CN87207560U - Lift level instrument - Google Patents
Lift level instrument Download PDFInfo
- Publication number
- CN87207560U CN87207560U CN 87207560 CN87207560U CN87207560U CN 87207560 U CN87207560 U CN 87207560U CN 87207560 CN87207560 CN 87207560 CN 87207560 U CN87207560 U CN 87207560U CN 87207560 U CN87207560 U CN 87207560U
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- China
- Prior art keywords
- instrument
- utility
- model
- lift
- scale
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- 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.)
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a lift level instrument which is characterized in that the lifting and the fall of a vertical shaft can be directly pushed by only adopting a spiral hand wheel, and the level of the self of the instrument is not influenced. Thus, the utility model can not be influenced by a K value when the reading and the station checking work are carried out. A scale is not needed to be changed, the measuring speed and the measuring accuracy are raised, the labor strength of the observer is reduced, and the dividing technology of the scale is simplified.
Description
The utility model relates to a kind of spirit-leveling instrument, particularly the lift spirit-leveling instrument.
Existing spirit-leveling instrument, in order to guarantee measuring accuracy, all need to carry out reading and survey station than nuclear work, by national leveling norm requirement, this work generally is the base by levelling pole, auxilliary chi reading is (red, black reading) and the permissible value that is calculated compare, because the base of same scale, auxilliary chi differs constant k=4.687 or k=4.787 rice (three, fourth-order leveling), like this may be clearly to observer's psychological application, and owing to when each survey station is measured, all want transform-based, auxilliary chi, this has just influenced measuring speed, precision, labour intensity are also bigger.Another kind method is the method that instrument is raise, and promptly wants frame secondary tripod on same survey station, all need adjust bubble at every turn, the leveling instrument, because bother so very much, and measuring speed is very slow, generally all seldom in this way.
Task of the present utility model is under the condition that guarantees measuring accuracy, former apparatus structure is only done the change of individual part, instrument is raise or reduce, do not need to flatten again instrument, make it when measuring, only to adopt the single face rod reading, thereby just can finish reading and survey station check work.
The method of finishing the work is: the base bottom at spirit-leveling instrument adds a spiral handwheel, and when rotating this handwheel, the push rod on the handwheel just promotes the vertical pivot of instrument, thereby the alidade of instrument can be risen or descend.
After this spiral handwheel delineated, this instrument can also be done little vertical survey and use.
Adopt the utility model, when carrying out reading and survey station check work, be not subjected to the influence of k value, do not need the conversion scale, and the ascending, descending of instrument does not influence the level of instrument itself, so just improve measuring speed, precision, alleviated observer's labour intensity, simplified the delineation technology of scale, meet set quota in the national leveling norm, the utility model is applicable to all spirit-leveling instruments that adopt the standard cylindrical vertical pivot.
In conjunction with the accompanying drawings, this utility model is further described:
Rotate spiral handwheel (4), then the push rod (5) on this handwheel (4) just promotes the vertical pivot rising or descends, because the manufacturing accuracy of spirit-leveling instrument has guaranteed that the gap between vertical pivot (1) and the vertical pivot cover (2) is very little, therefore, when vertical pivot (1) rises or descends, the heavy curtain of its axis is moving just very little, can not destroy the leveling of instrument collimation axis, is carrying out just needn't flattening instrument more again when reading and survey station are checked like this.
Claims (2)
1, lift spirit-leveling instrument is characterized in that adopting a device that makes vertical pivot directly rise or to descend, and this device is made up of a spiral handwheel (4) and push rod (5).
2, lift spirit-leveling instrument according to claim 1 is characterized in that can carrying out on the spiral handwheel (4) the graduation reading and can make micrometer usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207560 CN87207560U (en) | 1987-04-30 | 1987-04-30 | Lift level instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207560 CN87207560U (en) | 1987-04-30 | 1987-04-30 | Lift level instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207560U true CN87207560U (en) | 1988-05-18 |
Family
ID=4822985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207560 Pending CN87207560U (en) | 1987-04-30 | 1987-04-30 | Lift level instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427886C (en) * | 2004-05-12 | 2008-10-22 | 沈建明 | Leveling disc |
-
1987
- 1987-04-30 CN CN 87207560 patent/CN87207560U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427886C (en) * | 2004-05-12 | 2008-10-22 | 沈建明 | Leveling disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |