CN105352642A - Strain gauge pressurization device - Google Patents
Strain gauge pressurization device Download PDFInfo
- Publication number
- CN105352642A CN105352642A CN201510814793.5A CN201510814793A CN105352642A CN 105352642 A CN105352642 A CN 105352642A CN 201510814793 A CN201510814793 A CN 201510814793A CN 105352642 A CN105352642 A CN 105352642A
- Authority
- CN
- China
- Prior art keywords
- pressing plate
- foil gauge
- pressue device
- annular part
- interior annular
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 claims abstract description 53
- 239000011888 foil Substances 0.000 claims description 68
- 229920001971 elastomer Polymers 0.000 claims description 25
- 239000000806 elastomer Substances 0.000 claims description 23
- 239000010408 film Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920002334 Spandex Polymers 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
Abstract
A strain gauge pressurization device is used for enabling a strain gauge to be fastened and fixed to an annular test piece. The strain gauge pressurization device is characterized in that the strain gauge pressurization device comprises a first pressure plate, a second pressure plate, an inner side ring unit, an outer side ring unit, an elastic block and a force application element, wherein the first pressure plate and the second pressure plate are oppositely arranged at intervals; the inner side ring unit and the outer side ring unit are concentric and arranged between the first pressure plate and the second pressure plate; an annular second gap is arranged between the inner side ring unit and the outer side ring unit and is used for accommodating the annular test piece; the surface, opposite to the first pressure plate, of the annular test piece is provided with a strain gauge; the elastic block is arranged between the first pressure plate and the second pressure plate, and is arranged on the side, mounted with the strain gauge, of the annular test piece and is corresponding to the strain gauge; and the force application element is used for applying action force to the first pressure plate and the second pressure plate to enable the first pressure plate and the second pressure plate to draw close mutually so as to press the annular test piece through the elastic block.
Description
Technical field
The present invention relates to a kind of foil gauge pressue device, particularly relate to a kind of narrow annular structural strain sheet pressue device.
Background technology
Aeroengine rotor should ensure that the axial load of bearing at all working state lower bearing is in a suitable scope, guarantees bearing safe and reliable work within the life-span of regulation.If axial force is excessive, the problem such as bearing overloading, overtemperature can be caused; Axial force is too small or reverse, easily causes the problem such as bearing light load slipping, scratch damage.In reseach of engine process, need the axial load on Real-Time Monitoring rotor bearing, and adjusted and make it within a zone of reasonableness, this just needs to measure rotor axial power.
The resilient ring that measurement ring of aircraft engine rotor shaft holds axial force is a kind of typical narrow annular structure---resilient ring, it pastes the foil gauge composition test bridge road of some by the correct position in resilient ring one side end face, the dependent variable that direct measurement is caused by resilient ring flexural deformation, and then acquisition causes the diastrophic rotor axial load of resilient ring.On resilient ring, the paste position of foil gauge and the degree of reliability of stickup have material impact to the measuring accuracy of resilient ring sensor and serviceable life.In practical operation, how by strain gauge adhesion in narrow annular structure and will be how the difficult problem that prior art exists by its cure under pressure after strain gauge adhesion is on the end face of narrow annular structure.Should ensure in operation reliably to pressurize to ensure foil gauge attachment firmly to resilient ring, resilient ring can not be allowed again to produce permanent strain.
Specifically, the operation of existing stickup foil gauge may have following problem: if directly pressurize in narrow annular structure, easily make the foil gauge generation slippage pasted, offset correct mounting position, affect measurement sensistivity and precision; If the snap-in force applied is too little, strain gauge adhesion is insecure, makes it soak at subsequent high temperature, lubricating oil and under load environment, glue easily occur and had lost efficacy, the serviceable life of influence elastane ring sensor; If the snap-in force applied is too large, resilient ring may be made to produce permanent strain and scrap, also likely make foil gauge generation slippage.
