CN209802348U

CN209802348U - Leveling rod capable of accurately reading

Info

Publication number: CN209802348U
Application number: CN201920467266.5U
Authority: CN
Inventors: 曹翠华; 刘航
Original assignee: Xian University of Science and Technology
Current assignee: Xian University of Science and Technology
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-12-17
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a leveling rod capable of reading accurately, a rod body is provided with round leveling bubbles, sawtooth-shaped equal-interval ruling and sawtooth-shaped equal-interval ruling E characters are drawn on the surface of a strip-shaped rod, digital marks are drawn on the sides beside the equal-interval ruling, and the vertical distances above and below the sawtooth are equal; short scribes are drawn on the surface of the long strip-shaped ruler, and the height of the short scribes is half of that of the scribes with equal intervals. The utility model discloses accomplish more meticulous scale, make things convenient for surveyor's more swift, accurate reading on the levelling rod. Meanwhile, the leveling ruler surface also takes care of the surveyors who are used to the original ruler surface, so that a new ruler surface is designed and improved on the basis of the original ruler surface, thereby taking care of the habits of most surveyors and improving the reading precision.

Description

Leveling rod capable of accurately reading

Technical Field

The utility model belongs to the technical field of the levelling rod, concretely relates to levelling rod that can accurate reading.

Background

Basic principle of leveling: the height difference between two points is measured, leveling rulers are respectively erected on the two points, and the reading numbers of the leveling rulers erected on the two points are read by utilizing the horizontal sight line provided by the leveling instrument, so that the height difference between the two points is obtained, and the height of an unknown point is calculated from the height of a known point.

The optical leveling method which is most used at present and can meet various grades is adopted in the optical leveling process, and an optical leveling instrument and an equally spaced scribing leveling rod are adopted in the optical leveling process. When the optical level is used for measurement, the level is fixed on a tripod which is well arranged, the level is leveled according to the tube level air bubbles of the level, then the leveling rod is aligned, focusing is carried out until the leveling rod scales are clearly observed by the level, then the position of a central thread on a dividing plate of the level on the leveling rod is read according to the main reading part of the height of a digital meter, and then the small reading part is read according to the relative distance of the central thread and the ruling of the leveling rod. And calculating the height difference according to the middle wire reading of the leveling rod at different points. And calculating the distance between the leveling rod and the leveling instrument according to the reading of the upper wire and the lower wire on the dividing plate of the leveling instrument and the principle of similar triangle.

In actual leveling work, optical leveling mainly accomplishes the reading by the manual work, therefore the error that the result of measurement can bring the surveyor to cause, especially to longer level route, has surveyor's alternation problem, because everyone estimates to read the difference, so can influence the precision of level result to a certain extent. In addition, due to the factors of sunlight, long-time observation and the like, the deviation of the reading is estimated when the measurer reads the data.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough, an object of the utility model is to provide a levelling rod of accurate reading of ability. This levelling rod can accomplish more meticulous scale, makes things convenient for surveyor's more swift, accurate reading on the levelling rod.

In order to realize the purpose, the technical scheme of the utility model is that: a leveling rod capable of accurately reading is characterized in that a rod body is provided with round leveling bubbles, a long strip-shaped rod surface is provided with sawtoothed equal-interval ruling and sawtoothed equal-interval ruling E characters, digital marks are arranged beside the sawtoothed equal-interval ruling, and the vertical distances above and below the sawtoothed are equal; short scribes are drawn on the surface of the long strip, the short scribes are positioned on one side of the E-shaped character, the vertical distances between the short scribes are equal, and the height of the short scribes is half of that of the scribes with equal intervals.

The utility model discloses accomplish more meticulous scale, make things convenient for surveyor's more swift, accurate reading on the levelling rod. Meanwhile, the leveling ruler surface also takes care of the surveyors who are used to the original ruler surface, so that a new ruler surface is designed and improved on the basis of the original ruler surface, thereby taking care of the habits of most surveyors and improving the reading precision.

Compared with the prior art, the utility model has the following advantage:

1. the utility model has the advantages of simple structure, novel in design is reasonable.

2. The target is large, and the reading is quickly estimated according to the small partition, so that the method is quick and accurate.

3. The leveling rod surface also takes care of the surveyors who are used to use the original rod surface, and design improvement is carried out on the basis of the original rod surface, so that the habits of most of the surveyors are taken care of, and the reading precision can be improved.

Drawings

Fig. 1 is a schematic view of the leveling rod of the present invention.

Description of reference numerals: a ruler body 1; scribing at equal intervals 2; short scribing 3; an axis 4; a circular leveling bubble 5; e word 6.

Detailed Description

As shown in fig. 1, the utility model relates to a levelling rod of ability accurate reading, chi body 1 adopts rectangular shape, non-deformable's material to make, like indium steel, glass steel, the levelling rod of low precision can adopt materials such as high-quality timber or aluminum alloy to make. A round leveling bubble 5 is arranged on the ruler body 1, a sawtooth-shaped equal interval scribing 2 and a sawtooth-shaped equal interval scribing E character 6 are drawn on the surface of the long strip ruler, a digital mark is arranged beside the equal interval scribing, the digital mark indicates the height of one edge of one scribing of the equal interval scribing 2, an Arabic number is adopted, and a large leveling reading can be obtained through the digital mark.

The middle of the equal interval scribing 2 and the equal interval scribing E word 6 is sawtooth-shaped, and the vertical distance above and below the sawtooth is equal. For reading convenience, short scribes 3 are drawn on the surface of the long strip-shaped ruler, the short scribes 3 are positioned on one side of an E-shaped character, the vertical distances between the short scribes 3 are equal, and the heights of the short scribes 3 are half of those of the scribes 2 with equal intervals.

When leveling is carried out, firstly, an instrument is arranged, a tripod is erected, and then a leveling rod is arranged on the tripod; secondly, roughly leveling, namely centering the circular leveling bubble 5 by adjusting the foot screw so as to enable the vertical axis of the instrument to be approximately plumb; thirdly, aiming the leveling rod, rotating the eyepiece focusing screw to enable the cross-hair image in the telescope to be very clear; fourthly, accurately leveling, rotating the slightly inclined screw, and adjusting until the air bubbles of the leveling tube are closely matched (centered), wherein the sight line is horizontal; and fifthly, reading by using a cross wire, obtaining a large reading of leveling measurement by digital marking, scribing 2 and short scribing 3 at equal intervals, reading a small reading part according to the relative scribing distance between the middle wire and the leveling rod, combining the large reading part and the small reading part to obtain leveling data, and calculating the height difference between different points according to the reading of the middle wire of the leveling rod at different points.

The utility model discloses the left ruling of symmetry axis 4 still can make on the right side of symmetry axis 4, also can the reading, and only the outward appearance is different.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. A leveling rod capable of accurately reading is characterized in that a rod body (1) is provided with round leveling bubbles (5), sawtooth-shaped equal-interval ruling (2) and sawtooth-shaped equal-interval ruling E words (6) are drawn on the surface of a strip-shaped rod, digital marks are drawn beside the equal-interval ruling, and the vertical distances above and below the sawteeth are equal; short scribes (3) are further drawn on the surface of the long strip-shaped ruler, the short scribes (3) are located on one side of the E-shaped ruler, the vertical distances between the short scribes (3) are equal, and the heights of the short scribes (3) are half of those of the scribes (2) with equal intervals.