A hydraulic shock absorber air tightness testing device

Abstract

This invention provides a hydraulic shock absorber airtightness testing device, belonging to the technical field of airtightness testing equipment. It includes a main body for the airtightness testing device, on which a support frame is mounted. First positioning components, second positioning components, and third positioning components are mounted on both sides of the support frame. Sealing components are also mounted on both sides of the support frame. By setting up a support limiting mechanism and a collection and shielding mechanism, this invention not only supports and adjusts the position of the foam connecting pipe and the gas connecting pipe, allowing them to flexibly operate on different hydraulic shock absorber components and different testing areas of the hydraulic shock absorber components; the accompanying collection and shielding mechanism can shield and protect the area around the hydraulic shock absorber components during foam leak detection operations, while simultaneously collecting dripping waste foam, effectively reducing on-site pollution.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing equipment, and in particular to an airtightness testing device for a hydraulic shock absorber. Background Technology

[0002] Air tightness testing equipment is a specialized testing instrument that uses a gas medium under set pressure / vacuum conditions to quantitatively detect the leakage of sealed components or cavities and determine whether the sealing performance is qualified. Hydraulic shock absorbers are closed hydraulic damping components, filled with hydraulic oil and a sealed air chamber, relying on a sealed structure to achieve buffering, shock absorption, and stable damping output. To prevent malfunctions such as oil seepage, oil leakage, air intake, pressure loss, and damping attenuation failure during use, the air tightness of the entire cavity, including the shock absorber cylinder, piston rod sealing end cap, welded joints, and oil seal alignment, must be tested before leaving the factory.

[0003] Currently, there are two main structural forms for air tightness testing of hydraulic shock absorbers: single-seal head testing and double-seal head testing. The double-seal head testing equipment uses two seal heads to simultaneously seal two interfaces at the bottom of the shock absorber, allowing direct injection of testing gas into the shock absorber for rapid overall air tightness assessment. However, it can only determine the presence of leaks through overall pressure changes, unable to pinpoint the exact location of the leak or visually mark it, leading to additional steps and low efficiency in subsequent troubleshooting. If the double-seal head test fails, leak detection foam is typically sprayed onto the shock absorber surface manually using a handheld sprayer, and the leak location is determined by observing bubble formation. However, this manual method is cumbersome, inefficient, and prone to overspraying and foam spillage, resulting in reagent waste and on-site contamination. Therefore, this application provides an air tightness testing device for hydraulic shock absorbers to meet this need. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a hydraulic shock absorber air tightness testing device. By setting up a support limiting mechanism and a collection shielding mechanism, it can not only support and adjust the position of the foam connecting pipe and the gas connecting pipe, so that they can flexibly act on different hydraulic shock absorber components and different testing areas of the hydraulic shock absorber components; the matching collection shielding mechanism can shield and protect the area around the hydraulic shock absorber components during foam leak detection operations. Through the above settings, the problems of low efficiency and cumbersome operation of manual operation can be solved.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A hydraulic shock absorber airtightness testing device includes an airtightness testing device body, a support frame mounted on the airtightness testing device body, first positioning components, second positioning components, and third positioning components mounted on both sides of the support frame, and sealing components mounted on both sides of the support frame, with airtightness testing connecting pipes provided on both sides of the sealing components; a foam pressure tank mounted on the top of the support frame, with a foam connecting pipe installed on one side of the foam pressure tank; a gas pressure tank mounted on the top of the support frame, with a gas connecting pipe installed on one side of the gas pressure tank; a support limiting mechanism provided on the support frame, the support limiting mechanism including a mounting frame mounted on the support frame, a first collar and a second collar mounted on the mounting frame, a collection and shielding mechanism including a collection box provided at the bottom of the mounting frame, baffles mounted on the top and bottom of the second positioning components, and a hydraulic shock absorber component mounted on the first positioning component.

[0006] Optionally, the support limiting mechanism further includes a first frame, with connecting blocks fixedly connected to both sides of the first frame, and a second frame fixedly connected to the side of the connecting blocks away from the first frame. The first collars are arranged in pairs, for a total of two sets, with the two sets of first collars respectively located at the two first frames. The two first collars in one set are respectively installed at the bottom of both sides of the first frame. The second collars are arranged in pairs, for a total of two sets, with the two sets of second collars respectively located at the two first frames. The two second collars in one set are respectively installed at the side of one second frame away from the connecting block.

