Multistage vibration seal performance test device

Abstract

The present application relates to the technical field of test device, provide a kind of multistage vibration sealing performance test device, including test main body, vibration component and test assembly;Test main body includes test cylinder body and cover, the inside of test cylinder body is constructed with test cavity, cover is used to close test cavity, cover and test cylinder body are suitable for the sealing piece to be measured between them;Vibration component includes vibration platform and multistage vibration mechanism, vibration platform is suitable for fixed to preset installation position, test cylinder body is embedded in vibration platform, multistage vibration mechanism is connected to vibration platform, and it is suitable for driving test cylinder body through vibration platform to simulate multistage vibration working condition;Test assembly includes sensor and control component, sensor is electrically connected with control component, sensor is used to monitor the sealing of test cavity, and corresponding information monitored is fed back to control component.The present application can be used to simulate the use state of sealing under complex working condition, to verify the reliability and stability of sealing under complex vibration condition.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a multi-stage vibration seal performance testing device. Background Technology

[0002] As a crucial basic component in engineering and manufacturing, seals play an irreplaceable role in numerous industries and applications. Seals are typically made of elastic materials such as rubber, polyurethane, and silicone. Their elasticity and flexibility allow them to adapt to different surface shapes and motion conditions while maintaining good sealing performance. They are primarily used to prevent the leakage of fluids (liquids or gases), dust, and other impurities, while also preventing the intrusion of external media.

[0003] Specialized seals used in hydrogen applications need to be designed to withstand multi-level vibration conditions. However, the market currently lacks testing equipment that can effectively simulate the performance of seals in hydrogen applications. This directly affects the reliability and safety of equipment used in hydrogen applications, especially for industries that rely on high-purity hydrogen, such as aerospace, nuclear energy, fine chemicals, and vehicle-mounted hydrogen storage. Summary of the Invention

[0004] This invention provides a multi-stage vibration seal performance testing device to address the aforementioned technical deficiencies in the prior art. It can be used to simulate the usage state of seals under complex working conditions to verify the reliability and stability of seals under complex vibration conditions.

[0005] This invention provides a multi-level vibration seal performance testing device, comprising a test body, a vibration component, and a test assembly.

[0006] The test body includes a test cylinder and a cover. The test cylinder has an internal test cavity. The cover is placed on the test cylinder to seal the test cavity. A test sealing element is suitable to be placed between the cover and the test cylinder.

[0007] The vibration component includes a vibration platform and a multi-stage vibration mechanism. The vibration platform is adapted to be fixed to a preset installation position. The test cylinder is embedded in the vibration platform. The multi-stage vibration mechanism is connected to the vibration platform and is adapted to drive the test cylinder through the vibration platform to simulate multi-stage vibration conditions.

[0008] The test assembly includes a sensor and a control component. The sensor is electrically connected to the control component and is used to monitor the airtightness of the test chamber and feed back the monitored information to the control component.

[0009] According to the multi-stage vibration seal performance testing device provided by the present invention, the multi-stage vibration mechanism includes a driving component, a rotating component, a first vibration component, and a second vibration component;

[0010] The rotating component is connected to the test cylinder and is used to drive the test cylinder to rotate; the first vibration component is adapted to abut against the test cylinder and is used to drive the test cylinder to vibrate in the vertical direction; the second vibration component is adapted to abut against the test cylinder and is used to drive the test cylinder to swing in the horizontal direction; the driving component is connected to any one of the rotating component, the first vibration component and the second vibration component, and is used to drive the rotating component, the first vibration component and the second vibration component to perform graded vibration.

[0011] According to the multi-stage vibration seal performance testing device provided by the present invention, the rotating assembly includes a rotating shaft, a first rotating toothed gear, a second rotating toothed gear, a first transmission gear, a second transmission gear, and a third transmission gear;

[0012] The first rotating toothed gear is located at one end of the rotating shaft, and the second rotating toothed gear is located at the other end of the rotating shaft;

[0013] The first transmission gear is fixedly mounted on the fixed shaft of the test cylinder, and the second transmission gear and the third transmission gear are coaxially mounted on the vibration platform. The first transmission gear meshes with the second transmission gear, and the third transmission gear is adapted to mesh with the second rotating toothed gear.

[0014] According to the multi-stage vibration seal performance testing device provided by the present invention, the first vibration component includes a first vibration bevel gear, a cam, and a push rod;

[0015] The first vibrating bevel gear is located at a preset installation position and is adapted to mesh with the first rotating toothed gear. The cam is coaxially arranged with the first vibrating bevel gear. The push rod guide is located on the vibration platform and is located on the rotation path of the cam. The push rod is adapted to perform linear reciprocating motion with the cam so that the test cylinder moves in the vertical direction.

[0016] According to the multi-stage vibration seal performance testing device provided by the present invention, the first vibration component further includes a bushing, which is sleeved on the fixed shaft and abuts against the bottom wall of the test cylinder; the bushing is provided with a limiting flange, and the push rod is adapted to abut against the limiting flange so as to drive the test cylinder to move upward in the vertical direction through the bushing.

[0017] According to the multi-stage vibration seal performance testing device provided by the present invention, the second vibration component includes a second vibration bevel gear, a horizontal swing module, and a transmission component;

[0018] The second vibrating bevel gear is located at a preset installation position and is adapted to mesh with the first rotating toothed gear. The horizontal swing module passes through the vibration platform and is clamped to the outer circumferential surface of the test cylinder. The transmission component is connected to the transmission shaft of the second vibrating bevel gear and the horizontal swing module respectively.

[0019] According to the multi-stage vibration seal performance testing device provided by the present invention, the horizontal swing module includes a horizontal swing toothed gear, a swing component, and a guide component;

[0020] The horizontally oscillating toothed gear is connected to the transmission component;

[0021] The swinging component is provided with a groove that matches the outer circumferential surface of the test cylinder. The groove abuts against the outer circumferential surface of the test cylinder. The main body of the swinging component abuts against the groove wall of the side wall of the vibration platform. The swinging component is provided with a swinging gear ring, which is adapted to mesh with the horizontal swinging toothed gear.

[0022] The guide member is embedded in the vibration platform, and the guide member is provided with a guide groove for the horizontal movement of the swinging member.

[0023] According to the multi-stage vibration seal performance testing device provided by the present invention, the multi-stage vibration mechanism further includes a third vibration component, which is connected to at least one side of the vibration platform and is used to drive the vibration platform to swing along its own support axis, thereby causing the test cylinder to swing.

[0024] According to the multi-stage vibration seal performance testing device provided by the present invention, the third vibration component includes an extension shaft, a third vibration toothed gear, a vibration gear ring and a connecting rod. The vibration gear ring is provided with a connecting part, one end of the connecting rod is hinged to the connecting part, and the other end of the connecting rod is hinged to the outer wall of the vibration platform.

[0025] The extension shaft is connected to the rotation shaft, and both the extension shaft and the rotation shaft are adapted to move in the vertical direction to switch between a first position and a second position;

[0026] In the first position, the third vibrating toothed gear is completely separated from the vibrating gear ring, the second rotating toothed gear is adapted to mesh with the third transmission gear, and the first rotating toothed gear is adapted to mesh with the first vibrating bevel gear or the second vibrating bevel gear;

[0027] In the second position, the second rotating toothed gear is completely separated from the third transmission gear, and the first rotating toothed gear is completely separated from the first vibrating bevel gear and the second vibrating bevel gear; the third vibrating toothed gear meshes with the vibrating gear ring.

[0028] According to the multi-stage vibration seal performance testing device provided by the present invention, the vibration platform includes a first vibration body, a second vibration body, and two support bodies;

[0029] The first vibration body has an internal structure with a first vibration cavity, the shape of which matches the shape of the test cylinder, and the test cylinder is disposed in the first vibration cavity;

[0030] The second vibration body has an internal limiting cavity, the shape of which matches the shape of the first vibration body. The first vibration body is disposed in the limiting cavity, and its two sides are restricted, making it suitable for reciprocating in the horizontal direction within the limiting cavity.

[0031] Two support bodies are symmetrically arranged on opposite sides of the second vibration body. Each support body is adapted to be fixed to a preset installation position. The second vibration body is guided and matched with each support body and is adapted to swing along the support axis of the support body.

[0032] The multi-stage vibration seal performance testing device provided by this invention, by setting up a vibration component consisting of a vibration platform and a multi-stage vibration mechanism, as well as a test assembly, can be used to simulate the service state of seals under complex working conditions to verify the reliability and stability of seals under complex vibration conditions. Furthermore, the entire vibration component is composed of a mechanical structure with high structural strength, allowing for highly adjustable vibration parameters (frequency, amplitude, phase), accurately simulating various vibration modes from low to high frequencies to meet different testing requirements; and it can bear heavy samples, making it suitable for vibration testing of heavy equipment and large structural components. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is one of the structural schematic diagrams of the multi-stage vibration seal performance testing device provided in the embodiments of the present invention.

[0035] Figure 2This is the second structural schematic diagram of the multi-stage vibration seal performance testing device provided in the embodiments of the present invention.

[0036] Figure 3 This is a side view of the seal under multi-level vibration conditions provided in an embodiment of the present invention.

[0037] Figure 4 yes Figure 3 A cross-sectional view along line AA.

[0038] Figure 5 This is an exploded view of the layout structure of the multi-stage vibration seal performance testing device provided in this embodiment of the invention.

[0039] Figure 6 This is a schematic diagram of the multi-stage vibration seal performance testing device provided in an embodiment of the present invention.

[0040] Figure 7 This is one of the main views (first position) of the multi-level vibration seal performance testing device provided in the embodiment of the present invention.

[0041] Figure 8 This is the second (second position) main view of the multi-stage vibration seal performance testing device provided in the embodiment of the present invention.

[0042] Figure label:

[0043] 10. Test body; 11. Test cylinder; 111. Fixed shaft; 12. Cover;

[0044] 20. Vibration platform; 21. First vibration body; 211. First vibration chamber; 22. Second vibration body; 221. Limiting chamber; 23. Support body;

[0045] 30. Multi-stage vibration mechanism; 31. Rotating assembly; 311. Rotating shaft; 312. First rotating toothed gear; 313. Second rotating toothed gear; 314. First transmission gear; 315. Second transmission gear; 316. Third transmission gear; 32. First vibration assembly; 321. First vibrating bevel gear; 322. Cam; 323. Push rod; 324. Bushing; 33. Second vibration assembly; 331. Second vibrating bevel gear; 332. Horizontal pendulum. Moving module; 3321, horizontal oscillating toothed gear; 3322, oscillating component; 3322-1, slot; 3322-2, oscillating gear ring; 3323, guide component; 3323-1, guide groove; 333, transmission component; 3331, first pulley; 3332, second pulley; 3333, transmission belt; 34, third vibration component; 341, extension shaft; 342, third vibrating toothed gear; 343, vibrating gear ring; 344, connecting rod. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0047] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0048] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Because hydrogen is extremely light and its molecules are very small, it can permeate many traditional sealing materials. Therefore, special seals used in hydrogen applications (such as energy, chemical, and aerospace industries) need to take into account their special permeability and safety requirements. In particular, performance testing of seals in hydrogen fuel cells, hydrogen storage and transportation systems is crucial.

[0051] In the aforementioned application areas, seals need to withstand complex and variable operating conditions, such as high pressure, low temperature, and long-term operation. These conditions are often accompanied by mechanical vibration. For example, various vibration sources exist in hydrogen compressors, hydrogen storage tanks, hydrogen delivery pipelines, and fuel cell systems. Vibration can cause displacement, loosening, or even failure of the seals. Thus, hydrogen molecules, being extremely small, can easily leak during vibration, potentially leading to safety accidents such as explosions or fires. Therefore, this invention provides a multi-stage vibration seal performance testing device.

[0052] Figure 1 This is one of the structural schematic diagrams of the multi-stage vibration seal performance testing device provided in the embodiments of the present invention. Figure 2 This is the second structural schematic diagram of the multi-stage vibration seal performance testing device provided in the embodiments of the present invention. Figure 3 This is a side view of the seal under multi-level vibration conditions provided in an embodiment of the present invention. Figure 4 yes Figure 3 A cross-sectional view along line AA.

[0053] See Figures 1 to 4 This invention provides a multi-stage vibration seal performance testing device to simulate the usage state of seals under complex working conditions and to verify the reliability and stability of seals under complex vibration conditions. The multi-stage vibration seal performance testing device includes a test body 10, vibration components, and test assemblies.

[0054] The test body 10 includes a test cylinder 11 and a cover 12. The test cylinder 11 has an internal test chamber for storing a sealing medium. The cover 12 is placed on the test cylinder 11 to seal the test chamber. The cover 12 is suitable for placing the test sealing element between the cover 12 and the test cylinder 11. That is, the test sealing element is installed on the test body 10 in the normal use manner. The test body 10 can simulate the interface relationship with surrounding components in actual operation.

[0055] The test body 10 can be adapted to the application scenario of the seal, and the structural settings of the test body 10 are different under different application scenarios. During the test, parameters such as vibration frequency, amplitude, direction, temperature, and pressure are preset according to different application scenarios to ensure that the test environment can reproduce the expected working conditions.

[0056] The vibrating components include a vibration platform 20 and a multi-stage vibration mechanism 30. The vibration platform 20 is suitable for being fixed to a preset installation position and needs to have good rigidity and flatness to accurately transmit vibration energy. The vibration platform 20 can be fixed to the ground or a test bench using fasteners such as bolts to ensure its stability. The preset installation position can be set to the ground or the surface of a test bench, depending on the test scenario. The test cylinder 11 is embedded in the vibration platform 20, and the multi-stage vibration mechanism 30 is connected to the vibration platform 20 and is suitable for driving the test cylinder 11 through the vibration platform 20 to simulate multi-stage vibration conditions.

[0057] The test assembly includes sensors and control components (neither shown in the figure). The sensors are electrically connected to the control components. The sensors are used to monitor the sealing of the test chamber and feed back the monitored information to the control components.

[0058] Sensor types can include pressure sensors, displacement sensors, vibration sensors, stress / strain sensors, and optical sensors. Pressure sensors monitor the static and dynamic pressure on both sides of the seal to check for leaks and confirm the sealing effect. Displacement sensors monitor the displacement changes of the seal under stress or vibration, detecting its recovery ability and deformation. Vibration sensors, such as accelerometers, capture vibration frequency and amplitude information to help analyze the behavior of the seal under multi-level vibration. Stress / strain sensors quantify the stress distribution inside or on the surface to understand the seal's pressure resistance and fatigue state. Optical sensors use visual or infrared imaging to observe the seal's appearance for cracks, damage, etc. The specific sensor is selected based on the actual application scenario. Regardless of the sensor chosen, each sensor is electrically connected to the control component to provide real-time feedback of monitoring information, which is then recorded and analyzed by the control component.

[0059] The control unit is mainly used to receive information, process information and issue instructions. The control unit can be a programmable logic controller (PLC), a microprocessor or microcontroller (MCU) and a central processing unit (CPU), etc.

[0060] It is understood that the multi-stage vibration seal performance testing device provided in this embodiment of the invention, by setting up a vibration component and test assembly consisting of a vibration platform 20 and a multi-stage vibration mechanism 30, can be used to simulate the usage state of seals under complex working conditions to verify the reliability and stability of seals under complex vibration conditions. Furthermore, the entire vibration component is composed of a mechanical structure with high structural strength, allowing for highly adjustable vibration parameters (frequency, amplitude, phase), accurately simulating various vibration modes from low to high frequencies to meet different testing requirements; and it allows for the bearing of heavy samples, making it suitable for vibration testing of heavy equipment and large structural components.

[0061] Continue reading Figures 1 to 4 In some embodiments of the present invention, the multi-stage vibration mechanism 30 includes a drive assembly, a rotation assembly 31, a first vibration assembly 32, and a second vibration assembly 33.

[0062] The rotating component 31 is connected to the test cylinder 11 and is used to drive the test cylinder 11 to rotate; the first vibration component 32 is adapted to abut against the test cylinder 11 and is used to drive the test cylinder 11 to vibrate in the vertical direction; the second vibration component 33 is adapted to abut against the test cylinder 11 and is used to drive the test cylinder 11 to swing in the horizontal direction; the driving component is connected to any one of the rotating component 31, the first vibration component 32 and the second vibration component 33, and is used to drive the rotating component 31, the first vibration component 32 and the second vibration component 33 to perform graded vibration.

[0063] In essence, this embodiment of the invention uses a single drive component (such as a motor) to control multiple sets of vibration units. Specifically, one motor controls the rotating component 31, the first vibration component 32, and the second vibration component 33 for graded vibration. This configuration not only reduces the number of motors, making the multi-stage vibration seal performance testing device more compact and reducing its footprint, but also facilitates precise synchronization between multiple transmission components by using a unified power source, improving overall coordination and smoothness. Furthermore, unified control optimizes vibration modes, reduces noise pollution and mechanical wear, avoids resonance effects caused by independent operation of multiple motors, and further improves testing accuracy.

[0064] Continue reading Figure 4 In some embodiments of the present invention, the rotating assembly 31 includes a rotating shaft 311, a first rotating toothed gear 312, a second rotating toothed gear 313, a first transmission gear 314, a second transmission gear 315, and a third transmission gear 316. The first rotating toothed gear 312 is disposed at one end of the rotating shaft 311, and the second rotating toothed gear 313 is disposed at the other end of the rotating shaft 311. The first transmission gear 314 is fixedly disposed on the fixed shaft 111 of the test cylinder 11 and is used to transmit power to the test cylinder 11 to drive the test cylinder 11 to rotate. The second transmission gear 315 and the third transmission gear 316 are coaxially disposed on the vibration platform 20. The first transmission gear 314 meshes with the second transmission gear 315, and the third transmission gear 316 is adapted to mesh with the second rotating toothed gear 313.

[0065] The rotating shaft 311 serves as the main body for bearing and transmitting torque. At each end of the rotating shaft 311 are a first rotating toothed gear 312 and a second rotating toothed gear 313. The first rotating toothed gear 312, through its tooth-segmented design, can achieve intermittent, timed contact with other gears or toothed gears. The second rotating toothed gear 313, also with a tooth-segmented design, can form a similar sequential contact with the third transmission gear 316.

[0066] When the power source (motor) drives the rotating shaft 311 to rotate, the rotating shaft 311 drives the first rotating toothed gear 312 and the second rotating toothed gear 313 to rotate synchronously. As the rotating shaft 311 continues to rotate, the notch on the second rotating toothed gear 313 periodically contacts the third transmission gear 316, realizing intermittent power output. The second transmission gear 315 is located between the first transmission gear 314 and the third transmission gear 316, playing the role of power transfer, transferring the power of the third transmission gear 316 to the first transmission gear 314. The first transmission gear 314 transmits the power to the test cylinder 11 to drive the test cylinder 11 to rotate, realizing the rotational motion of the test cylinder 11.

[0067] By precisely designing the shapes of the first rotating toothed gear 312 and the second rotating toothed gear 313, the timing of power transmission can be started and stopped, and the vibration frequency and duration can be precisely controlled. The intermittent meshing between the toothed gears allows the vibration platform 20 to flexibly change the vibration mode according to actual needs, adapting to different experimental requirements or changes in working conditions.

[0068] Continue reading Figure 4 In some embodiments of the present invention, the first vibration assembly 32 includes a first vibration bevel gear 321, a cam 322, and a push rod 323. The first vibration bevel gear 321 is disposed at a preset installation position and is adapted to mesh with a first rotating toothed gear 312. The cam 322 is coaxially arranged with the first vibration bevel gear 321. The push rod 323 is guided and disposed on the vibration platform 20. The push rod 323 is located on the rotation path of the cam 322 and is adapted to perform linear reciprocating motion with the cam 322 so that the test cylinder 11 moves in the vertical direction.

