CN102768153A - Creep testing machine - Google Patents
Creep testing machine Download PDFInfo
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- CN102768153A CN102768153A CN2012102362737A CN201210236273A CN102768153A CN 102768153 A CN102768153 A CN 102768153A CN 2012102362737 A CN2012102362737 A CN 2012102362737A CN 201210236273 A CN201210236273 A CN 201210236273A CN 102768153 A CN102768153 A CN 102768153A
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Abstract
The invention relates to a creep testing machine, which comprises a machine frame, a loading mechanism and a test piece installing assembly, wherein the machine frame comprises a first vertical beam, a second vertical beam, a first transverse beam and a second transverse beam, the loading mechanism comprises a lever arm, a loading balance weight, a balance weight hook, a force transfer arm, a first oil cylinder and a second oil cylinder, a center line of the first oil cylinder and a center line of the second oil cylinder are mutually parallel, the two oil cylinder are communicated through a pipe body and are fixedly arranged on the first transverse beam, the inner diameter of the first oil cylinder is smaller than the inner diameter of the second oil cylinder, a first piston is arranged in the first oil cylinder, a second piston is arranged in the second oil cylinder, one end of a lever arm is hinged with a first pin shaft arranged at the top of the first vertical beam, the balance weight hook is hinged with a third pin shaft arranged at the end part of the lever arm, the loading balance weight is placed on the balance weight hook, one end of the force transfer arm is connected with the first piston, and the other end of the force transfer arm is hinged with a second pin shaft arranged on the lever arm.
Description
Technical field
The invention belongs to testing equipment, particularly be used for the creep testing machine of test specimen croop property test.
Background technology
Croop property is a kind of important mechanical property of member, and for rock, croop property is the key factor of decision engineering surrounding rock long-time stability.The parameter of evaluation engineering rock mass long-time stability is to obtain through the creep test under long-term the loading; Because rock strength is high; Thereby need to apply the large-tonnage xial feed and just can make rock that the deformation of creep takes place under this load rock; How guaranteeing to apply the large-tonnage xial feed in the long-term loading procedure, and make it keep stablizing and not changing, is the key of creep of rock test.
Existing creep testing machine comprises frame, load maintainer and test specimen installation component.The load maintainer that applies xial feed during creep test has two kinds of versions, and a kind of is circuit control type load maintainer, and a kind of is hand manual control hydraulic loaded mechanism.If the problem that circuit control type load maintainer exists is: in loading procedure, outage or rock deformation, can cause loading and interrupt or load changes, and the fluctuation of institute's load application, and can't guarantee the continuity and the stability that load; Though hand manual control hydraulic loaded mechanism can apply the large-tonnage load; And can guarantee that load can not interrupt in the loading procedure; But the distortion of rock is continuous, and artificial loading procedure but is discontinuous, and this load that will cause causing in the process of rock deformation changes and can't be adjusted in real time; Make the xial feed in the rock sample deformation process can not keep constant, influence the accuracy of measurement result.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of improved creep testing machine is provided, solving stability and continuity problem, and be convenient to the xial feed that the needs adjustment according to test is applied institute's load application in the long-term loading procedure of test specimen.
Creep testing machine according to the invention comprises frame, load maintainer and test specimen installation component; Frame comprises first vertical beam, second vertical beam, first crossbeam and second crossbeam, and first vertical beam is higher than second vertical beam, and first vertical beam and second vertical beam are parallel to each other and the spacing of being separated by is installed; First crossbeam is a sill; Between first vertical beam and second vertical beam, its bottom surface is concordant with the bottom surface of second vertical beam, and its two ends are connected with the first vertical beam bottom and the second vertical beam bottom respectively; Second crossbeam is an entablature; Between first vertical beam and second vertical beam, its end face is concordant with the end face of second vertical beam, and 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, first oil cylinder and second oil cylinder; The center line of the center line of said first oil cylinder and second oil cylinder is parallel to each other; Two oil cylinders are communicated with by body; Be fixed on first crossbeam of forming frame through web joint; The internal diameter of first oil cylinder is equipped with first piston less than the internal diameter of second oil cylinder in first oil cylinder, and second piston is installed in second oil cylinder; One end of said lever arm is hinged with first bearing pin that is installed in the first vertical beam top, and its other end is provided with the 3rd bearing pin that the counterweight hook is installed, and said counterweight hook is hinged with the 3rd bearing pin, and said loading counterweight is placed on the counterweight hook; One end of said power transmission arm is connected with first piston, and its other end is hinged with second bearing pin that is installed on the lever arm; The test specimen installation component is made up of last bearing plate and following bearing plate, said bearing plate down be installed in second piston on, said on bearing plate be installed on second crossbeam, the center line of last bearing plate and following bearing plate all with the central lines of second piston.
For the ease of in oil cylinder, refueling or oil return, creep testing machine according to the invention also is provided with the hand oil pump that is used for to said oil cylinder oiling, and said hand oil pump is connected with first oil cylinder or second oil cylinder through pipe fitting.
In the load maintainer of creep testing machine according to the invention, the size of its second oil cylinder and first oil cylinder according to when test the needs that load of test specimen confirm.For rock sample, the preferred first oil cylinder internal diameter: the internal diameter=1:2 of second oil cylinder ~ 100.
In the load maintainer of creep testing machine according to the invention; The power arm of the distance decision lever arm between first bearing pin, second bearing pin and the 3rd bearing pin and the length of resistance arm, the needs that test specimen loads in the time of should be according to test are definite with the integrally-built rationality of uniaxial static creep test machine.Can in following size, select: distance L 2=1:3 ~ 30 between 1: the first bearing pin center line of the distance L between the first bearing pin center line and the second bearing pin center line and the 3rd bearing pin center line.
The method of application of creep testing machine according to the invention and principle of work:
1, test specimen is placed on down on the bearing plate, fluid is imported oil cylinder, make the contact of test specimen end face go up bearing plate; According to the test needs; On the counterweight hook, place certain loading counterweight, lever arm is rotated around first bearing pin realize the power transmission arm is exerted pressure, the power transmission arm passes to first piston with pressure; Act on the first in-oil cylinder fluid through first piston; The pressure of fluid is increased, and pressure oil acts on second piston, realizes the axial compression to test specimen; When rock sample deforms; The end face of second piston rises; The end face of first piston descends, but owing to load the weight of counterweight and the arm of force of lever arm does not change, thereby the pressure that the power transmission arm passes to first piston can not change; The power that pressure oil acts on second piston can not change, thereby makes the xial feed in the rock sample deformation process remain constant.
2, utilize lever principle, on the counterweight hook, place different loading counterweights, can form different pressure to the power transmission arm through lever arm.
3, utilize hydraulic principle, the internal diameter of first oil cylinder and second oil cylinder is chosen suitable dimensions, can apply little tonnage to the different xial feeds of large-tonnage test specimen.
The present invention has following beneficial effect:
When 1, using creep testing machine according to the invention that the croop property of rock sample is tested, can not only apply the large-tonnage xial feed to test specimen, and the stability and the continuity of the xial feed that can guarantee to be applied in the long time loading process.
2, when rock sample deforms; Because loading the weight of counterweight and the arm of force of lever arm does not change; Thereby the pressure that the power transmission arm passes to first piston can not change; The power that pressure oil acts on second piston can not change, thereby makes the xial feed in the rock sample deformation process remain constant.
When 3, using, can adjust the xial feed that test specimen is applied, thereby be convenient to the xial feed that the needs adjustment according to test is applied through on the counterweight hook, placing different loading counterweights.
4, through the control of first oil cylinder and the second oil cylinder internal diameter size, can apply little tonnage to the different xial feeds of large-tonnage to test specimen.
5, creep testing machine according to the invention is not only simple to operate, measurement is convenient, and measurement result more accurately and reliably.
Creep testing machine according to the invention is applicable to the croop property test of various test specimens, is specially adapted to the croop property test of rock sample and concrete sample.
Description of drawings
Fig. 1 is a kind of structural representation of creep testing machine according to the invention;
Fig. 2 is the vertical view of Fig. 1.
Among the figure, the distance between distance, L2-first bearing pin center line and the 3rd bearing pin center line between 1-lever arm, 2-the first vertical beam, 3-the second vertical beam, 4-the first crossbeam, 5-the second crossbeam, 6-last bearing plate, 7-following 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 hook, 19-loading counterweight, 20-the second piston, 21-the first bearing pin, 22-the second bearing pin, 23-the three bearing pin, L1-first bearing pin center line and the second bearing pin center line.
Embodiment
The structure of creep testing machine according to the invention is described further through embodiment below in conjunction with accompanying drawing.
In the present embodiment, the structure of creep testing machine such as Fig. 1, shown in Figure 2 are made up of frame, load maintainer, test specimen installation component and hand oil pump 17.
Frame comprises first vertical beam 2, second vertical beam 3, first crossbeam 4 and second crossbeam, 5, the first vertical beams 2 are higher than second vertical beam, 3, the first vertical beams 2 and second vertical beam 3 is parallel to each other and the spacing of being separated by is installed; First crossbeam 4 is a sill; Between first vertical beam 2 and second vertical beam 3, its bottom surface is concordant with the bottom surface of second vertical beam 3, and its two ends are connected with first vertical beam, 2 bottoms and second vertical beam, 3 bottoms respectively; Second crossbeam 5 is an entablature; Between first vertical beam 2 and second vertical beam 3, its end face is concordant with the end face of second vertical beam 3, and its two ends are connected with first vertical beam, 2 tops and second vertical beam, 3 tops respectively.
Load maintainer comprises lever arm 1, loading counterweight 19, counterweight hook 18, power transmission arm 9, first oil cylinder 11 and second oil cylinder 13; The center line of the center line of said first oil cylinder 11 and second oil cylinder 13 is parallel to each other; Two oil cylinders are communicated with by body; Be fixed on first crossbeam 4 of forming frame through web joint 12, through the stability of 14 enhancings of the stiffening plate between first oil cylinder 11 and first vertical beam 2, first oil cylinder 11, the internal diameter of first oil cylinder 11 is less than the internal diameter of second oil cylinder 13; Be equipped with in first oil cylinder 11 in first piston 10, the second oil cylinders 13 second piston 20 is installed; One end of said lever arm 1 is hinged with first bearing pin 21 that is installed in first vertical beam, 2 tops, and its other end is provided with the 3rd bearing pin 23 that the counterweight hook is installed, and said counterweight hook the 18 and the 3rd bearing pin 23 is hinged, and said loading counterweight 19 is placed on the counterweight hook 18; One end of said power transmission arm 9 is connected with first piston 10, and its other end is hinged with second bearing pin 22 that is installed on the lever arm 1.
Said test specimen installation component is made up of with following bearing plate 7 last bearing plate 6; Following bearing plate 7 is installed in the end face of second piston; Saidly go up the bottom surface that bearing plate 6 is installed in second crossbeam 5, the center line of last bearing plate 6 and following bearing plate 7 all with the central lines of second piston.
It is the hand oil pump (production of Chengdu hydraulic servo company limited) of SYD-63-40 that said hand oil pump is selected model for use, is connected with second oil cylinder 13 through pipe fitting 15, on the said pipe fitting 15 stop valve 16 is installed.
Creep testing machine in the present embodiment is used for the croop property test of rock sample, its first oil cylinder internal diameter: the internal diameter=1:40 of second oil cylinder; Distance L 2=1:15 between 1: the first bearing pin 21 center line of distance L between first bearing pin, 21 center lines and second bearing pin, 22 center lines and the 3rd bearing pin 23 center lines.
The foregoing description is an optimal technical scheme of the present invention, the invention is not restricted to the foregoing description, and its technical scheme is claims restricted portion.
Claims (5)
1. a creep testing machine comprises frame, load maintainer and test specimen installation component, it is characterized in that:
Frame comprises first vertical beam (2), second vertical beam (3), first crossbeam (4) and second crossbeam (5); First vertical beam (2) is higher than second vertical beam (3); First vertical beam (2) is parallel to each other with second vertical beam (3) and the spacing of being separated by is installed, and first crossbeam (4) is a sill, is positioned between first vertical beam (2) and second vertical beam (3); Its bottom surface is concordant with the bottom surface of second vertical beam (3); Its two ends are connected with first vertical beam (2) bottom and second vertical beam (3) bottom respectively, and second crossbeam (5) is an entablature, are positioned between first vertical beam (2) and second vertical beam (3); Its end face is concordant with the end face of second vertical beam (3), and its two ends are connected with first vertical beam (2) top and 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 second oil cylinder (13); The center line of the center line of said first oil cylinder (11) and second oil cylinder (13) is parallel to each other; Two oil cylinders are communicated with by body; Be fixed on first crossbeam (4) of forming frame through web joint (12); The internal diameter of first oil cylinder (11) is equipped with first piston (10) less than the internal diameter of second oil cylinder (13) in first oil cylinder (11), second piston (20) is installed in second oil cylinder (13); One end of said lever arm (1) is hinged with first bearing pin (21) that is installed in first vertical beam (2) top; Its other end is provided with the 3rd bearing pin (23) that the counterweight hook is installed; Said counterweight hook (18) is hinged with the 3rd bearing pin (23), and said loading counterweight (19) is placed on the counterweight hook (18); One end of said power transmission arm (9) is connected with first piston (10), and its other end is hinged with second bearing pin (22) that is installed on the lever arm (1);
The test specimen installation component is made up of last bearing plate (6) and following bearing plate (7); Said bearing plate (7) down is installed on second piston (20); The said bearing plate (6) of going up is installed on second crossbeam (5), the center line of last bearing plate (6) and following bearing plate (7) all with the central lines of second piston.
2. according to the said creep testing machine of claim 1, it is characterized in that also comprising the hand oil pump (17) that is used for to said oil cylinder oiling, said hand oil pump is connected with first oil cylinder (11) or second oil cylinder (13) through pipe fitting (15).
3. according to claim 1 or 2 said creep testing machines, it is characterized in that in the said load maintainer the first oil cylinder internal diameter: the internal diameter=1:2 of second oil cylinder ~ 100.
4. according to claim 1 or 2 said creep testing machines; It is characterized in that in the said load maintainer distance L 2=1:3 ~ 30 between 1: the first bearing pin (21) center line of the distance L between first bearing pin (21) center line and second bearing pin (22) center line and the 3rd bearing pin (23) center line.
5. according to the said creep testing machine of claim 3; It is characterized in that in the said load maintainer distance L 2=1:3 ~ 30 between 1: the first bearing pin (21) center line of the distance L between first bearing pin (21) center line and second bearing pin (22) center line and 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 true CN102768153A (en) | 2012-11-07 |
| CN102768153B CN102768153B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210236273.7A Expired - Fee Related CN102768153B (en) | 2012-07-06 | 2012-07-06 | Creep testing machine |
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Cited By (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 |
| CN117288563A (en) * | 2023-09-27 | 2023-12-26 | 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 (4)
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| JPH10170415A (en) * | 1996-12-05 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Creep test device |
| 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 |
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2012
- 2012-07-06 CN CN201210236273.7A patent/CN102768153B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10170415A (en) * | 1996-12-05 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Creep test device |
| 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 |
|---|
| 高延法 等: "RRTS-II型岩石流变扰动效应试验仪", 《岩石力学与工程学报》 * |
Cited By (3)
| 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 |
| CN117288563A (en) * | 2023-09-27 | 2023-12-26 | 中国科学院武汉岩土力学研究所 | Ultralow frequency cyclic load creep test system 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 |
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| CN102768153B (en) | 2015-10-28 |
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Granted publication date: 20151028 |