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A retractable indium steel barcode leveling rod and a precision leveling method for even-numbered stations

A technology of level measurement and leveling rod, which is applied in height/level measurement, measuring devices, surveying and mapping and navigation, etc. It can solve problems such as impact, error accuracy of telescopic joints, etc., and achieve convenient length adjustment, eliminate errors, and good promotion and application value Effect

Inactive Publication Date: 2018-06-22
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 national high-level 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 is bound to be difficult when using the existing method for leveling measurement. The accuracy impact caused by the error at the telescopic connection

Method used

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  • A retractable indium steel barcode leveling rod and a precision leveling method for even-numbered stations
  • A retractable indium steel barcode leveling rod and a precision leveling method for even-numbered stations
  • A retractable indium steel barcode leveling rod and a precision leveling method for even-numbered stations

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Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 3 As shown, a retractable indium steel barcode level gauge 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 leveling rod is adjusted by the circular bubble 6 in the circular level.

[0032] In this embodiment, the inner rectangular steel pipe 2 and the outer rectangular steel pipe 3 are made of aluminum alloy. The length of the outer rectangular steel pipe is 1000mm, the width is 85mm, and the thickness is 40mm; the length of the inner rectangular steel pipe is 980mm, the width is 80mm, and the thickness is 35mm.

[0033] Three groups of said spi...

Embodiment 2

[0037] A kind of retractable indium steel bar code level gauge, the structure is as described in embodiment 1, and its difference is: the length of the outer rectangular steel pipe is 1500mm, the length of the inner rectangular steel pipe is 1480mm, and five groups of the outer rectangular steel pipe 3 are set. Screw pins 4, 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

[0039] A kind of retractable indium steel barcode level gauge, 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 The surface area of ​​5 is greater than the cross-sectional area of ​​the outer rectangular steel pipe 3. A base 5 is arranged at the bottom of the inner rectangular steel pipe 2, which is conducive to placing the leveling rod and increasing the stability of the leveling rod during measurement.

[0040] 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. When performing leveling, the handrail 7 is convenient for the operator to grasp the leveling rod.

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Abstract

The invention relates to a telescopic invar barcode leveling rod, and a precise leveling method using cooperation of the telescopic invar barcode leveling rod with an even number of stations. The telescopic invar barcode leveling rod comprises an inner rectangular steel tube, an outer rectangular steel tube and spiral pins, the inner rectangular steel tube is sleeved in the outer rectangular steel tube, the outer rectangular steel tube is provided with the spiral pins, the front side surface of the outer rectangular steel tube is provided with an invar barcode ribbon, and the rear side surface of the outer rectangular steel tube is provided with a leveler. Even-number station measurement between a point A and a point B is carried out through the measurement method when the telescopic invar barcode leveling rod is used to measure a height difference between the point A and the point B, so the measurement precision in the leveling process is guaranteed. The telescopic invar barcode leveling rod has the advantages of simple structure, convenient use and carrying, economy cost saving, and reaching of precision requirements in the leveling process by means of the precise leveling method.

Description

technical field [0001] The invention relates to a retractable indium steel barcode level gauge and a precision leveling measurement method matched with even-numbered stations, 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-precision leveling surveys, especially in building settlement observations. 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 d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王登杰吕长荣闫忠明王岩
Owner SHANDONG UNIV
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