[0069] The first vibrating bevel gear 321 can be mounted at a preset installation position (such as the ground or the surface of an experimental platform) via a transmission shaft mounted on a bearing seat. The first vibrating bevel gear 321, as the component of the first vibration assembly 32 that directly receives rotational power, meshes with the first rotating toothed gear 312 to achieve intermittent power input. The cam 322 is coaxially arranged with the first vibrating bevel gear 321, and interacts with the push rod 323 using its own contour surface, causing the push rod 323 to produce linear reciprocating motion. The push rod 323 can directly abut against the bottom surface of the test cylinder 11, or it can indirectly lift the test cylinder 11 through an intermediate structure, causing the test cylinder 11 to vibrate vertically with the movement of the push rod 323.

[0070] When the first vibrating bevel gear 321 meshes with the first rotating toothed gear 312, the rotational power of the first rotating toothed gear 312 is transmitted to the first vibration component 32. The rotation of the first vibrating bevel gear 321 drives the coaxially arranged cam 322 to rotate together. The contact point between the profile of the cam 322 and the push rod 323 changes continuously. As the profile of the cam 322 changes, the push rod 323 is subjected to an outward force and makes a linear reciprocating motion along the pre-designed guide groove 3323-1. The linear motion of the push rod 323 is directly or indirectly converted into the vibration of the test cylinder 11 in the vertical direction.

[0071] In this embodiment of the invention, the shape of the cam 322 determines the stroke and speed of the push rod 323. By optimizing the shape design of the cam 322, precise adjustment of the vibration frequency and amplitude can be achieved. That is, by adjusting the size and shape of the cam 322, the vibration mode can be changed to meet different experimental requirements.

[0072] In some embodiments of the present invention, the first vibration assembly 32 further includes a bushing 324, which is sleeved on the fixed shaft 111 and abuts against the bottom wall of the test cylinder 11; the bushing 324 is provided with a limiting flange, and the push rod 323 is adapted to abut against the limiting flange so as to drive the test cylinder 11 to move upward in the vertical direction through the bushing 324.

[0073] In this embodiment of the invention, the push rod 323 is indirectly in contact with the bottom wall of the test cylinder 11 through the bushing 324. The linear motion of the push rod 323 is indirectly converted into the vertical upward vibration of the test cylinder 11 through the bushing 324. When the push rod 323 removes the force applied to the bushing 324, the bushing 324 and the test cylinder 11 fall freely under the action of gravity.

[0074] Continue reading Figure 4 In some embodiments of the present invention, the second vibration assembly 33 includes a second vibration bevel gear 331, a horizontal swing module 332, and a transmission component 333. The second vibration bevel gear 331 is disposed at a preset installation position and is adapted to mesh with the first rotating toothed gear 312. The horizontal swing module 332 passes through the rotation center of the support shaft of the vibration platform 20 and is engaged with the outer circumferential surface of the test cylinder 11. The transmission component 333 is connected to the transmission shaft of the second vibration bevel gear 331 and the horizontal swing module 332 respectively.

[0075] The second vibrating bevel gear 331 can be mounted at a preset installation position (such as the ground or the surface of an experimental platform) via a transmission shaft mounted on a bearing seat. The second vibrating bevel gear 331 serves as the power receiving end of the second vibration component 33. It meshes with the first rotating toothed gear 312 to achieve intermittent power input. The horizontal swing module 332 directly acts on the outer circumferential surface of the test cylinder 11, realizing lateral vibration of the test cylinder 11 and enhancing the multi-dimensional simulation of experimental conditions. The transmission component 333 connects the second vibrating bevel gear 331 and the horizontal swing module 332 at a certain distance, converting the rotational kinetic energy of the second vibrating bevel gear 331 into lateral swing potential energy, ensuring efficient vibration transmission.

[0076] When the second vibrating bevel gear 331 meshes with the first rotating toothed gear 312, it receives power from the first rotating toothed gear 312 and begins to rotate. The transmission component 333 (such as a chain component, belt component, or coupling) converts the rotational motion of the second vibrating bevel gear 331 into the lateral vibration of the horizontal swing module 332. The horizontal swing module 332 applies kinetic energy to the test cylinder 11 in a lateral form, causing the test cylinder 11 to vibrate in the XY plane. This vibration, combined with the vertical vibration, forms a composite vibration field in three-dimensional space, simulating the complex mechanical environment experienced by the test cylinder 11 in actual working conditions.

[0077] It should be noted that the transmission component 333 can be a belt component, that is, the transmission component 333 includes a first pulley 3331, a second pulley 3332 and a transmission belt 3333. The first pulley 3331 is coaxially arranged with the second vibrating bevel gear 331. The second pulley 3332 is installed in a preset installation position through a transmission shaft set on a bearing seat. The transmission belt 3333 is in transmission cooperation with the first pulley 3331 and the second pulley 3332.

[0078] Figure 5 This is an exploded view of the layout structure of the multi-stage vibration seal performance testing device provided in this embodiment of the invention. Figure 6 This is a schematic diagram of the multi-stage vibration seal performance testing device provided in an embodiment of the present invention.

[0079] See Figure 5 and Figure 6 In some embodiments of the present invention, the horizontal swing module 332 includes a horizontal swing toothed gear 3321, a swing member 3322, and a guide member 3323. The horizontal swing toothed gear 3321 is connected to the transmission member 333; the swing member 3322 is located at the rotation center of the support shaft of the vibration platform 20, and when the second vibration body 22 of the vibration platform 20 swings around the support shaft, the swing member 3322 can avoid interfering with the movement of the second vibration body 22.

[0080] The swing component 3322 is provided with a groove 3322-1 that matches the outer circumferential surface of the test cylinder 11. The groove 3322-1 abuts against the outer circumferential surface of the test cylinder 11. The main body of the swing component 3322 abuts against the groove wall of the side wall of the vibration platform 20. The swing component 3322 is provided with a swing gear ring 3322-2, which is adapted to mesh with a horizontal swing toothed gear 3321. The guide component 3323 is embedded in the support body 23 and is provided with a guide groove 3323-1 for horizontal movement of the swing component 3322.

[0081] The horizontal swing module 332 is the core component of the second vibration assembly 33. The horizontal swing toothed gear 3321 is coaxially arranged with the second pulley 3332, serving as the power receiving end of the horizontal swing module 332. Through a specific toothed design, the horizontal swing toothed gear 3321 coordinates with the vibration components to ensure precise energy transmission. The swing component 3322 has a groove 3322-1 that matches the outer diameter of the test cylinder 11, allowing for a tight fit and ensuring direct and uniform transmission of vibration to the test cylinder 11, thereby reducing energy loss and improving vibration efficiency. The guide component 3323 is securely embedded in the fixed sleeve of the support body 23, acting as a guide. By opening a guide groove 3323-1 on the guide component 3323, the movement trajectory of the swing component 3322 is limited, ensuring that the swing component 3322 swings only in the expected horizontal direction. Simultaneously, the design of the guide component 3323 allows it to rotate around the support shaft, further contributing to these functions.

[0082] It should be noted that the guide member 3323 may not be required. Instead, the guide groove 3323-1 may be directly opened on the fixed sleeve of the support body 23 to limit the movement trajectory of the swing member 3322.

[0083] When the horizontally oscillating toothed gear 3321 receives rotational power from the second pulley 3332 of the transmission component 333 and begins to rotate, the horizontally oscillating toothed gear 3321 meshes with the gear ring on the oscillating member 3322, converting the rotational motion into lateral vibration of the oscillating member 3322. Under the constraint of the guide member 3323, the oscillating member 3322 performs controlled horizontal oscillation along the guide groove 3323-1, ensuring smooth and orderly vibration. At this time, the slot 3322-1 at the end of the oscillating member 3322 tightly clamps the test cylinder 11, transferring the lateral vibration energy to the test cylinder 11, enabling the test cylinder 11 to achieve lateral vibration.

[0084] In this embodiment of the invention, the swing angle and frequency can be controlled by precisely defined gear ratios and guide paths, achieving a highly accurate vibration effect. Furthermore, by adjusting the corresponding missing tooth position of the missing tooth gear, the test cylinder 11 can be continuously switched between vertical swing, horizontal swing, and rotational vibration.

[0085] Continue reading Figures 1 to 6 In some embodiments of the present invention, the multi-stage vibration mechanism 30 further includes a third vibration component 34, which is connected to at least one side of the vibration platform 20 and is used to drive the vibration platform 20 to swing along its own support axis to drive the test cylinder 11 to swing.

[0086] In other words, this embodiment of the invention provides an additional swinging motion, enabling the test cylinder 11 to not only achieve rotational vibration, vertical vibration, and horizontal vibration, but also to swing left and right around the rotation center of the vibration platform 20. Combined with the aforementioned vibrations, it forms a richer three-dimensional vibration mode, simulates a complex real environment, and realizes the vibration of the test cylinder 11 in the XYZ axes, approximating the complex vibration state in nature.

[0087] Figure 7 This is one of the main views (first position) of the multi-level vibration seal performance testing device provided in the embodiment of the present invention. Figure 8 This is the second (second position) main view of the multi-level vibration seal performance testing device provided in the embodiment of the present invention.

[0088] Continue reading Figures 1 to 4 And see also Figure 7 and Figure 8 In some embodiments of the present invention, the third vibration assembly 34 includes an extension shaft 341, a third vibration toothed gear 342, a vibration gear ring 343, and a connecting rod 344. The vibration gear ring 343 is provided with a connecting part, one end of the connecting rod 344 is hinged to the connecting part, and the other end of the connecting rod 344 is hinged to the outer wall of the vibration platform 20.

[0089] The extension shaft 341 is connected to the rotation shaft 311, and both the extension shaft 341 and the rotation shaft 311 are adapted to move in the vertical direction to switch between a first position and a second position.

[0090] It should be noted that the extension shaft 341 and the rotation shaft 311 can be a single shaft, which is equivalent to dividing one shaft into two parts for easy distinction from the above embodiments; of course, the extension shaft 341 and the rotation shaft 311 can also be two independent parts connected to each other by a coupling or the like. Regardless of the configuration, the extension shaft 341 and the rotation shaft 311 always move synchronously in the vertical direction.

[0091] At least one of the extension shaft 341 and the rotary shaft 311 can be mounted on a linear drive module (not shown in the figure) via a bearing housing. The linear drive module can be a linear guide rail and a ball screw or a linear motor, and the linear drive module is fixed in a suitable position on the experimental platform. That is, the extension shaft 341 and the rotary shaft 311 achieve position switching through the linear drive module.

[0092] like Figure 7 As shown, in the first position, the third vibrating toothed gear 342 is completely separated from the vibrating gear ring 343, that is, the vibrating gear ring 343 does not participate in the movement, and the third vibrating component 34 does not engage with the vibration system. At this time, the second rotating toothed gear 313 is adapted to mesh with the third transmission gear 316 to maintain normal rotational vibration, and the first rotating toothed gear 312 is adapted to mesh with the first vibrating bevel gear 321 or the second vibrating bevel gear 331 to realize the vibration of the test cylinder 11 in the vertical and horizontal directions.

[0093] like Figure 8 As shown, in the second position, the second rotating toothed gear 313 is completely separated from the third transmission gear 316, thus interrupting the normal rotational vibration. The first rotating toothed gear 312 is completely separated from the first vibration bevel gear 321 and the second vibration bevel gear 331, thus stopping the original vibration mode. At this time, the third vibration toothed gear 342 meshes with the vibration gear ring 343. The vibration gear ring 343 moves to excite the swing of the vibration platform 20 through the connecting rod 344, thereby driving the test cylinder 11 to swing and introducing the swing mode of the third vibration component 34.

[0094] In this embodiment of the invention, the oscillation mode of the third vibration component 34 can be inserted into the vibration mode described above at any time by controlling the movement path of the linear drive module, thereby realizing any combination of multiple vibration modes.

[0095] Continue reading Figures 1 to 8 In some embodiments of the present invention, the vibration platform 20 includes a first vibration body 21, a second vibration body 22 and two support bodies 23.

[0096] The first vibrating body 21 has a first vibrating cavity 211 inside, the shape of which matches the shape of the test cylinder 11. The test cylinder 11 is located in the first vibrating cavity 211 to ensure that the vibration force is evenly transmitted to the test cylinder 11. The second vibrating body 22 has a limiting cavity 221 inside, the shape of which matches the shape of the first vibrating body 21. The first vibrating body 21 is located in the limiting cavity 221, and its two sides are restricted, allowing it to swing back and forth in the horizontal direction within the limiting cavity 221, that is, allowing the first vibrating body 21 to vibrate in the horizontal direction within the limiting cavity 221.

[0097] Two support bodies 23 are symmetrically arranged on opposite sides of the second vibration body 22. Each support body 23 is suitable for fixing to a preset installation position (ground or test bench surface) to form a stable base. The second vibration body 22 is guided and matched with each support body 23 and is suitable for swinging along the support axis of the support body 23, that is, it is allowed to swing around the support axis, thereby realizing multi-dimensional vibration.

[0098] Essentially, the first vibrating body 21 is directly attached to the test cylinder 11 through its built-in first vibrating cavity 211, transmitting vibrations to the test cylinder 11 without damage. The second vibrating body 22, acting as an external frame, surrounds the first vibrating body 21 through a limiting cavity 221, ensuring its positional stability while allowing necessary vibration degrees of freedom. Then, with the help of two supporting bodies 23, the second vibrating body 22 can swing around its axis within a specific range, adding lateral vibration modes and enriching the vibration modes.

[0099] That is, when the vibration platform 20 vibrates, the first vibration body 21, because it is assembled inside the second vibration body 22, will swing around the support shaft with the second vibration body 22. The slot 3322-1 provided at the end of the swing member 3322 abuts against the outer circumferential surface of the test cylinder 11, and the swing member 3322 will also swing with it. Since the swing member 3322 is located at the rotation center of the support shaft, the swing member 3322 will not interfere with the swing of the second vibration body 22 around the support shaft when the second vibration body 22 swings around the support shaft.

[0100] By adjusting the angle and length of the support body 23, this embodiment of the invention can adapt to test cylinders 11 of different sizes and weights.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage vibration seal performance testing device, characterized in that, include: The test body includes a test cylinder and a cover. The test cylinder has an internal test cavity. The cover is placed on the test cylinder to seal the test cavity. A test sealing element is suitable to be placed between the cover and the test cylinder. A vibration component includes a vibration platform and a multi-stage vibration mechanism. The vibration platform is adapted to be fixed to a preset installation position. The test cylinder is embedded in the vibration platform. The multi-stage vibration mechanism is connected to the vibration platform and adapted to drive the test cylinder to simulate multi-stage vibration conditions through the vibration platform. The multi-stage vibration mechanism includes a drive component, a rotation component, a first vibration component, and a second vibration component. The rotation component is connected to the test cylinder and is used to drive the test cylinder to rotate. The first vibration component is adapted to abut against the test cylinder and is used to drive the test cylinder to vibrate in the vertical direction. The second vibration component is adapted to abut against the test cylinder and is used to drive the test cylinder to swing in the horizontal direction. The drive component is connected to any one of the rotation component, the first vibration component, and the second vibration component and is used to drive the rotation component, the first vibration component, and the second vibration component to perform graded vibration. The rotating assembly includes a rotating shaft, a first rotating toothed gear, a second rotating toothed gear, a first transmission gear, a second transmission gear, and a third transmission gear; the first rotating toothed gear is located at one end of the rotating shaft, and the second rotating toothed gear is located at the other end of the rotating shaft; the first transmission gear is fixedly mounted on the fixed shaft of the test cylinder, and the second transmission gear and the third transmission gear are coaxially mounted on the vibration platform; the first transmission gear meshes with the second transmission gear, and the third transmission gear is adapted to mesh with the second rotating toothed gear; The first vibration assembly includes a first vibration bevel gear, a cam, and a push rod; The first vibrating bevel gear is located at a preset installation position and is adapted to mesh with the first rotating toothed gear. The cam is coaxially arranged with the first vibrating bevel gear. The push rod is guided on the vibration platform and is located on the rotation path of the cam. The push rod is adapted to reciprocate linearly with the cam so that the test cylinder moves in the vertical direction. The test assembly includes a sensor and a control component. The sensor is electrically connected to the control component and is used to monitor the airtightness of the test chamber and feed back the monitored information to the control component.

2. The multi-stage vibration seal performance testing device according to claim 1, characterized in that, The first vibration assembly further includes a bushing, which is sleeved on the fixed shaft and abuts against the bottom wall of the test cylinder; the bushing is provided with a limiting flange, and the push rod is adapted to abut against the limiting flange so as to drive the test cylinder to move upward in the vertical direction through the bushing.

3. The multi-stage vibration seal performance testing device according to claim 1, characterized in that, The second vibration assembly includes a second vibration bevel gear, a horizontal swing module, and a transmission component; The second vibrating bevel gear is located at a preset installation position and is adapted to mesh with the first rotating toothed gear. The horizontal swing module passes through the vibration platform and is clamped to the outer circumferential surface of the test cylinder. The transmission component is connected to the transmission shaft of the second vibrating bevel gear and the horizontal swing module respectively.

4. The multi-stage vibration seal performance testing device according to claim 3, characterized in that, The horizontal swing module includes a horizontal swing toothed gear, a swing component, and a guide component; The horizontally oscillating toothed gear is connected to the transmission component; The swinging component is provided with a groove that matches the outer circumferential surface of the test cylinder. The groove abuts against the outer circumferential surface of the test cylinder. The main body of the swinging component abuts against the groove wall of the side wall of the vibration platform. The swinging component is provided with a swinging gear ring, which is adapted to mesh with the horizontal swinging toothed gear. The guide member is embedded in the vibration platform, and the guide member is provided with a guide groove for the horizontal movement of the swinging member.

5. The multi-stage vibration seal performance testing device according to any one of claims 1 to 4, characterized in that, The multi-stage vibration mechanism further includes a third vibration component connected to at least one side of the vibration platform, which drives the vibration platform to swing along its own support axis, thereby causing the test cylinder to swing.

6. The multi-stage vibration seal performance testing device according to claim 5, characterized in that, The third vibration component includes an extension shaft, a third vibration toothed gear, a vibration gear ring, and a connecting rod. The vibration gear ring is provided with a connecting part. One end of the connecting rod is hinged to the connecting part, and the other end of the connecting rod is hinged to the outer wall of the vibration platform. The extension shaft is connected to the rotation shaft, and both the extension shaft and the rotation shaft are adapted to move in the vertical direction to switch between a first position and a second position; In the first position, the third vibrating toothed gear is completely separated from the vibrating gear ring, the second rotating toothed gear is adapted to mesh with the third transmission gear, and the first rotating toothed gear is adapted to mesh with the first vibrating bevel gear or the second vibrating bevel gear; In the second position, the second rotating toothed gear is completely separated from the third transmission gear, and the first rotating toothed gear is completely separated from the first vibrating bevel gear and the second vibrating bevel gear; the third vibrating toothed gear meshes with the vibrating gear ring.

7. The multi-stage vibration seal performance testing device according to any one of claims 1 to 4, characterized in that, The vibration platform includes a first vibration body, a second vibration body, and two support bodies; The first vibration body has an internal structure with a first vibration cavity, the shape of which matches the shape of the test cylinder, and the test cylinder is disposed in the first vibration cavity; The second vibration body has an internal limiting cavity, the shape of which matches the shape of the first vibration body. The first vibration body is disposed in the limiting cavity, and its two sides are restricted, making it suitable for reciprocating in the horizontal direction within the limiting cavity. Two support bodies are symmetrically arranged on opposite sides of the second vibration body. Each support body is adapted to be fixed to a preset installation position. The second vibration body is guided and matched with each support body and is adapted to swing along the support axis of the support body.

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