CN204461894U - Ribbed Bar anti-fatigue test fixture - Google Patents
Ribbed Bar anti-fatigue test fixture Download PDFInfo
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- CN204461894U CN204461894U CN201520199929.1U CN201520199929U CN204461894U CN 204461894 U CN204461894 U CN 204461894U CN 201520199929 U CN201520199929 U CN 201520199929U CN 204461894 U CN204461894 U CN 204461894U
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Abstract
Ribbed Bar anti-fatigue test fixture, it is primarily of U-shaped holder, the whorl brace rod connected bottom U-shaped holder, the fixed head that upper end, U-shaped holder every side connects, the connecting screw hole that fixed head is arranged and positioning through hole, bolt in connecting screw hole, bolt in positioning through hole, the symmetrical clamp be placed in inside each fixed head, clamp is provided with the connecting through hole corresponding with connecting screw hole, the positioning screw hole that arrange corresponding to positioning through hole at the clamp back side, the semi-circular groove that clamp center is arranged, the rib groove matched with the rib on reinforcing bar arranged in semi-circular groove forms.The utility model breaks in non-clamping region when effectively can ensure reinforcing bar torture test, does not injure again the finned surface on reinforcing bar, and firm grip, the validity of warranty test.
Description
Technical field
The utility model relates to a kind of fixture of object, specifically belongs to Ribbed Bar anti-fatigue test fixture.
Background technology
Reinforced concrete plays extremely important role in civil engineering work, in foundation of national economy Facilities Construction, play immeasurable effect.The house built by reinforced concrete, bridge etc., by outside action of static load, also bear the effect of all kinds of alternate loads such as wind carries, snow load, so the reinforcing bar in xoncrete structure often fatigure failure occurs under the service condition lower than material permissible stress.Therefore, the fatigue property test carrying out reinforcing bar is necessary.
At present, in the Ribbed Bar torture test carried out, when Ribbed Bar is clamped on fatigue tester by the clamper used, horizontal double wedge on the V-type fixture block adopted easily bite reinforcing bar rib surface, form scar, and fixture block occlusion is rear and the rib surface contact of reinforcing bar, contact area is little, easily produce stress during test to concentrate, thus bring out the Crack Extension of the scar on reinforcing rib surface.And once fixture inner rib surfaces scar Crack Extension is to carrying in process of the test, sample will rupture in fixture, instead of the tested section outside fixture, cause test result invalid.
For solving this technical barrier, also carrying out the research work that some are relevant both at home and abroad, and having achieved certain effect.As the document of Chinese patent CN 87205634U, it discloses one " clamping apparatus for reinforcing bar fatigue test ".It is the metal sleeve of interior band tapering, sleeve is inserted in reinforcing bar one end, block the large one end of metal sleeve bore with truncated cone-shaped aluminium block, the strong resin glue mixed up is poured into the little one end of bore, after solidification, metal sleeve is clamped on fatigue tester as the bare terminal end of reinforcing bar and tests.Chinese patent CN 203658129U " the forging device of Ribbed Bar fatigue testing specimen end machining sclerosis ", it proposes by forging Ribbed Bar sample termination, adopt the method for deformation strengthening, improve the intensity of bare terminal end, ensure that bare terminal end intensity is higher than tested end, makes fatigue break occur in tested end.
Above-mentioned two documents, though break in non-clamping region when effectively can ensure reinforcing bar torture test, guarantee the validity of test findings.But the method installing metal sleeve additional need allocate the resin glue with emery, and after also will ensureing resin solidification, intensity is high, otherwise reinforcing bar and resin bonding boundary strength are not, and after loading, reinforcing bar can be extracted from resin, causes test failure.Whether the method forged is tight to sample two bare terminal end deformation extent control overflow, forge rear sample two bare terminal end and cannot ensure on an axis, right alignment during impact test, and to many one manufacturing procedures of reinforcing bar sample, will add the cost of test.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art existence, breaks in non-clamping region, do not injure again the finned surface on reinforcing bar when providing one effectively can ensure reinforcing bar torture test, and the Ribbed Bar anti-fatigue test fixture of firm grip.
Realize the technical measures of above-mentioned purpose:
Ribbed Bar anti-fatigue test fixture, it is: it is primarily of U-shaped holder, the whorl brace rod connected bottom U-shaped holder, the fixed head that upper end, U-shaped holder every side connects, the connecting screw hole that fixed head is arranged and positioning through hole, bolt in connecting screw hole, bolt in positioning through hole, the symmetrical clamp be placed in inside each fixed head, clamp is provided with the connecting through hole corresponding with connecting screw hole, the positioning screw hole that arrange corresponding to positioning through hole at the clamp back side, the semi-circular groove that clamp center is arranged, the rib groove matched with the rib on reinforcing bar arranged in semi-circular groove forms.
It is: be connected with support rim in every side of U-shaped holder or the bottom of each fixed head; Support rim is the height of clamp apart from the height on fixed head top.
It is: the thickness at least one times greatly of the U-shaped holder of Thickness Ratio of fixed head.
It is: positioning through hole and positioning screw hole are all located at the center of place parts and longitudinal arrangement.
Feature of the present utility model: break when effectively can ensure reinforcing bar torture test in non-clamping region, does not injure again the finned surface on reinforcing bar, and firm grip, the validity of warranty test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the connection status structural representation of fixed head and U-shaped holder in Fig. 1;
Fig. 3 is the structural representation of clamp in Fig. 1;
In figure: 1-U-shaped holder, 2-whorl brace rod, 3-fixed head, 4-connecting screw hole, 5-positioning through hole, 6-clamping screw, 7-bolt, 8-clamp, 9-connecting through hole, 10-positioning screw hole, 11-semi-circular groove, 12-rib groove, 13-support rim.
Embodiment
Be described further below in conjunction with accompanying drawing:
Ribbed Bar anti-fatigue test fixture, it is primarily of U-shaped holder 1, the whorl brace rod 2 be threaded connection bottom U-shaped holder, the every upper end, side of U-shaped holder 1 adopts the fixed head 3 of overall processing, the connecting screw hole 4 of processing on fixed head 3 and positioning through hole 5, clamping screw 6 in connecting screw hole 4, bolt 7 in positioning through hole 5, the symmetrical clamp 8 be placed in inside each fixed head 3, clamp 8 is processed with the connecting through hole 9 corresponding with connecting screw hole 4, the positioning screw hole 10 processed corresponding to positioning through hole 5 at clamp 8 back side, the semi-circular groove 11 that clamp 8 center is arranged, in semi-circular groove 11, the rib groove 12 matched with the rib on reinforcing bar of processing forms.The thickness of the U-shaped holder of Thickness Ratio 1 of fixed head 3 is thick is not less than one times.
Overall processing is adopted to have support rim 13 in the bottom of every side of U-shaped holder 1 or each fixed head 3; Support rim 13 is the height of clamp 8 apart from the height on fixed head 3 top.
Positioning through hole 5 and positioning screw hole 10 are all located at the center of place parts and longitudinal arrangement.
Using method:
First be positioned on support rim 13 respectively by two clamps 8, bolt 7 is screwed in positioning screw hole 10 by positioning through hole 5, makes clamp 8 fit tightly at fixed head 3 inside surface; After Ribbed Bar being loaded semi-circular groove 11, in the rib groove 12 that Ribbed Bar face rib is embedded on semi-circular groove 11 inwall; Make two clamp 8 compact siro spinning technology together by bolt 6, and Ribbed Bar is clamped; Then by fine setting clamping screw 6, to ensure that sample is positioned on testing apparatus axis, locking six roots of sensation clamping screw 6, completes sample holder; Be threaded connection bar 2 to be connected with fatigue experimental device; Start after work when at the moment completes to carry out torture test until terminate.
This embodiment is only the best and exemplifies, the restricted enforcement not to technical solutions of the utility model.
Claims (4)
1. Ribbed Bar anti-fatigue test fixture, it is characterized in that: it is primarily of U-shaped holder, the whorl brace rod connected bottom U-shaped holder, the fixed head that upper end, U-shaped holder every side connects, the connecting screw hole that fixed head is arranged and positioning through hole, clamping screw in connecting screw hole, bolt in positioning through hole, the symmetrical clamp be placed in inside each fixed head, clamp is provided with the connecting through hole corresponding with connecting screw hole, the positioning screw hole that arrange corresponding to positioning through hole at the clamp back side, the semi-circular groove that clamp center is arranged, the rib groove matched with the rib on reinforcing bar arranged in semi-circular groove forms.
2. Ribbed Bar anti-fatigue test fixture as claimed in claim 1, is characterized in that: be connected with support rim in every side of U-shaped holder or the bottom of each fixed head; Support rim is the height of clamp apart from the height on fixed head top.
3. Ribbed Bar anti-fatigue test fixture as claimed in claim 1, is characterized in that: the thickness at least one times greatly of the U-shaped holder of Thickness Ratio of fixed head.
4. Ribbed Bar anti-fatigue test fixture as claimed in claim 1, is characterized in that: positioning through hole and positioning screw hole are all located at the center of place parts and longitudinal arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199929.1U CN204461894U (en) | 2015-04-03 | 2015-04-03 | Ribbed Bar anti-fatigue test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520199929.1U CN204461894U (en) | 2015-04-03 | 2015-04-03 | Ribbed Bar anti-fatigue test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204461894U true CN204461894U (en) | 2015-07-08 |
Family
ID=53668763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520199929.1U Expired - Fee Related CN204461894U (en) | 2015-04-03 | 2015-04-03 | Ribbed Bar anti-fatigue test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204461894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN108362536A (en) * | 2018-02-09 | 2018-08-03 | 广东省韶关市质量计量监督检测所 | A kind of processing method of Ribbed Bar axial tension fatigue test sample |
-
2015
- 2015-04-03 CN CN201520199929.1U patent/CN204461894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN108362536A (en) * | 2018-02-09 | 2018-08-03 | 广东省韶关市质量计量监督检测所 | A kind of processing method of Ribbed Bar axial tension fatigue test sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170711 Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20210403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |