CN108760465A - The test specimen leveling instrument of hopkinson test - Google Patents
The test specimen leveling instrument of hopkinson test Download PDFInfo
- Publication number
- CN108760465A CN108760465A CN201810351928.2A CN201810351928A CN108760465A CN 108760465 A CN108760465 A CN 108760465A CN 201810351928 A CN201810351928 A CN 201810351928A CN 108760465 A CN108760465 A CN 108760465A
- Authority
- CN
- China
- Prior art keywords
- bar
- test
- rest
- hopkinson
- leveling instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention discloses a kind of test specimen leveling instruments of hopkinson test, including height-adjustable bearing, the bearing upper end is provided with support rest, and telescopically adjustable secondary bar is removably connected on the mobile jib of the support base, and the secondary bar both ends are separately connected Anping rest.The present invention is by supporting the height of rest to adjust the Level tune with steady pedestal, the central axis and the axis of incident bar and transmission bar of guarantee sample are on the same line, its efficiency can be also improved while improving test accuracy, and easy to operate, adjusting is fast, is suitable for the experiment of different size test specimens.
Description
Technical field
The present invention relates to hopkinson test devices, and in particular to the test specimen leveling instrument of hopkinson test.
Background technology
Split hopkinson press bar is the dynamic mechanical of now widely used study of rocks class material and concrete
The general mechanics method of energy.Since the tensile strength of rock type materials and concrete is much smaller than its compression strength, in impact load
Under often show as tensile failure, therefore the dynamic mechanical light of study of rocks class material and concrete considers that dynamic is pressurized
Mechanical property is inadequate, also needs to consider dynamic tension mechanical property.For fragile material, directly measures its tensile strength and compare
Difficulty, the most commonly used is Brazilian disk tests.Brazilian disk test is simple and convenient, when experiment only test specimen need to be radially clipped in into
It penetrates between bar and transmission bar.To ensure the precision of Brazilian disk test, the stress concentration in test specimen is avoided to cause test specimen premature
Failure, need to ensure test specimen in short transverse at intermediate cross-section the axis of diametric(al) and incident bar and transmission bar in same straight line
On.And existing leveling instrument is not easy to adjust, and cannot ensure the axis of test specimen center and incident bar and transmission bar on sustained height,
Error is big.
Invention content
Goal of the invention：The purpose of the present invention is to provide a kind of test specimen leveling instruments of hopkinson test, solve existing peace
It is inconvenient that level is adjusted, cannot ensure test specimen center with the axis of incident bar and transmission bar on sustained height, the big problem of error.
Technical solution：The test specimen leveling instrument of hopkinson test of the present invention, including height-adjustable bearing, institute
It states bearing upper end and is provided with support rest, telescopically adjustable secondary bar is removably connected on the mobile jib of the support base,
Dismantling connection has Anping rest.
Time bar rotation adapts to different experiments to meet leveling instrument for convenience, and the mobile jib of the support base is justified by connecting
Axis is connect with time bar.
In order to facilitate sample Anping, fixed support is provided between the support rest and secondary bar.
It is flexible in order to facilitate control time bar, it is provided with telescopic adjustment switch on the secondary bar, controls the flexible of time bar.
In order to facilitate control time bar rotation, rotation regulating switch is set on the secondary bar, controls time bar and is revolved around bearing
Turn.
In order to facilitate control time bar lifting, it is additionally provided with lift adjustment switch on the secondary bar, controls time bar lifting.
In order to which leveling instrument is stablized, the bearing includes mobile jib and steady pedestal, and the mobile jib is arranged on steady pedestal.
For the ease of the sample in the case of placement different tests, it is round on the downside of the support rest, supports on the upside of rest
In fluted body.
In order to make Anping rest be suitable for various sizes of test specimen, Anping rest upper end is curved surface, and curved surface is set
It is equipped with soft rubber material layer.
