CN206876274U - A kind of linear self compensation weighing sensor - Google Patents
A kind of linear self compensation weighing sensor Download PDFInfo
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- CN206876274U CN206876274U CN201720550278.5U CN201720550278U CN206876274U CN 206876274 U CN206876274 U CN 206876274U CN 201720550278 U CN201720550278 U CN 201720550278U CN 206876274 U CN206876274 U CN 206876274U
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- elastomer
- center pillar
- chip area
- linear self
- weighing sensor
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A kind of linear self compensation weighing sensor, including the elastomer of lower end fixed pillar, carrying pressure head and the strain gauge on elastomer, it is characterised in that：The elastomer is in cylinder, use inside elastomer centered on center pillar, periphery is symmetrically distributed with the structures of multiple variable cross-section side columns, elliptical aperture is formed between center pillar and side column, Chip Area is formed in center pillar periphery, strain gauge is pasted onto in the Chip Area of center pillar periphery, when elastomer stand under load, Chip Area entirety deformation, deformation bak stay area still makes elliptical aperture keep ellipsoidal structure.The utility model is reasonable in design, preferably solves column type sensor nonlinear problem caused by metal Poisson's ratio by interior optimization design, solves the problems, such as unbalance loading exporting change by internal center pillar surrounding paster mode, so that sensor has linear self-compensating function, weighing precision height is substantially increased, available for electronic weighing appliances such as truck scales.
Description
Technical field
The utility model belongs to weight sensing technology field, is related to a kind of lower end plane fixed pillar weighing and sensing
Device, and in particular to a kind of linear self compensation weighing sensor, applied to electronic weighing appliances such as truck scales.
Background technology
Column type sensor is widely used in the various electronic scales such as various truck scales, track scale, axle weight scale, batch can scale and reseted
It is standby.Common weighing apparatus typically all shakes pole structure with column type sensor using double bulbs, and this structure has Self-resetting to the heart
Advantage, but have the hidden danger toppled when angle excursion is larger, especially long-term use have that abrasion and this situation of corrosion are more obvious,
The column type sensor of the market mainstream has pure pillar and cuts two kinds of pillar, and pure pillar needs to be mended with linear because of itself linear inherent shortcoming
It is linear to repay piece adjustment, and linear compensation tablet quality is difficult to ensure that, hidden danger of quality is added while increasing technology difficulty；Cut pillar
The output of sensor unbalance loading is more sensitive, and being exported in the angled deflection of sensor to have an impact.
Through looking into, existing Patent No. CN201320135747.9 Chinese utility model patent《A kind of high-precision pillar claims
Retransmit sensor》, including elastomer and the full bridge measurement circuit that is made up of eight resistance, it is characterised in that：Also include being used for institute
The compensation resistance that full bridge measurement circuit carries out nonlinear compensation is stated, the compensation resistant series are connected to the full bridge measurement circuit
Power input, the compensation resistance is semiconductor resistor and is installed on the surface of the elastomer.This sensor passes through
Increase compensation resistance to carry out nonlinear compensation to full bridge measurement circuit, is not linear compensation, therefore also need to passing
The structure of sensor carries out transformation and develops a kind of linear self compensation weighing sensor.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of rational in infrastructure, title for the above-mentioned state of the art
The high linear self compensation weighing sensor of weight precision.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of linear self compensation weighing and sensing
Device, including the elastomer of lower end fixed pillar, carrying pressure head and the strain gauge on elastomer, it is characterised in that：It is described
Elastomer is used inside elastomer centered on center pillar, periphery is symmetrically distributed with the structures of multiple variable cross-section side columns in cylinder,
Elliptical aperture is formed between center pillar and side column, Chip Area is formed in center pillar periphery, strain gauge is pasted onto in the Chip Area of center pillar periphery,
When elastomer stand under load, Chip Area entirety deformation, deformation bak stay area still makes elliptical aperture keep ellipsoidal structure.
