CN203798715U - Auxiliary device for pull rod concrete test block pull-out test - Google Patents
Auxiliary device for pull rod concrete test block pull-out test Download PDFInfo
- Publication number
- CN203798715U CN203798715U CN201420243024.5U CN201420243024U CN203798715U CN 203798715 U CN203798715 U CN 203798715U CN 201420243024 U CN201420243024 U CN 201420243024U CN 203798715 U CN203798715 U CN 203798715U
- Authority
- CN
- China
- Prior art keywords
- steel plate
- pull
- lower steel
- upper steel
- circular hole
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- 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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Abstract
The utility model discloses an auxiliary device for a pull rod concrete test block pull-out test. The auxiliary device comprises an upper steel plate (1), a lower steel plate (3), a pull rod (8) and four column bodies. The upper steel plate (1) and the lower steel plate (3) are both square plates; the four column bodies are vertically fixed between the upper steel plate (1) and the lower steel plate (3); the pull rod (8) which is perpendicular to the lower steel plate (3) and is used for being connected with a tester is fixed at the bottom of the lower steel plate (3); a circular hole (7) for a pull-out reinforcing steel bar of the test piece to penetrate through is formed in the center of the upper steel plate (1); the upper steel plate (1) is further provided with a groove (6) for being communicated with the circular hole (7) and the exterior of the upper steel plate (1); the width of the groove (6) is smaller than the diameter of the circular hole (7). By means of the auxiliary device for the pull rod concrete test block pull-out test, a support can be provided for a reinforced concrete test block, and the pull-out test is easily implemented.
Description
Technical field
The utility model relates to a kind of servicing unit for pull bar concrete test block pull-out test.
Background technology
The process of research reinforcing bar and concrete binding stress, is generally first drawing test specimen to be carried out to experimental test, then obtains reinforcing bar and concrete bond stress between the two and the relation of slippage according to test figure.
Conventionally in the time of reinforced concrete test specimen pull-out test, all adopt universal tester, but general universal tester all cannot be fixed drawing test specimen; And stationary installation cannot meet the reinforced concrete test specimen of various sizes.
Therefore, be necessary to design a kind of brand-new servicing unit for pull bar concrete test block pull-out test.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of servicing unit for pull bar concrete test block pull-out test, this servicing unit that is used for pull bar concrete test block pull-out test can provide support for reinforced concrete test block, and contributes to implement drawing experiment.
The technical solution of utility model is as follows:
For a servicing unit for pull bar concrete test block pull-out test, comprise upper steel plate (1), lower steel plate (3), pull bar (8) and 4 cylinders;
Upper steel plate and lower steel plate are square plate; 4 cylinders are vertically fixed between upper steel plate and lower steel plate; The bottom of lower steel plate is fixed with one perpendicular to lower steel plate and the pull bar (8) for being connected with testing machine; The center of upper steel plate is provided with a circular hole (7) for the drawing reinforcing bar through test specimen; Described upper cover plate also has a groove (6) for circular hole described in UNICOM and upper steel plate outside; The width of groove is less than the diameter of described circular hole.
Described groove enters into the passage in circular hole as drawing reinforcing bar from outside, because test specimen is rectangular build, upper steel plate and lower steel plate are square plate.
Described cylinder is screw thread round steel; On upper steel plate and lower steel plate, be respectively provided with 4 for the through hole of described screw thread round steel adaptation; Described screw thread round steel is fixed between upper steel plate and lower steel plate by nut.
Lower steel plate and pull bar (being a reinforcing bar in essence) are by being weldingly connected.
Between deformed bar and upper steel plate and lower steel plate, fix with nut and necessary pad.
Beneficial effect:
Servicing unit for pull bar concrete test block pull-out test of the present utility model, owing to having designed the passage that drawing reinforcing bar passes (being groove) and circular hole, thereby make drawing reinforcing bar can avoid position deviation in the time of test, avoid in the time of drawing, occurring bias, stress point is all provided to reinforced concrete test block top in the time of pull-out test; Being set to test specimen the stress point of lower end be provided of pull bar; The cage member being made up of 4 cylinders and upper lower steel plate is for reinforced concrete test block provides fixed position, and the pull-out test that is conducive to reinforced concrete test block carries out smoothly.
In addition, because cylinder has adopted screw thread round steel, the distance of therefore adjusting between upper steel plate and lower steel plate becomes very convenient, can make thus the test specimen of the adaptive differing heights of this device energy, and this is another bright spot place of the present utility model.
In sum, the utility model can effectively avoid test specimen reinforcement location in the time of drawing to depart from, and stress point is all provided up and down in the time of pull-out test to reinforced concrete test block, makes reinforced concrete test block obtain good fixing, and the test specimen of the adaptive different size of energy, can provide very big convenience for pull-out test.
Brief description of the drawings
Fig. 1 is the structural representation (front view) for the servicing unit of pull bar concrete test block pull-out test;
Fig. 2 is the structural representation (upward view) for the servicing unit of pull bar concrete test block pull-out test;
Fig. 3 is the structural representation (rear view) for the servicing unit of pull bar concrete test block pull-out test;
Fig. 4 is the structural representation (vertical view) for the servicing unit of pull bar concrete test block pull-out test.
Label declaration: 1-upper steel plate, 2-thread, 3-lower steel plate, 4-nut, 5-through hole, 6-groove, 7-circular hole, 8-pull bar.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
As Fig. 1-4, a kind of servicing unit for pull bar concrete test block pull-out test, comprises upper steel plate (1), lower steel plate (3), pull bar (8) and 4 cylinders;
Upper steel plate and lower steel plate are square plate; 4 cylinders are vertically fixed between upper steel plate and lower steel plate; The bottom of lower steel plate is fixed with one perpendicular to lower steel plate and the pull bar 8 for being connected with testing machine; The center of upper steel plate is provided with a circular hole 7 for the drawing reinforcing bar through test specimen; Described upper cover plate also has a groove 6 for circular hole described in UNICOM and upper steel plate outside; The width of groove is less than the diameter of described circular hole.
Described groove enters into the passage in circular hole as drawing reinforcing bar from outside, because test specimen is rectangular build, upper steel plate and lower steel plate are square plate.
Described cylinder is screw thread round steel; On upper steel plate and lower steel plate, be respectively provided with 4 for the through hole of described screw thread round steel adaptation; Described screw thread round steel is fixed between upper steel plate and lower steel plate by nut (mixing if desired pad).
The radius of through hole and circular hole is respectively 6mm and 20mm, and deformed bar length is 270mm, and the thickness of lower steel plate is 20mm, and the thickness of upper steel plate is 28mm, and size is the square that the length of side is 230mm.
The using method explanation of this device:
First pull bar is connected with the fixture of testing machine; Then test specimen is put between upper lower steel plate, the drawing reinforcing bar of test specimen (being positioned at test specimen top) is placed in circular hole by the groove (being passage) of upper steel plate; Drawing reinforcing bar is connected with the chuck that applies vertical direction pulling force of testing machine, test specimen is fixing complete, and then can implement follow-up pull-out test again.
Claims (2)
1. for a servicing unit for pull bar concrete test block pull-out test, it is characterized in that, comprise upper steel plate (1), lower steel plate (3), pull bar (8) and 4 cylinders;
Upper steel plate and lower steel plate are square plate; 4 cylinders are vertically fixed between upper steel plate and lower steel plate; The bottom of lower steel plate is fixed with one perpendicular to lower steel plate and the pull bar (8) for being connected with testing machine; The center of upper steel plate is provided with a circular hole (7) for the drawing reinforcing bar through test specimen; Described upper cover plate also has a groove (6) for circular hole described in UNICOM and upper steel plate outside; The width of groove is less than the diameter of described circular hole.
2. the servicing unit for pull bar concrete test block pull-out test according to claim 1, is characterized in that, described cylinder is screw thread round steel; On upper steel plate and lower steel plate, be respectively provided with 4 for the through hole of described screw thread round steel adaptation; Described screw thread round steel is fixed between upper steel plate and lower steel plate by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243024.5U CN203798715U (en) | 2014-05-12 | 2014-05-12 | Auxiliary device for pull rod concrete test block pull-out test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420243024.5U CN203798715U (en) | 2014-05-12 | 2014-05-12 | Auxiliary device for pull rod concrete test block pull-out test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798715U true CN203798715U (en) | 2014-08-27 |
Family
ID=51380920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420243024.5U Expired - Fee Related CN203798715U (en) | 2014-05-12 | 2014-05-12 | Auxiliary device for pull rod concrete test block pull-out test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
-
2014
- 2014-05-12 CN CN201420243024.5U patent/CN203798715U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
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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: 20140827 Termination date: 20150512 |
|
| EXPY | Termination of patent right or utility model |