A Design of Crossover Protection Device for Corroded Overhead Ground Wire Tension Replacement

Abstract

In order to improve the safety of the tension replacement of the corroded overhead ground wire in the spanning gear, avoid the failure of the sealing wire rope and make the spanning facility damaged after the broken wire of the corroded overhead ground wire. A crossover protection device is designed by analyzing the reasons for the failure of the sealing rope in this paper. Before the tension replacement, install multiple protective devices while arranging the sealing rope above the facility to be crossed. The sliding system designed by the protective device does not affect the traction and sliding during the replacement of the corroded overhead ground wire, and can break the corroded overhead ground wire. Afterwards, it carries its breaking impact load, and transmits it through the sliding system, so as to prevent the sealing rope from being directly rubbed and cut and broken and fail, and ensure the safety of the facilities being crossed. The protective device has been verified by the actual engineering on site and can meet the needs of on-site use. The design of the protection device provides a feasible solution for the tension replacement of the corroded overhead ground wire for the broken wire protection, and has important reference significance for the future similar operations.