Mode of construction of lifting mechanisms for a jack-up platform and lifting mechanism for a jack-up platform
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United States of America Patent
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Jul 7, 1987
Grant Date -
N/A
app pub date -
May 6, 1986
filing date -
May 27, 1985
priority date (Note) -
Expired
status (Latency Note)
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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.
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