Method and machine for working an area of ground, in particular

Details Method and machine for working an area of ground, in particular Method and machine for working an area of ground, in particular

1989-08-14

1991-04-23

Kisliuk, Bruce M.

Road structure, process, or apparatus

Process

404 84, 404105, 404118, 172 45, 37DIG20, E01C 1922

Patent

active

050095447

ABSTRACT:
A tool (23) for extruding a paved surface (39) is located behind tracks (2) and may thus have a width which is greater than the overall width perpendicular to the tracks. The tool is carried by a bridge frame (27) articulated on the frame (1), carried by the tracks, according to a transverse axis (X--X). At the rear, the bridge frame (27) rests on the freshly paved surface (39) via air cushions (32). A hauled rule (58) emits a ray (63) parallel to the surface (39) as detected by the rule. A detector (64) carried by the tool (23) and receiving the ray (63) detects the position in respect of height of the bed (23) relative to the surface (39). Jacks (38) correct the position in respect of height of the tool as a function of this detection. A ballast (42) is displaced automatically along the bridge frame (27) in order to adjust the pressure in the air cushions ( 32).

REFERENCES:
patent: 2393954 (1946-02-01), Baker
patent: 2491275 (1949-12-01), Millikin
patent: 3052997 (1952-09-01), Holland
patent: 3210710 (1965-10-01), Amos
patent: 3564986 (1971-02-01), Burgin
patent: 3613530 (1971-10-01), Hess
patent: 3618484 (1971-11-01), Long
patent: 4045893 (1977-09-01), Feinzilber et al.
patent: 4073592 (1978-02-01), Godberson et al.
patent: 4678364 (1987-07-01), Charonnat et al.
"Les Machines A Coffrage Glissant Et L'Uni Des Chaussees En Beton", Bulletin De Liaison Du Laboratoire Des Ponts Et Chasussees, No. 95, May-Jun. 1978, Ref. 2231, by M. Ray et al., pp. 99-132.

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