CN202661335U - Single-shaft creep testing machine - Google Patents
Single-shaft creep testing machine Download PDFInfo
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- CN202661335U CN202661335U CN201220327810.4U CN201220327810U CN202661335U CN 202661335 U CN202661335 U CN 202661335U CN 201220327810 U CN201220327810 U CN 201220327810U CN 202661335 U CN202661335 U CN 202661335U
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Abstract
A single-shaft creep testing machine comprises a frame, a loading mechanism and a test piece installing assembly. The frame comprises a first vertical beam, a second vertical beam, a first transverse beam and a second transverse beam, wherein the loading mechanism comprises a lever arm, a loading bob-weight, a bob-weight hanging hook, a force transmission arm, a first oil cylinder and a second oil cylinder, the first oil cylinder is formed by two cylinder bodies and a tube body for communicating the two cylinder bodies, diameters of the two cylinder bodies are equal, and centre lines of the two cylinder bodies are mutually parallel. The first oil cylinder is fixed on the first transverse beam, a first piston is installed on one cylinder body forming the first oil cylinder, the other cylinder body forming the first oil cylinder is communicated with the second oil cylinder, an inner diameter of the second oil cylinder is larger than that of the first oil cylinder, and a second piston is installed in the second oil cylinder. One end of the lever arm is hinged to a first pin shaft installed on the top portion of the first vertical beam, the bob-weight hanging hook is hinged to a third pin shaft installed on the end portion of the lever arm, the loading bob-weight is placed on the lever arm, one end of the force transmission arm is connected with the first piston, and the other end of the force transmission arm is connected with a second pin shaft installed on the lever arm.
Description
Technical field
The utility model belongs to testing equipment, the uniaxial static creep test machine of particularly testing for the test specimen croop property.
Background technology
Croop property is a kind of important mechanical property of member, and for rock, croop property is the key factor that determines the engineering surrounding rock long-time stability.The parameter of evaluation engineering rock mass long-time stability is to obtain by the creep test under long-term the loading, because rock strength is high, thereby need to apply the large-tonnage xial feed to rock and just can make rock under this load, the deformation of creep occur, how to guarantee to apply in the long-term loading procedure large-tonnage xial feed, and make it keep stablizing and not changing, be the key of creep of rock test.
Existing uniaxial static creep test 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 formula load maintainer, and a kind of is hand manual control hydraulic loading mechanism.The problem that circuit control formula load maintainer exists is: if 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 stability that loads; Although hand manual control hydraulic loading 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, artificial loading procedure but is discontinuous, 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, affect the accuracy of measurement result.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of improved uniaxial static creep test machine is provided, to solve stability and the continuity problem to institute's load application in the long-term loading procedure of test specimen, and be convenient to the xial feed that applies of needs adjustment according to test, realize that little tonnage is to the different xial feeds loadings of large-tonnage.
Uniaxial static creep test machine described in the utility model 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, the first vertical beam is higher than the second vertical beam, the first vertical beam and the second vertical beam are parallel to each other and the 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, its end face is concordant with the end face of the 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, the first oil cylinder and the second oil cylinder; Described the first oil cylinder is " U " shape structure, the cylinder body that is parallel to each other by two equal diameters, center lines and the body that two cylinder bodies are communicated with consist of, be fixed on the first crossbeam that forms frame by web joint, consist of in the cylinder body of the first oil cylinder first piston is installed, another cylinder body that consists of the first oil cylinder is connected with the second oil cylinder and communicates, the internal diameter of described the second oil cylinder is equipped with the second piston greater than the internal diameter of the first oil cylinder in the second oil cylinder; One end of described lever arm is hinged with the 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 described counterweight hook is hinged with the 3rd bearing pin, and described loading counterweight is placed on the counterweight hook; One end of described power transmission arm is connected with first piston, and its other end is hinged with the second bearing pin that is installed on the lever arm; The test specimen installation component is comprised of upper bearing plate and lower bearing plate, and described lower bearing plate is installed in the upper of the second piston, and described upper bearing plate is installed on the second cross beam, the center line of upper bearing plate and lower bearing plate all with the central lines of the second piston.
For the ease of refueling or oil return in oil cylinder, uniaxial static creep test machine described in the utility model also is 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.
Stability when working in order to strengthen the first oil cylinder and the second oil cylinder, also be provided with the 3rd crossbeam in the frame of uniaxial static creep test machine described in the utility model, described the 3rd crossbeam is middle cross beam, be provided with on it and the external diameter of the first oil cylinder and the second oil cylinder and two through holes (being used for suit the first oil cylinder and the second oil cylinder) of installation site coupling, the 3rd crossbeam is between first crossbeam and second cross beam, and its two ends are connected with the first vertical beam and the second vertical beam respectively.
In the load maintainer of uniaxial static creep test machine described in the utility model, the size of its second oil cylinder and the first oil cylinder according to when test the needs that load of test specimen determine.For rock sample, preferred the first oil cylinder internal diameter: the internal diameter=1:2 of the second oil cylinder ~ 100.
In the load maintainer of uniaxial static creep test machine described in the utility model, distance between the first bearing pin, the second bearing pin and the 3rd bearing pin determines the power arm of lever arm and the length of resistance arm, and test specimen loads in the time of should be according to test needs and the integrally-built rationality of uniaxial static creep test machine are determined.Can in following size, select: the distance L 2=1:3 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 ~ 30.
The using method of uniaxial static creep test machine described in the utility model and principle of work:
1, test specimen is placed on the lower bearing plate, fluid is inputted oil cylinder, make the upper bearing plate of test specimen end face contact; According to the test needs, place certain loading counterweight at the counterweight hook, lever arm is rotated around the first bearing pin to be realized 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 by first piston, the pressure of fluid is increased, and 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 descends, but because the weight of loading counterweight and the arm of force of lever arm do not change, thereby the pressure that the power transmission arm passes to first piston can not change, the power that pressure oil acts on the second piston can not change, thereby makes the xial feed in the rock sample deformation process remain constant.
2, utilize lever principle, place different loading counterweights at the counterweight hook, can form different pressure to the power transmission arm by lever arm.
3, utilize hydraulic principle, the internal diameter of the first oil cylinder and the second oil cylinder is chosen suitable size, can apply little tonnage to the different xial feeds of large-tonnage to test specimen.
The utlity model has following beneficial effect:
When 1, using uniaxial static creep test machine described in the utility model that the croop property of rock sample is tested, can not only apply the large-tonnage xial feed to test specimen, and can guarantee stability and the continuity of the xial feed that applies 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 the second piston can not change, thereby makes the xial feed in the rock sample deformation process remain constant.
When 3, using, be the xial feed that capable of regulating applies test specimen by placing different loading counterweights at the counterweight hook, thereby be convenient to the xial feed that the needs adjustment according to test applies.
4, by the control of the 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, uniaxial static creep test machine described in the utility model not only simple to operate, measure conveniently, and measurement result is more accurately and reliably.
Uniaxial static creep test machine described in the utility model 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 uniaxial static creep test machine described in the utility model;
Fig. 2 is the vertical view of Fig. 1.
Among the figure, 1-lever arm, the 2-the first vertical beam, the 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, the 11-the first oil cylinder, 12-web joint, the 13-the second oil cylinder, the 14-the three crossbeam, 15-pipe fitting, 16-stop valve, 17-hand oil pump, 18-counterweight hook, 19-loading counterweight, the 20-the second piston, the 21-the first bearing pin, the 22-the second bearing pin, the 23-the three bearing pin, distance between L1-first bearing pin center line and the second bearing pin center line, distance between L2-first bearing pin center line and the 3rd bearing pin center line.
Embodiment
The structure of uniaxial static creep test machine described in the utility model is described further by embodiment below in conjunction with accompanying drawing.
In the present embodiment, the structure of uniaxial static creep test machine is comprised of frame, load maintainer, test specimen installation component and hand oil pump 17 as shown in Figure 1 and Figure 2.
