CN202471195U - Multi-pillar pressure force sensor - Google Patents
Multi-pillar pressure force sensor Download PDFInfo
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- CN202471195U CN202471195U CN2012201047016U CN201220104701U CN202471195U CN 202471195 U CN202471195 U CN 202471195U CN 2012201047016 U CN2012201047016 U CN 2012201047016U CN 201220104701 U CN201220104701 U CN 201220104701U CN 202471195 U CN202471195 U CN 202471195U
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Abstract
The utility model discloses a multi-pillar pressure force sensor. The multi-pillar pressure force sensor comprises an elastomer, a force transmission steel ball, a load bearing pressure head and segmental notches which are arranged between the elastomer and the load bearing pressure head and used for assembling the force transmission steel ball, wherein the pillar type elastomer is an integral component, a plurality of identical pillars are arranged in an intermediate strain area, the cross sections of the pillars are of regular polygons or circles, the ratio of the diameter of circumcircle of the cross section of each pillar to the height of each pillar is (1:0.8)-(1:3.5), and the ratio of the radius of the steel ball to the radii of the segmental notches is 1/3 to 1/1.1. According to the multi-pillar pressure force sensor, the construction characteristics of two kinds of sensors, namely pillar sensors and double-shear-beam sensors, are integrated, and the elastomer is designed into a multi-pillar structure, so that the multi-pillar pressure force sensor has the advantages of large capacity, small volume, convenience in mounting, strong resetting capability, high sensitivity, high test accuracy, strong lateral force resistance and impact force resistance, excellent and stable working performance and long service life.
Description
Technical field
The utility model relates to a kind of pillar and presses to force transducer, particularly be that a kind of polystyle is pressed to force transducer.
Background technology
Pressing to force transducer is a kind of sensitive element that load is accurately measured, and it is in all kinds of electronic-weighing equipment such as electronic vehicle weighing apparatus, track scale, electronic platform scale, bunker scale.Press to force transducer and mainly contain pillar and double shear beam type.Column type sensor has advantages such as measuring accuracy height, symmetry is good, the capacity of weighing is big, volume is little; But the output sensitivity of this sensor is influenced greatly by the change in location of bearing point; Precision and the reliability measured are not high; Again because its main structure body is the tumbler form, so its mounting process is complicated; The double shear beam sensor has advantages such as reset capability is strong, easy for installation, but the complex structure of this sensor, measurement range is little, and static properties stress influence by bending is bigger, and stability is lower.
Summary of the invention
The purpose of the utility model is to overcome as possible existing defective of pressing to force transducer, and the advantage that proposes a kind of clustered column formula and double shear beam sensor is that the polystyle of one is pressed to force transducer.
The technical scheme that realizes above-mentioned purpose is: a kind of polystyle is pressed to force transducer; Comprise base, elastic body, power transmission steel ball, carry pressure head; The elastic body upper surface respectively has an identical shaped circle to lack the shape recess with carrying pressure head lower surface, and the circle that the power transmission steel ball is assemblied in two correspondences lacks in the shape recess, and said column type elastomer is an integrated member; In the middle strain regions many identical pillars are arranged; The cross sectional shape of pillar is regular polygon or circle, and the cross section circumscribed circle diameter of pillar and the ratio of pillar height are 1: 0.8～1: 3.5, all pillars evenly at interval, be parallel to each other, vertical array is between elastomeric two terminations up and down; The ratio that said steel ball radius and said circle lack the shape radius of notch is 1/3～1/1.1.
Said base and elastomeric bottom are connected.
Pillar in the said strain regions is no less than three, no more than ten six roots of sensation.
As the preferred version of above-mentioned technology, the cross section circumscribed circle diameter of said pillar and the ratio of pillar height are 1: 1.5～1: 2.5.
As the preferred version of above-mentioned technology, the ratio that said steel ball radius and said circle lack the shape radius of notch is 1/2.5～1/1.5.
As the more preferred case of above-mentioned technology, the cross section circumscribed circle diameter of said pillar and the ratio of pillar height are 1: 1.8～1: 2.2.
As the more preferred case of above-mentioned technology, the ratio that said steel ball radius and said circle lack the shape radius of notch is 1/2.2～1/1.6.
The utility model combines the construction features of pillar and two kinds of sensors of double-shear beam type; Elastic body, steel ball and three critical pieces of carrying pressure head are combined; And elastomeric strain regions is designed to many corbelings; Also confirmed the cross section circumscribed circle diameter of pillar and standard ratio and the steel ball radius and the round standard ratio that lacks the shape radius of notch of its height, its advantage applies exists: 1. capacity is big, and volume is little, easy for installation, reset capability is strong; 2. highly sensitive, measuring accuracy is high; 3. lateral force resistance and anti-impact force are strong, excellent working performance and stable, long service life.
Description of drawings
Fig. 1 is the unitary construction synoptic diagram of an embodiment of the utility model.
Fig. 2 is along A-A line cut-open view among Fig. 1.
Among the figure: 1. base, 2. elastic body, 3. pillar, 4. shell, 5. power transmission steel ball, 6. pressure bearing head, 7. circle lacks the shape recess.
Embodiment
Below in conjunction with embodiment/accompanying drawing the utility model is described further.
Like Fig. 1, shown in 2; The utility model polystyle is pressed to the power sensing and is comprised base 1, elastic body 2, power transmission steel ball 5, carries pressure head 6; Elastic body 2 upper surfaces with carry pressure head 6 lower surfaces and respectively have an identical shaped circle to lack shape recess 7, the circle that power transmission steel ball 5 is assemblied in two correspondences lacks in the shape recess 7, the ratio of the scarce shape radius of notch of steel ball radius and said circle is 1/3～1/1.1; Preferred ratio is 1/2.5～1/1.5, and most preferably ratio is 1/2.2～1/1.6.Column type elastomer 2 is integrated members; Many identical pillars 3 are arranged in its middle strain regions, and the cross section circumscribed circle diameter of pillar and the ratio of pillar height are 1: 0.8～1: 3.5, and preferred ratio is 1: 1.5～1: 2.5; Most preferably ratio is 1: 1.8～1: 2.2; This pillar in the strain regions should be no less than three, no more than ten six roots of sensation, and the cross sectional shape of pillar 3 is regular polygon or circle; All pillars 3 evenly at interval, be parallel to each other, vertical array elastic body about in the of 2 in the strain regions between two terminations in; Every pillar surface is pasted with 1-2 strainometer, and all strainometers are composed in series Wheatstone bridge and link with the external signal device, and base 1 is connected with the bottom of elastic body 2.For clear the utility model structure that shows, only shown four pillars in the present embodiment, the cross sectional shape of pillar only is chosen as square, but this is not to be the qualification to the utility model.
This polystyle structure, promptly many pillars in the elastic body strain regions can be made induction to faint variation on the pressure head, and transducer sensitivity is increased substantially; Each pillar is stressed evenly, and anti-side direction and anti-bias load ability are strong; Single pillar sectional area is less, and elastic body thermal treatment is easy, and the intrinsic linear error of each pillar reduces, and the measuring accuracy of sensor is increased substantially.
In the utility model, base 1 is connected with the bottom of elastic body 2, promptly takes welding manner that the bottom of base 1 with elastic body 2 is fixed together, and makes both becoming one structures, and the intensity that has solved bolts assemblies is low, offset, loosening problem easily.
In the utility model; The ratio standard of the cross section circumscribed circle diameter of column and column height when 1: 0.8～1: 3.5 scope; Can guarantee that sensor anti-bias load and lateral force resistance are enough strong; And can improve the synthesis precision of sensor, sensor can reach 0.05%F.S through the minimum synthesis precision of linear compensation, excellent working performance and stable; When the steel ball radius is 1/3～1/1.1 with the round ratio that lacks the shape radius of notch; Steel ball not only can effectively be alleviated the suffered lateral impact forces of sensor; Avoid sensor impaired; And steel ball can reset fast, regulates bearing point automatically, makes the measuring accuracy of sensor, reliability and stability unaffected.
A column section circumscribed circle diameter of confirming in the preferred version and the ratio of pillar height are 1: 1.5～1: 2.5; This is that sensor anti-bias load, lateral force resistance and synthesis precision can reach better ratio range; In this ratio range, sensor can reach 0.02%F.S through the minimum synthesis precision of linear compensation.
The ratio of confirming steel ball radius and the scarce shape radius of notch of said circle in the preferred version is 1/2.5～1/1.5; Such preferred version rolls steel ball in circle lacks the shape recess more flexible; The ability of regulating bearing point is better; When sensor received lateral impact forces, the mitigation that steel ball plays was stronger, and the reset capability of self is better.
When the ratio of a column section circumscribed circle diameter and pillar height was 1: 1.8～1: 2.2, sensor can reach 0.01%F.S through the minimum synthesis precision of linear compensation.
When the steel ball radius was 1/2.2～1/1.6 with the round ratio that lacks the shape radius of notch, steel ball rolled the most flexible in circle lacks the shape recess, and the ability of adjusting bearing point is best, and the strongest to the lateral impact forces mitigation, the reset capability of self is best.
Claims (7)
1. a polystyle is pressed to force transducer; Comprise base, elastic body, power transmission steel ball, carry pressure head; The elastic body upper surface respectively has an identical shaped circle to lack the shape recess with carrying pressure head lower surface, and the circle that the power transmission steel ball is assemblied in two correspondences lacks in the shape recess, and it is characterized in that: said column type elastomer is an integrated member; In the middle strain regions many identical pillars are arranged; The cross sectional shape of pillar is regular polygon or circle, and the cross section circumscribed circle diameter of pillar and the ratio of pillar height are 1: 0.8～1: 3.5, all pillars evenly at interval, be parallel to each other, vertical array is between elastomeric two terminations up and down; The ratio that said steel ball radius and said circle lack the shape radius of notch is 1/3～1/1.1.
2. according to the described sensor of claim 1, it is characterized in that: the pillar in the said strain regions is no less than three, no more than ten six roots of sensation.
3. according to the described sensor of claim 1, it is characterized in that: the cross section circumscribed circle diameter of said pillar and the ratio of pillar height are 1: 1.5～1: 2.5.
4. according to the described sensor of claim 1, it is characterized in that: the cross section circumscribed circle diameter of said pillar and the ratio of pillar height are 1: 1.8～1: 2.2;
5. according to the described sensor of claim 1, it is characterized in that: the ratio that said steel ball radius and said circle lack the shape radius of notch is 1/2.5～1/1.5.
6. according to the described sensor of claim 1, it is characterized in that: the ratio that said steel ball radius and said circle lack the shape radius of notch is 1/2.2～1/1.6.
7. according to the described sensor of any one claim of claim 1 to 6, it is characterized in that: said base and elastomeric bottom are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201047016U CN202471195U (en) | 2012-03-09 | 2012-03-09 | Multi-pillar pressure force sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201047016U CN202471195U (en) | 2012-03-09 | 2012-03-09 | Multi-pillar pressure force sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471195U true CN202471195U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201047016U Expired - Lifetime CN202471195U (en) | 2012-03-09 | 2012-03-09 | Multi-pillar pressure force sensor |
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| Country | Link |
|---|---|
| CN (1) | CN202471195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607676A (en) * | 2012-03-09 | 2012-07-25 | 中航电测仪器股份有限公司 | Polystyle pressing force sensor |
-
2012
- 2012-03-09 CN CN2012201047016U patent/CN202471195U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607676A (en) * | 2012-03-09 | 2012-07-25 | 中航电测仪器股份有限公司 | Polystyle pressing force sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |