CN106768511A - 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
- Publication number
- CN106768511A CN106768511A CN201611104867.7A CN201611104867A CN106768511A CN 106768511 A CN106768511 A CN 106768511A CN 201611104867 A CN201611104867 A CN 201611104867A CN 106768511 A CN106768511 A CN 106768511A
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- piezoelectric patches
- dynamic force
- base
- wide range
- fixed plate
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- 230000000694 effects Effects 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000012544 monitoring process 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 4
- 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
- 230000005540 biological transmission Effects 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
- 230000003068 static effect Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 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
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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 snesor of high overload wide range, combined by base, backing plate, fixed plate, cover plate, piezoelectric patches, activity template, jackscrew, screw and data collecting system are constituted, piezoelectric patches combination is in the form of two panels electrode slice replaces placement with two panels piezoelectric patches.Activity template is placed in backing plate in gap, base, backing plate and fixed plate is fixed using screw, then piezoelectric patches is combined by activity template with jackscrew being pressed in base groove, finally cover plate 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 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, can be used for HI high impact in heavy construction and move
The monitoring and early warning of state power, are mainly used in sensor field.
Background technology
Mechanics sensor is employed in the heavy constructions such as mine, side slope and roadway support to be carried out to impingement crustal stress
Measurement, is monitored and early warning to the pernicious disasters such as the possible landslide for occurring, rock burst and landslide and accident.Although static(al) sensor
The size of crustal stress can be effectively measured, but but impingement crustal stress can not be responded in real time, and general power is passed
The intensity of sensor cannot meet condition of high ground stress in underground engineering.
Therefore, it is adaptable to which the dynamic pickup of underground engineering has to meet two indices：First, high intensity.Sensor
Residing underground activities environment causes that it must have sufficiently high compression strength to resist crustal stress.Second, wide range.Normally
Construction disturbance can also produce Ground shock waves power, but the dynamic load of these low amplitude values e insufficient to produce dangerous, therefore sensor is necessary
The HI high impact dynamic force for causing danger enough can be measured, the measurement capability for only possessing wide range could be to Ground shock waves disaster high
Carry out early warning.
At present, both at home and abroad there is not yet about such high intensity, the document report of the unidirectional dynamic force snesor of wide range piezoelectric type
Lead.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided 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-scale
The monitoring and early warning of HI high impact dynamic force in engineering.
The invention solves the problems that the technical scheme that its technical problem is used is：A kind of piezoelectricity dynamic force of high overload wide range
Sensor, including：Base, backing plate, fixed plate, cover plate, three groups of piezoelectric patches combinations, three activity templates, three jackscrews, six screws
And data collecting system, piezoelectric patches combination is using first electrode piece, the first piezoelectric patches, second electrode piece, the second piezoelectric patches
Order carries out alternately placement.There are three circular grooves being angularly distributed and six spiral shells being angularly distributed in the upper surface of base
, there are six through holes and three gap in pit, there are six counter sinks and three screwed holes in fixed plate in backing plate；In base
Three gap in three circular grooves and backing plate and three screwed hole position consistencies in fixed plate, six screw threads in base
Six through holes in hole and backing plate and six counter sink position consistencies in fixed plate.The shape of activity template and gap in backing plate
Shape is similar, but undersized；The second electricity in the middle of 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, line outlet that wire is summarized in base through winding displacement groove is simultaneously finally connected with data collecting system.Profit
Base, backing plate, fixed plate are fixed with six screws, then three groups of piezoelectric patches are combined into pressure by three activity templates with three jackscrews
Tightly in three grooves of base, finally cover plate is fixed in fixed plate.
Further, the overall structure of described sensor is hollow cylinder, in order to can make the quiet dynamic of transmission
The anchor cable of load is extended there through.
Further, the thickness of described activity template is slightly below plate thickness, and the thickness of piezoelectric patches combination is slightly above circle
The depth of groove, after ensureing that bolt is tightened, base upper surface is combined with piezoelectric patches and bears pressure jointly, improves sensor
Compression strength, so ensure sensor can in high overload ambient stress normal work.
Further, described piezoelectric patches combination according to being followed successively by first electrode piece, the first piezoelectric patches, second from top to bottom
Electrode slice, the order of the second piezoelectric patches are placed, and the positive pole of the first piezoelectric patches and the second piezoelectric patches is relative, and positive pole is all with the
Two electrode slices are connected, to improve the signal to noise ratio of sensor, wherein, first electrode piece, second electrode piece are all copper materials, with the
One piezoelectric patches, the second piezoelectric patches shape it is identical.
Further, described cover plate is interior hexagonal form because the connected mode between cover plate and fixed plate is screw thread
Connection, has an externally threaded boss below cover plate, can be connected with the screw thread of fixed plate inner surface, and interior hexagonal form is easy to
Tighten screw thread.
Further, the winding displacement groove of described base and other connecting portions can all take encapsulation process, in case sensing
Device influences certainty of measurement in severe engineering-environment because steam is invaded.
Further, the threaded connection part is required in intensity allowed band tightening as far as possible, to ensure sensor
Measurement stability.
Further, described base, backing plate, fixed plate, cover plate, 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.
The present invention has advantages below compared with prior art：
(1) present invention can carry out the measurement of amplitude dynamic load under the conditions of static load high, 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, it is easy to demarcate.
(3) simple structure of the present invention, is to be capable of achieving by traditional machining, it is easy to install, good manufacturability.
(4) application of the invention is strong, can not only be widely used in the heavy constructions such as mine, side slope, roadway support neck
Domain, may be additionally used for blast monitoring, (core) explosive test, the experiment of vehicle impact resistance etc. in field.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structure decomposition figure of the embodiment of the present invention 1；
The schematic diagram that Fig. 3 is combined for the piezoelectric patches of the embodiment of the present invention 1.
Fig. 4 be the present invention in 1500kN static loads by 100kN step dynamic loads when time domain voltage signal.
Reference implication is in figure：1 is base, and 2 is backing plate, and 3 is fixed plate, and 4 is cover plate, and 5 is three groups of piezoelectric patches groups
Close, 6 is three activity templates, and 7 is three jackscrews, and 8 is six screws, and 9 is data collecting system, and 10 is first electrode piece, and 11 are
Second electrode piece, 12 is the first piezoelectric patches, and 13 is the second piezoelectric patches, and 14 is circular groove, and 15 is base threaded hole, and 16 is logical
Hole, 17 is gap, and 18 is fixed plate counter sink, and 19 is fixed plate screwed hole, and 20 is winding displacement groove, and 21 is line outlet.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
As shown in Figure 1, Figure 2 and Figure 3, the present invention is by base 1, backing plate 2, fixed plate 3,4, three groups of pressures of cover plate for basic embodiment
Electric piece combines 5, three screws 8 of jackscrew 7, six of activity template 6, three and data collecting system 9, and piezoelectric patches combination uses first
Electrode slice 10, the first piezoelectric patches 12, second electrode piece 11, the order of the second piezoelectric patches 13 carry out alternately placement.The upper table of base 1
There are three circular grooves 14 being angularly distributed and six base threaded holes 15 being angularly distributed in face, there is six in backing plate 2
, there are six fixed plate counter sinks 18 and three fixed plate screwed holes 19 in fixed plate 3 in individual through hole 16 and three gap 17；Base
Three gap 17 in three circular grooves 14 and backing plate 2 in 1 and the position one of three fixed plate screwed holes 19 in fixed plate 3
Cause, six through holes 16 in six base threaded holes 15 and backing plate 2 in base 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.
During specific installation, three groups of piezoelectric patches are combined 5 and is respectively placed in the circular groove 14 of base 1, by piezoelectric patches group
Each extraction wire on the second electrode piece 11 being sandwiched in 5 in the middle of first piezoelectric patches 12 and the second piezoelectric patches 13 is closed, wire is through winding displacement
Groove 20 is summarized in the line outlet 21 of base 1 and is finally connected with data collecting system；Using six screws 8 by base 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 the screwed hole 19 of fixed plate 3
In three jackscrews 7 by three activity templates 6 be pressed in three circular grooves 14 for being placed on base 1 three piezoelectric patches combination
On 5 first electrode piece 10；Cover plate 4 is fixed in fixed plate 3 using screw thread finally.The present invention is high suitable for heavy construction
The monitoring and early warning of dynamic force are impacted, amplitude dynamic force survey can be carried out in the high overload environment more than piezoelectric patches compression strength
Amount.
During specific test, apply static load to of the invention first, on this basis again to present invention effect dynamic load, such as impact,
Step etc., while using data acquisition device, being acquired to voltage signal from the connection data wire of line outlet of the invention 21.When
During to applying 100kN step dynamic loads on the basis of present invention applying 1500kN static loads, time domain voltage signal such as Fig. 4 institutes of collection
Show.
The overall structure of described sensor is hollow cylinder, and hollow purpose is able to make propped up in underground engineering
The anchor cable of shield is extended there through.
The thickness of described activity template 6 is slightly below the thickness of backing plate 2, and the thickness of piezoelectric patches combination 5 is slightly above circular groove 14
Depth, after ensureing that screw 8 and jackscrew 7 are tightened, the upper surface of base 1 is combined 5 and bears pressure jointly with piezoelectric patches, to improve biography
The compression strength of sensor, so ensure sensor can in high overload ambient stress normal work.
Described piezoelectric patches combination according to being followed successively by first electrode piece 10, the first piezoelectric patches 12, second electrode from top to bottom
Piece 11, the order of the second piezoelectric patches 13 are placed, and the positive pole of the first piezoelectric patches 12 and the second piezoelectric patches 13 is relative, and positive pole is all
It is connected with second electrode piece 11, to improve the signal to noise ratio of sensor, wherein, first electrode piece 10, second electrode piece 11 are all copper
Prepared material, the shape with the first piezoelectric patches 12, the second piezoelectric patches 13 is identical.
Described cover plate 4 is interior hexagonal form because connected mode between cover plate 4 and fixed plate 3 is to be threadedly coupled,
Cover plate 4 has an externally threaded boss below, can be connected with the screw thread of the inner surface of fixed plate 3, and interior hexagonal form is easy to twist
Tight screw thread.
The winding displacement groove 20 and other connecting portions of described base 1 can all take encapsulation process, in case sensor is being disliked
In bad underground environment certainty of measurement is influenceed because steam is invaded.
The threaded connection part is required in intensity allowed band tightening as far as possible, to ensure the measurement stabilization of sensor
Property.
Non-elaborated part of the present invention belongs to techniques well known.
The above, part specific embodiment only of the present invention, but protection scope of the present invention is not limited thereto, and appoints
What those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.
Claims (9)
1. a kind of high overload wide range piezoelectricity dynamic force snesor, described sensor is by base (1), backing plate (2), fixed plate
(3), cover plate (4), three groups of piezoelectric patches combination (5), three activity templates (6), three jackscrews (7), six screws (8) and data are adopted
Collecting system (9) constitute, piezoelectric patches combination (5) using first electrode piece (10), the first piezoelectric patches (12), second electrode piece (11),
The order of the second piezoelectric patches (13) carries out alternately placement, it is characterised in that：The upper surface of base (1) is angularly distributed in the presence of three
Circular groove (14) and six screwed holes being angularly distributed (15), there are six through holes (16) in backing plate (2) and three be open-minded
There are six counter sinks (18) and three screwed holes (19) in mouth (17), fixed plate (3)；Three circular grooves in base (1)
(14) with backing plate (2) in three gap (17) and three screwed hole (19) position consistencies in fixed plate (3), in base (1)
Six screwed holes (15) and backing plate (2) in six through holes (16) and six counter sink (18) positions one in fixed plate (3)
Cause, the shape of activity template (6) is similar to the shape of gap (17) in backing plate (2), but undersized；Three groups of piezoelectric patches are combined
(5) each extraction wire on the electrode slice (11) in the middle of the first piezoelectric patches (12) and the second piezoelectric patches (13) is sandwiched in, wire is through row
Wire casing (20) is summarized in the line outlet (21) of base (1) and is finally connected with data collecting system (9), using six screws (8)
Base (1), backing plate (2), fixed plate (3) is fixed, then with three jackscrews (7) by three activity templates (6) by three groups of piezoelectric patches
Combination (5) is pressed in three grooves (14) of base (1), and finally cover plate (4) is fixed in fixed plate (3).
2. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
The overall structure of sensor is hollow cylinder, and hollow purpose is able to make the anchor cable of the quiet dynamic load of transmission therefrom wear
Cross.
3. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, 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 ensureing that screw (8) and jackscrew (7) are tightened, base (1) upper surface is combined (5) with piezoelectric patches and bears pressure jointly, is improve
The compression strength of sensor, so ensure sensor can in high overload ambient stress normal work.
4. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
Piezoelectric patches combination according to being followed successively by first electrode piece (10), the first piezoelectric patches (12), second electrode piece (11), second from top to bottom
The order of piezoelectric patches (13) is placed, and the positive pole of the first piezoelectric patches (12) and the second piezoelectric patches (13) is relative, and positive pole all with
Second electrode piece (11) is connected, to improve the signal to noise ratio of sensor, wherein, first electrode piece (10), second electrode piece (11) are all
It is copper material, the shape with the first piezoelectric patches (12), the second piezoelectric patches (13) is identical.
5. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
Cover plate (4) for interior hexagonal form because connected mode between cover plate (4) and fixed plate (3) is to be threadedly coupled, under cover plate (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 easy to tighten spiral shell
Line.
6. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
The winding displacement groove (20) of base (1) and other connecting portions can all take encapsulation process, in case sensor is in severe engineering ring
In border certainty of measurement is influenceed because steam is invaded.
7. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：The spiral shell
Line coupling part is required in intensity allowed band tightening as far as possible, to ensure the measurement stability of sensor.
8. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
Base (1), backing plate (2), fixed plate (3), cover plate (4), three activity templates (6), three jackscrews (7), six screws (8) are steel
Prepared material.
9. a kind of high overload wide range according to claim 1 piezoelectricity dynamic force snesor, it is characterised in that：Described
The monitoring and early warning of sensor HI high impact dynamic force suitable for heavy construction, can be in the high overload more than piezoelectric patches compression strength
Amplitude dynamic force measurement is carried out in environment.
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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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| Publication Number | Publication Date |
|---|---|
| CN106768511A true CN106768511A (en) | 2017-05-31 |
| CN106768511B CN106768511B (en) | 2019-04-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838259A (en) * | 2019-02-22 | 2019-06-04 | 北方工业大学 | Photoelectric coupling sensing intelligent support anchor rod system |
| 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 |
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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 |
Cited By (3)
| 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 |
| CN109838259A (en) * | 2019-02-22 | 2019-06-04 | 北方工业大学 | Photoelectric coupling sensing intelligent support anchor rod system |
| 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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| CN106768511B (en) | 2019-04-05 |
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