CN204855250U - Design of reinforcing bar tensile test machine draw -in groove - Google Patents
Design of reinforcing bar tensile test machine draw -in groove Download PDFInfo
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- CN204855250U CN204855250U CN201520509629.9U CN201520509629U CN204855250U CN 204855250 U CN204855250 U CN 204855250U CN 201520509629 U CN201520509629 U CN 201520509629U CN 204855250 U CN204855250 U CN 204855250U
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- reinforcing bar
- groove
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- bar
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Abstract
The utility model relates to a design of reinforcing bar tensile test machine draw -in groove, steel bar anchoring including former tensile equipment distinguishes, goes up pull end, lower pull end, reinforcing bar sample, still including setting up backing plate, rivet, fixed chuck spare, the reinforcing bar chuck of distinguishing at steel bar anchoring. The utility model discloses on the basis of original reinforcing bar tensile test machine reinforcing bar chuck, the realization comes tensile reinforcing bar to the design that the reinforcing bar chuck increases the draw -in groove, but the wide application is in reinforcing bar tensile test.
Description
Technical field
The utility model relates to a kind of Material Testing Machine steel bar stretching test design method.
Background technology
Reinforcing bar and concrete are the main materials forming building structure.Have good cohesive force between reinforcing bar and concrete, reinforcing bar and concrete temperature line expansion coefficient similar, more importantly reinforcing bar is wrapped in concrete the corrosion exempting from external environment, and concrete plays a very good protection to reinforcing bar.Reinforcing bar has good tensile property, and concrete has good compressive property, plays respective advantage co-operation therebetween, is the feature of reinforced concrete structure.So reinforcing bar and concrete energy co-operation, bear extraneous generalized force.In building structural materials, reinforcing bar is an important ingredient, and the quality of reinforcement property directly affects being suitable for and safety of structure.Therefore, reinforcing bar all needed to carry out necessary Performance Detection before for engineering construction.Wherein, steel bar mechanics performance is measured by the tension test of reinforcing bar.The tensile strength of reinforcing bar, length growth rate and yield strength are the most basic three mechanical performance indexs of reinforcing bar, and these three indexs are all obtained by steel bar stretching test.Therefore, the accuracy of steel bar stretching detection is most important.The fixture face of steel bar stretching testing machine is all generally plane with ribbing, and only have a tangent line with the contact of circular reinforcing bar, the reinforcing bar less for the diameter that stretches can also ensure accuracy, once bar diameter is larger, during holder reinforcing bar, easy slippage, causes test failure.There is enough friction force between reinforcing bar and stretcher when the design of stretching draw-in groove ensure that stretching, ensure that the accuracy of test.
Utility model content
The utility model binding reinforcement mechanics properties testing is tested, and proposes the design of steel bar stretching draw-in groove.Time mainly in order to solve the steel bar stretching of different-diameter, increase the technical matters of the friction force between reinforcing bar and draw-in groove.
The technical solution of the utility model is as follows:
The design of a kind of steel bar stretching testing machine draw-in groove, comprise the Bar Anchorage district of former stretcher, upper stretching end, lower stretching end, reinforcing bar sample, also comprise the backing plate, rivet, geometrical clamp head, the reinforcing bar chuck that are arranged on Bar Anchorage district, wherein, reinforcing bar fixedly carries out tension test by anchorage zone, be divided into stretch end and lower stretching end, described anchorage zone comprises backing plate, rivet, geometrical clamp head, reinforcing bar chuck totally four parts, and described upper stretching end and lower stretching end are all fixed on column; Geometrical clamp head is connected to upper stretching end and lower stretching end by backing plate and rivet; Be fixed together by bayonet socket between reinforcing bar chuck and geometrical clamp head, described reinforcing bar chuck projection should slightly toward outer amplification, the groove of described geometrical clamp head is slightly toward interior amplification, stuck fixing to ensure between reinforcing bar chuck and geometrical clamp head, the described vertical centre position of reinforcing bar chuck should arrange draw-in groove, and described reinforcing bar chuck draw-in groove place should arrange cross rib line.
The diameter of described reinforcing bar sample is not less than 25mm, and length is not less than (250mm+10d), and wherein, d is the diameter of reinforcing bar, and linear measure longimetry precision is 0.015mm.
The freedom length of described reinforcing bar sample must not be less than 400mm (25mm < d≤32mm) or 500mm (d > 32mm).
Described rivet should not be less than 2 on each backing plate.
Described draw-in groove sharp-crested place should not be less than 10mm apart from the outer peripheral vertical range of reinforcing bar chuck.
Beneficial effect:
When the most significant advantage of the utility model is steel bar stretching, adopts draw-in groove design, for the reinforcing bar that diameter is larger, increase the friction force between reinforcing bar chuck and reinforcing bar, ensure that the accuracy that steel bar stretching is tested and success ratio.And the utility model adopts the design of triangle draw-in groove, and be applicable to the tension test of various different Large-size rebar, the method cost is low, and applicability is strong, and accuracy rate is high, does not affect the tension test of low diameter reinforcing bar.If this technology is applied, significant effect will be had in steel bar stretching test.
Accompanying drawing explanation
Fig. 1 is steel bar stretching testing machine schematic diagram;
Fig. 2 is end schematic diagram that testing machine stretches;
Fig. 3 is the end draw-in groove floor map that stretches;
Fig. 4 is the end draw-in groove rib line schematic diagram that stretches.
