Performance testing device for multi-stage vibration sealing element

Abstract

The invention relates to the technical field of test devices, and provides a multistage vibration sealing element performance test device, which comprises a test main body, a vibration part and a test assembly, the test main body comprises a test cylinder body and a cover body, a test cavity is formed in the test cylinder body, the cover body is used for sealing the test cavity, and a tested sealing element is arranged between the cover body and the test cylinder body; the vibration part comprises a vibration platform and a multi-stage vibration mechanism, the vibration platform is suitable for being fixed to a preset installation position, the test barrel is embedded in the vibration platform, and the multi-stage vibration mechanism is connected to the vibration platform and suitable for driving the test barrel to simulate a multi-stage vibration working condition through the vibration platform; the test assembly comprises a sensor and a control part, the sensor is electrically connected with the control part, and the sensor is used for monitoring the sealing performance of the test cavity and feeding back monitored corresponding information to the control part. The device can be used for simulating the use state of the sealing element under the complex working condition so as to verify the reliability and the stability of the sealing element under the complex vibration condition.

Description

Technical Field

[0001] The invention relates to the technical field of testing devices, and in particular to a multi-stage vibration sealing performance testing device. Background Art

[0002] As one of the most important basic components in engineering and manufacturing, seals play an irreplaceable role in many industries and application scenarios. Seals are usually made of elastic materials, such as rubber, polyurethane, silicone, etc. Seals are elastic and flexible, can adapt to different surface shapes and motion states, and maintain good sealing performance. They are mainly used to prevent the leakage of fluids (liquids or gases), dust and other impurities, while preventing the intrusion of external media.

[0003] For special seals used in hydrogen application scenarios, it is necessary to consider the sealing performance of the seals under multi-level vibration conditions. However, there is currently a lack of test equipment on the market that can effectively simulate the performance of seals in hydrogen application scenarios. This will directly affect the reliability and safety of equipment involved in hydrogen application scenarios, especially for industries that rely on high-purity hydrogen operations, such as aerospace, nuclear energy, fine chemicals, and on-board hydrogen storage. Summary of the invention

[0004] The present invention provides a multi-stage vibration seal performance test device to solve the above technical defects in the prior art, and can be used to simulate the use state of the seal under complex working conditions to verify the reliability and stability of the seal under complex vibration conditions.

[0005] The invention provides a multi-stage vibration sealing performance test device, comprising a test body, a vibration component and a test assembly.

[0006] The test body comprises a test cylinder and a cover body, wherein the test cylinder has a test cavity inside, the cover body is disposed on the test cylinder to seal the test cavity, and a seal to be tested is disposed between the cover body and the test cylinder; The vibration component includes a vibration platform and a multi-stage vibration mechanism, wherein the vibration platform is suitable for being fixed to a preset installation position, the test cylinder is embedded in the vibration platform, and the multi-stage vibration mechanism is connected to the vibration platform and is suitable for driving the test cylinder through the vibration platform to simulate a multi-stage vibration condition; The test assembly includes a sensor and a control component. The sensor is electrically connected to the control component. The sensor is used to monitor the sealing of the test cavity and feed back corresponding monitoring information to the control component.

[0007] According to the multi-stage vibration seal performance test 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; The rotating assembly is connected to the test cylinder and is used to drive the test cylinder to rotate; the first vibration assembly is suitable for abutting the test cylinder and is used to drive the test cylinder to vibrate in a vertical direction; the second vibration assembly is suitable for abutting the test cylinder and is used to drive the test cylinder to swing in a horizontal direction; the driving assembly is connected to any one of the rotating assembly, the first vibration assembly and the second vibration assembly, and is used to drive the rotating assembly, the first vibration assembly and the second vibration assembly to perform graded vibration.

[0008] According to the multi-stage vibration seal performance test device provided by the present invention, the rotating assembly includes a rotating shaft, a first rotating toothless gear, a second rotating toothless gear, a first transmission gear, a second transmission gear and a third transmission gear; The first rotating toothless gear is disposed at one end of the rotating shaft, and the second rotating toothless gear is disposed at the other end of the rotating shaft; The first transmission gear is fixed to the fixed shaft of the test cylinder, the second transmission gear and the third transmission gear are coaxially arranged on the vibration platform, the first transmission gear is meshed with the second transmission gear, and the third transmission gear is suitable for meshing with the second rotating toothless gear.

[0009] According to the multi-stage vibration seal performance test device provided by the present invention, the first vibration assembly includes a first vibration bevel gear, a cam and a push rod; The first vibration bevel gear is arranged at a preset installation position, the first vibration bevel gear is suitable for meshing with the first rotating toothless gear, the cam is coaxially arranged with the first vibration bevel gear, the push rod guide is arranged on the vibration platform, the push rod is located on the rotation path of the cam, and the push rod is suitable for performing linear reciprocating motion with the cam so that the test cylinder moves in a vertical direction.

[0010] According to the multi-stage vibration seal performance test device provided by the present invention, the first vibration component also includes a sleeve, which is sleeved on the fixed shaft and abuts against the bottom wall of the test cylinder; the sleeve is provided with a limiting flange, and the push rod is suitable for abutting against the limiting flange to drive the test cylinder to move upward in the vertical direction through the sleeve.

[0011] According to the multi-stage vibration seal performance test device provided by the present invention, the second vibration assembly includes a second vibration bevel gear, a horizontal swing module and a transmission component; The second vibration bevel gear is arranged at a preset installation position, and the second vibration bevel gear is suitable for meshing with the first rotating toothless gear. The horizontal swing module is passed through the vibration platform and clamped to the outer circumferential surface of the test cylinder. The transmission component is respectively connected to the transmission shaft of the second vibration bevel gear and the horizontal swing module.

[0012] According to the multi-stage vibration seal performance test device provided by the present invention, the horizontal swing module comprises a horizontal swing toothless gear, a swing member and a guide member; The horizontal swing toothless gear is connected to the transmission component; The swinging member is provided with a slot matching the outer circumferential surface of the test cylinder, the slot abuts against the outer circumferential surface of the test cylinder, and the main body of the swinging member abuts against the groove wall of the groove on the side wall of the vibration platform; the swinging member is provided with a swinging gear ring, and the swinging gear ring is suitable for meshing with the horizontal swinging toothless gear; The guide member is embedded in the vibration platform, and the guide member is provided with a guide groove for allowing the swing member to move horizontally.

[0013] According to the multi-stage vibration seal performance test device provided by the present invention, the multi-stage vibration mechanism also 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 to drive the test cylinder to swing.

[0014] According to the multi-stage vibration seal performance test device provided by the present invention, the third vibration assembly includes an extension shaft, a third vibration toothless gear, a vibration gear ring and a connecting rod, the vibration gear ring is provided with a connecting portion, one end of the connecting rod is hinged to the connecting portion, and the other end of the connecting rod is hinged to the outer side wall of the vibration platform; The extension shaft is connected to the rotation shaft, and both the extension shaft and the rotation shaft are suitable for moving in a vertical direction to switch between a first position and a second position; In the first position, the third vibrating toothless gear is completely separated from the vibrating gear ring, the second rotating toothless gear is suitable for meshing with the third transmission gear, and the first rotating toothless gear is suitable for meshing with the first vibrating bevel gear or the second vibrating bevel gear; In the second position, the second rotating toothless gear is completely separated from the third transmission gear, the first rotating toothless gear is completely separated from the first vibration bevel gear and the second vibration bevel gear; and the third vibration toothless gear is meshed with the vibration ring gear.

[0015] According to the multi-stage vibration seal performance test device provided by the present invention, the vibration platform includes a first vibration body, a second vibration body and two support bodies; A first vibration cavity is formed inside the first vibration body, the shape of the first vibration cavity matches the shape of the test cylinder, and the test cylinder is arranged in the first vibration cavity; The second vibration body has a limiting cavity in its internal structure, the shape of the limiting cavity matches the shape of the first vibration body, the first vibration body is arranged in the limiting cavity, the two sides of the first vibration body are limited, and the first vibration body is suitable for reciprocating in the limiting cavity along the horizontal direction; The two support bodies are symmetrically arranged on opposite sides of the second vibration body, each of the support bodies is suitable for being fixed to a preset installation position, and the second vibration body is guided and matched with each of the support bodies and is suitable for swinging along the support axis of the support body.

[0016] The multi-stage vibration seal performance test device provided by the present invention can be used to simulate the use state of the seal under complex working conditions by setting a vibration component composed of a vibration platform and a multi-stage vibration mechanism and a test assembly to verify the reliability and stability of the seal under complex vibration conditions. The entire vibration component is composed of a mechanical structure with high structural strength, which can make the vibration parameters (frequency, amplitude, phase) highly adjustable, accurately simulate various vibration modes from low frequency to high frequency, and meet different test requirements; and it allows the bearing of large weight samples, which is suitable for vibration testing of heavy equipment and large structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is one of the structural schematic diagrams of the multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0019] Figure 2 This is the second structural schematic diagram of the multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0020] Figure 3 It is a side view of a seal under multi-level vibration conditions provided by an embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Sectional view along line AA.

[0022] Figure 5 It is a schematic diagram of the layout structure decomposition of a multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0023] Figure 6 It is a structural schematic diagram of a multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0024] Figure 7 This is one of the front views (first position) of the multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0025] Figure 8 This is the second front view (second position) of the multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0026] Reference numerals: 10. Test body; 11. Test cylinder; 111. Fixed shaft; 12. Cover body; 20. Vibration platform; 21. First vibration body; 211. First vibration cavity; 22. Second vibration body; 221. Limiting cavity; 23. Support body; 30. Multi-stage vibration mechanism; 31. Rotating assembly; 311. Rotating shaft; 312. First rotating toothless gear; 313. Second rotating toothless gear; 314. First transmission gear; 315. Second transmission gear; 316. Third transmission gear; 32. First vibration assembly; 321. First vibration bevel gear; 322. Cam; 323. Push rod; 324. Bushing; 33. Second vibration assembly; 331. Second vibration bevel gear; 332. Horizontal pendulum Moving module; 3321, horizontal swing toothless gear; 3322, swinging member; 3322-1, slot; 3322-2, swinging gear ring; 3323, guide member; 3323-1, guide slot; 333, transmission member; 3331, first pulley; 3332, second pulley; 3333, transmission belt; 34, third vibration component; 341, extension shaft; 342, third vibration toothless gear; 343, vibration gear ring; 344, connecting rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0029] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Because hydrogen is extremely light and its molecules are very small, it can penetrate many traditional sealing materials. Therefore, special seals used in hydrogen application scenarios (such as energy, chemical, aerospace and other industries) need to consider their special permeability and safety requirements. In particular, performance testing of seals in hydrogen fuel cells, hydrogen storage and delivery systems is crucial.

[0032] In the above-mentioned application fields, seals need to withstand complex and changeable working conditions, such as high pressure, low temperature, long-term operation, etc., which are usually accompanied by mechanical vibrations. For example, various vibration sources may exist in hydrogen compressors, hydrogen storage tanks, hydrogen delivery pipelines and fuel cell systems. Vibration may cause the seal to shift, loosen or even fail. In this way, hydrogen with extremely small molecules is prone to leakage during vibration, which may lead to safety accidents such as explosions or fires in severe cases. To this end, an embodiment of the present invention provides a multi-stage vibration seal performance test device.

[0033] Figure 1 It is one of the structural schematic diagrams of the multi-stage vibration seal performance test device provided in an embodiment of the present invention. Figure 2 This is the second structural schematic diagram of the multi-stage vibration seal performance test device provided in an embodiment of the present invention. Figure 3 It is a side view of a seal under multi-level vibration conditions provided by an embodiment of the present invention. Figure 4 yes Figure 3 Sectional view along line AA.

[0034] See also Figures 1 to 4 The embodiment of the present invention provides a multi-stage vibration seal performance test device, which is used to simulate the use state of the seal under complex working conditions and to verify the reliability and stability of the seal under complex vibration conditions. The multi-stage vibration seal performance test device includes a test body 10, a vibration component and a test assembly.

[0035] The test body 10 includes a test cylinder 11 and a cover body 12. The test cylinder 11 has a test cavity inside, and the test cavity is used to store a sealing medium. The cover body 12 is covered on the test cylinder 11 to seal the test cavity. The cover body 12 and the test cylinder 11 are suitable for arranging a tested seal, that is, the tested seal is installed on the test body 10 in a normal way. The test body 10 can simulate the interface relationship with surrounding components in actual work.

[0036] The test body 10 can be adaptively adjusted according to the application scenario of the seal, and the structure of the test body 10 is different in different application scenarios. During the test, according to different application scenarios, parameters such as vibration frequency, amplitude, direction, temperature, pressure, etc. are pre-set to ensure that the test environment can reproduce the expected working conditions.

[0037] The vibration component includes 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. The vibration platform 20 needs to have good rigidity and flatness in order to accurately transmit vibration energy. The vibration platform 20 can be fixed to the ground or the test bench by fasteners such as bolts to ensure that the vibration platform 20 remains stable. Among them, the preset installation position can be set to the ground or the table top of the test bench according to 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.

[0038] The test assembly includes a sensor and a control component (neither of which is shown in the figure). The sensor is electrically connected to the control component. The sensor is used to monitor the sealing of the test chamber and feed back the corresponding monitoring information to the control component.

[0039] The types of sensors may include pressure sensors, displacement sensors, vibration sensors, stress / strain sensors, and optical sensors. Among them, pressure sensors are used to monitor the static and dynamic pressures on both sides of the seal, check for leakage, and confirm the sealing effect. Displacement sensors are used to monitor the displacement changes of seals under force or vibration, and detect their recovery ability and deformation. Vibration sensors such as accelerometers capture information such as vibration frequency and amplitude to help analyze the behavioral characteristics of seals under multi-level vibration. Stress / strain sensors are used to quantify internal or surface stress distribution to understand the pressure bearing capacity and fatigue state of seals. Optical sensors are used to observe whether there are cracks, damage, etc. on the appearance of the seal through visual or infrared imaging. The sensor is selected according to the adaptability of the actual use scenario. Regardless of the type of sensor selected, each sensor is electrically connected to the control component to feed back the monitoring information to the control component in real time, which is recorded and analyzed by the control component.

[0040] Among them, the control component is mainly used to receive information, process information and issue instructions. The control component can be a programmable logic controller (PLC), a microprocessor or microcontroller (MCU) and a central processing unit (CPU), etc.

[0041] It is understandable that the multi-stage vibration seal performance test device provided in the embodiment of the present invention can be used to simulate the use state of the seal under complex working conditions by setting a vibration component composed of a vibration platform 20 and a multi-stage vibration mechanism 30 and a test assembly to verify the reliability and stability of the seal under complex vibration conditions. Moreover, the entire vibration component is composed of a mechanical structure with high structural strength, which can make the vibration parameters (frequency, amplitude, phase) highly adjustable, accurately simulate various vibration modes from low frequency to high frequency, and meet different test requirements; and allow the bearing of large weight samples, which is suitable for vibration testing of heavy equipment and large structural parts.

[0042] Continue reading Figures 1 to 4 In some embodiments of the present invention, the multi-stage vibration mechanism 30 includes a driving component, a rotating component 31 , a first vibration component 32 and a second vibration component 33 .

[0043] 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 suitable for abutting 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 suitable for abutting 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.

[0044] This is equivalent to the embodiment of the present invention using one driving component (such as a motor) to control multiple groups of vibration units, that is, using one motor to control the rotating component 31, the first vibration component 32 and the second vibration component 33 to perform graded vibration. This arrangement can not only reduce the number of motors, but also make the structure of the multi-stage vibration seal performance test device more compact and reduce the floor space. Moreover, the use of a unified power source for multiple vibration components facilitates precise synchronization between multiple transmission components and improves overall coordination and smoothness; at the same time, unified control can optimize the vibration mode, reduce noise pollution and mechanical wear, avoid resonance effects caused by the independent operation of multiple motors, and further improve the test accuracy.

[0045] Continue reading Figure 4 In some embodiments of the present invention, the rotating assembly 31 includes a rotating shaft 311, a first rotating toothless gear 312, a second rotating toothless gear 313, a first transmission gear 314, a second transmission gear 315, and a third transmission gear 316. The first rotating toothless gear 312 is disposed at one end of the rotating shaft 311, and the second rotating toothless 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 is meshed with the second transmission gear 315, and the third transmission gear 316 is suitable for meshing with the second rotating toothless gear 313.

[0046] The rotating shaft 311 is used as the main body for bearing and transmitting torque, and the two ends of the rotating shaft 311 are respectively provided with a first rotating toothless gear 312 and a second rotating toothless gear 313. The first rotating toothless gear 312 can achieve timed intermittent contact with other gears or toothless gears through the toothless design. The second rotating toothless gear 313 is also provided with a toothless setting, and can form a similar timed contact with the third transmission gear 316.

[0047] When the power source (motor) drives the rotating shaft 311 to rotate, the rotating shaft 311 drives the first rotating toothless gear 312 and the second rotating toothless gear 313 to rotate synchronously. As the rotating shaft 311 continues to rotate, the notch on the second rotating toothless gear 313 periodically contacts the third transmission gear 316 to achieve intermittent power output. The second transmission gear 315 is located between the first transmission gear 314 and the third transmission gear 316, and plays a role in 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, thereby achieving the rotational movement of the test cylinder 11.

[0048] By precisely designing the shapes of the first rotating toothless gear 312 and the second rotating toothless gear 313, it is possible to achieve timed start and pause of power transmission and precisely control the vibration frequency and duration. The intermittent meshing between the toothless gears enables the vibration platform 20 to flexibly change the vibration mode according to actual needs and adapt to different experimental requirements or working conditions.

[0049] 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 arranged at a preset installation position, the first vibration bevel gear 321 is suitable for meshing with the first rotating toothless gear 312, the cam 322 is coaxially arranged with the first vibration bevel gear 321, the push rod 323 is guided and arranged on the vibration platform 20, the push rod 323 is located on the rotation path of the cam 322, and the push rod 323 is suitable for performing linear reciprocating motion with the cam 322, so that the test cylinder 11 moves in the vertical direction.

[0050] Among them, the first vibration bevel gear 321 can be installed in a preset installation position (such as the ground or the table top of a laboratory table) through a transmission shaft arranged on the bearing seat. The first vibration bevel gear 321 is a component of the first vibration component 32 that directly receives the rotational power. The first vibration bevel gear 321 is meshed with the first rotating toothless gear 312 to achieve intermittent input of power. The cam 322 is coaxially arranged with the first vibration bevel gear 321, and uses its own contour surface to interact with the push rod 323, so that the push rod 323 generates linear reciprocating motion. The push rod 323 can directly abut the bottom surface of the test cylinder 11, or it can indirectly lift the test cylinder 11 through an intermediate structure, so that the test cylinder 11 vibrates in the vertical direction with the movement of the push rod 323.

[0051] When the first vibration bevel gear 321 is meshed with the first rotating toothless gear 312, the rotational power of the first rotating toothless gear 312 is transmitted to the first vibration assembly 32, and the rotation of the first vibration bevel gear 321 drives the coaxially arranged cam 322 to rotate together, and the profile of the cam 322 and the contact point of the push rod 323 are constantly changing. As the profile surface of the cam 322 changes, the push rod 323 is subjected to an outward force and performs a linear reciprocating motion along the pre-designed guide groove 3323-1, and the linear motion of the push rod 323 is directly or indirectly converted into the vibration of the test cylinder 11 along the vertical direction.

[0052] The shape of the cam 322 of the embodiment of the present invention determines the stroke and speed of the push rod 323. By optimizing the shape design of the cam 322, accurate vibration frequency and amplitude adjustment 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.

[0053] In some embodiments of the present invention, the first vibration component 32 also includes a sleeve 324, which is sleeved on the fixed shaft 111 and abuts against the bottom wall of the test cylinder 11; the sleeve 324 is provided with a limiting flange, and the push rod 323 is suitable for abutting against the limiting flange to drive the test cylinder 11 to move upward in the vertical direction through the sleeve 324.

[0054] In the embodiment of the present invention, the push rod 323 is in indirect contact with the bottom wall of the test cylinder 11 through the shaft sleeve 324, and the linear motion of the push rod 323 is indirectly converted into the upward vibration of the test cylinder 11 along the vertical direction through the shaft sleeve 324. When the push rod 323 cancels the force applied to the shaft sleeve 324, the shaft sleeve 324 and the test cylinder 11 fall freely due to gravity.

[0055] 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 arranged at a preset installation position, and the second vibration bevel gear 331 is suitable for meshing with the first rotating toothless gear 312. The horizontal swing module 332 is penetrated at the rotation center of the support shaft of the vibration platform 20 and is clamped to the outer circumferential surface of the test cylinder 11. The transmission component 333 is respectively connected to the transmission shaft of the second vibration bevel gear 331 and the horizontal swing module 332.

[0056] Among them, the second vibration bevel gear 331 can be installed in a preset installation position (such as the ground or the table top of the laboratory table) through a transmission shaft arranged on the bearing seat. The second vibration bevel gear 331 serves as the power receiving end of the second vibration component 33. The second vibration bevel gear 331 is meshed with the first rotating toothless gear 312 to achieve intermittent input of power. The horizontal swing module 332 directly acts on the outer circumferential surface of the test cylinder 11 to achieve lateral vibration of the test cylinder 11 and enhance the multi-dimensional simulation of experimental conditions. The transmission component 333 connects the second vibration bevel gear 331 and the horizontal swing module 332 at a certain distance, converts the rotational kinetic energy of the second vibration bevel gear 331 into lateral swing potential energy, and ensures efficient transmission of vibration.

[0057] When the second vibrating bevel gear 331 meshes with the first rotating toothless gear 312, it receives power from the first rotating toothless gear 312 and starts to rotate. The transmission component 333 (such as a chain component, a belt component or a coupling, etc.) converts the rotational motion of the second vibrating bevel gear 331 into 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 is combined with the vertical vibration to form a composite vibration field in three-dimensional space, simulating the complex mechanical environment that the test cylinder 11 is subjected to in actual working conditions.

[0058] 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 vibration bevel gear 331, the second pulley 3332 is installed in a preset installation position through a transmission shaft arranged on the bearing seat, and the transmission belt 3333 is coordinated with the first pulley 3331 and the second pulley 3332 for transmission.

[0059] Figure 5 It is a schematic diagram of the layout structure decomposition of a multi-stage vibration seal performance test device provided in an embodiment of the present invention. Figure 6 It is a structural schematic diagram of a multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0060] See also Figure 5 and Figure 6 In some embodiments of the present invention, the horizontal swing module 332 includes a horizontal swing toothless gear 3321, a swing member 3322 and a guide member 3323. The horizontal swing toothless gear 3321 is connected to the transmission member 333; the swing member 3322 is arranged 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.

[0061] The swinging member 3322 is provided with a slot 3322-1 matching the outer circumferential surface of the test cylinder 11, the slot 3322-1 abuts against the outer circumferential surface of the test cylinder 11, and the main body of the swinging member 3322 abuts against the groove wall of the side wall groove of the vibration platform 20. The swinging member 3322 is provided with a swinging gear ring 3322-2, and the swinging gear ring 3322-2 is suitable for meshing with the horizontal swinging toothless gear 3321; the guide member 3323 is embedded in the supporting body 23, and the guide member 3323 is provided with a guide groove 3323-1 for the horizontal movement of the swinging member 3322.

[0062] Among them, the horizontal swing module 332 is the core part of the second vibration component 33, and the horizontal swing toothless gear 3321 is coaxially arranged with the second pulley 3332. As the power receiving end of the horizontal swing module 332, the horizontal swing toothless gear 3321 can coordinate with the vibration component through a specific toothless design to ensure accurate energy transmission. The swing member 3322 is provided with a slot 3322-1 that matches the outer diameter of the test cylinder 11, which can achieve a close fit with the test cylinder 11, ensuring that the vibration is directly and evenly transmitted to the test cylinder 11, so as to reduce energy loss and improve vibration efficiency. The guide member 3323 is firmly embedded in the fixed sleeve of the support body 23 to act as a guide. By providing a guide groove 3323-1 on the guide member 3323, the movement trajectory of the swing member 3322 is limited to ensure that the swing member 3322 only swings in the expected horizontal direction. At the same time, the design of the guide member 3323 can rotate around the support shaft to serve the above functions.

[0063] It should be noted that the guide member 3323 may not be provided, and the guide groove 3323 - 1 may be directly provided on the fixed sleeve of the support body 23 to limit the movement trajectory of the swing member 3322 .

[0064] When the horizontal swing toothless gear 3321 receives the rotational power from the second pulley 3332 of the transmission component 333 and starts to rotate, the horizontal swing toothless gear 3321 meshes with the gear ring on the swing member 3322, converting the rotational motion into the lateral vibration of the swing member 3322. Under the constraint of the guide member 3323, the swing member 3322 performs a controlled horizontal swing along the guide groove 3323-1 to ensure that the vibration is stable and orderly. At this time, the clamping groove 3322-1 at the end of the swing member 3322 tightly clamps the test cylinder 11, transfers the lateral vibration energy to the test cylinder 11, and makes the test cylinder 11 realize lateral vibration.

[0065] In the embodiment of the present invention, the swing angle and frequency can be controlled by accurately defining the gear ratio and the guide path to achieve a highly accurate vibration effect. In addition, 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.

[0066] Continue reading Figures 1 to 6 In some embodiments of the present invention, the multi-stage vibration mechanism 30 also 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.

[0067] Equivalently, the embodiment of the present invention provides an additional swinging motion, so that the test cylinder 11 can not only realize rotational vibration, up and down vibration, and horizontal vibration, but also realize left and right swing around the rotation center of the vibration platform 20, which is combined with the aforementioned vibration to form a richer three-dimensional vibration mode, simulate a complex real environment, realize the vibration of the test cylinder 11 in the three axes of XYZ, and approach the complex vibration state of nature.

[0068] Figure 7 This is one of the front views (first position) of the multi-stage vibration seal performance test device provided in an embodiment of the present invention. Figure 8 This is the second front view (second position) of the multi-stage vibration seal performance test device provided in an embodiment of the present invention.

[0069] Continue reading Figures 1 to 4 , and also see Figure 7 and Figure 8 In some embodiments of the present invention, the third vibration component 34 includes an extension shaft 341, a third vibration toothless gear 342, a vibration gear ring 343 and a connecting rod 344, the vibration gear ring 343 is provided with a connecting portion, one end of the connecting rod 344 is hinged to the connecting portion, and the other end of the connecting rod 344 is hinged to the outer wall of the vibration platform 20.

[0070] The extension shaft 341 is connected to the rotation shaft 311 , and both the extension shaft 341 and the rotation shaft 311 are suitable for moving in a vertical direction to switch between a first position and a second position.

[0071] It should be noted that the extension shaft 341 and the rotating shaft 311 can be one shaft, which is equivalent to dividing one shaft into two parts for the convenience of distinction from the above embodiments; of course, the extension shaft 341 and the rotating shaft 311 can also be two independent parts connected to each other through a coupling, etc. Regardless of the configuration, the extension shaft 341 and the rotating shaft 311 always keep synchronous movement in the vertical direction.

[0072] Among them, at least one of the extension shaft 341 and the rotation shaft 311 can be installed on a linear drive module (not shown in the figure) through a bearing seat, and 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 at a suitable position of the experimental table. That is, the extension shaft 341 and the rotation shaft 311 realize position switching through the linear drive module.

[0073] like Figure 7As shown, when in the first position, the third vibration toothless gear 342 is completely separated from the vibration ring gear 343, that is, the vibration ring gear 343 does not participate in the movement, and the third vibration component 34 does not cut into the vibration system. At this time, the second rotating toothless gear 313 is suitable for meshing with the third transmission gear 316 to maintain conventional rotational vibration, and the first rotating toothless gear 312 is suitable for meshing with the first vibration bevel gear 321 or the second vibration bevel gear 331 to achieve the vibration of the test cylinder 11 in the vertical direction and the horizontal direction.

[0074] like Figure 8 As shown, when in the second position, the second rotating toothless gear 313 is completely separated from the third transmission gear 316, that is, the conventional rotational vibration is interrupted, and the first rotating toothless gear 312 is completely separated from the first vibration bevel gear 321 and the second vibration bevel gear 331, that is, the original vibration mode is stopped; at this time, the third vibration toothless gear 342 is meshed with the vibration ring gear 343, and the vibration ring gear 343 moves to excite the swing of the vibration platform 20 through the connecting rod 344, thereby driving the test cylinder 11 to swing, introducing the swing mode of the third vibration component 34.

[0075] In the embodiment of the present invention, the swing mode of the third vibration component 34 can be inserted into the vibration mode described above at any time by controlling the moving path of the linear drive module, thereby realizing any combination of multiple vibration modes.

[0076] 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 .

[0077] The first vibration body 21 has a first vibration cavity 211 in its internal structure, and the shape of the first vibration cavity 211 matches the shape of the test cylinder 11. The test cylinder 11 is arranged in the first vibration cavity 211 to ensure that the vibration force is evenly transmitted to the test cylinder 11. The second vibration body 22 has a limit cavity 221 in its internal structure, and the shape of the limit cavity 221 matches the shape of the first vibration body 21. The first vibration body 21 is arranged in the limit cavity 221. Both sides of the first vibration body 21 are limited, and it can swing back and forth in the horizontal direction in the limit cavity 221, that is, the first vibration body 21 is allowed to vibrate in the horizontal direction in the limit cavity 221.

[0078] The two support bodies 23 are symmetrically arranged on opposite sides of the second vibration body 22, and each support body 23 is suitable for being fixed to a preset installation position (the ground or the table top of a laboratory table) 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.

[0079] This is equivalent to the first vibration body 21 directly fitting with the test cylinder 11 through the built-in first vibration cavity 211, transmitting the vibration to the test cylinder 11 without loss. The second vibration body 22, as an external frame, surrounds the first vibration body 21 through the limit cavity 221 to ensure its stable position while allowing the necessary vibration freedom. Then, with the help of two supporting bodies 23, the second vibration body 22 can swing around the axis within a specific range, adding a lateral vibration mode to enrich the vibration mode.

[0080] That is, when the vibration platform 20 vibrates, the first vibration body 21, because it is assembled in the second vibration body 22, will swing around the support shaft with the second vibration body 22, and the slot 3322-1 set at the end of the swinging member 3322 abuts against the outer circumferential surface of the test cylinder 11, and the swinging member 3322 will also swing therewith. Since the swinging member 3322 is located at the rotation center of the support shaft, when the second vibration body 22 swings around the support shaft, the swinging member 3322 will not interfere with the swinging of the second vibration body 22 around the support shaft.

[0081] The embodiment of the present invention can adapt to test cylinders 11 of different sizes and weights by adjusting the angle and length of the support body 23 .

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage vibration seal performance test device, characterized in that: include: The test body comprises a test cylinder and a cover, wherein the test cylinder has a test cavity inside, the cover is disposed on the test cylinder to seal the test cavity, and a seal to be tested is disposed between the cover and the test cylinder; The vibration component comprises a vibration platform and a multi-stage vibration mechanism, wherein the vibration platform is suitable for being fixed to a preset installation position, the test cylinder is embedded in the vibration platform, and the multi-stage vibration mechanism is connected to the vibration platform and is suitable for driving the test cylinder through the vibration platform to simulate a multi-stage vibration condition; The test assembly comprises a sensor and a control component. The sensor is electrically connected to the control component. The sensor is used to monitor the sealing of the test cavity and feed back corresponding monitoring information to the control component.

2. The multi-stage vibration seal performance test device according to claim 1, characterized in that: The multi-stage vibration mechanism includes a driving assembly, a rotating assembly, a first vibration assembly, and a second vibration assembly; The rotating assembly is connected to the test cylinder and is used to drive the test cylinder to rotate; the first vibrating assembly is suitable for abutting the test cylinder and is used to drive the test cylinder to vibrate in a vertical direction; the second vibrating assembly is suitable for abutting the test cylinder and is used to drive the test cylinder to swing in a horizontal direction; The driving component is connected to any one of the rotating component, the first vibrating component, and the second vibrating component, and is used to drive the rotating component, the first vibrating component, and the second vibrating component to perform graded vibration.

3. The multi-stage vibration seal performance test device according to claim 2, characterized in that: The rotating assembly includes a rotating shaft, a first rotating toothless gear, a second rotating toothless gear, a first transmission gear, a second transmission gear and a third transmission gear; The first rotating toothless gear is disposed at one end of the rotating shaft, and the second rotating toothless gear is disposed at the other end of the rotating shaft; The first transmission gear is fixed to the fixed shaft of the test cylinder, the second transmission gear and the third transmission gear are coaxially arranged on the vibration platform, the first transmission gear is meshed with the second transmission gear, and the third transmission gear is suitable for meshing with the second rotating toothless gear.

4. The multi-stage vibration seal performance test device according to claim 3, characterized in that: The first vibration assembly includes a first vibration bevel gear, a cam and a push rod; The first vibration bevel gear is arranged at a preset installation position, the first vibration bevel gear is suitable for meshing with the first rotating toothless gear, the cam is coaxially arranged with the first vibration bevel gear, the push rod guide is arranged on the vibration platform, the push rod is located on the rotation path of the cam, and the push rod is suitable for performing linear reciprocating motion with the cam so that the test cylinder moves in a vertical direction.

5. The multi-stage vibration seal performance test device according to claim 4, characterized in that: The first vibration assembly also includes a sleeve, which is sleeved on the fixed shaft and abuts against the bottom wall of the test cylinder; the sleeve is provided with a limiting flange, and the push rod is suitable for abutting against the limiting flange to drive the test cylinder to move upward in the vertical direction through the sleeve.

6. The multi-stage vibration seal performance test device according to claim 3, characterized in that: The second vibration assembly includes a second vibration bevel gear, a horizontal swing module and a transmission component; The second vibration bevel gear is arranged at a preset installation position, and the second vibration bevel gear is suitable for meshing with the first rotating toothless gear. The horizontal swing module is passed through the vibration platform and clamped to the outer circumferential surface of the test cylinder. The transmission component is respectively connected to the transmission shaft of the second vibration bevel gear and the horizontal swing module.

7. The multi-stage vibration seal performance test device according to claim 6, characterized in that: The horizontal swing module comprises a horizontal swing toothless gear, a swing member and a guide member; The horizontal swing toothless gear is connected to the transmission component; The swinging member is provided with a slot matching the outer circumferential surface of the test cylinder, the slot abuts against the outer circumferential surface of the test cylinder, and the main body of the swinging member abuts against the groove wall of the groove on the side wall of the vibration platform; the swinging member is provided with a swinging gear ring, and the swinging gear ring is suitable for meshing with the horizontal swinging toothless gear; The guide member is embedded in the vibration platform, and the guide member is provided with a guide groove for allowing the swing member to move horizontally.

8. The multi-stage vibration seal performance test device according to any one of claims 3 to 7, characterized in that: The multi-stage vibration mechanism also 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 to drive the test cylinder to swing.

9. The multi-stage vibration seal performance test device according to claim 8, characterized in that: The third vibration assembly includes an extension shaft, a third vibration toothless gear, a vibration gear ring and a connecting rod, the vibration gear ring is provided with a connecting portion, one end of the connecting rod is hinged to the connecting portion, and the other end of the connecting rod is hinged to the outer side wall of the vibration platform; The extension shaft is connected to the rotation shaft, and both the extension shaft and the rotation shaft are suitable for moving in a vertical direction to switch between a first position and a second position; In the first position, the third vibrating toothless gear is completely separated from the vibrating gear ring, the second rotating toothless gear is suitable for meshing with the third transmission gear, and the first rotating toothless gear is suitable for meshing with the first vibrating bevel gear or the second vibrating bevel gear; In the second position, the second rotating toothless gear is completely separated from the third transmission gear, the first rotating toothless gear is completely separated from the first vibration bevel gear and the second vibration bevel gear; and the third vibration toothless gear is meshed with the vibration ring gear.

10. The multi-stage vibration seal performance test device according to any one of claims 1 to 7, characterized in that: The vibration platform includes a first vibration body, a second vibration body and two supporting bodies; A first vibration cavity is formed inside the first vibration body, the shape of the first vibration cavity matches the shape of the test cylinder, and the test cylinder is arranged in the first vibration cavity; The second vibration body has a limiting cavity in its internal structure, the shape of the limiting cavity matches the shape of the first vibration body, the first vibration body is arranged in the limiting cavity, the two sides of the first vibration body are limited, and the first vibration body is suitable for reciprocating in the limiting cavity along the horizontal direction; The two support bodies are symmetrically arranged on opposite sides of the second vibration body, each of the support bodies is suitable for being fixed to a preset installation position, and the second vibration body is guided and matched with each of the support bodies and is suitable for swinging along the support axis of the support body.

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