CN202002600U - Inspection protractor - Google Patents
Inspection protractor Download PDFInfo
- Publication number
- CN202002600U CN202002600U CN2011200447873U CN201120044787U CN202002600U CN 202002600 U CN202002600 U CN 202002600U CN 2011200447873 U CN2011200447873 U CN 2011200447873U CN 201120044787 U CN201120044787 U CN 201120044787U CN 202002600 U CN202002600 U CN 202002600U
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- CN
- China
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- scale
- vernier
- main
- main scale
- die trial
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- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to an inspection protractor. A vernier is hinged with a main scale, the vernier and the main scale are in a fan-shaped sheet type, and circle centers of circular arcs of the vernier and the main scale are coincident. A plurality of scale lines are arranged on the vernier and the main scale and are endocentric scale lines, and extension lines of the scale lines are intersected at the circle centers of the circular arcs of the vernier and the main scale. The inspection protractor has the advantages that the test precision is as high as 0.05 degree, the structure is simple, small and ingenious, the operation is convenient and fast, firmness and durability are realized, the stability is high, and the cost is low.
Description
Technical field
The utility model relates to a kind of die trial protractor, is applicable to that test such as concrete, mortar, strength of cement mortar is with the verification of various die trial angle.
Background technology
In the verification of existing various die trial angle, need the angle between test each limit of die trial and base plate and each limit, normally used instrument is a universal protractor, and operation is comparatively complicated, and general personnel can not operate, even professional's verification angle is also consuming time longer.The die trial protractor has overcome these deficiencies, can measure the die trial angle accurately and rapidly.
Summary of the invention
The utility model provides a kind of die trial protractor, fast, accurately measures the device of tests such as concrete, mortar, strength of cement mortar with various die trial angles, and measured value is accurate, and simple operation is simple in structure, and is sturdy and durable.
The purpose of this utility model is achieved in that a kind of die trial protractor, and vernier scale and main scale are hinged, and described vernier scale, main scale are fan-shaped sheet, and the circular arc center of circle of vernier scale, main scale overlaps.Be provided with many scale marks on described vernier scale, the main scale, be entad scale mark, the extended line of described scale mark intersects at the circular arc center of circle of vernier scale, main scale.
Vernier scale is connected by bolt with main scale.
The arc angle of vernier scale, main scale equates.
Vernier scale is provided with 21 and transfers scale mark, and 19 central angles of spending evenly are divided into 20 equal portions.
On the main scale between the adjacent scale mark angle be 1 the degree.
The inner of the outer end of vernier scale scale mark and main scale 1 scale mark is on the same circle.
A kind of die trial protractor of the utility model, the measuring accuracy height is 0.05 degree.Simple in structure, small and exquisite, simple operation, sturdy and durable, good stability, cost is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the utility model apparatus structure synoptic diagram.
Embodiment
A kind of die trial protractor, vernier scale 2 is hinged with main scale 1, described vernier scale 2, main scale 1 are fan-shaped sheet, the circular arc center of circle of vernier scale 2, main scale 1 overlaps, be provided with many scale marks on described vernier scale 2, the main scale 1, be entad scale mark, the extended line of described scale mark intersects at the circular arc center of circle of vernier scale 2, main scale 1.Vernier scale 2 is connected by bolt 3 with main scale 1.The arc angle of vernier scale 2, main scale 1 equates.Vernier scale 2 is provided with 21 and transfers scale mark, and 19 central angles of spending evenly are divided into 20 equal portions.On the main scale 1 between the adjacent scale mark angle be 1 the degree.The inner of the outer end of vernier scale 2 scale marks and main scale 1 scale mark is on the same circle.
The center of circle of the radiused edges of vernier scale 2 and main scale 1 coincides with same point, and vernier scale 2 and is close together before main scale 1, connects by set bolt 3.Set bolt 3 is fastening bolts, and its degree of tightness is adjustable.When set bolt 3 was transferred pine, vernier scale 2 and main scale 1 can be around set bolt 3 rotations, and when set bolt 3 tightened, the relative position of vernier scale 1 and main scale 2 was fixed.
Initial the taking measurement of an angle of the utility model device is 60 degree, and during check and correction, the sideline B ' of vernier scale 2 overlaps with the sideline A of main scale 1, and " 0 " scale of vernier scale 2 overlaps with 60 degree scales of main scale 1; The sideline B of vernier scale 2 overlaps with the sideline A ' of main scale 1 simultaneously.
During use, adjust the degree of tightness of fastening bolt 3, vernier scale 2 and main scale 1 are rotated flexibly.Then, the sideline of the close down scale value of the sideline of close high range value of vernier scale 2 and main scale 1 is overlapped respectively with two limits of measured angle in the die trial of test.Tighten set bolt 3, fixedly the relative position of vernier scale 2 and main scale 1.Read scale value on the main scale 1 of " 0 " scale mark indication of vernier scale 2 as the round values of tested angle, read the sign value at the scale mark place that overlaps with the scale mark of main scale 1 on the vernier scale 2 again, this is worth divided by 100 fraction parts as the tested angle value, measurement unit: degree.As shown in Figure 1.Main scale 1 high scale is 101, and the scale on the vernier scale 2 is 30, and final measured value is a 101+30 ÷ 100=101.30 degree.
Claims (6)
1. die trial protractor, it is characterized in that: vernier scale (2) is hinged with main scale (1), described vernier scale (2), main scale (1) are fan-shaped sheet, the circular arc center of circle of vernier scale (2), main scale (1) overlaps, be provided with many scale marks on described vernier scale (2), the main scale (1), be entad scale mark, the extended line of described scale mark intersects at the circular arc center of circle of vernier scale (2), main scale (1).
2. according to the described a kind of die trial protractor of claim 1, it is characterized in that: vernier scale (2) is connected by bolt (3) with main scale (1).
3. according to claim 1 or 2 described a kind of die trial protractors, it is characterized in that: the arc angle of vernier scale (2), main scale (1) equates.
4. according to claim 1 or 2 or 3 described a kind of die trial protractors, it is characterized in that: vernier scale (2) is provided with 21 scale marks, and 19 central angles of spending evenly are divided into 20 equal portions.
5. according to claim 1 or 2 or 3 described a kind of die trial protractors, it is characterized in that: angle is 1 degree between the last adjacent scale mark of main scale (1).
6. according to claim 1 or 2 described a kind of die trial protractors, it is characterized in that: the inner of the outer end of vernier scale (2) scale mark and main scale (1) scale mark is on the same circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200447873U CN202002600U (en) | 2011-02-23 | 2011-02-23 | Inspection protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200447873U CN202002600U (en) | 2011-02-23 | 2011-02-23 | Inspection protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002600U true CN202002600U (en) | 2011-10-05 |
Family
ID=44705337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200447873U Expired - Fee Related CN202002600U (en) | 2011-02-23 | 2011-02-23 | Inspection protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002600U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292656A (en) * | 2013-07-03 | 2013-09-11 | 颜廷财 | Slope dimension measuring instrument |
| CN105806171A (en) * | 2016-04-11 | 2016-07-27 | 黄友谊 | Measuring structure achieved by means of double concentric circles, method and application of the method |
| CN106353007A (en) * | 2016-08-29 | 2017-01-25 | 长安大学 | Precise testing device for temperature gradients of concrete structure and testing method of precise testing device |
| CN106813563A (en) * | 2017-04-12 | 2017-06-09 | 张岩 | Angle measurement unit |
-
2011
- 2011-02-23 CN CN2011200447873U patent/CN202002600U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292656A (en) * | 2013-07-03 | 2013-09-11 | 颜廷财 | Slope dimension measuring instrument |
| CN105806171A (en) * | 2016-04-11 | 2016-07-27 | 黄友谊 | Measuring structure achieved by means of double concentric circles, method and application of the method |
| CN106353007A (en) * | 2016-08-29 | 2017-01-25 | 长安大学 | Precise testing device for temperature gradients of concrete structure and testing method of precise testing device |
| CN106813563A (en) * | 2017-04-12 | 2017-06-09 | 张岩 | Angle measurement unit |
| CN106813563B (en) * | 2017-04-12 | 2020-02-21 | 张岩 | Angle measuring 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: 20111005 Termination date: 20140223 |