Further, center pillar and the variable cross-section side column is that elliptical aperture is inwardly symmetrically cut by portion in the elastomer to be formed
's.
It is preferred that the variable cross-section side column is four, Chip Area is 4, and strain is calculated as 4 corresponding with Chip Area, respectively
The symmetrical surrounding for being pasted onto center pillar.
It is preferred that the upper end of the elastomer forms the loading end of ball-and-socket shape, a carrying steel ball is arranged in loading end, held
Load pressure head is horizontally placed on the top of carrying steel ball, carries the upper end cooperation being arranged with the middle part of the lower surface of pressure head with carrying steel ball
Arc-shaped concave, lower end is plane formula fixed structure.
Further, the outer ring sealing of the elastomer is provided with metal coating shell, protects the middle part side of shell to be provided with out
Line mouth, waterproof jointing is provided with line outlet.
Compared with prior art, the utility model has the advantage of：Center pillar and variable cross-section side column formula are used inside elastomer
Structure, elliptical aperture is formed between center pillar and side column, Chip Area is formed in center pillar periphery, when elastomer stand under load, Chip Area is overall
Deformation, deformation bak stay area still make elliptical aperture keep ellipsoidal structure, solve the problems, such as linear bad and unbalance loading output；
Elastomer upper end loading end is carried using ball-and-socket, uses steel ball power transmission above, lower surface uses planar structure, so as to the bottom that is connected
Plate or carrying soleplate, avoiding sensor has the hidden danger toppled when angle excursion is larger.The utility model structure design is closed
Reason, preferably solves column type sensor nonlinear problem caused by metal Poisson's ratio by interior optimization design, by interior
Portion's center pillar surrounding paster mode solves the problems, such as unbalance loading exporting change so that sensor has linear self-compensating function, carries significantly
High weighing precision is high, available for electronic weighing appliances such as truck scales.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the structural representation of Fig. 1 elastomers；
Fig. 3 is sectional views of the Fig. 2 along line A-A；
Fig. 4 is sectional views of the Fig. 3 along line B-B；
Fig. 5 is the stress and deformation schematic diagram of the pure column type sensor of tradition；
Fig. 6 is Fig. 5 transverse sectional view；
Fig. 7 is Fig. 2 elastomer stress and deformation schematic diagram；
Fig. 8 is Fig. 7 transverse sectional view.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figures 1-4, a kind of linear self compensation weighing sensor, including elastomer 1, carrying steel ball 2, carrying pressure head
3, shell 4 and the strain gauge in elastomer 1 are protected, elastomer 1 in cylinder, inwardly symmetrically cut by the middle part of elastomer 1
Cut elliptical aperture formation newel and variable cross-section side column structure, the structure be centered on center pillar 11, periphery be symmetrically distributed with 4
Variable cross-section side column 12, elliptical aperture 15 is formed between center pillar 11 and side column 12, and Chip Area 13, strain gauge are formed in the periphery of center pillar 11
For corresponding four, respectively symmetrically it is pasted onto in the surrounding Chip Area 13 of center pillar 11, the upper end of elastomer 1 forms ball-and-socket shape
Loading end 14, carrying steel ball 2 are arranged in loading end 14, and carrying pressure head 3 is horizontally placed on the top of carrying steel ball 2, carrying pressure
The arc-shaped concave 31 coordinated with the upper end of carrying steel ball 2 is arranged with the middle part of first 3 lower surface, is so carried using ball-and-socket, above
With the carrying power transmission of steel ball 2, elastomer bottom is plane fixed structure, and avoid sensor has what is toppled when angle excursion is larger
Hidden danger, make weighing more accurate；When 1 stand under load of elastomer, 13 overall deformation of Chip Area, as shown in Figure 7,8, deformation bak stay area
13, elliptical aperture 15 is still kept ellipsoidal structure；Metal coating shell 4 is provided with the sealing of 1 outer ring of elastomer, protects shell 4
Play a part of protecting elastomer 1, solve the problems, such as that sensor uses easy seal failure in adverse circumstances, protecting
The middle part side of shell 4 is provided with line outlet, and waterproof jointing 5 is provided with line outlet, convenient to draw signal by wire, and
It can effectively seal, not influence the transmission of load.
Fig. 5,6 be traditional pure column type sensor stress and deformation schematic diagram, sensor 10 in stand under load in the middle part of strain regions
Cylindrical structure compressive deformation, when force value changes, corresponding sectional area can respective change, such as F1 ＜ F2 ＜ F3, then D1 ＜ D2 ＜
D3.Because of the constancy of volume of cylinder corresponding to various different conditions, therefore strain transducer δ and D2It is inversely proportional, therefore, pure pillar passes
Unintentional nonlinearity be present in sensor output.
The present embodiment is designed to that polystyle structure, Chip Area 13 still make elliptical aperture 15 sensed for ellipse after deforming
During device stand under load, Chip Area entirety deformation, deformation bak stay area still makes elliptical aperture 15 keep oval structure, in oval size and material
And overall structure dimensional fits it is proper in the case of elliptical curvature can be kept constant, therefore, do not have structural non-linear appearance,
F and δ direct proportionalities.
Sensor of the present utility model by interior optimization design solve column type sensor caused by metal Poisson's ratio it is non-
The problem of linear, solves the problems, such as unbalance loading exporting change by internal polystyle surrounding paster mode.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of linear self compensation weighing sensor, including the elastomer of lower end fixed pillar, carrying pressure head and located at elasticity
Strain gauge on body, it is characterised in that：The elastomer is in cylinder, and elastomer inside is used centered on center pillar, periphery pair
Claim the structure that multiple variable cross-section side columns are distributed with, elliptical aperture is formed between center pillar and side column, Chip Area is formed in center pillar periphery, should
Become meter to be pasted onto in the Chip Area of center pillar periphery, when elastomer stand under load, Chip Area entirety deformation, deformation bak stay area still makes ellipse
Circular hole keeps ellipsoidal structure.
2. linear self compensation weighing sensor according to claim 1, it is characterised in that：Center pillar and the variable cross-section side column
Elliptical aperture is inwardly symmetrically cut by portion in the elastomer to be formed.
3. linear self compensation weighing sensor according to claim 1, it is characterised in that：The variable cross-section side column is four
Individual, Chip Area is 4, and strain is calculated as 4 corresponding with Chip Area, is respectively symmetrically pasted onto the surrounding of center pillar.
4. linear self compensation weighing sensor according to claim 1, it is characterised in that：The upper end shaping of the elastomer
There is the loading end of ball-and-socket shape, a carrying steel ball is arranged in loading end, and carrying pressure head is horizontally placed on the top of carrying steel ball, holds
The arc-shaped concave for being arranged with the middle part of the lower surface of pressure head and coordinating with the upper end of carrying steel ball is carried, lower end is plane formula fixed structure.
5. the linear self compensation weighing sensor according to Claims 1-4 any claim, it is characterised in that：It is described
The outer ring sealing of elastomer is provided with metal coating shell, protects the middle part side of shell to be provided with line outlet, is provided with line outlet anti-
Water jointing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720550278.5U CN206876274U (en) | 2017-05-17 | 2017-05-17 | A kind of linear self compensation weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720550278.5U CN206876274U (en) | 2017-05-17 | 2017-05-17 | A kind of linear self compensation weighing sensor |
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| Publication Number | Publication Date |
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| CN206876274U true CN206876274U (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720550278.5U Active CN206876274U (en) | 2017-05-17 | 2017-05-17 | A kind of linear self compensation weighing sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781698A (en) * | 2020-12-28 | 2021-05-11 | 航天南洋（浙江）科技有限公司 | Stable column type weighing sensor structure |
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2017
- 2017-05-17 CN CN201720550278.5U patent/CN206876274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781698A (en) * | 2020-12-28 | 2021-05-11 | 航天南洋（浙江）科技有限公司 | Stable column type weighing sensor structure |
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