US 11,668,055 B2
Rail milling vehicle
Robert R. Schrunk, Fairmont, MN (US)
Filed by Harsco Technologies LLC, Fairmont, MN (US)
Filed on Aug. 26, 2019, as Appl. No. 16/550,787.
Claims priority of provisional application 62/723,387, filed on Aug. 27, 2018.
Prior Publication US 2020/0063377 A1, Feb. 27, 2020
Int. Cl. B23C 3/00 (2006.01); B23B 5/32 (2006.01); E01B 31/13 (2006.01); B61D 15/00 (2006.01); B23C 3/04 (2006.01); B23B 5/28 (2006.01)
CPC E01B 31/13 (2013.01) [B23B 5/28 (2013.01); B23B 5/32 (2013.01); B23C 3/00 (2013.01); B23C 3/002 (2013.01); B23C 3/04 (2013.01); B61D 15/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rail vehicle, comprising:
a floating rail milling assembly configured to be coupled to a chassis, the floating rail milling assembly floating in relation to a rail, via a pin configured to move both vertically and laterally within a slot defined in a front frame member, the floating rail milling assembly including:
a plurality of milling workheads, each milling workhead of the plurality of milling workheads forming a portion of the floating rail milling assembly, each milling workhead including:
a spindle;
a cutter depending downwardly from the spindle, the spindle and cutter configured to be driven by a spindle motor; and
a cylinder rod disposed between the spindle motor and the spindle and configured to move the cutter towards the rail during operation;
wherein:
each cutter of the plurality of milling workheads is independently moveable, via the cylinder rod, towards the rail relative to other cutters of the plurality of milling workheads; and
at least one milling workhead of the plurality of milling workheads is fixed at an angular position relative to the rail.