Tie plate handling means for rail changing machine
AssigneeCanron, Inc.
InventorsRaymond R. Lund, Hung C. Ho
Life of this patent
Estimating the term…
Abstract
In a rail changing machine which removes old rails, prepares the surfaces of the old ties and lays down new rail, a tie plate pick-up device is arranged to pick up the old tie plates and convey them selectively to a trailing car or to a tie plate positioning and dropping device where they are re-laid on the prepared ties. In the event that the old tie plates are not recycled new tie plates are conveyed to the tie plate dropping device. Permanent magnetic pick-up wheels are used and an electromagnetic tie plate holder is used at the dropping station. Problems of lateral alignment at both the pick-up and drop stations and tie plate orientation and longitudinal alignment with the ties at the drop station are overcome using novel mechanisms.
Claims18
A rail changing machine having means for removing rails from a track, means for lifting the tie plates from the old ties, means for preparing the old ties, means for relaying tie plates or the prepared ties and means for laying new rails in the relaid tie plates, wherein the means for lifting the tie plates comprises at each rail location a first magnetic wheel rotatably mounted on a lateral axis and also mounted for generally vertical movement, means for moving the first magnetic wheel vertically downward for engagement by its periphery with a tie plate on a tie and vertically upwards for raising the subsequently adhered tie plate off the tie, means for rotating stepwise the first magnetic wheel in the raised position to index a vacant space on the wheel periphery to a downward facing location of the wheel, means for removing from the magnetic wheel tie plates adhered thereto, and means for conveying the removed tie plates to a desired location.
A rail changing machine having means for removing rails from a track, means for lifting the tie plates from the old ties, means for preparing the old ties, means for relaying tie plates on the prepared ties and means for laying new rails in the relaid tie plates, wherein the means for relaying tie plates on the prepared ties comprises an electromagnetic holder adapted to receive the tie plates from a conveyor in the correct orientation, the electromagnetic holder being movable from a raised position for reception of a tie plate to a lowered position for dropping the tie plate on a tie, and means for measuring the location of successive ties, means for measuring the width of successive ties and means for de-energising the electromagnetic holder at a time depending upon the particular tie location measured and the particular tie width measured whereby said holder is properly positioned over the tie.
A rail changing machine having means for removing rails from a track, means for lifting the tie plates from the old ties, means for preparing the old ties, means for relaying the tie plates on the prepared ties, and means for laying new rails in the relaid tie plates, wherein the means for relaying the tie plates on the prepared ties comprises a holder adapted to receive the tie plates from a conveyor in the correction orientation, the holder being movable from a raised position for reception of a tie plate to a lowered position for dropping the tie plate on a tie, and means for measuring the location of successive ties, means for measuring the width of successive ties and means for causing said holder to drop said tie plate at a time depending upon the particular tie location measured and the particular tie width measured whereby said holder is properly positioned over the tie.
Dependencies are inferred from the claim text.