CN214951295U - Device for transmitting precise elevation from ground level point to prism center - Google Patents
Device for transmitting precise elevation from ground level point to prism center Download PDFInfo
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- CN214951295U CN214951295U CN202121420638.2U CN202121420638U CN214951295U CN 214951295 U CN214951295 U CN 214951295U CN 202121420638 U CN202121420638 U CN 202121420638U CN 214951295 U CN214951295 U CN 214951295U
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Abstract
The utility model discloses a device for transmitting precise elevation from a ground level point to the center of a prism, which belongs to the field of precise engineering measurement, and comprises a horizontal reference plate, wherein a vertical rod is vertically arranged at the center of the horizontal reference plate, and the prism is fixedly arranged at the upper end part of the vertical rod; and leveling air bubbles are arranged at the middle part of the vertical rod close to the upper position. The problem of searching the highest point of the leveling point is solved by utilizing the bottom surface with high flatness, and meanwhile, the problem of measurement error of the height of the prism is solved by utilizing the height fixation from the prism on the upright stanchion to the bottom surface of the bottom plate; the level bubbles fixed on the vertical rod ensure the verticality of the observation device in the observation process. Use the utility model discloses to carrying out the difference in height transmission at a distance of 50m left and right sides two levelling points, the error is superior to 0.3mm in the difference in height of the adjacent deformation observation point of inspection, the error is superior to 0.5mm in the elevation of deformation observation point, can satisfy deformation monitoring's technical requirement such as "engineering survey standard" (GB 50026-2020).
Description
Technical Field
The utility model belongs to the precision engineering measurement field especially relates to a device that ground levelling point carries out accurate elevation transmission to the prism center.
Background
In the conventional precision leveling measurement, a leveling rod is erected on a known point and a point to be measured, and a precision leveling instrument is used for reading a front ruler and a rear ruler, so that the height difference between the two points is obtained, and the height is accurately transmitted. When the height difference between the two observation points exceeds the double-ruler measurement range, multiple station transfer measurements are carried out, and for vault settlement observation, an inverted ruler measurement method or a leveling instrument plus a steel hanging ruler or a total station triangle elevation method is adopted. And for the height transmission from the ground level point to the center of the prism, a triangular height method is generally adopted. The multiple station transfer measurement increases the labor intensity and the error to a certain extent, and the inverse ruler measurement method or the leveling instrument plus the steel hanging ruler is greatly influenced by the field environment, and the operation is complicated and the requirement is strict, so that the stability of the observation precision is low. If a total station instrument triangulation height measurement method is adopted, the problems that the bottom of a prism rod cannot be accurately placed at the highest point of a leveling point, the height measurement error of the prism cannot be caused, and the like exist, and the observation result cannot meet the precision requirement.
Therefore, the utility model provides a with the elevation of accurate leveling point from the leveling point accurately transmit for the prism center on waiting to measure the station and then obtain the device of waiting to measure the station elevation
SUMMERY OF THE UTILITY MODEL
The problem that exists to prior art, the utility model provides a solve between two observation points accurate transmission and the ground levelling point of elevation when the discrepancy in elevation surpasses two chi measuring range and carry out accurate elevation transmission difficult problem to the prism center, provide one kind and accurately transmit the elevation of accurate leveling levelling point for the prism center on waiting to measure the station and then obtain the device of waiting to measure the station elevation from the levelling point.
The utility model discloses a device that the ground level point transmits the precision elevation to the prism center, which is characterized in that the device comprises a horizontal reference plate, a vertical rod is vertically arranged at the center of the horizontal reference plate, and the prism is fixedly arranged at the upper end part of the vertical rod; and leveling air bubbles are arranged at the middle part of the vertical rod close to the upper position.
Preferably, the flatness error of the horizontal reference plate is less than 0.03 mm.
Preferably, the vertical rod is fixed on the upper surface of the horizontal reference plate through a fastener screw or welding.
Preferably, the measurement error of the center of the prism from the lower bottom surface of the vertical rod is less than 0.03 mm.
Preferably, the lower end of the vertical rod is uniformly provided with adjustable telescopic supporting legs along the circumferential direction.
Preferably, the prism adopts a vertical coaxial double prism.
The utility model has the advantages and technological effect: the utility model is realized by vertically fixing the high-strength upright stanchion with fixed height on the high-strength wear-resistant flat plate; the problem of searching the highest point of the leveling point is solved by utilizing the bottom surface with high flatness, and meanwhile, the problem of measurement error of the height of the prism is solved by utilizing the height fixation from the prism on the upright stanchion to the bottom surface of the bottom plate; the level bubble fixed on the upright rod ensures the verticality of the observation device in the observation process, and the adjustable foot support ensures the stability of the observation device in the observation process. Use the utility model discloses to carrying out the difference in height transmission at a distance of 50m left and right sides two levelling points, the error is superior to 0.3mm in the difference in height of the adjacent deformation observation point of inspection, the error is superior to 0.5mm in the elevation of deformation observation point, can satisfy deformation monitoring's technical requirement such as "engineering survey standard" (GB 50026) second grade.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a horizontal reference plate; 2. erecting a rod; 3. a prism; 4. leveling air bubbles; 5. the telescopic supporting legs are adjusted.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a device for precise height transmission from a ground level point to the center of a prism includes a horizontal reference plate 1, which is made of a high-strength wear-resistant flat plate, such as austenitic 304 stainless steel, to prevent the bottom surface from being worn due to long-term use and thereby affecting the measurement precision; the problem of searching the highest point of the leveling point is solved by utilizing the bottom surface with high flatness; the center of the horizontal reference base is vertically provided with an upright rod 2, the upper end of the upright rod is fixedly provided with a prism 3, preferably, the horizontal reference plate is a 50 mm-50 mm square plate, the structure is simple, the installation is easy, and the overall height is about 1.5 m; preferably, the prism adopts a vertical coaxial double prism to achieve the purposes of mutually checking measurement results and reducing observation times, and the problem of measurement error of the height of the prism is solved by fixing the height from the prism on the upright pole to the bottom surface of the bottom plate; and a leveling bubble 4 is arranged at the middle part of the upright rod close to the upper position, so that the verticality of the observation device in the observation process is ensured.
Preferably, the flatness error of the horizontal reference plate is less than 0.03mm, so that the influence of the error of the equipment on the measurement result is reduced to 1/10 with required precision.
Preferably, the vertical rod is fixed on the upper surface of the horizontal reference plate through a fastener screw or welding. The present embodiment prefers a welded construction.
Preferably, the measurement error of the center of the prism from the lower bottom surface of the vertical rod is less than 0.03mm, so that the influence of the manufacturing error of the equipment on the measurement result is reduced to 1/10 with required precision.
Preferably, the lower end of the vertical rod is uniformly provided with adjustable telescopic supporting legs 5 along the circumferential direction, the adjustable supporting legs ensure the stability of the device in the observation process, and the adopted telescopic supporting legs can adopt a telescopic tripod structure, such as a supporting leg telescopic structure widely applied to photographic equipment and measuring equipment.
In actual use, when the elevation of two adjacent level points is transmitted and used, the device is leveled and placed on a known point and an unknown point in sequence for observation, the height difference between the center of the prism on the two points and the center of the total station is obtained, the difference between the two height differences is the height difference of the two level points, and the sum of the known point elevation and the height difference is the unknown point elevation.
When the elevation is transmitted from the level point to the center of a certain prism and the device is used, the device is leveled and placed on a known point, the elevation difference between the center of the prism on the known point and the center of the total station is obtained by observing with the high-precision total station, and then the elevation difference between the center of the target prism and the center of the total station is obtained by observing with the target prism with the total station. And subtracting the height difference of the center of the prism on the known point from the height difference of the center of the prism on the target prism and the total station, and subtracting the height of the fixing device to obtain the height difference of the center of the target prism and the known point, wherein the known point elevation plus the height difference is the middle elevation of the target prism.
Use the utility model discloses to carrying out the difference in height transmission at a distance of 50m left and right sides two levelling points, the error is superior to 0.3mm in the difference in height of the adjacent deformation observation point of inspection, the error is superior to 0.5mm in the elevation of deformation observation point, can satisfy deformation monitoring's technical requirement such as "engineering survey standard" (GB 50026) second grade.
To sum up, the utility model provides an accurate transmission and the ground levelling point of elevation carry out accurate elevation transmission difficult problem to the prism center when the difference in height surpasses two chi measuring range between two observation points, thereby it is unfavorable for laying levelling rod, the difference in height great relatively and leads to many times to change the station, can't change high journey transmission occasion such as station very much, or be used for vault settlement monitoring.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A device for transmitting a precise elevation from a ground level point to the center of a prism is characterized by comprising a horizontal reference plate, wherein the center of the horizontal reference plate is vertically provided with a vertical rod, and the upper end part of the vertical rod is fixedly provided with the prism; and leveling air bubbles are arranged at the middle part of the vertical rod close to the upper position.
2. The apparatus of claim 1 for precision elevation transfer of ground level points to the center of a prism, wherein: the flatness error of the horizontal reference plate is less than 0.03 mm.
3. The apparatus of claim 1 for precision elevation transfer of ground level points to the center of a prism, wherein: the vertical rod is fixed on the upper surface of the horizontal reference plate in a fastener screw or welding mode.
4. The apparatus of claim 1 for precision elevation transfer of ground level points to the center of a prism, wherein: the measurement error of the distance between the center of the prism and the lower bottom surface of the vertical rod is less than 0.03 mm.
5. The apparatus of claim 1 for precision elevation transfer of ground level points to the center of a prism, wherein: the lower end of the vertical rod is uniformly provided with adjustable telescopic supporting legs along the circumferential direction.
6. The apparatus of claim 1 for precision elevation transfer of ground level points to the center of a prism, wherein: the prism adopts a vertical coaxial double prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420638.2U CN214951295U (en) | 2021-06-24 | 2021-06-24 | Device for transmitting precise elevation from ground level point to prism center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420638.2U CN214951295U (en) | 2021-06-24 | 2021-06-24 | Device for transmitting precise elevation from ground level point to prism center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214951295U true CN214951295U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121420638.2U Active CN214951295U (en) | 2021-06-24 | 2021-06-24 | Device for transmitting precise elevation from ground level point to prism center |
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| CN (1) | CN214951295U (en) |
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2021
- 2021-06-24 CN CN202121420638.2U patent/CN214951295U/en active Active
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