[0007] Optionally, the mounting frame has a first movable groove on both sides that matches the shape of the connecting block, and an electric telescopic rod is installed on the mounting frame, with the top of the electric telescopic rod fixedly connected to the first frame.

[0008] Optionally, the first collar is rotatably connected to the first frame, and the second collar is rotatably connected to the second frame.

[0009] Optionally, the shape of the first collar is adapted to the shape of the foam connecting tube, and the shape of the second collar is adapted to the shape of the gas connecting tube, and the inner walls of both the first collar and the second collar are rough.

[0010] Optionally, the mounting bracket is equipped with a scale, and movable blocks are installed on both sides of the mounting bracket. Each movable block has a recess on both sides and is made of rubber.

[0011] Optionally, a guide rail is installed on the support frame, a drive motor is installed on one side of the guide rail, the mounting bracket is installed at the bottom of the guide rail, the drive motor is used to drive the mounting bracket to move along the guide rail, and a second movable groove is provided on the top of the support frame.

[0012] Optionally, the collection and shielding mechanism further includes a connecting frame, which is integrally formed with the mounting frame, and the collection box is mounted on the connecting frame.

[0013] Optionally, both the foam connecting pipe and the gas connecting pipe have a Y-shaped structure. A foam nozzle is installed at the end of the foam connecting pipe away from the foam storage tank, and a gas nozzle is installed at the end of the gas connecting pipe away from the gas storage tank.

[0014] Optionally, a first solenoid valve is installed on the mounting bracket to control the opening and closing of the foam connecting pipe, and a second solenoid valve is installed on the mounting bracket to control the opening and closing of the gas connecting pipe.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting up a support limiting mechanism and a collection shielding mechanism, not only can the foam connecting pipe and the gas connecting pipe be supported and their positions adjusted, allowing them to flexibly act on different hydraulic shock absorber components and different testing areas of the hydraulic shock absorber components; the matching collection shielding mechanism can shield and protect the area around the hydraulic shock absorber components during foam leak detection operations, while collecting dripping waste foam, effectively reducing on-site pollution. The collected foam is easy to clean up and can also be recycled and reused; in addition, this equipment adopts a dual-station layout, with each station equipped with an independent control system, which can alternately and collaboratively complete the testing operation, effectively improving the overall efficiency of airtightness testing.

[0016] By incorporating a foam storage tank, foam connecting pipe, gas storage tank, and gas connecting pipe within the device, not only can leak detection foam be quickly sprayed to identify leak points when the workpiece fails the airtightness test, but residual foam on the outer wall of the workpiece can also be promptly purged and removed after the leak point is marked, thus balancing the efficiency of leak point identification with the cleanliness of the workpiece during subsequent processing.

[0017] By incorporating a first frame, a first collar, a second collar, and an electric telescopic rod within the device, the working position and angle of the spraying and purging components can be flexibly adjusted to fully cover the entire outer surface of the hydraulic shock absorber components, enabling all-around operation of the workpiece. Furthermore, the device can be coordinated with guide rails and drive motors to flexibly switch working positions, ensuring no blind spots in detection.

[0018] By incorporating a scale and movable block within the device, staff can not only visually observe changes in foam to quickly identify leaks, but also quickly pinpoint and mark leak locations and lock them in place, facilitating fault statistics, workpiece sorting, and rework.

[0019] By incorporating baffles, connecting frames, and collection boxes within the device, the work area can be fully shielded and protected, preventing foam from splashing and contaminating equipment components. It can also collect waste foam liquid in a unified manner, improving the on-site working environment, reducing the difficulty of equipment cleaning, and enabling foam recycling and reuse, making it more energy-efficient and environmentally friendly.

[0020] By adopting a dual-station layout and equipped with an independent control system, not only can the two stations work together to complete the entire set of testing procedures, significantly reducing the waiting time for each procedure and effectively improving the overall efficiency of airtightness testing, but the working area can also be flexibly switched with the guide rail and drive motor, fully adapting to the continuous testing operation mode of the assembly line.

[0021] In summary, this device addresses the shortcomings of existing dual-sealing head airtightness detection equipment, such as cumbersome leak location, tedious manual operation, significant on-site pollution, poor equipment adaptability, and low detection efficiency. It integrates the foam spray leak location mechanism, residual foam cleaning mechanism, and foam collection and protection mechanism into one unit. After completing the sealed airtightness detection of the workpiece and determining the presence of a leak, the integrated adjustable spray structure can precisely spray leak detection foam onto the outer wall of the workpiece, quickly locating and marking the leak location. Simultaneously, the bottom collection and side enclosure structure uniformly collect waste foam, reducing on-site pollution at the source. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0023] Figure 1 A three-dimensional structural diagram of a hydraulic shock absorber airtightness testing device; Figure 2 A three-dimensional enlarged structural diagram of the supporting frame and sealing components assembly; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 A magnified three-dimensional structural diagram of the assembly of the baffle and the second positioning component; Figure 5 A magnified three-dimensional structural diagram of the support frame and the second positioning component assembly; Figure 6 A magnified first-view structural diagram of the assembly of the support frame and sealing components; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 A magnified second-view structural diagram of the assembly of the support frame and sealing components; Figure 9 for Figure 8 Enlarged structural diagram at point C; Figure 10 A first-person perspective magnified structural diagram of the support frame and guide rail assembly; Figure 11 A schematic diagram of the second-view, magnified three-dimensional structure for assembling the support frame and guide rails; Figure 12 A magnified three-dimensional structural diagram of the first frame and connecting blocks being assembled. Figure 13 A three-dimensional enlarged structural diagram of the mounting frame and the second frame assembly; Figure 14 for Figure 13 Enlarged structural diagram at point D.

[0024] Figure label: 1. Main body of the airtightness testing equipment; 2. Support frame; 3. First positioning component; 4. Second positioning component; 5. Third positioning component; 6. Sealing component; 7. Airtightness testing connecting pipe; 8. Hydraulic shock absorber component; 9. Baffle plate; 10. Clearance groove; 11. Mounting frame; 12. Foam pressure tank; 13. Foam connecting pipe; 14. Gas pressure tank; 15. Gas connecting pipe; 16. Guide rail; 17. Drive motor; 18. Foam nozzle; 19. Gas nozzle; 20. First frame; 21. Connecting block; 22. Second frame; 23. First collar; 24. Second collar; 25. First solenoid valve; 26. Second solenoid valve; 27. Scale; 28. Movable block; 29. ​​Recess; 30. Connecting frame; 31. Collection box; 32. Electric telescopic rod; 33. First movable groove; 34. Second movable groove.

[0025] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0026] The air tightness testing device for a hydraulic shock absorber provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0028] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0029] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0030] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0031] like Figure 1 , Figure 2 and Figures 4 to 13As shown, an embodiment of the present invention provides a hydraulic shock absorber airtightness testing device, including an airtightness testing device body 1, a support frame 2 mounted on the airtightness testing device body 1, first positioning components 3 mounted on both sides of the support frame 2, second positioning components 4 mounted on both sides of the support frame 2, third positioning components 5 mounted on both sides of the support frame 2, and sealing components 6 mounted on both sides of the support frame 2, with airtightness testing connecting pipes 7 provided on both sides of the sealing components 6; a foam pressure tank 12 mounted on the top of the support frame 2, a foam connecting pipe 13 mounted on one side of the foam pressure tank 12, a gas pressure tank 14 mounted on the top of the support frame 2, and a gas connecting pipe 15 mounted on one side of the gas pressure tank 14; a support limit is provided on the support frame 2. The positioning mechanism and the supporting limiting mechanism include a mounting frame 11 installed on the support frame 2. A first set of rings 23 and a second set of rings 24 are installed on the mounting frame 11. A collection and shielding mechanism, including a collection box 31, is provided at the bottom of the mounting frame 11. Baffles 9 are installed at both the top and bottom of the second positioning component 4. A hydraulic shock absorber component 8 is provided on the first positioning component 3. The end of the airtightness testing connecting pipe 7 away from the hydraulic shock absorber component 8 is connected to an airtightness testing component. A display screen is mounted on the main body 1 of the airtightness testing equipment. During operation, the hydraulic shock absorber component 8 is initially positioned by the first positioning component 3 and the second positioning component 4, and then further limited by the third positioning component 5, so that the hydraulic shock absorber component 8 is precisely positioned for testing. The device is positioned at the testing station. Then, using the sealing component 6, two openings at the top of the hydraulic shock absorber component 8 are sealed. The airtightness of the hydraulic shock absorber component 8 is then tested via the airtightness testing connector 7. The test data is collected by the main body 1 of the airtightness testing equipment and displayed visually on the screen. The main body 1, support frame 2, first positioning component 3, second positioning component 4, third positioning component 5, sealing component 6, airtightness testing connector 7, airtightness testing connector, and display screen are all existing mature technologies; their specific structures and working principles will not be elaborated here. This equipment can use the foam storage tank 12 in conjunction with the foam connector 13 to spray test foam onto the outer wall of the hydraulic shock absorber component 8 when the airtightness of the component is found to be unqualified. The rapid change in foam morphology allows for quick identification of leak locations, facilitating staff in determining and recording fault locations. After detection and location, residual foam on the outer wall of the hydraulic shock absorber component 8 can be quickly blown away using the gas storage tank 14 and gas connection pipe 15, facilitating subsequent processing. Simultaneously, the equipment's support and limiting mechanism supports and adjusts the position of the foam connection pipe 13 and gas connection pipe 15, allowing them to flexibly operate on different hydraulic shock absorber components 8 and different detection areas of the hydraulic shock absorber component 8. The accompanying collection and shielding mechanism can shield and protect the area surrounding the hydraulic shock absorber component 8 during foam leak detection operations, while simultaneously collecting dripping waste foam, effectively reducing on-site pollution. The collected foam is easy to clean and can also be recycled and reused.Furthermore, this equipment adopts a dual-station layout, with each station equipped with an independent control system, allowing them to work together alternately to complete the testing tasks, effectively improving the overall efficiency of airtightness testing.

[0032] Furthermore, the support frame 2 is provided with an avoidance groove 10 near the collection shielding mechanism. The avoidance groove 10 is used to provide structural avoidance for the collection shielding mechanism. The baffle 9 adopts a wave-shaped structure design and is made of rubber material. The second positioning component 4 can be adjusted on the support frame 2. As the position of the second positioning component 4 changes, the baffle 9 can undergo elastic deformation simultaneously, thereby flexibly adapting to different installation positions and realizing multi-range shielding and protection operations.

[0033] like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figures 9 to 14As shown, the supporting and limiting mechanism also includes a first frame 20, with connecting blocks 21 fixedly connected to both sides of the first frame 20. A second frame 22 is fixedly connected to the side of the connecting blocks 21 away from the first frame 20. Two sets of first collars 23 are arranged in pairs, with each set located at one of the two first frames 20. Two first collars 23 in each set are installed at the bottom of both sides of the first frame 20. Two sets of second collars 24 are also arranged in pairs, with each set located at one of the two first frames 20. Two second collars 24 in each set are installed at the bottom of one of the second frames 22 away from the connecting blocks 21. An electric motor is mounted on the mounting frame 11. The top of the telescopic rod 32 is fixedly connected to the first frame 20. The first collar 23 is rotatably connected to the first frame 20, and the second collar 24 is rotatably connected to the second frame 22. Both sides of the mounting frame 11 have first movable grooves 33 that match the shape of the connecting block 21. A foam nozzle 18 is installed at the end of the foam connecting pipe 13 away from the foam pressure tank 12, and a gas nozzle 19 is installed at the end of the gas connecting pipe 15 away from the gas pressure tank 14. The foam pressure tank 12, foam connecting pipe 13, foam nozzle 18, gas nozzle 19, and electric telescopic rod 32 are all existing mature structures, and their specific structures and working principles will not be elaborated here. The electric telescopic rod 32 can drive the first... A frame 20 slides along the first movable groove 33 to adjust the overall arrangement of the first set of rings 23 and the second set of rings 24, thereby achieving flexible adjustment of the positions of the foam nozzles 18 and the gas nozzles 19. This allows the foam nozzles 18 and the gas nozzles 19 to be precisely aligned with different height positions of the hydraulic shock absorber component 8, enabling full coverage of the hydraulic shock absorber component 8. The rotating connection structure between the first set of rings 23 and the first frame 20, and between the second set of rings 24 and the second frame 22, can be a shaft connection or a combination of a universal ball joint and a universal ball joint, allowing for flexible selection based on the required angle adjustment range. With the help of the rotating connection structure, the foam nozzles arranged on both sides of the mounting frame 11 can be positioned... The gas nozzles 18 and 19 are precisely aligned with the two sides of the hydraulic shock absorber component 8, further achieving all-round coverage of the outer wall of the hydraulic shock absorber component 8. At the same time, this equipment can add an angle locking structure at the rotatable connection position of the first ring 23 and the second ring 24. Optional structures include damping set screws, elastic top ball positioning plates, locking flanges, quick-release locking knobs, and indexing positioning pins. After completing the angle fine adjustment, it can be quickly locked and fixed, effectively preventing angle deviation due to vibration or external force during operation, and ensuring that the spraying and purging operation position is always accurate and stable. The cooperation of the above structures can not only realize the multi-dimensional and multi-directional flexible adjustment of the spraying and purging components, but also greatly improve the accuracy of leak detection and the efficiency of subsequent cleaning.

[0034] Furthermore, the first frame 20, connecting block 21, and second frame 22 are integrally formed. This integral structure offers high overall structural strength and better operational stability, while also facilitating overall manufacturing and on-site assembly. The shape of the first ring 23 matches the shape of the foam connecting pipe 13, ensuring a stable fit and support. The shape of the second ring 24 matches the shape of the gas connecting pipe 15, precisely matching its installation requirements. The inner walls of both the first ring 23 and the second ring 24 are roughened to increase friction on the contact surface, effectively preventing slippage and ensuring a more secure clamping and support. (Mounting bracket 11) The mounting bracket 11 is equipped with a scale 27 and movable blocks 28 on both sides. The staff can use the scale 27 to visually view the location of leaks on the surface of the hydraulic shock absorber component 8. They can also quickly mark the location of leaks by moving the movable blocks 28, so as to quickly record the fault location and facilitate subsequent unified sorting, rework and data statistics. The movable blocks 28 are provided with recesses 29 on both sides. The movable blocks 28 are made of rubber. The recesses 29 press against the side wall of the mounting bracket 11, so that the movable blocks 28 can quickly complete self-locking after adjustment and movement. At the same time, the rubber material has good deformation ability and can adaptively adjust the deformation during movement, making the position adjustment operation smoother and more convenient.

[0035] like Figure 2 , Figure 6 , Figure 10 and Figure 11 As shown, a guide rail 16 is installed on the support frame 2, and a drive motor 17 is installed on one side of the guide rail 16. The mounting frame 11 is installed at the bottom of the guide rail 16. The drive motor 17 is used to drive the mounting frame 11 to move along the guide rail 16. A second movable slot 34 is opened on the top of the support frame 2. The guide rail 16 and the drive motor 17 are both existing mature structures, and their specific structures and working principles will not be described in detail here. The guide rail 16 and the drive motor 17 cooperate with each other to realize the flexible adjustment of the overall position of the mounting frame 11, and drive the various supporting components installed on the mounting frame 11 to move synchronously. It can adapt to the dual-station alternating operation mode of the equipment, thereby flexibly switching the operation area and completing the full set of processes such as foam spraying, leak observation, and residual foam blowing on the workpieces at the two stations in sequence. It fully utilizes the advantages of the dual-station layout, effectively reduces the waiting time of the process, and further improves the smoothness of the overall inspection line and the overall work efficiency.

[0036] like Figure 2 , Figure 3 , Figures 6 to 11 and Figure 13As shown, the collection and shielding mechanism also includes a connecting frame 30, which is integrally formed with the mounting frame 11. This integral structure offers high overall structural strength and better operational stability, while also facilitating overall manufacturing and on-site assembly. The collection box 31 is mounted on the connecting frame 30. Both the foam connecting pipe 13 and the gas connecting pipe 15 are Y-shaped structures. This structure allows for better coordination with the foam nozzles 18 and gas nozzles 19 arranged on both sides to simultaneously apply force to both sides of the hydraulic shock absorber component 8, resulting in a wider operating coverage, more uniform force distribution, and consistent performance. A first solenoid valve 25 is installed on the mounting frame 11 to control the opening and closing of the foam connecting pipe 13. A second solenoid valve 26 is also installed on the mounting frame 11 to control the gas... The switch of the body connecting pipe 15 independently controls the start and stop status of the spraying and purging operations. It can turn the corresponding functional components on or off as needed according to the actual inspection process, making the process switching flexible and controllable. It can accurately complete the foam spraying detection of leaks and clean the residual foam on the workpiece surface in a timely manner as needed, further improving the flexibility and practicality of the equipment inspection operation. In addition, the collection box 31 can collect the foam generated by the spraying operation, effectively preventing the foam from scattering everywhere and causing equipment pollution and a messy on-site environment, reducing the difficulty of equipment cleaning and maintenance. With the corrugated rubber baffle 9 for enclosure and shielding, it prevents the foam from splashing into the mounting holes on the support frame 2. The collected foam can also be centrally processed or recycled for reuse, which is economical, environmentally friendly, and more practical.

[0037] The working principle of the technical solution provided by this invention is as follows: In use, the angles of the foam nozzle 18 and the gas nozzle 19 are adjusted using the rotating shaft or universal ball joint type rotating connection structure between the first ring 23 and the first frame 20, and between the second ring 24 and the second frame 22, so that they accurately fit the working areas on both sides of the hydraulic shock absorber component 8. After the adjustment is completed, the angle locking structure such as damping set screws and indexing positioning pins is used to lock and fix them to prevent angle deviation during operation. At the same time, the installation position of the second positioning component 4 on the support frame 2 is adjusted, which drives the rubber wave-shaped structure baffle 9 to deform elastically and adapt to the shielding and protection range. The overall position of the mounting frame 11 is pre-adjusted with the help of the guide rail 16 and the drive motor 17, matching the double To meet the workstation switching requirements, the foam pressurization tank 12, foam connecting pipe 13 spraying assembly, and gas pressurization tank 14, gas connecting pipe 15 purging assembly were adjusted to standby status. The collection shielding mechanism and foam storage structure collection box 31 were set up, and work protection and waste foam collection were prepared. All mature supporting components, including the main body 1, support frame 2, first positioning component 3, third positioning component 5, sealing component 6, airtightness testing connecting pipe 7, airtightness testing component, and display screen, were in normal standby operation. Then, the hydraulic shock absorber component 8 of the workpiece to be tested was placed in the testing area. The hydraulic shock absorber was first completed by the first positioning component 3 and the second positioning component 4. The shock absorber component 8 is initially positioned, and then the third positioning component 5 performs a secondary positioning of the hydraulic shock absorber component 8, precisely fixing it at the designated testing station and completing the workpiece posture and position calibration. Then, the sealing component 6 is operated to seal the two openings at the top of the hydraulic shock absorber component 8, closing the workpiece testing channel. Subsequently, the airtightness testing device connected to the airtightness testing connecting pipe 7 is activated to conduct airtightness testing on the hydraulic shock absorber component 8. During the testing process, the main body 1 of the airtightness testing equipment collects various test data in real time and transmits it synchronously to the display screen for data visualization, quickly determining whether the workpiece airtightness meets the standard. If the airtightness test determines that the hydraulic shock absorber... If the airtightness of component 8 is not up to standard, the foam storage tank 12 and foam connecting pipe 13 are immediately activated to spray leak detection foam evenly onto the outer wall of the hydraulic shock absorber component 8. The staff uses a ruler 27 to visually observe the changes in the foam morphology on the workpiece surface, quickly locate the leak point, and move the rubber movable block 28 to mark the leak point. The data is recorded by taking pictures and manually recording data for subsequent sorting and rework. During the operation, the collection and shielding mechanism completely shields the area around the hydraulic shock absorber component 8, and the baffle 9 blocks foam from splashing into the mounting holes of the support frame 2. The dripping waste foam is collected in the collection box 31 for centralized storage.After the leak detection marking is completed, the spraying assembly is shut down, and the gas storage tank 14, along with the gas connection pipe 15, is used to thoroughly purge and clean the residual leak detection foam on the outer wall of the hydraulic shock absorber component 8. This quickly removes residual foam from the workpiece surface and collects it in the collection box 31, ensuring workpiece cleanliness and meeting the requirements for subsequent processing. The electric telescopic rod 32 drives the first frame 20 to slide along the first movable groove 33, completing the overall position adjustment of the first and second rings 24. This allows for flexible adjustment of the foam nozzles 18 and gas nozzles 19, precisely aligning them to different heights of the hydraulic shock absorber component 8. The symmetrically arranged foam connection pipes 13 and gas connection pipes 15 on both sides can be used synchronously. Foam is sprayed onto the outer wall of the workpiece to achieve rapid full coverage of the outer surface of the hydraulic shock absorber component 8. The overall position of the mounting frame 11 is adjusted via guide rail 16 and drive motor 17, switching work areas and utilizing a dual-station independent control system to alternately complete the entire process of workpiece positioning and sealing, airtightness testing, foam leak detection, and residual foam purging at both stations, reducing waiting intervals and continuously advancing the production line inspection work. After all workpieces in a batch have been inspected, the entire set of working components for airtightness testing, spraying, purging, and data acquisition is shut down sequentially. Waste leak detection foam stored in collection box 31 is collected and can be disposed of harmlessly or recycled for reuse, reducing operational pollution and saving operating costs.

[0038] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hydraulic shock absorber airtightness testing device, comprising an airtightness testing device body, characterized in that, The airtightness testing equipment has a support frame mounted on its main body. First positioning components, second positioning components, and third positioning components are mounted on both sides of the support frame. Sealing components are mounted on both sides of the support frame, and airtightness testing connection pipes are provided on both sides of each sealing component. A foam pressure tank is mounted on the top of the support frame, with a foam connection pipe installed on one side. A gas pressure tank is also mounted on the top of the support frame, with a gas connection pipe installed on one side. A support limiting mechanism is provided on the support frame, including a mounting bracket mounted on the support frame. A first and second set of rings are mounted on the mounting bracket. A collection and shielding mechanism, including a collection box, is provided at the bottom of the mounting bracket. Baffles are mounted on the top and bottom of the second positioning components. A hydraulic shock absorber component is provided on the first positioning component.

2. The hydraulic shock absorber air tightness testing equipment according to claim 1, characterized in that, The supporting and limiting mechanism also includes a first frame, with connecting blocks fixedly connected to both sides of the first frame. A second frame is fixedly connected to the side of the connecting block away from the first frame. The first collars are arranged in pairs, for a total of two sets. The two sets of first collars are respectively located at the two first frames. The two first collars in one set are respectively installed at the bottom of both sides of the first frame. The second collars are arranged in pairs, for a total of two sets. The two sets of second collars are respectively located at the two first frames. The two second collars in one set are respectively installed at the side of one second frame away from the connecting block.

3. The hydraulic shock absorber air tightness testing equipment according to claim 2, characterized in that, Both sides of the mounting frame are provided with first movable grooves that are adapted to the shape of the connecting block. An electric telescopic rod is installed on the mounting frame, and the top of the electric telescopic rod is fixedly connected to the first frame body.

4. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, The first collar is rotatably connected to the first frame, and the second collar is rotatably connected to the second frame.

5. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, The shape of the first collar is adapted to the shape of the foam connecting tube, and the shape of the second collar is adapted to the shape of the gas connecting tube. The inner walls of both the first collar and the second collar are rough.

6. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, The mounting bracket is equipped with a scale, and movable blocks are installed on both sides of the mounting bracket. Each movable block has a recess on both sides and is made of rubber.

7. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, The support frame is equipped with a guide rail, and a drive motor is installed on one side of the guide rail. The mounting bracket is installed at the bottom of the guide rail, and the drive motor is used to drive the mounting bracket to move along the guide rail. A second movable groove is provided at the top of the support frame.

8. The hydraulic shock absorber air tightness testing equipment according to claim 2, characterized in that, The collection and shielding mechanism also includes a connecting frame, which is integrally formed with the mounting frame, and the collection box is installed on the connecting frame.

9. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, Both the foam connecting pipe and the gas connecting pipe have a Y-shaped structure. A foam nozzle is installed at the end of the foam connecting pipe away from the foam storage tank, and a gas nozzle is installed at the end of the gas connecting pipe away from the gas storage tank.

10. The hydraulic shock absorber airtightness testing equipment according to claim 2, characterized in that, A first solenoid valve is installed on the mounting bracket, which is used to control the opening and closing of the foam connecting pipe. A second solenoid valve is installed on the mounting bracket, which is used to control the opening and closing of the gas connecting pipe.

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