CN209689572U - A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring - Google Patents
A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring Download PDFInfo
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- CN209689572U CN209689572U CN201920367634.9U CN201920367634U CN209689572U CN 209689572 U CN209689572 U CN 209689572U CN 201920367634 U CN201920367634 U CN 201920367634U CN 209689572 U CN209689572 U CN 209689572U
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- length spring
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Abstract
The utility model relates to a kind of sensors applied to the micro- distortion measurement of zero-initial-length spring, including test bracket, accurate photoelectricity microspur tester, bearing edge, crossbeam, quartz glass plate and hang weight, test bracket installs accurate photoelectricity microspur tester, the plate upper surface of test bracket installs the bearing edge being vertically arranged, one horizontally disposed crossbeam is installed on the bearing edge, quartz glass plate is pasted in the left end upper surface of the crossbeam, which is located at the lower section of the optic probe of accurate photoelectricity microspur tester；The extension weight of the right end lower surface suspension constant weight of crossbeam.The utility model is a kind of design science, the high-precision micro displacement detection device structurally reasonable, easy to use applied to zero-initial-length spring performance detection, it is capable of the micro-displacement variation of accurate sensitive zero-initial-length spring using mechanism, electric signal is converted by the variation of gravitation information, realize the precise measurement of micro-displacement, the performance detection suitable for all kinds of zero-initial-length springs.
Description
Technical field
The utility model relates to the measuring devices in gravimeter technical field, especially a kind of to be applied to zero-initial-length spring
The sensor of micro- distortion measurement.
Background technique
Zero-initial-length spring is the core component of current gravimeter, it is by converting position for the variation of microgravity information
Shifting amount converts electric signal output for this signal by sensor to realize the precise measurement of gravitation information.Therefore, zero-initial-length spring
Performance level directly determine the performance of gravimeter.The micro- deformation of precise measurement zero-initial-length spring is to have to the work of research
Make.Since the variation of gravitation information is very faint, it is difficult directly to measure.And the variation of the corresponding spring displacement amount of earth tide exists
10nm, displacement detecting means all at present are unable to reach the required precision, it is therefore desirable to develop one kind and be able to satisfy requirement
New test equipment.
Utility model content
The purpose of this utility model is that being provided a kind of applied to the micro- shape of zero-initial-length spring in place of making up the deficiencies in the prior art
Become measurement sensor, the sensor can the micro- deformation of precise measurement zero-initial-length spring, realize the micro- deformation of zero-initial-length spring it is straight
Measurement is connect, the long-term creep behaviour of intuitive accurately evaluation zero-initial-length spring.
The purpose of this utility model is realized by following technological means:
A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring, it is characterised in that: including test bracket, precise light
Electric microspur tester, bearing edge, crossbeam, quartz glass plate and extension weight, test bracket is by bottom plate, left installing rack and right installing rack
It constitutes, left installing rack and right installing rack are installed in the left and right sides of plate upper surface respectively, and installation is vertically arranged in left installing rack
Accurate photoelectricity microspur tester, right installing rack with zero-initial-length spring top for connecting；
The bearing edge being vertically arranged is installed in the upper surface of bottom plate, installs a horizontally disposed cross on the bearing edge
Quartz glass plate is pasted in beam, the left end upper surface of the crossbeam, which is located at the optics of accurate photoelectricity microspur tester
The lower section of probe；The right end of crossbeam produces the hole that weight is hung in assembly, and hangs one in crossbeam lower surface according to the requirement of balance of crossbeam
Determine the extension weight of weight.
Moreover, the photoelectricity microspur tester is made of optic probe, fiber optic cable and test software.
Moreover, the bottom surface of the crossbeam designs a groove, the upper end of bearing edge is located in the groove.
Moreover, the junction of the bearing edge and crossbeam is supporting point, the position selection of the supporting point depends on surveying
Precision required for trying, the supporting point position of this programme select left and right distance proportion for the position of 10:1.
Moreover, the crossbeam is made by titanic alloy machining, the finish of crossbeam groove need to less than 0.8 μm,
And handled using the technique manually polished, crossbeam is heat-treated after processing according to regulation program, test after having handled
The finish of its corresponding position.
Moreover, the quartz glass plate is quartz glass reflector plate.
Moreover, extension weight, zero-initial-length spring and the crossbeam takes screw to be fixed together, the adjusting needs for hanging heavy amount are abided by
Two principle is followed, a need guarantee crossbeam severity, and two are the need to ensure that spring within the scope of the elongation tested.
Moreover, the test bracket, accurate photoelectricity microspur tester, bearing edge, crossbeam, quartz glass plate and extension weight
It is both placed in High Accuracy Constant Temperature constant-voltage equipment.
The advantages and positive effects of the utility model are as follows:
1, resolution ratio is significantly improved.It is verified by full-scale test, the utility model can reach the resolution ratio of 1nm.For
The test data that zero-initial-length spring carries out shows: the accurate test of 1nm displacement variable can be realized by the test device.
2, applicability is good.In the utility model, used mechan-amplifier device, principle is simple and reliable, and can basis
The leverage of practical selected optic probe accuracy Design different amplification, has very strong applicability.
3, realizability is good.In the utility model, the device is by change in displacement caused by the variation of same gravitation information
10 times of amount amplification, it is easier to realize the accurate monitoring of gravitation information.
4, in the present invention, due to using the mechanical device, the requirement for peripheral temperature control system is reduced, is had
There is certain anti-interference ability.
5, the utility model is a kind of design science, structurally reasonable, easy to use is applied to zero-initial-length spring performance detection
High-precision micro displacement detection device, changed using the micro-displacement that mechanism is capable of accurate sensitive zero-initial-length spring, gravity believed
The variation of breath is converted into electric signal, realizes the precise measurement of micro-displacement, and 1nm change in displacement may be implemented by this test device
The accurate continuous monitoring of amount, the performance detection suitable for all kinds of zero-initial-length springs.
Detailed description of the invention
Fig. 1 is the schematic diagram of zero-initial-length spring micro-deformation measuring device；
Fig. 2 is the schematic three dimensional views of zero-initial-length spring measuring mechanism.
Specific embodiment
Embodiment of the utility model will be described in detail below with reference to the attached drawings, it should be noted that the present embodiment is narrative
, it is not restrictive, protection scope of this utility model cannot be limited by this.
A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring, including test bracket 2, accurate photoelectricity microspur test
Instrument 1, bearing edge 9, crossbeam 5, quartz glass plate 4 and extension weigh 10.Test bracket is by bottom plate 11, left installing rack 3 and right installing rack 7
It constitutes, left installing rack and right installing rack are installed in the left and right sides of plate upper surface respectively, and installation is vertically arranged in left installing rack
Accurate photoelectricity microspur tester, the photoelectricity microspur tester are made of optic probe, fiber optic cable and test software.Right installing rack
For being connect with zero-initial-length spring top.
The bearing edge being vertically arranged is installed in the upper surface of bottom plate, places a horizontally disposed cross on the bearing edge
Beam, it may be assumed that the bottom surface of crossbeam designs a groove, and the upper end of bearing edge is located in the groove.The appropriate position in the centre of crossbeam
Placement location supporting point, it may be assumed that the junction of bearing edge and crossbeam is supporting point.Fulcrum is reasonably selected according to actual needs,
The supporting point position selection depend on test required for precision, the supporting point position of this programme select left and right distance proportion for
The position of 10:1.
The very high quartz glass plate of finish is pasted in the left end upper surface of crossbeam, and (quartz glass plate is quartz glass reflection
Piece), which is located at the lower section of the optic probe of accurate photoelectricity microspur tester.
The right end of crossbeam produces the hole that weight is hung in assembly, and hangs certain weight in crossbeam lower surface according to the requirement of balance of crossbeam
The upper surface of the extension weight of amount, crossbeam right end is connected with 8 bottom end of zero-initial-length spring, and zero-initial-length spring top is fixed in right installing rack, protects
Card spring works vertically, it is desirable that the verticality on axle of spring and installation ground is within 0.01mm.
Photoelectricity microspur tester normally connects, and the position of optic probe is adjusted according to test scope, so that light intensity is 90%
More than, the distance between probe and reflecting surface are near the intermediate value of the test scope of photoelectricity microspur tester.Fulcrum is installed, is guaranteed
Groove of the position of the edge of a knife designed by crossbeam.Adjustment spring hangs weight, guarantees that crossbeam and the depth of parallelism on installation ground exist
Within 0.01mm.
Crossbeam is made by titanic alloy machining, and the finish of crossbeam groove need to be thrown less than 0.8 μm, and using artificial
The technique of light is handled, and crossbeam is heat-treated after processing according to regulation program, tests its corresponding position after having handled
Finish.
Zero-initial-length spring and spring, which are hung, realizes connection by designing special hook again, hangs weight, zero-initial-length spring and crossbeam and adopts
Screw is taken to be fixed together, the adjusting for hanging heavy amount needs to follow two principle, and a need guarantee crossbeam severity, second is that needing
Guarantee spring within the scope of the elongation tested.
By above-mentioned test bracket, accurate photoelectricity microspur tester, bearing edge, crossbeam, quartz glass plate and hang heavy equal
It is placed in the required High Accuracy Constant Temperature constant-voltage equipment 6 of test, signal will be tested by optical fiber and drawn.Accurate photoelectricity microspur test
Instrument can accurately measure out the variation of the distance between probe and crossbeam upper glass plate, and zero-initial-length spring is calculated according to lever principle
The miniature deformation of vertical direction, resolving power are better than 1nm.The utility model is a kind of design science, structurally reasonable, easy to use
The sensor that can be applied to the measurement micro- deformation of zero-initial-length spring, can effectively be measured using the present apparatus due to long-term creep, gravity
The miniature deformation of zero-initial-length spring caused by the reasons such as abnormal, can the multinomial performance index to zero-initial-length spring examine.
The working principle of the utility model are as follows:
Accurate photoelectricity microspur tester is fixed on bracket, the displacement variable of real-time monitoring one end of the beam, and crossbeam is another
End is fixedly connected with zero-initial-length spring lower end, is leveled crossbeam by fulcrum.According to the principle of lever amplification, zero-initial-length spring end hangs weight
The displacement generated due to Gravity changer can make the position of crossbeam that variation up and down occur, which passes through 10 times of lever
Amplification can be embodied in the change in displacement of the crossbeam other end, which is finally measured by photoelectricity microspur tester, pass through conversion
The miniature deformation amount that spring can be obtained, due to taking this kind of testing scheme, so that the measuring accuracy of spring improves nearly one
The order of magnitude, therefore be a kind of high-precision sensor of effective test micro- deformation of spring.
The utility model is to be amplified spring micro-displacement variable quantity caused by by gravity using the principle of lever, is made
Obtaining the displacement variable can be achieved direct follow-on test under the conditions of current anallatic technical level, reduce to spring
The difficulty that can be tested, while also reducing the requirement to environment.The purpose of this utility model be in a limited space in, certain
Constant temperature and pressure device under conditions of, promoted as far as possible by the device micro-displacement test resolution ratio.The main needle of this programme
The high-precision sensor of the micro- deformation of zero-initial-length spring is designed.
The utility model provides a kind of high precision displacement that can be realized directly continuous precise measurement micro-displacement variation
Measuring device has high displacement resolution its main feature is that can be realized the direct measurement of micro-displacement, and structure is reliable, implements
Simplicity, significant effect.
Claims (8)
1. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring, it is characterised in that: including test bracket, accurate photoelectricity
Microspur tester, bearing edge, crossbeam, quartz glass plate and extension weight, test bracket is by bottom plate, left installing rack and right installing rack structure
At left installing rack and right installing rack are installed in the left and right sides of plate upper surface respectively, and the essence being vertically arranged is installed in left installing rack
Close photoelectricity microspur tester, right installing rack with zero-initial-length spring top for connecting；
The bearing edge being vertically arranged is installed in the upper surface of bottom plate, installs a horizontally disposed crossbeam on the bearing edge, should
Quartz glass plate is pasted in the left end upper surface of crossbeam, which is located at the optic probe of accurate photoelectricity microspur tester
Lower section；The right end of crossbeam produces the hole that weight is hung in assembly, and hangs constant weight in crossbeam lower surface according to the requirement of balance of crossbeam
Extension weight.
2. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
The photoelectricity microspur tester stated is made of optic probe, fiber optic cable and test software.
3. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
The bottom surface for the crossbeam stated designs a groove, and the upper end of bearing edge is located in the groove.
4. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 3, it is characterised in that: institute
The junction of the bearing edge and crossbeam stated is supporting point, and the position selection of the supporting point depends on precision required for testing,
The supporting point position of this programme selects left and right distance proportion for the position of 10:1.
5. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
The crossbeam stated is made by titanic alloy machining, and the finish of crossbeam groove need to be less than 0.8 μm, and using manually polishing
Technique is handled, and crossbeam is heat-treated after processing according to regulation program, and the bright and clean of its corresponding position is tested after having handled
Degree.
6. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
The quartz glass plate stated is quartz glass reflector plate.
7. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
Extension weight, zero-initial-length spring and the crossbeam stated take screw to be fixed together, and the adjusting for hanging heavy amount needs to follow two principle, and one
It need to guarantee crossbeam severity, two are the need to ensure that spring within the scope of the elongation tested.
8. a kind of sensor applied to the micro- distortion measurement of zero-initial-length spring according to claim 1, it is characterised in that: institute
Test bracket, accurate photoelectricity microspur tester, bearing edge, crossbeam, quartz glass plate and the extension stated are both placed in high-precision again
In constant temperature and pressure device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367634.9U CN209689572U (en) | 2019-03-22 | 2019-03-22 | A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920367634.9U CN209689572U (en) | 2019-03-22 | 2019-03-22 | A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring |
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| Publication Number | Publication Date |
|---|---|
| CN209689572U true CN209689572U (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920367634.9U Active CN209689572U (en) | 2019-03-22 | 2019-03-22 | A kind of sensor applied to the micro- distortion measurement of zero-initial-length spring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323433A (en) * | 2022-01-14 | 2022-04-12 | 河南省计量科学研究院 | Supersound bolt stress appearance calibrating device |
-
2019
- 2019-03-22 CN CN201920367634.9U patent/CN209689572U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323433A (en) * | 2022-01-14 | 2022-04-12 | 河南省计量科学研究院 | Supersound bolt stress appearance calibrating device |
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