CN202501977U - An experimental device for testing the normal stiffness and hysteresis characteristics of a double-bolt joint surface - Google Patents
An experimental device for testing the normal stiffness and hysteresis characteristics of a double-bolt joint surface Download PDFInfo
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- CN202501977U CN202501977U CN2012200535953U CN201220053595U CN202501977U CN 202501977 U CN202501977 U CN 202501977U CN 2012200535953 U CN2012200535953 U CN 2012200535953U CN 201220053595 U CN201220053595 U CN 201220053595U CN 202501977 U CN202501977 U CN 202501977U
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000006698 induction Effects 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract 3
- 230000000712 assembly Effects 0.000 abstract 3
- 239000011888 foil Substances 0.000 description 8
- 238000004154 testing of material Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model relates to an experimental device for testing normal-stiffness and retardant features of a double-bolt joint surface, especially to an experimental device for researching normal mechanics features and normal retardant features of a double-bolt joint surface. The experimental device comprises T-shaped rods (1), positioning supports (2), testing-used bolts (3), current vortex displacement sensors (4) and vortex induction supports (5), wherein the two T-shaped rods (2) are respectively connected with the positioning supports (2) and the vortex induction supports (5) via positioning screws, the current vortex displacement sensors (4) are fixed on the positioning supports (2), and the current vortex displacement sensors (4) are used for measuring deformation of the joint surface. Two groups of bolt assemblies penetrate through holes of the T-shaped rods to connect the two T-shaped rods, wherein the bolt assemblies are steel-structure-used bolt assemblies with high strength and large turret heads, a hole is punched on top of each bolt, and a strain gauge is installed inside the hole, so that the strain gauge is used to measure obtained pretightening force. The experimental device is characterized in that the structure is simple, that mounting and dismounting are convenient, that repeated experiments are easy to carry out, and that relative data about mechanics features of the bolt joint face is accurately acquired.
Description
Technical field
The utility model belongs to the Machine Design digitizing and makes the field, relates to a kind of faying face normal direction mechanics characteristic experimental apparatus, the experimental provision of particularly two bolt joint surface normal direction Research on Mechanical Properties and the research of normal direction lagging characteristics.
Background technology
Surface in contact between the parts is called " faying face ".All have a large amount of faying faces to exist in the present physical construction, the contact stiffness of faying face and contact damping are the important component parts of physical construction integral rigidity and damping, influence the performance of whole machinery, and the existence of damping is the reason that hysteresis phenomenon produces.The also modal faying face form of typical case is exactly the bolt faying face in the faying face.Therefore the mechanical characteristic of studying the bolt faying face is necessary.
The factor that influences the mechanical characteristic of bolt faying face has a lot, is difficult to accurately derive with the method for resolving the influence degree of each factor, therefore will study through the method for experiment.The experimental provision certain structures that present each associated mechanisms research institute uses is complicated, has increased the difficulty of revision test, takes time and effort; Some can not obtain accurate data, comprises the pretightning force that bolt loads and tests the experimental data that obtains at last, and experimental precision has much room for improvement.
Can know that to sum up project organization is simple, easy accessibility is beneficial to and carries out revision test, and can collect the experimental provision of authentic data, has very big necessity to more accurately grasping the faying face mechanical characteristic.
The utility model content
To above problem, it is a kind of simple in structure that the purpose of the utility model is to provide, and easy accessibility can carry out revision test, can accurately collect the bolt faying face mechanical characteristic experimental provision of required experimental data.
In order to realize above purpose, the technical scheme that the utility model is taked is:
The normal stiffness of a kind of pair of bolt joint surface and lagging characteristics experimental apparatus for testing; Constitute with bolt 3, eddy current displacement sensor 4 and vortex induction support 5 by T shape bar 1, locating support 2, test; The vertical respectively faying face in the two ends of the T shape head of T shape bar 1 is provided with a through hole, and test is passed these two through holes with bolt 3 two T shape bars 1 are fixedly connected; Two eddy current displacement sensors 4 are fixedly connected on two side surfaces of a T shape bar 1 respectively through locating support 2, the probe axis of eddy current displacement sensor 4 is vertical with the faying face that two T shape bars 1 constitute; Two vortex induction supports 5 lay respectively at two side surfaces of another T shape bar 1 correspondence, and vortex induction support 5 cooperates eddy current displacement sensors 4 to produce the current vortex signals.
Locating support 2 is axially adjustable along T shape bar 1 with the link position of T shape bar 1 with vortex induction support 5.
The top punching of bolt 3 as bolt used in test, hole installed inside foil gauge, and foil gauge is drawn the high-strength large hexagon head bolt used for steel structure that seals behind the output line.
Beneficial effect
This apparatus structure is simple, and easy accessibility can carry out revision test.Locating support 2 is axially adjustable along T shape bar 1 with the link position of T shape bar 1 with vortex induction support 5, has made things convenient for the operation of installing sensor in the use additional, can adjust the position of sensor in a wider context; Because test is with pre-buried foil gauge in the bolt, measured value that can be through reading strainmeter is the pretightning force of control loaded accurately; The faying face vertical direction that constitutes with two T shape bars 1 is provided with two eddy current displacement sensors, has avoided the deviation of one-sided sensing data, has guaranteed the accuracy that displacement data is gathered at the faying face place.
Description of drawings
Accompanying drawing 1 is the vertical view of this experimental provision;
Accompanying drawing 2 is front views of this experimental provision;
Accompanying drawing 3 is application module block diagrams of this experimental provision;
Accompanying drawing 4 is the be installed synoptic diagram of this experimental provision on Material Testing Machine.
1, T shape bar, 2, locating support, 3, test uses bolt, 4, eddy current displacement sensor, 5, the vortex induction support, 6, the Material Testing Machine part that is installed, Fa, pulling force.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1, the normal stiffness that is respectively two bolt joint surfaces shown in 2 and the vertical view and the front view of lagging characteristics experimental apparatus for testing, this device are to be made up of with bolt 3 and supporting pad and nut, two eddy current displacement sensors 4 and two vortex induction supports 5 thereof two T shape bars 1, four dog screws, two locating supports 2, two tests.
The vertical respectively faying face in the two ends of the T shape head of two T shape bars 1 is provided with a through hole, and test is passed these two through holes with bolt 3 two T shape bars 1 are fixedly connected.Two locating supports 2 are fixed on two side surfaces of a T shape bar 1 respectively through dog screw, for easy for installation, select not have on the T shape bar 1 those two side surfaces of T wardrobe raised face usually.Locating support 2 is provided with a slotted hole with certain regulated quantity, and dog screw passes this slotted hole and realizes being fixedly connected of locating support 2 and T shape bar 1, can conveniently adjust the axial location of locating support 2 along T shape bar 1 through this slotted hole.Two eddy current displacement sensors 4 are fixedly connected on two side surfaces of a T shape bar 1 respectively through locating support 2.The probe axis of eddy current displacement sensor 4 is vertical with the faying face that two T shape bars 1 constitute.Two vortex induction supports 5 are fixedly connected on two corresponding side surfaces of another T shape bar 1 and installing and locating support 2 respectively; Vortex induction support 5 is provided with a slotted hole with certain regulated quantity; Dog screw passes this slotted hole and realizes being fixedly connected of vortex induction support 5 and T shape bar 1; Because therefore the slotted hole with certain regulated quantity can conveniently adjust the axial location of vortex induction support 5 along eddy current displacement sensor 4.Two eddy current displacement sensors 4 are used to measure the deformation of faying face, because eddy current displacement sensor in use need produce the vortex induction signal, therefore need place metal flat at the probe front end.The effect of vortex induction support 5 just is to cooperate eddy current displacement sensor 4 to produce the current vortex signal; Vortex induction support 5 one end vertical electrical eddy displacement sensors 4 probe axis; And with the probe distance will be in the range ability of eddy current displacement sensor 4; And do not contact, such as 0.05-0.5mm.Test uses bolt 3 to be high-strength large hexagon head bolt used for steel structure, the top punching of bolt, and the sectional area in hole is less than 5% of the body of bolt sectional area, and hole depth is confirmed according to foil gauge length, hole installed inside foil gauge, foil gauge seals after drawing output line.
Fig. 3 is the normal stiffness of two bolt joint surfaces and the application module block diagram of lagging characteristics experimental apparatus for testing.This experimental provision is installed on the Material Testing Machine; By Material Testing Machine two flat square ends of T shape bar 1 in the experimental provision that assembles are applied power, the size and the parameters such as mode and time that are applied to the power on the T shape bar 1 in the experimentation are through the human-computer interaction interface setting.The data line of drawing with bolt 3 pre-buried foil gauges from test in this experimental provision is connected with strainmeter through electric bridge, and strainmeter is connected with data acquisition system (DAS).The pretightning force size that measures through foil gauge is sent to computing machine through data acquisition system (DAS), and the data of collection show through human-computer interaction interface, and it is big or small with the pretightning force on the bolt 3 in test to be convenient to control loaded.The data that Material Testing Machine is applied to the power on the T shape bar 1 and the displacement data that is installed in the faying face that the eddy current displacement sensor 4 on the experimental provision gathered are by the data acquisition system (DAS) collection, and storage on computers.Test resulting data and reliable experimental evidence is provided for normal stiffness and the lagging characteristics of studying two bolt joint surfaces.
Accompanying drawing 4 assembles the be installed synoptic diagram of back on Material Testing Machine for the normal stiffness and the lagging characteristics experimental apparatus for testing of two bolt joint surfaces.Fa representes the pulling force perpendicular to faying face that Material Testing Machine applies experimental provision among the figure.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200535953U CN202501977U (en) | 2012-02-17 | 2012-02-17 | An experimental device for testing the normal stiffness and hysteresis characteristics of a double-bolt joint surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200535953U CN202501977U (en) | 2012-02-17 | 2012-02-17 | An experimental device for testing the normal stiffness and hysteresis characteristics of a double-bolt joint surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501977U true CN202501977U (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200535953U Expired - Fee Related CN202501977U (en) | 2012-02-17 | 2012-02-17 | An experimental device for testing the normal stiffness and hysteresis characteristics of a double-bolt joint surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589865A (en) * | 2012-02-17 | 2012-07-18 | 北京工业大学 | Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface |
| CN114112343A (en) * | 2021-11-12 | 2022-03-01 | 中国民航大学 | Device for measuring micro looseness of double-screw connection structure |
-
2012
- 2012-02-17 CN CN2012200535953U patent/CN202501977U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589865A (en) * | 2012-02-17 | 2012-07-18 | 北京工业大学 | Normal stiffness and hysteresis characteristic test experimental device for double-bolt joint surface |
| CN114112343A (en) * | 2021-11-12 | 2022-03-01 | 中国民航大学 | Device for measuring micro looseness of double-screw connection structure |
| CN114112343B (en) * | 2021-11-12 | 2023-09-15 | 中国民航大学 | A device for measuring minute looseness of double-screw connection structures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Tieneng Inventor after: Pan Wendi Inventor after: Zhang Dongmei Inventor after: Zhang Aiping Inventor after: Liu Zhifeng Inventor after: Cai Ligang Inventor before: Guo Tieneng Inventor before: Zhang Dongmei Inventor before: Zhang Aiping Inventor before: Liu Zhifeng Inventor before: Cai Ligang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GUO TIENENG ZHANG DONGMEI ZHANG AIPING LIU ZHIFENG CAI LIGANG TO: GUO TIENENG PAN WENDI ZHANG DONGMEI ZHANG AIPING LIU ZHIFENG CAI LIGANG |
|
| 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: 20121024 Termination date: 20180217 |