CN2921789Y - Precision engineering measurement reforced centering device - Google Patents
Precision engineering measurement reforced centering device Download PDFInfo
- Publication number
- CN2921789Y CN2921789Y CN 200620026561 CN200620026561U CN2921789Y CN 2921789 Y CN2921789 Y CN 2921789Y CN 200620026561 CN200620026561 CN 200620026561 CN 200620026561 U CN200620026561 U CN 200620026561U CN 2921789 Y CN2921789 Y CN 2921789Y
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- Prior art keywords
- bolt
- screw
- centering device
- bearing sheet
- ring groove
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- Expired - Lifetime
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a precision engineering measurement forced centering device which comprises a bolt and a bearing platform platen, wherein, the bolt is inserted into the screw hole in the middle of the bearing platform platen; the bolt is provided with screw-threads at both ends, grooves at both top ends and a baffle ring at the middle part; the center of the bearing platform platen is provided with a ring groove with an upward opening; the inside diameter and the depth of the ring groove are respectively equal to the diameter and height of the baffle ring at the middle of the bolt; the middle part of the ring groove bottom has a screw hole penetrating through the bearing platform platen; the depth of the screw hole is equal to the thin screw stem length at the lower end of the bolt, and the internal screw thread of the screw hole matches with the screw thread of the thin screw stem; the screw thread of the thick screw stem at the upper end of the bolt matches with the base screw hole of a measuring instrument connected with the bolt. The utility model has the advantages of flexible assembly, uneasy damage and convenient use, thereby being good for increasing efficiency of precision engineering measurement.
Description
Technical field
The utility model relates to engineering survey, particularly relates to the instrument stringer of precise engineering survey.
Background technology
Engineering survey is the important component part of engineering construction, comprises the control survey and the topographical surveying in planning and design stage, and the construction survey of construction stage, equipment install and measure and acceptance survey, the deformation measurement in operation control stage etc.For heavy construction and special engineered,, need carry out precise engineering survey, with construction, location that adapts to engineering or the high standard requirement that deformation observation was proposed as railway, tunnel, mine, bridge and defence engineering etc.
For the high precision that guarantees observation data and the reliability of achievement, precise engineering survey does not generally use traditional interim tripod to set up instrument, but set up observation pier 1 (Fig. 1) or permanent steel tripod (Fig. 2), the error of centralization that repeats to set up instrument with elimination.
No matter be observation pier or permanent steel tripod, all need to use the forced centering device, so that the surveying instrument that is set up accurately and repeatedly is fixed on observation pier or the permanent steel tripod.
Fig. 3 is a kind of forced centering device of observing pier or permanent steel tripod use in the prior art, is made of pedestal bearing sheet 2,4 and fixing bolt 5 thereof.One end of bolt 5 has screw thread, and the other end is fixedly welded on the bearing sheet 2.The screw thread and the screw on the surveying instrument pedestal of bolt 5 one ends are supporting, and pedestal is lain on the bearing sheet 2.Forced centering device shown in Figure 3, destroyed easily under the unserviced in the open air situation, in case exposed screw thread is ruined, observation pier that involves great expense or permanent steel tripod are also just useless, and the observation data and the achievement that most importantly work laboriously to receive also just have to be scrapped.For protection is provided with open-air forced centering device, on exposed set bolt, to set up the over cap that locks, but have little effect, the tapered end of wind and weather can get rusty very soon, brings more troubles to the user.
Fig. 4 is the set bolt that is applicable to the forced centering device of steel tripod in the prior art.There is screw thread at the bolt two ends, and there is one section cylinder 6 centre, the consistency of thickness of the length of cylinder 6 and the bearing sheet above the tripod 4.When set bolt combined with bearing sheet, the cylinder 6 in the middle of the bolt placed in the circular hole at bearing sheet 4 centers, and the diameter of cylinder 6 is consistent with the diameter of circular hole.Bolt top connects the surveying instrument pedestal, and the bolt bottom is stretched out below bearing sheet and fixed by hexagonal nut.Set bolt shown in Figure 4 is movable, screw thread can exempt from destruction, but when combining, can only adopt the manual mode that screws nut from below with bearing sheet, and sometimes nut revolve too tight, be not easy to screw off, must therefore inconvenience be arranged more by special spanner, engineering survey efficient is reduced work on the spot.
