Bearing arrangement for heavy duty marine transmission

Details Bearing arrangement for heavy duty marine transmission Bearing arrangement for heavy duty marine transmission

1993-10-29

1995-02-14

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

74333, F16H 314

Patent

active

053884736

ABSTRACT:
A bearing arrangement for the drive pinion of a marine transmission or the like reduces deflections of the shaft on which the pinion is mounted. The bearing arrangement mounts the pinion in part on the shaft and in part directly on the transmission housing, thus reducing loads imposed on the shaft by the pinion. The bushing which typically supports the pinion on the drive shaft is eliminated in favor of a first bearing supporting the input end of the pinion in the housing and a second bearing supporting the output end of the pinion on the shaft. Third and fourth bearings support the output and input ends of the shaft in the housing and on the pinion, respectively. Preferably, the first, second, and third bearings comprise single taper roller bearings which permit the points at which the effective loads are imposed on the shaft to be shifted and the running clearances of which are adjusted by a single shim pack. Deflections can be reduced still further by positioning the clutch return spring proximate an outer surface of the clutch.

REFERENCES:
patent: 3570319 (1971-03-01), Arnold
patent: 3613469 (1971-10-01), McRoberts et al.
patent: 3803934 (1974-04-01), Yokel
patent: 3823801 (1974-07-01), Arnold
patent: 3946841 (1976-03-01), LaFollette et al.
patent: 4451238 (1984-05-01), Arnold
patent: 4676356 (1987-06-01), Beccaris et al.
patent: 4802564 (1989-02-01), Stodt
patent: 5151059 (1992-09-01), Higby
patent: 5199317 (1993-04-01), Moore et al.
"Standard Handbook of Machine Design", Shigley and Mischke, pp. 27.6-27.13, McGraw-Hill, 1986.
Twin Disc Bulletin 319-S-14C, Model MG-514C Marine Transmission, 1989.
Twin Disc Bulletin 319-W-16, Models MG-516 & MG-5161 Marine Transmissions, 1991.

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