PLANETARY WINCH Russian patent published in 2000 - IPC

FIELD: materials handling facilities. SUBSTANCE: planetary winch has drive excenter shaft installed on bearing in housing, drum provided with projections, and supports cantilever mounted on housing. Support is made in form of cogs of semiround section forming cogwheel engagement by its cylindrical surface with drum projections, depth of spaces exceeding cog section radius minimum by value of eccentricity. Cogs are rigidly intercoupled by their ends not secured on housing. Outer surfaces of cogs are arranged along cylindrical surface whose diameter is equal to diameter of drum projections. Winch is furnished with flexible member enclosing cogs and drum, and with conical flanges provided with shock-absorbing bushings. Flexible member can be made in form of flexible holder. In this case turns of wire rope are freely laid on flexible holder between conical flanges. Flexible member can be made also in form of wire rope turns freely laid on surface formed by cogs and projections of drum, between conical flanges. Excenter shaft can be made tubular with concentrically fitted-in intermediate shaft coaxially secured in crankshaft ratchet gear. EFFECT: simplified design, enhanced reliability and manufacturability of construction. 5 cl, 2 dwg