CN215767048U

CN215767048U - Simple underground folding protractor

Info

Publication number: CN215767048U
Application number: CN202121559517.6U
Authority: CN
Inventors: 郭启琛; 郑文贤; 王俊鑫
Original assignee: XISHAN COAL ELECTRICITY GROUP CO Ltd
Current assignee: XISHAN COAL ELECTRICITY GROUP CO Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-02-08
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a simple underground folding protractor, which comprises a reference scale 1, an azimuth scale 2 and a dial 3; drawing a center line along the length direction of the reference ruler as a standard line I for azimuth angle measurement; the circle center of the dial is fixedly arranged on the reference scale through a fixing buckle 4; a central line is drawn on the azimuth ruler along the length direction of the azimuth ruler and serves as a standard line II for measuring the azimuth angle, a threading hole II is formed in the standard line II of the azimuth ruler, and the threading hole II is bolted with an azimuth ruler extension line 20; the azimuth ruler is movably arranged on the fixing buckle; a vertical line 5 is hung on the fixing buckle, and a heavy hammer 6 drops at the lower end of the vertical line; the intersection point of the standard line I of the reference ruler and the standard line II of the azimuth ruler, the circle center of the dial and the center of the fixing buckle coincide. The utility model realizes the accurate measurement of multi-plane angles, quickly determines the construction direction underground, reduces the number of measuring personnel, and quickly determines the direction of an underground water exploring and draining hole, determines the offset angle in the construction of an anchor rod and an anchor cable, and the like, so that the one-line production work becomes simple and efficient.

Description

Simple underground folding protractor

Technical Field

The utility model relates to the technical field of underground angle measurement, in particular to an underground simple folding protractor.

Background

The determination of simple angle measurements downhole, such as dip angles in coal formations, belts, conveyors, boreholes, etc., is primarily done using grade gauges. The traditional slope gauge measures angles, is limited by heavy sag, and can only measure angles on a vertical surface, such as a drilling inclination angle, a fault inclination angle, a belt inclination angle, a conveyor inclination angle and the like. The method is difficult to measure the angles of a horizontal plane and an inclined plane, for example, the underground water exploration and drainage work, the determination of the inclination angle of a drill hole is easy, but the accurate determination of the azimuth is difficult, 3-4 measuring personnel are often required for accurate determination by using tools such as a total station and a compass for accurate angle measurement, if the accurate instruments are not used, the judgment is simply carried out by the naked eyes of field personnel, the error caused is too large, the actual underground production is delayed, and the great economic loss is generated. Therefore, how to safely and quickly realize underground simple angle measurement is particularly important for future coal mine production.

Disclosure of Invention

The utility model aims to provide an underground simple folding protractor, which can accurately determine the underground direction through the application of the underground simple folding protractor, fill up short plates of which the angles of non-vertical surfaces cannot be determined by a traditional slope gauge, and solve the problem that an instrument is heavy and is not easy to carry.

The utility model is realized by adopting the following technical scheme:

a simple underground folding protractor comprises a reference scale, an azimuth scale and a dial; drawing a center line along the length direction of the reference ruler as a standard line I for azimuth angle measurement; the circle center of the dial is fixedly arranged on the reference scale through a fixing buckle; a central line is drawn on the azimuth ruler along the length direction of the azimuth ruler and serves as a standard line II for azimuth angle measurement, a threading hole II is formed in the standard line II of the azimuth ruler, and the threading hole II is bolted with an extension line of the azimuth ruler; the azimuth ruler is movably arranged on the fixing buckle; a vertical line is hung on the fixing buckle, and a heavy hammer is hung at the lower end of the vertical line; and the intersection point of the standard line I of the reference ruler and the standard line II of the azimuth ruler, the circle center of the dial and the center of the fixing buckle coincide.

Angle measurement: when the vertical plane is measured, the reference ruler and the azimuth ruler can be directly overlapped to form a ruler, the ruler is close to and parallel to an object to be measured, and the ruler is combined with the heavy hammer and the dial to measure the inclination angle. When a horizontal plane or an inclined plane is measured, the weight sag is collected, as shown in fig. 2, the reference ruler is parallel to the known roadway trend or inclined reference line, (if necessary, an extension line of the azimuth ruler is utilized) and the reference ruler is rotated to a required angle and fixed, and the angle of the central line or the diagonal angle of the two rulers on the dial is read, namely the included angle of the two directions on the horizontal plane or the inclined plane.

The utility model has the following advantages:

1. the multi-plane angle accurate measurement is realized: the method can accurately measure the angles of a vertical plane, a horizontal plane and an inclined plane, and fills up short plates of which the angles of non-vertical planes cannot be determined by the traditional slope gauge.

2. The underground rapid determination of the construction direction is realized: on the basis that the existing roadway position is known, the reference ruler is selected as the roadway trend, the position of the underground water exploration and drainage hole and the offset angle determined by the construction of the anchor rod and the anchor cable can be quickly determined by rotating the position ruler to the required angle and fixing, and the measurement of various angles can be completed by only 1-2 measuring personnel.

3. The instrument is light and portable, the manufacturing cost is low, the manufacturing of the folding protractor is simple, only two transparent plastic rulers and one transparent plastic disc are needed, the cost is not more than 4-5 yuan, and the ten-thousand yuan benefit can be brought to underground production.

The utility model has reasonable design, realizes the accurate measurement of multi-plane angles, quickly determines the construction direction underground, reduces the number of measuring personnel, and achieves the purposes of quickly determining the position of an underground water exploring and draining hole, determining the offset angle during the construction of an anchor rod and an anchor cable, and the like, so that the one-line production work becomes simple and efficient, and the utility model has good practical application value.

Drawings

Fig. 1 shows a schematic structural view of the present invention.

In fig. 1: 1-reference ruler, 2-azimuth ruler, 3-dial scale, 4-fixing buckle, 5-vertical line and 6-heavy hammer; 101-standard line I, 102-threading hole I; 20-azimuth ruler extension line, 201-standard line II, 202-threading hole II.

FIG. 2 is a schematic view showing a state in which the horizontal or inclined surface measurement is performed according to the present invention.

In fig. 2: 100-folding protractor; 200-lane walls; 300-drilling machine.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings.

The traditional slope gauge is difficult to measure angles of a horizontal plane and an inclined plane, and can realize accurate angle positioning by developing a simple folding protractor, so that the traditional accurate measurement of 3-4 measuring personnel is reduced to only 1-2 measuring personnel. Meanwhile, the instrument is portable and easy to carry, and the underground azimuth can be quickly and accurately measured on the basis of the known azimuth of the existing roadway by adding the extension line.

A downhole simple folding protractor mainly comprises a reference scale 1, an azimuth scale 2 and a dial 3, and is specifically shown in figure 1.

A reference scale: the reference ruler for angle measurement is made of a plastic transparent ruler, the length of the reference ruler is 10cm, a middle line is drawn on the reference ruler 1 along the length direction of the reference ruler and serves as a standard line I101 for azimuth angle measurement, and threading holes I102 are formed in the standard line I101 every 3 cm.

An azimuth ruler: the azimuth ruler for angle measurement is made of a plastic transparent ruler, the length of the azimuth ruler is 10cm, a central line is drawn on the azimuth ruler 2 along the length direction of the azimuth ruler to serve as a standard line II 201 for azimuth angle measurement, threading holes II 202 are formed in the standard line II 201 every 3cn, and an azimuth ruler extension line 20 is bolted to one threading hole II 202.

Dial plate: the transparent plastic ruler is made into a circle, the circle is divided into 4 quadrants by taking 90 degrees as a datum line, and then the circle is equally divided according to the precision of 5 degrees, so that a mounting hole is made at the center of the circle.

Heavy hanging: the fiber length of the vertical line is slightly larger than the radius of the dial scale, and the vertical line is tied with a weight to be used as a heavy plumb.

Fixing and buckling: as a pivot for connecting the reference scale, the azimuth scale, the dial and the plumb.

Azimuth ruler extension line: when the position of a certain point is confirmed to needs, because position chi length is only 10cm, easily produces visual error, consequently extends the extension line through the through wires hole on the position chi, straightens the line, and under the effect of extension line tension, the position chi free rotation is to the extension line position to can the precision measurement position, make the reading of position chi and reference ruler more accurate.

During specific preparation, firstly, the circle center of the dial 3 is fixedly arranged at a certain point on a standard line I101 of the reference ruler 1 through a fixing buckle 4, and then a reserved mounting hole of the azimuth ruler 2 on a standard line II 201 is movably arranged on the fixing buckle 4; namely, the reference scale and the dial are firmly fixed by the fixing buckle 4, and a part of the space is left, so that the azimuth scale can freely rotate on the reference scale, and then the intersection point of the standard line I101 of the reference scale 1 and the standard line II 201 of the azimuth scale 2, the circle center of the dial 3 and the center of the fixing buckle 4 are superposed. Finally, a vertical line 5 is hung on the fixing buckle 4, and a heavy hammer 6 is fastened at the lower end of the vertical line 5.

The specific angle measurement steps are as follows:

when the vertical plane is measured, the reference ruler and the azimuth ruler can be directly overlapped to form a ruler, the ruler is close to and parallel to an object to be measured, and the ruler is combined with the heavy hammer and the dial to measure the inclination angle.

When a horizontal plane or an inclined plane is measured, the weight sag is collected, as shown in fig. 2, the reference ruler is parallel to the known roadway trend or inclined reference line, (if necessary, an extension line of the azimuth ruler is utilized) and the reference ruler is rotated to a required angle and fixed, and the angle of the central line or the diagonal angle of the two rulers on the dial is read, namely the included angle of the two directions on the horizontal plane or the inclined plane.

The simple folding protractor is used for measuring the underground relevant angle simply and effectively, the angle can be quickly and accurately measured under the background of poor underground environment and limited working conditions, the construction direction is determined, short plates of which the angles of non-vertical surfaces cannot be determined by a traditional slope gauge are filled, the efficiency of water prevention and control work and line production construction is greatly improved, and reciprocating work is reduced. By using the device, the accurate positioning of the drilling direction can be realized from the aspects of measuring time, measuring method and measuring accuracy, and the social and economic benefits are remarkable.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the detailed description is made with reference to the embodiments of the present invention, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which shall be covered by the claims of the present invention.

Claims

1. The utility model provides a simple and easy folding protractor in pit which characterized in that: comprises a reference scale (1), an azimuth scale (2) and a dial (3);

a center line is drawn on the reference ruler (1) along the length direction of the reference ruler as a standard line I (101) for azimuth angle measurement;

the circle center of the dial (3) is fixedly arranged on the reference scale (1) through a fixing buckle (4);

a central line is drawn on the azimuth ruler (2) along the length direction of the azimuth ruler as a standard line II (201) for measuring azimuth angles, a threading hole II (202) is formed in the standard line II (201) of the azimuth ruler (2), and an azimuth ruler extension line (20) is bolted to the threading hole II (202); the azimuth ruler (2) is movably arranged on the fixing buckle (4);

a vertical line (5) is hung on the fixing buckle (4), and a heavy hammer (6) falls on the lower end of the vertical line (5);

the intersection point of the standard line I (101) of the reference scale (1) and the standard line II (201) of the azimuth scale (2), the circle center of the dial (3) and the center of the fixing buckle (4) coincide.

2. The downhole simplified folding protractor of claim 1, wherein: the standard ruler (1) is made of transparent plastics, and threading holes I (102) are formed in the standard line I (101) every 3 cm.

3. The downhole simplified folding protractor according to claim 1 or 2, wherein: the azimuth ruler (2) is made of transparent plastics, and threading holes II (202) are formed in the standard line II (201) every 3 cm.

4. The downhole simplified folding protractor of claim 3, wherein: the length of the reference ruler (1) and the length of the azimuth ruler (2) are both 10 cm.

5. The downhole simplified folding protractor of claim 4, wherein: the dial (3) is divided into 4 quadrants by taking 90 degrees as a reference line and then is equally divided according to the precision of 5 degrees.

6. The downhole simplified folding protractor of claim 5, wherein: the length of the perpendicular line (5) is larger than the radius of the dial (3).