CN201297923Y - Thickness tester - Google Patents
Thickness tester Download PDFInfo
- Publication number
- CN201297923Y CN201297923Y CNU2008201685449U CN200820168544U CN201297923Y CN 201297923 Y CN201297923 Y CN 201297923Y CN U2008201685449 U CNU2008201685449 U CN U2008201685449U CN 200820168544 U CN200820168544 U CN 200820168544U CN 201297923 Y CN201297923 Y CN 201297923Y
- Authority
- CN
- China
- Prior art keywords
- iron plate
- thickness
- pedestal
- magnet
- strain transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a thickness tester comprising a probe, a measuring circuit and a reference iron plate, wherein the probe has a structure that a strain sensor provided with a magnet is arranged on a base made of non-ferromagnetic materials; the reference iron plate is arranged below the pin of the base and used for pressing and clamping a measured object between the iron plate and the bottom of the pin of the base in measurement; and the strain sensor is connected with the measuring circuit. The thickness of the object effects the attraction between the magnet and the reference iron plate and can be finally shown by the strain sensor and the measuring circuit. The thickness tester can be also used for measuring the thickness of a coat on the surface of an iron product and can be placed on any position without the limit of the area and the shape of the object because no clamping pin similar to a caliper is needed for measuring in a contact way, thereby realizing the measurement of the wall thickness of objects of large areas and complex shapes.
Description
Technical field
The utility model relates to electronic device, particularly a kind of instrument that is used to measure thickness.
Background technology
At present, the thickness of large tracts of land objects such as sheet material measurement generally is to measure at the edge with slide calliper rule, and the center thickness of object because slide calliper rule can't get at energy measurement not, whether can't discern sheet metal thickness even.In addition, some manufactured goods are because shape limits, and such as the container of pull and stretch, its wall thickness, bottom thickness can't be used kind of calliper.
Summary of the invention
The utility model purpose is to provide a kind of card base contact that do not need, with the instrument of inducing method measurement thickness, to solve the problem that above-mentioned object thickness is measured.
Scheme of the present utility model is: a kind of thicknessmeter, comprise that probe, metering circuit and one are with reference to iron plate, it is characterized in that, the structure of probe is on the pedestal that a nonferromugnetic material is made strain transducer to be installed, the bottom surface of strain transducer and pedestal is parallel, and strain transducer one end is fixed on the footing of pedestal, and magnet is equipped with in unsettled other end top, the two poles of the earth of magnet up and down towards, magnet is perpendicular to strain transducer; Have one with reference to iron plate below the pedestal footing, this iron plate is used for when measuring testee being pressed between the bottom surface that is clipped in reference to iron plate and pedestal footing; Strain transducer and metering circuit are electrically connected.
Air-bubble level also is housed on pedestal, and the reference field of level meter is with parallel with the bottom surface of pedestal.
The utility model has the advantages that: adopt magnet and be clipped in the both sides of testee with reference to iron plate, the size of object thickness, influence magnet and with reference to the spacing size of iron plate, and then influence magnet and with reference to the size of suction between iron plate, because magnet is fixed on the strain transducer, the suction size is converted into electric signal by strain transducer, handles by metering circuit, finally reflects the size of object thickness.Owing to do not need the card base contact measurement of similar slide calliper rule, can be placed on the optional position, not limited by object area, shape, thereby can realize the measurement of large tracts of land object, complicated shape object wall thickness.
In addition, when being used for the thickness measure of ironwork surface coating, as long as with the probe placement of this device on the testee surface, because the carcass of goods is an iron material, the thickness size of its surface coating influences the size of suction between magnet and carcass equally, thereby can measure the thickness of ironwork surface coating.
Description of drawings
The utility model is described in further detail with embodiment with reference to the accompanying drawings below.
Accompanying drawing is a structural representation of the present utility model.
Mark among the figure: 1 magnet, 2 strain transducers, 3 pedestals, 4 with reference to iron plate, 5 testees, 6 lead-in wires, 7 air-bubble levels.
Embodiment
Embodiment comprises probe, with reference to iron plate, metering circuit three parts, the structure of probe is referring to accompanying drawing, its structure is: on the pedestal 3 that metals such as a nonferromugnetic material such as copper, aluminium are made strain transducer 2 is installed, the trend of strain transducer 2 is parallel with the bottom surface of pedestal 3, strain transducer 2 one ends are fixed on the footing of pedestal 3, the other end is unsettled, magnet 1 is equipped with in the top, magnet 1 two very up and down towards, magnet 1 is perpendicular to strain transducer 2, equally also perpendicular to the bottom surface of pedestal 3.
Upper surface at pedestal 3 also is equipped with air-bubble level 7, and the reference field of level meter is with parallel with the bottom surface of pedestal, adjusting level when being used to measure.
Be placed on the below of the footing of pedestal 3 with reference to iron plate 4.
When measuring the thickness of nonferromugnetic material, with reference to iron plate 4 be placed on testee below, probe be placed on testee 5 above, make it to be positioned at reference to directly over the iron plate 4, closely press testee 5 with reference to iron plate 4 and pedestal footing and be clipped in the middle this moment.
Regulate testee 5 and make its placement level, to eliminate the influence of magnet and strain transducer self gravitation variation measuring.
Testee 5 thickness big more, magnet 1 and also big more with reference to the spacing of iron plate 4, suction is more little between them; If testee 5 thickness is more little, magnet 1 and also more little with reference to the spacing of iron plate 4, suction is big more between them.
Above-mentioned suction size is converted into electric signal by strain transducer 2, handles by metering circuit, finally reflects the size of object thickness.
Change along with magnet with reference to the spacing of iron plate, the suction of magnet changes and is index variation, thereby the variation of the signal of strain transducer output is non-linear, so metering circuit need be set to the parameter that tailored index changes, this set is a mature technology, and concrete principle is no longer narrated.
In addition, when being used for the thickness measure of ironwork surface coating, as long as with the probe placement of this device on the testee surface, because the carcass of goods is an iron material, the thickness size of its surface coating influences the size of suction between magnet and carcass equally, according to above-mentioned principle, can measure the thickness of ironwork surface coating.
Claims (2)
1. thicknessmeter, comprise that probe, metering circuit and one are with reference to iron plate, it is characterized in that: the structure of probe is on the pedestal (3) that a nonferromugnetic material is made strain transducer (2) to be installed, the bottom surface of strain transducer (2) and pedestal is parallel, strain transducer (2) one ends are fixed on the footing of pedestal (3), magnet (1) is equipped with in unsettled other end top, the two poles of the earth of magnet (1) up and down towards, magnet (1) is perpendicular to strain transducer (2); Have one with reference to iron plate (4) below the pedestal footing, this iron plate is used for when measuring testee (5) being pressed between the bottom surface that is clipped in reference to iron plate (4) and pedestal (3) footing; Strain transducer (2) and metering circuit are electrically connected.
2. thicknessmeter as claimed in claim 1 is characterized in that: air-bubble level (7) also is housed on pedestal (3), and the reference field of level meter is with parallel with the bottom surface of pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201685449U CN201297923Y (en) | 2008-12-01 | 2008-12-01 | Thickness tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201685449U CN201297923Y (en) | 2008-12-01 | 2008-12-01 | Thickness tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297923Y true CN201297923Y (en) | 2009-08-26 |
Family
ID=41043904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201685449U Expired - Fee Related CN201297923Y (en) | 2008-12-01 | 2008-12-01 | Thickness tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297923Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104823017A (en) * | 2012-11-15 | 2015-08-05 | 沃尔沃卡车公司 | Stroke sensor and fluid spring provided with stroke sensor |
-
2008
- 2008-12-01 CN CNU2008201685449U patent/CN201297923Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104823017A (en) * | 2012-11-15 | 2015-08-05 | 沃尔沃卡车公司 | Stroke sensor and fluid spring provided with stroke sensor |
| US9649904B2 (en) | 2012-11-15 | 2017-05-16 | Volvo Truck Corporation | Stroke sensor and fluid spring with stroke sensor |
| CN104823017B (en) * | 2012-11-15 | 2018-03-23 | 沃尔沃卡车公司 | Stroke sensor and the fluid spring with stroke sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20101201 |