Sealing and lubricating system for a dredge

Details Sealing and lubricating system for a dredge Sealing and lubricating system for a dredge

1981-09-03

1983-08-02

Crowder, Clifford D.

Excavating

Peat excavators

277 3, 60456, E02F 388

Patent

active

043958338

ABSTRACT:
The dredge is of the type having a bucket wheel, driven by a hydraulic motor through a gearbox, on the front of a bucket wheel carrier hinged at its rear to the dredge hull, and lowered to or raised from working depth by a cable engaged with a lifting sheave block near the front of the carrier, the dredge being slewed by cables from anchors to both sides of the dredge and engaged with slewing sheave blocks near the front of the bucket wheel carrier. Hydraulic fluid is bled from the motor to the gearbox, and then by a bleed line connected to the bearings of the sheaves of the lifting sheave block and the slewing sheave blocks. A check valve maintains a predetermined pressure in the bleed line to apply internal pressure to the seals of the gearbox, the lifting sheave block and the slewing sheave blocks.

REFERENCES:
patent: 2232620 (1941-02-01), Meeks
patent: 2482249 (1949-09-01), Court
patent: 3476498 (1969-11-01), Von Bolhar
patent: 4316336 (1982-02-01), Salemink
patent: 4321793 (1982-03-01), Uranaka et al.

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