In figure, 1: Bar Anchorage district; 2: above stretch end; 3: under to stretch end; 4: reinforcing bar sample; 5: backing plate; 6: rivet; 7: geometrical clamp head; 8: reinforcing bar chuck; 9: draw-in groove; 10: rib line; 11: column.
Embodiment
The design of a kind of steel bar stretching testing machine draw-in groove, see shown in Fig. 1 to 4, comprise the Bar Anchorage district 1 of former stretcher, upper stretching end 2, lower stretching end 3, reinforcing bar sample 4, also comprise the backing plate 5 being arranged on Bar Anchorage district 1, rivet 6, geometrical clamp head 7, reinforcing bar chuck 8, wherein, reinforcing bar sample 4 fixedly carries out tension test by Bar Anchorage district 1, be divided into stretching end 2 and lower stretching end 3, described Bar Anchorage district 1 comprises backing plate 5, rivet 6, geometrical clamp head 7, reinforcing bar chuck 8 is totally four parts, described upper stretching end 2 and lower stretching end 3 are all fixed on column 11, geometrical clamp head 7 is connected to upper stretching end 2 and lower stretching end 3 by backing plate 5 and rivet 6, be fixed together by bayonet socket between reinforcing bar chuck 8 and geometrical clamp head 7, described reinforcing bar chuck 8 projection should slightly toward outer amplification, the groove of described geometrical clamp head 7 is slightly toward interior amplification, stuck fixing to ensure between reinforcing bar chuck 8 and geometrical clamp head 7, the vertical centre position of described reinforcing bar chuck 8 should arrange draw-in groove 9, and described reinforcing bar chuck draw-in groove 9 place should arrange cross rib line 10.The diameter of described reinforcing bar sample 4 is not less than 25mm, and length is not less than (250mm+10d), and wherein, d is the diameter of reinforcing bar, and linear measure longimetry precision is 0.015mm.Described rivet 6 should not be less than 2 on each backing plate 5.Described draw-in groove 9 sharp-crested place should not be less than 10mm apart from the outer peripheral vertical range of reinforcing bar chuck 8.
Be more than a kind of exemplary embodiment of the present utility model, concrete enforcement of the present utility model is not limited thereto.
Claims (4)
1. a steel bar stretching testing machine draw-in groove design, comprise the Bar Anchorage district (1) of former stretcher, upper stretching end (2), lower stretching end (3), reinforcing bar sample (4), it is characterized in that: also comprise the backing plate (5) being arranged on Bar Anchorage district (1), rivet (6), geometrical clamp head (7), reinforcing bar chuck (8), wherein, reinforcing bar sample (4) fixedly carries out tension test by Bar Anchorage district (1), be divided into stretch end (2) and lower stretching end (3), described Bar Anchorage district (1) comprises backing plate (5), rivet (6), geometrical clamp head (7), reinforcing bar chuck (8) totally four parts, described upper stretching end (2) and lower stretching end (3) are all fixed on column (11), geometrical clamp head (7) is connected to upper stretching end (2) and lower stretching end (3) by backing plate (5) and rivet (6), be fixed together by bayonet socket between reinforcing bar chuck (8) and geometrical clamp head (7), described reinforcing bar chuck (8) projection should slightly toward outer amplification, the groove of described geometrical clamp head (7) is slightly toward interior amplification, stuck fixing to ensure between reinforcing bar chuck (8) and geometrical clamp head (7), the vertical centre position of described reinforcing bar chuck (8) should arrange draw-in groove (9), and described reinforcing bar chuck draw-in groove (9) place should arrange cross rib line (10).
2. steel bar stretching testing machine draw-in groove design according to claim 1, it is characterized in that: the diameter of described reinforcing bar sample (4) is not less than 25mm, length is not less than (250mm+10d), wherein, d is the diameter of reinforcing bar, and linear measure longimetry precision is 0.015mm.
3. steel bar stretching testing machine draw-in groove design according to claim 1, is characterized in that: described rivet (6) should not be less than 2 on each backing plate (5).
4. steel bar stretching testing machine draw-in groove design according to claim 1, is characterized in that: described draw-in groove (9) sharp-crested place should not be less than 10mm apart from reinforcing bar chuck (8) outer peripheral vertical range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509629.9U CN204855250U (en) | 2015-07-14 | 2015-07-14 | Design of reinforcing bar tensile test machine draw -in groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509629.9U CN204855250U (en) | 2015-07-14 | 2015-07-14 | Design of reinforcing bar tensile test machine draw -in groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855250U true CN204855250U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520509629.9U Expired - Fee Related CN204855250U (en) | 2015-07-14 | 2015-07-14 | Design of reinforcing bar tensile test machine draw -in groove |
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| CN (1) | CN204855250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004606A (en) * | 2015-07-14 | 2015-10-28 | 中震(北京)工程检测有限公司 | Steel bar tensile test machine clamping slot design and test method |
-
2015
- 2015-07-14 CN CN201520509629.9U patent/CN204855250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004606A (en) * | 2015-07-14 | 2015-10-28 | 中震(北京)工程检测有限公司 | Steel bar tensile test machine clamping slot design and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100043 Shijingshan District, Yang Yang Street, No. 69, No. 1, building an international Park, Fu International Patentee after: ZHONGZHEN (BEIJING) ENGINEERING DETECTION CO.,LTD. Address before: 100043 Shijingshan, Yang Yang Street, No. 69, No. 1, building an international Park, Fu International Patentee before: ZHONGZHEN (BEIJING) ENGINEERING DETECTION Co.,Ltd. |
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| 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: 20151209 |