CN202938817U - Suspended measuring tape plumb bob - Google Patents
Suspended measuring tape plumb bob Download PDFInfo
- Publication number
- CN202938817U CN202938817U CN 201220618354 CN201220618354U CN202938817U CN 202938817 U CN202938817 U CN 202938817U CN 201220618354 CN201220618354 CN 201220618354 CN 201220618354 U CN201220618354 U CN 201220618354U CN 202938817 U CN202938817 U CN 202938817U
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- CN
- China
- Prior art keywords
- plumb bob
- surveyor
- scale
- rod
- utility
- 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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a suspended measuring tape plumb bob and belongs to the technical field of measurement. The shortcoming in the prior art that errors are easily caused when a measuring instrument is high and the standing elevation is high is solved; and the suspended measuring tape plumb bob mainly comprises a plumb bob main body, wherein a surveyor's rod with scales is arranged above the plumb bob main body; the surveyor's rod is a tape; the plumb bob main body is arranged below the surveyor's rod through an anti-deformation releasable rope; a hanging rope with a hanging hole is arranged above the surveyor's rod; and a wear resistant central line is arranged in the middle of the surveyor's rod. The suspended measuring tape plumb bob provided by the utility model is mainly used for construction works such as coal mine roadways and tunnels and can be also used for other measuring environments.
Description
Technical field
The utility model relates to a kind of suspension type mark plumb bob, and it belongs to field of measuring technique.
Background technology
In present surveying work, the measurement of higher degree is the important component part of surveying work.And in the construction works such as some mine workings, tunnel, for better protection measurements, better guiding construction, measuring point generally is fixed on back, and at this moment, the measurement of higher degree just is different from the ground.
Due to the appearance of total powerstation, at present, the basic skills that the elevations such as underground leveling are measured is progressively replaced by the down-hole trigonometric levelling.The triangulated height basic skills is set up instrument exactly on known point, hang plumb bob etc. as the station mark on front viewpoint, by measuring the discrepancy in elevation of instrument high and station absolute altitude and known point and unknown point, calculates the elevation of unknown point.And the discrepancy in elevation of known point and unknown point wherein is to obtain by instrument, and the high and station absolute altitude of instrument is by oneself measuring acquisition, and this wherein just easily error occurs when measuring the high and station absolute altitude of instrument, affects measuring accuracy.
Being arranged in the measurement of higher degree of top board position at measuring point, also having another kind of method, is exactly measurement of the level.If the employing measurement of the level, precision is higher, but because measuring point is positioned at top board, needs long-time the act to lift levelling pole, and affected by topographic relief, and efficient is slower; If the employing trigonometric levelling during viewpoint, because roof station position control difficulty is larger, artificial measuring error easily occurs before survey.
The utility model content
The utility model just easily the deficiency of error occurs when measuring the high and station absolute altitude of instrument in prior art, and a kind of suspension type mark plumb bob is provided.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of suspension type mark plumb bob comprises the plumb bob body, is provided with above described plumb bob body and is with graduated scale; Described scale below is provided with the hypophysis body by the knot that can be undone by a pull rope of resistance to deformation, and the top is provided with lanyard, and the centre is provided with wear-resisting center line.
Compared with prior art, the beneficial effects of the utility model are: by in conjunction with measurement of the level and trigonometric levelling, gather both advantages, the multiple level improves precision and the efficient of underground height mersurement, improves degree of accuracy and the accuracy of engineerings such as connecting engineering, tunnel piercing, roadway opening; The structural design advantages of simple, economical and practical.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described scale is tape measure.
Adopt the beneficial effect of above-mentioned further scheme to be: the application of tape measure makes collection, it is more convenient to carry.
Further, described lanyard top is provided with hanging hole.
Adopt the beneficial effect of above-mentioned further scheme to be: the convenient suspension, easy to use.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Plumb bob body in the drawings, 1; 2, knot that can be undone by a pull rope; 3, scale; 4, center line; 5, scale; 6, lanyard; 7, hanging hole.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
A kind of suspension type mark plumb bob comprises plumb bob body 1, and described plumb bob body 1 top is provided with the scale 3 with scale 5, and described scale 3 is tape measure; Described scale 3 belows are provided with hypophysis body 1 by the knot that can be undone by a pull rope 2 of resistance to deformation, and the top is provided with the lanyard 6 with hanging hole 7, and the centre is provided with wear-resisting center line 4.
The utility model, non-dismountable between top lanyard 6 and scale 3, to avoid the problems such as damage in unloading process.The bottom is detachable with the plumb bob body 1 of knot that can be undone by a pull rope 2, is furnished with resistance to deformation knot that can be undone by a pull rope 2, to avoid the vertical line distortion.
Increase the scale 3 with scale 5 in the centre, before being used for measuring, viewpoint is hung down high.Bottom stretch-proof knot that can be undone by a pull rope 2 guarantees that knot that can be undone by a pull rope 2 is not out of shape because hanging plumb bob body 1 from above, affects measurement effect; On knot that can be undone by a pull rope 2, clip is arranged, be used for being fixed on measuring point; At first to measure knot that can be undone by a pull rope 2 length, add as constant on the scale 5 of scale 3 below, when measuring knot that can be undone by a pull rope 2 length, consider the deformation that the top knot that can be undone by a pull occurs when hanging on scale 3 measuring points.Center section is the scale 3 with scale 5, comprises this constant of knot that can be undone by a pull rope 2 length in the indicated scale 5 of scale 3, and clear and wear-resistant center line is together arranged in the middle of scale 3, and the below leaves knot that can be undone by a pull in the center, is used for hanging up plumb bob body 1.The utility model is when hanging, and measurement of angle will on unified pedal line, at this moment, when carrying out trigonometric levelling with total powerstation, also can be carried out in top lanyard 6 and middle center line 4, plumb bob body 1 center.
The above is only preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a suspension type mark plumb bob, comprise plumb bob body (1), it is characterized in that: be provided with the scale (3) with scale (5) above described plumb bob body (1); Described scale (3) below is provided with hypophysis body (1) by the knot that can be undone by a pull rope (2) of resistance to deformation, and the top is provided with lanyard (6), and the centre is provided with wear-resisting center line (4).
2. suspension type mark plumb bob according to claim 1, it is characterized in that: described scale (3) is tape measure.
3. suspension type mark plumb bob according to claim 1 and 2 is characterized in that: described lanyard (6) top is provided with hanging hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618354 CN202938817U (en) | 2012-11-21 | 2012-11-21 | Suspended measuring tape plumb bob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618354 CN202938817U (en) | 2012-11-21 | 2012-11-21 | Suspended measuring tape plumb bob |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202938817U true CN202938817U (en) | 2013-05-15 |
Family
ID=48323051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220618354 Expired - Fee Related CN202938817U (en) | 2012-11-21 | 2012-11-21 | Suspended measuring tape plumb bob |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202938817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8967071B2 (en) * | 2011-09-07 | 2015-03-03 | Jtsr, Llc | Guide apparatus |
-
2012
- 2012-11-21 CN CN 201220618354 patent/CN202938817U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8967071B2 (en) * | 2011-09-07 | 2015-03-03 | Jtsr, Llc | Guide apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141121 |
|
| EXPY | Termination of patent right or utility model |