Method of operating a road roller equipped with an operating lev

Details Method of operating a road roller equipped with an operating lev Method of operating a road roller equipped with an operating lev

1995-07-18

1997-08-19

Lisehora, James

Road structure, process, or apparatus

Process

404 75, 404122, 477111, B60K 2000, E01C 1922

Patent

active

056580886

ABSTRACT:
A method for operating a hydraulically driven road roller, primarily for compacting bitumen, with which repeated passes are made over a bitumen coating and in which the roller's speed, acceleration, deceleration and direction of travel (forward or reverse) are selected with an operating lever 1 which, via a control panel 8, electrically acts on hydraulic valves (10, 11, 13) controlling a servo 14 which acts on a hydraulic pump 15 driving the propulsion motors of the road roller. The operating lever is moveable from a neutral position to full lever deflection and equipped with a forward/reverse switch 2 for selecting the roller driving direction. The speed of the road roller decreases at a programmed deceleration, when this switch is actuated, until the roller stops, followed by acceleration at a programmed rate to a programmed driving speed in the opposite direction. The roller is brought to standstill at the maximum permissible deceleration when the lever is pulled back.

REFERENCES:
patent: 3412659 (1968-11-01), Harbke et al.
patent: 4187036 (1980-02-01), Haker et al.
patent: 4310261 (1982-01-01), Opderbeck
patent: 4419909 (1983-12-01), Opperud et al.
patent: 4680983 (1987-07-01), Brown
patent: 4773217 (1988-09-01), Angot et al.
patent: 5450768 (1995-09-01), Bulgrien et al.

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