Power plants – Pressure fluid source and motor – Having assembly or repair structure
Patent
1976-01-12
1976-09-14
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Having assembly or repair structure
60DIG10, 60484, 91411R, F15B 2100
Patent
active
039799093
ABSTRACT:
A rotary hydraulic actuator adapted to be mounted as on the stationary kingpin fixed on the deck of a self-unloading bulk cargo ship for slewing of a conveyor boom having its foot pivotally connected to oppositely extending horizontal trunnions on the actuator, said actuator being characterized by its unitized construction in which the gear housing is journalled on a gear keyed on said kingpin and which has pairs of parallel cylinders extending in opposite directions from the gear housing for actuating gear racks which mesh with said gear. Said actuator is further characterized in that extending longitudinally in opposite directions from the gear housing between the respective pairs of cylinders is a hydraulic oil tank and a weatherproof power pack assembly (or hydraulic actuating system) operatively connected with the tank and including a hydraulic pump and drive motor therefor and valves to control flow of fluid under pressure to selected cylinders for rotation of said actuator in desired boom-slewing direction.
For a large size actuator of the character indicated, the complete assembly is of such great length and width as not to be transportable by truck or rail from the manufacturer's plant to the shipyard or other location and hence, in the unitized construction herein only the trunnion mountings are detached for shipping purposes without disturbing the hydraulic system components and piping whereby the remaining unitized structure, while of relatively great length, is then sufficiently narrow so as to be conveniently shippable to the shipyard or other location by rail or truck whereat the trunnion mountings may be bolted in place and seal-welded to opposite sides of the gear housing without disturbing the hydraulic system.
REFERENCES:
patent: 3279172 (1966-10-01), Kudo et al.
patent: 3299635 (1967-01-01), Forster et al.
patent: 3651635 (1972-03-01), Clay
Heese William Elisa
Meyer Kenneth Herbert
Geoghegan Edgar W.
HydraPower Inc.
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