CN203732376U - Variable dimension true triaxial test system - Google Patents
Variable dimension true triaxial test system Download PDFInfo
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- CN203732376U CN203732376U CN201420111117.2U CN201420111117U CN203732376U CN 203732376 U CN203732376 U CN 203732376U CN 201420111117 U CN201420111117 U CN 201420111117U CN 203732376 U CN203732376 U CN 203732376U
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a variable dimension true triaxial test system which comprises a first loading frame and a second loading frame, wherein the first loading frame comprises an upper end face for Z-direction loading, a lower end face opposite to the upper end face and for placing a test piece, a right end face for X-direction loading, a left end face opposite to the right end face, and a rear end face for Y-direction loading; loading devices for loading the test piece are fixed on the upper end face, the right end face and/or the left end face and the rear end face; mounting stripsare arranged on the first loading frame on the outer side of the front end surface of the first loading frame opposite to the rear end face; sliding grooves matched with the mounting strips in shape and size are formed in the second loading frame; and a push-pull mechanism sliding along the mounting strips and used for pushing the second loading frame is fixedly arranged on one side of the first loading frame on the outer side of the front end surface.The system solves limitation of the existing true triaxial test machine on the size of a sample.
Description
Technical field
The utility model relates to test unit field, particularly a kind of change size true triaxial test system.
Background technology
Current existing true triaxial test machine can only carry out small size test, and specimen size is generally 100mm left and right, and a part of large scale true triaxial test machine can only carry out big-size model test in addition, and specimen size is generally 1000mm left and right.If both needed, carry out stock size laboratory test, needed again to carry out big-size model test, needed to purchase two cover testing equipments, on space and funds, all formed very large waste.In addition,, when current existing big-size model test machine loads, just the whole increased pressure board of one side directly loads conventionally, is unfavorable for being uniformly distributed of stress, more cannot realize the requirement of multiple different loading paths on single loading surface.
CN202599762 discloses the large thing mould of a kind of true three axle stress loading device, is provided with nine lifting jack on the octagon support frame of its load maintainer, does not relate to the conversion of exerting oneself of each lifting jack, can not carry out small size test.
Summary of the invention
Technical problem to be solved in the utility model is, not enough for prior art, provide a kind of and both can carry out small size test, can carry out again the change size true triaxial test system of big-size model test, solve the limitation of existing true triaxial test machine in specimen size.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of change size true triaxial test system, comprise the first loading frame, the second loading frame, described the first loading frame comprises the upper surface that loads for Z-direction, relative with position, described upper surface for placing the lower surface of test specimen, the right side loading for X-direction, the left side relative with position, described right side, for the rear end face of Y-direction loading; On described upper surface, right side and/or left side, rear end face, be all fixed with the charger for described test specimen is loaded; The first loading frame front end face opening of described rear end face relative position; First loading frame in described front end face outside is provided with mounting bar; On described the second loading frame, offer the chute mating with described mounting bar shape size; Described front end face outside the first loading frame one side is fixed with the push-pull mechanism sliding along described mounting bar for promoting described the second loading frame.
Also comprise for test specimen is transported to the conveying mechanism of lower surface through described front end face opening; Described conveying mechanism comprises two guide rails that be arranged in parallel and is arranged on two guide rails and the dolly that can slide on described two guide rails; Same one end lower surface of described two guide rails is all fixed with support bar, and described support bar height and described the first loading frame lower surface matched.Conveying mechanism not only can transport test specimen, can also transport needed other object in loading procedure, as pad etc.
On described lower surface, be fixed with jacking cylinder, described dolly is placed the position of test specimen and is offered away from the position of described support bar one side the groove mating with the piston rod size of described jacking cylinder.When test specimen is transported to lower surface, the piston rod of jacking cylinder, by test specimen jack-up, manually pulls dolly, by the groove on dolly, dolly is exited easily.
Described charger comprises that axle moves device base, moving device base one side of described axle is fixed with the moving device of axle, the moving device base opposite side of described axle is fixed with a plurality of load cylinders, and described a plurality of load cylinder is arranged into oil cylinder array, the piston rod of each load cylinder of described oil cylinder array periphery is all fixedly connected with a little platen, the piston rod of all load cylinders of described oil cylinder array inner ring is fixedly connected with the large platen of same, and described large platen contacts increased pressure board that described test specimen is loaded of formation with described little platen; In the utility model, totally nine of described load cylinders, nine load cylinders are arranged into oil cylinder array, each is fixedly connected with the piston rod of each load cylinder of described oil cylinder array periphery with a little platen, the piston rod of a load cylinder of described oil cylinder array inner ring is fixedly connected with same large platen, and described large platen contacts with each the little platen around being distributed in described large platen.In big-size model test, 9 load cylinders are all implemented to load, and in the middle of only using when true three axles of small size load, the main load cylinder (oil cylinder of oil cylinder array inner ring) of exerting oneself loads.
