CN202770703U - Self-adjusting clamp for concrete tensile tests - Google Patents
Self-adjusting clamp for concrete tensile tests Download PDFInfo
- Publication number
- CN202770703U CN202770703U CN 201220465730 CN201220465730U CN202770703U CN 202770703 U CN202770703 U CN 202770703U CN 201220465730 CN201220465730 CN 201220465730 CN 201220465730 U CN201220465730 U CN 201220465730U CN 202770703 U CN202770703 U CN 202770703U
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- China
- Prior art keywords
- clamping
- movable block
- self
- connector
- rod member
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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 discloses a self-adjusting clamp for concrete tensile tests. The self-adjusting clamp comprises a clamping base and a movable chuck, the clamping base is mainly composed of a clamping rod piece, a movable block and a connection head, a rod piece is arranged on the upper portion of the clamping rod piece, a base with a groove opened is arranged on the lower portion, and the clamping rod piece is connected with the connection head through the movable block and a bolt. According to the self-adjusting clamp, the clamping base is connected with an embedded rod through the movable chuck, the clamping base is similar to a universal joint structure after assembly and can be adjusted in any direction, an stressed axis and a test piece axis are guaranteed to be consistent during the tensile tests, the test piece is prevented from being stressed eccentrically, and the reliability of test results is guaranteed. The movable chuck can be detached and prepared according to the diameter of the embedded rod, the movable chuck can be changed singly after internal threads are damaged for long time usage, and the whole clamp is not needed to be changed, so that the clamp is flexible to use and low in cost.
Description
Technical field
The utility model relates to a kind of self-regulating concrete tension test anchor clamps that are applicable to adopt the concrete limit stretching test piece that buries bar.
Background technology
When concrete limit stretching is tested, often adopt clipping stretching clamp, because existing jig Design is unreasonable, in process of the test, often can cause the test specimen eccentric force, cause the test findings distortion.
Summary of the invention
For the deficiencies in the prior art, the utility model purpose is to provide a kind of and buries the anchor clamps that bar carries out the concrete limit stretching test for employing, these anchor clamps can be avoided the test specimen eccentric force, guarantee stressed axis on the test specimen central axis, warranty test result's reliability.
The purpose of this utility model is achieved in that a kind of self-regulating concrete tension test anchor clamps, anchor clamps comprise clamping pedestal and active chuck, the clamping pedestal mainly is comprised of clamping rod member, movable block and connector, clamping rod member top is a rod member, the bottom is out reeded base, and the clamping rod member is connected with connector with bolt by movable block.
Described movable block is a square bloom, size and clamping rod member lower recess coupling, movable block and groove leave the gap on every side, the movable block center have two orthogonal to wearing circular hole, link to each other with connector with the clamping rod member with circular chock by bolt.
Connector top is provided with a connecting groove, is used for being connected with movable block, and lower central has one hollow circular hole, and circular hole interior surface is covered with coarse thread, can be connected with active chuck.
Active chuck is the circular goods of a convex, and first half outshot is covered with coarse thread, and the hollow circular hole internal thread of connector the latter half of diameter and screw thread specification and clamping pedestal is complementary; The latter half smooth outer surface, diameter is identical with the connector external diameter of clamping pedestal, the center is hollow, size with bury bar thickness coupling, the inside surface car has and the screw thread that buries the rod outer surface same specification.
The self-regulating concrete tension test anchor clamps that the utility model provides, by active chuck with the clamping pedestal with bury bar and link to each other, because similar universal joint structure after the assembling of clamping pedestal, the equal capable of regulating of all directions, axis stressed when having guaranteed tension test is consistent with the test specimen axis, avoid the test specimen eccentric force, guaranteed the reliability of test findings.Active chuck can be dismantled, can be according to burying the preparation of shank diameter size, and long-time the use causes can changing separately after the internal thread damage, and do not need to change whole anchor clamps, and it is more flexible that these anchor clamps are used, and cost is cheaper.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the present utility model after assembling.
Fig. 2, the 3rd, clamping rod member structural representation of the present utility model.
Fig. 4, the 5th, the structural representation of the utility model connector.
Fig. 6 is the structural representation of the utility model movable block.
Fig. 7 is the utility model active chuck structural representation.
Embodiment
Structure of the present utility model is shown in Fig. 1-7, and a kind of self-regulating concrete tension test anchor clamps are comprised of clamping pedestal 1 and active chuck 2.The clamping pedestal is steel part, formed by clamping rod member 1, movable block 3, connector 4, clamping rod member 1 top is that a diameter is the rod member (also can be processed into corresponding connector according to used testing machine joint dimension) of φ 25mm, long 100mm, the bottom is the circular steel goods of diameter phi 60mm～65mm, it is one wide and deeply be the groove 5 of 30mm ~ 35mm that the centre is dug, and is connected with connector 4 with bolt by movable block 3; Movable block 3 is a square bloom, size and clamping rod member 1 lower recess 5 size couplings, movable block 3 and the gap of leaving 1mm ~ 2mm around the groove 5, movable block 3 centers have two orthogonal diameters be 16mm to wearing circular hole 6, by bolt 8 be connected chock and clamping rod member 1 be connected 4 and link to each other; Connector 4 is the circular steel goods of a diameter phi 60mm～65mm, it is one wide and deeply be the connector groove 7 of 30mm ~ 35mm that top is dug, be used for being connected with movable block 3, it is the hollow circular hole of 30mm ~ 35mm that there is a diameter at the latter half center, circular hole interior surface is covered with coarse thread, can be connected with active chuck 2.The clamping pedestal is assembled into an integral body before use.Active chuck 2 is convex circular steel goods, first half outshot is covered with coarse thread, diameter and screw thread specification and the hollow circular hole internal thread of clamping pedestal connector the latter half are complementary, the latter half smooth outer surface, diameter is identical with connector 4 external diameters of clamping pedestal, the center is hollow, size with bury bar thickness coupling, the inside surface car becomes and the screw thread that buries the rod outer surface same specification.Active chuck 2 can be prepared separately according to burying the bar thickness, is replaceable chuck.
When carrying out the concrete limit stretching test, at first active chuck 2 there is the connector 4 of screw thread one end and clamping pedestal to tighten, bar is buried at two ends to be cleaned out, burying bar by active chuck 2 and two ends again links to each other and tightens, the clamping rod member 1 of two ends clamping pedestal is put into grip of testing machine clamp, can begin to test.This device need respectively fill a stretching clamp at the two ends of a concrete limit stretching test piece.Test specimen after destroying is taken off test specimen, takes off anchor clamps, cleans out, and is coated with oil guard, for reusing.
Claims (4)
1. self-regulating concrete tension test anchor clamps, it is characterized in that: anchor clamps comprise clamping pedestal and active chuck (2), the clamping pedestal mainly is comprised of clamping rod member (1), movable block (3) and connector (4), clamping rod member (1) top is a rod member, the bottom is one to have the base of groove (5), and clamping rod member (1) is connected with connector (4) with bolt by movable block (3).
2. self-regulating concrete tension test anchor clamps according to claim 1, it is characterized in that: described movable block (3) is a square bloom, size and clamping rod member lower recess (5) coupling, movable block (3) leaves the gap on every side with groove (5), movable block (3) center have two orthogonal to wearing circular hole (6), link to each other with connector (4) with clamping rod member (1) with circular chock by bolt (8).
3. self-regulating concrete tension test anchor clamps according to claim 1 and 2, it is characterized in that: connector (4) top is provided with a connecting groove (7), be used for being connected with movable block (3), lower central has a hollow circular hole, circular hole interior surface is covered with coarse thread, can be connected with active chuck (2).
4. self-regulating concrete tension test anchor clamps according to claim 3, it is characterized in that: active chuck (2) is the circular goods of a convex, first half outshot is covered with coarse thread, and the hollow circular hole internal thread of connector (4) the latter half of diameter and screw thread specification and clamping pedestal is complementary; The latter half smooth outer surface, diameter is identical with connector (4) external diameter of clamping pedestal, the center is hollow, size with bury bar thickness coupling, the inside surface car has and the screw thread that buries the rod outer surface same specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465730 CN202770703U (en) | 2012-09-13 | 2012-09-13 | Self-adjusting clamp for concrete tensile tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465730 CN202770703U (en) | 2012-09-13 | 2012-09-13 | Self-adjusting clamp for concrete tensile tests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770703U true CN202770703U (en) | 2013-03-06 |
Family
ID=47777267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220465730 Expired - Fee Related CN202770703U (en) | 2012-09-13 | 2012-09-13 | Self-adjusting clamp for concrete tensile tests |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782621A (en) * | 2017-10-16 | 2018-03-09 | 长安大学 | Concrete material single shaft tension constitutive relation experimental rig |
| CN108181177A (en) * | 2017-10-30 | 2018-06-19 | 武汉船用机械有限责任公司 | A kind of device for testing tensile force and test method |
-
2012
- 2012-09-13 CN CN 201220465730 patent/CN202770703U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782621A (en) * | 2017-10-16 | 2018-03-09 | 长安大学 | Concrete material single shaft tension constitutive relation experimental rig |
| CN107782621B (en) * | 2017-10-16 | 2020-10-09 | 长安大学 | Concrete material uniaxial tension constitutive relation test device |
| CN108181177A (en) * | 2017-10-30 | 2018-06-19 | 武汉船用机械有限责任公司 | A kind of device for testing tensile force and test method |
| CN108181177B (en) * | 2017-10-30 | 2021-07-27 | 武汉船用机械有限责任公司 | Tension testing device and 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 |
Granted publication date: 20130306 Termination date: 20200913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |