CN201945306U - Roadway gradient goniometer for coal mine - Google Patents
Roadway gradient goniometer for coal mine Download PDFInfo
- Publication number
- CN201945306U CN201945306U CN2010206313100U CN201020631310U CN201945306U CN 201945306 U CN201945306 U CN 201945306U CN 2010206313100 U CN2010206313100 U CN 2010206313100U CN 201020631310 U CN201020631310 U CN 201020631310U CN 201945306 U CN201945306 U CN 201945306U
- Authority
- CN
- China
- Prior art keywords
- goniometer
- gradient
- protractor
- scale
- handle
- 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
A roadway gradient goniometer for a coal mine is applied to gradient measurements of underground roadways of mines. The gradient goniometer for the mine is formed by two different sized goniometers and a connecting shaft, wherein degrees of the small goniometer decrease progressively from 90-degree scale in the middle to both sides, and the large goniometer is provided with a glass grating on the inner side of scales between 80-degree scale to 100-degree scale. In gradient measurements of underground roadways, the large goniometer is fixed on the waist lines of the roadways through a handle and the small goniometer rotates to level position round a connection shaft under self weight. The measured roadway gradient is one scale of the small goniometer in the grating and is pointed by the 90-degree scale of the large goniometer.
Description
Technical field
The utility model relates to a kind of mining tunnel gradient angular instrument, is about mine underworkings slope measuring.Its volume is little, and is easy to carry, use simply, and strong operability, cheap, safe and reliable, can measure the tunnel gradient accurately.
Background technology
At present, known colliery mainly is made up of protractor and balancing point with tunnel gradient angular instrument.Utilize deadweight to make balancing point sagging automatically during measurement, point to the number of degrees of protractor, and be the tunnel gradient by the angle that calculates.
Summary of the invention
The purpose of this utility model provides a kind of easy and simple to handle, and is safe and reliable, can accurately measure the tunnel gradient, the colliery tunnel gradient angular instrument that accuracy is high.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of tunnel gradient angular instrument, form by two protractors that vary in size, handle, coupling spindle and printing opacity grid, it is characterized in that: handle, printing opacity grid are an integral body with big protractor, and big protractor connects by coupling spindle with little protractor.Parallel with stringcourse by big protractor, little protractor is parallel with horizontal line, and the angle of two protractors is exactly that the tunnel gradient principle of surveying is operated.
The beneficial effects of the utility model are, owing to adopted such scheme, when carrying out the tunnel slope measuring, big protractor is fixed on the stringcourse place that needs to measure the tunnel by handle, and little protractor is owing to rotate to horizontal level from recoiling coupling spindle.Because the number of degrees of little protractor are successively decreased to both sides by 90 ° of centre, big protractor has glass printing opacity grid 80 ° to 100 ° scale mark inboards.Therefore, the scale of the little protractor in the printing opacity grid of 90 ° of scale mark indications of big protractor is exactly the tunnel gradient that will measure.In the structure, in two protractors, connection holes is arranged, and on the big protractor printing opacity grid and a handle are arranged respectively.
Description of drawings
Figure below further specifies the utility model in conjunction with the accompanying drawings and embodiments.
Figure is the front elevation of the colliery of the utility model embodiment with tunnel gradient angular instrument.
1. big protractors among the figure, 2. little protractor, 3. coupling spindle, 4. handle, 5. printing opacity grid
Embodiment
Among the embodiment shown in the figure, big protractor 1 is fixed on the gradeline place by handle 4, and hornwork 2 is owing to rotate to horizontal level from recoiling coupling spindle 3 in a small amount.Thereby the scale in the printing opacity grid 5 of 90 ° of scale mark indications of big protractor 1 is exactly the tunnel gradient of surveying.
Claims (1)
1. a tunnel gradient angular instrument is made up of two protractors that vary in size, handle, coupling spindle and printing opacity grid, it is characterized in that: handle, printing opacity grid are an integral body with big protractor, and big protractor connects by coupling spindle with little protractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206313100U CN201945306U (en) | 2010-11-22 | 2010-11-22 | Roadway gradient goniometer for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206313100U CN201945306U (en) | 2010-11-22 | 2010-11-22 | Roadway gradient goniometer for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945306U true CN201945306U (en) | 2011-08-24 |
Family
ID=44472645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206313100U Expired - Fee Related CN201945306U (en) | 2010-11-22 | 2010-11-22 | Roadway gradient goniometer for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679629B (en) * | 2017-01-13 | 2021-03-23 | 西南交通大学 | Ruler type level meter based on grating diffraction and method for measuring inclined plane inclination angle |
-
2010
- 2010-11-22 CN CN2010206313100U patent/CN201945306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679629B (en) * | 2017-01-13 | 2021-03-23 | 西南交通大学 | Ruler type level meter based on grating diffraction and method for measuring inclined plane inclination angle |
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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: 20110824 Termination date: 20111122 |