Force limiting gear reducer for lifting pinion of self-elevating

Details Force limiting gear reducer for lifting pinion of self-elevating Force limiting gear reducer for lifting pinion of self-elevating

1984-08-22

1986-03-11

Staab, Lawrence J.

Machine element or mechanism

Gearing

With brake means for gearing

74422, 74411, 405198, 254 40, F16H 5710, F16H 5700, F16H 104, E02B 1708

Patent

active

045746508

ABSTRACT:
A force limiting gear reducer for a lifting pinion of a self-elevating platform, comprising a gear reducer divided in two parts, a first of said parts being directly connected to a pinion shaft and pinion support and a second of said parts comprising a prime reducer with brake and motor connected to an input shaft of the first reducer, a reaction member on the prime reducer in the form of a geared wheel meshing with a pair of guided racks on opposite sides thereof, which are axially connected each to at least one hydraulic cylinder, and means to control the oil pressure in the hydraulic cylinders, said geared wheel being both internally and externally toothed, said external teeth being in mesh with said pair of racks, and said internal teeth meshing with a plurality of planet gears all of which planet gears are in mesh with a sun gear on said input shaft.

REFERENCES:
patent: 236797 (1881-01-01), Gast
patent: 1536344 (1925-05-01), Hulse
patent: 4395160 (1983-07-01), de Jong
patent: 4453858 (1984-06-01), Guiader
patent: 4480491 (1984-11-01), Durand et al.
patent: 4497591 (1985-02-01), Gillis
Mechanical Movements, #127, Henry T. Brown, p. 35, 1893.

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