CN106768511B - A kind of piezoelectricity dynamic force snesor of high overload wide range - Google Patents
A kind of piezoelectricity dynamic force snesor of high overload wide range Download PDFInfo
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- CN106768511B CN106768511B CN201611104867.7A CN201611104867A CN106768511B CN 106768511 B CN106768511 B CN 106768511B CN 201611104867 A CN201611104867 A CN 201611104867A CN 106768511 B CN106768511 B CN 106768511B
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- piezoelectric patches
- pedestal
- fixed plate
- dynamic force
- wide range
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000013480 data collection Methods 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
Abstract
The invention discloses a kind of piezoelectricity dynamic force snesors of high overload wide range, combined by pedestal, backing plate, fixed plate, cover board, piezoelectric patches, activity template, jackscrew, screw and data collection system form, piezoelectric patches combination using two panels electrode slice replaces with two panels piezoelectric patches placement form.Activity template is placed in backing plate in gap, is fixed pedestal, backing plate and fixed plate using screw, then piezoelectric patches combination is pressed in base groove by activity template with jackscrew, finally cover board is fixed in fixed plate.The monitoring and early warning of present invention HI high impact dynamic force suitable for heavy construction can carry out amplitude dynamic force measurement in the high overload environment for being more than piezoelectric patches compression strength, and intensity is high, and range is big, and dynamic characteristic is good.
Description
Technical field
The present invention relates to a kind of piezoelectricity dynamic force snesor of high overload wide range, it is dynamic to can be used for HI high impact in heavy construction
The monitoring and early warning of state power, are mainly used in sensor field.
Background technique
Mechanics sensor is employed in the heavy constructions such as mine, side slope and roadway support to carry out impingement crustal stress
Measurement, to pernicious disasters such as landslide, rock burst and the landslides that may occur and accident is monitored and early warning.Although static(al) sensor
The size of crustal stress can be effectively measured, but impingement crustal stress cannot be responded in real time, and general power passes
The intensity of sensor is unable to satisfy condition of high ground stress in underground engineering.
Therefore, have to meet two indices suitable for the dynamic pickup of underground engineering: first, it is high-intensitive.Sensor
Locating underground activities environment makes it that must have sufficiently high compression strength to resist crustal stress.Second, wide range.Normally
Construction disturbance can also generate Ground shock waves power, but the dynamic load of these low amplitude values is not sufficient to generate danger, therefore sensor is necessary
It can measure and cause dangerous HI high impact dynamic force enough, the measurement capability for only having wide range could be to high Ground shock waves disaster
Carry out early warning.
Currently, both at home and abroad there is not yet in relation to such high-intensitive, the unidirectional dynamic force snesor of wide range piezoelectric type document report
It leads.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of pressure of high overload wide range
Electro dynamic force snesor, the sensor can measure amplitude dynamic force in high stress environment, and dynamic characteristic is good, can be used for large size
The monitoring and early warning of HI high impact dynamic force in engineering.
The invention solves technical solutions used by its technical problem to be: a kind of piezoelectricity dynamic force of high overload wide range
Sensor, comprising: pedestal, backing plate, fixed plate, cover board, three groups of piezoelectric patches combinations, three activity templates, three jackscrews, six screws
And data collection system, piezoelectric patches combination is using first electrode sheet, the first piezoelectric patches, second electrode sheet, second piezoelectric patches
Sequence carries out alternately placement.The circular groove and six spiral shells being angularly distributed that the upper surface of pedestal is angularly distributed there are three
Pit, there are six through-holes and three gap in backing plate, there are six counter sinks and three threaded holes in fixed plate；In pedestal
Three gap in three circular grooves and backing plate and three threaded hole position consistencies in fixed plate, six screw threads in pedestal
Six through-holes in hole and backing plate and six counter sink position consistencies in fixed plate.Gap in the shape and backing plate of activity template
Shape is similar, but undersized；The second electricity among the first piezoelectric patches and the second piezoelectric patches will be sandwiched in three groups of piezoelectric patches combinations
Each extraction wire on pole piece, conducting wire are summarized in the line outlet in pedestal through winding displacement groove and are finally connected with data collection system.Benefit
Pedestal, backing plate, fixed plate are fixed with six screws, then pass through three activity templates for three groups of piezoelectric patches group combined pressures with three jackscrews
Tightly in three grooves of pedestal, finally cover board is fixed in fixed plate.
Further, the overall structure of the sensor is hollow cylinder, in order to can make to transmit quiet dynamic
The anchor cable of load extends there through.
Further, the thickness of the activity template is slightly below plate thickness, and the thickness of piezoelectric patches combination is slightly above circle
The depth of groove, after guaranteeing that bolt is tightened, base upper surface combines common receiving pressure with piezoelectric patches, improves sensor
Compression strength, and then guarantee that sensor can work normally in high overload ambient stress.
Further, the described piezoelectric patches combination according to being followed successively by first electrode sheet, the first piezoelectric patches, second from top to bottom
Electrode slice, the second piezoelectric patches sequence placed, the anode of the first piezoelectric patches and the second piezoelectric patches is opposite, and anode is all with the
Two electrode slices are connected, to improve the signal-to-noise ratio of sensor, wherein first electrode sheet, second electrode sheet are all copper materials, with the
One piezoelectric patches, the shape of the second piezoelectric patches are identical.
Further, it is because the connection type between cover board and fixed plate is screw thread that the cover board, which is interior hexagonal form,
It connects, there is an externally threaded boss below cover board, can be connected with the screw thread of fixed plate inner surface, interior hexagonal form is convenient for
Tighten screw thread.
Further, the winding displacement groove of the pedestal and other connecting portions can all take encapsulation process, to prevent sensing
Device influences measurement accuracy because steam is invaded in severe engineering-environment.
Further, the threaded connection part requires to tighten as far as possible in intensity allowed band, to guarantee sensor
Measurement stability.
Further, the pedestal, backing plate, fixed plate, cover board, three activity templates, three jackscrews, six screws are
Steel material.
Further, the monitoring and early warning of present invention HI high impact dynamic force suitable for heavy construction can be more than piezoelectricity
Amplitude dynamic force measurement is carried out in the high overload environment of piece compression strength.
Compared with the prior art, the present invention has the following advantages:
(1) present invention can carry out the measurement of amplitude dynamic load under the conditions of high static load, and intensity is high, and range is big, and dynamic is special
Property is good；
(2) present invention is piezoelectric transducer, and stability is high, and sensitivity is good, is easy to demarcate.
(3) the configuration of the present invention is simple can be realized by traditional machining, be easily installed, good manufacturability.
(4) application of the invention is strong, not only can be widely applied to the heavy constructions such as mine, side slope, roadway support neck
Domain may be additionally used in the fields such as blast monitoring, (core) explosive test, the test of vehicle impact resistance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural exploded view of the embodiment of the present invention 1；
Fig. 3 is the schematic diagram that the piezoelectric patches of the embodiment of the present invention 1 combines.
Fig. 4 be the present invention in 1500kN static load by 100kN step dynamic load when time domain voltage signal.
Appended drawing reference meaning in figure are as follows: 1 is pedestal, and 2 be backing plate, and 3 be fixed plate, and 4 be cover board, and 5 be three groups of piezoelectric patches groups
It closes, 6 be three activity templates, and 7 be three jackscrews, and 8 be six screws, and 9 be data collection system, and 10 be first electrode sheet, and 11 are
Second electrode sheet, 12 be the first piezoelectric patches, and 13 be the second piezoelectric patches, and 14 be circular groove, and 15 be base threaded hole, and 16 be logical
Hole, 17 be gap, and 18 be fixed plate counter sink, and 19 be fixed plate threaded hole, and 20 be winding displacement groove, and 21 be line outlet.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
Basic embodiment is as shown in Figure 1, Figure 2 and Figure 3, and the present invention is by 4, three groups of pedestal 1, backing plate 2, fixed plate 3, cover board pressures
Electric piece combines 5, three screws 8 of jackscrew 7, six of activity template 6, three and data collection system 9, and piezoelectric patches combination uses first
Electrode slice 10, the first piezoelectric patches 12, second electrode sheet 11, the sequence of the second piezoelectric patches 13 carry out alternately placement.The upper table of pedestal 1
Face is there are the base threaded hole 15 that three circular grooves being angularly distributed 14 and six are angularly distributed, and there are six in backing plate 2
A through-hole 16 and three gap 17, there are six fixed plate counter sinks 18 and three fixed plate threaded holes 19 in fixed plate 3；Pedestal
Three gap 17 in three circular grooves 14 and backing plate 2 in 1 and three fixed plate threaded holes, 19 position one in fixed plate 3
It causes, six through-holes 16 in six base threaded holes 15 and backing plate 2 in pedestal 1 and six fixed plate counter sinks in fixed plate
18 position consistencies.The shape of activity template 6 is similar to the shape of gap 17 in backing plate 2, but undersized.
When specific installation, three groups of piezoelectric patches combinations 5 are respectively placed in the circular groove 14 of pedestal 1, by piezoelectric patches group
Each extraction wire in the second electrode sheet 11 being sandwiched among the first piezoelectric patches 12 and the second piezoelectric patches 13 in 5 is closed, conducting wire is through winding displacement
Slot 20 is summarized in the line outlet 21 of pedestal 1 and is finally connected with data collection system；Using six screws 8 by pedestal 1, backing plate 2,
Fixed plate 3 is tightly fastened, and three activity templates 6 are filled in three gap 17 of backing plate 2, using being screwed in 3 threaded hole 19 of fixed plate
In three jackscrews 7 by three activity templates 6 be pressed in three piezoelectric patches in three circular grooves 14 for being placed on pedestal 1 combination
In 5 first electrode sheet 10；Finally cover board 4 is fixed in fixed plate 3 using screw thread.The present invention is high suitable for heavy construction
The monitoring and early warning of dynamic force are impacted, the survey of amplitude dynamic force can be carried out in the high overload environment for being more than piezoelectric patches compression strength
Amount.
When specific test, apply static load to of the invention first, dynamic load is acted on to the present invention again on this basis, such as impact,
Step etc., while data acquisition device is utilized, data line is connected from line outlet 21 of the invention, and voltage signal is acquired.When
When to applying 100kN step dynamic load on the basis of present invention application 1500kN static load, time domain voltage signal such as Fig. 4 institute of acquisition
Show.
The overall structure of the sensor is hollow cylinder, and hollow purpose is to be able to make to prop up in underground engineering
The anchor cable of shield extends there through.
The thickness of the activity template 6 is slightly below 2 thickness of backing plate, and the thickness of piezoelectric patches combination 5 is slightly above circular groove 14
Depth, after guaranteeing that screw 8 and jackscrew 7 are tightened, 1 upper surface of pedestal combined with piezoelectric patches 5 it is common bear pressure, passed with improving
The compression strength of sensor, and then guarantee that sensor can work normally in high overload ambient stress.
The described piezoelectric patches combination according to being followed successively by first electrode sheet 10, the first piezoelectric patches 12, second electrode from top to bottom
Piece 11, the second piezoelectric patches 13 sequence placed, the anode of the first piezoelectric patches 12 and the second piezoelectric patches 13 is opposite, and anode is all
It is connected with second electrode sheet 11, to improve the signal-to-noise ratio of sensor, wherein first electrode sheet 10, second electrode sheet 11 are all copper
Prepared material is identical as the shape of the first piezoelectric patches 12, the second piezoelectric patches 13.
It is threaded connection that the cover board 4, which is because of the connection type between cover board 4 and fixed plate 3 for interior hexagonal form,
Cover board 4 has an externally threaded boss below, can be connected with the screw thread of 3 inner surface of fixed plate, and interior hexagonal form is convenient for stubborn
Tight screw thread.
The winding displacement groove 20 of the pedestal 1 and other connecting portions can all take encapsulation process, dislike to prevent sensor
Measurement accuracy is influenced because steam is invaded in bad underground environment.
The threaded connection part requires to tighten as far as possible in intensity allowed band, to guarantee that the measurement of sensor is stablized
Property.
Non-elaborated part of the present invention belongs to techniques well known.
The above, part specific embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, appoints
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover by what those skilled in the art
Within protection scope of the present invention.
Claims (8)
1. a kind of piezoelectricity dynamic force snesor of high overload wide range, the sensor is by pedestal (1), backing plate (2), fixed plate
(3), cover board (4), three groups of piezoelectric patches combinations (5), three activity templates (6), three jackscrews (7), six screws (8) and data are adopted
Collecting system (9) composition, piezoelectric patches combine (5) using first electrode sheet (10), the first piezoelectric patches (12), second electrode sheet (11),
The sequence of second piezoelectric patches (13) carries out alternately placement, it is characterised in that: there are three for the upper surface of pedestal (1) to be angularly distributed
Circular groove (14) and six threaded holes (15) being angularly distributed, there are six through-holes (16) in backing plate (2) and three be open-minded
Mouth (17), fixed plate (3) is middle, and there are six counter sinks (18) and three threaded holes (19)；Three circular grooves in pedestal (1)
(14) with three gap (17) in backing plate (2) and three threaded hole (19) position consistencies in fixed plate (3), in pedestal (1)
Six threaded holes (15) and backing plate (2) in six through-holes (16) and six counter sink (18) positions one in fixed plate (3)
It causes, the shape of activity template (6) is similar to the shape of gap (17) in backing plate (2), but undersized；It combines three groups of piezoelectric patches
(5) each extraction wire on the electrode slice (11) among the first piezoelectric patches (12) and the second piezoelectric patches (13) is sandwiched in, conducting wire is through arranging
Wire casing (20) is summarized in the line outlet (21) of pedestal (1) and is finally connected with data collection system (9), utilizes six screws (8)
Pedestal (1), backing plate (2), fixed plate (3) is fixed, then pass through three activity templates (6) for three groups of piezoelectric patches with three jackscrews (7)
Combination (5) is pressed in three grooves (14) of pedestal (1), and finally cover board (4) is fixed on fixed plate (3).
2. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
The overall structure of sensor is hollow cylinder, and the anchor cable that hollow purpose is to be able to make to transmit quiet dynamic load is therefrom worn
It crosses.
3. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
The thickness of activity template (6) is slightly below backing plate (2) thickness, and the thickness of piezoelectric patches combination (5) is slightly above the depth of circular groove (14),
After guaranteeing that screw (8) and jackscrew (7) are tightened, pedestal (1) upper surface combines (5) with piezoelectric patches and bears pressure jointly, improves
The compression strength of sensor, and then guarantee that sensor can work normally in high overload ambient stress.
4. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
Piezoelectric patches combination according to being followed successively by first electrode sheet (10), the first piezoelectric patches (12), second electrode sheet (11), second from top to bottom
The sequence of piezoelectric patches (13) is placed, and the anode of the first piezoelectric patches (12) and the second piezoelectric patches (13) is opposite, and anode all with
Second electrode sheet (11) is connected, to improve the signal-to-noise ratio of sensor, wherein first electrode sheet (10), second electrode sheet (11) are all
It is copper material, it is identical as the shape of the first piezoelectric patches (12), the second piezoelectric patches (13).
5. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
Cover board (4) is that interior hexagonal form is because the connection type between cover board (4) and fixed plate (3) is to be threadedly coupled, under cover board (4)
Face has an externally threaded boss, can be connected with the screw thread of fixed plate (3) inner surface, and interior hexagonal form is convenient for tightening spiral shell
Line.
6. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
The winding displacement groove (20) of pedestal (1) and other connecting portions can all take encapsulation process, to prevent sensor in severe engineering ring
Measurement accuracy is influenced because steam is invaded in border.
7. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: the spiral shell
Line coupling part requires to tighten as far as possible in intensity allowed band, to guarantee the measurement stability of sensor.
8. a kind of piezoelectricity dynamic force snesor of high overload wide range according to claim 1, it is characterised in that: described
Pedestal (1), backing plate (2), fixed plate (3), cover board (4), three activity templates (6), three jackscrews (7), six screws (8) are steel
Prepared material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611104867.7A CN106768511B (en) | 2016-12-05 | 2016-12-05 | A kind of piezoelectricity dynamic force snesor of high overload wide range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611104867.7A CN106768511B (en) | 2016-12-05 | 2016-12-05 | A kind of piezoelectricity dynamic force snesor of high overload wide range |
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| CN106768511A CN106768511A (en) | 2017-05-31 |
| CN106768511B true CN106768511B (en) | 2019-04-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366188A (en) * | 2018-12-26 | 2020-07-03 | 北京信息科技大学 | Data acquisition and storage device for dynamic environment force measurement field |
| CN109838259B (en) * | 2019-02-22 | 2021-04-02 | 北方工业大学 | Photoelectric coupling sensing intelligent support anchor rod system |
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|---|---|---|---|---|
| CN1885584A (en) * | 2005-06-22 | 2006-12-27 | 昆明凯旋利科技有限公司 | Pressure perceptive type non-contact switch |
| CN201994343U (en) * | 2011-03-17 | 2011-09-28 | 金陵科技学院 | Piezoelectric element |
| CN102564656A (en) * | 2012-02-20 | 2012-07-11 | 大连理工大学 | Piezoelectric quartz crystal group for measuring multi-dimensional force, and manufacturing method for piezoelectric quartz crystal group |
| CN205038361U (en) * | 2015-10-07 | 2016-02-17 | 谭成忠 | Piezoelectric type gravity appearance |
| JP2016156669A (en) * | 2015-02-24 | 2016-09-01 | セイコーエプソン株式会社 | Sensor element, force detection device and robot |
-
2016
- 2016-12-05 CN CN201611104867.7A patent/CN106768511B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885584A (en) * | 2005-06-22 | 2006-12-27 | 昆明凯旋利科技有限公司 | Pressure perceptive type non-contact switch |
| CN201994343U (en) * | 2011-03-17 | 2011-09-28 | 金陵科技学院 | Piezoelectric element |
| CN102564656A (en) * | 2012-02-20 | 2012-07-11 | 大连理工大学 | Piezoelectric quartz crystal group for measuring multi-dimensional force, and manufacturing method for piezoelectric quartz crystal group |
| JP2016156669A (en) * | 2015-02-24 | 2016-09-01 | セイコーエプソン株式会社 | Sensor element, force detection device and robot |
| CN205038361U (en) * | 2015-10-07 | 2016-02-17 | 谭成忠 | Piezoelectric type gravity appearance |
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