Mode of construction of lifting mechanisms for a jack-up platfor

Details Mode of construction of lifting mechanisms for a jack-up platfor Mode of construction of lifting mechanisms for a jack-up platfor

1986-05-06

1987-07-07

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Rack and pinion

Geared

74410, 74422, 74606R, B66F 712

Patent

active

046781650

ABSTRACT:
A lifting mechanism (4) operating by means of cogwheels (6) climbing along a toothed rack (3) on the leg (2) of a jack-up platform (1). Lifting mechanisms (4) required for different applications of use, having different capacities of lifting are assembled by using a limited number of different frame modules (5'), climbing pinions (6) and gearings. The torque arms (14) of two gearboxes (7) placed one after the other may be interconnected so that the torques produced by the climbing pinions (6) on the gearboxes compensate for each other.

REFERENCES:
patent: 2924077 (1960-02-01), LeTorneau
patent: 3167975 (1965-02-01), Durand
patent: 4160538 (1979-07-01), Armstrong

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