CN103487017A - Sextant dial - Google Patents
Sextant dial Download PDFInfo
- Publication number
- CN103487017A CN103487017A CN201210194083.3A CN201210194083A CN103487017A CN 103487017 A CN103487017 A CN 103487017A CN 201210194083 A CN201210194083 A CN 201210194083A CN 103487017 A CN103487017 A CN 103487017A
- Authority
- CN
- China
- Prior art keywords
- sextant
- dial
- micro
- motion disk
- scale
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
- G01C1/08—Sextants
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a marine surveying and mapping instrument device, and specially relates to a sextant dial provided with a dial body. A position where the outer edge of the dial body and a micro-motion disk are matched is provided with a strip-type sliding groove. The sextant dial is provided with the sliding groove matched with the micro-motion disk, so that the micro-motion disk can slide back and forth in the sliding groove and scale numerical values on the dial cannot be abraded, and thus error is avoided. At the same time, an arranged guide rail groove can be better matched with a worm wheel of the micro-motion disk, thus friction is reduced, measurement accuracy is improved, and service life of a sextant is prolonged.
Description
Technical field
The present invention relates to a kind of navigation surveying instrument device, particularly a kind of sextant scale.
Background technology
In navigational field, sextant is commonly used to measure the optical instrument of angle between the target of two, a distant place.Usually measure a certain moment sun or other celestial bodies and sea horizon or horizontal angle with it, in order to learn rapidly the longitude and latitude of seagoing vessel or aircraft location.Measuring and need to further measure on scale by the fine motion dish at existing sextant, due to fine motion dish and the long-term break-in of scale needs, causing the scale wearing and tearing comparatively serious, the precision measure deviation is larger, has affected the effect of measuring.
Summary of the invention
The objective of the invention is to solve the problem of above-mentioned existence, a kind of sextant scale that reduces friction, improves measuring accuracy is provided.
The objective of the invention is to realize as follows: a kind of sextant scale, there is disk body, the described disk body outer rim position of matching with the fine motion dish is provided with the bar shaped sliding tray.
Further, be positioned at described disk body outer rim and sliding tray adjacent regions distribution guide-track groove.
Advantage of the present invention: design proposal of the present invention has the sliding tray matched with the fine motion dish, and the fine motion dish that can make slidably reciprocates in sliding tray, and the scale numerical value on the scale that can not wear and tear causes error.The guide-track groove simultaneously be provided with can better coordinate with the worm gear of fine motion dish, reduces friction, improves measuring accuracy, has extended the serviceable life of sextant.
The accompanying drawing explanation
For content of the present invention more easily is expressly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the partial schematic diagram of described guide-track groove;
Reference numeral: 1, disk body, 2, sliding tray, 3, guide-track groove.
Embodiment:
See shown in Fig. 1, Fig. 2 and Fig. 3, a kind of sextant scale, have disk body 1, and the described disk body 1 outer rim position of matching with the fine motion dish is provided with bar shaped sliding tray 2; Be positioned at described disk body 1 outer rim and sliding tray 2 adjacent regions distribution guide-track grooves 3.Its principle of work is: by sliding tray 2, can make the fine motion dish slide on scale easily, and the guide-track groove 3 of the worm gear on design and fine motion dish, better protected the sextant scale.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a sextant scale, have disk body (1); It is characterized in that: described disk body (1) the outer rim position of matching with the fine motion dish is provided with bar shaped sliding tray (2).
2. sextant scale according to claim 1, is characterized in that: be positioned at described disk body (1) outer rim and sliding tray (2) adjacent regions distribution guide-track groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194083.3A CN103487017A (en) | 2012-06-13 | 2012-06-13 | Sextant dial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194083.3A CN103487017A (en) | 2012-06-13 | 2012-06-13 | Sextant dial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103487017A true CN103487017A (en) | 2014-01-01 |
Family
ID=49827433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210194083.3A Pending CN103487017A (en) | 2012-06-13 | 2012-06-13 | Sextant dial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103487017A (en) |
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2012
- 2012-06-13 CN CN201210194083.3A patent/CN103487017A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |