Dump truck with safety circuit

Details Dump truck with safety circuit Dump truck with safety circuit

1980-04-25

1981-12-22

Hix, L. T.

Electrical transmission or interconnection systems

Vehicle mounted systems

307328, 180272, B60K 2800

Patent

active

043073000

ABSTRACT:
An electrical circuit for driving an electrically driven vehicle such as a dump truck is capable of preventing occurrence of accidents caused by an erroneous operation and thereby increasing safety by providing an arrangement such that the vehicle cannot start unless all necessary operations have been completed before starting. For this purpose, a power source of a control box controlling an exciting current for a generator is turned on to generate the exciting current only when all necessary operations have been completed. This is achieved by connecting a plurality of switches corresponding to various operations in series to a power source relay and thereby causing the power source relay to be actuated upon closing of all of these switches. The circuit also enables the motors to be utilized as generators to provide dynamic braking for the truck.

REFERENCES:
patent: 2084371 (1937-06-01), Aikman
patent: 2393618 (1946-01-01), Edwards et al.
patent: 2419178 (1947-04-01), Strong
patent: 3348623 (1967-10-01), Potter
patent: 3521723 (1970-07-01), Snodgras
patent: 3914735 (1975-10-01), Guillaume
patent: 4051915 (1977-10-01), Behrens
patent: 4119861 (1978-10-01), Gocho

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