CN206430838U - unidirectional shear stress shaft pin sensor - Google Patents
unidirectional shear stress shaft pin sensor Download PDFInfo
- Publication number
- CN206430838U CN206430838U CN201621227823.9U CN201621227823U CN206430838U CN 206430838 U CN206430838 U CN 206430838U CN 201621227823 U CN201621227823 U CN 201621227823U CN 206430838 U CN206430838 U CN 206430838U
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- China
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- elastomer
- blind hole
- axis
- shaft pin
- shear stress
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Abstract
The utility model discloses a kind of unidirectional shear stress shaft pin sensor, including elastomer and strain gauge, elastomer as pivot pin body, the axial direction of the elastomer is provided with a blind hole, the axis of blind hole is overlapped with the axis of elastomer, the external cylindrical surface of elastomer is provided with two identical and interval annular grooves, four stress gauges are pasted with the inwall of blind hole, two strains are calculated as one group and are located at the same radial line two ends of blind hole respectively, the radial line crosses the center line of an annular groove, and two radial lines residing for four stress gauges are parallel；The blind hole openend of elastomer is flange arrangement, and the both sides of flange are anti-rotation plane, and two planes are parallel, and closeouts are housed in the opening of blind hole.The utility model protective is good, is difficult to be corroded, long lifespan, and adaptation is installed and used in outdoor environment, and can for a long time be used in adverse circumstances.
Description
Technical field
The utility model belongs to force snesor, refers to a kind of shaft pin sensor for being used to measure unidirectional shear stress.
Background technology
At present, shaft pin sensor is due to integrating carrier and force snesor, and it is widely used in the survey of shear stress
Place is measured, unidirectional shear stress shaft pin sensor is applied to electronic crane scale, electronics driving title etc. above.Existing unidirectional shearing should
Power shaft pin sensor includes elastomer and strain gauge, and elastomer is provided with radial blind holes, strain gauge on the body of rod as the body of pivot pin
Bottom hole is pasted onto, aperture is blocked with colloid.This shaft pin sensor is mostly using good environment indoors, in outdoor, particularly
Just easily aging is used under such adverse circumstances on goat, precision declines, and the life-span is shorter.
The content of the invention
The purpose of this utility model is to overcome existing unidirectional shear stress shaft pin sensor to be not suitable in outdoor application
Deficiency, proposes a kind of adapt in outdoor environment and the unidirectional shear stress shaft pin sensor that can for a long time be used in adverse circumstances.
Realizing the technical scheme of above-mentioned purpose is：A kind of unidirectional shear stress shaft pin sensor, including elastomer and strain
Meter, elastomer as pivot pin body, it is characterised in that the axial direction of the elastomer is provided with a blind hole, the axis of blind hole with
The axis of elastomer is overlapped, and the external cylindrical surface of elastomer, which is provided with two identical and interval annular grooves, the inwall of blind hole, to be glued
Four stress gauges are posted, two strains are calculated as one group and are located at the same radial line two ends of blind hole respectively, and the radial line crosses a ring
The center line of shape groove, two radial lines residing for four stress gauges are parallel；The blind hole openend of the elastomer is flange arrangement, flange
Both sides be anti-rotation plane, two planes are parallel, and closeouts are housed in the opening of the blind hole.
Further, the anti-rotation plane is parallel with the radial line where the strain gauge.
Further, the other end of the elastomer has one to cross axis and perpendicular to the limiting through hole of axis.
The utility model is on the blind hole inner hole wall of elastomer due to strain gauge, it is to avoid contact with external environment,
Protective is good, is difficult to be corroded, long lifespan, therefore adapts to install and use in outdoor environment, and can for a long time make in adverse circumstances
With.
Brief description of the drawings
The schematic perspective view of Fig. 1 the utility model one embodiment.
Fig. 2 is the partial sectional view of embodiment illustrated in fig. 1.
Fig. 3 is Fig. 2 sectional view.
Fig. 4 the utility model use state sectional views.
In figure：1. elastomer, 2. blind holes, 3. annular grooves, 4. strain gauges, 5. flanges, 501. anti-rotation planes, 6. is spacing logical
Hole, 7. closeouts, 8. water joints, 9. cables, 10. are hinged workpiece A, and 11. are hinged workpiece B.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1-Figure 3, the utility model include elastomer 1 and strain gauge 4, elastomer 1 as pivot pin body.With
The difference of prior art is：The axial direction of elastomer 1 is provided with a blind hole 2, and the axis of blind hole 2 is overlapped with the axis of elastomer 1,
The external cylindrical surface of elastomer 1 is provided with two identical and interval annular grooves 3, the inwall of blind hole 2 and is pasted with four stress gauges
4, each two is the same radial line two that two strain gauges 4 in one group, one group are located at blind hole 2 respectively in this four stress gauges
End, the radial line crosses the center line of an annular groove 3, and two radial lines residing for four stress gauges 4 are parallel (as shown in Figure 3)；Blind hole 2
Openend is flange 5, and the both sides of flange 5 are anti-rotation plane 501, and two planes are parallel, and closeouts are housed in the opening of blind hole 2
7。
In the present embodiment, anti-rotation plane 501 is parallel with the radial line where strain gauge 4.It is this to be designed to make this practicality new
In the detection, strain gauge 4 can fully sense the deformation of elastomer 1 to type, improve the precision of measurement.
In the present embodiment, the other end of elastomer 1 has one to cross axis and perpendicular to the limiting through hole 6 of axis.It is spacing logical
Hole 6 is after the utility model is arranged on and is hinged on workpiece, to be located by a spacer pin, prevent axial float.
As Figure 1-Figure 2, the arc surface position of flange 5 is additionally provided with a through hole, the through hole and is provided with water joint
8, for the cable 9 through connection strain gauge 4.
As shown in figure 4, when the utility model is installed on the workpiece (be hinged workpiece A10, be hinged workpiece B11) being hinged,
Anti-rotation plane 501 on flange 5 is fitted with being hinged workpiece A10 plane, you can prevent the utility model from rotating, and also ensure that should
Upright state can be in all the time by becoming meter 4, measurement is reached high accurancy and precision.
Claims (3)
1. a kind of unidirectional shear stress shaft pin sensor, including elastomer and strain gauge, elastomer is as the body of pivot pin, and it is special
Levy and be, the axial direction of the elastomer is provided with a blind hole, and the axis of blind hole is overlapped with the axis of elastomer, elastomer it is cylindrical
Cylinder is provided with two identical and interval annular grooves, the inwall of blind hole and is pasted with four stress gauges, and two strains are calculated as one
Group and the same radial line two ends for being located at blind hole respectively, the radial line cross the center line of an annular groove, two residing for four stress gauges
Bar radial line is parallel；The blind hole openend of the elastomer is flange arrangement, and the both sides of flange are anti-rotation plane, and two planes are put down
OK, closeouts are housed in the opening of the blind hole.
2. according to the unidirectional shear stress shaft pin sensor described in claim 1, it is characterised in that：The anti-rotation plane with it is described
Radial line where strain gauge is parallel.
3. according to the unidirectional shear stress shaft pin sensor described in claim 1, it is characterised in that：The other end of the elastomer
There is one to cross axis and perpendicular to the limiting through hole of axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621227823.9U CN206430838U (en) | 2016-11-05 | 2016-11-05 | unidirectional shear stress shaft pin sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621227823.9U CN206430838U (en) | 2016-11-05 | 2016-11-05 | unidirectional shear stress shaft pin sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206430838U true CN206430838U (en) | 2017-08-22 |
Family
ID=59588613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621227823.9U Active CN206430838U (en) | 2016-11-05 | 2016-11-05 | unidirectional shear stress shaft pin sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206430838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844666A (en) * | 2018-05-14 | 2018-11-20 | 南京农业大学 | A kind of tractor suspension device for measuring force |
-
2016
- 2016-11-05 CN CN201621227823.9U patent/CN206430838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844666A (en) * | 2018-05-14 | 2018-11-20 | 南京农业大学 | A kind of tractor suspension device for measuring force |
| CN108844666B (en) * | 2018-05-14 | 2023-10-24 | 南京农业大学 | Tractor hangs force measurement device |
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