Torsionally tuned spring coupling and drive mechanism including

Details Torsionally tuned spring coupling and drive mechanism including Torsionally tuned spring coupling and drive mechanism including

1989-08-07

1991-09-03

Stodola, Daniel P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Torque transmitted via flexible element

Coil spring

1921062, 464 64, F16D 352, F16D 366

Patent

active

050450271

ABSTRACT:
Large earthmoving vehicles require complex mechanisms for mechanically driving the auxiliary power units. The subject drive mechanism includes an elevating transfer gear train at the rear frame portion of the vehicle that drives a rear auxiliary power unit via an upper transfer gear, and that drives a front auxiliary power unit on the front frame portion of the vehicle through a relatively long drive shaft system extending from the upper transfer gear. A torsionally tuned spring coupling having a plurality of compression spring sets arranged in at least two circular arrays is incorporated between the engine and an input gear of the transfer gear train for providing two stiffness rates and effectively isolating the drive mechanism from the torsional excitation pulses of the engine and the effects of gear shifting of an associated transmission for powerably driving the vehicle.

REFERENCES:
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Caterpillar Parts Booklet, 3508 Vehicular Engine Cover, and pp. 28, 32, and 33 (circa Oct., 1985).

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