Summary of the invention
Existing fragile and use problem such as inconvenience at the forced centering device of above-mentioned prior art, the utility model is released a kind of forced centering device of new structure, the employing two ends establish groove by screw thread, top and the middle bolt that baffle ring is set cooperates the structure of forming with the middle bearing sheet of establishing ring groove and threaded hole, make the forced centering device have advantages such as flexible for installation, not fragile, easy to use, help improving the efficient of precise engineering survey.
The forced centering device that the utility model is related is made of bolt and bearing sheet, and the screw rod of bolt lower end inserts in the threaded hole at bearing sheet middle part.
Screw rod one end at bolt two ends is thick, and an end is thin.In the middle of the bolt, establish baffle ring between promptly thick screw rod and the micro screw.The diameter of baffle ring is identical with the diameter of the thick screw rod in bolt upper end.The thick screw flight in bolt upper end mates with the screw of the surveying instrument pedestal that is connected.Bolt two tops are respectively equipped with groove.
Bearing sheet can be square or circular, and certain thickness is arranged.Bearing sheet central authorities are provided with the ring groove of upward opening, and ring groove has the threaded hole that penetrates bearing sheet in the middle of the bottom.The internal diameter of bearing sheet central annular groove is identical with the baffle ring diameter of bolt centre, and the degree of depth of ring groove is identical with the baffle ring height.The degree of depth in ring groove bottom thread hole is identical with the length of bolt lower end micro screw, the internal thread coupling of the screw thread of micro screw and ring groove threaded hole.
The related forced centering device of the utility model is arranged on observation pier or the permanent steel tripod and is applied to precise engineering survey.If be used on the nonvolatil steel tripod, bearing sheet is done circular, as long as directly burn-on three angle steel below bearing sheet, adds stull and gets final product.If be used on the cement observation pier, bearing sheet adopts square, a bit of screw-thread steel of bearing sheet four jiaos of belows vertical welding, and the bearing sheet surface maintains an equal level with cement observation pier end face or slightly exceeds a little.In work progress, cement enters the threaded hole in the middle of the bearing sheet, at little metal coating cap of the lower end of bearing sheet threaded hole welding.
When the forced centering device is used, in the threaded hole at bolt lower end micro screw precession bearing sheet middle part, baffle ring in the middle of the bolt just in time is stuck in the ring groove of bearing sheet, connects the pedestal of surveying instrument on the thick screw rod in bolt upper end, and the pedestal of instrument is lain on the bearing sheet.After measuring end, the bolt of forced centering device can take off from bearing sheet, avoids the screw thread of bolt to be damaged.If it is too tight that bolt is twisted on bearing sheet, can utilize the groove on the simple tool inserting bolt top of at hand coin, key and so on that bolt is unscrewed, prevent that bolt is stuck on bearing sheet.After bolt taken off from bearing sheet, plain screw can be screwed in the bearing sheet threaded hole, the threaded hole of open-air bearing sheet is set with protection.
Description of drawings
Fig. 1, the observation pier structure figure of forced centering device is set.
Fig. 2, the permanent steel tripod structure figure of forced centering device is set.
A kind of forced centering structure drawing of device of Fig. 3, prior art.
The another kind of forced centering device bolt arrangement figure of Fig. 4, prior art.
Fig. 5, forced centering device bolt arrangement figure of the present utility model.
Fig. 6 a, forced centering device bearing sheet structural drawing of the present utility model.
Fig. 6 b, forced centering device bearing sheet lateral sectional view of the present utility model.
Fig. 7, forced centering device bolt of the present utility model combine wiring layout with bearing sheet.
