CN109374164A - A kind of right-angled intersection formula strain sensitive core for force snesor - Google Patents
A kind of right-angled intersection formula strain sensitive core for force snesor Download PDFInfo
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- CN109374164A CN109374164A CN201811579739.7A CN201811579739A CN109374164A CN 109374164 A CN109374164 A CN 109374164A CN 201811579739 A CN201811579739 A CN 201811579739A CN 109374164 A CN109374164 A CN 109374164A
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- Prior art keywords
- strain sensitive
- angled intersection
- sensitive core
- intersection formula
- web
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of right-angled intersection formula strain sensitive cores for force snesor.The right-angled intersection formula strain sensitive core includes two groups of ditrysian type strain sensitive cores for making force snesor, the right-angled intersection formula strain sensitive core；Every group of ditrysian type strain sensitive core includes web and is integrally machined the molding edge of a wing with the web；There are two cavernous structures for the processing of web bottom；Ditrysian type strain sensitive core is orthogonal described in two groups intersects to form cross-shaped configuration.Four cavernous structures are arranged in the cross-shaped configuration bottom in the present invention, will be converted to bending strain along the axial compressive strain of tested external force direction, so that the original strain more intracorporal than elasticity of measurement strain value is much bigger, improve the sensitivity of stress measurement.And right-angled intersection formula strain sensitive cored structure provided by the invention is simple, compact, and mounting process is simply more than the technique for installing four individual single hole sensitivity cores on an elastomer, has the characteristics that simple process, small in size, light-weight.
Description
Technical field
The present invention relates to mechanical meaurement technical fields, strain more particularly to a kind of right-angled intersection formula for force snesor
Sensitive core.
Background technique
General force snesor measures the sensor of pulling force or pressure (not being pressure) especially in order to guarantee measurement accuracy,
Measured external force will act on the relatively small region of sensor.If allowing measured external force in relatively large face
Certain structure is added in product, by effective elastomer far from acting surface, just can guarantee the stress of elastomer as far as possible in this way
It is not influenced by the variation of surveyed external force point；Or sensor is done along the size in direction puted forth effort it is long, it is otherwise difficult
To guarantee measurement accuracy.This have the consequence that enabling the volume of sensor become larger, so that it cannot meet actual needs.
Summary of the invention
The object of the present invention is to provide a kind of right-angled intersection formula strain sensitive cores for force snesor, to reduce power sensing
The volume of device simultaneously improves measurement accuracy.
To achieve the above object, the present invention provides following schemes:
A kind of right-angled intersection formula strain sensitive core for force snesor, the right-angled intersection formula strain sensitive core is for making
Make force snesor, the right-angled intersection formula strain sensitive core includes two groups of ditrysian type strain sensitive cores；Right-angled intersection described in every group
Formula strain sensitive core includes web and is integrally machined the molding edge of a wing with the web；The web and the edge of a wing are plate knot
Structure；The edge of a wing is located at the top of the web；The web and the edge of a wing are vertical；There are two poroid for the web bottom processing
Structure；Ditrysian type strain sensitive core is orthogonal described in two groups intersects to form cross-shaped configuration.
Optionally, the right-angled intersection formula strain sensitive core is metal elastomer.
Optionally, the cavernous structure is oblong hole, round rectangle hole or the rounded diamond hole of closure.
Optionally, the cavernous structure is oblong hole, round rectangle hole or rounded diamond hole with opening.
Optionally, central symmetry of the cavernous structure about the right-angled intersection formula strain sensitive core.
Optionally, the edge on the edge of a wing has groove.
Optionally, the ditrysian type strain sensitive core long 10~80mm, high 5~15mm.
Optionally, resistance strain gage is pasted in the cavernous structure.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention provides a kind of right-angled intersection formula strain sensitive core for force snesor, and the right-angled intersection formula strain is quick
Sense core includes two groups of ditrysian type strain sensitive cores for making force snesor, the right-angled intersection formula strain sensitive core；Every group of institute
Ditrysian type strain sensitive core is stated to include web and be integrally machined the molding edge of a wing with the web；The web and the edge of a wing are
Plate structure；The edge of a wing is located at the top of the web；The web and the edge of a wing are vertical；The web bottom is machined with two
A cavernous structure；Ditrysian type strain sensitive core is orthogonal described in two groups intersects to form cross-shaped configuration.The present invention is described ten
Four cavernous structures are arranged in font structure bottom, will be converted to bending strain along the axial compressive strain of tested external force direction, make
It is much bigger that strain value original strain more intracorporal than elasticity must be measured, improve the sensitivity of stress measurement.And the present invention provides
Right-angled intersection formula strain sensitive cored structure it is simple, compact, installed on than one elastomer of mounting process four it is individually single
The technique of hole sensitivity core is simply more, therefore using the power sensing of right-angled intersection formula strain sensitive core provided by the invention preparation
Device has the characteristics that simple process, small in size, light-weight.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also mention according to the present invention
The attached drawing of confession obtains other attached drawings.
Fig. 1 is the structural schematic diagram of ditrysian type strain sensitive core embodiment one provided by the invention；
Fig. 2 is the structural schematic diagram of right-angled intersection formula strain sensitive core embodiment one provided by the invention；
Fig. 3 is the structural schematic diagram of ditrysian type strain sensitive core embodiment two provided by the invention；
Fig. 4 is the structural schematic diagram of right-angled intersection formula strain sensitive core embodiment two provided by the invention；
Fig. 5 is right-angled intersection formula strain sensitive core adhering resistance strain sheets schematic diagram provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of right-angled intersection formula strain sensitive cores for force snesor, utilize several
The right-angled intersection formula strain sensitive core that invention provides can make the compressive load (be pressure be not pressure) of large access area
Sensor, sensor are installed on large scale equipment, and detection acts on pressure suffered on the limited areal of privileged sites, can be subtracted
The volume of small force snesor simultaneously improves pressure measurement accuracy.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the structural schematic diagram of ditrysian type strain sensitive core embodiment one provided by the invention.Fig. 2 provides for the present invention
Right-angled intersection formula strain sensitive core embodiment one structural schematic diagram.Fig. 3 is ditrysian type strain sensitive core provided by the invention
The structural schematic diagram of embodiment two.Fig. 4 is the structural representation of right-angled intersection formula strain sensitive core embodiment two provided by the invention
Figure.Referring to Fig. 1-4, the object of the present invention is to provide a kind of right-angled intersection formula strain sensitive core, this sensitivity core itself is not single
It solely uses as force snesor, but is used cooperatively with the exterior elastomer of specific shape (groove body), right-angled intersection formula is strained
Sensitive core is embedded in exterior elastomer, by welding, is struck up partnership with exterior elastomer.When exterior elastomer deformation, ten
Word staggered form strain sensitive core deforms simultaneously, goes out to answer by the strain gage testing being attached in sensitive core and exterior elastomer
Become, this strains the size for reflecting external force suffered by surface of elastomer, and the direction of measured external force F is as shown by the arrows in figure 2.Fig. 1
Middle external force F is only a kind of signal, and actually external force is on the entire upper surface of strain sensitive core.
The right-angled intersection formula strain sensitive core provided by the invention for making force snesor, answer by the right-angled intersection formula
The structure for becoming sensitive core is as shown in Figure 2 and Figure 4.The right-angled intersection formula strain sensitive core includes two groups of ditrysian type strain sensitives
Core, respectively first group of ditrysian type strain sensitive core 101 and second group of ditrysian type strain sensitive core 102, first group of ditrysian type are answered
It is identical with the structure of second group of ditrysian type strain sensitive core 102 to become sensitive core 101, and ditrysian type strain sensitive core structure described in two groups
It is integral.Ditrysian type strain sensitive core is orthogonal described in two groups intersects to form cross-shaped configuration, constitutes the right-angled intersection
Formula strain sensitive core.
As shown in figures 1 and 3, ditrysian type strain sensitive core described in every group is by mutually perpendicular two parts plate structure edge of a wing
1 and web 2 constitute, this two parts plate structure is one whole, is processed into same metal elastomer, the ditrysian type is answered
Become the section of sensitive core as T shape.The common material of metal elastomer has chromium nickel-molybdenum alloy, chromic-manganese-silicon alloy or alloy aluminum,
But it is not limited to these types of alloy, as long as using the material that elasticity is good, intensity is high.The effect of the elastomer is to experience quilt
The strain that external force generates in itself is surveyed, is the critical component of force snesor.
The web 2 is the ontology of the right-angled intersection formula strain sensitive core, and the effect on the edge of a wing 1 is and external bullet
Property body is affixed.There are two cavernous structures 3 for processing on the web 2.
Embodiment as one preferred, the cavernous structure 3 are the oblong hole of closure, as shown in Figure 1, certainly, institute
The cavernous structure 3 for stating closure is not limited to oblong hole, for example is also possible to the round rectangle hole or rounded diamond hole of closure
Deng.The right-angled intersection formula strain sensitive cored structure such as Fig. 2 institute formed using ditrysian type strain sensitive cored structure shown in FIG. 1
Show.
As another preferred embodiment, the cavernous structure 3 is the oblong hole with opening, as shown in figure 3, working as
So, the cavernous structure 3 with opening is not limited to oblong hole, for example is also possible to the round rectangle hole with opening
Or rounded diamond hole etc..The right-angled intersection formula strain sensitive formed using ditrysian type strain sensitive cored structure shown in Fig. 3
Cored structure is as shown in Figure 4.
The effect of the cross-shaped configuration of the right-angled intersection formula strain sensitive core provided by the invention is to make sensitive core to Fig. 2
Deformation caused by shown external force F is more sensitive, and facilitates interference caused by eliminating external force normal thereto.
First group of ditrysian type strain sensitive core 101 and second group of ditrysian type strain sensitive core, 102 bottom are all provided with
Two cavernous structures 3 are set, therefore there are four cavernous structures for tool altogether for the right-angled intersection formula strain sensitive core bottom, are equivalent to four
A strain sensitive core.In practical applications, center of four cavernous structures 3 about the right-angled intersection formula strain sensitive core
It symmetrically, can also be asymmetric.
The effect of the cavernous structure is, when sensitive core is by external force, especially by perpendicular to the outer of the edge of a wing 1
Masterpiece used time, stress when certain local stress in hole are much larger than non-aperture can make in these position adhering resistance strain sheets
The strain sensitivity of sensitive core greatly improves.The purpose for opening the hole of diversified forms is to be suitable for different elastomer and stress
State.
Closure body is played the role of on the edge of a wing 1 on 2 top of web, and there is groove at the edge on the edge of a wing 1, is used for and outer
The welding of portion's elastomer.Argon arc welding must be used when welding, be confined to high temperature near weld bond, will not be made the electricity on sensitive core ontology
Resistance foil gauge is destroyed because of high temperature.
The size of the ditrysian type strain sensitive core is depending on application conditions.It is generally preferred to grow in 10~80mm, high by 5~
15mm or so is certainly not limited to this range.
In practical applications, four sheet resistance foil gauges can be respectively pasted in four cavernous structures 3, play four strain sensitive cores
Effect.Fig. 5 is right-angled intersection formula strain sensitive core adhering resistance strain sheets schematic diagram provided by the invention, is handed in the cross
In the four sheet resistance foil gauges of edge stickup of each cavernous structure 3 of V shape strain sensitive core, four sheet resistance foil gauges such as Fig. 5
Shown in R1, R2, R3, R4.Because comparing in technique if installing four individual single hole strain sensitive cores in an exterior elastomer
The single sensitive core for installing four hole of band of the present invention wants the more of complexity.Therefore right-angled intersection formula structure provided by the invention simplifies quick
Feel the mounting process of core.If external force is uniformly applied to the right-angled intersection formula strain sensitive core, the resistance in four holes is answered
Become piece carry out it is different connect bridge mode, can not only measure the resultant force of surveyed external force, the position of resultant force, condition four can also be measured
A hole is arranged symmetrically.
As a preferred embodiment, the right-angled intersection formula strain sensitive core provided by the invention is for making one
Kind measurement acts on the force snesor on relatively large area.For example, tunneling boring hard rock mole (TBM) passes through hobboing cutter broken rock,
Hobboing cutter is fixed on cutterhead by C-shaped block and voussoir, and the plane of voussoir is pressed on cutter shaft side plane and is allowed to fixed, and two interplanars pass
For the power maximum passed up to 30 tons, area is relatively large.Such as to measure this stress, it is necessary to which application uses provided by the invention ten
The force snesor of word staggered form strain sensitive core preparation.
In the big active area for preparing a kind of rectangular elastomer using right-angled intersection formula strain sensitive core provided by the invention
Force snesor when, select the upper surface of any right-angled intersection formula strain sensitive core of Fig. 2 or shown in Fig. 4 for the work of institute's dynamometry
Use face.Four sheet resistance foil gauges are pasted on each cavernous structure 3 of the right-angled intersection formula strain sensitive core, in Fig. 5
Shown in R1, R2, R3, R4.By this four sheet resistances foil gauge together with the foil gauge being pasted onto exterior elastomer, collectively constitute complete
Then web 2 is inserted into groove body made of exterior elastomer by bridge circuit, using argon arc welding technology by the surface on the edge of a wing 1 and outside
The welding of portion's elastomer, is made the force snesor.Wherein the groove depth of the exterior elastomer is greater than the ditrysian type strain sensitive
The height of core web 2.The lead of the force snesor can be drawn from the seam of exterior elastomer with 2 bottom of web.
The force snesor prepared using right-angled intersection formula strain sensitive core provided by the invention can be excavated with real-time measurement and be rolled
The stress of knife, huge economic losses and personal injury caused by effectively reducing or avoid because of cutter accidental shutdown etc. are dangerous
The generation of accident.Due to can grasp in time construction in cutterhead, cutter operating condition, can effective guarantee guarantee driving it is reliable
Property.The peace service life of shield machine is also extended simultaneously.
One kind provided by the invention can be embedded in the right-angled intersection formula strain sensitive core inside exterior elastomer, can survey
The strain inside elastomer is measured, elastomer itself is much larger than to the susceptibility of strain.The right-angled intersection formula strain sensitive core
Body construction is the web for being machined with oblong hole or round rectangle hole, can will be turned along the axial compressive strain of tested external force direction
It changes bending strain into, so that the original strain more intracorporal than elasticity of measurement strain value is much bigger, improves sensitivity.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand the device of the invention and its core concept；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of right-angled intersection formula strain sensitive core for force snesor, which is characterized in that the right-angled intersection formula strain is quick
Sense core includes two groups of ditrysian type strain sensitive cores for making force snesor, the right-angled intersection formula strain sensitive core；Every group of institute
Ditrysian type strain sensitive core is stated to include web and be integrally machined the molding edge of a wing with the web；The web and the edge of a wing are
Plate structure；The edge of a wing is located at the top of the web；The web and the edge of a wing are vertical；The web bottom is machined with two
A cavernous structure；Ditrysian type strain sensitive core is orthogonal described in two groups intersects to form cross-shaped configuration.
2. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that the right-angled intersection formula strain is quick
Sense core is metal elastomer.
3. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that the cavernous structure is closure
Oblong hole, round rectangle hole or rounded diamond hole.
4. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that the cavernous structure is with opening
Oblong hole, round rectangle hole or the rounded diamond hole of mouth.
5. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that four cavernous structures about
The central symmetry of the right-angled intersection formula strain sensitive core.
6. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that the edge on the edge of a wing has slope
Mouthful.
7. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that the ditrysian type strain sensitive core
Long 10~80mm, high 5~15mm.
8. right-angled intersection formula strain sensitive core according to claim 1, which is characterized in that be pasted in the cavernous structure
Resistance strain gage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579739.7A CN109374164B (en) | 2018-12-24 | 2018-12-24 | A kind of right-angled intersection formula strain sensitive core for force snesor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579739.7A CN109374164B (en) | 2018-12-24 | 2018-12-24 | A kind of right-angled intersection formula strain sensitive core for force snesor |
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| Publication Number | Publication Date |
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| CN109374164A true CN109374164A (en) | 2019-02-22 |
| CN109374164B CN109374164B (en) | 2019-10-25 |
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| CN201811579739.7A Active CN109374164B (en) | 2018-12-24 | 2018-12-24 | A kind of right-angled intersection formula strain sensitive core for force snesor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118300U (en) * | 1992-05-15 | 1992-10-07 | 北京金时石油测试技术有限公司 | Force measuring mechanism with through hole internal adhesion piece |
| CN2176535Y (en) * | 1993-10-22 | 1994-09-07 | 胡光良 | Attached resistor strain sensor |
| CN2301709Y (en) * | 1997-09-05 | 1998-12-23 | 李金彪 | Non-foundation-pit track bridge type weighing sensor |
| CN103698075A (en) * | 2013-12-30 | 2014-04-02 | 天津大学 | Device for online detection for stress of hobbing cutter of tunnel boring machine |
| CN205066979U (en) * | 2015-10-14 | 2016-03-02 | 成都太微电子科技有限公司 | Draw pressure sensor |
| CN106370333A (en) * | 2016-09-21 | 2017-02-01 | 武汉大学 | TBM hobbing cutter stress online real-time monitoring apparatus and monitoring method |
| CN107014472A (en) * | 2017-05-24 | 2017-08-04 | 深圳市靖洲科技有限公司 | A kind of dynamic electron miniature self-service car weighing apparatus of single hole cantilever beam foil gauge |
| CN107144330A (en) * | 2017-05-24 | 2017-09-08 | 深圳市靖洲科技有限公司 | A kind of dynamic electron miniature self-service car weighing apparatus of diplopore cantilever beam foil gauge |
-
2018
- 2018-12-24 CN CN201811579739.7A patent/CN109374164B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118300U (en) * | 1992-05-15 | 1992-10-07 | 北京金时石油测试技术有限公司 | Force measuring mechanism with through hole internal adhesion piece |
| CN2176535Y (en) * | 1993-10-22 | 1994-09-07 | 胡光良 | Attached resistor strain sensor |
| CN2301709Y (en) * | 1997-09-05 | 1998-12-23 | 李金彪 | Non-foundation-pit track bridge type weighing sensor |
| CN103698075A (en) * | 2013-12-30 | 2014-04-02 | 天津大学 | Device for online detection for stress of hobbing cutter of tunnel boring machine |
| CN205066979U (en) * | 2015-10-14 | 2016-03-02 | 成都太微电子科技有限公司 | Draw pressure sensor |
| CN106370333A (en) * | 2016-09-21 | 2017-02-01 | 武汉大学 | TBM hobbing cutter stress online real-time monitoring apparatus and monitoring method |
| CN107014472A (en) * | 2017-05-24 | 2017-08-04 | 深圳市靖洲科技有限公司 | A kind of dynamic electron miniature self-service car weighing apparatus of single hole cantilever beam foil gauge |
| CN107144330A (en) * | 2017-05-24 | 2017-09-08 | 深圳市靖洲科技有限公司 | A kind of dynamic electron miniature self-service car weighing apparatus of diplopore cantilever beam foil gauge |
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