E - Fixed Constructions – 01 – B
Patent
E - Fixed Constructions
01
B
104/14
E01B 29/06 (2006.01) E01B 27/02 (2006.01) E01B 27/04 (2006.01) E01B 29/10 (2006.01)
Patent
CA 1157318
ABSTRACT OF THE DISCLOSURE A method and apparatus for removing defective railroad ties from the right-of-way in one piece and without dis- turbing the elevation, cross-level and line, of a track system. The method is carried out by first removing the tie plates from an individual tie to be replaced; forming a trench underneath the tie by the use of laterally directed scarifiers while retaining the tie in its normal position and restraining the tie against movement longi- tudinally of the track system so as to displace ballast material from underneath the tie to the next adjacent crib; applying a downward force to the top of the tie to be removed and withdrawing the tie from one or the other end. The apparatus for performing the method includes a plurality of laterally spaced-apart scarifier means adapted to be rotated about a common axis that is parallel to the longitudinal axis of a tie to be removed; a restraining means to retain the tie in its normal position while the scarifiers are rotated down and through the ballast under- neath the tie to thereby "pump" the ballast material from a chamber, the top of which is defined by the lower surface of the tie; a means for providing a downwardly directed force on the top of the tie to displace it downwardly underneath the rails of the track system; and a means for withdrawing the tie from either end. The scarifier means are configured to distribute a force in adjacent ballast material which contributes to the "pumping" action as the scarifier is inserted into the chamber formed beneath the lower surface of the tie to be removed. The scarifier means may also be configured to pump ballast on their withdrawal from the chamber underneath the tie.
344272
Kirby Eades Gale Baker
Loram Maintenance Of Way Inc.
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