CN202306898U - Diameter measuring instrument for sphere - Google Patents
Diameter measuring instrument for sphere Download PDFInfo
- Publication number
- CN202306898U CN202306898U CN2011204681704U CN201120468170U CN202306898U CN 202306898 U CN202306898 U CN 202306898U CN 2011204681704 U CN2011204681704 U CN 2011204681704U CN 201120468170 U CN201120468170 U CN 201120468170U CN 202306898 U CN202306898 U CN 202306898U
- Authority
- CN
- China
- Prior art keywords
- scale
- measuring
- sphere
- framework
- measuring instrument
- 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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Abstract
The utility model relates to a measuring device or an education and teaching tool, in particular to a diameter measuring instrument for a sphere. The diameter measuring instrument comprises a scale, a framework, an upper measuring head and lower measuring heads, wherein the scale is connected with the middle of the framework in a sliding manner; two symmetric measuring feet are arranged on the framework; the lower measuring heads are connected with the lower ends of the measuring feet; the upper measuring head is connected with the lower end of the scale; during measurement, the upper measuring head and the two lower measuring heads are in contact with a to-be-detected spherical surface at the same time; and the diameter value of the sphere can be read out from the scale when the diameter measuring instrument passes through the great circle of the sphere.
Description
Technical field
The utility model relates to surveying instrument or education and instruction apparatus; Particularly simple structure, can measure a kind of sphere diameter measuring instrument of sphere diameter fast; Also can make the student when study spheroid knowledge, can intuitively understand through the big diameter of a circle of ball and the geometric relationship of sphere diameter quantitatively.
Background technology
The student is when the study geometric knowledge; Particularly during the studying space solid figure; If can there be teaching aid demonstration intuitively to have good effect, said a kind of sphere diameter measuring instrument can make student's understanding quantitatively directly perceived through the big diameter of a circle of ball and the geometric relationship of sphere diameter.
Summary of the invention
In order to enrich the education and instruction apparatus; Some apparent problem when solving study spheroid knowledge; The utility model provides a kind of sphere diameter measuring instrument, can measure sphere diameter fast, can make student's understanding quantitatively directly perceived through the big diameter of a circle of ball and the geometric relationship of sphere diameter.
The scheme that the utility model adopted is:
A kind of sphere diameter measuring instrument mainly is made up of scale, framework, last gauge head and following gauge head; Said scale is slidingly connected to said frame mid portion; Said framework has the survey pin of two symmetries, and said gauge head down is connected in said survey underfooting end, and the said gauge head of going up is connected in said scale lower end.Design is 2a (a is a constant) with the constant distance of two following gauge heads; When the said difference in height that goes up gauge head and following gauge head is x; Cross the said axis of great circle of going up gauge head and 3 of following gauge heads and for
scale on the said scale is designed according to this formula
, measuring numerical value can directly show on said scale.During measurement, said last gauge head and two following gauge head while contact measured spheres because said scale can slide up and down in said framework, slide according to the size of ball, when passing through the great circle of ball, can read measurement numerical value on the said scale, i.e. the diameter of spheroid.
The beneficial effect of the utility model is:
A kind of sphere diameter measuring instrument simple structure is practical, can measure sphere diameter fast, and can help student's understanding quantitatively directly perceived through the big diameter of a circle of ball and the geometric relationship of sphere diameter.
Description of drawings
Figure below in conjunction with the utility model further specifies:
Fig. 1 is said a kind of sphere diameter measuring instrument synoptic diagram.
Among the figure, 1. scale, 2. framework is 3. gone up gauge head, 4. descends gauge head.
Embodiment
Like Fig. 1 is said a kind of sphere diameter measuring instrument synoptic diagram; Mainly form by scale, framework, last gauge head and following gauge head; Said scale (1) is slidingly connected to said framework (2) middle part; Said framework (2) has the survey pin of two symmetries, and said gauge head (4) down is connected in said survey underfooting end, and the said gauge head (3) of going up is connected in said scale (1) lower end.
During use, said gauge head and two the following gauge heads contact measured spheres simultaneously of going up, and said scale demonstrates the diameters of spheroid during through the great circle of ball, the greatest measure that said in other words scale can be read is exactly the diameter of spheroid.
When said constant a gets different values, can obtain the measuring instrument of different size.
Claims (1)
1. sphere diameter measuring instrument; Mainly form by scale, framework, last gauge head and following gauge head; It is characterized in that: said scale (1) is slidingly connected to said framework (2) middle part; Said framework (2) has the survey pin of two symmetries, and said gauge head (4) down is connected in said survey underfooting end, and the said gauge head (3) of going up is connected in said scale (1) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204681704U CN202306898U (en) | 2011-11-09 | 2011-11-09 | Diameter measuring instrument for sphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204681704U CN202306898U (en) | 2011-11-09 | 2011-11-09 | Diameter measuring instrument for sphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306898U true CN202306898U (en) | 2012-07-04 |
Family
ID=46375746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204681704U Expired - Fee Related CN202306898U (en) | 2011-11-09 | 2011-11-09 | Diameter measuring instrument for sphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202306898U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534954A (en) * | 2014-12-30 | 2015-04-22 | 东莞市常晋凹版模具有限公司 | Support of circular shaft diameter measurement device |
| CN105318807A (en) * | 2014-06-05 | 2016-02-10 | 江苏华阳金属管件有限公司 | Circular steel pipe diameter measuring tool |
| KR102558775B1 (en) * | 2023-04-05 | 2023-07-25 | 경상남도 (교육청) | Sphere in a box rescue game device for calculating the diameter of a sphere in a box |
-
2011
- 2011-11-09 CN CN2011204681704U patent/CN202306898U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318807A (en) * | 2014-06-05 | 2016-02-10 | 江苏华阳金属管件有限公司 | Circular steel pipe diameter measuring tool |
| CN104534954A (en) * | 2014-12-30 | 2015-04-22 | 东莞市常晋凹版模具有限公司 | Support of circular shaft diameter measurement device |
| CN104534954B (en) * | 2014-12-30 | 2017-07-21 | 东莞市脉拓表面处理科技有限公司 | A kind of support of circular shaft diameter measuring device |
| KR102558775B1 (en) * | 2023-04-05 | 2023-07-25 | 경상남도 (교육청) | Sphere in a box rescue game device for calculating the diameter of a sphere in a box |
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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: 20120704 Termination date: 20121109 |