Scraping device has dragline for the propulsion of materials in bulk

摘要

P building and public works. / p & & p & scraping device to dragline for the propulsion of materials in bulk to the operation in automatic mode, the mechanical members are blocked by the levers and a linkage of the locking and of the clutch, a main control lever 43 engaging the coupling 41 of a separate return motor 39 designed to contribute only to the automatic operation, while releasing the coupling 22 of the winch of the return spring 18, by engaging the coupling 19 of the winch tractor 17 and by blocking the levers of a manual control member 21, 24 of the couplings 19, 22. / p & & p & application: central concrete depot. / p