CN201335794Y - Measuring instrument of Young modulus - Google Patents
Measuring instrument of Young modulus Download PDFInfo
- Publication number
- CN201335794Y CN201335794Y CN 200820224989 CN200820224989U CN201335794Y CN 201335794 Y CN201335794 Y CN 201335794Y CN 200820224989 CN200820224989 CN 200820224989 CN 200820224989 U CN200820224989 U CN 200820224989U CN 201335794 Y CN201335794 Y CN 201335794Y
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- platform
- tripodia
- micrometer caliper
- groove plate
- support frame
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Abstract
The utility model discloses a measuring instrument of Young modulus, which comprises a support frame, a locating groove plate, a locating body, a three-foot platform, a horizontal adjusting device, a value displaying device and a horizontal indicating device, wherein, the locating groove plate is fixed on the support frame; the locating body is arranged in a guiding groove of the locating groove plate, and is fixedly connected with a lower chuck; the horizontal adjusting device is used for adjusting the three-foot platform in a horizontal state; the value displaying device is used for displaying the moving distance value of the three-foot platform; the horizontal indicating device is used for indicating the horizontal state of the three-foot platform; and the three-foot platform is provided with three support feet, one of the support feet is arranged on the horizontal adjusting device, and the other two support feet are arranged on the locating body. The measuring instrument not only can measure the Young modulus of the tested material accurately, but also has convenient use and low cost, and is suitable to use as the experiment equipment for students.
Description
Technical field
The utility model relates to the surveying instrument technical field, relates in particular to a kind ofly to measure the dependent variable of measured material by changing stress, thereby determines the instrument of the elastic modulus of measured material.
Background technology
Young modulus is exactly an elastic modulus, is a notion in the mechanics of materials.Poplar (ThomasYoung1773～1829) is the Britain physicist, 1807, the definition of elastic modulus is proposed, and in order to commemorate him, back people claims that elastic modulus is a Young modulus.
At present, known modulus measurer has tens kinds, mainly adopts two kinds of measuring methods: static method and dynamic method.Should each have their own strong point, also each have their own shortcoming.Dynamic method is that measured material is excited into the shear wave vibration, measures the test specimen resonant frequency, obtains Young modulus then, and the required electronic equipment of this kind method is many and numerous and diverse, has influenced the understanding of student to physical problem.Static method mainly is a pulling method.Though the optical interference method can accurately be measured dependent variable, cost is higher.For the device that uses optical lever, mirror chi group measuring steel wire elongation, from range of telescope, seek scale and look like to become maximum difficult point, if in measuring process, bumped mirror chi group, can cause and measure inaccurately, the adjusting instrument of perhaps having to again, remeasure.
The utility model content
Technical problem to be solved in the utility model is: a kind of modulus measurer is provided, and this measuring instrument not only can accurately be measured the Young modulus of measured material, and easy to use, cheap, and the experiment equipment that is suitable as very much the student uses.
For solving the problems of the technologies described above, the technical solution of the utility model is: modulus measurer comprises bracing frame; The upper grip that is used for fixing the measured material upper end, described upper grip is fixed on the support frame as described above; The lower chuck that is used for fixing the measured material bottom; Positioning groove plate, described positioning groove plate is fixed on the support frame as described above; Positioning body, described positioning body is slidingly mounted in the gathering sill of described positioning groove plate, and fixedlys connected with described lower chuck; The tripodia platform; Be used to adjust the level(l)ing device that described tripodia platform is in horizontality; Be used to read the data fetch device of the numerical value of described tripodia platform displacement; Be used to indicate the horizontal indicating device of described tripodia platform horizontality; Described tripodia platform is provided with three and supports foot, and wherein, one is supported sufficient being placed on the described level(l)ing device, and in addition two are supported foot and are placed on the described positioning body.
Wherein, described level(l)ing device comprises stationary platform, and described stationary platform is fixed on the support frame as described above; Micrometer caliper, described micrometer caliper comprises rotation section and fixed part, the fixed part of micrometer caliper is installed on the described stationary platform; One of described tripodia platform is supported foot and is placed on the rotation section of described micrometer caliper; Described display device is arranged on the scale on the described micrometer caliper.
Wherein, described horizontal indicating device is the laser level indicator, and described laser level indicator comprises laser instrument, the single hole optical screen, and catoptron, described catoptron are arranged on the described tripodia platform.
After having adopted technique scheme, the beneficial effects of the utility model are:
1, thoroughly changed the problem that old-fashioned modulus measurer is regulated difficulty.Form a high-precision laser level indicator with devices such as laser instrument, single hole optical screen, catoptrons, make the tripodia platform be in horizontality by the adjustable screw mircrometer gauge before measuring.After changing the weight of counterweight, the length of measured material will change, make the tripodia platform get back to horizontality once more by the adjustable screw mircrometer gauge, promptly read the distance that the tripodia platform moves, and then draw the variation of measured material length from the variation of micrometer caliper scale.Owing to used laser instrument, laser facula to be easy to observe, this makes whole debugging and measuring process very simple and direct directly perceived, is convenient to clear and definite its physical significance of student.
2, avoided misdata and measure inaccurate problem.Because the student does not re-use mirror chi group and carries out reading, the problem of having bumped mirror chi group in measuring process can not occur being similar to yet, can avoid misdata effectively.
3, reduced the instrument cost.Add a little DC power supply with laser pen, both can be used as laser instrument and used, reduced instrument cost, make the instrument cost lower.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the structural principle synoptic diagram of the utility model embodiment;
Among the figure: A. measured material, 11. upper grips, 12. lower chucks, 13. positioning groove plate, 14. positioning bodies, 21. tripodia platforms, 22. stationary platform, 23. micrometer calipers, 231. fixed parts, 232. the rotation section, 233. gib screws, 234. supporting bases, 24. support foot, 30. counterweights, 41. laser instruments, 42. the single hole optical screen, 43. catoptrons.
Embodiment
As shown in drawings, a kind of modulus measurer, it comprises the bracing frame (not shown), the upper end of measured material A is fixing with upper grip 11, the bottom of measured material A is fixing with lower chuck 12, described upper grip 11 is fixed on the support frame as described above, and during student experimenting, measured material A is generally steel wire.
Positioning groove plate 13 is fixed on the described bracing frame, positioning body 14 is slidingly mounted in the gathering sill of described positioning groove plate 13, lower chuck 12 is fixedlyed connected with positioning body 14, counterweight 30 is articulated on the positioning body 14, because positioning body 14 is limited in the gathering sill of positioning groove plate 13, positioning body 14 can only slide up and down, therefore, when changing the weight of counterweight, measured material A can not produce yet and rock, and then guarantees the stable of tripodia platform 21 and catoptron 43.
Also be provided with a stationary platform 22 on the support frame as described above, stationary platform 22 is used to install micrometer caliper 23.Described micrometer caliper 23 comprises rotation section 232 and fixed part 231, and supporting base 234 and gib screw 233 are installed on the fixed part 231 of micrometer caliper on the stationary platform 22.The effect of micrometer caliper 23 is to adjust tripodia platform 21 to be in horizontality, and micrometer caliper 23 is provided with scale, and described scale is used for showing the numerical value of tripodia platform 21 displacements, and this numerical value equates with the variation of measured material A length.
Tripodia platform 21 is provided with three and supports foot 24, and wherein, one is supported foot and is placed on the rotation section 232 of micrometer caliper; In addition two are supported foot and are placed on the positioning body 14.When changing the weight of counterweight, the length of measured material A can change, and this variation meeting is reflected on the tripodia platform 21 by positioning body 14, thereby has changed the horizontality of tripodia platform 21.
Laser level indicator 40 is used to indicate tripodia platform 21 whether to be in horizontality.Described laser level indicator 40 comprises laser instrument 41, single hole optical screen 42, and catoptron 43, described catoptron 43 is arranged on the tripodia platform 21.Laser instrument 41 is by the aperture outgoing laser beam at single hole optical screen 42 centers, laser beam arrives catoptron 43, whether the laser beam that catoptron 43 reflects forms hot spot on single hole optical screen 42, overlap with the center of aperture according to spot center, judges whether level of tripodia platform 21.The precision height of laser level indicator 40, easy to use, laser facula is easy to observe, and this makes whole debugging and measuring process very simple and direct directly perceived, is convenient to clear and definite its physical significance of student.Certainly, if on tripodia platform 21 bubble is set, also can reach the effect of indication horizontality, only measuring accuracy can't compare favourably with the laser level indicator.
Principle of work:
Before the measurement, regulate tripodia platform 21 levels earlier, at this moment, the spot center that is reflected by catoptron 43 overlaps with the aperture center of single hole optical screen 42.The length that adds measured material A behind (subtracting) counterweight changes, tripodia platform 21 1 ends decline (or rising), tripodia platform 21 is level no longer, spot center rising (or decline), by adjusting the other end decline (or rising) that micrometer caliper 23 makes tripodia platform 21, spot center is got back to the position that overlaps with the aperture center of single hole optical screen 42 again, and tripodia platform 21 is level again.The variation that can draw measured material A length from the variation of micrometer caliper 23 scales.According to the Mass Calculation pulling force of adding counterweight, survey steel wire diameter with micrometer caliper again, meter ruler is surveyed steel wire length, can calculate the Young modulus of measured material A.
The utility model is not limited to above-mentioned concrete embodiment, and in fact, the modulus measurer that the utility model disclosed has comprised a kind of method of measuring the length minor alteration, compares with known technology, and the method is simpler and more direct, more accurate.It is not only applicable to, and measuring steel wire stretches, metal bar thermal expansion equal length minor alteration, also can be used for the micro-displacement of Measuring Object position along straight line, as long as the indicating status of the horizontal indicating device of correct design, and the horizontality of regulating the tripodia platform with level(l)ing device, by measuring the distance of tripodia platform translation between twice identical indicating status of horizontal indicating device, just can determine the micro-displacement that object moves along straight line.
Claims (4)
1. modulus measurer comprises
Bracing frame;
The upper grip that is used for fixing the measured material upper end, described upper grip is fixed on the support frame as described above;
The lower chuck that is used for fixing the measured material bottom; It is characterized in that: described measuring instrument also comprises positioning groove plate, and described positioning groove plate is fixed on the support frame as described above;
Positioning body, described positioning body is slidingly mounted in the gathering sill of described positioning groove plate, and fixedlys connected with described lower chuck;
The tripodia platform;
Be used to adjust the level(l)ing device that described tripodia platform is in horizontality;
Be used to read the data fetch device of the numerical value of described tripodia platform displacement;
Be used to indicate the horizontal indicating device of described tripodia platform horizontality;
Described tripodia platform is provided with three and supports foot, and wherein, one is supported sufficient being placed on the described level(l)ing device, and in addition two are supported foot and are placed on the described positioning body.
2. modulus measurer as claimed in claim 1 is characterized in that:
Described level(l)ing device comprises
Stationary platform, described stationary platform is fixed on the support frame as described above;
Micrometer caliper, described micrometer caliper comprises rotation section and fixed part, the fixed part of micrometer caliper is installed on the described stationary platform;
One of described tripodia platform is supported foot and is placed on the rotation section of described micrometer caliper;
Described display device is arranged on the scale on the described micrometer caliper.
3. modulus measurer as claimed in claim 1 is characterized in that: described horizontal indicating device is the laser level indicator.
4. modulus measurer as claimed in claim 3 is characterized in that: described laser level indicator comprises
Laser instrument;
The single hole optical screen;
Catoptron, described catoptron are arranged on the described tripodia platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820224989 CN201335794Y (en) | 2008-12-04 | 2008-12-04 | Measuring instrument of Young modulus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820224989 CN201335794Y (en) | 2008-12-04 | 2008-12-04 | Measuring instrument of Young modulus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201335794Y true CN201335794Y (en) | 2009-10-28 |
Family
ID=41287449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820224989 Expired - Fee Related CN201335794Y (en) | 2008-12-04 | 2008-12-04 | Measuring instrument of Young modulus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201335794Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176022A (en) * | 2011-01-27 | 2011-09-07 | 哈尔滨工业大学 | Multi-beam laser heterodyne distance measurement device and method for measuring young modulus by adopting device |
| CN102221502A (en) * | 2011-05-31 | 2011-10-19 | 哈尔滨工业大学 | Multi-beam laser heterodyne second harmonic Young modulus measurement method |
| CN103353274A (en) * | 2013-07-22 | 2013-10-16 | 山东交通学院 | Giant magnetoresistance effect based displacement measuring apparatus and young modulus measuring method |
| CN103940677A (en) * | 2014-05-15 | 2014-07-23 | 黑龙江大学 | Device and method for measuring Young modulus by virtue of linear-frequency-modulation multi-beam laser heterodyne |
| CN104990507A (en) * | 2015-07-11 | 2015-10-21 | 赵杰 | Object length minimal change fine measurement device |
| CN110231227A (en) * | 2019-06-13 | 2019-09-13 | 四川大学 | Steel wire Young's modules instrument levelling device |
-
2008
- 2008-12-04 CN CN 200820224989 patent/CN201335794Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102176022A (en) * | 2011-01-27 | 2011-09-07 | 哈尔滨工业大学 | Multi-beam laser heterodyne distance measurement device and method for measuring young modulus by adopting device |
| CN102221502A (en) * | 2011-05-31 | 2011-10-19 | 哈尔滨工业大学 | Multi-beam laser heterodyne second harmonic Young modulus measurement method |
| CN102221502B (en) * | 2011-05-31 | 2012-10-31 | 哈尔滨工业大学 | Multi-beam laser heterodyne second harmonic Young modulus measurement method |
| CN103353274A (en) * | 2013-07-22 | 2013-10-16 | 山东交通学院 | Giant magnetoresistance effect based displacement measuring apparatus and young modulus measuring method |
| CN103353274B (en) * | 2013-07-22 | 2016-01-27 | 山东交通学院 | Based on the displacement measuring device of giant magnetoresistance effect and the measuring method of Young modulus |
| CN103940677A (en) * | 2014-05-15 | 2014-07-23 | 黑龙江大学 | Device and method for measuring Young modulus by virtue of linear-frequency-modulation multi-beam laser heterodyne |
| CN103940677B (en) * | 2014-05-15 | 2016-03-02 | 黑龙江大学 | Linear frequency modulation multi-beam laser heterodyne measures device and the measuring method of Young modulus |
| CN104990507A (en) * | 2015-07-11 | 2015-10-21 | 赵杰 | Object length minimal change fine measurement device |
| CN110231227A (en) * | 2019-06-13 | 2019-09-13 | 四川大学 | Steel wire Young's modules instrument levelling device |
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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: 20091028 Termination date: 20101204 |