CN116990169A - Adjustable sealing element rebound recovery testing device - Google Patents
Adjustable sealing element rebound recovery testing device Download PDFInfo
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- CN116990169A CN116990169A CN202311007531.9A CN202311007531A CN116990169A CN 116990169 A CN116990169 A CN 116990169A CN 202311007531 A CN202311007531 A CN 202311007531A CN 116990169 A CN116990169 A CN 116990169A
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000000903 blocking effect Effects 0.000 claims description 39
- 238000009423 ventilation Methods 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to the technical field related to a testing device and discloses an adjustable sealing piece rebound recovery testing device, which aims to solve the problems that clamping of different workpieces cannot be adapted and rebound data are manually clamped and have deviation, a plurality of positioning ejector blocks extend out of the side parts of a pressing plate, and the end parts of the positioning ejector blocks are communicated through a liquid storage cavity in the pressing plate, so that when the positioning ejector blocks are pressed and jacked onto a sealing piece sample, the positioning ejector blocks can be autonomously adapted to the shape of the workpieces, so that the workpieces with different outer side shapes can be detected, meanwhile, the positioning ejector blocks can be used for hanging and extruding the samples, so that after the compression of the samples is completed, the rebound value of the samples can be quickly known only by observing when the samples fall between the positioning ejector blocks and a sample clamp, the phenomenon that stress change occurs in the samples due to manual clamping is avoided, and the effects that the rebound value measurement is inaccurate due to the change of the stress of the samples due to the manual clamping are realized.
Description
Technical Field
The application relates to the technical field related to testing devices, in particular to an adjustable sealing element rebound recovery testing device.
Background
The rebound resilience test of the sealing element refers to the test of elastic resilience performance of the sealing element, and aims to evaluate the rebound resilience of the sealing element after being stressed, and in the use process, the sealing element can be influenced by factors such as pressure, temperature and the like, so that the elastic resilience of the sealing element is reduced, and the sealing effect is influenced.
In the rebound test process of the sealing element, the test piece is compressed to the working range and locked mainly according to the relative clamping force formed between the pressing plate and the sample clamp, and is taken out after the test time is reached, the distance difference between the test piece before and after unloading is finally measured, and the rebound resilience of the test piece is detected. However, in the practical application process, as the pressing plate is mostly planar, the pressing plate is limited to press the sealing element sample only in a planar mode, and samples with different shapes cannot be tested, for example, the sealing element with an arc surface at the edge cannot be suitable for various sample detection; meanwhile, after the test sample is pressed, the test sample needs to be manually taken out and measured, and when the compressed test sample is manually clamped, the internal stress of the test sample can be changed, so that the rebound state of the test sample is changed, and the rebound data has certain measurement deviation.
Disclosure of Invention
The application provides an adjustable sealing element rebound recovery testing device which has the advantages of adapting to clamping of different workpieces and avoiding inaccurate rebound value measurement caused by the change of stress of a test piece due to manual clamping, and is used for solving the problems that the clamping of different workpieces cannot be adapted and rebound data are biased due to manual clamping in the prior art.
In order to achieve the above purpose, the application adopts the following technical scheme: an adjustable seal rebound recovery testing device comprising: the device comprises an instrument base, wherein a vertical support fixed on the surface of the instrument base can enable a pressing plate to move up and down and be fixed at a required height, a sample clamp positioned on one side of the pressing plate is movably arranged on the surface of the instrument base, a sample table for placing a test piece is fixedly connected to the side part of the sample clamp, a movable screw rod is movably arranged on the surface of the instrument base, the movable screw rod rotates through a handle fixed at the end part to enable the sample table and the sample clamp to move towards the direction of the pressing plate, and an electronic ruler which moves along with the sample table is arranged on the instrument base; the positioning ejector block is movably arranged at the end part of the pressurizing plate, and the end part of the positioning ejector block faces the direction of the sample clamp; the liquid storage cavity is formed in the inner side of the pressurizing plate, the ends of the positioning jacking blocks are communicated, a liquid medium is placed in the liquid storage cavity, and the ends of the positioning jacking blocks are jacked on the test piece to be adaptively clamped according to the outer side shape of the test piece.
Further, the number of the positioning jacking blocks is at least seven, and the positioning jacking blocks are arranged at the end part of the pressing plate at equal angles.
Further, the inside movable mounting of pressurization board with hold the communicating pressure boost piece in liquid chamber, and the one end fixedly connected with pressure boost pushing spring of pressure boost piece.
Further, the exhaust cavity is arranged at the end part of the pressurizing block and the inner side of the pressurizing plate, the pressurizing pushing spring is positioned in the exhaust cavity, the piston column is movably arranged in the middle of the pressurizing plate, the top end of the piston column and the middle of the pressurizing plate form an adjusting cavity, the surface of the piston column is fixedly provided with the trigger spring positioned in the adjusting cavity, the end part of the trigger spring is fixedly connected with the trigger rod, the end part of the trigger rod is positioned in the exhaust cavity, the bottom side of one end of the pressurizing block is provided with an oblique angle, the bottom end of the piston column is fixedly provided with the limiting rod, the bottom end of the limiting rod is positioned at the outer side of the positioning top block, the bottom end of the piston column is fixedly provided with the separating spring positioned at the outer side of the limiting rod, the outer side of the positioning top block is provided with an inclined plane, the upper part of the inclined plane is positioned at one side of the liquid storage cavity, the inner side of the pressurizing plate is provided with the air conveying channel, and the end part of the pressurizing plate is fixedly provided with the unidirectional sounding whistle positioned in the air conveying channel, and when the air flow is discharged outwards from the air conveying channel, unidirectional sounding whistle can sound.
Further, the end of the pressing plate is provided with an air vent communicated with the air exhaust cavity, the inner side of the pressing plate is movably provided with an air blocking plunger, the end of the air blocking plunger is communicated with the air exhaust cavity, the bottom of the air blocking plunger is fixedly provided with a return pushing spring, the return pushing spring enables the air blocking plunger to always have a trend of moving towards the air exhaust cavity, the outer side of the air blocking plunger is provided with an air permeable ring groove, the end of the pressing plate is provided with a damping hole communicated with a cavity at the bottom of the air blocking plunger, the end of the pressing plate is provided with a one-way air valve positioned above the damping hole, and the one-way air valve realizes outward one-way circulation of air flow at the bottom of the air blocking plunger from the one-way air valve.
Further, the end part of the positioning top block is semicircular.
Further, the inner side of the pressing plate is movably provided with a pressure release push rod in the exhaust cavity, the bottom of the pressure release push rod is fixedly connected with a pressure release push pipe corresponding to the air blocking plunger, and the top of the pressure release push rod is fixedly provided with a reset button.
Further, any one of the positioning top blocks is extruded to press towards the liquid storage cavity, so that the pressurizing block is separated from the trigger rod.
The application has the following beneficial effects:
according to the adjustable sealing element rebound recovery testing device provided by the application, the plurality of positioning jacking blocks extend out of the side part of the pressing plate, and the end parts of the positioning jacking blocks are communicated through the liquid storage cavity in the pressing plate, so that when the positioning jacking blocks are pressed and jacked onto a sealing element sample, the positioning jacking blocks can be independently adapted to the shapes of workpieces, workpieces with different outer side shapes can be detected, meanwhile, the positioning jacking blocks can be used for hanging and extruding the test piece, so that after the test piece is pressed, the rebound value of the test piece can be quickly known only by observing when the test piece falls between the positioning jacking blocks and the test piece clamp, the phenomenon that the stress change occurs in the test piece due to the participation of manual clamping is avoided, and the effect of inaccurate rebound value measurement caused by the change of the stress of the test piece due to the manual clamping is realized.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The application may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view of the overall appearance;
FIG. 2 is a perspective view of a pressure plate;
FIG. 3 is a schematic cross-sectional view of a middle portion of the pressure plate;
fig. 4 is an enlarged structural view of a in fig. 3.
In the figure: 1. an instrument base; 2. a vertical support; 3. a pressing plate; 300. a liquid storage cavity; 301. a regulating chamber; 302. an air delivery channel; 303. an exhaust chamber; 4. a reset button; 5. a sample stage; 6. a sample holder; 7. a handle; 8. an electronic ruler; 9. a movable screw rod; 10. ventilation holes; 11. one-way sounding whistle; 12. a one-way air valve; 13. a damping hole; 14. positioning a top block; 15. pressurizing the block; 16. a trigger lever; 17. a trigger spring; 18. a pressurizing push spring; 19. a return spring; 20. a release spring; 21. a limiting rod; 22. a piston column; 23. a pressure release push rod; 24. a pressure release push tube; 25. a gas barrier plunger; 250. and a ventilation ring groove.
Description of the embodiments
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Examples
Referring to fig. 1-3, an instrument base 1 is used for supporting the whole components, a vertical support 2 fixed on the surface of the instrument base 1 realizes that a pressure plate 3 can move up and down and is fixed at a required height, a sample clamp 6 positioned at one side of the pressure plate 3 is movably mounted on the surface of the instrument base 1, and the pressure plate 3 and the sample clamp 6 move relatively, so that extrusion of a sealing piece sample is realized, a sample table 5 for placing the sample is fixedly connected to the side part of the sample clamp 6, a movable screw rod 9 is movably mounted on the surface of the instrument base 1, the movable screw rod 9 rotates through a handle 7 fixed at the end part, so that the sample table 5 and the sample clamp 6 move towards the pressure plate 3, an electronic ruler 8 moving along with the sample table 5 is arranged on the instrument base 1, so that the stroke amount of the sample table 5 can be measured through the electronic ruler 8, and is also a conventional detection mode of the current sealing piece sample, the pressure plate 3 is mainly adjusted to a proper height by using the vertical support 2, then the movable screw rod 9 is driven to rotate according to the handle 7, the movable screw rod 9 is forced to bear the measured sample, the sealing piece is compressed, the sample is recovered, and the test piece is recovered after the compression time is obtained, and the test piece is measured.
Because the end of the pressing plate 3 is mostly planar, in order to accommodate the compression of workpieces with different shapes, and simultaneously ensure that the compression force applied to the sides of test pieces with different shapes is in a relatively constant state, in this embodiment, the end of the pressing plate 3 is movably provided with at least seven positioning top blocks 14 arranged towards the direction of the sample clamp 6, and the positioning top blocks 14 are arranged at equal angles at the end of the pressing plate 3, the inner side of the pressing plate 3 is provided with a liquid storage cavity 300, and the liquid storage cavity 300 realizes the communication of the ends of the positioning top blocks 14, and meanwhile, the liquid storage cavity 300 is filled with a liquid medium, including but not limited to water.
When the device is used, a proper amount of liquid medium is placed in the liquid storage cavity 300, a test piece is extruded according to the positioning ejector block 14 and the sample clamp 6 by placing the test piece on the sample table 5, and as the positioning ejector block 14 is stressed, the end part of the positioning ejector block 14 pushes the liquid medium in the liquid storage cavity 300, so that the liquid medium in the liquid storage cavity 300 uniformly distributes force on the end part of the positioning ejector block 14 until each positioning ejector block 14 contacts the side part of the sample, the extending lengths of the positioning ejector blocks 14 are different, and when the pressurizing plate 3 is continuously pushed to pressurize the test piece, the liquid medium in the liquid storage cavity 300 can apply uniform pressure to the end part of each positioning ejector block 14, and the positioning ejector block 14 can adapt to the outer sides of different workpieces to perform profiling, so that the aim of compression detection on different test pieces is achieved.
In order to ensure that the pressing pressure is within a controllable range, in the first embodiment, the pressurizing block 15 which is communicated with the liquid storage cavity 300 is movably installed at the inner side of the pressing plate 3, and one end of the pressurizing block 15 is fixedly connected with the pressurizing push spring 18, so that after the pressure in the liquid storage cavity 300 is increased, the pressurizing block 15 is forced to be pressed to compress the pressurizing push spring 18, an external person only needs to observe the stroke of the pressurizing block 15 to know the compression amount of the pressurizing push spring 18, namely know the force applied to the positioning top block 14, and the pressure is adjusted to be within a proper range by rotating the handle 7, so that the compression strength is ensured to be within the controllable range.
Examples
On the basis of the first embodiment, referring to fig. 3 and 4, since the elastic member needs to stably apply pressure to the side of the test piece in the process of being compressed, the end of the pressurizing block 15 and the inner side of the pressurizing plate 3 are provided with the air discharging cavity 303, the pressurizing pushing spring 18 is positioned in the air discharging cavity 303, the middle part of the pressurizing plate 3 is movably provided with the piston column 22, the top end of the piston column 22 and the middle part of the pressurizing plate 3 form the adjusting cavity 301, the surface of the piston column 22 is fixedly provided with the trigger spring 17 positioned in the adjusting cavity 301, the end of the trigger spring 17 is fixedly connected with the trigger rod 16, the end of the trigger rod 16 is positioned in the air discharging cavity 303, and the bottom side of one end of the pressurizing block 15 is provided with an oblique angle, so when the pressurizing block 15 compresses the pressurizing pushing spring 18, the trigger rod 16 is pressed downwards by the oblique angle and the trigger spring 17 is compressed, the limiting rod 21 is fixedly arranged at the bottom end of the piston column 22, the bottom end of the limiting rod 21 is positioned at the outer side of the positioning ejector block 14, the disengaging spring 20 positioned at the outer side of the limiting rod 21 is fixedly arranged at the bottom end of the piston column 22, so that when the trigger rod 16 is pressed downwards, the disengaging spring 20 is compressed and pushes the limiting rod 21 to move towards the side part of the positioning ejector block 14, the outer side of the positioning ejector block 14 is provided with the oblique plane, the high part of the oblique plane is positioned at one side of the liquid storage cavity 300, meanwhile, the air conveying channel 302 which is used for communicating air flow in the adjusting cavity 301 with the outside is formed at the inner side of the pressing plate 3, the unidirectional sounding whistle 11 positioned in the air conveying channel 302 is fixedly arranged at the end part of the pressing plate 3, and when the air flow is discharged outwards from the air conveying channel 302, the unidirectional sounding whistle 11 can sound.
When the positioning top block 14 is not completely close to the outer side of the test piece in use, the liquid medium in the liquid storage cavity 300 only flows on the end part of the positioning top block 14, and after the positioning top block 14 is profiled, the liquid storage cavity 300 is continuously pressurized due to the extrusion of the pressing plate 3, at this time, the positioning top block 14 is gradually pressed into the liquid storage cavity 300, and at the same time, when the pressurizing block 15 approaches to the pressurizing push spring 18, the triggering rod 16 is pushed to press the triggering spring 17, and the piston column 22 is pushed to move downwards so that the limiting rod 21 is attached to the inclined surface of the positioning top block 14.
Along with the continuous retraction of the positioning ejector block 14 into the liquid storage cavity 300, the limiting rod 21 gradually moves towards the bottom of the inclined plane, and at the same time, the external air flow is gradually sucked into the adjusting cavity 301 through the air conveying channel 302, at the moment, the unidirectional sounding whistle 11 does not make a sound, if the positioning ejector block 14 is pressed on the outer side of the test piece, the end part of the positioning ejector block 14 is always subjected to resistance, the outward ejection phenomenon is avoided, until the pressurizing push spring 18 is compressed to the required pressure, and the positioning ejector block 14 is pressed on the outer side of the test piece under the same pressure.
If the position of the positioning top block 14 of the part deviates from the position of the test piece, the positioning top block 14 of the part is separated from the test piece, and the separated positioning top block 14 is forced to push outwards due to the pressure provided by the elastic force of the pressurizing push spring 18 in the liquid storage cavity 300, meanwhile, the limiting rod 21 pushes the piston column 22 upwards, so that the air flow in the adjusting cavity 301 is discharged to the unidirectional sounding whistle 11 through the air delivery channel 302, the unidirectional sounding whistle 11 sounds, an external person can know that the deviation occurs in the test piece pressing process according to the sounds, and the test piece needs to be pressed again after adjustment.
Examples
On the basis of the second embodiment, referring to fig. 2-4, the end of the pressure plate 3 is provided with the ventilation hole 10 communicated with the ventilation cavity 303, according to the ventilation hole 10, the air flow in the ventilation cavity 303 can be conveyed outwards, the air blocking plunger 25 is movably installed at the inner side of the pressure plate 3, the end of the air blocking plunger 25 is communicated with the ventilation cavity 303, the bottom of the air blocking plunger 25 is fixedly provided with the return pushing spring 19, the return pushing spring 19 enables the air blocking plunger 25 to always have a trend of moving towards the ventilation cavity 303, the outer side of the air blocking plunger 25 is provided with the ventilation ring groove 250, so that when the ventilation ring groove 250 is communicated with the air conveying channel 302, the air conveying channel 302 is blocked by the unidirectional sounding whistle 11, when the side of the air blocking plunger 25 is placed at the air conveying channel 302, the end of the pressure plate 3 is provided with the damping hole 13 communicated with the bottom cavity of the air blocking plunger 25, the end of the pressure plate 3 is provided with the unidirectional air valve 12 positioned above the damping hole 13, and the unidirectional 12 realizes unidirectional ventilation of the air blocking from the bottom of the air blocking plunger 25 to the unidirectional air valve 12.
When the test piece is used, the air blocking plunger 25 is jacked by the spring to block the air conveying channel 302 in a normal state, unlike the first embodiment and the second embodiment, the test piece in the third embodiment is clamped between the positioning jacking block 14 and the sample clamp 6 in a suspending manner, so that the pressurizing block 15 does not move in the profiling process of the positioning jacking block 14, and the working mode is the same as that of the second embodiment, wherein when the pressurizing block 15 extrudes the air flow in the air exhausting cavity 303, a part of the air flow can be output from the air holes 10, and the other part of the air flow can downwards press the air blocking plunger 25, so that the air permeable ring groove 250 is communicated with the air conveying channel 302, and therefore, when the positioning jacking block 14 stretches out in the process of clamping the test piece, the unidirectional sounding whistle 11 can generate sound to achieve the warning effect of the second embodiment, meanwhile, because the return pushing spring 19 can be compressed when the positioning jacking block 25 descends, and the air flow at the bottom of the air blocking plunger 25 can largely overflow from the unidirectional air valve 12, so that the air blocking plunger 25 can rapidly move downwards, and if the positioning jacking block 14 does not separate from the test piece 11 in the clamping process.
Finally, after the positioning top block 14 clamps the test piece to a certain strength, constant pressure pressing is needed for a period of time, meanwhile, the air flow in the air exhaust cavity 303 does not move downwards when pushing the air blocking plunger 25, the air flow in the damping hole 13 can slowly enter the bottom of the air blocking plunger 25 due to the elasticity of the return pushing spring 19, the air blocking plunger 25 is forced to move upwards until the air blocking plunger 25 seals the air conveying channel 302, and the air blocking plunger 25 can slowly move upwards due to the existence of the damping hole 13, so that when the handle 7 rotates, if the handle 7 stops temporarily in the middle, the air conveying channel 302 and the unidirectional sounding whistle 11 still can be in an on state, and the detection accuracy is ensured in real time.
When the air blocking plunger 25 is used for blocking the air delivery channel 302 and the constant pressure pressing is finished, the pressing plate 3 moves towards the direction far away from the test piece, the pressurizing block 15 is always pressed towards the liquid storage cavity 300 by the elastic force of the pressurizing pushing spring 18, the medium in the liquid storage cavity 300 can be pressed to convey the positioning ejector block 14 outwards, but the adjusting cavity 301 is completely sealed at this time, the limiting rod 21 cannot go upwards, the positioning ejector block 14 cannot extend outwards, at this time, the positioning ejector block 14 is continuously separated from the test piece along with the movement of the pressing plate 3, the test piece finally falls on the test piece table 5 from the position between the positioning ejector block 14 and the test piece clamp 6 along with the continuous increase of the distance, at this time, the compression rebound quantity of the test piece can be known only by checking the movement stroke of the pressurizing plate 3 through the electronic ruler 8, and the influence of the internal stress of the test piece on the test piece caused by the change of the stress during taking of personnel is avoided due to the fact that the test piece is directly measured after compression.
As can be seen from fig. 2, the end of the positioning top block 14 is semicircular, so when the positioning top block 14 is propped against the test piece, if the force borne by the test piece is not in the same horizontal line with the semicircular center of the end of the positioning top block 14, the test piece is separated from the end of the positioning top block 14 under the influence of the cambered surface, so that whether the test piece is normally stressed by horizontal pressure can be detected more accurately.
When the positioning jacking block 14 is completely separated from the test piece, the positioning jacking block 14 is still blocked by the limiting rod 21 and cannot extend completely, so that the pressurizing pushing spring 18 is always in a compressed state, the test piece is not easy to detect through the positioning jacking block 14 again, and in order to facilitate the return of the positioning jacking block 14, in the application, the pressure release pushing rod 23 is movably arranged on the inner side of the pressure applying plate 3 and in the air exhaust cavity 303, the pressure release pushing rod 23 is cuboid, the bottom of the pressure release pushing rod 23 is fixedly connected with pressure release pushing pipes 24 with the quantity corresponding to the air blocking plunger 25, the top of the pressure release pushing rod 23 is fixedly provided with reset buttons 4 penetrating through the pressure applying plate 3 and positioned on the outer side of the surface of the pressure applying plate 3, and the reset buttons 4 are pressed according to manual work, so that the air blocking plunger 25 is pressed downwards, the air transmission channel 302 is communicated with the outside, and the positioning jacking block 14 is easy to return.
As another way of resetting the positioning jack block 14, only one positioning jack block 14 needs to be manually pressed to press the positioning jack block 14 towards the liquid storage cavity 300, after the pressure in the liquid storage cavity 300 is increased, the pressurizing block 15 compresses the pressurizing push spring 18 again, the air flow in the air exhaust cavity 303 can downwards compress the return push spring 19 again, the air blocking plunger 25 is limited by the damping hole 13 when in ascending, the action is relatively slow, at the moment, the pressurizing block 15 moves towards the liquid storage cavity 300 by the elastic force of the pressurizing push spring 18, so that the pressurizing block 15 resets, the reset pressurizing block 15 does not press the trigger rod 16 any more, the limiting rod 21 ascends under the action of the elastic force of the release spring 20, so that the movement of the positioning jack block 14 is not limited, and the recovery of the positioning jack block 14 is realized, thereby being beneficial to copying compression through the positioning jack block 14 again.
Claims (8)
1. An adjustable seal rebound recovery testing device, comprising:
the device comprises an instrument base (1), wherein a vertical support (2) with a fixed surface of the instrument base (1) can enable a pressing plate (3) to move up and down and be fixed at a required height, a sample clamp (6) positioned on one side of the pressing plate (3) is movably arranged on the surface of the instrument base (1), a sample table (5) for placing a test piece is fixedly connected to the side part of the sample clamp (6), a movable screw (9) is movably arranged on the surface of the instrument base (1), the movable screw (9) rotates through a handle (7) with a fixed end part to enable the sample table (5) and the sample clamp (6) to move towards the pressing plate (3), and an electronic ruler (8) which moves along with the sample table (5) is arranged on the instrument base (1);
the positioning top block (14) is movably arranged at the end part of the pressurizing plate (3), and the end part of the positioning top block (14) faces the direction of the sample clamp (6);
the liquid storage cavity (300) is formed in the inner side of the pressing plate (3) and used for realizing that the end parts of the positioning jacking blocks (14) are communicated, and a liquid medium is placed in the liquid storage cavity (300), so that the end parts of the positioning jacking blocks (14) are propped against a test piece and are adaptively clamped according to the outer side shape of the test piece.
2. The device according to claim 1, wherein the number of the positioning jacks (14) is at least seven, and the positioning jacks (14) are arranged at equal angles at the end of the pressing plate (3).
3. The device for rebound recovery test of an adjustable sealing member according to claim 1, wherein a pressurizing block (15) communicated with the liquid storage cavity (300) is movably mounted on the inner side of the pressurizing plate (3), and one end of the pressurizing block (15) is fixedly connected with a pressurizing pushing spring (18).
4. The device for rebound recovery test of an adjustable sealing member according to claim 3, wherein the end of the pressurizing block (15) and the inner side of the pressurizing plate (3) are provided with an exhaust cavity (303), the pressurizing push spring (18) is positioned in the exhaust cavity (303), the middle part of the pressurizing plate (3) is movably provided with a piston column (22), the top end of the piston column (22) and the middle part of the pressurizing plate (3) form an adjusting cavity (301), the surface of the piston column (22) is fixedly provided with a trigger spring (17) positioned in the adjusting cavity (301), the end of the trigger spring (17) is fixedly connected with a trigger rod (16), the end of the trigger rod (16) is positioned in the exhaust cavity (303), the bottom side of one end of the pressurizing block (15) is provided with an oblique angle, the bottom end of the piston column (22) is fixedly provided with a limiting rod (21), the bottom end of the limiting rod (21) is positioned on the outer side of the positioning jack block (14), the bottom end of the piston column (22) is fixedly provided with a release spring (20) positioned on the outer side of the limiting rod (21), the end of the trigger rod (22) is fixedly provided with a trigger rod (17) positioned on the inner side of the positioning jack block (14), the inner side of the pressurizing plate (3) is provided with an inclined surface (300), the end part of the pressing plate (3) is fixedly provided with a unidirectional sounding whistle (11) positioned in the gas transmission channel (302), and when the air flow is discharged outwards from the gas transmission channel (302), the unidirectional sounding whistle (11) can make sound.
5. The device for rebound recovery test of an adjustable sealing member according to claim 4, wherein the end part of the pressure plate (3) is provided with an air vent (10) communicated with the air exhaust cavity (303), the inner side of the pressure plate (3) is movably provided with an air blocking plunger (25), the end part of the air blocking plunger (25) is communicated with the air exhaust cavity (303), the bottom of the air blocking plunger (25) is fixedly provided with a return pushing spring (19), the return pushing spring (19) enables the air blocking plunger (25) to always have a trend of moving towards the air exhaust cavity (303), the outer side of the air blocking plunger (25) is provided with an air permeable ring groove (250), the end part of the pressure plate (3) is provided with a damping hole (13) communicated with a cavity at the bottom of the air blocking plunger (25), the end part of the pressure plate (3) is provided with a one-way air valve (12) positioned above the damping hole (13), and the one-way air valve (12) realizes outward one-way ventilation of air flow at the bottom of the air blocking plunger (25) from the one-way air valve (12).
6. The device according to claim 5, characterized in that the end of the positioning jack (14) is semicircular.
7. The device for rebound recovery test of an adjustable sealing member according to claim 5, wherein a pressure release push rod (23) is movably mounted in the exhaust cavity (303) and inside the pressure application plate (3), a pressure release push tube (24) corresponding to the air blocking plunger (25) is fixedly connected to the bottom of the pressure release push rod (23), and a reset button (4) is fixedly mounted on the top of the pressure release push rod (23).
8. The device for rebound resilience testing of an adjustable sealing member according to claim 5, wherein any one of the positioning top blocks (14) is pressed towards the liquid storage cavity (300) by being pressed, so that the pressurizing block (15) is separated from the trigger rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311007531.9A CN116990169A (en) | 2023-08-11 | 2023-08-11 | Adjustable sealing element rebound recovery testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311007531.9A CN116990169A (en) | 2023-08-11 | 2023-08-11 | Adjustable sealing element rebound recovery testing device |
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| CN116990169A true CN116990169A (en) | 2023-11-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117629757A (en) * | 2024-01-26 | 2024-03-01 | 山东中程试验检测有限公司 | Building main body structure detection device and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117629757A (en) * | 2024-01-26 | 2024-03-01 | 山东中程试验检测有限公司 | Building main body structure detection device and detection method |
| CN117629757B (en) * | 2024-01-26 | 2024-04-23 | 山东中程试验检测有限公司 | Building main body structure detection device and detection method |
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