CN203811466U - Locking device for tensile test on concrete core sample - Google Patents
Locking device for tensile test on concrete core sample Download PDFInfo
- Publication number
- CN203811466U CN203811466U CN201420111122.3U CN201420111122U CN203811466U CN 203811466 U CN203811466 U CN 203811466U CN 201420111122 U CN201420111122 U CN 201420111122U CN 203811466 U CN203811466 U CN 203811466U
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- CN
- China
- Prior art keywords
- locking device
- core sample
- tensile test
- sleeve
- concrete core
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a locking device for a tensile test on a concrete core sample. The locking device is characterized by comprising a support seat (3), wherein a locking piece (1) is arranged in the support seat, and comprises a stud (1a); a tapered locking sleeve (1b) is arranged at one end of the stud, and at least two threaded holes (1c) are formed in the other end of the stud; a casing (2) is connected to the locking sleeve (1b) in a sleeving way; a locking nut (4) is connected to the stud in a matching way, and is correspondingly matched with the locking sleeve (1b); a tension meter (10) is further arranged on the support seat (3), and is connected with one threaded hole (1c) through a threaded rod (7) in a matching way. The locking device has the advantages that the device is simple and light in structure, convenient to mount, use and carry, easy to overhaul and low in cost, can be used for testing and evaluating the adhesion condition of new and old concrete structures, and can also be used for easily taking out the concrete core sample which cannot be easily taken out after drill feeding.
Description
Technical field
The utility model relates to a kind of mechanical locking device, particularly a kind of concrete core sample tensile test locking device.
Background technology
Last century six the seventies, China is newly-built many hydraulic engineerings, construction work, these engineerings are through semicentennial operation, there is the defect that concrete aging comes off, steel bar corrosion exposes in a lot of building surfaces.In the time of this class building strengthening, a lot of schemes have all selected aging concrete plate to reject the also method of outsourcing novel concrete, and obviously, after reinforcing, the bonding strength of New-old concrete is very important.The method adopting is at present mainly after rig enters to bore, and will stay structural core end and be stained with and bear steel plate, the cohesive strength that steel plate is applied pulling force and tests New-old concrete by tensile test instrument.
The drawback of the method maximum of stick steel plate is that the performance of bonded adhesives is difficult to meet the demands; Next test period is long, and bonded adhesives often needs a couple of days could embody its intensity, is unfavorable for carrying out fast of test.Therefore, explore a kind of novel test technology, to promoting the development of Mechanics Performance of Adherence of New intensity detection technology significant, through extensively retrieval, not yet find comparatively desirable technical scheme.
Utility model content
The shortcomings such as the purpose of this utility model is fixing not firm to core in order to solve in present stage concrete core sample tensile test, and the test period is long, and a kind of concrete core sample tensile test locking device proposing.
To achieve these goals, the utility model has adopted following technical scheme:
A kind of concrete core sample tensile test locking device, it is characterized in that comprising: supporting seat, in supporting seat, be provided with locking member, locking member comprises double-screw bolt, and the lock sleeve, the other end that are provided with taper in one end of double-screw bolt are provided with at least two screws, at a sleeve pipe of lock sleeve socket, at the double-screw bolt set nut that is connected, set nut and lock sleeve corresponding matching are also provided with tautness meter on supporting seat, and tautness meter is connected by screw rod and one of them screw.
On the basis of technique scheme, can there is following further technical scheme:
Described supporting seat comprises sleeve, is equipped with flange at the two ends of sleeve, and described tautness meter connects on superincumbent flange.
The inside surface of described lock sleeve is provided with clamping screw thread, and when assembling, a securing member is connected respectively in wherein two screws of double-screw bolt end face.
The lateral surface of described set nut is provided with at least one counterbore.
This device is socketed in locking member on concrete core, increases gradually pulling force by tautness meter, and records concrete core sample and break the power value of the concentrated force in moment, reaches the object of determining Mechanics Performance of Adherence of New intensity.Conventionally power value when break at Mechanics Performance of Adherence of New position is 2 ~ 6kN, is the precision that ensures experimental data, and the maximum range of tensile test instrument must not exceed 10kN, and reading can automatically record peak value time.
The utility model has the advantage of: this apparatus structure is simple, light and handy, easy to install, easily maintenance, cost is low, be easy to carry, not only can be used for the bonding situation of New And Old Concrete Structures to test and evaluate, but also can utilize this device, the concrete core sample that is difficult for taking out after entering to bore is taken out easily.
Brief description of the drawings
Fig. 1 is basic structure schematic diagram of the present utility model;
Fig. 2 is the wiring layout of Fig. 1;
Fig. 3 is the structural representation of locking member.
Embodiment
As depicted in figs. 1 and 2, a kind of concrete core sample tensile test locking device that the utility model provides, is characterized in that comprising:
Supporting seat 3, supporting seat 3 comprises sleeve 3a, is equipped with flange 3b at the two ends of sleeve, described tautness meter 10 connects on superincumbent flange 3b, sleeve is placed on concrete 6, and the core 6a corresponding matching of sleeve 3a and concrete 6 is provided with locking member 1 in sleeve 3a.
Shown in Fig. 3, described locking member 1 comprises double-screw bolt 1a, the lock sleeve 1b, the other end that are provided with taper in one end of double-screw bolt are provided with three screw 1c, described lock sleeve is socketed on core 6a, the inside surface of lock sleeve is provided with clamping screw thread 1c, this design can increase the friction force of lock sleeve and core, makes locking member 1 in the time clamping core, can not produce slip.Uniform four elongated open slot 1d on the jacket wall of lock sleeve 1b, the two ends of open slot are separately positioned on the two ends of lock sleeve, also be respectively equipped with a through hole 1e in the inner of each open slot, the diameter of through hole is greater than the width of open slot, and each open slot all runs through jacket wall.Three described screw 1c are arranged on the same diameter of double-screw bolt end face, and middle screw is arranged on the center of its place end face.
Difference slip joint casing 2 and set nut 4 on locking member 1, described sleeve pipe 2 is a ladder pipe, the pipe box that its front end is larger is connected on lock sleeve 1b, the less pipe box in upper end is connected on double-screw bolt 1a, uniform four counterbore 4a on the lateral surface of described set nut 4, set nut 4 is threaded connection with double-screw bolt 1a, and set nut coordinates with the end contact of lock sleeve, in the time that set nut is rotated down, sleeve pipe compresses lock sleeve, thereby makes lock sleeve clamp core 6a.
On the flange 3b of supporting seat 3 upper surfaces, place a tautness meter 10, tautness meter is connected with the screw 1c in the middle of locking member 1 end face by screw rod 7.
It when assembling, is the clamping force that increases locking member 1 and core 6a, a securing member 5 can be connected respectively in the screw 1c of locking member 1 end face both sides, securing member can be selected bolt, between two securing members, place an iron staff 8, in one of them four counterbore 4a of set nut 4, insert rod iron 9, by rod iron 9 rotational lock nuts 4, sleeve pipe 2 is compressed to lock sleeve 1b, fix rear iron staff 8 and the rod iron 9 of taking off respectively, tautness meter 10 is installed.
Claims (4)
1. a concrete core sample tensile test locking device, it is characterized in that comprising: supporting seat (3), in supporting seat, be provided with locking member (1), locking member comprises double-screw bolt (1a), be provided with the lock sleeve (1b) of taper in one end of double-screw bolt, the other end is provided with at least two screws (1c), at lock sleeve (1b) sleeve pipe of socket (2), at double-screw bolt (1a) set nut (4) that is connected, set nut and lock sleeve (1b) corresponding matching, on supporting seat (3), be also provided with tautness meter (10), tautness meter is connected by screw rod (7) and one of them screw (1c).
2. a kind of concrete core sample tensile test locking device according to claim 1, it is characterized in that: described supporting seat (3) comprises sleeve (3a), be equipped with flange (3b) at the two ends of sleeve, described tautness meter (10) connects on superincumbent flange (3b).
3. a kind of concrete core sample tensile test locking device according to claim 1, it is characterized in that: the inside surface of described lock sleeve (1b) is provided with clamping screw thread (1c), when assembling, a securing member (5) is connected respectively in wherein two screws (1c) of double-screw bolt (1a) end face.
4. a kind of concrete core sample tensile test locking device according to claim 1, is characterized in that: the lateral surface of described set nut (4) is provided with at least one counterbore (4a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111122.3U CN203811466U (en) | 2014-03-12 | 2014-03-12 | Locking device for tensile test on concrete core sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111122.3U CN203811466U (en) | 2014-03-12 | 2014-03-12 | Locking device for tensile test on concrete core sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811466U true CN203811466U (en) | 2014-09-03 |
Family
ID=51450202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420111122.3U Expired - Fee Related CN203811466U (en) | 2014-03-12 | 2014-03-12 | Locking device for tensile test on concrete core sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868796A (en) * | 2014-03-12 | 2014-06-18 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test of concrete core sample |
| CN106289977A (en) * | 2016-08-15 | 2017-01-04 | 南宁学院 | A kind of peg Analysis of Concrete Tensile assay device and test method |
-
2014
- 2014-03-12 CN CN201420111122.3U patent/CN203811466U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868796A (en) * | 2014-03-12 | 2014-06-18 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test of concrete core sample |
| CN103868796B (en) * | 2014-03-12 | 2016-06-22 | 安徽省（水利部淮河水利委员会）水利科学研究院 | A kind of concrete core sample tensile test locking device |
| CN106289977A (en) * | 2016-08-15 | 2017-01-04 | 南宁学院 | A kind of peg Analysis of Concrete Tensile assay device and test method |
| CN106289977B (en) * | 2016-08-15 | 2023-02-28 | 南宁学院 | Bolt concrete tensile test device and test method |
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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: 20140903 Termination date: 20180312 |