module 304 and a comparison module 305. The comparison module 305 is unidirectionally electrically connected to the control center 301, the pressure detection module 302 is unidirectionally electrically connected to the comparison module 305, the temperature control module 303 is unidirectionally electrically connected to the comparison module 305, the vision module 304 is unidirectionally electrically connected to the comparison module 305, and the test system 3 is unidirectionally electrically connected to the power supply module 306. By setting the temperature measuring component 203, the heater 2031 can cooperate with the thermal conductive ring 2032 and the thermometer 2033. The thermal conductive ring 2032 is heated by the heater 2031, and the liquid in the liquid storage cylinder 1011 can be heated, thereby changing the temperature environment around the air spring, and further improving the effect of air leakage detection at defects in the air spring in different environments. The thermometer 2033 can monitor the temperature in the liquid in real time, so that the leakage condition at the defect of the air spring can be monitored in real time as the temperature changes.

[0056] Brief description of the usage process: First, power on and start the test mechanism 2, then the hydraulic rod 2011 will drive the closing plate 2012 and the sealing ring 2013 to move downward until the closing plate 2012 is in contact with the detection mechanism 1, and then push the hydraulic rod 2021 to drive the contact plate 2022 to press the air spring downward. Then, when the temperature in the liquid needs to be changed, the heater 2031 will transfer heat to the heat-conducting ring 2032, and the heat-conducting ring 2032 will transfer heat to the liquid, thereby changing the temperature of the liquid. The thermometer 2033 will monitor the temperature and transmit the monitored data to the test system 3.

[0057] like Figure 11 As shown, the detection method of the above-mentioned defect detection device for air springs is applied, and the specific steps are as follows:

[0058] S1. Pressure detection and bubble detection: First, the detection liquid is loaded into the liquid storage cylinder 1011 through the liquid feeding valve 1012, and then the air spring to be tested is placed in the liquid storage cylinder 1011, the arc sliding door 1042 is closed, and then the detection mechanism 1 is powered on and started. After that, the user operates the test system 3 by controlling the control panel 1013, and the test system 3 will control the test mechanism 2 to squeeze the air spring. When the air spring is squeezed, it will press the sealing plate 1033 downward, and the sealing plate 1033 will drive the transmission rod 1032 to transmit the pressure to the pressure sensor 1031, and the pressure sensor 1031 will transmit the pressure information to the control panel 1013, and then the camera 1023 will capture an image of the bubbles generated at the defect when the air spring is compressed, so that the image information can be transmitted to the control panel 1013, and then the user can observe the control panel 1013;

[0059] S2. Apply pressure and monitor temperature: First, power on and start the test mechanism 2, then the hydraulic rod 2011 will drive the closing plate 2012 and the sealing ring 2013 to move downward until the closing plate 2012 is in contact with the detection mechanism 1, and then push the hydraulic rod 2021 to drive the contact plate 2022 to press the air spring downward. Then, when the temperature in the liquid needs to be changed, the heater 2031 will transfer heat to the thermal ring 2032, and the thermal ring 2032 will transfer heat to the liquid, thereby changing the temperature of the liquid. The thermometer 2033 will monitor the temperature and transmit the monitored data to the test system 3.

[0060] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A defect detection device for an air spring, comprising a detection mechanism (1), a test mechanism (2) and a test system (3), characterized in that: The testing mechanism (2) is bolted to the top of the testing mechanism (1); the testing mechanism (1) comprises a liquid storage component (101), a visual component (102), a pressure component (103) and a support component (104); the visual component (102) is clamped on the inner side of the liquid storage component (101); the pressure component (103) is clamped on the bottom of the inner side of the liquid storage component (101); the support component (104) is bolted to the top of the liquid storage component (101); the testing mechanism (2) comprises a conveying component (201), a pushing component (202) and a temperature measuring component (203); the conveying component (201) is bolted to the top of the support component (104); the pushing component (202) is bolted to the bottom of the conveying component (201); and the temperature measuring component (203) is bolted to the surface of the pushing component (202).

2. The defect detection device for air spring according to claim 1, characterized in that: The liquid storage assembly (101) comprises a liquid storage cylinder (1011), a liquid delivery valve (1012) and a control panel (1013); the liquid delivery valve (1012) is connected to the surface of the liquid storage cylinder (1011), and the control panel (1013) is bolted to the surface of the liquid storage cylinder (1011).

3. The defect detection device for air spring according to claim 2, characterized in that: The visual component (102) comprises a fixing plate (1021), a protective window (1022) and a camera (1023); the fixing plate (1021) is snap-connected to the inner side of the liquid storage cylinder (1011); the protective window (1022) is fixedly connected to the inner side of the fixing plate (1021); and the camera (1023) is bolted to the inner side of the fixing plate (1021) close to the protective window (1022).

4. The defect detection device for air spring according to claim 3, characterized in that: The pressure assembly (103) comprises a pressure sensor (1031), a transmission rod (1032) and a sealing plate (1033); the pressure sensor (1031) is clamped at the bottom of the liquid delivery valve (1012); the transmission rod (1032) is slidably connected to the input end at the top of the pressure sensor (1031); the sealing plate (1033) is bolted to the top of the transmission rod (1032); and the surface of the sealing plate (1033) is in contact with the inner side of the liquid storage cylinder (1011).

5. The defect detection device for air spring according to claim 2, characterized in that: The support assembly (104) comprises a support frame (1041), an arc sliding door (1042) and an observation window (1043); the support frame (1041) is bolted to the top of the liquid storage cylinder (1011); the arc sliding door (1042) is slidably connected to the surface of the support frame (1041); and the observation window (1043) is fixedly connected to the surface of the support frame (1041) and the surface of the arc sliding door (1042), respectively.

6. The defect detection device for air spring according to claim 5, characterized in that: The conveying assembly (201) comprises a conveying hydraulic rod (2011), a closing plate (2012) and a sealing ring (2013); the conveying hydraulic rod (2011) is bolted to the top of the inner side of the support frame (1041); the closing plate (2012) is bolted to the bottom of the surface of the conveying hydraulic rod (2011); and the sealing ring (2013) is bolted to the bottom of the closing plate (2012).

7. The defect detection device for air spring according to claim 6, characterized in that: The pushing assembly (202) comprises a pushing hydraulic rod (2021), a contact plate (2022) and a positioning frame (2023); the pushing hydraulic rod (2021) is bolted to the bottom of the conveying hydraulic rod (2011); the contact plate (2022) is bolted to the bottom of the pushing hydraulic rod (2021); and the positioning frame (2023) is fixedly connected to the surface of the pushing hydraulic rod (2021).

8. The defect detection device for air spring according to claim 7, characterized in that: The temperature measurement component (203) comprises a heater (2031), a heat-conducting ring (2032) and a temperature detector (2033); the heater (2031) is clamped on the surface of the positioning frame (2023); the heat-conducting ring (2032) is bolted on the surface of the heater (2031); and the temperature detector (2033) is bolted on the bottom of the heat-conducting ring (2032).

9. The defect detection device for air spring according to claim 1, characterized in that: The test system (3) comprises a control center (301), a pressure detection module (302), a temperature control module (303), a visual module (304) and a comparison module (305); the comparison module (305) is unidirectionally electrically connected to the control center (301); the pressure detection module (302) is unidirectionally electrically connected to the comparison module (305); the temperature control module (303) is unidirectionally electrically connected to the comparison module (305); the visual module (304) is unidirectionally electrically connected to the comparison module (305); and the test system (3) is unidirectionally electrically connected to a power supply module (306).

10. A method for detecting a defect detection device for an air spring according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Pressure detection and bubble detection: First, the detection liquid is loaded into the liquid storage cylinder (1011) through the liquid delivery valve (1012), and then the air spring to be detected is placed in the liquid storage cylinder (1011), the arc sliding door (1042) is closed, and then the detection mechanism (1) is powered on and started. Then, the user operates the test system (3) by controlling the control panel (1013), and the test system (3) will control the test mechanism (2) to squeeze the air spring. When the air spring is squeezed, it will press the sealing plate (1033) downward, and the sealing plate (1033) will drive the conduction rod (1032) to transmit the pressure to the pressure sensor (1031), and the pressure sensor (1031) will transmit the pressure information to the control panel (1013), and then the camera (1023) will collect images of bubbles generated at the defective part when the air spring is compressed, so that the image information can be transmitted to the control panel (1013), and then the user can observe the control panel (1013); S2. Applying pressure and monitoring temperature: First, the test mechanism (2) is powered on and started, and then the hydraulic rod (2011) will drive the closing plate (2012) and the sealing ring (2013) to move downward until the closing plate (2012) is in contact with the detection mechanism (1). Then, the hydraulic rod (2021) is pushed to drive the contact plate (2022) to press the air spring downward. Then, when the temperature in the liquid needs to be changed, the heater (2031) will transfer the heat to the heat conductive ring (2032), and the heat conductive ring (2032) will transfer the heat to the liquid, thereby changing the temperature of the liquid. The temperature sensor (2033) will monitor the temperature and transmit the monitored data to the test system (3).

Images