Advantageous effect：The present invention ensures sample by supporting the height of rest to adjust the Level tune with steady pedestal
Central axis on the same line, its efficiency can be also improved while improving test accuracy with the axis of incident bar and transmission bar,
And easy to operate, adjusting is fast, is suitable for the experiment of different size test specimens.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the test specimen leveling instrument of hopkinson test, including bearing, the bearing include mobile jib 2 and steady base
Seat 11, mobile jib 2 welding or it is nested by way of be arranged on steady pedestal 11,2 downside of mobile jib by with steady pedestal 11
It is connected to keep the stabilization of entire leveling instrument, the regulating switch 7 for adjusting height of support is provided on mobile jib 2,2 upper end of mobile jib passes through
Bolt is detachably connected support rest 1, and 1 downside of support rest is circle, and 1 upside of support rest is in fluted body.Pass through on mobile jib 2
Connection circular shaft 6 is connected with telescopically adjustable secondary bar 5, and secondary bar 5 includes cross bar and montant, and there are two montants and is connected to cross
Bar both ends are provided with rotation regulating switch 9, telescopic adjustment switch 10 and lift adjustment switch 8, telescopic adjustment switch 10 on secondary bar
The axial direction of the adjustable cross bar along secondary bar 5 of bar 5 is flexible, so that various sizes of sample can be clamped in system, rotation is adjusted
Switch 9 can be used for regulating device and be rotated around mobile jib 2, therefore leveling instrument can be realized for splitting by rotating regulating switch 9
The adjusting of the power and energy of experiment and two kinds of situations of compression test, 9 each grades of regulating switch of rotation all makes leveling instrument be rotated by 90 °,
Therefore the conversion of two kinds of test cases of diametral compression test and compression test can be quickly and efficiently realized.Lift adjustment switch 8 will be secondary
Bar 5 rises, and to be conveniently used for Anping sample, when starting diametral compression test or compression test, declines time bar 5, is clamped to avoid this
Influence when sample to the external force of sample application to test result.The cross bar both ends of secondary bar 5 are detachably connected by bolt respectively
Anping rest 3,3 upper end of Anping rest are curved surface, and curved surface is provided with soft rubber material layer so that Anping rest 3 is suitable for not
With the sample of size, sample is clamped due to shrinking time bar, and sample is a thick disk, setting soft rubber material can make up song
Error in rate.Fixed support 4 is provided between support rest 1 and secondary bar 5, fixed support 4 is mounted on time bar 5, Anping examination
The upside top to the lower part of support rest 1 of support 4 is fixed when sample, Anping rest 3 can coordinate support rest 1 that examination is smoothly clamped
Sample, fixed support 4 can improve Anping efficiency to test specimen.
Wherein, bearing is height-adjustable bearing, and the height of bearing is adjusted to be controlled by the regulating switch 7 on mobile jib 2,
Realize that the height of support rest 1 is adjusted, test specimen center and incident bar 13 and transmission bar when ensureing diametral compression test and compression test
On the same line, regulating switch is all Mechanical course to 14 axis.
Using the present invention carry out diametral compression test when, using telescopic adjustment switch 9 by the axis of the cross bar in secondary bar 5 with enter
The axis for penetrating bar 13 and transmission bar 14 is parallel.No. secondary bar is risen with lift adjustment switch 8, makes fixed support 4 and support rest 1
The position that downside is in contact, sample is placed on support rest 1, shortens the cross bar in time bar 5 using telescopic adjustment switch 10,
So that sample is clamped in Anping rest 3, while ensureing sample holder in the centre of Anping rest 3.It extends or contracts with regulating switch 7
Short mobile jib 2, it is ensured that the axis of test specimen center and incident bar 13 and transmission bar 14 is on the same line.Transmission bar 14 is pushed, is made
It penetrates 14 tail portion of the bar absorbing rod intrinsic with hopkinson test system to be in contact, moves horizontally steady pedestal 11, make on the right side of sample
It is in contact with transmission bar 14, then pushes incident bar 13, make to be in contact on the left of incident bar 13 and sample.With lift adjustment switch 8
Axial direction by Anping system along mobile jib 2 declines, and stays support rest 1 to support sample, that is, completes sample Anping.
When carrying out compression test using the present invention, the adjustment of No. secondary bar is rotated by 90 ° with rotation regulating switch 9, is made in time bar 5
Cross bar it is vertical with incident bar 13 and transmission bar 14.No. secondary bar is risen with lift adjustment switch 8, makes fixed support 4 and support
1 downside of rest is in contact, and sample is placed on support rest 1, shortens the cross bar in time bar 5 using telescopic adjustment switch 10,
So that sample is clamped in Anping rest 3, while ensureing sample holder in the centre of Anping rest 3.With regulating switch 1 elongation or
Shorten mobile jib 2, it is ensured that the axis of the center of sample and incident bar 13 and transmission bar 14 is on the same line.Transmission bar 14 is pushed,
So that 14 tail portion of transmission bar is in contact with absorbing rod, move horizontally steady pedestal 11, the sample right side is made to be in contact with transmission bar 14, then
Incident bar 13 is pushed, incident bar 13 is made to be in contact with the sample left side.With regulating switch 28 by Anping system along the axis of mobile jib 2
To decline, support rest 1 is stayed to support sample, that is, completes sample Anping.
Claims (9)
1. a kind of test specimen leveling instrument of hopkinson test, which is characterized in that including height-adjustable bearing, on the bearing
End is detachably provided with support rest (1), and telescopically adjustable secondary bar (5) is removably connected on the mobile jib (2) of the bearing,
Secondary bar (5) both ends are removably connected with Anping rest (3).
2. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that the mobile jib of the bearing
(2) it is connect with time bar (5) by connecting circular shaft (6).
3. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that the support rest (1)
Fixed support (4) is provided between secondary bar (5).
4. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that set on the secondary bar (5)
It is equipped with telescopic adjustment switch (10), controls the flexible of time bar (5).
5. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that set on the secondary bar (5)
Rotation regulating switch (9) is set, time bar is controlled and is rotated around bearing.
6. the test specimen leveling instrument of the hopkinson test according to claims 1, which is characterized in that the secondary bar (5)
On be additionally provided with lift adjustment switch (8), control the lifting of time bar.
7. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that the bearing includes mobile jib
(2) it is arranged on steady pedestal (11) with steady pedestal (11), the mobile jib (2).
8. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that the support rest (1)
Downside is circle, is in fluted body on the upside of support rest (1).
9. the test specimen leveling instrument of hopkinson test according to claim 1, which is characterized in that Anping rest (3)
Upper end is curved surface, and curved surface is provided with soft rubber material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351928.2A CN108760465A (en) | 2018-04-18 | 2018-04-18 | The test specimen leveling instrument of hopkinson test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810351928.2A CN108760465A (en) | 2018-04-18 | 2018-04-18 | The test specimen leveling instrument of hopkinson test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108760465A true CN108760465A (en) | 2018-11-06 |
Family
ID=64011017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810351928.2A Pending CN108760465A (en) | 2018-04-18 | 2018-04-18 | The test specimen leveling instrument of hopkinson test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108760465A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708956A (en) * | 2019-01-17 | 2019-05-03 | 浙江大学 | A kind of positioning device for dynamic splitting test |
| CN109708955A (en) * | 2019-01-17 | 2019-05-03 | 浙江大学 | A kind of positioning device for Hopkinson pressure bar |
| CN110286028A (en) * | 2019-07-29 | 2019-09-27 | 南阳理工学院 | A kind of multidimensional coupled static-dynamic loadingi Rock Mechanics Test device |
| CN112014247A (en) * | 2020-08-12 | 2020-12-01 | 中国人民解放军空军工程大学 | Universal test piece supporting and positioning device of Hopkinson pressure bar and using method |
| CN113281159A (en) * | 2021-07-21 | 2021-08-20 | 中国人民解放军国防科技大学 | Bidirectional size-adjustable test piece positioning and supporting device |
| CN113740183A (en) * | 2021-07-15 | 2021-12-03 | 西北工业大学 | Adjusting device and method for electromagnetic Hopkinson bar main coil |
| CN113740183B (en) * | 2021-07-15 | 2024-04-23 | 西北工业大学 | Device and method for adjusting main coil of electromagnetic Hopkinson bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101047U (en) * | 2014-09-05 | 2015-01-14 | 天津市科力起重设备有限公司 | A kind of spirit-leveling instrument clamping levelling device |
| CN105067359A (en) * | 2015-07-24 | 2015-11-18 | 山西省交通科学研究院 | Bridge load test loading position molding instrument |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN105445093A (en) * | 2015-12-17 | 2016-03-30 | 安徽理工大学 | Gradienter for split-Hopkinson-pressure-bar splitting test piece |
| CN207114309U (en) * | 2017-08-15 | 2018-03-16 | 河海大学 | A kind of bogey that more size rock samples are tested for SHPB |
-
2018
- 2018-04-18 CN CN201810351928.2A patent/CN108760465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101047U (en) * | 2014-09-05 | 2015-01-14 | 天津市科力起重设备有限公司 | A kind of spirit-leveling instrument clamping levelling device |
| CN105067359A (en) * | 2015-07-24 | 2015-11-18 | 山西省交通科学研究院 | Bridge load test loading position molding instrument |
| CN105424470A (en) * | 2015-11-18 | 2016-03-23 | 太原理工大学 | Clamping device and experiment method for split Hopkinson torsion bar test piece |
| CN105445093A (en) * | 2015-12-17 | 2016-03-30 | 安徽理工大学 | Gradienter for split-Hopkinson-pressure-bar splitting test piece |
| CN207114309U (en) * | 2017-08-15 | 2018-03-16 | 河海大学 | A kind of bogey that more size rock samples are tested for SHPB |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708956A (en) * | 2019-01-17 | 2019-05-03 | 浙江大学 | A kind of positioning device for dynamic splitting test |
| CN109708955A (en) * | 2019-01-17 | 2019-05-03 | 浙江大学 | A kind of positioning device for Hopkinson pressure bar |
| CN110286028A (en) * | 2019-07-29 | 2019-09-27 | 南阳理工学院 | A kind of multidimensional coupled static-dynamic loadingi Rock Mechanics Test device |
| CN110286028B (en) * | 2019-07-29 | 2022-02-22 | 南阳理工学院 | Multidimensional dynamic and static combined rock loading mechanical experiment device |
| CN112014247A (en) * | 2020-08-12 | 2020-12-01 | 中国人民解放军空军工程大学 | Universal test piece supporting and positioning device of Hopkinson pressure bar and using method |
| CN113740183A (en) * | 2021-07-15 | 2021-12-03 | 西北工业大学 | Adjusting device and method for electromagnetic Hopkinson bar main coil |
| CN113740183B (en) * | 2021-07-15 | 2024-04-23 | 西北工业大学 | Device and method for adjusting main coil of electromagnetic Hopkinson bar |
| CN113281159A (en) * | 2021-07-21 | 2021-08-20 | 中国人民解放军国防科技大学 | Bidirectional size-adjustable test piece positioning and supporting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108760465A (en) | The test specimen leveling instrument of hopkinson test | |
| CN105606357B (en) | A kind of aircraft test of static strength loading device | |
| CN106501098A (en) | Multiaxial loading ultrasound torsional fatigue test device | |
| CN204128889U (en) | A kind of beam bending experiment loading unit | |
| CN105445093A (en) | Gradienter for split-Hopkinson-pressure-bar splitting test piece | |
| CN105737964A (en) | Calibration device for error of four corners of weighing sensor | |
| CN211665806U (en) | Tensile detection device of precast pile | |
| CN210195335U (en) | Civil construction support frame | |
| CN208026548U (en) | Test specimen leveling device | |
| CN106442148A (en) | Fragility detector used for chain pin shaft | |
| CN205228932U (en) | Hopkinson pressure bar brazilian test test piece anping appearance | |
| CN205981920U (en) | A fragility detector for chain round pin axle | |
| CN103712858A (en) | Spiral type loading positioning device for column | |
| CN208458749U (en) | A kind of Surveying Engineering high accuracy gyroscope instrument adjusting bracket | |
| CN209512865U (en) | A kind of multi-functional architectural design special measurement device | |
| CN209840945U (en) | Shaft key groove symmetry measuring device | |
| CN201492526U (en) | Adjustable operation tray | |
| CN207742046U (en) | A kind of composite material electric pole mechanical property test device | |
| CN209408434U (en) | A kind of lift tooling platform | |
| CN104695329A (en) | Adjustable center returning base of center penetrating jack | |
| CN219104622U (en) | Displacement calibrating device suitable for fatigue testing machine | |
| CN218674537U (en) | A unipolar testing arrangement for static sand pressure load | |
| CN209927401U (en) | Double-freedom-degree vibration table system | |
| CN219414017U (en) | Device for supporting truss arm rod and adjusting level | |
| CN218468648U (en) | Displacement test support for large-scale structural test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |
|
| RJ01 | Rejection of invention patent application after publication |