CN205483803U - Mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps - Google Patents
Mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps Download PDFInfo
- Publication number
- CN205483803U CN205483803U CN201620251904.6U CN201620251904U CN205483803U CN 205483803 U CN205483803 U CN 205483803U CN 201620251904 U CN201620251904 U CN 201620251904U CN 205483803 U CN205483803 U CN 205483803U
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- China
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- half arc
- capping
- soft rock
- brazil
- engaging lug
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps, it includes the half arc closing cap that four block structures are the same, the outer wall of arc of half arc closing cap is provided with the engaging lug, the threaded hole of processing on the engaging lug, the friction groove structure has all been processed to the outer wall of four and half arc closing caps, the relative connection is arranged between the four and half arc closing caps, link to each other through adjustable bolt mechanism between the two and half arc closing caps of opposite face, the lateral wall center of half arc closing cap has all processed the incision. The problem of be stressed not uniformly action and along structure aspect fracture of terminal surface appears in stratiform soft rock and soft mud stone under anchor clamps is solved, also solve simultaneously the rock specimen and take place local crushing problem with filler strip contact department.
Description
Technical field
This utility model relates to a kind of auxiliary clamp being applicable to stratiform soft rock Brazil disk split test, is mainly used in indoor rock mechanics experiment, measures the tensile strength of rock.
Background technology
The tensile strength of rock is one of important indicator for reflection mechanical properties of rock, is also a control parameter during the design of rock engineering structure is analyzed with security and stability.The tensile strength method measuring rock at present mainly has direct tensile test and Indirect Tensile Tests two kinds.Complete owing to direct tensile test is the most difficult, generally use the tensile strength of Indirect Tensile Tests method test rock, Brazil's splitting test method is one of standard method of test rock sample tensile strength the most in the world, owing to the test specimen stress coincidence theory of Brazil's split the law is analyzed, the tensile strength of rock can be calculated exactly, be therefore widely adopted.But for the soft rock of stratiform and soft mud stone etc., just cannot measure the tensile strength of rock sample exactly with Brazil's split the law, because when testing the tensile strength of this rocks, upper and lower press strip is pressed into the inside of test specimen.nullIn addition，The problem occurring in that end face to be stressed uneven effect in the fixture process of the test using patent " a kind of Brazilian disc end face diametral compression test fixture " and to rupture along structural level，For this problem，On the basis of the fixture of ultimate principle that the present invention cleaves based on Brazil and patent " a kind of Brazilian disc end face diametral compression test fixture "，Have devised a kind of new test auxiliary clamp，Avoid in the fixture process of the test using patent " a kind of Brazilian disc end face diametral compression test fixture " (authorizing announcement CN204594801U), occur in that end face is stressed uneven effect and the problem that ruptures along structural level，Rock sample pressurized end face uniform force is made to protect the globality of rock sample end face with the soft effect using rubber，Prevent soft rock to be stressed and rupture，The significantly more efficient softness generation reduced due to layer structure plane and the rock sample impact on test，Make test record tensile strength and be more nearly the actual tensile strength of rock sample.
Utility model content
This test auxiliary clamp is mainly used in solving stratiform soft rock and soft mud stone and occurs that under the fixture of patent " a kind of Brazilian disc end face diametral compression test fixture " (authorizing announcements CN204594801U) end face is stressed uneven effect and along the problem of structural level cracking, the most also solves rock sample and occur local to crush problem with filler strip contact position.
For reaching above-mentioned purpose, design of the present utility model is: a kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test, it includes the half arc capping that four block structures are identical, the arc outer wall face of described half arc capping is provided with engaging lug, and described engaging lug is threaded hole；The outside wall surface of described four and half arc cappings is all machined with frictional groove structure；Relatively connecting layout between described four and half arc cappings, be connected by adjustable bolt mechanism between two and half arc cappings of opposite face, the sidewall center of described half arc capping is all machined with otch.
The internal face of described half arc capping is provided with rubber layer.
Described adjustable bolt mechanism includes lower threaded post, it is provided with minor thread post in lower threaded post, minor thread post and upper thread bush constitute threaded engagement and connect, lower threaded post and upper thread bush close with the corresponding threaded holes of engaging lug after connecting simultaneously and are connected, end at upper thread bush connects top nut, and the end in lower threaded post connects lower nut.
After the half arc cover combination that described four block structures are identical, its four engaging lug symmetrically structures are arranged.
The Thickness scope of described half arc capping is 3-8mm, and Sidewall Height span is 13-18mm.
This utility model has the advantages that:
In use, the sample processed is bondd by binding agent and half arc capping inwall rubber layer, and the engaging lug of upper lower half arc capping is passed with adjustable bolt mechanism, in regulation, thread bush and the lower rotatable bolt of threaded post are allowed to airtight laminating, top nut and lower nut is used to be locked, then auxiliary clamp is put in the fixture of patent " a kind of Brazilian disc end face diametral compression test fixture " (authorizing announcement CN204594801U), and whole device is positioned over inside test apparatus loads, extruding force is produced by voussoir, half arc capping is opened to both sides, half arc capping simultaneously produces tensile stress to sample, sample is carried out Splitting Tensile Test.The tensile strength of rock is calculated by the result of the test collected.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is this utility model fixture bulk testing schematic diagram.
Fig. 2 is this utility model half arc closure construction schematic diagram.
Fig. 3 is thread bush and lower threaded post fit structure schematic diagram on this utility model.
Fig. 4 is thread bush structural representation on this utility model.
Fig. 5 is threaded stud structure schematic diagram under this utility model.
In figure: frictional groove structure 1, half arc capping 2, engaging lug 3, top nut 4, upper thread bush 5, lower threaded post 6, lower nut 7, rock sample 8, otch 9, rubber layer 10, minor thread post 11.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further.
Seeing Fig. 1-5, a kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test, it includes that the half arc capping 2 that four block structures are identical, the arc outer wall face of described half arc capping 2 are provided with engaging lug 3, described engaging lug 3 is threaded hole；The outside wall surface of described four and half arc cappings 2 is all machined with frictional groove structure 1；Relatively connecting layout between described four and half arc cappings 2, be connected by adjustable bolt mechanism between two and half arc cappings 2 of opposite face, the sidewall center of described half arc capping 2 is all machined with otch 9.
Further, the internal face of described half arc capping 2 is provided with rubber layer 10.
Further, soft rock can be protected by rubber layer 10, play cushioning effect so that rock sample pressurized end face uniform force protects the globality of rock sample end face with the soft effect using rubber, prevent soft rock to be subject to cover pressure and rupture.
Further, described adjustable bolt mechanism includes lower threaded post 6, it is provided with minor thread post 11 in lower threaded post 6, minor thread post 11 and upper thread bush 5 constitute threaded engagement and connect, lower threaded post 6 and upper thread bush 5 close with the corresponding threaded holes of engaging lug 3 after connecting simultaneously and are connected, end at upper thread bush 5 connects top nut 4, and the end in lower threaded post 6 connects lower nut 7.The length of whole adjustable bolt can be regulated by rotating upper thread bush 5 and then can adapt to different rock sample height.
Further, after half arc capping 2 combination that described four block structures are identical, its four engaging lug 3 symmetrically structures are arranged.
Further, the rubber layer 10 of the half arc capping 2 that described four block structures are identical carries out airtight laminating by AB glue mixed liquor to rock sample 8.
In the present embodiment:
Capping and the sidewall thickness span of described half arc capping 2 are 3 ~ 8mm, and circular arc interior diameter is 56mm, and side Sidewall Height span is 13 ~ 18mm, and engaging lug 3 height is 10mm.
The a diameter of 16mm of lower threaded post 6 of described adjustable bolt mechanism, a diameter of 8mm of minor thread post 11.
One layer of rubber 8 of place mat between described every piece of capping inwall and rock sample contact, built-in rubber is paved with survey in capping, and thickness is 3mm.
Described each half arc covers 2 middles, side an otch 9, and Opening length is 10mm, and width is 5mm.
This utility model device specific works principle and work process be:
1, prepare the cylinder rock sample 2 of diameter 50mm, long 40mm, two bottom surfaces are polished smooth, each comfortable two cylinder nose circle faces mark a diameter line with black marking pen, be used for being directed at the diameter limit of two cappings.
2, with clear water, half arc that four pieces of identical bands cover is covered 2 inner wall cleanings totally, and dry with absorbent paper.Use epoxide resin AB glue to cover the inwall of 2 at half arc as binding agent uniform application, rubber layer 10 place mat is compressed bonding in inwall and air-dries；The rock sample indicating diameter line is positioned in this fixture, makes that arcs capping in both sides half is 2-in-1 holds together to align diameter line, compress to cover gently and wait to air-dry.
3, by four bolts of adjustable bolt mechanism, the screwed hole of external engaging lug 3 below capping is upward through top screwed hole successively, bolt height is regulated by swivel bolt, make to cover up and down to couple together, then by nut through bolt two ends, fixed by rotation nut and cover up and down, make middle rock sample more fit.
4, put into the entirety that rock sample 8 and auxiliary clamp connect to the fixture of patent " a kind of Brazilian disc end face diametral compression test fixture " (authorizing announcement CN204594801U) links and fix tightly.Two voussoirs are respectively clamped in two upper and lower wedge mouths of fixture, then it are placed on RMT-150C test apparatus.
5, operating instrument starts test, instrument pressure head applies the pressure of vertical direction, upper and lower two voussoirs are pressed into along wedge mouth, the rectangle steel disc in the fixture of patent " a kind of Brazilian disc end face diametral compression test fixture " (authorizing announcement CN204594801U) is made to be subjected to displacement in the opposite direction, simultaneously because there is rightabout displacement together with producing friction between rectangle steel disc with the capping of circular arc steel disc and driving half arc capping 2, the extruding force making half arc cover between rubber layer 10 and the sample of 2 inwalls due to squeezing action produces the pulling force in opposite direction to sample, until sample produces the i.e. sample of drawing crack seam and destroys stopping test.
6, after off-test, whole grip device is unloaded from tester, then fixture is separated with sample.
7, peak load P deriving this test in a computer substitutes in formula σ=2P/ π DL(formula: σ rock sample tensile strength MPa；P cleaves payload values N；D rock sample diameter mm；L rock sample thickness mm) calculate rock tensile strength.
In conjunction with accompanying drawing, embodiment of the present utility model is explained in detail, but this utility model is not limited to above-mentioned embodiment.Above-described embodiment all in claims, can be modified by technical staff without prejudice to innovative point of the present utility model and operating procedure.Protection domain of the present utility model, should cover such as claims of the present utility model.
Claims (5)
1. the auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test, it is characterized in that: it includes half arc capping (2) that four block structures are identical, the arc outer wall face of described half arc capping (2) is provided with engaging lug (3), and described engaging lug is threaded hole on (3)；The outside wall surface of described four and half arcs capping (2) is all machined with frictional groove structure (1)；Relatively connecting layout between described four and half arcs capping (2), be connected by adjustable bolt mechanism between two and half arcs capping (2) of opposite face, the sidewall center of described half arc capping (2) is all machined with otch (9).
A kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test the most according to claim 1, it is characterised in that: the internal face of described half arc capping (2) is provided with rubber layer (10).
A kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test the most according to claim 1, it is characterized in that: described adjustable bolt mechanism includes lower threaded post (6), it is provided with minor thread post (11) on lower threaded post (6), minor thread post (11) and upper thread bush (5) constitute threaded engagement and connect, lower threaded post (6) and upper thread bush (5) close with the corresponding threaded holes of engaging lug (3) after connecting simultaneously and are connected, end at upper thread bush (5) connects top nut (4), end in lower threaded post (6) connects lower nut (7).
A kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test the most according to claim 1 and 2, it is characterised in that: after half arc capping (2) combination that described four block structures are identical, its four engaging lug (3) symmetrically structures are arranged.
A kind of auxiliary clamp being primarily adapted for use in stratiform soft rock Brazil disk split test the most according to claim 1, it is characterised in that: the Thickness scope of described half arc capping (2) is 3-8mm, and Sidewall Height span is 13-18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620251904.6U CN205483803U (en) | 2016-03-29 | 2016-03-29 | Mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620251904.6U CN205483803U (en) | 2016-03-29 | 2016-03-29 | Mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps |
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| Publication Number | Publication Date |
|---|---|
| CN205483803U true CN205483803U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620251904.6U Expired - Fee Related CN205483803U (en) | 2016-03-29 | 2016-03-29 | Mainly be applicable to stratiform soft rock brazil disc brazilian test's supplementary anchor clamps |
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| CN (1) | CN205483803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545551A (en) * | 2016-10-29 | 2017-03-29 | 安徽旭虹机械设备有限公司 | A kind of molectron for aiding in connection |
-
2016
- 2016-03-29 CN CN201620251904.6U patent/CN205483803U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545551A (en) * | 2016-10-29 | 2017-03-29 | 安徽旭虹机械设备有限公司 | A kind of molectron for aiding in connection |
| CN106545551B (en) * | 2016-10-29 | 2019-05-28 | 安徽旭虹机械设备有限公司 | A kind of sub-assembly for assisting connecting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170329 |