Description of symbols among the figure:
1, observation pier 2, square bearing sheet
3, permanent steel tripod 4, circular bearing sheet
5, bolt 6, cylinder
7, thick screw rod 8, baffle ring
9, micro screw 10, groove
11, bearing sheet 12, ring groove
13, threaded hole
Embodiment
Now further specify embodiment of the present utility model in conjunction with the accompanying drawings.Fig. 5 and Fig. 6 show forced centering device bolt of the present utility model and bearing sheet structure respectively.Fig. 7 shows that forced centering device bolt combines wiring layout with bearing sheet.
As shown in the figure, the related forced centering device of the utility model is made of bolt and bearing sheet 11, and bolt inserts in the threaded hole 13 at bearing sheet 11 middle parts.The bolt two ends are respectively thick screw rod 7 and micro screw 9, establish baffle ring 8 between thick screw rod 7 and the micro screw 9.The diameter of baffle ring 8 is identical with the diameter of thick screw rod 7.Bolt two tops are respectively equipped with groove 10.
Claims (6)
1, a kind of precise engineering survey forced centering device is made of bolt and bearing sheet, it is characterized in that, the screw rod of bolt lower end inserts in the threaded hole at bearing sheet middle part.
2, precise engineering survey forced centering device according to claim 1 is characterized in that, screw rod one end at bolt two ends is thick, and an end is thin; In the middle of the bolt, establish baffle ring between promptly thick screw rod and the micro screw; Bolt two tops are respectively equipped with groove.
3, precise engineering survey forced centering device according to claim 2 is characterized in that, the diameter of baffle ring is identical with the diameter of the thick screw rod in bolt upper end.
4, precise engineering survey forced centering device according to claim 2 is characterized in that, the thick screw flight in bolt upper end mates with the screw of the surveying instrument pedestal that is connected.
5, precise engineering survey forced centering device according to claim 1 is characterized in that bearing sheet central authorities are provided with the ring groove of upward opening, and ring groove has the threaded hole that penetrates bearing sheet in the middle of the bottom.
6, precise engineering survey forced centering device according to claim 5, it is characterized in that, the internal diameter of bearing sheet ring groove is identical with the baffle ring diameter of bolt centre, the degree of depth of ring groove is identical with the baffle ring height, the degree of depth in ring groove bottom thread hole is identical with the length of bolt lower end micro screw, the internal thread coupling of the screw thread of micro screw and ring groove threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026561 CN2921789Y (en) | 2006-06-29 | 2006-06-29 | Precision engineering measurement reforced centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026561 CN2921789Y (en) | 2006-06-29 | 2006-06-29 | Precision engineering measurement reforced centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921789Y true CN2921789Y (en) | 2007-07-11 |
Family
ID=38254269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620026561 Expired - Lifetime CN2921789Y (en) | 2006-06-29 | 2006-06-29 | Precision engineering measurement reforced centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921789Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017807A (en) * | 2011-09-22 | 2013-04-03 | 松下电工神视电子（苏州）有限公司 | Fixing device of cylindrical sensor |
| CN103076010A (en) * | 2013-01-25 | 2013-05-01 | 天津二十冶建设有限公司 | Fabrication method of forced centering observation pillar for precision engineering measurement and observation pillar |
| CN105241485A (en) * | 2014-07-07 | 2016-01-13 | 李幼月 | Forced centering plate for measurement |
-
2006
- 2006-06-29 CN CN 200620026561 patent/CN2921789Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017807A (en) * | 2011-09-22 | 2013-04-03 | 松下电工神视电子（苏州）有限公司 | Fixing device of cylindrical sensor |
| CN103017807B (en) * | 2011-09-22 | 2016-06-15 | 松下电工神视电子（苏州）有限公司 | The stationary installation of a kind of round shape sensor |
| CN103076010A (en) * | 2013-01-25 | 2013-05-01 | 天津二十冶建设有限公司 | Fabrication method of forced centering observation pillar for precision engineering measurement and observation pillar |
| CN105241485A (en) * | 2014-07-07 | 2016-01-13 | 李幼月 | Forced centering plate for measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070711 |
|
| EXPY | Termination of patent right or utility model |