When described test specimen is loaded, on described lower surface, be provided with steel square pad; Described steel square pad comprise bottom surface and with described bottom surface two sides connected vertically, and two sides vertical connection mutually.Steel square pad can guarantee that test specimen is stressed more even.
Described chute bottom is wider than the open side of described chute, prevents that the second loading frame from marking mounting bar.
Compared with prior art, the beneficial effect that the utility model has is: the utility model both can carry out small size test, can carry out big-size model test again, can not only complete the undersized true three-axis force of testing laboratory and learn test, simultaneously can be for measuring distortion and the destruction characteristic of large scale model sample under true triaxial stress state, solved the limitation of existing true triaxial test machine in specimen size, and test system architecture of the present utility model is simple, easy to operate, load evenly, saved cost.
Accompanying drawing explanation
Fig. 1 is the utility model one embodiment loading system stereographic map (during dress sample);
Fig. 2 is the utility model one embodiment loading system stereographic map (during test);
Fig. 3 is the utility model one embodiment loading system vertical view (during dress sample);
Fig. 4 is the utility model one embodiment loading system vertical view (during test);
Fig. 5 is the utility model one embodiment loading system front view (during dress sample);
Fig. 6 is the utility model one embodiment loading system front view (during test);
Fig. 7 is the utility model one embodiment the first loading frame stereographic map;
Fig. 8 is the utility model one embodiment the second loading frame stereographic map;
Fig. 9 is the moving device of the utility model one embodiment axle and increased pressure board overall diagram;
Figure 10 is the moving device of the utility model one embodiment axle and increased pressure board longitudinal sectional view;
Figure 11 is the utility model one embodiment guide rail and dolly one-piece construction figure;
Figure 12 is the utility model one embodiment steel square pad stereographic map.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises the first loading frame 1, the second loading frame 2, and described the first loading frame 1 comprises the upper surface that loads for Z-direction, relative with position, described upper surface for placing the lower surface of test specimen 8, the right side loading for X-direction, the left side relative with position, described right side, for the rear end face of Y-direction loading; On described upper surface, right side and/or left side, rear end face, be all fixed with the charger for described test specimen 8 is loaded; The first loading frame 1 front end face opening of described rear end face relative position; First loading frame 1 in described front end face outside one side of test specimen 8 (away from) is provided with mounting bar 10; On described the second loading frame 2, offer the chute 15 mating with described mounting bar 10 shape sizes; First loading frame 1 one sides in described front end face outside are fixed with 2 push cylinder 4 of sliding along described mounting bar 10 for promoting described the second loading frame 2.
Charger comprises that axle moves device base 13, moving device base 13 1 sides of described axle are fixed with the moving device holder 3(of axle and by axle, move device holder 3 and charger can be arranged on the first loading frame 1), moving device base 13 opposite sides of described axle are fixed with nine load cylinders 11, and nine load cylinders 11 are arranged into oil cylinder array, each is fixedly connected with the piston rod of each load cylinder of described oil cylinder array periphery with a little platen 12, the piston rod of a load cylinder 11 of described oil cylinder array inner ring is fixedly connected with same large platen 17, and described large platen 17 contacts with each the little platen 12 around being distributed in described large platen 17.
The utility model also comprises for test specimen 8 is transported to the conveying mechanism of lower surface through described front end face opening; Described conveying mechanism comprises two guide rails that be arranged in parallel 5 and is arranged on two guide rails 5 and the dolly 6 that can slide on described two guide rails 5; Same one end lower surface of described two guide rails 5 is all fixed with support bar 16, and described support bar 16 height and described the first loading frame 1 lower surface matched.
While loading test specimen, the second loading frame is moved on to a side of the first loading frame, guide rail 5 one end and the first loading frame are fixed, after loading, remove after guide rail 5 is fixed with dolly 6, the second loading frames resets and provide the counter-force that Y-direction loads to support.As shown in Figure 9, charger adopts compound loading mode, and 9 platens that each increased pressure board is not waited by the area corresponding with 9 load cylinders form, and load thus, thereby realize uniform load, and reduce the moving device maximum output requirement of axle.In big-size model test, 9 load cylinders are all implemented to load, and in the middle of only using when true three axles of small size load, the main load cylinder of exerting oneself loads.
This system has X, Y, tri-loading directions of Z, six loaded planar, three active loading surfaces, three passive loading surfaces.A wherein side of each loading direction is passive loading surface, the active loading surface that opposite side is comprised of load cylinder, increased pressure board.The loading system of three directions is independent separately, does not interfere with each other, and can synchronously load in proportion.1200 tons of axial (Z direction) maximum load power of loading system, guarantee to exert oneself 1000 tons; 600 tons of side direction (X Y-direction) maximum load power, guarantee to exert oneself 500 tons.Because specimen size scope is larger, the monolateral length of square test specimen is from 100mm to 1000mm, and during test, lifting surface area is according to specimen size and difference.When carrying out large scale physical experiments, for guaranteeing that on whole stress surface, distribution of force is even, improve the accuracy of test, need larger load-carrying area; And from the angle of manufacturing, processing, consider on the other hand, should reduce the diameter of oil cylinder and piston again as far as possible, alleviate weight of equipment, therefore, on each loading surface, be provided with nine load cylinders (as shown in Figure 9, Figure 10), the increased pressure board forming by the platen not waited by corresponding 9 areas is exerted pressure in the one side of test specimen.In the middle of arranging, load cylinder is the main load cylinder of exerting oneself, and middle main platen area corresponding to load cylinder of exerting oneself is A
0, other eight is that platen area corresponding to secondary load oil cylinder is S
0.During underway small size rock mass true triaxial test, specimen size is generally 300mm*300mm*300mm or 150mm*150mm*150mm, the main load cylinder of exerting oneself in the middle of only using during loading; In the experiment of physics large-sized model, nine load cylinders are all implemented to load, to ensure enough on-load pressures.Because equipment load application is larger, for bending, the distortion reducing because of load plate causes specimen surface stress distribution uneven as far as possible, select the load plate of larger thickness, make load be spread in more equably whole loaded planar.
During test, the first loading frame and the second loading frame bear whole operating loads as stress frame.The maximum feature of this combined type stress frame design is simple and practical, and can meet intensity, the rigidity requirement of design.
In the design of this frame system, consider function and the manufacturing process of each member, and the handling problem of sample in equipment, the utility model adopts push cylinder 4 to control the second loading frame and moves, by the large-sized model sample of guide rail and several tons of weights of dolly solution, can not manually move problem in place.One end, outside of the first loading frame front end face respectively has a push cylinder up and down, guarantees the Output power homogenization to the second loading frame.This equipment disposes guide rail and dolly.Before sample testing, by slip dovetail structure (mounting bar 10 and chute 15, chute 15 bottoms are wider than the open side of described chute 15) by push cylinder, remove the second loading frame, mounting guide rail and dolly be fixed on the first loading frame lower surface afterwards, and by guide rail and dolly, sample is pushed to (as shown in Fig. 1,3,5) in the first loading frame.For dolly can be exited smoothly after sample puts in place, in the lower surface of the first loading frame, jacking cylinder 7 is set, dolly 6 is placed the position of test specimens 8 and is offered away from the position of support bar 16 1 sides the groove 18 mating with the piston rod size of jacking cylinder 7, by jacking cylinder 7 by test specimen jacking, be removable guide rail and dolly, finally the second loading frame is retracted to original position fixing, started test (as shown in Fig. 2,4,6).
For the moving device of axle can load test specimen center, prevent eccentric load effect, need adjust sample position (as shown in figure 12) by making accurate steel square pad.By the steel square pad 14 of different size, realize the true triaxial test of different size rock type materials.Seepage tests preformed groove 19 1 above steel square pad is for test specimen centering, and one is used to follow-up waterfrac treatment and seepage tests reserved passageway.
Claims (7)
1. one kind becomes size true triaxial test system, it is characterized in that, comprise the first loading frame (1), the second loading frame (2), described the first loading frame (1) comprises the upper surface that loads for Z-direction, relative with position, described upper surface for placing the lower surface of test specimen (8), the right side loading for X-direction, the left side relative with position, described right side, for the rear end face of Y-direction loading; On described upper surface, right side and/or left side, rear end face, be all fixed with the charger for described test specimen (8) is loaded; The first loading frame (1) front end face opening of described rear end face relative position; First loading frame (1) in described front end face outside is provided with mounting bar (10); On described the second loading frame (2), offer the chute (15) mating with described mounting bar (10) shape size; Described front end face outside the first loading frame (1) one side is fixed with the push-pull mechanism sliding along described mounting bar (10) for promoting described the second loading frame (2).
2. change size true triaxial test system according to claim 1, is characterized in that, also comprises for test specimen (8) is transported to the conveying mechanism of lower surface through described front end face opening; Described conveying mechanism comprises two guide rails that be arranged in parallel (5) and is arranged on the dolly (6) that two guide rails (5) are upper and can above slide at described two guide rails (5); Same one end lower surface of described two guide rails (5) is all fixed with support bar (16), and described support bar (16) height and described the first loading frame (1) lower surface matched.
3. change size true triaxial test system according to claim 2, it is characterized in that, on described lower surface, be fixed with jacking cylinder (7), described dolly (6) is placed the position of test specimen (8) and is offered away from the position of described support bar (16) one sides the groove (18) mating with the piston rod size of described jacking cylinder (7).
4. according to the change size true triaxial test system one of claim 1～3 Suo Shu, it is characterized in that, described charger comprises that axle moves device base (13), moving device base (13) one sides of described axle are fixed with the moving device holder (3) of axle, moving device base (13) opposite side of described axle is fixed with a plurality of load cylinders (11), and described a plurality of load cylinder (11) is arranged into oil cylinder array, the piston rod of each load cylinder (11) of described oil cylinder array periphery is all fixedly connected with a little platen (12), the piston rod of all load cylinders (11) of described oil cylinder array inner ring is fixedly connected with the large platen of same (17), and described large platen (17) contacts with described little platen (12) and forms an increased pressure board (9) that described test specimen (8) is loaded.
5. change size true triaxial test system according to claim 4, it is characterized in that, totally nine of described load cylinders (11), nine load cylinders (11) are arranged into oil cylinder array, each is fixedly connected with the piston rod of each load cylinder of described oil cylinder array periphery with a little platen (12), the piston rod of a load cylinder (11) of described oil cylinder array inner ring is fixedly connected with same large platen (17), and described large platen (17) be distributed in described large platen (17) each little platen (12) around and contact.
6. change size true triaxial test system according to claim 5, is characterized in that, when described test specimen (8) is loaded, is provided with steel square pad (14) on described lower surface; Described steel square pad (14) comprise bottom surface and with described bottom surface two sides connected vertically, and two sides vertical connection mutually.
7. change size true triaxial test system according to claim 6, is characterized in that, described chute (15) bottom is wider than the open side of described chute (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111117.2U CN203732376U (en) | 2014-03-12 | 2014-03-12 | Variable dimension true triaxial test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111117.2U CN203732376U (en) | 2014-03-12 | 2014-03-12 | Variable dimension true triaxial test system |
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| Publication Number | Publication Date |
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| CN203732376U true CN203732376U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420111117.2U Expired - Lifetime CN203732376U (en) | 2014-03-12 | 2014-03-12 | Variable dimension true triaxial test system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822833A (en) * | 2014-03-12 | 2014-05-28 | 中国水电顾问集团中南勘测设计研究院有限公司 | Size variable true triaxial test system |
| CN106018860A (en) * | 2016-05-17 | 2016-10-12 | 重庆大学 | Test piece transfer mechanism for coal engineering test |
| CN108426768A (en) * | 2018-03-23 | 2018-08-21 | 东北大学 | A kind of accurate centering control method in interior true triaxial test rock sample position |
-
2014
- 2014-03-12 CN CN201420111117.2U patent/CN203732376U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822833A (en) * | 2014-03-12 | 2014-05-28 | 中国水电顾问集团中南勘测设计研究院有限公司 | Size variable true triaxial test system |
| CN103822833B (en) * | 2014-03-12 | 2016-03-16 | 中国电建集团中南勘测设计研究院有限公司 | A kind of change size true triaxial test system |
| CN106018860A (en) * | 2016-05-17 | 2016-10-12 | 重庆大学 | Test piece transfer mechanism for coal engineering test |
| CN108426768A (en) * | 2018-03-23 | 2018-08-21 | 东北大学 | A kind of accurate centering control method in interior true triaxial test rock sample position |
| CN108426768B (en) * | 2018-03-23 | 2019-06-04 | 东北大学 | A kind of accurate centering control method in interior true triaxial test rock sample position |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + Free format text: FORMER NAME: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Patentee after: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: HYDROCHINA ZHONGNAN ENGINEERING Corp. Patentee before: Institute of Geology and Geophysics, Chinese Academy of Sciences |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |