US 2010/0133055 A1Published application

Section insulator for a rigid catenary

AssigneeMetro De Madrid, S.A.

InventorsManuel Melis Maynar, Ildefonso De Matias Jimenez, Francisco Javier Gonzalez Fernandez, Miguel Alejandro Moya Loperz-Duque, Rogelio Sanchez Pardias, Jorge Francisco Blanquer Jaraiz, Felipe Carmona Pinto, Carlos Vera Alvarez, Berta Suarez Esteban, Jennifer Paulin

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Abstract

Section insulator for rigid catenary which has a dual functionality, since it can exercise the functions both of conventional section insulator and of neutral section insulator, configured so that it maintains a mechanical continuity which allows the smooth passage of the pantograph, minimizing the requirement for adjustment and maintenance. The insulator basically comprises a pair of conductor rail segments (2) between which is disposed a single central shoe (1) obliquely disposed with respect to the direction of the catenary, a pair of spark wires (9) wherein the electric field is broken and a series of strips (8) disposed on said central shoe (1) which, together with a bridging cable which extends from them to the conductor rail segment (2), enables bridging the wire conductor of the insulator (3) when one want to maintain the power supply to the pantograph.

Claims4

Dependent claims

A section insulator with neutral section for rigid catenary which enables the interruption of the electrical continuity between two adjacent sections of the catenary on the passage of the pantograph that comprises

two conductor rail segments which can be coupled to the conductor rail of the catenary by connection flanges, consisting of a profile whose lower end configures a housing;
a central shoe disposed between said segments;
two spark wires wherein the electric field is broken connected to the central shoe by a spark height adjustment system which enables their height to be adjusted;
and
a bridging means which allows the central shoe to be bridged, thus adjusting the operation of the insulator as section insulator or as neutral section insulator, characterised in that the central shoe comprises a horizontal base which rests on the upper part of the two segments giving continuation to the catenary and a vertical core oblique to the direction of the catenary, said base incorporating a series of clamps for the fixing of an insulator wire;
and in that the two spark wires extend from the housing of the conductor rail segments wherein they are inserted to the base of the central shoe, wherein the distance between said two spark wires is greater than the width of the pantograph table to allow the central shoe to behave as a neutral section during the passage of said pantograph.

3 more elements

Dependencies are inferred from the claim text.