Portable line tightening device

Abstract

The invention discloses a portable line tightening device, and relates to the field of power supply line construction. The portable line tightening device comprises a lifting device which is provided with a hollow square outer cylinder. The outer cylinder is provided with a rack sliding in the outer cylinder. A ratchet box is arranged in the front part of the outer cylinder. The ratchet box is internally hinged with a ratchet meshed with the rack, and is externally hinged with a handle. The front end of the handle is hinged with a front pawl which is matched with the ratchet and equipped with a torsion spring. The ratchet box is further internally hinged with a rear pawl which is disposed in back of the ratchet, matched with the ratchet, and equipped with a torsion spring. A fixing ring connected with the cross arm of a pole is arranged at the front end of the rack. The side of the fixing ring is connected through a fixing rope with a hook b which can hook a line clamping device when the lifting device is contracted to a minimum. The rear end of the lifting device is connected with the line clamping device through a hook a, and the line clamping device clamps a cable through match between a lower line clamping sleeve and an upper line clamping sleeve. The portable line tightening device is compact in structure, convenient to carry, reliable in tightening, capable of effectively preventing downward cable loosening, and applicable to occasions with large tension travel.

Description

technical field [0001] The invention relates to the field of power supply line construction, in particular to a cable tightening device. Background technique [0002] During the construction or inspection of overhead high-voltage lines in the power system, the tension of the high-voltage lines is a very important task, which directly affects the use of the entire power line. A short circuit occurs when the collision occurs; if the power line is too tight, it is easy to break the line or pull the pole. Usually, manual tensioning is adopted for the tensioning of high-voltage lines, but the tensioning effect is not ideal, the work efficiency is low, and the labor intensity is also relatively large. In the past, most of the tools used to achieve the function of tightening the wire were to clamp the cable with a wire clamp and then use the lifting device to pull the cable to achieve wire tightening. However, the use of tools in line construction and accident handling also has th...

AI Technical Summary

Problems solved by technology

[0002] During the construction or inspection of overhead high-voltage lines in the power system, the tension of the high-voltage lines is a very important task, which directly affects the use of the entire power line. Short circuit due to collision; if the power line is too tight, it is easy to break the line or pull the pole

Usually, manual tensioning is used for the tensioning of high-voltage lines, but the tensioning effect is not ideal, the work efficiency is low, and the labor intensity is relatively high.

In the past, most of the tools used to achieve the function of tightening the wire were to clamp the cable with a wire clamp and then use the lifting device to pull the cable to achieve wire tightening. However, the use of tools in line construction and accident handling also has the following problems: the wire tightening tool is heavy, It is inconvenient to move; many people are employed, and the operation is complicated; piling is used to fix the line tightening equipment, occupying land and damaging the crops of the masses, prolonging the power outage time for no reason

Especially for lines with relatively large sag and long distances, because the cables are too long and the tool stroke is limited, it is impossible to perform a large tension. Therefore, it is often necessary to carry two sets of wire tensioners to ascend the height during actual operations, which is even more aggravated. Operator's labor intensity

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