Described frame is comprised of the first vertical beam 2, the second vertical beam 3, first crossbeam 4, second cross beam 5 and the 3rd crossbeam 14; The first vertical beam 2 is higher than the second vertical beam 3, the first vertical beams 2 and the second vertical beam 3 is parallel to each other and the spacing of being separated by is installed; First crossbeam 4 is sill, and 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, and its two ends are connected with the first vertical beam 2 bottoms and the second vertical beam 3 bottoms respectively; Second cross beam 5 is entablature, and between the first vertical beam 2 and the second vertical beam 3, its end face is concordant with the end face of the second vertical beam 3, and its two ends are connected with the first vertical beam 2 tops and the second vertical beam 3 tops respectively; The 3rd crossbeam 14 is middle cross beam, be provided with on it and the external diameter of the first oil cylinder 11 and the second oil cylinder 13 and two through holes of installation site coupling, the 3rd crossbeam 14 is between first crossbeam 4 and second cross beam 5, and its two ends are connected with the first vertical beam 2 and the second vertical beam 3 respectively.
Described load maintainer comprises lever arm 1, loading counterweight 19, counterweight hook 18, power transmission arm 9, the first oil cylinder 11 and the second oil cylinder 13; Described the first oil cylinder 11 is " U " shape structure, the cylinder body that is parallel to each other by two equal diameters, center lines and the body that two cylinder bodies are communicated with consist of, consist of in the cylinder body of the first oil cylinder 11 first piston 10 is installed, another cylinder body that consists of the first oil cylinder 11 is connected with the second oil cylinder 13 and communicates, the internal diameter of described the second oil cylinder 13 is equipped with the second piston 20 greater than the internal diameter of the first oil cylinder in the second oil cylinder 13; One end of described lever arm 1 is hinged with the first bearing pin 21 that is installed in the first vertical beam 2 tops, and its other end is provided with the 3rd bearing pin 23 that the counterweight hook is installed; Described counterweight hook the 18 and the 3rd bearing pin 23 is hinged, and described loading counterweight 19 is placed on the counterweight hook 18; One end of described power transmission arm 9 is connected with first piston 10, and its other end is hinged with the second bearing pin 22 that is installed on the lever arm 1; The first oil cylinder 11 is fixed on the first crossbeam 4 that forms frame by web joint 12, the cylinder body of first piston 10 and the second oil cylinder is installed in the first oil cylinder is set in the set respective through hole of the 3rd crossbeam 14.
Described test specimen installation component is comprised of upper bearing plate 6 and lower bearing plate 7, lower bearing plate 7 is installed in the end face of the second piston, described upper bearing plate 6 is installed in the bottom surface of second cross beam 5, the center line of upper bearing plate 6 and lower bearing plate 7 all with the central lines of the second piston.
It is the hand oil pump (production of Chengdu hydraulic servo company limited) of SYD-63-40 that described hand oil pump is selected model, is connected with the first oil cylinder 11 by pipe fitting 15, on the described pipe fitting 15 stop valve 16 is installed.
Uniaxial static creep test machine in the present embodiment is used for the croop property test of rock sample, its first oil cylinder internal diameter: the internal diameter=1:60 of the second oil cylinder; Distance L 2=1:10 between 1: the first bearing pin 21 center line of distance L between the first bearing pin 21 center lines and the second bearing pin 22 center lines and the 3rd bearing pin 23 center lines.
Above-described embodiment is an optimal technical scheme of the present utility model, and the utility model is not limited to above-described embodiment, and its technical scheme is claims restricted portion.
Claims (9)
1. a uniaxial static creep test machine comprises frame, load maintainer and test specimen installation component, it is characterized in that:
Frame comprises the first vertical beam (2), the second vertical beam (3), first crossbeam (4) and second cross beam (5), the first vertical beam (2) is higher than the second vertical beam (3), the first vertical beam (2) is parallel to each other with the second vertical beam (3) and the 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), its end face is concordant with the end face of the second vertical beam (3), and 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) and the second oil cylinder (13); Described the first oil cylinder (11) is " U " shape structure, the cylinder body that is parallel to each other by two equal diameters, center lines and the body that two cylinder bodies are communicated with consist of, be fixed on the first crossbeam (4) that forms frame by web joint (12), consist of in the cylinder body of the first oil cylinder (11) first piston (10) is installed, another cylinder body that consists of the first oil cylinder (11) is connected with the second oil cylinder (13) and communicates, the internal diameter of described the second oil cylinder (13) is equipped with the second piston (20) greater than the internal diameter of the first oil cylinder in the second oil cylinder (13); One end of described lever arm (1) is hinged with the first bearing pin (21) that is installed in the first vertical beam (2) top, its other end is provided with the 3rd bearing pin (23) that the counterweight hook is installed, described counterweight hook (18) is hinged with the 3rd bearing pin (23), and described loading counterweight (19) is placed on the counterweight hook (18); One end of described power transmission arm (9) is connected with first piston (10), and its other end is hinged with the second bearing pin (22) that is installed on the lever arm (1);
The test specimen installation component is comprised of upper bearing plate (6) and lower bearing plate (7), described lower bearing plate (7) is installed on the second piston, described upper bearing plate (6) is installed on the second cross beam (5), the center line of upper bearing plate (6) and lower bearing plate (7) all with the central lines of the second piston.
2. described uniaxial static creep test machine according to claim 1 characterized by further comprising for the hand oil pump (17) to described oil cylinder oiling, and described hand oil pump is connected with the first oil cylinder (11) or the second oil cylinder (13) by pipe fitting (15).
3. described uniaxial static creep test machine according to claim 1 and 2, characterized by further comprising the 3rd crossbeam (14), described the 3rd crossbeam is middle cross beam, be provided with on it and the external diameter of the first oil cylinder (11) and the second oil cylinder (13) and two through holes of installation site coupling, the 3rd crossbeam (14) is positioned between first crossbeam (4) and the second cross beam (5), and its two ends are connected with the first vertical beam (2) and the second vertical beam (3) respectively.
4. described uniaxial static creep test machine according to claim 1 and 2 is characterized in that in the described load maintainer the first oil cylinder internal diameter: the internal diameter=1:2 of the second oil cylinder ~ 100.
5. described uniaxial static creep test machine according to claim 3 is characterized in that in the described load maintainer the first oil cylinder internal diameter: the internal diameter=1:2 of the second oil cylinder ~ 100.
6. described uniaxial static creep test machine according to claim 1 and 2, it is characterized in that in the described load maintainer distance L 2=1:3 between 1: the first bearing pin (21) center line of the distance L between the first bearing pin (21) center line and the second bearing pin (22) center line and the 3rd bearing pin (23) center line ~ 30.
7. described uniaxial static creep test machine according to claim 3, it is characterized in that in the described load maintainer distance L 2=1:3 between 1: the first bearing pin (21) center line of the distance L between the first bearing pin (21) center line and the second bearing pin (22) center line and the 3rd bearing pin (23) center line ~ 30.
8. described uniaxial static creep test machine according to claim 4, it is characterized in that in the described load maintainer distance L 2=1:3 between 1: the first bearing pin (21) center line of the distance L between the first bearing pin (21) center line and the second bearing pin (22) center line and the 3rd bearing pin (23) center line ~ 30.
9. described uniaxial static creep test machine according to claim 5, it is characterized in that in the described load maintainer distance L 2=1:3 between 1: the first bearing pin (21) center line of the distance L between the first bearing pin (21) center line and the second bearing pin (22) center line and the 3rd bearing pin (23) center line ~ 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220327810.4U CN202661335U (en) | 2012-07-06 | 2012-07-06 | Single-shaft creep testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220327810.4U CN202661335U (en) | 2012-07-06 | 2012-07-06 | Single-shaft creep testing machine |
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| Publication Number | Publication Date |
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| CN202661335U true CN202661335U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220327810.4U Withdrawn - After Issue CN202661335U (en) | 2012-07-06 | 2012-07-06 | Single-shaft creep testing machine |
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Cited By (1)
| 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 |
-
2012
- 2012-07-06 CN CN201220327810.4U patent/CN202661335U/en not_active Withdrawn - After Issue
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140319 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20140319 |