Precise leveling detection method based on differential technology and telescopic indium steel bar code ruler

A technology of bar code ruler and indium steel, which is applied in the field of engineering survey and geodetic survey, and can solve the problems such as the influence of the accuracy of telescopic joints

Inactive Publication Date: 2016-08-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that in the leveling process, the accuracy of the indium steel ruler is one of the key factors to ensure the accuracy of the leveling measurement, and the use of the indium steel ruler with adjustable length will inevitably have a telescopic connection when using the existing method for leveling measurement The accuracy impact caused by the error at

Method used

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  • Precise leveling detection method based on differential technology and telescopic indium steel bar code ruler
  • Precise leveling detection method based on differential technology and telescopic indium steel bar code ruler
  • Precise leveling detection method based on differential technology and telescopic indium steel bar code ruler

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 3 As shown, a scalable indium steel bar code ruler includes an inner rectangular steel pipe 2, an outer rectangular steel pipe 3 and a screw pin 4, the inner rectangular steel pipe 2 is sleeved in the outer rectangular steel pipe 3, and the outer rectangular steel pipe 3 is provided with the The screw pin bolt 4 is provided with an indium steel barcode tape 1 on the front side of the outer rectangular steel pipe 3, and a circular level is provided on the rear side, and the vertical position of the retractable indium steel barcode ruler is adjusted by the circular bubble 6 in the circular level. The retractable indium steel bar code ruler of the present invention utilizes the inner rectangular steel pipe and the outer rectangular steel pipe that are set together to realize the expansion and contraction of the length of the indium steel bar code ruler. Stability, effectively guarantee the accuracy in the measurement process.

[0043] In the em...

Embodiment 2

[0048] A stretchable indium steel bar code ruler, the structure is as described in Example 1, the difference is that the length of the outer rectangular steel pipe is 1500mm, and the length of the inner rectangular steel pipe is 1480mm. Five groups of said screw pins 4 are arranged on the outer rectangular steel pipe 3, and each group includes three screw pins 4. When the length of the inner rectangular steel pipe and the outer rectangular steel pipe is longer, a screw pin group can be added to increase the stability of the connection after elongation.

Embodiment 3

[0050] A kind of retractable indium steel bar code ruler, structure as described in embodiment 1, its difference is: be provided with a base 5 at the bottom of inner rectangular steel pipe 2, base 5 selects a thickness to be the steel plate of 8mm for use, base 5 The surface area is greater than the cross-sectional area of ​​the outer rectangular steel pipe 3. A base 5 is provided at the bottom of the inner rectangular steel pipe 2, which is beneficial to the placement of the indium steel barcode ruler and increases the stability of the indium steel barcode ruler during measurement.

[0051] In addition, the rear sides of the inner rectangular steel pipe 2 and the outer rectangular steel pipe 3 are arranged in trapezoidal grooves, and handrails 7 are arranged on the two side walls of the trapezoidal grooves. The advantage of this design is that when carrying out leveling, the handrail 7 is convenient for the operator to grasp the indium steel bar code ruler.

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Abstract

The invention relates to a precise leveling detection method based on differential technology and a telescopic indium steel bar code ruler. The telescopic indium steel bar code ruler comprises an inner rectangular pipe, an outer rectangular pipe and a spiral pin; the inner rectangular steel pipe is sheathed in the outer rectangular steel pipe; the spiral pin is arranged on the outer rectangular steel pipe. The front side of the outer rectangular steel pipe is provided with the indium steel bar, and the back side is provided with a level indicator. The telescopic indium steel bar code can realize retractable length, is conducive to transport and carry, and can adapt to the reading of level indicator in different height. The precise leveling detection method can effectively eliminate the zero difference of the indium steel bar code ruler and error at the telescopic connection part, can meet and achieve requirements of precise leveling technology in the process of measurement of foundation settlement, especially has great value in building settlement observation. The invention has good economic and social benefits, and is worthy of popularization and application.

Description

technical field [0001] The invention relates to a precision leveling measurement method based on differential technology and a stretchable indium steel bar code ruler, belonging to the technical fields of engineering surveying and geodetic surveying. Background technique [0002] Nowadays, precision levels and precision leveling rods are often used in high-level leveling surveys, especially in settlement observations of buildings. The national standard stipulates that the national third and fourth class leveling surveys use 2m or 3m wooden area format double-sided leveling rods, and the national first and second class leveling surveys must use 3m indium steel rulers (with precision optical levels) or 2m (or 3m) indium Steel bar code ruler (with precision electronic level). Tower rulers or folding rulers must not be used for national level leveling. However, it is very difficult to carry a 2m (or 3m) leveling rod. At present, many surveying units, especially those doing bui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王登杰王岩
Owner SHANDONG UNIV
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