CN102768153B - Creep testing machine - Google Patents
Creep testing machine Download PDFInfo
- Publication number
- CN102768153B CN102768153B CN201210236273.7A CN201210236273A CN102768153B CN 102768153 B CN102768153 B CN 102768153B CN 201210236273 A CN201210236273 A CN 201210236273A CN 102768153 B CN102768153 B CN 102768153B
- Authority
- CN
- China
- Prior art keywords
- vertical beam
- oil cylinder
- bearing pin
- center line
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of creep testing machine, comprises frame, load maintainer and test specimen installation component; Frame comprises the first vertical beam, the second vertical beam, first crossbeam and second cross beam; Load maintainer comprises lever arm, loads counterweight, counterweight hook, power transmission arm, the first oil cylinder and the second oil cylinder, the center line of the first oil cylinder and the center line of the second oil cylinder are parallel to each other, two oil cylinders are communicated with by body, be fixed on first crossbeam, the internal diameter of the first oil cylinder is less than the internal diameter of the second oil cylinder, in first oil cylinder, first piston is installed, the second piston is installed in the second oil cylinder; One end of lever arm is hinged with the first bearing pin being arranged on the first vertical beam top, counterweight hook is hinged with the 3rd bearing pin being arranged on lever arm end, loading counterweight is placed on counterweight hook, one end of power transmission arm is connected with first piston, and its other end and the second bearing pin be arranged on lever arm are hinged.<!--1-->
Description
Technical field
The invention belongs to testing equipment, particularly for the creep testing machine of test specimen croop property test.
Background technology
Croop property is the important mechanical property of one of component, and for rock, croop property is the key factor determining engineering surrounding rock long-time stability.The parameter of evaluation engineering rock mass long-time stability is obtained by the creep test under long-term loading, because rock strength is high, thus needing to apply large-tonnage xial feed to rock just can make rock under such loading the deformation of creep occur, how to guarantee to apply large-tonnage xial feed in long-term loading procedure, and make it keep stable and not change, be the key of creep of rock test.
Existing creep testing machine, comprises frame, load maintainer and test specimen installation component.The load maintainer applying xial feed during creep test has two kinds of versions, and one is control circui formula load maintainer, and one is hand manual control hydraulic loading mechanism.Control circui formula load maintainer Problems existing is: if in loading procedure power-off or rock deformation, can cause loading and to interrupt or load changes, and the fluctuation of institute's load application, and the stability that loads cannot be guaranteed; Although hand manual control hydraulic loading mechanism can apply large-tonnage load, and can ensure that in loading procedure, load can not interrupt, but the distortion of rock is continuous print, artificial loading procedure is but discontinuous, the load causing causing in process of rock deformation changes and cannot be adjusted in real time by this, make the xial feed in rock sample deformation process can not keep constant, affect the accuracy of measurement result.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of creep testing machine of improvement is provided, to solve stability to institute's load application in the long-term loading procedure of test specimen and continuity problem, and be convenient to the xial feed that applies according to the needs adjustment of test.
Creep testing machine of the present invention, comprises frame, load maintainer and test specimen installation component, frame comprises the first vertical beam, second vertical beam, first crossbeam and second cross beam, first vertical beam is higher than the second vertical beam, first vertical beam and the second vertical beam are parallel to each other and a spacing of being separated by is installed, first crossbeam is sill, between the first vertical beam and the second vertical beam, its bottom surface is concordant with the bottom surface of the second vertical beam, its two ends are connected with the first vertical beam bottom and the second vertical beam bottom respectively, second cross beam is entablature, between the first vertical beam and the second vertical beam, the either flush of its end face and the second vertical beam, its two ends are connected with the first vertical beam top and the second vertical beam top respectively, load maintainer comprises lever arm, loads counterweight, counterweight hook, power transmission arm, the first oil cylinder and the second oil cylinder, the center line of described first oil cylinder and the center line of the second oil cylinder are parallel to each other, two oil cylinders are communicated with by body, be fixed on the first crossbeam of composition frame by web joint, the internal diameter of the first oil cylinder is less than the internal diameter of the second oil cylinder, in first oil cylinder, first piston is installed, the second piston is installed in the second oil cylinder, one end of described lever arm is hinged with the first bearing pin being arranged on the first vertical beam top, and its other end is provided with the 3rd bearing pin installing counterweight hook, and described counterweight hook is hinged with the 3rd bearing pin, and described loading counterweight is placed on counterweight hook, one end of described power transmission arm is connected with first piston, and its other end and the second bearing pin be arranged on lever arm are hinged, test specimen installation component is made up of upper bearing plate and lower bearing plate, and described lower bearing plate is arranged on the upper of the second piston, and described upper bearing plate is arranged on second cross beam, and the center line of upper bearing plate and lower bearing plate all overlaps with the center line of the second piston.
For the ease of refueling or oil return in oil cylinder, creep testing machine of the present invention is also provided with for the hand oil pump to described oil cylinder oiling, and described hand oil pump is connected with the first oil cylinder or the second oil cylinder by pipe fitting.
In the load maintainer of creep testing machine of the present invention, the size of its second oil cylinder and the first oil cylinder was determined according to needing of loading of test specimen during test.For rock sample, preferably the first oil cylinder internal diameter: internal diameter=1:2 ~ 100 of the second oil cylinder.
In the load maintainer of creep testing machine of the present invention, first bearing pin, distance between the second bearing pin and the 3rd bearing pin determine the power arm of lever arm and the length of resistance arm, and the needs that should load according to test specimen during test and the integrally-built rationality of uniaxial static creep test machine be determined.Can select in following size: the distance L1: the first bearing pin center line between the first bearing pin center line and the second bearing pin center line and distance L2=1:3 ~ 30 between the 3rd bearing pin center line.
The using method of creep testing machine of the present invention and principle of work:
1, test specimen is placed on lower bearing plate, fluid is inputted oil cylinder, make test specimen end face contact upper bearing plate; According to test needs, counterweight hook places certain loading counterweight, lever arm is rotated around the first bearing pin realize exerting pressure to power transmission arm, pressure is passed to first piston by power transmission arm, the first in-oil cylinder fluid is acted on by first piston, make the pressure increase of fluid, pressure oil acts on the second piston, realizes the axial compression to test specimen; When rock sample deforms, the end face of the second piston rises, the end face of first piston declines, but because the loading weight of counterweight and the arm of force of lever arm do not change, thus the pressure that power transmission arm passes to first piston can not change, the power that pressure oil acts on the second piston can not change, thus makes the xial feed in rock sample deformation process remain constant.
2, utilize lever principle, counterweight hook places different loading counterweights, by lever arm, different pressure is formed to power transmission arm.
3, utilize hydraulic principle, suitable size is chosen to the internal diameter of the first oil cylinder and the second oil cylinder, little tonnage can be applied to the axially different load of large-tonnage to test specimen.
The present invention has following beneficial effect:
When 1, using the croop property of creep testing machine of the present invention to rock sample to test, large-tonnage xial feed can not only be applied to test specimen, and stability and the continuity of the xial feed applied in long time loading process can be guaranteed.
2, when rock sample deforms, because the loading weight of counterweight and the arm of force of lever arm do not change, thus the pressure that power transmission arm passes to first piston can not change, the power that pressure oil acts on the second piston can not change, thus makes the xial feed in rock sample deformation process remain constant.
When 3, using, by placing the xial feed that different loading counterweights and adjustable apply test specimen on counterweight hook, be thus convenient to the xial feed applied according to the needs adjustment of test.
4, by the control of the first oil cylinder and the second oil cylinder internal diameter size, little tonnage can be applied to the axially different load of large-tonnage to test specimen.
5, creep testing machine of the present invention not only simple to operate, measure convenient, and measurement result is more accurately and reliably.
Creep testing machine of the present invention is applicable to the croop property test of various test specimen, is specially adapted to the croop property test of rock sample and concrete sample.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of creep testing machine of the present invention;
Fig. 2 is the vertical view of Fig. 1.
In figure, 1-lever arm, 2-the first vertical beam, 3-the second vertical beam, 4-first crossbeam, 5-second cross beam, 6-upper bearing plate, 7-lower bearing plate, 8-test specimen, 9-power transmission arm, 10-first piston, 11-the first oil cylinder, 12-web joint, 13-the second oil cylinder, 14-stiffening plate, 15-pipe fitting, 16-stop valve, 17-hand oil pump, 18-counterweight is linked up with, 19-load counterweight, 20-the second piston, 21-the first bearing pin, 22-the second bearing pin, 23-the three bearing pin, distance between L1-the first bearing pin center line and the second bearing pin center line, distance between L2-the first bearing pin center line and the 3rd bearing pin center line.
Embodiment
Be described further by the structure of embodiment to creep testing machine of the present invention below in conjunction with accompanying drawing.
In the present embodiment, the structure of creep testing machine as shown in Figure 1 and Figure 2, is made up of frame, load maintainer, test specimen installation component and hand oil pump 17.
Frame comprises the first vertical beam 2, second vertical beam 3, first crossbeam 4 and second cross beam 5, first vertical beam 2 is higher than the second vertical beam 3, first vertical beam 2 and the second vertical beam 3 are parallel to each other and a spacing of being separated by is installed, first crossbeam 4 is sill, between the first vertical beam 2 and the second vertical beam 3, its bottom surface is concordant with the bottom surface of the second vertical beam 3, its two ends are connected with the first vertical beam 2 bottom and the second vertical beam 3 bottom respectively, second cross beam 5 is entablature, between the first vertical beam 2 and the second vertical beam 3, the either flush of its end face and the second vertical beam 3, its two ends are connected with the first vertical beam 2 top and the second vertical beam 3 top respectively.
Load maintainer comprises lever arm 1, loading counterweight 19, counterweight hook 18, power transmission arm 9, first oil cylinder 11 and the second oil cylinder 13; The center line of described first oil cylinder 11 and the center line of the second oil cylinder 13 are parallel to each other, two oil cylinders are communicated with by body, be fixed on the first crossbeam 4 of composition frame by web joint 12, the stability of the first oil cylinder 11 is strengthened by the stiffening plate 14 between the first oil cylinder 11 and the first vertical beam 2, the internal diameter of the first oil cylinder 11 is less than the internal diameter of the second oil cylinder 13, in first oil cylinder 11, first piston 10 is installed, the second piston 20 is installed in second oil cylinder 13; One end of described lever arm 1 is hinged with the first bearing pin 21 being arranged on the first vertical beam 2 top, and its other end is provided with the 3rd bearing pin 23 installing counterweight hook, and described counterweight hook 18 and the 3rd bearing pin 23 are hinged, and described loading counterweight 19 is placed on counterweight hook 18; One end of described power transmission arm 9 is connected with first piston 10, and its other end and the second bearing pin 22 be arranged on lever arm 1 are hinged.
Described test specimen installation component is made up of upper bearing plate 6 and lower bearing plate 7, lower bearing plate 7 is arranged on the end face of the second piston, described upper bearing plate 6 is arranged on the bottom surface of second cross beam 5, and the center line of upper bearing plate 6 and lower bearing plate 7 all overlaps with the center line of the second piston.
Described hand oil pump selects model to be the hand oil pump (production of Chengdu hydraulic servo company limited) of SYD-63-40, is connected, described pipe fitting 15 is provided with stop valve 16 by pipe fitting 15 with the second oil cylinder 13.
Creep testing machine in the present embodiment is tested for the croop property of rock sample, its first oil cylinder internal diameter: the internal diameter=1:40 of the second oil cylinder; The distance L1: the first bearing pin 21 center line between first bearing pin 21 center line and the second bearing pin 22 center line and the distance L2=1:15 between the 3rd bearing pin 23 center line.
Above-described embodiment is an optimal technical scheme of the present invention, the invention is not restricted to above-described embodiment, and its technical scheme is the scope that claims limit.
Claims (3)
1. a creep testing machine, comprises frame, load maintainer and test specimen installation component, it is characterized in that:
Frame comprises the first vertical beam (2), second vertical beam (3), first crossbeam (4) and second cross beam (5), first vertical beam (2) is higher than the second vertical beam (3), first vertical beam (2) and the second vertical beam (3) are parallel to each other and a spacing of being separated by is installed, first crossbeam (4) is sill, be positioned between the first vertical beam (2) and the second vertical beam (3), its bottom surface is concordant with the bottom surface of the second vertical beam (3), its two ends are connected with the first vertical beam (2) bottom and the second vertical beam (3) bottom respectively, second cross beam (5) is entablature, be positioned between the first vertical beam (2) and the second vertical beam (3), the either flush of its end face and the second vertical beam (3), its two ends are connected with the first vertical beam (2) top and the second vertical beam (3) top respectively,
Load maintainer comprises lever arm (1), loading counterweight (19), counterweight hook (18), power transmission arm (9), the first oil cylinder (11), the second oil cylinder (13) and hand oil pump (17); The center line of described first oil cylinder (11) and the center line of the second oil cylinder (13) are parallel to each other, two oil cylinders are communicated with by body, be fixed on the first crossbeam (4) of composition frame by web joint (12), the internal diameter of the first oil cylinder (11) is less than the internal diameter of the second oil cylinder (13), first piston (10) is installed in the first oil cylinder (11), the second piston (20) is installed in the second oil cylinder (13); One end of described lever arm (1) is hinged with the first bearing pin (21) being arranged on the first vertical beam (2) top, its other end is provided with the 3rd bearing pin (23) installing counterweight hook, described counterweight hook (18) is hinged with the 3rd bearing pin (23), and described loading counterweight (19) is placed in counterweight hook (18); One end of described power transmission arm (9) is connected with first piston (10), its other end and the second bearing pin (22) be arranged on lever arm (1) are hinged, and described hand oil pump is connected with the first oil cylinder (11) or the second oil cylinder (13) by pipe fitting (15);
Test specimen installation component is made up of upper bearing plate (6) and lower bearing plate (7), described lower bearing plate (7) is arranged on the second piston (20), described upper bearing plate (6) is arranged on second cross beam (5), and the center line of upper bearing plate (6) and lower bearing plate (7) all overlaps with the center line of the second piston.
2. creep testing machine according to claim 1, is characterized in that in described load maintainer, the first oil cylinder internal diameter: internal diameter=1:2 ~ 100 of the second oil cylinder.
3. creep testing machine according to claim 1 or 2, it is characterized in that in described load maintainer, the distance L1: the first bearing pin (21) center line between the first bearing pin (21) center line and the second bearing pin (22) center line and distance L2=1:3 ~ 30 between the 3rd bearing pin (23) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210236273.7A CN102768153B (en) | 2012-07-06 | 2012-07-06 | Creep testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210236273.7A CN102768153B (en) | 2012-07-06 | 2012-07-06 | Creep testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102768153A CN102768153A (en) | 2012-11-07 |
| CN102768153B true CN102768153B (en) | 2015-10-28 |
Family
ID=47095634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210236273.7A Expired - Fee Related CN102768153B (en) | 2012-07-06 | 2012-07-06 | Creep testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102768153B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709809A (en) * | 2018-01-12 | 2018-10-26 | 中铁二院工程集团有限责任公司 | A kind of simple rock weathering, creep integration experimental rig and test method |
| CN117288563B (en) * | 2023-09-27 | 2024-04-30 | 中国科学院武汉岩土力学研究所 | Ultralow frequency cyclic load creep test system and test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553162A (en) * | 2003-08-21 | 2004-12-08 | 株洲时代新材料科技股份有限公司 | Elastic element creep testing method and tester thereof |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN202676555U (en) * | 2012-07-06 | 2013-01-16 | 核工业北京地质研究院 | Creep testing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10170415A (en) * | 1996-12-05 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Creep test device |
-
2012
- 2012-07-06 CN CN201210236273.7A patent/CN102768153B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553162A (en) * | 2003-08-21 | 2004-12-08 | 株洲时代新材料科技股份有限公司 | Elastic element creep testing method and tester thereof |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN202676555U (en) * | 2012-07-06 | 2013-01-16 | 核工业北京地质研究院 | Creep testing machine |
Non-Patent Citations (1)
| Title |
|---|
| RRTS-II型岩石流变扰动效应试验仪;高延法 等;《岩石力学与工程学报》;20110228;第30卷(第2期);第238-243页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102768153A (en) | 2012-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102749250B (en) | Uniaxial-creep testing machine | |
| CN202599766U (en) | Multifunctional test machine for anchorage performance of deep surrounding rock | |
| KR20110085610A (en) | Greater oil pressure cylinder test system | |
| CN201340369Y (en) | Indoor test platform for roadbed soil mass resilience modulus | |
| CN103323340A (en) | Mechanical property test device and method of steel-concrete contact interface | |
| CN103575597A (en) | Axial compression column non-loading reinforcement test device | |
| CN203334187U (en) | Bracket pre-pressing structure | |
| CN202676555U (en) | Creep testing machine | |
| CN102768153B (en) | Creep testing machine | |
| CN102854073B (en) | Embankment deformation monitoring model experiment device based on displacement tracing technology, and method thereof | |
| CN102103065A (en) | Device for calibrating extraction instrument | |
| CN101813575B (en) | Bending resistance test device for valve | |
| CN109342194B (en) | Rock sample transverse deformation measuring device | |
| CN103017963A (en) | Device for measuring opening and closing forces of back door of automobile | |
| CN102156097A (en) | Steel-concrete interface shear stress transmission testing device | |
| CN202661335U (en) | Single-shaft creep testing machine | |
| CN201464204U (en) | Dynamic jack load pretesting system | |
| CN110672436B (en) | Compression-shear testing machine | |
| CN205049466U (en) | Device of survey concrete and steel bar anchoring bearing capacity | |
| CN206618551U (en) | A kind of high-precision bridge pad pressure testing machine | |
| CN218212441U (en) | Side limit annular direct shear apparatus for simulating shear strength of pile-mudstone contact surface | |
| CN205049465U (en) | Simple and easy survey concrete and device of steel bar anchoring bearing capacity | |
| CN216247570U (en) | Concrete faying face shear fatigue strength testing arrangement | |
| CN103423237B (en) | Hydraulic jack stroke test device | |
| CN202612270U (en) | Stroke test device of hydraulic oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 |