CN206593964U - A kind of double-range force snesor tested for dynamic impulsion - Google Patents
A kind of double-range force snesor tested for dynamic impulsion Download PDFInfo
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- CN206593964U CN206593964U CN201621248010.8U CN201621248010U CN206593964U CN 206593964 U CN206593964 U CN 206593964U CN 201621248010 U CN201621248010 U CN 201621248010U CN 206593964 U CN206593964 U CN 206593964U
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a kind of double-range force snesor tested for dynamic impulsion, including bearing part, loaded member above the bearing part, it is disposed in parallel in the first load cell and the second load cell between the bearing part and the loaded member, it is separately positioned on the foil gauge on first load cell and second load cell, the upper and lower ends of first load cell are supported be located on the bearing part and the loaded member respectively, the lower end of second load cell is supported and is located on the bearing part, there is a gap between the other end and the loaded member of second load cell.The intrinsic frequency of the double-range force snesor is high, is applicable to dynamic impact test；The device can measure load, and measurement accuracy is high in a big way in dynamic impact test simultaneously；The other apparatus structure is simple, compact.
Description
Technical field
The utility model is specifically related to material mechanical performance test and characterization technique field, and in particular to one kind is used for dynamic
The double-range force snesor of shock-testing.
Background technology
The poly- ammonia inside a large amount of foamed materials, such as polyethylene of automotive front end bumper, seat has been used on automobile
Ester foam.In automobile and pedestrian collision, foam bumper can effectively reduce the injury to pedestrian, so research impact
The mechanical characteristic of foamed material is particularly important in experiment.Foamed material is mainly pressurized in automotive vehicles applications, it is therefore desirable to open
Foam compresses Mechanics Performance Testing is opened up, it is very small that foamed material its mechanical characteristic in compression process shows as initial force value
And rise slowly, cross behind platform area when decrement reaches 85% or so, foam is gradually compacted, force value starts increasing drastically
Greatly.The force snesor of a wide range is used only generally in the impact test of foamed material, it has the disadvantage not ensureing initial
Force value is very small and rises the measurement accuracy of slow platform area.
Chinese patent application document（Application number：CN 103017943 A）Disclose a kind of pressure sensing machine of double-range
Structure.This patent is provided with the pressure sensor of two amounts journey, and the sensor of small-range is protected using the device of spring and sleeve.
Due to the sensor for the spring supporting small-range that the invention is used, the solid state frequency of whole pressure sensing mechanism is reduced, it is impossible to
For dynamic impulsion testing experiment.
The content of the invention
Technical problem to be solved in the utility model is to can be used in dynamic there is provided one kind for problem of the prior art
Impact test and the high double-range force snesor of measurement accuracy.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
It is a kind of for dynamic impulsion test double-range force snesor, including bearing part, above the bearing part
Loaded member, the first load cell being disposed in parallel between the bearing part and the loaded member and the second load cell, difference
It is arranged on the foil gauge on first load cell and second load cell, the upper and lower ends of first load cell
Support and be located on the bearing part and the loaded member respectively, the lower end of second load cell, which is supported, to be located on the bearing part,
There is a gap between the other end and the loaded member of second load cell.
Preferably, first load cell and second load cell are vertically extending, and described first surveys
Power unit is identical in the cross-sectional area on loading direction with second load cell.
Preferably, first load cell and second load cell are vertically extending, and described first surveys
Power unit is different in the cross-sectional area on loading direction with second load cell, and second load cell
Cross-sectional area be more than first load cell cross-sectional area.
Preferably, first load cell is provided with one or more, and second load cell is provided with one or more.
Preferably, the loaded member includes load plate and is fixedly installed on the First Transition part of the load plate lower end, institute
State the first load cell upper end support be located on the lower surface of the First Transition part, the upper end of second load cell and institute
Stating has the gap between the lower surface of First Transition part, and the First Transition part is gradually reduced in section from the top down.
Further, the First Transition part is in the taper type structure that section is gradually reduced from the top down.
Preferably, the bearing part includes loading plate and is fixedly installed on the second transition piece of the loading plate upper end, institute
The lower end for stating the first load cell and second load cell is supported and is located on the upper surface of second transition piece, and described the
Section is gradually reduced two transition pieces from bottom to top.
Further, second transition piece is in the taper type structure that section is gradually reduced from bottom to top.
Preferably, the bearing part, the loaded member, first load cell, second load cell are by gold
Category material is made.
Preferably, the bearing part, the loaded member, first load cell, second load cell are by monoblock
Steel ingot is made up of numerical control machining center and linear cutter.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：This practicality is new
The intrinsic frequency for being used for the double-range force snesor that dynamic impulsion is tested of type is high, is applicable to dynamic impact test；And should
Device can measure load, and measurement accuracy is high in a big way in dynamic impact test；The apparatus structure is simple, tight simultaneously
Gather.
Brief description of the drawings
Accompanying drawing 1 is used for the stereogram for the double-range force snesor that dynamic impulsion is tested to be of the present utility model；
Accompanying drawing 2 is used for the front view for the double-range force snesor that dynamic impulsion is tested to be of the present utility model；
Accompanying drawing 3 is partial enlarged drawing at A in accompanying drawing 2；
Accompanying drawing 4 is used for the side view for the double-range force snesor that dynamic impulsion is tested to be of the present utility model.
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.
Embodiment
The technical solution of the utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 to 4, it is of the present utility model to include bearing part for the double-range force snesor that dynamic impulsion is tested
1st, loaded member 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 constituted by the foil gauge 4 being pasted onto on load cell 3, for measuring the actual load being applied in loaded member 2
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 in the first dynamometry respectively
On the load cell 32 of unit 31 and second, the foil gauge 4 being pasted onto on the first load cell 31 is with being 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 prolong along the vertical direction
Stretch, and be disposed in parallel between bearing part 1 and loaded member 2.It is located at specifically, the upper and lower ends of the first load cell 31 are supported respectively
On bearing part 1 and loaded member 2, the lower end of the second load cell 32, which is supported, to be located on bearing part 1, is had between its upper end and loaded member 2
There is a gap delta.
First load cell 31 and the second load cell 32 the cross-sectional area on loading direction can with identical,
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 can also 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 the load cell 32 of unit 31 and second is supported and is located on the upper surface of 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, upper end and the First Transition part 22 of the second load cell 32
There is above-mentioned gap delta between lower surface.
Loading plate 11 and load plate 21 are in circular plate type structure, to reduce in test process due to bearing part 1 and loaded member 2
Relative to influence of the abrupt change of cross-section to measurement result of load cell 3, cross-sectional area gradually subtracts First Transition part 22 from the top down
Small, cross-sectional area is gradually reduced the second transition piece 12 from bottom to top, so, can force signal from the mistake of First Transition part 22 and second
Cross and seamlessly transitted on part 12, to improve measuring accuracy.
In order to ensure the rigidity of the 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 double-range force snesor of the present utility model is as follows：
First, calculated according to the gap delta between the upper end of the second load cell 32 and the lower surface of First Transition part 22
It is applied to the reference load F1 on bearing part 2.
Apply certain load F to bearing part 2, if the load F applied is not more than reference load F1, load F is by loading
Plate 11 is delivered to First Transition part 12, and the first load cell 31 is delivered to along First Transition part 12, and along the second transition piece
22 are delivered to loading plate 21.After active force of first load cell 31 by load F, occur elasticity of compression deformation, now paste
The measuring bridge that foil gauge 4 on the first load cell 31 is constituted just has output, and by connecting, deformeter is i.e. measurable to be somebody's turn to do
Electricity, is multiplied by the numerical value that coefficient obtains applied load F.Because the elastic deformation amount of the first load cell 31 is less than gap
δ values, double-range force snesor now is equivalent to the force snesor that small cross-sectional area small-range is formed by the first load cell 31.
If the load F applied is more than reference load F1, load F is delivered to First Transition part 12 by load plate 11 first,
The first load cell 31 is delivered to along First Transition part 12, and loading plate 21 is delivered to along the second transition piece 22.First surveys
After active force of the power unit 31 by load F, occur elasticity of compression deformation, and the compress variation reaches gap delta, so that
The lower surface of First Transition part 22 and the upper-end contact of the second load cell 32 are obtained, now load F is just along First Transition part 12
It is delivered to simultaneously on the first load cell 31 and the second load cell 32, is 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 occur the elasticity of compression and become by load F active force
Shape, measuring bridge that the foil gauge 4 that is now pasted onto on the first load cell 31 is constituted, is pasted onto on the second load cell 32
The measuring bridge that foil gauge 4 is constituted all produces output.Load measured by two groups of measuring bridges is added and obtains what is applied
Load F numerical value.Double-range force snesor now is constituted equivalent to 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 the double-range force sensor measuring from 0 to F（F>F1）Load when, as load F, to be not more than F1 smaller,
The double-range force snesor only the first load cell 31 works, that is, the force snesor of small-range, can use the small-range
Force snesor test less load, initial force value is very small during with guarantee test and rises the measurement of slow platform area essence
Degree；After load F is more than F1, the first load cell 31 and the collective effect of the second load cell 32 in the double-range force snesor,
That is, the force snesor of wide range, can accurately be measured compared with big load with the force snesor of the wide range.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (10)
1. a kind of double-range force snesor tested for dynamic impulsion, it is characterised in that：Including bearing part, positioned at the carrying
Loaded member above part, the first load cell and the second dynamometry list being disposed in parallel between the bearing part and the loaded member
Member, the foil gauge being separately positioned on first load cell and second load cell, first load cell
Upper and lower ends are supported be located on the bearing part and the loaded member respectively, and the lower end of second load cell, which is supported, is located at described hold
In holder, there is a gap between the other end and the loaded member of second load cell.
2. the double-range force snesor according to claim 1 tested for dynamic impulsion, it is characterised in that：Described first
Load cell and second load cell are vertically extending, first load cell and second load cell
It is identical in the cross-sectional area on loading direction.
3. the double-range force snesor according to claim 1 tested for dynamic impulsion, it is characterised in that：Described first
Load cell and second load cell are vertically extending, first load cell and second load cell
It is different in the cross-sectional area on loading direction, and the cross-sectional area of second load cell is more than described first and surveys
The cross-sectional area of power unit.
4. the double-range force snesor according to claim 1 tested for dynamic impulsion, it is characterised in that：Described first
Load cell is provided with one or more, and second load cell is provided with one or more.
5. the double-range force snesor according to claim 1 tested for dynamic impulsion, it is characterised in that：The loading
Part includes load plate and is fixedly installed on the First Transition part of the load plate lower end, and the upper end of first load cell, which is supported, to be set
On the lower surface of the First Transition part, between the lower surface of the upper end of second load cell and the First Transition part
With the gap, the First Transition part is gradually reduced in section from the top down.
6. the double-range force snesor according to claim 5 tested for dynamic impulsion, 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 according to claim 1 tested for dynamic impulsion, it is characterised in that：The carrying
Part includes loading plate and is fixedly installed on the second transition piece of the loading plate upper end, first load cell and described second
The lower end of load cell is supported and is located on the upper surface of second transition piece, and section is gradually from bottom to top for second transition piece
Reduce.
8. the double-range force snesor according to claim 7 tested for dynamic impulsion, 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 according to claim 1 tested for dynamic impulsion, it is characterised in that：The carrying
Part, the loaded member, first load cell, second load cell are made by metal material.
10. the double-range force snesor according to claim 1 tested for dynamic impulsion, it is characterised in that：It is described to hold
Holder, the loaded member, first load cell, second load cell by monoblock steel ingot by numerical control machining center and
Linear cutter is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248010.8U CN206593964U (en) | 2016-11-22 | 2016-11-22 | A kind of double-range force snesor tested for dynamic impulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621248010.8U CN206593964U (en) | 2016-11-22 | 2016-11-22 | A kind of double-range force snesor tested for dynamic impulsion |
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| Publication Number | Publication Date |
|---|---|
| CN206593964U true CN206593964U (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621248010.8U Active CN206593964U (en) | 2016-11-22 | 2016-11-22 | A kind of double-range force snesor tested for dynamic impulsion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404527A (en) * | 2016-11-22 | 2017-02-15 | 苏州达美特汽车测试技术有限公司 | Double-range force sensor for dynamic impact testing |
| CN111122037A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection equipment and engineering machinery |
-
2016
- 2016-11-22 CN CN201621248010.8U patent/CN206593964U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404527A (en) * | 2016-11-22 | 2017-02-15 | 苏州达美特汽车测试技术有限公司 | Double-range force sensor for dynamic impact testing |
| CN111122037A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection equipment and engineering machinery |
| CN111122037B (en) * | 2019-12-27 | 2020-12-15 | 中联重科股份有限公司 | Sensor assembly, acting force detection equipment and engineering machinery |
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