CN106644197A - Rolling force sensor of Chinese character wang-shaped structure - Google Patents
Rolling force sensor of Chinese character wang-shaped structure Download PDFInfo
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- CN106644197A CN106644197A CN201610969424.8A CN201610969424A CN106644197A CN 106644197 A CN106644197 A CN 106644197A CN 201610969424 A CN201610969424 A CN 201610969424A CN 106644197 A CN106644197 A CN 106644197A
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- sensor
- rolling force
- main body
- resistance
- elastic body
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- 238000005096 rolling process Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 12
- 239000011888 foil Substances 0.000 claims description 8
- 239000007891 compressed tablet Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a rolling force sensor of a Chinese character wang-shaped structure and relates to a force transducer. The rolling force sensor comprises a bridge circuit composed of an elastic main body and a strain gauge, wherein the profile of the elastic main body is rectangular-shaped, the cross section of the elastic main body is Chinese character wang-shaped, parallel transverse patch holes are arranged at the center of the thickness of the elastic main body at intervals, and at least two stretching strain gauges are attached in each transverse patch hole; all the stretching strain gauges form Wheatstone bridge circuits, one group of resistors in the formed Wheatstone bridges are formed through compression, and another group of resistors are formed through stretching; and upper and lower stress release holes which take the transverse patch holes as a reference and are parallel to the transverse patch holes are arranged symmetrically in the elastic main body at intervals, and upper and lower force transmission guide grooves which take the transverse patch holes as a reference and are vertical to the transverse patch holes are arranged along a longitudinal direction at the two sides of the elastic main body. According to the invention, influences exerted by ground pit unevenness on strain meters in sensor strain holes can be mitigated, original signal output of the sensor is enhanced, the sensor precision is improved, and the capabilities of the sensor in resisting bending stress and rolling force impact are improved.
Description
Technical field
The present invention relates to force snesor, more particularly, to the rolling force sensor of a Seed King font structure.
Background technology
Rolling force sensor is the important component part of steel rolling equipment, in continuous uninterrupted steel rolling operation, in order to ensure
The force value at the running roller two ends on milling train is consistent, need to indicate and controlled rolling power, it usually needs install rolling force sensor to measure
The rolling force value at roll two ends.Plate and strip are rolled especially for high-precision, for the precision of sheet metal thickness and uniform
Degree depends entirely on the control of roll-force force value, therefore most important in high-end sheet material field rolling force sensor.Roll-force is passed
Greatly, from 100～8000t, roll-force can be produced product specification the usual institute's stress value of sensor in rolling process (when stinging steel)
Raw instantaneous peak value, it is therefore higher for the anti-overload ability requirement of rolling force sensor that numerical value can exceed well over product specification range.
Simultaneously installation environment is more severe, under the conditions of usual greasy dirt, high temperature, steam etc. so that rolling force sensor will possess extremely strong
Media-resistant ability.
At present the sensor of the roll-force that steel mill of the country is used is based on import, although rolling force sensor installation environment
Poor but from for live actually used situation, the main cause that rolling force sensor is damaged is that non-uniform load and moment of flexure should
Power is excessive to cause sensor degradation.Because rolling force sensor is face force sensor, and sensor is multigroup parallel via holes knot
Structure, is made up of multiple paster holes and stress relief hole, the multiple strain gauges of uniform patch in paster hole, so as to formed it is multiple should
Become load cell.
Referring to Fig. 1～4 of Figure of description, each mark is represented in Fig. 1～4：P1 is elastic body；P11 is paster hole；
P121 is upper stress release aperture；P122 is lower stress relief hole；P21 roll contacts face；Pressure-bearing surface on the upper equal pressing plates of P22；On P23
Equal pressing plate and sensor contact；Bearing plate and sensor contact under P24；P25 foundation ditch contact surfaces；P3 rolls；Press on P41
Plate；Bearing plate under P42；P5 foundation ditches；R1, R2 are foil gauge compression composition resistance；R3, R4 (R3, R4 are constant resistance) are compensation
Resistance；L1, L2 are patch location；C is the thickness of elastic body P1；A is the thickness of upper equal pressing plate P41；B is lower bearing plate P24
Thickness.
Strain gauge compressive deformation short-range missile causes impedance to diminish in loading process, after all of strain gauge connection in paster hole
Two groups of R1, R2 contracts compensation resistance R3, R4 (R3, R4 are constant resistance) are divided to carry out circuit group bridge.In the case of without external force R1,
R2, R3, R4 resistance is identical, and now signal output terminal voltage is 0.In sensor lower R1, R2 resistance is stressed due to strain gauge
Compress and diminish, R3, R4 resistance is invariable, so will produce voltage in signal output part.We are big by detection voltage
It is little that force value size is drawn by the amplification conversion of instrument, but the voltage signal of this output is weaker, and antijamming capability is weak, while clever
The relatively low precision for also largely effecting on product of sensitivity.Due to such electrical structure, this is just for the flatness in force acting on transducer face
There is higher requirement, it is necessary to ensure more than 70% stress surface while stress, otherwise local force value is excessive can cause strain gauge
There is the phenomenon for rupturing and coming off more than compression zone is allowed, so as to cause the damage of sensor.Because ensureing sensor
Not damaging must have strict requirements as shown in figure 3, this is using most sensor fixing structures for sensor fixing structure,
It is made up of upper equal pressing plate P41, elastic body P1 and lower bearing plate P24.Upper equal pressing plate P41 serves a uniform work of force value
With while the contact surface up and down of upper equal pressing plate P41 is easy to Repair gene again.Lower bearing plate P24 also can be to the foundation ditch P5 of installation
Injustice caused by long-term corrosion plays a cushioning effect.
But in actual use it was found that because the depth dimensions of foundation ditch P5 is limited, upper equal pressing plate P41 is with
The thickness low LCL of bearing plate P24, some are even also much smaller than sensor elastic body P1 thickness.Because foundation ditch P5 is in rolling process
The medium-term and long-term generation that suffers erosion is uneven, rugged.This just produces moment of flexure stress to sensor and upper lower platen.For equal
The size of the module of anti-bending section of even material and thickness square are directly proportional, W=1/6bh2, wherein b is width, and h is that material is thick
Degree.The more big then bending resistance square stress ability of module of anti-bending section is stronger.And now the size of the module of anti-bending section of foundation ditch is exactly W
=1/6b (A2+B2+C2), and now because sensor elastic body P1 thickness C is more than upper equal pressing plate P41 and lower bearing plate P24
Thickness A and B so that moment of flexure stress suffered by sensor is maximum so that producing during sensor degradation, particularly steel rolling
Instantaneous peak value impulsive force.
Based on problem produced by scene, the particularly increasingly increase of foundation ditch P5 seriously corrodeds degree, many products are not using
Spend 1 day and just damage, someone it is also proposed and merge upper equal pressing plate P41 and lower bearing plate P24 to improve bending resistance overall in foundation ditch
Section modulus.Although so module of anti-bending section W=1/6b is [(A+B)2+C2] the bending resistance square stress that thus increases substantially
Ability, but foundation ditch P5 bottom surfaces be corroded produced by hollow under the buffering for not descending bearing plate P24 directly and sensor contacts,
Sensor local can be caused to transship serious and directly result in sensor degradation.
How the problem of presence is overcome, it has also become the problem extremely paid close attention in the industry.
The content of the invention
It is an object of the invention to provide the rolling force sensor of a Seed King font structure, the roll-force biography of king's character form structure
Sensor can relax impact of the foundation ditch out-of-flatness for strain transducer hole internal strain-ga(u)ge unit, dramatically increase the original signal of sensor defeated
Go out, lift the precision of sensor, improve the ability of the ability and anti-roll-force impact of sensor bending resistance square stress.
To realize the object of the invention, the present invention is adopted the following technical scheme that：
The rolling force sensor of king's font structure, including the bridge circuit of elastic body and foil gauge composition；Its feature exists
It is rectangle in the profile of, the elastic body, cross section is in king's font, elastic body thickness center spacer is provided with parallel horizontal
Paster hole, posts at least 2 elongation strain pieces in each horizontal paster hole；All of elongation strain piece constitutes favour generation and steps on electric bridge electricity
Road, one group of resistance that composition favour generation is stepped in bridge circuit is compression composition resistance, and another group of resistance is to stretch composition resistance；Elasticity
Main body interval is arranged with the basis of horizontal paster hole and the upper stress release aperture parallel with horizontal paster hole and lower stress are released
Discharge hole, elastic body both sides are provided with upper power transmission gathering sill on the basis of horizontal paster hole and vertical with horizontal paster hole along longitudinal direction
With lower power transmission gathering sill.
Further：
The profile of the elastic body is rectangle.
The quantity of the elongation strain piece sets according to needed for actual range, and the quantity of the bridge circuit is according to by reality
Border situation is determined.As each horizontal paster hole inwall posts 10 elongation strain pieces, wherein 5 is compressed tablet, another 5 are stretching
Piece.
Compared with the prior art, beneficial effects of the present invention are as follows：
In frame for movement：Stress relief hole is increased, the linear convergent rate of tensile strain meter can be so effectively guaranteed；
Employ the elastic body of king's font, equivalent in install sensor, by need to upper lower platen be incorporated on sensor, shape
Into integral sensor, upper and lower contact surface stress so can be concentrated on the strain gauge in paster hole by upper and lower power transmission gathering sill
On sampled point, this structure is remarkably improved the module of anti-bending section W=1/6b (A+B+C) of elastic body2, improve sensor and resist
The ability of moment of flexure stress, so as to substantially increase the ability of the anti-roll-force impact of sensor.Additionally, king's font agent structure also has
Effect has relaxed impact of the foundation ditch out-of-flatness for strain transducer hole internal strain-ga(u)ge unit.Jing is tested, excellent.
On electrical structure：Due to the sensor signal for being used at present it is weaker, due to increased stress relief hole, and
Using the pattern of double groups of pasters, so in the absence of stress, the R1=R2=R3=R4 of bridge circuit is output as 0；And
In the case of sensor is stressed, R1, R2 diminish because strain gauge compresses, and R3, R4 are stretched by strain gauge and become big, thus
The original signal output of sensor is greatly increased, sampled point improves the precision of sensor after increasing, and due to signal strength signal intensity
Change it is big, the anti-interference raising for also having an obvious degree.
Description of the drawings
Fig. 1 is existing rolling force sensor structural representation.
Fig. 2 is the horizontal A-A cross-sectional schematics of Fig. 1.
Fig. 3 is the bridge circuit schematic diagram of existing rolling force sensor.
Fig. 4 is existing rolling force sensor scheme of installation.
Fig. 5 is embodiment of the present invention structural representation.
Fig. 6 is the horizontal A-A cross-sectional schematics of Fig. 5.
Fig. 7 is the bridge circuit schematic diagram of the embodiment of the present invention.
Fig. 8 is the scheme of installation of the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1～4, referring to the explanation in background technology.R1, R2 that composition favour generation is stepped in bridge circuit is foil gauge pressure
Contracting composition resistance, R3, R4 (R3, R4 are constant resistance) are compensation resistance.R1, R2, R3, R4 resistance phase in the case of without external force
Together, now signal output terminal voltage is 0.Diminished due to the compression of foil gauge in sensor lower R1, R2 resistance that is stressed, and
R3, R4 resistance is invariable, so will produce voltage in signal output part, the amplification for passing through instrument by detection voltage size
Conversion draws force value size.But the voltage signal of this output is weaker, and antijamming capability is weak, while the relatively low also shadow significantly of sensitivity
Ring the precision of product.
Referring to Fig. 5～8, the electric bridge electricity of the rolling force sensor of king's font structure, including elastic body 1 and foil gauge composition
Road；The profile of the elastic body 1 is rectangle, and cross section is in king's font.It is provided with parallel in the thickness center spacer of elastic body 1
10 horizontal paster holes 11, each horizontal inwall of paster hole 11 posts 10 elongation strain pieces, wherein 5 is compressed tablet, another 5
Piece is drawing sheet.All of elongation strain piece 21 constitutes 2 favour generation and steps on bridge circuit.The interval of elastic body 1 is arranged with horizontal stroke
To on the basis of paster hole 11 and the upper stress release aperture 121 parallel with horizontal paster hole 11 and lower stress relief hole 122, elasticity is main
The both sides of body 1 along longitudinal direction be provided with the basis of horizontal paster hole 11 and the upper power transmission gathering sill 131 vertical with horizontal paster hole 11 and
Lower power transmission gathering sill 132.
Foil gauge compressive deformation short-range missile causes impedance to diminish in loading process, and all of foil gauge is divided into two Jing after connection
Group, constitutes favour generation and steps on bridge circuit.R1 ' and R2 ' represent elongation strain sheet resistance, and R3 ', R4 ' represent compression strain sheet resistance, whole
Body constitutes a favour generation and steps on electric bridge.Wherein the strain gauge resistance of L1 positions and value are R1 ', and the strain gauge resistance of L2 positions and value are
The strain gauge resistance and value of R2 ', L3 position is R3 ', and the strain gauge resistance and value of L4 positions are R4 '.(former electrical structure R1 and R2
Represent elongation strain sheet resistance, wherein L1 positions strain gauge resistance and value is R1, L2 positions strain sheet resistance and value are R2, R3 and
R4 be fixed compensation resistance be affixed on during strain bore external force do not deform upon).
During installation, the elastomer 1 of king's font is installed in foundation ditch P5, and the thickness of the elastomer 1 of king's font is equal to A+B+C
(control Fig. 4).
The embodiment of the present invention has following outstanding advantages：
The linear convergent rate of tensile strain meter can be effectively guaranteed in frame for movement.Elastomer because employing king's font
Structure, the upper lower platen of existing installation can be incorporated on sensor, by 4 power transmission gathering sills by upper and lower contact surface stress
Concentrate on the strain gauge sampled point in intermediate patches hole, substantially increase the module of anti-bending section W=1/6b (A+B+C of elastomer
)2The ability of sensor bending resistance square stress is improve, the ability of the anti-roll-force impact of sensor is also substantially increased, while king's word
Type structure has also relaxed impact of the foundation ditch out-of-flatness for strain transducer hole internal strain-ga(u)ge unit.
Claims (3)
1. the bridge circuit of the rolling force sensor of king's font structure, including elastic body and foil gauge composition；Characterized in that,
The profile of the elastic body is rectangle, and cross section is in king's font, and elastic body thickness center spacer is provided with parallel horizontal patch
Film perforation, posts at least 2 elongation strain pieces in each horizontal paster hole；All of elongation strain piece constitutes favour generation and steps on electric bridge electricity
Road, one group of resistance that composition favour generation is stepped in bridge circuit is compression composition resistance, and another group of resistance is to stretch composition resistance；Elasticity
Main body interval is arranged with the basis of horizontal paster hole and the upper stress release aperture parallel with horizontal paster hole and lower stress are released
Discharge hole, elastic body both sides are provided with upper power transmission gathering sill on the basis of horizontal paster hole and vertical with horizontal paster hole along longitudinal direction
With lower power transmission gathering sill.
2. the rolling force sensor of king's font structure as claimed in claim 1, it is characterised in that the profile of the elastic body is
Rectangle.
3. the rolling force sensor of king's font structure as claimed in claim 1, it is characterised in that each horizontal paster hole inwall patch
There are 10 elongation strain pieces, wherein 5 is compressed tablet, another 5 is drawing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969424.8A CN106644197A (en) | 2016-10-28 | 2016-10-28 | Rolling force sensor of Chinese character wang-shaped structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969424.8A CN106644197A (en) | 2016-10-28 | 2016-10-28 | Rolling force sensor of Chinese character wang-shaped structure |
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| Publication Number | Publication Date |
|---|---|
| CN106644197A true CN106644197A (en) | 2017-05-10 |
Family
ID=58821840
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969424.8A Pending CN106644197A (en) | 2016-10-28 | 2016-10-28 | Rolling force sensor of Chinese character wang-shaped structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525615A (en) * | 2017-09-01 | 2017-12-29 | 北京中博力科测控技术有限公司 | A kind of protection device of closed measurement of rolling force sensor |
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|---|---|---|---|---|
| CN201126387Y (en) * | 2007-11-29 | 2008-10-01 | 杭州艾迪精工机械制造有限公司 | Strain steel rolling force test sensor |
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| CN102688903A (en) * | 2012-06-13 | 2012-09-26 | 上海应用技术学院 | Tester for correcting and compensating rolling pressure of steel rolling machine |
| CN203532448U (en) * | 2013-10-21 | 2014-04-09 | 湖南大学 | Strain gage adhesion device of extra-large-measuring-range rolling force strain sensor |
| CN105203237A (en) * | 2015-10-16 | 2015-12-30 | 中航电测仪器股份有限公司 | Strainmeter applicable to rolling force sensor and manufacturing method of strainmeter |
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-
2016
- 2016-10-28 CN CN201610969424.8A patent/CN106644197A/en active Pending
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| CN201795774U (en) * | 2010-06-28 | 2011-04-13 | 胡光良 | Adhesion type resistance strain-gage transducer |
| CN102688903A (en) * | 2012-06-13 | 2012-09-26 | 上海应用技术学院 | Tester for correcting and compensating rolling pressure of steel rolling machine |
| CN203532448U (en) * | 2013-10-21 | 2014-04-09 | 湖南大学 | Strain gage adhesion device of extra-large-measuring-range rolling force strain sensor |
| WO2016086528A1 (en) * | 2014-12-03 | 2016-06-09 | 烟台钧杰衡器有限公司 | Multichannel digitalized intelligent correcting and weighing sensor for unbalanced load error and weighing method therefor |
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| Title |
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Application publication date: 20170510 |