Turning device especially for driving a turbine shaft

Machine element or mechanism – Engine starters – Radial meshing

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Details

74661, 74850, 74380, 743375, F16H 5710, F16H 3500

Patent

active

042677386

ABSTRACT:
A turning device preferably for turbine-machines is disclosed having a turning-gear pinion arranged on a cam so that the axes of rotation of the cam, the turning-gear pinion and the shaft to be turned are aligned in a central line. To turn the shaft, the turning-gear pinion is caused to engage a toothed ring of the shaft by a hydraulic piston acting on the cam. The turning-gear piston is then held in the engaged position by a spring-loaded pressure cylinder which engages a catch of the cam. When a certain speed has been reached, or when the shaft is turning backward, the spring loaded pressure cylinder becomes disengaged from the catch and the turning-gear pinion swings out sideways.

REFERENCES:
patent: 2245175 (1941-06-01), Bany
patent: 2910894 (1959-11-01), Kenney
patent: 3919894 (1975-11-01), Keeter et al.
patent: 3927575 (1975-12-01), Durand

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