Modular point detector for railroad track switch

B - Operations – Transporting – 61 – L

Patent

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Details

B61L 5/00 (2006.01) B61L 5/10 (2006.01)

Patent

CA 2469145

A modular sensor apparatus (48,52) for detecting the location of a movable track point includes a primary sensor (132) and a secondary sensor (136) disposed on a sensor mount (128) that is movable with respect to a frame (96) that is mounted on a switch machine. The secondary sensor (136) is offset from the primary sensor (132) in order to permit the secondary sensor (136) to detect the need for imminent readjustment of the track point prior to the time at which the track point becomes maladjusted and in need of immediate readjustment. The sensor mount (128) is threadably adjustable with respect to the frame (96), whereby once the primary sensor (132) has detected the position of the movable track point when it is disposed against a fixed stock rail, the sensor mount (128) can be moved a fixed threshold distance by rotating a thumbwheel (160) a fixed number of turns.

Appareil à capteurs modulaires destiné à détecter l'emplacement d'un point de rail mobile, qui comprend un capteur primaire et un capteur secondaire, disposés sur un support de capteurs capable de se déplacer par rapport à un cadre qui est monté sur un appareil de commande d'aiguillage. Le capteur secondaire est décalé par rapport au capteur primaire de manière à pouvoir détecter le besoin d'un réajustement imminent d'un point de poursuite au moment où le point de poursuite se trouve mal ajusté et qu'il nécessite un réajustement immédiat. Le support de capteurs peut ainsi être ajusté par rapport au cadre; de ce fait, dès que le premier capteur détecte la position du point de rail mobile dans laquelle il est disposé contre une contre-aiguille fixe, le support peut être déplacé sur une distance de seuil fixe par la rotation d'une molette sur un nombre de tours déterminé.

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