Pressuring method after foil gauge pastes on testpieces (such as resilient ring etc.) is determined by paste position and convenient degree of operation.For can the larger testpieces of retaining part, generally by clamp, the dynamics of clamping can only be determined by clip itself.For because paste position is comparatively dark or it is too little to paste site area, cannot clamps or clamp unstable testpieces by clip, generally need to design special pressue device.Existing loop configuration pressue device mainly bolt clip plate structure, the drawback of this structure is that it can not effectively control snap-in force size.Snap-in force is too small, and foil gauge easily plays glue and lost efficacy under complicated harsh environments; Snap-in force is excessive, and resilient ring (resilient ring that especially structure is thin) may be caused to produce permanent strain; If testpieces is narrow annular structure, carries out pressurizeing at narrow zone and also easily cause foil gauge slippage origin-location, the sensitivity of influence elastane ring sensor and measuring accuracy.
Summary of the invention
One of them object of the present invention proposes a kind of foil gauge pressue device, reliably can paste foil gauge, to solve prior art Problems existing on ring test part.
For solving the problem, one embodiment of the invention proposes a kind of foil gauge pressue device, for being fixed a foil gauge in a ring test part, it is characterized in that, described foil gauge pressue device comprises:
Relatively spaced first pressing plate and the second pressing plate;
The interior annular part of concentric setting and exterior annular part, be arranged between described first pressing plate and described second pressing plate, there is between described interior annular part and described exterior annular part the second gap of ring-type, for accommodating described ring test part, described ring test part and described first pressing plate opposite side are provided with described foil gauge;
Elastomer block, between described first pressing plate and described second pressing plate, is arranged on the side being pasted with described foil gauge of described ring test part and corresponding described foil gauge; And
Force application element, for described first pressing plate and described second pressing plate apply acting force, make described first pressing plate and described second pressing plate close to each other, to extrude described ring test part by described elastomer block.
The foil gauge pressue device that the embodiment of the present invention proposes, can not only ensure that foil gauge and loop test part are consolidated required axle pressure, the permanent strain of foil gauge generation slippage and loop test part can be avoided simultaneously, thus realize steadily pressurizeing, suitable stressed object being provided.
Accompanying drawing explanation
Accompanying drawing is herein merged in instructions, and forms the part of this instructions, shows the embodiment meeting the application, and is used from instructions one principle explaining the application.
Fig. 1 is the schematic diagram utilizing the foil gauge pressue device of one embodiment of the invention to paste foil gauge on loop test part;
Fig. 2 is the transverse sectional view along A-A line in Fig. 1;
Fig. 3 is the schematic diagram of the loop test part being pasted with foil gauge;
Fig. 4 is the transverse sectional view along C-C line in Fig. 3.
Embodiment
Fig. 1 is the schematic diagram utilizing the foil gauge pressue device of one embodiment of the invention to paste foil gauge on loop test part; Fig. 2 is the transverse sectional view along A-A line in Fig. 1.As shown in Figure 1 to Figure 2, the embodiment of the present invention proposes a kind of foil gauge pressue device, comprises bolt 1, nut 2, two plain cushion 3, first pressing plates 4, multiple elastomer block 5, film 6, exterior annular part 7, interior annular part 9, second pressing plate 10.
Bolt 1 and nut 2 are for providing axle pressure, two plain cushions 3 are arranged at the inner side (side that namely bolt 1 is relative with nut 2) of bolt 1 and nut 2 respectively, first pressing plate 4 is arranged at the relative side of two plain cushions 3 respectively with the second pressing plate 10, multiple elastomer block 5, film 6, exterior annular part 7, interior annular part 9 and the loop test part 8 posting foil gauge S (being shown in Fig. 3) are arranged between the first pressing plate 4 and the second pressing plate 10, wherein interior annular part 9, exterior annular part 7 and loop test part 8 are arranged at the inner side (i.e. the side relative to the first pressing plate 4 of the second pressing plate 10) of the second pressing plate 10, loop test part 8 is fastened in gap therebetween by interior annular part 9 and exterior annular part 7, elastomer block 5 is from the position pressure of the corresponding foil gauge S in the top of the one side of the attachment foil gauge S near loop test part 8, elastomer block 5 is preferably block rubber, film 6 is provided with between each elastomer block 5 and corresponding foil gauge S, contact with block rubber to avoid the viscose glue of foil gauge S.Axial pressure is applied by bolt 1 and nut 2, this axle pressure acts on elastomer block 5, exterior annular part 7, interior annular part 9 and loop test part 8, to be mounted on securely on loop test part 8 by the foil gauge mounted in advance S by two plain cushions 3, first pressing plate 4, second pressing plate 10.This device makes it to be pasted onto loop test part 8 securely for pressurization on foil gauge S.
In the present embodiment, bolt 1 sequentially wears the perforate of plain cushion 3, the perforate of the first pressing plate 4, the perforate of interior annular part 9, the perforate of the second pressing plate 10, the perforate of another plain cushion 3, nut is locked on bolt, and can be relative close with the second pressing plate 10 by sealed driving first pressing plate 4, make the first pressing plate 4 and the second pressing plate 10 extrude elastomer block 5 and interior annular part 9, exterior annular part 7 and the loop test part 8 of middle setting.The perforate of the perforate of plain cushion 3, the perforate of the first pressing plate 4, interior annular part 9, the perforate of the second pressing plate 10, the perforate of another plain cushion 3 are all coaxially arranged with bolt 1, to provide axial snap-in force.
In the present embodiment, loop test part 8 can be resilient ring above.For structure and the effect of foil gauge pressue device can be described, first loop test part 8 is described.Fig. 3 and Fig. 4 is respectively the schematic diagram of the loop test part being pasted with foil gauge and the transverse sectional view along C-C line in Fig. 3.As shown in Figure 3 and Figure 4, loop test part 8 comprises body 81 and boss 82, and boss 82 is structure required in follow-up test, and it is divided into body 81 two end faces perpendicular to axial direction, and uniform intervals is arranged on each end face.One or two end face of body 81 can paste foil gauge S, only on one of them end face of body 81, paste foil gauge S in the present embodiment, and avoid boss 82.
Below the structure of pressue device and working method are described.As shown in Figures 2 and 3, loop test part 8 is placed on the second pressing plate 10, its inner side and outer side arranges interior annular part 9 and exterior annular part 7 respectively, the end face of the side (hereinafter referred to as " inner side ") of the close bolt 1 of interior annular part 9 raises up, described projection is such as ring-type, form position limiting convex ring 91, the upper surface of position limiting convex ring 91 is the second upper surface.The position limiting convex ring 91 arranging certain height of projection is in order to when the first pressing plate 4 presses down elastomer block 5, the deflection of restriction elastomer block 5, thus ensure that snap-in force that bolt 1 applied when compressing the first pressing plate 4 and the second pressing plate 10 by nut 2, a pair plain cushion 3 is in claimed range.That is, the size of snap-in force can be regulated by the height of the position limiting convex ring 91 of interior annular part 9 and elastomer block 5.Because interior annular part 9 has certain rigidity, force application element force is to elastomer block 5, and when elastomer block is compressed to a certain degree, top board 4 contacts bulge loop 91, and bulge loop 91 can not be compressed substantially, and force application element cannot continue force herein, just can stop force.
The upper surface 901 of the side away from bolt 1 (hereinafter referred to as " outside ") of interior annular part 9 is concordant with the upper surface 801 of the body 81 of loop test part 8, and the upper surface of exterior annular part 7 is also concordant with the upper surface 701 of the body 81 of loop test part 8.As shown in Figure 3, the radial width of loop test part 8 is very narrow, and be typical narrow annular structure, foil gauge S is pasted onto the predeterminated position of the upper surface of the body 81 of loop test part 8.In addition, thin film 6 can be covered on foil gauge S, the non cohesive gel of film 6 own, foil gauge S and the elastomer block above it 5 are separated, avoid the strain gage adhesive pasting foil gauge S used to adhere in elastomer block 5.
Due to the upper surface 701 of the upper surface 901 outside interior annular part 9, exterior annular part 7 and the upper surface 801 of loop test part 8 concordant, the snap-in force applied by bolt 1 and nut 2 is delivered to elastomer block 5 and film 6, then is shared by interior annular part 9, exterior annular part 7 and loop test part 8 by elastomer block 5.That is, elastomer block 5 and film 6 can be supported completely by interior annular part 9, loop test part 8 and exterior annular part 7, and the foil gauge S after avoiding prior art to pressurize, loop test part 8 pasted is shifted.
The upper surface of embodiment of the present invention Elastic block 5 contacts with the first pressing plate 4, when tight a bolt the nut 2 on 1 time, by the power transmission of a pair plain cushion 3, spacing between first pressing plate 4 and the second pressing plate 10 reduces, elasticity of compression block 5, until the position limiting convex ring 91 of the lower surface of the first pressing plate 4 and the inner side of interior annular part 9 is fitted, the snap-in force that foil gauge S is required together with loop test part 8 consolidation can be ensured like this, can not cause again foil gauge S that the permanent strain of slippage and loop test part 8 occurs, thus the object that realization is steadily pressurizeed, institute's compressive force is suitable.
In addition, in the embodiment of the present invention, be only the use of citing for generation of the bolt 1 of axial force and nut 2, axial force can be produced by other force application elements in practice, but not be defined in bolt 1 and nut 2.Other force application elements such as vice, hydraulic pulldown can replace screw bolt and nut.In addition, plain cushion of the present invention can omit, namely bolt 1 and nut 2 directly produce acting force between upper first pressing plate 4 and the second pressing plate 10, extrude interior annular part 9, exterior annular part 7, elastomer block 5, film 6, loop test part 8 by the first pressing plate 4 and the second pressing plate 10, foil gauge S is fitted on loop test part 8 securely.
From the above, the foil gauge pressue device that the embodiment of the present invention proposes, can not only ensure that foil gauge and loop test part are consolidated required axle pressure, the permanent strain of foil gauge generation slippage and loop test part can be avoided simultaneously, thus realize steadily pressurizeing, suitable stressed object being provided.
In addition, in literary composition " on ", D score, " interior ", " outward " be all comparatively speaking, be description with reference to the accompanying drawings so that those of ordinary skill in the art can understand, be not particularly limited to.
Should be understood that, the application is not limited to precision architecture described above and illustrated in the accompanying drawings, and can carry out various amendment and change not departing from its scope.The scope of the application is only limited by appended claim.
Claims (10)
1. a foil gauge pressue device, for being fixed a foil gauge in a ring test part, is characterized in that, described foil gauge pressue device comprises:
Relatively spaced first pressing plate and the second pressing plate;
The interior annular part of concentric setting and exterior annular part, be arranged between described first pressing plate and described second pressing plate, there is between described interior annular part and described exterior annular part the second gap of ring-type, for accommodating described ring test part, described ring test part and described first pressing plate opposite side are provided with described foil gauge;
Elastomer block, between described first pressing plate and described second pressing plate, is arranged on the side being pasted with described foil gauge of described ring test part and corresponding described foil gauge; And
Force application element, for described first pressing plate and described second pressing plate apply acting force, make described first pressing plate and described second pressing plate close to each other, to extrude described ring test part by described elastomer block.
2. foil gauge pressue device as claimed in claim 1, it is characterized in that, described interior annular part has projection, and described projection is positioned at the one side towards described first pressing plate of described interior annular part.
3. foil gauge pressue device as claimed in claim 2, it is characterized in that, described projection is position limiting convex ring, and described position limiting convex ring is positioned at the side away from described ring test part of described inner annular.
4. foil gauge pressue device as claimed in claim 2, it is characterized in that, described interior annular part has towards the first upper surface of described first pressing plate near the side of described ring test part, and the upper surface towards described first pressing plate of described first upper surface of described interior annular part, the upper surface towards described first pressing plate of described ring test part and described exterior annular part flushes mutually.
5. foil gauge pressue device as claimed in claim 4, it is characterized in that, described projection has the second upper surface towards described first pressing plate, and described second end face is higher than described first upper surface of described interior annular part.
6. foil gauge pressue device as claimed in claim 1, it is characterized in that, described force application element comprises screw bolt and nut, be separately positioned on described first pressing plate and described second pressing plate mutually away from side, described first pressing plate and described second pressing plate have perforate respectively, described bolt is through the perforate of the perforate of described first pressing plate, described interior annular part and described second pressing plate, and described nut can be sealed to drive described first pressing plate and described second pressing plate relative movement on described bolt.
7. foil gauge pressue device as claimed in claim 6, it is characterized in that, described foil gauge pressue device also comprises the first plain cushion and the second plain cushion, be separately positioned on described first pressing plate and described second pressing plate mutually away from side, and be positioned at described bolt and the opposed facing side of described nut.
8. foil gauge pressue device as claimed in claim 6, it is characterized in that, described bolt, described nut, described interior annular part are arranged all with one heart.
9. foil gauge pressue device as claimed in claim 1, it is characterized in that, described foil gauge pressue device also comprises film, is arranged between described elastomer block and described foil gauge.
10. foil gauge pressue device as claimed in claim 1, it is characterized in that, described force application element is vice or hydraulic pulldown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814793.5A CN105352642B (en) | 2015-11-19 | 2015-11-19 | Foil gauge pressue device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814793.5A CN105352642B (en) | 2015-11-19 | 2015-11-19 | Foil gauge pressue device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105352642A true CN105352642A (en) | 2016-02-24 |
| CN105352642B CN105352642B (en) | 2018-02-09 |
Family
ID=55328650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510814793.5A Active CN105352642B (en) | 2015-11-19 | 2015-11-19 | Foil gauge pressue device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105352642B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426661A (en) * | 2018-02-28 | 2018-08-21 | 北京新能源汽车股份有限公司 | Detection device, detection method and the data processing equipment of driving motor axial direction power |
| 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 |
| CN110749972A (en) * | 2019-12-04 | 2020-02-04 | 上海航天控制技术研究所 | Prism installation device convenient to fine setting |
| CN111238711A (en) * | 2018-11-29 | 2020-06-05 | 中国航发商用航空发动机有限责任公司 | Rotor axial force testing device and testing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU723204A1 (en) * | 1973-03-13 | 1980-03-25 | Центральный Научно-Исследовательский И Проектно-Экспериментальный Институт Организации,Механизации И Технической Помощи Строительству | Arrangement for securing strain gauge sensor on pipeline |
| CN201786710U (en) * | 2010-05-04 | 2011-04-06 | 福建天工电机有限公司 | Placement sheet tooling for bonding pump cover and main pump body of peripheral pump |
| CN201998082U (en) * | 2011-04-01 | 2011-10-05 | 锐马（福建）电气制造有限公司 | Pressurized curing clamp |
| CN104595313A (en) * | 2015-01-21 | 2015-05-06 | 中国工程物理研究院总体工程研究所 | Multi-sheet strain gauge patching clamp of column type force sensor |
| CN204461342U (en) * | 2015-02-09 | 2015-07-08 | 安徽科技学院 | A kind of hot-press solidifying device of strain measurement |
-
2015
- 2015-11-19 CN CN201510814793.5A patent/CN105352642B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU723204A1 (en) * | 1973-03-13 | 1980-03-25 | Центральный Научно-Исследовательский И Проектно-Экспериментальный Институт Организации,Механизации И Технической Помощи Строительству | Arrangement for securing strain gauge sensor on pipeline |
| CN201786710U (en) * | 2010-05-04 | 2011-04-06 | 福建天工电机有限公司 | Placement sheet tooling for bonding pump cover and main pump body of peripheral pump |
| CN201998082U (en) * | 2011-04-01 | 2011-10-05 | 锐马（福建）电气制造有限公司 | Pressurized curing clamp |
| CN104595313A (en) * | 2015-01-21 | 2015-05-06 | 中国工程物理研究院总体工程研究所 | Multi-sheet strain gauge patching clamp of column type force sensor |
| CN204461342U (en) * | 2015-02-09 | 2015-07-08 | 安徽科技学院 | A kind of hot-press solidifying device of strain measurement |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426661A (en) * | 2018-02-28 | 2018-08-21 | 北京新能源汽车股份有限公司 | Detection device, detection method and the data processing equipment of driving motor axial direction power |
| 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 |
| CN111238711A (en) * | 2018-11-29 | 2020-06-05 | 中国航发商用航空发动机有限责任公司 | Rotor axial force testing device and testing method |
| CN111238711B (en) * | 2018-11-29 | 2021-06-22 | 中国航发商用航空发动机有限责任公司 | Rotor axial force testing method |
| CN110749972A (en) * | 2019-12-04 | 2020-02-04 | 上海航天控制技术研究所 | Prism installation device convenient to fine setting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105352642B (en) | 2018-02-09 |
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