Belt transmission for very small size shovel car

Details Belt transmission for very small size shovel car Belt transmission for very small size shovel car

1990-07-23

1991-04-16

Bui, Thuy M.

Endless belt power transmission systems or components

Plural belts or plural output loads

37103, 474 87, F16H 700, F16H 708

Patent

active

050078828

ABSTRACT:
A belt transmission for a very small size shovel car which improves the starting performance of an engine for the shovel car to permit employment as such engine of a small size engine having a low output power. The belt transmission comprises a first pulley mounted on an output shaft of the engine, second and third pulleys mounted commonly on an input shaft of a transmission case of the shovel car, a first belt extending between and around the first and second pulleys, a belt tension clutch movable to and from an operative position in which it engages with the first belt to cause the first belt to transmit power from the first pulley to the second pulley, a fourth pulley mounted on an input shaft of a hydraulic pump of the shovel car, and a second belt extending between and around the third and fourth pulleys. When the belt tension clutch is in the operative position, power of the engine is transmitted to the second pulley to operate both of the transmission case and the hydraulic pump, but when the belt tension clutch is not in the operative position, no power is transmitted to the second pulley and neither of the transmission case and the hydraulic pump is operated.

REFERENCES:
patent: 3871461 (1975-03-01), Ehrlich
patent: 3924483 (1975-12-01), Walker et al.
patent: 4077140 (1978-03-01), Branconi
patent: 4095579 (1978-06-01), Iwasa et al.
patent: 4679336 (1987-07-01), Brocklebank et al.

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