Back to results
US 5,474,397 AGranted
Drum access mechanism
AssigneeIngersoll-Rand Company
InventorScott F. Lyons
Life of this patent
Estimating the term…
Abstract
A mobile milling machine for milling a road surface includes a floating mold board for directing milled material onto a loading device positioned behind the machine. The mold board has fixed thereto a holder for the loading device. The loading device is pivotable side-to-side about a vertical axis, with respect to the holder. The mold board, the holder and the loading device are vertically movable a limited distance between a top and bottom stop position, and pivotable about a horizontal axis at the top stop position, to expose the milling roller for repairs. When the machine is in operation, the mold board, the holder and the loading device are hydraulically supported to permit the mold board to float along the milled surface in a grazing contact.
Claims13
A mobile milling machine for milling a road surface comprising:
- (a) a chassis having a front portion and a rear portion;
- (b) a milling roller rotatably mounted transversely on said chassis within a roller housing;
- (c) a mold board mounted transversely on said chassis, rearwardly adjacent to said milling roller, in a substantially vertical position, for directing milled material therethrough;
- (d) a loading device positioned rearward of said moldboard;
- (e) a holder for said loading device fixed to said mold board;
- (f) said mold board and said holder being vertically movable a limited distance between a top stop position and a bottom stop position and pivotable at said mold board upper edge about a substantially horizontal axis at said top stop position;
- (g) means coupling said holder to said loading device, for pivoting said loading device with respect to said holder about a vertical axis;
- and
- (h) actuator means for simultaneously raising said holder, said mold board and said loading device from said bottom stop position to said top stop position, and for thereafter simultaneously pivoting said holder, said mold board and said loading device about said horizontal axis, whereby said roller housing is opened to permit access to said milling roller.
6 more elements
A mobile milling machine for milling a road surface comprising:
- (a) a chassis having a front portion and a rear portion;
- (b) a milling roller rotatably mounted transversely on said chassis within a roller housing;
- (c) a mold board mounted transversely on said chassis, in a substantially vertical position, adjacent to said milling roller, said mold board comprising:
- (i) a lower edge for contacting a road surface;
- (ii) an upper edge;
- and
- (iii) an opening therethrough, said opening positioned between said upper and lower edges, for directing milled material therethrough;
- (d) a holder, for a loading device, fixed to said mold board;
- (e) said mold board and said holder being vertically movable a limited distance between a top stop position and a bottom stop position and pivotable at said mold board upper edge about a substantially horizontal axis at said top stop position;
- (f) means coupling said holder to said loading device, for pivoting said loading device with respect to said holder about a vertical axis;
- and
- (g) actuator means for simultaneously raising said holder, said mold board and said loading device from said bottom stop position to said top stop position, and for thereafter simultaneously pivoting said holder, said mold board and said loading device about said horizontal axis, whereby said roller housing is opened to permit access to said milling roller.
9 more elements
A mobile milling machine for milling a road surface comprising:
- (a) a chassis having a front portion and a rear portion;
- (b) a milling roller rotatably mounted transversely on said chassis within a roller housing;
- (c) a mold board mounted transversely on said chassis, in a substantially vertical position, adjacent to said milling roller, said mold board comprising:
- (i) a lower edge for contacting a road surface;
- (ii) an upper edge;
- and
- (iii) an opening therethrough, said opening positioned between said upper and lower edges, for directing milled material therethrough;
- (d) a holder, for a loading device, fixed to said mold board;
- (e) said mold board and said holder being vertically movable a limited distance between a top stop position and a bottom stop position and pivotable at said mold board upper edge about a substantially horizontal axis at said top stop position;
- (f) means coupling said holder to said loading device, for pivoting said loading device with respect to said holder about a vertical axis;
- (g) actuator means for simultaneously raising said holder, said mold board and said loading device from said bottom stop position to said top stop position, and for thereafter simultaneously pivoting said holder, said mold board and said loading device about said horizontal axis, whereby said roller housing is opened to permit access to said milling roller;
- (h) when said mold board is in the operating condition, the combined weight of said holder, said mold board and said loading device cause said mold board to move vertically downward to contact the milled road surface;
- (i) when said mold board is in the operating condition, said actuator means supplies a limited upward support force to said mold board, said holder and said loading device to permit said mold board to float along the milled road surface in a grazing contact therewith;
- and
- (j) second actuator means for pivoting said loading device with respect to said holder about said vertical axis.
12 more elements
Dependencies are inferred from the claim text.