Anchor section joint of overhead rigid contact net for quick rail transit

Abstract

The invention provides an anchor section joint of an overhead rigid contact net for quick rail transit, which comprises busbar terminals, a contact line, an electric connection assembly and an insulator; the two busbar terminals are opposite in orientation, arranged in parallel and partially overlapped; the contact line is fixed to the lower end face of the busbar terminals; the busbar terminals are connected through the electric connection assembly, the busbar terminals are suspended at the lower end of the insulator through lengthened busbar positioning wire clamps, and fixed-distance sliding blocks are arranged between the contact surfaces of the busbar terminals and the lengthened busbar positioning wire clamps and are fixed on the busbar terminals. Each suspension point of the busbar terminals is provided with a fixed-distance sliding block, and the fixed-distance sliding blocks can freely slide in the lengthened busbar positioning wire clamps along with the busbar terminals, so it is guaranteed that when busbars expand with heat and contract with cold, the actual span within the mechanical segmentation range is not changed, and the uniformity of rigid suspension static elasticity when a pantograph is subjected to mechanical segmentation is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to an overhead rigid catenary anchor segment joint for rapid rail transit. Background technique [0002] The existing overhead catenary is divided into flexible catenary and rigid catenary. The rigid suspension system is an urban rail transit power supply method in which the contact wire is clamped in the busbar, and the locomotive takes the current from the top of the track through the pantograph. Rigid suspension system has been widely used in my country's urban rail transit due to its simple structure, convenient installation and small maintenance workload. At the same time, with the expansion of city scale, for some suburban lines, it is necessary to increase the running speed of vehicles and repair them in a maintenance-free state. This puts forward higher requirements for the safety and reliability of the rigid suspension system. [0003] The anchor section...

AI Technical Summary

Problems solved by technology

It can be seen from the figure that there is a certain distance between the raised position of the terminal of the busbar within the range of the anchor joint and the suspension point. The main purpose is to meet the thermal expansion and contraction of the busbar itself; the joint needs to be installed with electrical connections, and the overlapping part should not be too short; the joint position The four suspension points are required to be installed at equal heights, and the pantograph may touch multiple times when passing by; due to the fixed position of the suspension points, the cantilever length of the busbar will change significantly in the environment of large temperature difference in the long anchor section, affecting The uniformity of pantograph contact force when the vehicle passes through the anchor joint

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