CN202599747U - Guide support for concrete core sample extractor - Google Patents
Guide support for concrete core sample extractor Download PDFInfo
- Publication number
- CN202599747U CN202599747U CN2012202693364U CN201220269336U CN202599747U CN 202599747 U CN202599747 U CN 202599747U CN 2012202693364 U CN2012202693364 U CN 2012202693364U CN 201220269336 U CN201220269336 U CN 201220269336U CN 202599747 U CN202599747 U CN 202599747U
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- CN
- China
- Prior art keywords
- core sample
- concrete
- concrete core
- barrel body
- cylindrical shell
- 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.)
- Expired - Fee Related
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- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a guide support for a concrete core sample extractor. The guide support is characterized by being composed of a barrel body (1d) and an end cover (1b) connected to one end of the barrel body, wherein a support location ring (1c) is arranged on the outer cylindrical surface of the barrel body (1d), a guide sleeve (1a) is arranged at the centre of the end cover (1b), a guide hole (1h) is formed in the guide sleeve, and a section of conical hole (1f) is formed in an inner cavity of the barrel body (1d). The guide support disclosed by the utility model is built in an annular groove (6) which is drilled by a special drilling machine, thereby ensuring that the axial force of the concrete core sample extractor in drilling traction is applied along the axial direction of a core sample, and solving the problem of difficult application of the axial force during a process of testing the axial tensile strength of concrete on a structure entity.
Description
Technical field
The utility model relates to the device of on-the-spot test concrete tensile strength, and particularly a kind of concrete core sample is extracted the appearance guiding trestle.
Background technology
The test of structural concrete compressive strength is very ripe at present both at home and abroad; A lot of corresponding technical standard have also been worked out; But concrete axial tensile strength for new construction design, old building thing transform with reinforce often even more important, as the checking computations structural concrete whether ftracture, fracture width etc.
Still there are not the directly instrument and the method for test concrete tensile strength on structural solid at present both at home and abroad; Have in the standard a kind of in testing laboratory the production standard test specimen be placed on the universal testing machine; Do the method for axle center tensile test; The shortcoming of this method is that to make test specimen inconvenient, and test value can not intuitively reflect the situation of engineering entity, with structural solid certain difference is arranged; Especially for existing building and bond between fresh and hardened concretes situation, because of can not get its tensile strength by the production standard test specimen.Have a kind of method can the concrete split tensile strength of test structure in the standard, be converted into concrete axial tensile strength then, but conversion itself is exactly data by rule of thumb, accuracy be difficult to guarantee.The researchist is devoted to utilize the brill daraf(reciprocal of farad) to carry out the test of on-the-spot axial tensile strength always, but how to guarantee axially to apply does not also solve all the time.
The utility model content
The purpose of the utility model is exactly to be difficult to guarantee the shortcoming axially executed when solving the test of existing axial tensile strength, and a kind of concrete core sample that provides is extracted the appearance guiding trestle, is used for solving the problem that applies of boring the daraf(reciprocal of farad) axial force.
The utility model has been taked following technical scheme:
A kind of concrete core sample is extracted the appearance guiding trestle, it is characterized in that it is made up of cylindrical shell and the end cap that is connected in cylindrical shell one end, and the cylindrical shell external cylindrical surface is provided with the support locating ring one, and the end cap center is provided with an orienting sleeve, is provided with pilot hole in the orienting sleeve.
On the basis of technique scheme, following further technical scheme is arranged:
The cylindrical shell internal control is provided with one section bellmouth.
The utlity model has following beneficial effect: when having realized at the scene on the structural solid test concrete axial tensile strength, accurately the applying of axial force, thus guaranteed the accuracy of test data.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is that the utility model and concrete core sample are extracted appearance and be used constitutional diagram.
Embodiment
As shown in Figure 1; A kind of concrete core sample that the utility model provides is extracted the appearance guiding trestle; It is characterized in that it is made up of cylindrical shell 1d and the end cap 1b that is connected in cylindrical shell one end; Cylindrical shell 1d external cylindrical surface is provided with one and supports locating ring 1c, and end cap 1b center is provided with an orienting sleeve 1a, is provided with pilot hole 1h in the orienting sleeve.Cylindrical shell 1d internal control is provided with one section bellmouth 1f.
As shown in Figure 2 is the utility model and concrete core sample extracted appearance and is used state,
Use rig on structural concrete, to get out the core 5 of diameter, keep core to link to each other with structure parent concrete as 80mm～110mm, degree of depth 160mm～220mm.Form circumferential groove 6 between core and structure parent; Guarantee that circumferential groove 6 degree of depth are greater than guiding trestle cylindrical shell 1a length; Cylindrical shell 1a outer wall cooperates closely with circumferential groove, and can guarantee that cylindrical shell 1a can insert in the circumferential groove, and cylindrical shell 1a endoporus is provided with bellmouth 1f; Do not contact with the core outer wall, the gap of 2mm～3mm is arranged approximately.
Guiding trestle is put into circumferential groove 6, owing to cylindrical shell 1a outer wall cooperates closely with circumferential groove, so the axis coinciding of the axle center of orienting sleeve 1a and core.And support locating ring 1c with vertical to cover 1a, so no matter the structural concrete surface whether with the core axis normal, can both guarantee to support end face and core axis normal.
Connect universal drawing bar 2 on the reaction frame 3, extract pulling out of appearance and 4 be connected with the pulling block of core 5 ends, universal drawing bar 2 with pull out 4 and be connected and passed certain thickness pull bar pilot hole 1h, the axial property of the axial force that has further guaranteed to apply.
Claims (2)
1. a concrete core sample is extracted the appearance guiding trestle; It is characterized in that: it is made up of cylindrical shell (1d) and the end cap (1b) that is connected in cylindrical shell one end; Cylindrical shell (1d) external cylindrical surface is provided with one and supports locating ring (1c); End cap (1b) center is provided with an orienting sleeve (1a), is provided with pilot hole (1h) in the orienting sleeve.
2. a kind of concrete core sample according to claim 1 is extracted the appearance guiding trestle, it is characterized in that: cylindrical shell (1d) internal control is provided with one section bellmouth (1f).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202693364U CN202599747U (en) | 2012-06-08 | 2012-06-08 | Guide support for concrete core sample extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202693364U CN202599747U (en) | 2012-06-08 | 2012-06-08 | Guide support for concrete core sample extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202599747U true CN202599747U (en) | 2012-12-12 |
Family
ID=47317276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202693364U Expired - Fee Related CN202599747U (en) | 2012-06-08 | 2012-06-08 | Guide support for concrete core sample extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202599747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706733A (en) * | 2012-06-08 | 2012-10-03 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Guide bracket of concrete core sample extraction instrument |
-
2012
- 2012-06-08 CN CN2012202693364U patent/CN202599747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706733A (en) * | 2012-06-08 | 2012-10-03 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Guide bracket of concrete core sample extraction instrument |
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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 |
Granted publication date: 20121212 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |