System for controlling a power shovel

Details System for controlling a power shovel System for controlling a power shovel

1976-03-12

1977-11-22

Spar, Robert J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180101, 214 1CM, 214762, E02F 332

Patent

active

040591964

ABSTRACT:
A system for controlling a power shovel for use in civil engineering works is described. The control system comprises a manual control lever consisting of a control boom, a control arm and a control bucket which are miniature of a boom, an arm and a bucket of the power shovel, and a control circuit. The control circuit includes means for detecting the displacement of the elements of the control lever, means for detecting the displacement of the elements of the power shovel, means for comparing the displacement of the control lever with one of the power shovel. The differential signal from the circuit is applied to servo-mechanisms for following up the power shovel in accordance with the movement of the control lever. The power shovel can be controlled equally with the manual control lever.

REFERENCES:
patent: 3630389 (1971-12-01), Schmidt
patent: 3637092 (1972-01-01), George et al.
patent: 3807343 (1974-04-01), Peebles
patent: 3840132 (1974-10-01), Howells, Jr. et al.
patent: 3878652 (1975-04-01), Mosher

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