CN106950046A - A kind of loosening test clamping device of the lower bolt-connection of lateral load effect - Google Patents
A kind of loosening test clamping device of the lower bolt-connection of lateral load effect Download PDFInfo
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- CN106950046A CN106950046A CN201710136836.8A CN201710136836A CN106950046A CN 106950046 A CN106950046 A CN 106950046A CN 201710136836 A CN201710136836 A CN 201710136836A CN 106950046 A CN106950046 A CN 106950046A
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- connecting plate
- bolt
- connection
- terminal end
- bare terminal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of loosening test clamping device of the lower bolt-connection of lateral load effect, it is characterised in that：The upper bare terminal end (1a) of upper fixture can be connected with the upper grip of fatigue tester；The bottom of upper fixture is the vertical upper junction plate (1c) for being provided with bolt hole；The lower bare terminal end (2a) of lower clamp can be connected with the lower chuck of fatigue tester；The top of lower clamp (2) is also to be provided with bolt hole on vertical lower connecting plate (2c), lower connecting plate (2c)；Lower connecting plate (2c) lower connecting plate (2c) has horizontal semicircular connecting plate groove in the upper and lower part of its bolt hole；The equal thread connection in left side and right side of lower connecting plate (2c) has vertical press strip (2e), press strip (2e) position corresponding with connecting plate groove is provided with semicircular press strip groove, and optical axis (2d) is entrenched in connecting plate groove.The device is combined with general fatigue tester, you can carry out the loosening test of the lower bolt-connection of lateral load effect.
Description
Technical field
The present invention relates to a kind of loosening test clamping device of bolt-connection.
Background technology
Bolt-connection is readily disassembled, changed, and cost is relatively low, thus bolt-connection has obtained extensive utilization.In static load
Under operating mode, bolt-connection all has self-locking performance.But bolt-connection is by external dynamic load (such as shock and vibration and thermic load
Deng) when, different degrees of loosening, the especially oscillation crosswise vertical with bolt axis (effect of lateral load) can be produced,
It is more easy to cause the loosening of bolt-connection.Bolt connection loosening will cause connection pretightning force to reduce or even lose, and cause each in connection
Part can not play due performance or even failure.Therefore, it can be bolt connection structure to carry out loosening test to bolt-connection
Design with using providing important test basis.
The folder recommended in the loosening test national standard of bolt-connection under existing lateral load effect
Tool, is only used for special fastener oscillation crosswise testing machine, it is impossible to used on general fatigue tester.But it is most of
R＆D institution, enterprise use general fatigue tester, this cause lateral load act under bolt-connection
Loosening test is difficult to so that the design of bolt connection structure is difficult to rapid and obtains test basis branch on a large scale with using
Support and guidance.
The content of the invention
, should it is an object of the invention to provide a kind of loosening test clamping device of the lower bolt-connection of lateral load effect
Device is combined with general fatigue tester, you can carry out the loosening test of the lower bolt-connection of lateral load effect, more square
Test basis is provided for the design of bolt connection structure with using, so as to more effectively improve bolt connection structure easy row
Reliability.
The present invention realizes that the technical scheme that its goal of the invention is used is：A kind of lower bolt-connection of lateral load effect
Loosening test clamping device, a kind of loosening test clamping device of the lower bolt-connection of lateral load effect, it is characterised in that：
The top of upper fixture is cylindrical upper bare terminal end, and upper bare terminal end can be connected with the upper grip of fatigue tester；On
The middle part of fixture is upper cross plate, and the bottom of upper fixture is that insertion experiment bolt is provided with vertical upper junction plate, upper junction plate
Bolt hole.
The bottom of lower clamp is cylindrical lower bare terminal end, and lower bare terminal end can be connected with the lower chuck of fatigue tester；Under
The middle part of fixture is lower cross plate, and the top of lower clamp is that insertion experiment bolt is also provided with vertical lower connecting plate, lower connecting plate
Bolt hole, and lower connecting plate is provided with horizontal semicircular connecting plate groove in the upper and lower part of its bolt hole；Lower company
The equal thread connection in left side and right side of fishplate bar has vertical press strip, and press strip is provided with and connected at position corresponding with connecting plate groove
The press strip groove of plate matching grooves；Optical axis is entrenched in connecting plate groove.
Working process and principle of the invention are：
The lower bare terminal end of lower clamp is fixed on the lower chuck of general fatigue tester, while by the upper folder of upper fixture
End bare terminal end is held to be fixed on the upper grip of fatigue tester；Subsequent operation fatigue testing machine, makes the bolt hole on lower connecting plate
With the bolt hole alignment on upper junction plate；Pressure sensor is inserted in experiment bolt again, will finally be tested under screw bolt passes
The bolt hole on bolt hole and upper junction plate on connecting plate, along with packing ring, the nut of tightening test bolt.Start fatigue examination
Machine is tested, applies the lateral load of setting to experiment bolt by the upper grip of fatigue tester and the upper fixture of the present invention,
And the clamping force for testing bolt is recorded by pressure sensor, you can carry out the loosening test of bolt-connection under lateral load.
Compared with prior art, the beneficial effects of the invention are as follows：
First, the present invention only need upper and lower two fixtures can will experiment bolt be connected with general fatigue tester, enter
And apply the lateral load of setting to experiment bolt by fatigue tester, carry out the lower bolt connection of lateral load effect
The loosening test connect.The loosening test of bolt-connection is that can be achieved without using special fatigue test machine under lateral load,
So that the loosening test of the lower bolt-connection of lateral load effect is more simply, conveniently, easily；So as to more easily be bolt
The design of draw bail is with using test basis is provided, more effectively improving the reliability of bolt-connection.
2nd, the two circular optical axises set between the upper junction plate of upper fixture and the lower connecting plate of lower clamp, during experiment on
Contacted between connecting plate and lower connecting plate by transverse axis, and carry out rolling friction；Avoid upper junction plate and lower connecting plate
Inner surface directly contact and sliding friction, the factor pair such as the sharp wear for greatly reducing frictional force and its being brought, temperature rise
The influence of test accuracy, also improves the service life of loosening test clamping device.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the main structure diagram of the embodiment of the present invention (setting up experiment bolt).
Fig. 2 is Fig. 1 A-A sectional views.
Embodiment
Embodiment
Fig. 1-2 shows that a kind of embodiment of the invention is：A kind of lower bolt-connection of lateral load effect
Loosening test clamping device, it is characterised in that：
The upper bare terminal end 1a of cylinder is in the top of upper fixture, the upper grip phase that upper bare terminal end 1a can be with fatigue tester
Even；The middle part of upper fixture is upper cross plate 1b, the bottom of upper fixture 1 be provided with vertical upper junction plate 1c, upper junction plate 1c it is slotting
Enter to test the bolt hole of bolt 3.
The lower bare terminal end 2a of cylinder is in the bottom of lower clamp, the lower chuck phase that lower bare terminal end 2a can be with fatigue tester
Even；The middle part of lower clamp is lower cross plate 2b, and the top of lower clamp 2 is also to be provided with vertical lower connecting plate 2c, lower connecting plate 2c
The bolt hole of insertion experiment bolt 3, and lower connecting plate 2c be provided with the upper and lower part of its bolt hole it is horizontal semicircular
Connecting plate groove；The lower connecting plate 2c equal thread connection in left side and right side has vertical press strip 2e, press strip 2e and connecting plate groove
The press strip groove with connecting plate matching grooves is provided with corresponding position；Optical axis 2d is entrenched in connecting plate groove.
Three parts (upper bare terminal end 1a, upper cross plate 1b and upper junction plate 1c) of upper fixture of the present invention can both pass through welding
Connection or the overall structure of integration；Three parts (lower bare terminal end 2a, lower cross plate 2b and the lower connecting plate of lower clamp
2c) can also by being welded to connect, or integration overall structure.
Claims (1)
1. a kind of loosening test clamping device of the lower bolt-connection of lateral load effect, it is characterised in that：
The upper bare terminal end (1a) of cylinder is in the top of upper fixture, the upper grip phase that upper bare terminal end (1a) can be with fatigue tester
Even；The middle part of upper fixture is upper cross plate (1b), and the bottom of upper fixture (1) is vertical upper junction plate (1c), upper junction plate (1c)
On be provided with insertion experiment bolt (3) bolt hole；
The lower bare terminal end (2a) of cylinder is in the bottom of lower clamp, the lower chuck phase that lower bare terminal end (2a) can be with fatigue tester
Even；The middle part of lower clamp is lower cross plate (2b), and the top of lower clamp (2) is vertical lower connecting plate (2c), lower connecting plate (2c)
On be also provided with the bolt hole of insertion experiment bolt (3), and lower connecting plate (2c) is provided with horizontal stroke in the upper and lower part of its bolt hole
To semicircular connecting plate groove；The equal thread connection in left side and right side of lower connecting plate (2c) has vertical press strip (2e), pressure
The press strip groove with connecting plate matching grooves is provided with bar (2e) position corresponding with connecting plate groove；Optical axis (2d) company of being entrenched in
In fishplate bar groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136836.8A CN106950046A (en) | 2017-03-09 | 2017-03-09 | A kind of loosening test clamping device of the lower bolt-connection of lateral load effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710136836.8A CN106950046A (en) | 2017-03-09 | 2017-03-09 | A kind of loosening test clamping device of the lower bolt-connection of lateral load effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106950046A true CN106950046A (en) | 2017-07-14 |
Family
ID=59467319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710136836.8A Pending CN106950046A (en) | 2017-03-09 | 2017-03-09 | A kind of loosening test clamping device of the lower bolt-connection of lateral load effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106950046A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220368A (en) * | 2020-01-19 | 2020-06-02 | 北京交通大学 | Fatigue damage model test platform and method for connecting bolt of fabricated lining segment |
| CN111307387A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Bolt transverse load and axial load test clamp and test method thereof |
| CN112539926A (en) * | 2020-11-26 | 2021-03-23 | 北京工业大学 | Can test device of bolt not hard up action under multi-angle load effect |
| CN114199752A (en) * | 2021-12-15 | 2022-03-18 | 西南交通大学 | Bolt loosening test device and method for simulating corrosive environment |
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| JPH02205736A (en) * | 1989-02-03 | 1990-08-15 | Mitsui Eng & Shipbuild Co Ltd | Method for detecting looseness of bolt and nut |
| CN201016901Y (en) * | 2007-03-28 | 2008-02-06 | 中国第一汽车集团公司 | Flywheel bolt fatigue test cramping apparatus |
| CN101368894A (en) * | 2008-09-18 | 2009-02-18 | 江苏明珠试验机械有限公司 | Tensile testing machine |
| CN102519788A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学台州研究院 | Tensile test chucking device of material performance testing machine |
| CN202582991U (en) * | 2012-04-13 | 2012-12-05 | 奇瑞汽车股份有限公司 | Bolt shear fatigue test fixture device |
| JPWO2011136060A1 (en) * | 2010-04-26 | 2013-07-18 | 日本電気株式会社 | Fixing jig for fatigue test specimen and fatigue test equipment |
| CN204679270U (en) * | 2015-06-17 | 2015-09-30 | 西南交通大学 | The loosening test device that under a kind of lateral load, bolt group connects |
| CN105806701A (en) * | 2016-03-17 | 2016-07-27 | 西北工业大学 | High-temperature fatigue test clamp device for pretension bolt |
| CN106441838A (en) * | 2016-09-07 | 2017-02-22 | 三峡大学 | Adjustable high precision bolt dynamic loosening test vibration instrument under action of tensile, compression and shear force |
| CN206556856U (en) * | 2017-03-09 | 2017-10-13 | 西南交通大学 | The loosening test clamping device of the lower bolt-connection of lateral load effect |
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2017
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Patent Citations (10)
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|---|---|---|---|---|
| JPH02205736A (en) * | 1989-02-03 | 1990-08-15 | Mitsui Eng & Shipbuild Co Ltd | Method for detecting looseness of bolt and nut |
| CN201016901Y (en) * | 2007-03-28 | 2008-02-06 | 中国第一汽车集团公司 | Flywheel bolt fatigue test cramping apparatus |
| CN101368894A (en) * | 2008-09-18 | 2009-02-18 | 江苏明珠试验机械有限公司 | Tensile testing machine |
| JPWO2011136060A1 (en) * | 2010-04-26 | 2013-07-18 | 日本電気株式会社 | Fixing jig for fatigue test specimen and fatigue test equipment |
| CN102519788A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学台州研究院 | Tensile test chucking device of material performance testing machine |
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| CN204679270U (en) * | 2015-06-17 | 2015-09-30 | 西南交通大学 | The loosening test device that under a kind of lateral load, bolt group connects |
| CN105806701A (en) * | 2016-03-17 | 2016-07-27 | 西北工业大学 | High-temperature fatigue test clamp device for pretension bolt |
| CN106441838A (en) * | 2016-09-07 | 2017-02-22 | 三峡大学 | Adjustable high precision bolt dynamic loosening test vibration instrument under action of tensile, compression and shear force |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220368A (en) * | 2020-01-19 | 2020-06-02 | 北京交通大学 | Fatigue damage model test platform and method for connecting bolt of fabricated lining segment |
| CN111307387A (en) * | 2020-03-06 | 2020-06-19 | 西南交通大学 | Bolt transverse load and axial load test clamp and test method thereof |
| CN112539926A (en) * | 2020-11-26 | 2021-03-23 | 北京工业大学 | Can test device of bolt not hard up action under multi-angle load effect |
| CN114199752A (en) * | 2021-12-15 | 2022-03-18 | 西南交通大学 | Bolt loosening test device and method for simulating corrosive environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Minhao Inventor after: Liu Xuetong Inventor after: Li Jing Inventor after: Liu Jianhua Inventor after: Cai Zhenbing Inventor after: Peng Jinfang Inventor after: Ma Lijun Inventor after: Zhang Chaoqian Inventor after: Chen Duoli Inventor after: Zhou Junbo Inventor before: Zhu Minhao Inventor before: Li Jing Inventor before: Liu Jianhua Inventor before: Cai Zhenbing Inventor before: Peng Jinfang Inventor before: Chen Duoli Inventor before: Zhou Junbo Inventor before: Liu Xuetong |
|
| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |