Mobile tie gang apparatus and tie exchange method

Details Mobile tie gang apparatus and tie exchange method Mobile tie gang apparatus and tie exchange method

1988-03-08

1989-09-05

Reeves, Robert B.

Railways

Track layers

Track raising car

104 9, E01B 2910

Patent

active

048628069

ABSTRACT:
A mobile apparatus for sequentially exchanging selected consecutive groups of old ties in an existing railroad track for groups of new ties while retaining groups of old ties therebetween to support the mobile apparatus on the track, comprises at least one bridge-like work vehicle having a frame defining an upwardly recessed portion between respective ends thereof, swivel trucks supporting the work vehicle frame ends on the railroad track, and a drive for the continuous advancement of the work vehicle on the railroad track in an operating direction. A succession of different individual devices are longitudinally displaceably mounted in the recessed frame portion of a respective work vehicle and are operative to effectuate different sequential operations for exchanging the selected old ties for the new ties, the tie exchanging devices including at least one tie pulling and inserting device. A respective drive displaces each individual tie exchanging device with respect to the respective work vehicle frame along a displacement path extending in the direction of the longitudinal extension of the work vehicle frame. A vertical tie conveyor and tie transporting device is associated with each tie pulling and inserting device, and an auxiliary carrier frame is mounted in the recessed frame portion and is connected thereto, each tie pulling and inserting device and the associated vertical tie conveyor and tie transporting device being supported on the auxiliary frame. A continuous guide track extends atop the work vehicle frame, and a power-driven crane is movable along the guide track for transporting the ties.

REFERENCES:
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patent: 4635557 (1987-01-01), Mohr et al.
"Progressive Railroading", Feb, 78, p. 68; Mar. 84, p. 93/4; Feb. 86, p. 45/6.
"Railway Track Structures", Dec. 68, pp. 14-16; Jun. 78, pp. 28, 29 & 31; Nov. 83, pp. 22-24; Sep. 85, pp. 49, 54, 58, 61, 66, 105 & 106.

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