A sag observation rod and its observation method

Abstract

The invention provides a novel sag observation rod, and the observation rod comprises a sag measurement rod body, a sag calculator, and a sag measuring ruler. The sag calculator is used for calculating an observed span sag between two fundamental rods after the parameters of an observed overhead line and the surroundings are input. The sag measuring ruler is used for adjusting the scale of the measuring ruler according to the sag calculated by the sag calculator. The sag measurement rod can quickly calculate the sag of an overhead line, achieves the more visual observation of the sag of the overhead line, is simple in structure, is quick and convenient for operation, is portable, and is low in manufacture cost.

Description

technical field [0001] The invention relates to the technical field of overhead line construction, in particular to an overhead line sag observation rod and an observation method thereof. Background technique [0002] During the construction and transformation of rural power grids, a large number of overhead lines need to be erected. Due to the weight of the wire itself and the span between the supporting towers of the line, within one span in the two-base supporting towers, the lowest point of the wire and the two sides of the wire There is a height difference between the suspension points, and the vertical distance is called the sag of the wire at this point. If the sag is too small, the stress of the wires will be too large and exceed the allowable value of the wires, resulting in broken wires; if the sag is too large, the safety distance between the wires and the ground and the crossing objects will be insufficient, and the cycloid caused by the wind will cause a short c...

AI Technical Summary

Problems solved by technology

[0005] 201210453234.2 discloses a sag rod for measurement. When using this sag rod for measurement, it is necessary to continuously adjust the measuring ruler through visual inspection, which is time-consuming and laborious. Moreover, the hooks at both ends are hung on the wire, so the measuring rod cannot be firmly fixed, and it is easy to shake with the wind. The telescopic rod cannot be fixed after stretching, resulting in a large measurement error

Since the measuring ruler is located at the fixed end of the telescopic rod, the distance between the measuring wires is greatly limited, and it cannot meet the needs of the excessive distance between the two-phase wires of the overhead line and the change of the distance, and the sag rod is easy to fall off and move on the wire of the overhead line.

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