CN104614162A - Bolt connecting piece deformation and friction simulation test device - Google Patents
Bolt connecting piece deformation and friction simulation test device Download PDFInfo
- Publication number
- CN104614162A CN104614162A CN201510020159.4A CN201510020159A CN104614162A CN 104614162 A CN104614162 A CN 104614162A CN 201510020159 A CN201510020159 A CN 201510020159A CN 104614162 A CN104614162 A CN 104614162A
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- bolt
- panel
- pressing plate
- plate
- test plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 76
- 239000011888 foil Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A bolt connector deformation and friction simulation test device comprises a test plate and a pressure plate group at least comprising a pair of pressure plates, wherein the length and the thickness of the test plate are both larger than those of the pressure plates, the pressure plates are provided with screw holes, and the diameters of the screw holes of each pair of pressure plates are changed according to a certain rule; the pair of pressing plates are respectively positioned on the upper surface and the lower surface of the test plate, two ends of the pair of pressing plates are respectively fixed through a pin and a bolt connecting piece, and the pin is in interference fit with the test plate and the pressing plates; the bolt connecting piece comprises a bolt penetrating through the screwing hole and the through hole, the diameter of the screwing hole is larger than that of the through hole, the bolt is in clearance fit with the screwing hole, the bolt is in interference fit with the through hole, one end of the bolt is fixed through a first nut and a locknut, and the other end of the bolt is provided with a second nut for applying bolt pretightening force; still the cover is equipped with the sleeve on the bolt, all be equipped with the first foil gage that is used for detecting the bolt pretightning force on sleeve and the test panel, all be equipped with the second foil gage that detects the strain value on test panel and the clamp plate.
Description
Technical field
The present invention relates to the distortion of a kind of bolt connection part and friction simulation test device.
Background technology
In reactor pressure vessel internals, fair water fin is fixed on hanging basket in freely-supported mode by pin and bolt.Under normal operating conditions, the temperature of fair water fin and hanging basket is 350 DEG C, when an accident occurs, after cold water is injected, fair water fin temperature quickly falls to about 150 DEG C, deforms inharmonious between it and hanging basket due to temperature difference, and the components such as fair water fin, hanging basket and attachment bolt will be caused to produce extra-stress, therefore, its stress, the mechanism of strain and influence factor thereof is necessary to get clear.Due to the restriction of existing test condition, be badly in need of design bolt connection part distortion and the simple and easy simulation test device that rubs, for measuring the inharmonious strain that causes of sample deformation or deflection, be design and the assessment of the integrity of structure based theoretical of reactor pressure vessel internals.
Summary of the invention
In order to overcome the shortcoming that strategy between existing reactor inner deflector and hanging basket and influence factor cannot be convenient for measuring, the invention provides the distortion of a kind of bolt connection part and friction simulation test device.
The technical solution used in the present invention is:
A kind of bolt connection part distortion and friction simulation test device, comprise test plate (panel) and at least comprise the pressing plate group of a pair pressing plate, the length of described test plate (panel) and thickness are all greater than described pressing plate, described pressing plate is provided with bolt apertures, the bolt apertures diameter of often pair of pressing plate changes according to certain rules, described test plate (panel) is provided with through hole, and described test plate (panel) is connected with described pressing plate is detachable, and often pair of described pressing plate coordinates with described test plate (panel) successively;
Pressing plate described in a pair lays respectively at the upper and lower surface of described test plate (panel), and two ends are fixed respectively by pin and bolt connection piece, described pin and described test plate (panel), pressing plate interference fit; Described bolt connection piece comprises the bolt running through described bolt apertures and through hole, the diameter of described bolt apertures is greater than described through hole, described bolt and described bolt apertures clearance fit, described bolt and described through hole interference fit, one end of described bolt is fixed by the first nut and retainer nut, and the other end is provided with the second nut for applying bolt pretightening;
Described bolt is also arranged with sleeve, conflicts with described pressing plate and the first nut or the second nut respectively in the two ends of described sleeve; Described sleeve and described test plate (panel) are equipped with the first foil gauge for detecting bolt pretightening, described test plate (panel) and pressing plate are equipped with the second foil gauge detecting strain value, and described first foil gauge is all connected with display device with the second foil gauge.
Further, the distance between described pin and bolt is greater than three times of described second foil gauge length.
Further, described first foil gauge lays respectively at the side of described sleeve and described test plate (panel), and described second foil gauge lays respectively at the upper surface of described test plate (panel) and described pressing plate.
Further, under hot conditions, described test plate (panel) and described pressing plate adopt the different metal material of linear expansion coefficient to make respectively.
Further, described bolt adopts the material identical with test plate (panel) or pressing plate to make.
Further, described pressing plate is positioned at the centre of described test plate (panel).
Further, described pressing plate group comprises at least 6 pairs of pressing plates.
Further, the sleeve near described second nut is provided with the first foil gauge.
Beneficial effect of the present invention is embodied in: utilize test plate (panel) and pressing plate mock-up reactor inner deflector and hanging basket respectively, energy simulate reactor inner deflector of the present invention is connected with the freely-supported of hanging basket, the simulation test of bolt connection piece distortion and friction under normal temperature and hot environment can be realized, cost of manufacture is low, easy to operate, greatly accelerate test and research progress.
Accompanying drawing explanation
Fig. 1 is axonometric drawing of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 be in Fig. 2 A-A to cut-open view.
Embodiment
With reference to accompanying drawing, a kind of bolt connection part distortion and friction simulation test device, comprise test plate (panel) 1 and at least comprise the pressing plate group of a pair pressing plate 2, the length of described test plate (panel) 1 and thickness are all greater than described pressing plate 2, described pressing plate 2 is provided with bolt apertures, and the bolt apertures diameter of often pair of pressing plate 2 changes according to certain rules, and described test plate (panel) 1 is provided with through hole, described test plate (panel) 1 is connected with described pressing plate 2 is detachable, and often pair of described pressing plate 2 coordinates with described test plate (panel) 1 successively;
Pressing plate 2 described in a pair lays respectively at the upper and lower surface of described test plate (panel) 1, and two ends are fixed respectively by pin 3 and bolt connection piece, described pin 3 and described test plate (panel) 1, pressing plate 2 interference fit; Described bolt connection piece comprises the bolt 4 running through described bolt apertures and through hole, the diameter of described bolt apertures is greater than described through hole, described bolt 4 and described bolt apertures clearance fit, described bolt 4 and described through hole interference fit, one end of described bolt 4 is fixed by the first nut 6 and retainer nut 7, and the other end is provided with the second nut 8 for applying bolt pretightening;
Described bolt 4 is also arranged with sleeve 5, conflicts with described pressing plate 2 and the first nut 6 or the second nut 8 respectively in the two ends of described sleeve 5; Described sleeve 5 and described test plate (panel) 1 are equipped with the first foil gauge 9 for detecting bolt pretightening, described test plate (panel) 1 and pressing plate 2 are equipped with the second foil gauge 10 detecting strain value, and described first foil gauge 9 is all connected with display device with the second foil gauge 10.
Further, the distance between described pin 3 and bolt 4 is greater than three times of described second foil gauge 10 length.
Further, described first foil gauge 9 lays respectively at the side of described sleeve 5 and described test plate (panel) 1, and described second foil gauge 10 lays respectively at the upper surface of described test plate (panel) 1 and described pressing plate 2.
Further, under hot conditions, described test plate (panel) 1 and described pressing plate 2 adopt the different metal material of linear expansion coefficient to make respectively.
Further, described bolt 4 adopts the material identical with test plate (panel) 1 or pressing plate 2 to make.
Further, described pressing plate 2 is positioned at the centre of described test plate (panel) 1.
Further, described pressing plate group comprises at least 6 pairs of pressing plates 2.
Further, the sleeve 5 near described second nut 8 is provided with the first foil gauge 9.
Distance between described pin 3 and bolt 4 is greater than three times of described second foil gauge 10 length, is the validity in order to ensure the second foil gauge 10 data.
The present invention utilizes test plate (panel) 1 and pressing plate 2 mock-up reactor inner deflector and hanging basket respectively.
Bolt 4 upper end is fixed by nut 6 and pre-load nut 7, and lower end applies bolt pretightening by the second nut 8.
Two described sleeves 5, conflicting with the first nut 6 and pressing plate 2 respectively in one of them two ends, conflicts with the second nut 8 and pressing plate 2 respectively in another two ends.
1) assembling of bolt connection piece
The middle upper and lower surface of test plate (panel) 1 installs two pressing plates 2 of a pair pressing plate respectively, pressing plate 2 one end is fixedly connected with test plate (panel) 1 by pin 3, pin 3 forms interference fit with test plate (panel) 1 and pressing plate 2 respectively, pressing plate 2 other end has the bolt 4 of double thread to be connected with test plate (panel) 1 by intermediate light slide strips, bolt 4 and test plate (panel) 1 form interference fit, bolt 4 and pressing plate 2 form larger clearance fit, and ensure the bolt apertures of pressing plate 2 and the through hole centering of test plate (panel) 1, sleeve 5 is arranged on the upper and lower surface of test plate (panel) 1 through bolt 4, 4 one, bolt is fixed by the first nut 6 and pre-load nut 7, and apply certain bolt pretightening by the second nut 8 of bolt 4 other end, namely the assembling of bolt connection piece is completed.
2) mode implemented under normal temperature and step:
A) moved to by bolt connection piece on tensile test machine worktable, the side of the sleeve 5 by test plate (panel) 1 and the second nut 8 pastes the first foil gauge 9 respectively, pastes the second foil gauge 10 respectively at the upper surface of test plate (panel) 1 and pressing plate 2;
B) two ends of test plate (panel) 1 are clamped with tensile test machine grip holder;
C) load controlled method is adopted testing machine to be loaded into the load value of regulation;
D) strain value of each point is measured under remaining on specified load condition;
By changing the pressing plate 2 of different bolt apertures diameter, and different pretightning forces being applied to the second nut 8, repeating above test process.Under specified load level, the deformation data of described test plate (panel) 1 and described pressing plate 2 under measuring different bolt pretightenings and bolt apertures diameter.The stress and strain value of described test plate (panel) 1 and described pressing plate 2 under acquiring different pressing plate bolt apertures diameter, different bolt pretightening, different stretch load-up condition by test, and then the relation obtained under normal temperature condition between them, and further its friction force of analytic method, friction factor and influence factor.
3) mode implemented under high temperature and step:
A) bolt connection piece is put into the high temperature furnace of appropriate size, test plate (panel) 1 two ends are free end;
B) in the stipulated time, stove is warming up to 350 DEG C, then keeps constant temperature a period of time;
C) instrument such as extensometer, grating instrument is utilized to measure the relative deformation of pressing plate 2, test plate (panel) 1 end face;
D) repeated temperature loads several times, calculates to obtain the mean value of deflection;
By changing the pressing plate 2 of different bolt apertures diameter, and different pretightning forces being applied to the second nut 8, repeating above test process.Under 350 DEG C of temperature levels, measure the deformation data of test plate (panel) 1 and pressing plate 2 under different bolt pretightenings and pressing plate bolt apertures diameter.Under obtaining 350 DEG C of temperature by test, the modified difference of test plate (panel) 1 and pressing plate 2 under different pressing plate bolt apertures diameter, different bolt pretightening, different bolt material, and calculate its stress and strain value, thus the relation under obtaining 350 DEG C of temperature between them, and further its friction force of analytic method, friction factor and influence factor.
Content described in this instructions embodiment is only exemplifying the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form of embodiment statement, and protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (9)
1. a bolt connection part distortion and friction simulation test device, it is characterized in that: comprise test plate (panel) and at least comprise the pressing plate group of a pair pressing plate, the length of described test plate (panel) and thickness are all greater than described pressing plate, described pressing plate is provided with bolt apertures, the bolt apertures diameter of often pair of pressing plate changes according to certain rules, described test plate (panel) is provided with through hole, and described test plate (panel) is connected with described pressing plate is detachable, and often pair of described pressing plate coordinates with described test plate (panel) successively;
Pressing plate described in a pair lays respectively at the upper and lower surface of described test plate (panel), and two ends are fixed respectively by pin and bolt connection piece, described pin and described test plate (panel), pressing plate interference fit; Described bolt connection piece comprises the bolt running through described bolt apertures and through hole, the diameter of described bolt apertures is greater than described through hole, described bolt and described bolt apertures clearance fit, described bolt and described through hole interference fit, one end of described bolt is fixed by the first nut and retainer nut, and the other end is provided with the second nut for applying bolt pretightening;
Described bolt is also arranged with sleeve, conflicts with described pressing plate and the first nut or the second nut respectively in the two ends of described sleeve; Described sleeve and described test plate (panel) are equipped with the first foil gauge for detecting bolt pretightening, described test plate (panel) and pressing plate are equipped with the second foil gauge detecting strain value, and described first foil gauge is all connected with display device with the second foil gauge.
2. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 1, it is characterized in that: the distance between described pin and bolt is greater than three times of described second foil gauge length.
3. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 2, it is characterized in that: described first foil gauge lays respectively at the side of described sleeve and described test plate (panel), described second foil gauge lays respectively at the upper surface of described test plate (panel) and described pressing plate.
4. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 3, and it is characterized in that: under hot conditions, described test plate (panel) and described pressing plate adopt the different metal material of linear expansion coefficient to make respectively.
5. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 4, it is characterized in that: described bolt adopts the material identical with test plate (panel) or pressing plate to make.
6. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 5, it is characterized in that: described pressing plate is positioned at the centre of described test plate (panel).
7. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 6, it is characterized in that: smooth double headed roller screw thread in the middle of described bolt.
8. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 7, it is characterized in that: described pressing plate group comprises at least 6 pairs of pressing plates.
9. a kind of bolt connection part is out of shape and friction simulation test device as claimed in claim 8, it is characterized in that: the sleeve near described second nut is provided with the first foil gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020159.4A CN104614162B (en) | 2015-01-15 | 2015-01-15 | Bolt connecting piece deformation and friction simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020159.4A CN104614162B (en) | 2015-01-15 | 2015-01-15 | Bolt connecting piece deformation and friction simulation test device |
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| Publication Number | Publication Date |
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| CN104614162A true CN104614162A (en) | 2015-05-13 |
| CN104614162B CN104614162B (en) | 2017-09-26 |
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| CN201510020159.4A Active CN104614162B (en) | 2015-01-15 | 2015-01-15 | Bolt connecting piece deformation and friction simulation test device |
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| CN (1) | CN104614162B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387468A (en) * | 2018-04-24 | 2018-08-10 | 桂林航天工业学院 | A kind of NiTi memorial alloys bolt connection part is from loose experimental rig and method |
| CN109283397A (en) * | 2018-09-14 | 2019-01-29 | 中国科学院合肥物质科学研究院 | A kind of superconducting conductor ac loss test device |
| CN111829739A (en) * | 2020-07-24 | 2020-10-27 | 河北科技大学 | Section beam bolt faying face rigidity test analogue means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387468A (en) * | 2018-04-24 | 2018-08-10 | 桂林航天工业学院 | A kind of NiTi memorial alloys bolt connection part is from loose experimental rig and method |
| CN109283397A (en) * | 2018-09-14 | 2019-01-29 | 中国科学院合肥物质科学研究院 | A kind of superconducting conductor ac loss test device |
| CN111829739A (en) * | 2020-07-24 | 2020-10-27 | 河北科技大学 | Section beam bolt faying face rigidity test analogue means |
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| Publication number | Publication date |
|---|---|
| CN104614162B (en) | 2017-09-26 |
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Application publication date: 20150513 Assignee: LISHUI ZHENGXIANG PEN INDUSTRY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037309 Denomination of invention: A Simulation Test Device for Deformation and Friction of Bolted Connections Granted publication date: 20170926 License type: Common License Record date: 20230630 |