CN207036559U - A kind of whole O-shaped rubber ring tension test extension at break measuring device - Google Patents
A kind of whole O-shaped rubber ring tension test extension at break measuring device Download PDFInfo
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- CN207036559U CN207036559U CN201720707696.0U CN201720707696U CN207036559U CN 207036559 U CN207036559 U CN 207036559U CN 201720707696 U CN201720707696 U CN 201720707696U CN 207036559 U CN207036559 U CN 207036559U
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- connecting rod
- shaped connecting
- adapter
- extensometer
- whole
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Abstract
The utility model discloses a kind of whole O-shaped rubber ring tension test extension at break measuring device, it includes upper fixture（1）, lower clamp（2）, vertically arranged skid beam（3）, upper extensometer（4）With lower extensometer（5）, load part includes adapter（6）, preload ring（7）With U-shaped connecting rod（8）, adapter（6）Middle part be provided with external screw thread, preload ring（7）Through internal thread and adapter（6）External screw thread be connected and installed in adapter（6）On, axle wheel（10）Cylinder on offer annular groove（13）, U-shaped connecting rod（8）Bottom on be additionally provided with external screw thread, floral disc（11）With U-shaped connecting rod（8）External screw thread be connected and installed in U-shaped connecting rod（8）Bottom, and the boss for compressing bearing outer ring is provided with the end face of floral disc.The beneficial effects of the utility model are：Solve the problems, such as that existing whole O-shaped rubber ring tensile test at room temperature extension at break amount is difficult to accurately to measure, measurement accuracy is high, easy to operate.
Description
Technical field
It the utility model is related to a kind of whole O-shaped rubber ring tension test extension at break measuring device.
Background technology
Whole O-shaped rubber ring is in high pressure plays a kind of seal of sealing effectiveness because of the compression stress of material, close
It is mainly that mechanical performance determines by the resistance to pressure of whole O-shaped rubber ring material to seal effect.Whole O-shaped rubber ring tensile test at room temperature is to survey
One of common test of its fixed mechanical performance, it is mainly used in determining tensile strength and elongation at break.Its experiment process is：Drawing
Stretch on experimental rig after installation sample, sample stretching is carried out with certain rate of extension and finally obtains the experiment number of correlation
According to.Preferably technical scheme is that have minimum diameter rule by upper and lower two in existing whole O-shaped rubber ring tensile test at room temperature device
Axle wheel composition fixed and with ball bearing, when two wheels are close to each other, its centre-to-centre spacing can reach sufficiently small distance so as to
Sample is installed.Axle wheel is connected by various bindiny mechanisms with cupping machine, is connected usually using pin.Use above-mentioned stretching
Device can be good at carrying out the measure of whole O-shaped rubber ring tensile test at room temperature tensile strength, it can be difficult to Accurate Determining is pulled apart
Elongation.Its reason is：Elongation at break is the ratio between elongation increment and initial length when sample is stretched to fracture.Using above-mentioned
Elongation increment when stretching device measures sample fracture has three kinds of methods：1st, using the stretcher crossbeam being connected with stretching device
Shift value replaces, because the stretcher crosshead displacement precision that equipment control software is shown is difficult to ensure that, it is impossible to accurately reflect
Go out the practical distortion amount of O-shaped rubber ring, and need to be it is determined that the elongation of girth is exactly equal in O-shaped rubber ring using the method
Point is reset for crossbeam positional value, it is more difficult to operate when zero.In addition, fit clearance between equipment and fixture, fixture and exemplar and not
Same dependent variable, causes measuring result error further to increase.2nd, using the instrument progress extension at break having compared with high measurement accuracy
Measurement, but it is disadvantageous in that the fracture terminal of whole O-shaped rubber ring is artificially judged by experimenter, it is difficult to synchro measure is whole
O-shaped rubber ring is broken the extension at break amount of moment.
Utility model content
The utility model solves existing whole O-shaped rubber ring tensile test at room temperature extension at break amount and is difficult to accurately measure, and carries
For measurement accuracy height, whole O-shaped rubber ring tension test extension at break measuring device is planted easily to operate.
The purpose of this utility model is achieved through the following technical solutions：A kind of whole O-shaped rubber ring tension test fracture is stretched
Long measuring device, it includes upper fixture, lower clamp, vertically arranged skid beam, upper extensometer and lower extensometer, upper extensometer and
Lower extensometer is arranged in skid beam and can slid along, and upper fixture and lower clamp setting symmetrical above and below, upper extensometer is by load portion
Divide and test portion forms, described load part includes adapter, preload ring and U-shaped connecting rod, is provided with the middle part of adapter
External screw thread, internal thread is offered in preload ring, external screw thread of the preload ring through internal thread and adapter is connected and installed on adapter,
The upper end of U-shaped connecting rod and the bottom of adapter connect, and described test portion includes centering card, axle wheel, floral disc and bearing,
The inner ring of bearing is installed on the bottom of U-shaped connecting rod, and the outer ring of bearing is interference fitted with the endoporus of axle wheel, is opened on the cylinder of axle wheel
Provided with annular groove, external screw thread is additionally provided with the bottom of U-shaped connecting rod, the external screw thread of floral disc and U-shaped connecting rod is connected and installed in U
Shape connecting rod bottom, and the boss for compressing bearing outer ring is provided with the end face of floral disc, one end of described centering card is fixed
In U-shaped connecting rod bottom, the other end for card of feeling relieved offers V-type neck.
The upper end of described adapter offers horizontal pin hole.
The bottom of described adapter begins with orthogonal macropore and aperture.
The upper end of described U-shaped connecting rod is plugged in macropore, and the fixation through U-shaped small end portion is provided with aperture
Pin.
The utility model has advantages below：
(1) measurement accuracy is high.The utility model passes through spacing between the extensometer edge of a knife after being brought into close contact with upper and lower extensometer
When being pulled apart with whole O-shaped rubber ring, extensometer reading sum replaces crosshead displacement, avoids that crosshead displacement precision is low, equipment
Fit clearance and dependent variable between fixture, fixture and exemplar are not fixed, crosshead displacement resets the shortcomings of point is difficult to determine,
By experimental rig be formed with the bearing heart be caught on the V-type neck in test force vertical direction same level face the extensometer edge of a knife with
O-shaped rubber ring practical distortion amount is measured, improves measurement accuracy.
(2) it is simple in construction, easy to operate.Apparatus structure provided by the utility model is simple, using U-shaped connecting rod, connects in U-shaped
The bottom assembling bearing and axle wheel, axle wheel outer surface of bar are formed with annular groove.Only whole O-shaped rubber ring need to be placed on two during experiment
The installation of exemplar can be completed in individual annular groove, can finally start to test, there is the characteristics of frock is quick, easy to operate.
3rd, avoid and shifted in rubber ring drawing process.Annular groove, ring are offered on axle wheel of the present utility model
Connected in star effectively prevent lateral shift or the slip that O-shaped rubber ring may occur when being tested on axle wheel excircle, avoid
Thus the measurement error brought.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of upper fixture；
Fig. 3 is the rearview of upper fixture；
Fig. 4 is the structural representation of centering card；
In figure, 1- upper fixtures, 2- lower clamps, 3- skid beams, the upper extensometers of 4-, extensometer under 5-, 6- adapters, 7- pretensions
Ring, 8-U shape connecting rods, 9- centering cards, 10- axle wheels, 11- floral discs, 12- bearings, 13- annular grooves, 14-V type necks, 15- are horizontal
To pin hole, 16- apertures.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, the scope of protection of the utility model be not limited to
It is lower described：
As shown in figures 1-4, a kind of whole O-shaped rubber ring tension test extension at break measuring device, it include upper fixture 1,
Lower clamp 2, vertically arranged skid beam 3, upper extensometer 4 and lower extensometer 5, upper extensometer 4 and lower extensometer 5 are arranged at skid beam 3
Above and it can slide along, upper fixture 1 and 2 setting symmetrical above and below of lower clamp.Upper extensometer 4 is by load part and test portion group
Into described load part includes adapter 6, preload ring 7 and U-shaped connecting rod 8, and the middle part of adapter 6 is provided with external screw thread, pretension
Internal thread is offered in ring 7, external screw thread of the preload ring 7 through internal thread and adapter 6 is connected and installed on adapter 6, U-shaped connecting rod
8 upper end is connected with the bottom of adapter 6, and described test portion includes centering card 9, axle wheel 10, floral disc 11 and bearing
12, the inner ring of bearing 12 is installed on the bottom of U-shaped connecting rod 8, and the outer ring of bearing 12 is interference fitted with the endoporus of axle wheel 10, axle wheel
Annular groove 13 is offered on 10 cylinder, external screw thread, floral disc 11 and U-shaped connecting rod 8 are additionally provided with the bottom of U-shaped connecting rod 8
External screw thread be connected and installed in the bottom of U-shaped connecting rod 8, and the boss for compressing bearing 12 outer ring is provided with the end face of floral disc 11,
When rotation floral disc 11 makes boss be separated with the outer ring of bearing 12, axle wheel 10 can do free rotation around the axis of bearing 12, convenient
Adjustment is placed on the position of sample between two annular grooves 13, the precision of guarantee test.One end of described centering card 9 is fixed
In the bottom of U-shaped connecting rod 8, the other end of centering card 9 offers V-type neck 14, and centering card 9 is L-shaped flake.
The upper end of described adapter 6 offers horizontal pin hole 15；The bottom of described adapter 6 begins with phase
Mutually vertical macropore and aperture 16.The upper and lower end parts diameter of described U-shaped connecting rod 8 is equal and arranged in parallel, U-shaped connecting rod 8
Upper end be plugged in macropore, the steady pin through the upper end of U-shaped connecting rod 8 is installed in aperture 16.
It comprises the following steps：
S1, the adapter 6 of upper fixture 1 is fixedly connected with testing machine entablature；By the adapter 6 of lower clamp 2 through transverse direction
Pin hole 15 passes through horizontal pin connection with testing machine drawing mechanism；Rotating up preload ring 7 makes preload ring 7 be resisted against transverse bolt
On, with except the introduced fit clearance of horizontal pin connection；
S2, by upper and lower extensometer along skid beam 3 make up and down extensometer be brought into close contact；After extensometer is brought into close contact above and below measure
The extensometer edge of a knife between space D0；Measure the internal diameter of whole O-shaped rubber ring sample；
S3, experiment：Reset extensometer reading；In the annular groove 13 of the axle wheel 10 of upper fixture 1 and the axle wheel 10 of lower clamp 2
Annular groove 13 between put sample to be tested；The edge of a knife of upper extensometer 4 is caught in the V-type neck 14 of upper fixture 1, drawn by under
The edge of a knife for stretching meter 5 is caught in the V-type neck 14 of lower clamp 2；Testing machine pulls lower clamp 2 to move, and lower extensometer 5 follows lower clamp
2 and moved along skid beam 3, until tensile sample is pulled apart, read the reading D that sample pulls apart extensometer 5 at present；Drawn due to upper and lower
Stretch meter to be held on respectively on the centering card 9 of upper and lower fixture, and be not held on directly on sample, avoid sample holder
After deform, improve the measurement accuracy of extension at break amount；
S4, calculate whole O-shaped rubber ring tensile test at room temperature extension at break amount
In formula：ε is elongation at break, %；D is that sample pulls apart extensometer reading at present, unit mm；D0Extended to be upper and lower
Meter be brought into close contact after the extensometer edge of a knife between spacing, unit mm；G is axle wheel girth, unit mm；C is sample internal diameter girth, unit
mm.It can thus be appreciated that the present apparatus is pulled by spacing between the extensometer edge of a knife after being brought into close contact with upper and lower extensometer with whole O-shaped rubber ring
When disconnected, extensometer reading sum replaces crosshead displacement, avoids low crosshead displacement precision, equipment and fixture, fixture and sample
Fit clearance and dependent variable between part are not fixed, crosshead displacement resets the shortcomings of point is difficult to determine, by experimental rig
It is formed with and is caught in the extensometer edge of a knife on the V-type neck in test force vertical direction same level face to measure O shape rubber with the bearing heart
Practical distortion amount is enclosed, improves measurement accuracy.
It can easily be realized or using the utility model, and be understood completely in disclosed above by professional and technical personnel in the field
Rong Hou, many variations and modifications can be designed.Therefore the utility model is not intended to be limited to specific implementation disclosed herein
Example, and be to fit to the modifications and variations consistent with test method described in the utility model and its experimental rig function and
Its equivalent.
Claims (4)
- A kind of 1. whole O-shaped rubber ring tension test extension at break measuring device, it is characterised in that：It includes upper fixture（1）, under Fixture（2）, vertically arranged skid beam（3）, upper extensometer（4）With lower extensometer（5）, upper extensometer（4）With lower extensometer（5）If It is placed in skid beam（3）Above and it can slide along, upper fixture（1）With lower clamp（2）Setting symmetrical above and below, upper extensometer（4）By load Part and test portion composition, described load part includes adapter（6）, preload ring（7）With U-shaped connecting rod（8）, adapter （6）Middle part be provided with external screw thread, preload ring（7）Inside offer internal thread, preload ring（7）Through internal thread and adapter（6）'s External screw thread is connected and installed in adapter（6）On, U-shaped connecting rod（8）Upper end and adapter（6）Bottom connection, described examination Testing part includes centering card（9）, axle wheel（10）, floral disc（11）And bearing（12）, bearing（12）Inner ring be installed on U-shaped connecting rod （8）Bottom, bearing（12）Outer ring and axle wheel（10）Endoporus interference fit, axle wheel（10）Cylinder on offer annular Groove（13）, U-shaped connecting rod（8）Bottom on be additionally provided with external screw thread, floral disc（11）With U-shaped connecting rod（8）External screw thread connection It is installed on U-shaped connecting rod（8）Bottom, and floral disc（11）End face on be provided with compression bearing（12）The boss of outer ring, it is described Centering card（9）One end be fixedly arranged on U-shaped connecting rod（8）Bottom, card of feeling relieved（9）The other end offer V-type neck（14）.
- 2. a kind of whole O-shaped rubber ring tension test extension at break measuring device according to claim 1, its feature exist In：Described adapter（6）Upper end offer horizontal pin hole（15）.
- 3. a kind of whole O-shaped rubber ring tension test extension at break measuring device according to claim 1, its feature exist In：Described adapter（6）Bottom begin with orthogonal macropore and aperture（16）.
- 4. a kind of whole O-shaped rubber ring tension test extension at break measuring device according to claim 1, its feature exist In：Described U-shaped connecting rod（8）Upper end be plugged in macropore, aperture（16）Inside it is provided with through U-shaped connecting rod（8）Upper end Steady pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707696.0U CN207036559U (en) | 2017-06-16 | 2017-06-16 | A kind of whole O-shaped rubber ring tension test extension at break measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720707696.0U CN207036559U (en) | 2017-06-16 | 2017-06-16 | A kind of whole O-shaped rubber ring tension test extension at break measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036559U true CN207036559U (en) | 2018-02-23 |
Family
ID=61468348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720707696.0U Withdrawn - After Issue CN207036559U (en) | 2017-06-16 | 2017-06-16 | A kind of whole O-shaped rubber ring tension test extension at break measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036559U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084881A (en) * | 2017-06-16 | 2017-08-22 | 中国人民解放军第五七九工厂 | A kind of whole O-shaped rubber ring tension test extension at break measuring device and method |
| CN110389073A (en) * | 2019-08-30 | 2019-10-29 | 贵州航天精工制造有限公司 | It is a kind of for measuring the test tool of O-ring seal tensile property |
-
2017
- 2017-06-16 CN CN201720707696.0U patent/CN207036559U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084881A (en) * | 2017-06-16 | 2017-08-22 | 中国人民解放军第五七九工厂 | A kind of whole O-shaped rubber ring tension test extension at break measuring device and method |
| CN107084881B (en) * | 2017-06-16 | 2023-05-16 | 中国人民解放军第五七一九工厂 | Device and method for measuring elongation at break of whole O-shaped rubber ring in tensile test |
| CN110389073A (en) * | 2019-08-30 | 2019-10-29 | 贵州航天精工制造有限公司 | It is a kind of for measuring the test tool of O-ring seal tensile property |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180223 Effective date of abandoning: 20230516 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180223 Effective date of abandoning: 20230516 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |