Tension balancer for overhead line

Abstract

The present invention provides a tensioning balancer for overhead wire, which can absorb the expansion of a overhead wire and hold the tensioning of the overhead wire to a certainty, can be realized only by maintaining timely, has good permanent stability, and can avoid generating tension force from unbalance caused by external causes. The tensioning balancer for overhead wire comprises: a tension force transformation pulley (2) forming with a first cable leading trough (6) and a second cable leading trough (7) with changeable diameter, a first cable (10) coiled in the first cable leading trough (6), a second cable (11) coiled in the second cable leading trough (7), and a coil spring (4) applying force on a axial displacement component to the opposite side of one end of the second cable (11), expansion amount of the overhead wire is absorbed by the expending action of the coil spring (4) with the rotation of the tension force transformation pulley (2).

Description

technical field [0001] The present invention relates to a tension balancer for overhead wires for maintaining constant tension of overhead wires erected in the air. Background technique [0002] In overhead lines, especially tram lines (hanger overhead lines, auxiliary hanger overhead lines, tramlines), stretching and creep due to temperature changes, elastic elongation due to tramline wear, and long-term aging changes The resulting tilt of the support, etc., will affect the tension of the relaxation. Therefore, it is necessary to keep the tension of the trolley wire constant, and it is required to automatically adjust the tension and make it maintenance-free. [0003] Therefore, conventionally, tension balancers for trolley wires have been proposed in various systems, such as a pulley type, a spring type, a gas type, and a hydraulic type. Among them, in the pulley type, cables are guided by pulleys via insulating porcelain bottles connected to overhead wires, and heavy ob...

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned pulley-type tension balancer for overhead use, damage to the bearing of the rotating shaft portion and performance failure due to dust generation may occur, and periodic maintenance to detect cable disconnection in advance is indispensable.

Furthermore, there are external factors (snowfall, snow accumulation, icing), for example, the balance of tension is damaged, and there are problems such as the flow of overhead wires in the steep gradient section.

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