Two-diesel propulsive installation with coaxial propellers of counter-rotation

摘要

A two-diesel propulsive installation with coaxial propellers of counter-rotation contains two main reversible Diesel engines, two screw propellers in-series located on coaxial shafts in such a way that the rear screw is rotated by internal shaft, and front screw - by means of external shaft, bearing units, and a gearing made in the form of a double-flow circuit. Motion from each of the main engines through the disengaging clutches is transmitted to the power shafts of said gearing, and from herring-bone gears to herringbone gears of connecting shafts installed on the power shafts and further to the herring-bone gear of external shaft, and also from the spur gears, which are located on the connecting shafts, through the spur parasitic gears the motion is transmitted to the spur gear of internal shaft; in this case the supports of gears are made in the form reel-shaped type rollers and have three belts each, which contact with appropriate cylindrical sections of gears turned to them; moreover rollers are installed in the housing of engagement in the bushings of unenclosed hydrostatic bearings.