CN203489825U - Measuring scale special for measuring burial depth of electric pole - Google Patents

Abstract

The utility model discloses a measuring ruler specially used for measuring the buried depth of electric poles, which belongs to a measuring tool specially used for electric power systems. The utility model is composed of a strip-shaped measuring ruler with a scale made of bendable and inelastic material. A notch is arranged at the head end of the measuring ruler, and the height of the notch is not less than that of the tail end. The utility model has the advantages of simple structure and low cost. When measuring, it is only necessary to wind the ruler along the surface of the electric pole and connect the end to the end. Through the scale on the ruler, it can be known whether the burial depth of the electric pole is within the normal range. No need to use other equipment; high measurement accuracy, high work efficiency; and easy to carry, easy to popularize and use on a large scale.

Description

Measuring ruler for measuring the buried depth of electric poles

technical field

The utility model relates to a measuring tool.

Background technique

After the power grid project is completed, the buried depth of the poles should be measured and accepted. However, since the bottom of the pole is buried underground, it cannot be observed intuitively, so it is impossible to directly measure whether the buried depth of the pole meets the standard. The existing traditional methods for measuring the buried depth of electric poles are as follows:

1. Spot check the burial depth of several electric poles: select several electric poles, dig out the foundation of the electric poles, measure the buried depth of the electric poles with a ruler, and take the average buried depth of several electric poles as the value of the buried depth of all electric poles. This method is not only time-consuming and laborious, but also it is impossible to dig out the foundation of each electric pole for measurement, so the accuracy of the measurement results is low and the adaptability is not high.

2. Use laser equipment for measurement. This method has high measurement accuracy, but the cost of laser height measurement equipment is high, and it is not easy to carry, the measurement cost is too high, and the measurement efficiency is low.

3. Visual inspection by experienced veteran workers. Although this method is convenient, the error is too large.

There is an urgent need for a tool for measuring the buried depth of electric poles with low cost, easy operation and high measurement accuracy.

Utility model content

The technical problem to be solved by the utility model is to provide a measuring ruler specially used for measuring the buried depth of electric poles with simple structure, low cost, easy operation and high measurement accuracy.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a measuring ruler specially used for measuring the buried depth of the electric pole, which is composed of a strip measuring ruler with a scale for measuring by winding the electric pole. The part near the head end is provided with a notch, and the height of the notch is not less than the height of the tail end.

The strip measuring ruler is made up of a rectangular first ruler and a second ruler, and the height of the first ruler is greater than the height of the second ruler; the notch is positioned on the first ruler, and the height of the notch is equal to the height of the second ruler.

There are four kinds of scales uniformly arranged along the height direction of the strip measuring ruler, which are respectively suitable for common electric poles with a diameter of 10 meters and 150 meters, a diameter of 12 meters and 190 meters, a diameter of 15 meters and 190 meters, and a diameter of 15 meters and 230 meters.

The technical progress obtained by adopting the above technical solution is: the utility model has simple structure and low cost. When measuring, only the ruler needs to be wound along the surface of the electric pole, and the head and tail are connected, and the buried depth of the electric pole can be known through the scale on the ruler. Whether it is within the normal range, no excavation is required, and no other equipment is required; the measurement accuracy is high, and the work efficiency is high; and it is easy to carry and widely used.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Among them, 1. Tail end, 2. First ruler, 3. Head end, 4. Notch, 5. Second ruler.

Detailed ways

As can be seen from Figure 1, the measuring ruler dedicated to measuring the buried depth of electric poles is composed of a strip measuring ruler with a scale for measuring by winding the pole. The strip measuring ruler consists of a rectangular first point Ruler 2 and second ruler 5 are formed, and the height of described first ruler 2 is greater than the height of second ruler 5; Be provided with gap 4 on first ruler 2, the height of gap 4 is equal to second ruler 5 The height; four scales are evenly arranged along the height of the strip measuring ruler.

The method of use of the utility model is: use a strip measuring ruler to wind along the exposed part of the target electric pole, and connect the head end 3 of the measuring ruler to the tail end 1. In order to ensure convenient and accurate measurement, place the tail end 1 of the measuring ruler On the gap 4, ensure that the measuring ruler is in close contact with the surface of the pole, and at the same time try to ensure that the measuring ruler as a whole is parallel to the ground. After the end to end of the measuring ruler is connected, observe the scale displayed at the end to end connection. Through this scale, you can know whether the buried depth of the pole meets the requirements.

In order to ensure the accuracy of measurement, the measuring ruler needs to be made of bendable but non-stretchable material, which is common sense known to those skilled in the art. As a measuring ruler, it usually has the same height from the head to the tail, but in order to measure more conveniently and accurately, the height of the preferred tail end 1 of the present invention is slightly less than the height of the head end 3, so that the tail end 1 can pass through the gap 4, Make the measurement results more accurate. The height of the tail end 1 is usually equal to the height of the notch 4, and of course it can also be smaller than this height.

The setting of the scale should be determined according to the actual needs. Here take the scale as the standard length as an example to introduce the working principle of the present utility model. Set the 0 scale at the head end 3 of the measuring ruler, and then set the scale according to the standard length. At this time, the measuring ruler is the tape measure we usually use.

The utility model mainly utilizes the principle that the taper of the electric pole is constant—the standard taper of all types of electric poles is 1/75. According to the calculation, the circumference of different buried depths of different types of poles can be obtained.

First, the taper C of the target pole is actually measured, and then the circumference of the exposed part of the target pole at a height h from the ground is measured with a measuring ruler. Connect the measuring ruler head to tail, and observe the scale at the junction. Assuming that the scale is 62.8cm at this time, then the diameter d1 corresponding to the height h is 20cm. Usually the circumference of the bottom of the pole is fixed, that is, the diameter of the bottom is also fixed, we can know it through measurement, and set this value as D. If the buried depth of the pole is H, then the taper of the pole can be expressed as C=(D-20)/(H+h). At this time, C, D, and h are all known values, and H can be obtained by calculation. In this way, it is also possible to know whether the buried depth H meets the requirements.

If we go one step further and use the calculated buried depth as a scale, then the measured result obtained is directly the actual buried depth of the pole. This only requires one more conversion step. You can also do another step of conversion to convert the actual buried depth into the difference with the standard buried depth, then the difference between the actual buried depth of the pole and the standard buried depth is obtained through the measuring ruler. According to this difference, the staff can carry out corresponding processing.

Different types of poles have different standard buried depths. Usually, the standard buried depth of a 10-meter pole is 1500mm, that of a 12-meter pole is 1700mm, and that of a 15-meter pole is 2200mm. In order to make the scope of application of the utility model wider, several scales suitable for poles of different heights can be set on the measuring ruler according to the above-mentioned algorithm.

The utility model has a simple structure, the materials used are relatively common, and the cost is relatively low; the operation is simple, and the measuring ruler only needs to be wound along the surface of the pole when measuring, and the head and the tail are connected, and the pole can be known through the scale on the ruler. Whether the buried depth is within the normal range, no excavation is required, and no other equipment is required; the principle of constant taper of the pole is used, the measurement accuracy is high, and the efficiency of the measurement work is also improved; more importantly, the utility model is easy to carry, It is convenient to popularize and use on a large scale.

Claims (3)

1. A measuring ruler specially used for measuring the buried depth of electric poles, which is characterized in that it is composed of a strip-shaped measuring ruler with scales for measuring by winding electric poles, and a part near the head end (3) of the measuring ruler is set There is a notch (4), and the height of the notch (4) is not less than the height of the tail end (1). 2. The measuring ruler dedicated to measuring the buried depth of electric poles according to claim 1, characterized in that the strip-shaped measuring ruler is composed of a rectangular first ruler (2) and a second ruler (5), The height of the first ruler (2) is greater than the height of the second ruler (5); the gap (4) is located on the first ruler (2), and the height of the gap (4) is equal to the height of the second ruler ( 5) The height. 3. The measuring ruler dedicated to measuring the buried depth of electric poles according to claim 1, characterized in that four scales are uniformly arranged along the height direction of the strip measuring ruler.

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