CN109374163A - A kind of ditrysian type strain sensitive core for force snesor - Google Patents
A kind of ditrysian type strain sensitive core for force snesor Download PDFInfo
- Publication number
- CN109374163A CN109374163A CN201811579705.8A CN201811579705A CN109374163A CN 109374163 A CN109374163 A CN 109374163A CN 201811579705 A CN201811579705 A CN 201811579705A CN 109374163 A CN109374163 A CN 109374163A
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- type strain
- strain sensitive
- web
- sensitive core
- ditrysian type
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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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of ditrysian type strain sensitive cores for force snesor.For making force snesor, the ditrysian type strain sensitive core includes: web and is integrally machined the molding edge of a wing with the web ditrysian type strain sensitive core；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, and the cross section of the ditrysian type strain sensitive core is T-shaped；There are two cavernous structures for the web bottom processing.The edge of a wing and the web constitute T-type structure, and two cavernous structures are set in the web bottom, it 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, improves the sensitivity of stress measurement.And ditrysian type strain sensitive cored structure provided by the invention is simple, compact, is had the characteristics that using force snesor prepared by the ditrysian type strain sensitive core small in size, light-weight.
Description
Technical field
The present invention relates to mechanical meaurement technical fields, more particularly to a kind of ditrysian type strain sensitive for force snesor
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 ditrysian type strain sensitive cores for force snesor, to reduce force snesor
Volume simultaneously improves measurement accuracy.
To achieve the above object, the present invention provides following schemes:
A kind of ditrysian type strain sensitive core for force snesor, the ditrysian type strain sensitive core is for making power sensing
Device, the ditrysian type strain sensitive core include: web and are integrally machined the molding edge of a wing with the web；The web and described
The edge of a wing is 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 ditrysian type strain
The cross section of sensitive core is T-shaped；There are two cavernous structures for the web bottom processing.
Optionally, the ditrysian type 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, the web bottom end is provided with supporter.
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 ditrysian type strain sensitive core for force snesor, and the ditrysian type strain sensitive core is used for
Force snesor is made, the ditrysian type strain sensitive core includes: web and is integrally machined the molding edge of a wing with the web；It is described
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, described
The cross section of ditrysian type strain sensitive core is T-shaped；There are two cavernous structures for the web bottom processing.The edge of a wing and the abdomen
Plate constitutes T-type structure, and two cavernous structures are arranged in the web bottom, will be along the axial compressive strain of tested external force direction
It is converted to bending strain, so that the original strain more intracorporal than elasticity of measurement strain value is much bigger, improves the spirit of stress measurement
Sensitivity.And ditrysian type strain sensitive cored structure provided by the invention is simple, compact, when supporter is arranged under diplopore, quite
The technique letter of two sensitive cores is installed in two independent single hole strain sensitive cores, but on than one elastomer of its mounting process
Single is more, thus using the force snesor of ditrysian type strain sensitive core provided by the invention preparation with simple process, it is small in size,
Light-weight feature.
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 ditrysian type strain sensitive core embodiment two provided by the invention；
Fig. 3 is the structural schematic diagram of ditrysian type strain sensitive core embodiment three provided by the invention；
Fig. 4 is ditrysian type 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 ditrysian type strain sensitive cores for force snesor, utilize several present invention
The ditrysian type strain sensitive core provided can make compressive load (be pressure be not pressure) sensor of large access area, pass
Sensor is installed on large scale equipment, and detection acts on pressure suffered on the limited areal of privileged sites, can reduce power sensing
The volume of device 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
Ditrysian type strain sensitive core embodiment two structural schematic diagram.Fig. 3 is ditrysian type strain sensitive core provided by the invention implementation
The structural schematic diagram of example three.Referring to Fig. 1-3, the object of the present invention is to provide a kind of ditrysian type strain sensitive core, this sensitivity core
Itself is not used separately as force snesor, but is used cooperatively with the exterior elastomer of specific shape (groove body), by diplopore
Formula strain sensitive core is embedded in exterior elastomer, by welding, is struck up partnership with exterior elastomer.When exterior elastomer deforms
When, ditrysian type 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 illustrated by the arrows in fig. 1.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 ditrysian type strain sensitive core provided by the invention is for making force snesor, the ditrysian type strain sensitive core
Basic structure it is as shown in Figure 1 to Figure 3, be made of mutually perpendicular two parts plate structure edge of a wing 1 and web 2, this two parts
Plate structure is one whole, is processed into same metal elastomer.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 the strain experiencing tested external force and generating in itself, is the critical component of force snesor.
The web 2 is the ontology of the ditrysian type strain sensitive core, and the effect on the edge of a wing 1 is and external elastomer
It is affixed.There are two cavernous structures 3 for processing on the web 2.Embodiment as one preferred, the cavernous structure 3 are closure
Oblong hole, as shown in Figure 1, certainly, the cavernous structure 3 of the closure is not limited to oblong hole, for example is also possible to
Round rectangle hole or rounded diamond hole of closure etc..As another preferred embodiment, the cavernous structure 3 is with opening
Oblong hole, as shown in figure 3, certainly, the cavernous structure 3 with opening is not limited to oblong hole, such as can also
To be round rectangle hole or rounded diamond hole etc. with opening.As other preferred embodiment, can also have between two holes
One downwardly convex supporter 4 (as shown in Figures 2 and 3), the supporter 4 are located at the web bottom end.The supporter 4 rises
Supporting role, in certain stresses, the raised supporter 4 can make two hole position distortions symmetrical, be conducive to elimination and quilt
It surveys external force vertically and is parallel to the interference of the power in web direction.When band supporter 4 under the diplopore of the strain sensitive core, quite
Core is strained in two independent single holes.
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 two cavernous structures 3, play two strain sensitive cores
Effect.Fig. 4 is ditrysian type strain sensitive core adhering resistance strain sheets schematic diagram provided by the invention, is strained in the ditrysian type
Four sheet resistance foil gauges are pasted at the edge of each cavernous structure 3 of sensitive core, as shown in R1, R2, R3, R4 in Fig. 4.Because if
Two individual single hole strain sensitive cores are installed in an exterior elastomer, it is more of the invention with the single of diplopore than installing in technique
Sensitive core wants the more of complexity.Therefore double-pore structure provided by the invention simplifies the mounting process of sensitive core.If surveyed external force is closed
Line of symmetry between diplopore has symmetrical feature, the resistance strain gage in two holes can be connected into symmetric form, is conducive in this way
Reduce influence of the frictional force of surface of elastomer to measurement result, to improve the measurement accuracy of external force.
As a preferred embodiment, the ditrysian type strain sensitive core provided by the invention is for making a kind of survey
Amount 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
It is fixed on cutterhead by C-shaped block and voussoir, the plane of voussoir is pressed on cutter shaft side plane and is allowed to fixed, the transmitting of two interplanars
For power maximum up to 30 tons, area is relatively large.Such as to measure this stress, it is necessary to which application uses ditrysian type provided by the invention
The force snesor of strain sensitive core preparation.
In a kind of power for the big active area for preparing rectangular elastomer using ditrysian type strain sensitive core provided by the invention
When sensor, acting surface of the Fig. 1 to the upper surface of any ditrysian type strain sensitive core shown in Fig. 3 for institute's dynamometry is selected.?
Four sheet resistance foil gauges are pasted on each cavernous structure of the ditrysian type strain sensitive core, such as R1, R2, R3, R4 institute in Fig. 4
Show.By this four sheet resistances foil gauge together with the foil gauge being pasted onto exterior elastomer, full-bridge circuit is collectively constituted, then will
Web 2 is inserted into groove body made of exterior elastomer, welds the surface on the edge of a wing 1 and exterior elastomer using argon arc welding technology,
The force snesor is made.Wherein the groove depth of the exterior elastomer is greater than the height of ditrysian type strain sensitive core web 2.It is described
The lead of force snesor can be drawn from the seam of exterior elastomer with 2 bottom of web.
The force snesor prepared using ditrysian type strain sensitive core provided by the invention can excavate hobboing cutter with real-time measurement
Stress, the perils such as huge economic losses and personal injury caused by effectively reducing or avoid because of cutter accidental shutdown
Generation.Due to can grasp in time construction in cutterhead, cutter operating condition, can effective guarantee guarantee driving reliability.
The peace service life of shield machine is also extended simultaneously.
One kind provided by the invention can be embedded in the ditrysian type strain sensitive core inside exterior elastomer, can measure bullet
Property body inside strain, elastomer itself is much larger than to the susceptibility of strain.The body construction of the ditrysian type strain sensitive core
It is the web for being machined with oblong hole or round rectangle hole, will can be converted into being bent along the axial compressive strain of tested external force direction
Strain improves sensitivity so that the original strain more intracorporal than elasticity of measurement strain value is much bigger.
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 ditrysian type strain sensitive core for force snesor, which is characterized in that the ditrysian type strain sensitive core is used for
Force snesor is made, the ditrysian type strain sensitive core includes: web and is integrally machined the molding edge of a wing with the web；It is described
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, described
The cross section of ditrysian type strain sensitive core is T-shaped；There are two cavernous structures for the web bottom processing.
2. ditrysian type strain sensitive core according to claim 1, which is characterized in that the ditrysian type strain sensitive core is gold
Belong to elastomer.
3. ditrysian type strain sensitive core according to claim 1, which is characterized in that the cavernous structure is the oval of closure
Shape hole, round rectangle hole or rounded diamond hole.
4. ditrysian type strain sensitive core according to claim 1, which is characterized in that the cavernous structure is with opening
Oblong hole, round rectangle hole or rounded diamond hole.
5. ditrysian type strain sensitive core according to claim 3 or 4, which is characterized in that the web bottom end is provided with branch
Support body.
6. ditrysian type strain sensitive core according to claim 1, which is characterized in that the edge on the edge of a wing has groove.
7. ditrysian type 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. ditrysian type strain sensitive core according to claim 1, which is characterized in that be pasted with resistance in the cavernous structure
Foil gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579705.8A CN109374163B (en) | 2018-12-24 | 2018-12-24 | A kind of ditrysian type strain sensitive core for force snesor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579705.8A CN109374163B (en) | 2018-12-24 | 2018-12-24 | A kind of ditrysian type strain sensitive core for force snesor |
Publications (2)
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| CN109374163A true CN109374163A (en) | 2019-02-22 |
| CN109374163B CN109374163B (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811579705.8A Active CN109374163B (en) | 2018-12-24 | 2018-12-24 | A kind of ditrysian type strain sensitive core for force snesor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696267A (en) * | 2019-02-27 | 2019-04-30 | 深圳瑞湖科技有限公司 | Pressure sensor and pressure sensitivity key switch |
| CN109813472A (en) * | 2019-03-14 | 2019-05-28 | 湖南道达宇科技有限公司 | A kind of embedded load sensor |
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| CN109696267A (en) * | 2019-02-27 | 2019-04-30 | 深圳瑞湖科技有限公司 | Pressure sensor and pressure sensitivity key switch |
| CN109813472A (en) * | 2019-03-14 | 2019-05-28 | 湖南道达宇科技有限公司 | A kind of embedded load sensor |
| CN109813472B (en) * | 2019-03-14 | 2023-11-24 | 衡通华创(北京)科技有限公司 | Embedded load sensor |
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| CN109374163B (en) | 2019-10-25 |
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