CN1514223A - Triaxial testing machine vertical direction load force frame floating device and method - Google Patents
Triaxial testing machine vertical direction load force frame floating device and method Download PDFInfo
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- CN1514223A CN1514223A CNA031341500A CN03134150A CN1514223A CN 1514223 A CN1514223 A CN 1514223A CN A031341500 A CNA031341500 A CN A031341500A CN 03134150 A CN03134150 A CN 03134150A CN 1514223 A CN1514223 A CN 1514223A
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 39
- 238000009434 installation Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 13
- 239000010727 cylinder oil Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
In the present invention, under the loaded frame is a hydraulic jack as pressure liquid oil is in oil cavity to make piston hold out against base of loaded frame, six compression springs set on tray of jack cylinder are also held out against base of loaded frame. The oil can be sent into jack oil cavity in designed pressure value by adjusting pressure reducing valve. Vertical loaded frame can be displaced up and down to ensure test piece to be at original position under double actions of oil cylinder piston and spring to eliminate influence caused by level frictional resistance to vertical force for raising test accuracy when test piece is forced vertically and frictional resistance limit is generated from acting force in level direction to test piece caused by deformation displacement of support device.
Description
Technical field: the invention belongs to vertical direction and load the forces testing technical field.
Background technology: test specimen is done on the triaxial test machine in the three received strength test process, because test specimen and support member are elastic component, will inevitably produce distortion in the loading process and cause producing corresponding displacement, therefore, test specimen is stressed and when producing displacement on a certain direction, the prevention of the frictional resistance that will inevitably be subjected to the stressed of other both direction and produce, thus make the acting force on this direction really all not act on the test specimen, cause the error of test.For example, a test specimen, Z is 20T to being stressed, X is 100T to being stressed, and Y is to the 100T that is stressed, usually be coated with cup grease on the compression face, its friction factor is approximately 0.04, is 100T * 0.04+100T * 0.04=8T to, Y-Y to the frictional resistance that produces because of being stressed at X X then, and then Z is 20T-8T=12T to the pressure that acts on the test specimen, experimental error is very big, must eliminate this error and could improve test accuracy.
At present, on the triaxial test machine, X-X, stressed of Y-Y direction all have been equipped with floating installation, thus little in the test error of X-X, Y-Y direction, but good floating installation is not arranged as yet stressed of Z-Z direction.
Summary of the invention: the triaxial test machine vertical direction that purpose of the present invention just provides a kind of Z-Z of reducing direction test error loads stressed floating installation and method.
Technical solution of the present invention is, a kind of triaxial test machine vertical direction loads stressed floating installation, by hydraulic jack, the pallet 11 of spring 12 is installed and places vertical stressed 13 on hydraulic jack, the pallet 11 to constitute, hydraulic jack comprises the cylinder body 8 of lifting jack, the oil cylinder plunger 9 of lifting jack and the hydraulic system that is made of stop valve 1, reduction valve 2, adjustable throttling 3, retaining valve 4, accumulator 5, tensimeter 6, stop valve 7, and pallet 11 is installed on the cylinder body 8 of hydraulic jack by ball thrust bearing 10.
A kind of triaxial test machine vertical direction loads stressed floating installation, also comprises orienting sleeve 14, and vertical stressed 13 moves up and down along orienting sleeve 14.
The using method that a kind of triaxial test machine vertical direction loads stressed floating installation is, when oil cylinder does not enter pressure oil, vertical stressed 13 is pressed on the pallet 11, open stop valve 1, fluid will enter the oil cylinder oil pocket through reduction valve 2, adjustable throttling 3, retaining valve 4, regulate the pressure of reduction valve 2 then, raising along with oil pressure, vertical stressed 13 is lifted along orienting sleeve 14, after leaving pallet 11, spring 12 stretches out, and when the gap is 2～5mm between vertical stressed 13 and the pallet 11, promptly regulates and finishes; Close stop valve 1 then, test specimen 15 at Z after stressed, jack oil cylinder plug 9 is subjected to displacement in the Z direction with vertical stressed 13, the jack oil cavity volume will change, when volume becomes big, fluid will flow to oil pocket by accumulator 5, otherwise, fluid will flow to accumulator 5 by oil pocket, make vertical stressed 13 to fluctuate automatically.
Technical conceive of the present invention is that hydraulic jack of installation below vertical stressed 13 can be sent into pressure hydraulic oil in the plunger 9 following oil pockets of hydraulic jack, makes plunger withstand vertical stressed 13 base.By ball retaining bearing 10 pallet 11 is installed on the cylinder body 8 of hydraulic jack, 6 compression springs 12 are installed above the pallet, they also withstand Z to stressed base.
Oil sources is from the Hydraulic Station of triaxial test machine, fluid enters reduction valve 2 by stop valve 1, regulating this valve can reduce to the desired force value of this floating installation to oil pressure and enter adjustable throttling 3, the effect of this valve is the size that is used for regulating the pressure oil flow, so that the convenience and the accuracy of observation and regulating and controlling floating installation.The effect of retaining valve 4 is that even close oil pump, floating installation still is in normal duty after the floating installation debugging is finished.When test specimen at Z after stressed, make test specimen 15 when the Z direction is subjected to displacement owing to deforming at Z direction test specimen 15 and bracing or strutting arrangement, be subjected to X-X, Y-Y direction and during the restriction of the frictional resistance that produces to the acting force of test specimen, Z to stressed under the double action of oil cylinder plunger 9 and spring 12, make vertical stressed 13 displacement of making above-below direction along orienting sleeve 14, guaranteeing that test specimen still is on the original position, eliminated Z and be subjected to X-X, Y-Y directive effect power and the influence of the frictional resistance that produces to acting force.The effect of accumulator 5 is in the floating installation use, when vertical stressed 13 when the Z direction is subjected to displacement, corresponding displacement also takes place in oil cylinder plunger 9, the oil cylinder oil chamber volume will change, and when volume becomes big, fluid will flow to oil pocket by accumulator 5, otherwise, fluid will flow to accumulator 5 by oil pocket, with reach vertical stressed 13 in process of the test, effect automatically fluctuates.The effect of tensimeter 6 is when regulating floating installation, and the situation of change of observing oil pressure is to determine the state of floating installation.The effect of stop valve 7 is when readjusting floating installation, at first bleeds off the fluid in the oil cylinder, so that according to requirement of experiment, readjusts the state of floating installation.
The invention has the beneficial effects as follows, guarantee that test specimen still is on the original position, eliminated by rubbing of horizontal direction generation and examined the influence of resistance, improved the accuracy of test vertical force.
Description of drawings: the present invention is further illustrated below in conjunction with drawings and Examples.
Fig. 1 is test specimen stressing conditions figure among the present invention.
Fig. 2 is that vertical direction loads stressed floating installation schematic diagram among the present invention.
Among the figure, stop valve 1, reduction valve 2, adjustable throttling 3, retaining valve 4, accumulator 5, tensimeter 6, stop valve 7, the cylinder body 8 of hydraulic jack, the oil cylinder plunger 9 of hydraulic jack, ball thrust bearing 10, pallet 11, spring 12, vertical stressed 13, orienting sleeve 14, test specimen 15.
Embodiment: the bottom that test specimen 15 fixed placement vertical direction in the triaxial test machine is loaded stressed, when oil cylinder does not enter pressure oil, whole Z will be pressed on the pallet 11 to stressed, open stop valve 1, fluid will enter the oil cylinder oil pocket through reduction valve 2, adjustable throttling 3, retaining valve 4, slowly regulate the pressure of reduction valve then, raising gradually along with oil pressure, Z can lift along orienting sleeve 14 gradually to stressed, and leave pallet 11, spring 12 stretches out gradually, when Z when gap between stressed and the pallet reaches 2-5mm, promptly calculate to regulate and finish.Close stop valve 1 then, floating installation can come into operation.When test specimen at Z after stressed, owing to test specimen Z to bracing or strutting arrangement deform make test specimen at Z to being subjected to displacement, be subjected to X-X, Y-Y direction and during the restriction of the frictional resistance that produces to the acting force of test specimen, Z to stressed 13 under the double action of oil cylinder plunger 9 and spring 12, make Z to stressed 13 displacement of making above-below direction along orienting sleeve 14, guaranteeing that test specimen still is on the original position, eliminated Z and be subjected to X-X, Y-Y directive effect power and the influence of the frictional resistance that produces to acting force.Accumulator 5 is in the floating installation course of work, when Z to stressed 13 when the Z direction is subjected to displacement, corresponding displacement also takes place in lifting jack plunger 9, the jack oil cavity volume will change, and when volume becomes big, fluid will flow to oil pocket by accumulator, otherwise, fluid will flow to accumulator by oil pocket, with reach Z to stressed 13 in process of the test, fluctuate automatically.
Claims (3)
1. a triaxial test machine vertical direction loads stressed floating installation, it is characterized in that, by hydraulic jack, the pallet (11) of spring (12) is installed and places hydraulic jack, vertical stressed (13) on the pallet (11) constitute, hydraulic jack comprises the cylinder body (8) of lifting jack, the oil cylinder plunger (9) of lifting jack and by stop valve (1), reduction valve (2), adjustable throttling (3), retaining valve (4), accumulator (5), tensimeter (6), the hydraulic system that stop valve (7) constitutes, pallet (11) is installed on the cylinder body (8) of hydraulic jack by ball thrust bearing (10).
2. a kind of triaxial test machine vertical direction according to claim 1 loads stressed floating installation, it is characterized in that also comprise orienting sleeve (14), vertical stressed (13) move up and down along orienting sleeve (14).
3. use according to claim 1,2 described a kind of triaxial test machine vertical direction load the method for stressed floating installation, it is characterized in that, when oil cylinder does not enter pressure oil, vertical stressed (13) are pressed on the pallet (11), open stop valve (1), fluid will be through reduction valve (2), adjustable throttling (3), retaining valve (4) enters the oil cylinder oil pocket, regulate the pressure of reduction valve (2) then, raising along with oil pressure, lift along orienting sleeve (14) vertical stressed (13), leave pallet (11) after, spring (12) stretches out, when the gap is 2～5mm between vertical stressed (13) and the pallet (11), promptly regulates and finish; Close stop valve (1) then, test specimen (15) at Z after stressed, jack oil cylinder plug (9) is subjected to displacement in the Z direction with vertical stressed (13), the jack oil cavity volume will change, when volume becomes big, fluid will flow to oil pocket by accumulator (5), otherwise, fluid will flow to accumulator (5) by oil pocket, and vertical stressed (13) are fluctuated automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134150 CN1212510C (en) | 2003-08-20 | 2003-08-20 | Triaxial testing machine vertical direction load force frame floating device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134150 CN1212510C (en) | 2003-08-20 | 2003-08-20 | Triaxial testing machine vertical direction load force frame floating device and method |
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| Publication Number | Publication Date |
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| CN1514223A true CN1514223A (en) | 2004-07-21 |
| CN1212510C CN1212510C (en) | 2005-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03134150 Expired - Fee Related CN1212510C (en) | 2003-08-20 | 2003-08-20 | Triaxial testing machine vertical direction load force frame floating device and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347544C (en) * | 2005-01-07 | 2007-11-07 | 清华大学 | Large-sized multifunction material three-shaft static-dynamic test machine |
| CN101982753A (en) * | 2010-10-18 | 2011-03-02 | 山东科技大学 | Testing device for coal gangue three-dimensional compression physical test |
| CN101603900B (en) * | 2009-07-15 | 2011-05-25 | 河海大学 | Self-balancing test device and method for directly testing axial tensile strength of early-age concrete |
| CN102135478A (en) * | 2011-01-07 | 2011-07-27 | 中国海洋石油总公司 | Triaxial test device for testing transubstantiation of sediments of gas hydrate |
| CN102493967A (en) * | 2011-11-21 | 2012-06-13 | 三一汽车起重机械有限公司 | Crane, rotation control system thereof and rotation buffering valve of crane |
| CN103047202A (en) * | 2012-09-28 | 2013-04-17 | 江苏南华地下空间研究所有限公司 | Hydraulic system of comprehensive experiment platform |
| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN109765106A (en) * | 2019-01-08 | 2019-05-17 | 上海航天精密机械研究所 | Three-dimensional loading system and method applied to cylindrical product |
| CN110987689A (en) * | 2018-10-03 | 2020-04-10 | 株式会社三丰 | Hardness tester |
| CN112253574A (en) * | 2020-10-26 | 2021-01-22 | 大连理工大学 | Control method for adjusting maximum output load of loading hydraulic cylinder |
-
2003
- 2003-08-20 CN CN 03134150 patent/CN1212510C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347544C (en) * | 2005-01-07 | 2007-11-07 | 清华大学 | Large-sized multifunction material three-shaft static-dynamic test machine |
| CN101603900B (en) * | 2009-07-15 | 2011-05-25 | 河海大学 | Self-balancing test device and method for directly testing axial tensile strength of early-age concrete |
| CN101982753A (en) * | 2010-10-18 | 2011-03-02 | 山东科技大学 | Testing device for coal gangue three-dimensional compression physical test |
| CN101982753B (en) * | 2010-10-18 | 2013-03-27 | 山东科技大学 | Testing device for coal gangue three-dimensional compression physical test |
| CN102135478A (en) * | 2011-01-07 | 2011-07-27 | 中国海洋石油总公司 | Triaxial test device for testing transubstantiation of sediments of gas hydrate |
| CN102493967A (en) * | 2011-11-21 | 2012-06-13 | 三一汽车起重机械有限公司 | Crane, rotation control system thereof and rotation buffering valve of crane |
| CN103047202A (en) * | 2012-09-28 | 2013-04-17 | 江苏南华地下空间研究所有限公司 | Hydraulic system of comprehensive experiment platform |
| CN103047202B (en) * | 2012-09-28 | 2016-12-21 | 江苏南华地下空间研究所有限公司 | The hydraulic system of synthesis experiment platform |
| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN108414348B (en) * | 2018-05-07 | 2020-05-26 | 绍兴文理学院 | True triaxial test system for testing rock and implementation method thereof |
| CN110987689A (en) * | 2018-10-03 | 2020-04-10 | 株式会社三丰 | Hardness tester |
| CN110987689B (en) * | 2018-10-03 | 2024-05-14 | 株式会社三丰 | Hardness tester |
| CN109765106A (en) * | 2019-01-08 | 2019-05-17 | 上海航天精密机械研究所 | Three-dimensional loading system and method applied to cylindrical product |
| CN112253574A (en) * | 2020-10-26 | 2021-01-22 | 大连理工大学 | Control method for adjusting maximum output load of loading hydraulic cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1212510C (en) | 2005-07-27 |
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