CN106404527A - Double-range force sensor for dynamic impact testing - Google Patents
Double-range force sensor for dynamic impact testing Download PDFInfo
- Publication number
- CN106404527A CN106404527A CN201611026531.3A CN201611026531A CN106404527A CN 106404527 A CN106404527 A CN 106404527A CN 201611026531 A CN201611026531 A CN 201611026531A CN 106404527 A CN106404527 A CN 106404527A
- Authority
- CN
- China
- Prior art keywords
- load cell
- double
- force snesor
- range force
- load
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/066—Special adaptations of indicating or recording means with electrical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
Abstract
The invention discloses a double-range force sensor for dynamic impact testing. The double-range force sensor comprises a bearing part, a loading part located above the bearing part, a first force measuring unit, a second force measuring unit and strain gages, the first force measuring unit and the second force measuring unit are arranged between the bearing part and the unloading part, and the strain gages are arranged on the first force measuring unit and the second force measuring unit respectively. The upper end and the lower end of the first force measuring unit are arranged on the bearing part and the loading part respectively in an abutting mode, the lower end of the second force measuring unit is arranged on the bearing part in an abutting mode, and a clearance is arranged between the other end of the second force measuring unit and the loading part. The double-range force sensor is high in inherent frequency and can be suitable for dynamic impact tests. Meanwhile, the device can be used for measuring wide-range loads in the dynamic impact tests and is high in measurement precision. The device is simple and compact in structure.
Description
Technical field
Present invention relates particularly to material mechanical performance test and characterization technique field are and in particular to a kind of be used for dynamic impulsion
The double-range force snesor of test.
Background technology
A large amount of foamed materials are employed on automobile, such as the poly- ammonia within the polyethylene of automotive front end bumper, seat
Ester foam.When automobile is with pedestrian collision, foam bumper can effectively reduce the injury to pedestrian, so research impact
In test, the mechanical characteristic of foamed material is particularly important.Foamed material in automotive vehicles applications mainly pressurized it is therefore desirable to open
Exhibition foam compresses Mechanics Performance Testing, it is very little that foamed material its mechanical characteristic in compression process shows as initial force value
And rise slow, after having crossed platform area when decrement reaches 85% about, foam is gradually compacted, and force value starts increasing drastically
Greatly.Only using the force snesor of a wide range generally in the impact test of foamed material, its shortcoming is cannot to ensure initially
Force value very little and rise slow platform area certainty of measurement.
Chinese patent application document（Application number：CN 103017943 A）Disclose a kind of double-dial pressure sensing machine
Structure.This patent is provided with the pressure sensor of two amounts journey, to protect the sensor of small-range using the device of spring and sleeve.
Due to this invention adopt spring supporting small-range sensor, reduce the solid state frequency of whole pressure sensing mechanism it is impossible to
For dynamic impulsion testing experiment.
Content of the invention
The technical problem to be solved is for problem of the prior art, provides one kind to can be used in dynamic impulsion
Test and the high double-range force snesor of certainty of measurement.
For reaching above-mentioned purpose, the technical solution used in the present invention is：
A kind of double-range force snesor for dynamic impulsion test, including bearing part, the loading above described bearing part
Part, the first load cell being disposed in parallel between described bearing part and described loaded member and the second load cell, it is respectively provided with
Foil gauge on described first load cell and described second load cell, the upper and lower ends of described first load cell are respectively
Support and be located on described bearing part and described loaded member, the lower end of described second load cell is supported and is located on described bearing part, described
There is between the other end of the second load cell and described loaded member a gap.
Preferably, described first load cell and described second load cell are all vertically extending, described first survey
Power unit is identical in the cross-sectional area on loading direction with described second load cell.
Preferably, described first load cell and described second load cell are all vertically extending, described first survey
Power unit is different in the cross-sectional area on loading direction with described second load cell, and described second load cell
Cross-sectional area be more than described first load cell cross-sectional area.
Preferably, described first load cell is provided with one or more, and described second load cell is provided with one or more.
Preferably, described loaded member includes load plate and is fixedly installed on the First Transition part of described load plate lower end, institute
The upper end stating the first load cell is supported and is located on the lower surface of described First Transition part, the upper end of described second load cell and institute
There is between the lower surface stating First Transition part described gap, described First Transition part is gradually reduced in section from the top down.
Further, described First Transition part is in the taper type structure that section is gradually reduced from the top down.
Preferably, described bearing part includes loading plate and is fixedly installed on the second transition piece of described loading plate upper end, institute
The lower end stating the first load cell and described second load cell all on the upper surface being located at described second transition piece, described
Section is gradually reduced two transition pieces from bottom to top.
Further, described second transition piece is in the taper type structure that section is gradually reduced from bottom to top.
Preferably, described bearing part, described loaded member, described first load cell, described second load cell are by gold
Belong to material to make.
Preferably, described bearing part, described loaded member, described first load cell, described second load cell are by monoblock
Steel ingot is made by numerical control machining center and linear cutter.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages：The present invention is used for
The intrinsic frequency of the double-range force snesor of dynamic impulsion test is high, is applicable to dynamic impact test；And this device can
Load in a big way in measurement dynamic impact test, and certainty of measurement is high；This apparatus structure is simple, compact simultaneously.
Brief description
Accompanying drawing 1 is the stereogram of the double-range force snesor for dynamic impulsion test of the present invention；
Accompanying drawing 2 is the front view of the double-range force snesor for dynamic impulsion test of the present invention；
Accompanying drawing 3 is partial enlarged drawing at A in accompanying drawing 2；
Accompanying drawing 4 is the side view of the double-range force snesor for dynamic impulsion test of the present invention.
Wherein：1st, bearing part；11st, loading plate；12nd, the second transition piece；2nd, loaded member；21st, load plate；22nd, First Transition
Part；3rd, load cell；31st, the first load cell；32nd, the second load cell；4th, foil gauge.
Specific embodiment
Come with specific embodiment below in conjunction with the accompanying drawings technical scheme is further elaborated.
As shown in Figure 1 to 4, the double-range force snesor for dynamic impulsion test of the present invention includes bearing part 1, adds
Holder 2, load cell 3 and the foil gauge 4 being arranged on load cell 3.
Loaded member 2 is located at the top of bearing part 1, and for imposed load, load cell 3 is arranged on bearing part 1 and loaded member 2
Between, measuring bridge is formed by the foil gauge 4 being pasted onto on load cell 3, is applied to the actual load in loaded member 2 for measurement
The size of lotus.
Load cell 3 includes the first load cell 31 and the second load cell 32, and foil gauge 4 is sticked respectively in the first dynamometry
On unit 31 and the second load cell 32, the foil gauge 4 that is pasted onto on the first load cell 31 be pasted onto the second load cell
Foil gauge on 32 forms a measuring bridge respectively, and the first load cell 31 and the second load cell 32 all prolong along the vertical direction
Stretch, and be disposed in parallel between bearing part 1 and loaded member 2.Specifically, the upper and lower ends of the first load cell 31 are supported respectively and are located at
On bearing part 1 and loaded member 2, the lower end of the second load cell 32 is supported and is located on bearing part 1, has between its upper end and loaded member 2
There is a gap delta.
First load cell 31 can be identical in the cross-sectional area on loading direction with the second load cell 32,
Can be different, when the cross-sectional area of the two is not likewise it is preferred that the cross-sectional area of the second load cell 32 is more than the first load cell
31 cross-sectional area.
First load cell 31 is provided with one or more, and the second load cell 32 also can be provided with one or more.
Bearing part 1 includes loading plate 11 and is fixedly installed on the second transition piece 12 of the upper end of loading plate 11, the first dynamometry
The lower end of unit 31 and the second load cell 32 is all on the upper surface being located at the second transition piece 12.
Loaded member 2 includes load plate 21 and is fixedly installed on the First Transition part 22 of the lower end of load plate 21, the first dynamometry
The upper end of unit 31 is supported and is located on the lower surface of First Transition part 22, the upper end of the second load cell 32 and First Transition part 22
There is between lower surface above-mentioned gap delta.
Loading plate 11 and load plate 21 all in circular plate type structure, for reduce test process in due to bearing part 1 and loaded member 2
With respect to the impact to measurement result for the abrupt change of cross-section of load cell 3, cross-sectional area gradually subtracts First Transition part 22 from the top down
Little, cross-sectional area is gradually reduced the second transition piece 12 from bottom to top, so, can force signal from First Transition part 22 and the second mistake
Cross and seamlessly transit on part 12, to improve measuring accuracy.
In order to ensure the rigidity of this double-range force snesor, bearing part 1, loaded member 2 and load cell 3 are led to by monoblock steel ingot
Cross numerical control machining center and linear cutter shaping.Certainly, bearing part 1, loaded member 2 and load cell 3 also can be by unlike materials
Metal make respectively after be bolted together.
Bearing part 1, loaded member 2 and load cell 3 can be made by metal materials such as steel, aluminium, titaniums.
The operation principle of the double-range force snesor of the present invention is as follows：
First, the gap delta between the upper end according to the second load cell 32 and the lower surface of First Transition part 22 calculates applying
Reference load F1 on bearing part 2.
Apply certain load F to bearing part 2, if load F applying is not more than reference load F1, load F is by loading
Plate 11 is delivered to First Transition part 12, is delivered to the first load cell 31 along First Transition part 12, and along the second transition piece
22 are delivered to loading plate 21.After first load cell 31 is subject to the active force of load F, there is elasticity of compression deformation, now paste
The measuring bridge of foil gauge 4 composition on the first load cell 31 just has output, can measure this by connecting deformeter
Electricity, is multiplied by the numerical value that coefficient obtains applied load F.Elastic deformation amount due to the first load cell 31 is less than gap
δ value, double-range force snesor now is equivalent to the force snesor being formed little cross-sectional area small-range by the first load cell 31.
If load F applying is more than reference load F1, load F is delivered to First Transition part 12 by load plate 11 first,
It is delivered to the first load cell 31 along First Transition part 12, and be delivered to loading plate 21 along the second transition piece 22.First survey
After power unit 31 is subject to the active force of load F, there is elasticity of compression deformation, and this compress variation reaches gap delta, so that
Obtain the lower surface of First Transition part 22 and the upper-end contact of the second load cell 32, now load F is just along First Transition part 12
It is simultaneously communicating on the first load cell 31 and the second load cell 32, be finally delivered to loading plate further along the second transition piece 22
On 21.Now the first load cell 31 and the second load cell 32, all by the active force of load F, all occur the elasticity of compression to become
Shape, be now pasted onto on the first load cell 31 foil gauge 4 composition measuring bridge, be pasted onto on the second load cell 32
The measuring bridge of foil gauge 4 composition all produces output.Load measured by two groups of measuring bridges is added and obtains being applied
The numerical value of load F.Double-range force snesor now is equivalent to and is constituted by the first load cell 31 and the second load cell 32
The force snesor of one big cross-sectional area wide range.
Therefore, with this double-range force sensor measuring from 0 to F（F>F1）Load when, when load F be not more than F1 less,
This double-range force snesor only first load cell 31 works, that is, be equivalent to the force snesor of small-range, can use this small-range
Force snesor test less load, with force value initial during guarantee test very little and rise slow platform area measurement essence
Degree；After load F is more than F1, the first load cell 31 and the second load cell 32 collective effect in this double-range force snesor,
Be equivalent to the force snesor of wide range, the accurate measurement of force snesor that can use this wide range is compared with big load.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art's energy
Solution present disclosure much of that is simultaneously implemented according to this, can not be limited the scope of the invention with this.All spiritual according to the present invention
Equivalence changes or modification that essence is made, all should be included within the scope of the present invention.
Claims (10)
1. a kind of double-range force snesor for dynamic impulsion test it is characterised in that：Including bearing part, it is located at described carrying
Loaded member above part, the first load cell being disposed in parallel between described bearing part and described loaded member and the second dynamometry list
Unit, the foil gauge being separately positioned on described first load cell and described second load cell, described first load cell
Upper and lower ends are supported respectively and are located on described bearing part and described loaded member, the lower end of described second load cell support be located at described in hold
In holder, between the other end of described second load cell and described loaded member, there is a gap.
2. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described first
Load cell and described second load cell are all vertically extending, described first load cell and described second load cell
Identical in the cross-sectional area on loading direction.
3. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described first
Load cell and described second load cell are all vertically extending, described first load cell and described second load cell
Different in the cross-sectional area on loading direction, and the cross-sectional area of described second load cell is more than described first survey
The cross-sectional area of power unit.
4. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described first
Load cell is provided with one or more, and described second load cell is provided with one or more.
5. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described loading
Part includes load plate and is fixedly installed on the First Transition part of described load plate lower end, and the upper end of described first load cell is supported and set
On the lower surface of described First Transition part, between the lower surface of the upper end of described second load cell and described First Transition part
There is described gap, described First Transition part is gradually reduced in section from the top down.
6. the double-range force snesor for dynamic impulsion test according to claim 5 it is characterised in that：Described first
Transition piece is in the taper type structure that section is gradually reduced from the top down.
7. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described carrying
Part includes loading plate and is fixedly installed on the second transition piece of described loading plate upper end, described first load cell and described second
All on the upper surface being located at described second transition piece, section is gradually from bottom to top for described second transition piece for the lower end of load cell
Reduce.
8. the double-range force snesor for dynamic impulsion test according to claim 5 it is characterised in that：Described second
Transition piece is in the taper type structure that section is gradually reduced from bottom to top.
9. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described carrying
Part, described loaded member, described first load cell, described second load cell are made by metal material.
10. the double-range force snesor for dynamic impulsion test according to claim 1 it is characterised in that：Described hold
Holder, described loaded member, described first load cell, described second load cell by monoblock steel ingot pass through numerical control machining center and
Linear cutter is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611026531.3A CN106404527A (en) | 2016-11-22 | 2016-11-22 | Double-range force sensor for dynamic impact testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611026531.3A CN106404527A (en) | 2016-11-22 | 2016-11-22 | Double-range force sensor for dynamic impact testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404527A true CN106404527A (en) | 2017-02-15 |
Family
ID=58068736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611026531.3A Pending CN106404527A (en) | 2016-11-22 | 2016-11-22 | Double-range force sensor for dynamic impact testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404527A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084877A (en) * | 2017-06-15 | 2017-08-22 | 中国水利水电科学研究院 | Spring transfer pressure detection means |
| CN108414060A (en) * | 2018-02-12 | 2018-08-17 | 上海寺冈电子有限公司 | Double weighing electronic scale |
| CN111122038A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection device and method and engineering machinery |
| WO2021128797A1 (en) * | 2019-12-27 | 2021-07-01 | 中联重科股份有限公司 | Sensor assembly, acting force measurement device and engineering machinery |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108400A (en) * | 1984-10-17 | 1986-08-13 | 东京电气株式会社 | Multi-range load cell weighing instrument |
| US4706507A (en) * | 1986-02-21 | 1987-11-17 | Horiba Instruments Incorporated | Torque measuring device having dual range load cells |
| CN2086900U (en) * | 1990-12-24 | 1991-10-16 | 北京理工大学 | Sensor for double-range dynamometer |
| CN101666671A (en) * | 2008-09-05 | 2010-03-10 | 宁波柯力电气制造有限公司 | Double range weighing sensor |
| CN103604537A (en) * | 2013-11-25 | 2014-02-26 | 清华大学苏州汽车研究院（相城） | Method for designing force measurement link in high-speed dynamic test |
| CN205317440U (en) * | 2016-01-14 | 2016-06-15 | 苏州达美特汽车测试技术有限公司 | A prevent overload test device for spare part dynamic impact |
| CN105937998A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Improved double-precision electronic scale |
| CN105973439A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Improved dual-precision electronic scale |
| CN106017659A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Double-precision electronic scale |
| CN106017645A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Safety-type double-precision electronic scale |
| CN106124020A (en) * | 2016-01-20 | 2016-11-16 | 申俊 | A kind of double essence electronic scale |
| CN206593964U (en) * | 2016-11-22 | 2017-10-27 | 苏州达美特汽车测试技术有限公司 | A kind of double-range force snesor tested for dynamic impulsion |
-
2016
- 2016-11-22 CN CN201611026531.3A patent/CN106404527A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108400A (en) * | 1984-10-17 | 1986-08-13 | 东京电气株式会社 | Multi-range load cell weighing instrument |
| US4706507A (en) * | 1986-02-21 | 1987-11-17 | Horiba Instruments Incorporated | Torque measuring device having dual range load cells |
| CN2086900U (en) * | 1990-12-24 | 1991-10-16 | 北京理工大学 | Sensor for double-range dynamometer |
| CN101666671A (en) * | 2008-09-05 | 2010-03-10 | 宁波柯力电气制造有限公司 | Double range weighing sensor |
| CN103604537A (en) * | 2013-11-25 | 2014-02-26 | 清华大学苏州汽车研究院（相城） | Method for designing force measurement link in high-speed dynamic test |
| CN205317440U (en) * | 2016-01-14 | 2016-06-15 | 苏州达美特汽车测试技术有限公司 | A prevent overload test device for spare part dynamic impact |
| CN105937998A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Improved double-precision electronic scale |
| CN105973439A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Improved dual-precision electronic scale |
| CN106017659A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Double-precision electronic scale |
| CN106017645A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Safety-type double-precision electronic scale |
| CN106124020A (en) * | 2016-01-20 | 2016-11-16 | 申俊 | A kind of double essence electronic scale |
| CN206593964U (en) * | 2016-11-22 | 2017-10-27 | 苏州达美特汽车测试技术有限公司 | A kind of double-range force snesor tested for dynamic impulsion |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084877A (en) * | 2017-06-15 | 2017-08-22 | 中国水利水电科学研究院 | Spring transfer pressure detection means |
| CN107084877B (en) * | 2017-06-15 | 2024-01-30 | 中国水利水电科学研究院 | Spring type grading pressure detection device |
| CN108414060A (en) * | 2018-02-12 | 2018-08-17 | 上海寺冈电子有限公司 | Double weighing electronic scale |
| CN111122038A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection device and method and engineering machinery |
| WO2021128797A1 (en) * | 2019-12-27 | 2021-07-01 | 中联重科股份有限公司 | Sensor assembly, acting force measurement device and engineering machinery |
| WO2021128798A1 (en) * | 2019-12-27 | 2021-07-01 | 中联重科股份有限公司 | Sensor assembly, force detection device and method, and construction machinery |
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