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Extension-type invar bar code rod and precise leveling method thereof

A bar code ruler and indium steel technology, applied in the fields of engineering surveying and geodetic surveying, can solve problems such as the influence of the precision of telescopic joints, and achieve the effects of being beneficial to transportation and carrying, convenient for length adjustment, and good for popularization and application value.

Inactive Publication Date: 2016-06-22
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 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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  • Extension-type invar bar code rod and precise leveling method thereof
  • Extension-type invar bar code rod and precise leveling method thereof
  • Extension-type invar bar code rod and precise leveling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 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 indium steel ruler is adjusted by the circular bubble 6 in the circular level.

[0029] In the 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.

[0030] Three groups of said spiral...

Embodiment 2

[0034] A kind of retractable indium steel bar code ruler, structure as described in embodiment 1, its difference is: the length of outer rectangular steel pipe is 1500mm, the length of inner rectangular steel pipe is 1480mm; 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

[0036] 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 ruler and increases the stability of the indium steel ruler during measurement.

[0037] 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 benefit of this design is that when carrying out leveling, the handrail 7 is convenient for the operator to hold the indium steel ruler.

[0038] Example 3:

[0039] A method for ca...

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Abstract

The invention relates to an extension-type invar bar code rod and a precise leveling method of the extension-type invar bar code rod. The extension-type invar bar code rod comprises an inner rectangular steel tube, an outer rectangular steel tube and a screw bolt pin, wherein the inner rectangular steel tube is sheathed in the outer rectangular steel tube, the screw bolt pin is arranged on the outer rectangular steel tube, an invar bar code band is arranged on the front side surface of the outer rectangular steel tube, and a level is arranged on the rear side surface of the outer rectangular steel tube. According to the extension-type invar bar code rod and the precise leveling method of the extension-type invar bar code rod, when the extension-type invar bar code rod is used for measuring height difference between A and B points, the same extension-type invar bar code rod is used for measurement between A and B points and the leveling precision is ensured. The extension-type invar bar code rod has a simple structure and can be carried and used conveniently, the economic cost is saved, and the precise leveling method can achieve the same precision requirement in a leveling process.

Description

technical field [0001] The invention relates to a retractable indium steel barcode ruler and a precision leveling measurement method thereof, belonging to the technical fields of engineering measurement and geodetic measurement. 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 third and fourth grades of the country shall use 2m or 3m double-sided indium steel ruler in the wooden area format, and the first and second grades of the country shall use the 3m indium steel ruler (with precision optical level) 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) indium steel ruler. At present, many measurement units, especially those that do building settl...

Claims

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Application Information

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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王登杰王岩
Owner SHANDONG UNIV
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