CN202548007U - Clamp for bolt shear test - Google Patents
Clamp for bolt shear test Download PDFInfo
- Publication number
- CN202548007U CN202548007U CN2012200635364U CN201220063536U CN202548007U CN 202548007 U CN202548007 U CN 202548007U CN 2012200635364 U CN2012200635364 U CN 2012200635364U CN 201220063536 U CN201220063536 U CN 201220063536U CN 202548007 U CN202548007 U CN 202548007U
- Authority
- CN
- China
- Prior art keywords
- bolt
- clamping plate
- clamping device
- web member
- test fixture
- Prior art date
- 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
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 3
- 241000276425 Xiphophorus maculatus Species 0.000 abstract 1
- 235000000396 iron Nutrition 0.000 abstract 1
- 208000019300 CLIPPERS Diseases 0.000 description 2
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a clamp for a bolt shear test. The clamp comprises an upper clamping device and a lower clamping device, and is arranged on a universal tester, wherein the upper clamping device consists of a first connection piece and a third clamping plate; the lower clamping device consists of a second connection piece, a first clamping plate and a second clamping plate; the connection pieces have rectangular columnar body structures; dovetail irons are arranged on two opposite sides of each connection piece, matched with dovetail grooves of the tester and used for fixing the clamping devices on the tester; the clamping plates have platy structures, positioned on the tops of the connection pieces and provided with bolt holes; and the assembly mode for the upper clamping device and the lower clamping device is that one side of the clamping plate of the upper clamping device is downward, and one side of each clamping plate of the lower clamping device is upward, or one side of the clamping plate of the upper clamping device is upward, and one side of each clamping plate of the lower clamping device is downward. According to the clamp, a bolt is clamped through the bolt holes in the upper clamping device and the lower clamping device, so that the test on the shear resistance of the bolt can be performed. One clamping plate is arranged on one side of the upper clamping device and one side of the lower clamping device, and two clamping plates are arranged on the other side of the upper clamping device and the other side of the lower clamping device, so that a test piece can be clamped stably and staggered difficultly; and the detection data are accurate.
Description
Technical field
The utility model belongs to mechanical component processing and detection technique field, relates to a kind of universal testing machine anchor clamps, is specifically related to a kind of bolt and shears test fixture.
Technical background
Bolt is as the most frequently used securing member, and the connection that is widely used in engineering structure is fixed, and the connection of power grid iron tower adopts bolt to connect.Bolt bears shear stress in the connection of iron tower; After frequent vibrations cause bolt looseness; The iron tower stability of structure is mainly born by the anti-shear ability of bolt, comes off in case bolt looseness occurs, and other bolts will be born bigger shear stress; The intensity of bolt is directly connected to the safe operation of iron tower, and the anti-shear ability of therefore testing bolt is very important to grid power transmission safety.
The factor that influences bolt clippers shear force comprises material, thickness, aperture and the gap etc. of web member upper and lower plates, in order to test the shear stress of iron tower bolt, needs a kind of anchor clamps that are applicable to the bolt shear test of design.Use the anchor clamps of upper and lower holder, when carrying out shear test, test specimen deflection take place easily, send out between the clamper and produce friction force, influence test findings for single clamping plate,
Summary of the invention
For overcoming the deficiency of above-mentioned prior art; The utility model provides a kind of bolt to shear test fixture; Be used to test the shear stress of iron tower bolt, improve the accuracy of bolt shear test, guarantee that bolt is up-to-standard safe and reliable with being connected of power grid iron tower bolt.
The utility model bolt is sheared test fixture, comprises clamper and lower gripper.Last clamper is made up of first web member and three-ply board, and lower gripper is made up of second web member and first clamping plate, second clamping plate.Web member is a rectangle column body structure, and the both sides that web member is relative are provided with dovetail iron, and dovetail iron matches with the dovetail groove of testing machine, is used for fixed clamp device on testing machine.Clamping plate are slab structure, are positioned at the top of web member, and clamping plate are provided with bolt hole.The three-ply board of last clamper is positioned on the center line of first web member, and the lower gripper two clamping plates lays respectively at the both sides of the second web member center line.
The mounting means of upper and lower clamper is: three-ply board one side that goes up clamper down, first clamping plate of lower gripper, second clamping plate, one side are up.As selection, clamping plate one side of last clamper up, clamping plate one side of lower gripper is down.Bolt is sheared test fixture and is installed on the Wedge gripping of universal testing machine.Bolt is sheared test fixture and is provided with safety net, and safety net is installed in the two sides, front and back of testing machine with magnet absorption.The aperture of bolt hole is 13.5mm, 17.5mm, 21.5mm or 25.5mm, and the bolt aperture of other size also is the protection domain of the utility model.
The utility model erection bolt shear test on the Wedge gripping basis of common universal testing machine is used anchor clamps, through the bolt hole grip bolt of the upper and lower clamper of anchor clamps, realizes the detection test to the bolt clippers shearing stress.Upper and lower clamper one side is used single clamping plate, and opposite side is used double plate, and clamping test pieces is stable, the difficult dislocation, and it is accurate to detect data.Use the utility model simulation bolt actual operating mode, test the anti-shear ability of bolt, help adjusting and controlling the quality of bolt, improve the bolted reliability of power grid iron tower.The utility model is simple in structure, and is easy to use, can be used as the anchor clamps that various bolt stresses detect test.
Description of drawings
Fig. 1 shears the test fixture synoptic diagram for the utility model bolt;
Fig. 2 is the structural representation of last clamper;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the structural representation of lower gripper;
Fig. 5 is the side view of Fig. 4;
Fig. 6 safety net scheme of installation.
Wherein:
1-lower gripper, 2-last clamper, 3-safety net, 4a-first web member, 4b-second web member, 5-dovetail iron, 6a-first clamping plate, 6b-second clamping plate, 6c-three-ply board, 7-bolt hole, 8-nut, 9-bolt, 10-magnet.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
It is as shown in Figure 1 that the utility model bolt is sheared test fixture, comprises clamper 2 and lower gripper.Like Fig. 2, shown in Figure 3, last clamper is made up of the first web member 4a and three-ply board 6c.Like Fig. 4, shown in Figure 5, lower gripper is made up of the second web member 4b and the first clamping plate 6a, the second clamping plate 6b.Web member is a rectangle column body structure, and the both sides that web member is relative are provided with dovetail iron 5.Bolt is sheared test fixture and is installed on the universal testing machine of Wedge gripping, and dovetail iron matches with dovetail groove on the universal testing machine, is used for fixed clamp device on testing machine.Clamping plate are slab structure, are positioned at the top of web member, and clamping plate are provided with bolt hole 7, and spiro keyhole position is on center line, and the aperture of bolt hole is 21.5mm, are used to detect the bolt of test M20.The three-ply board 6c of last clamper is positioned on the center line of the first web member 4a, and the first clamping plate 6a of lower gripper and the second clamping plate 6b lay respectively at the both sides of the center line of the second web member 4b.The mounting means of clamper is: clamping plate one side that goes up clamper down, between the first clamping plate 6a of the three-ply board 6c of last clamper insertion lower gripper, the second clamping plate 6b.As shown in Figure 6, with magnet 10 safety net 3 is adsorbed the two sides, front and back that is installed in testing machine, hurt sb.'s feelings in case fly out behind the bolt fracture.
The method of application of the utility model does, last clamper 2 is installed on the Wedge gripping on the universal testing machine with lower gripper 1, and bolt 9 is passed the bolt hole 7 of upper and lower clamper, tightens to the torsional moment of testing requirements with nut 8.The starting characteristics test machine makes an experiment by testing requirements and to detect the anti-shearing force of bolt, log.
Claims (6)
1. a bolt is sheared test fixture; Comprise clamper (2) and lower gripper (1); It is characterized in that: the said clamper of going up is made up of first web member (4a) and three-ply board (6c); Lower gripper is made up of second web member (4b) and first clamping plate (6a), second clamping plate (6b), and said web member is a rectangle column body structure, and the both sides that web member is relative are provided with dovetail iron (5); Said clamping plate are slab structure, are positioned at the top of web member, and clamping plate are provided with bolt hole (7); The three-ply board (6c) of last clamper is positioned on the center line of first web member (4a), and the lower gripper two clamping plates lays respectively at the both sides of second web member (4b) center line.
2. bolt according to claim 1 is sheared test fixture, it is characterized in that: said three-ply board (6c) side that goes up clamper down, first clamping plate (6a) of lower gripper, second clamping plate (6b) side are up.
3. bolt according to claim 1 is sheared test fixture, it is characterized in that: clamping plate one side that goes up clamper up, clamping plate one side of lower gripper is down.
4. shear test fixture according to each described bolt of claim 1～3, it is characterized in that: said bolt is sheared test fixture and is installed on the Wedge gripping of universal testing machine.
5. bolt according to claim 4 is sheared test fixture, it is characterized in that: said bolt is sheared test fixture and is provided with safety net (3), and said safety net is installed in the two sides, front and back of testing machine with magnet (10) absorption.
6. bolt according to claim 1 is sheared test fixture, and it is characterized in that: the aperture of said bolt hole (7) is 13.5mm, 17.5mm, 21.5mm or 25.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200635364U CN202548007U (en) | 2012-02-27 | 2012-02-27 | Clamp for bolt shear test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200635364U CN202548007U (en) | 2012-02-27 | 2012-02-27 | Clamp for bolt shear test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202548007U true CN202548007U (en) | 2012-11-21 |
Family
ID=47168625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200635364U Expired - Fee Related CN202548007U (en) | 2012-02-27 | 2012-02-27 | Clamp for bolt shear test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202548007U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390852A (en) * | 2014-11-26 | 2015-03-04 | 河南航天精工制造有限公司 | Bolt shear test fixture and test machine |
| CN106323767A (en) * | 2016-09-29 | 2017-01-11 | 国网河南省电力公司电力科学研究院 | Testing device for shearing resistance of bolt |
| CN107167373A (en) * | 2017-07-03 | 2017-09-15 | 东南大学 | Multi-functional circular cylindricality test specimen shearing test clamp |
| CN110068513A (en) * | 2019-05-23 | 2019-07-30 | 江苏省建筑工程质量检测中心有限公司 | The multi-functional mechanical test tooling of pre-buried channel flow |
-
2012
- 2012-02-27 CN CN2012200635364U patent/CN202548007U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390852A (en) * | 2014-11-26 | 2015-03-04 | 河南航天精工制造有限公司 | Bolt shear test fixture and test machine |
| CN106323767A (en) * | 2016-09-29 | 2017-01-11 | 国网河南省电力公司电力科学研究院 | Testing device for shearing resistance of bolt |
| CN106323767B (en) * | 2016-09-29 | 2023-03-07 | 国网河南省电力公司电力科学研究院 | Bolt shearing resistance testing device |
| CN107167373A (en) * | 2017-07-03 | 2017-09-15 | 东南大学 | Multi-functional circular cylindricality test specimen shearing test clamp |
| CN110068513A (en) * | 2019-05-23 | 2019-07-30 | 江苏省建筑工程质量检测中心有限公司 | The multi-functional mechanical test tooling of pre-buried channel flow |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202548007U (en) | Clamp for bolt shear test | |
| CN103163019B (en) | For sheet metal or the Special fixture for tensile test of metal forming and using method | |
| CN102928288B (en) | A kind of tensile test fixture | |
| JP2012141136A (en) | Direct grip testing method and test jig | |
| CN203414337U (en) | Special clamp for automobile plate welding spot cross tensile experiment | |
| CN109443952B (en) | T-shaped joint shear test device | |
| CN202599752U (en) | Fixture for composite material tensile shearing/180-degree peeling test | |
| CN102879264A (en) | Clamp for testing interlaminar shear properties of pavement structure | |
| CN202548009U (en) | Bolt shearing test clamp | |
| CN203317265U (en) | Panel clamp | |
| CN203132915U (en) | Asphalt pavement structure shearing test clamp | |
| CN103411839A (en) | Metal electrification shearing test device and test method | |
| KR20190065846A (en) | Jig for fixing specimens | |
| US20140013856A1 (en) | Dynamic test fixture | |
| CN206399729U (en) | Eccentric compression member loading device | |
| CN206095609U (en) | A sensor fixed device for circuit breaker speed measuring in -process | |
| CN205562276U (en) | Developments perforation test device's test piece installation mechanism and test device | |
| CN204165831U (en) | A kind of for testing V-type open beam sample testing shear performance fixture | |
| CN202324775U (en) | Fixing device used for mounting equipment on power transmission tower | |
| CN114062118A (en) | Tension-compression-shearing integrated fiber laminated plate experiment clamp and using method thereof | |
| CN205209476U (en) | A strain measuring device for simple shear extrusion is experimental | |
| CN104655485A (en) | Clamp device for testing mechanical performance of composite material | |
| CN203101170U (en) | Fixture for detecting hysteretic behavior of electronic universal testing machine | |
| CN203083614U (en) | Vibration and temperature combinatorial test device | |
| JP2013108968A (en) | Tension testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130320 Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS Effective date: 20130320 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130320 Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No. Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 No. 238 South Sports street, Hebei, Shijiazhuang Patentee before: Hebei Electric Power Research Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20160227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |