DAMPING DEVICE OF TORSION EXCITATION OF HOLLOW DRIVE SHAFT Russian patent published in 2012 - IPC F16C3/02 F16F15/16 F16F15/23 F16F9/18 

FIELD: machine building.

SUBSTANCE: device includes elongated element (7) that passes along inner space of drive shaft; at that, one end of element is fixed on one shaft end, and the other end of element is located at the other end of shaft and hydraulic damping device (11) fixed on the other shaft end for damping of vibrations of the other end of element (7). Damping device (11) includes cylinder-piston system (25) having the first and the second cylindrical hydraulic chambers (45a, 47a), tank (19) for hydraulic fluid and hydraulic circuit (29, 31, 33, 35), by means of which chambers (45a, 47a) are connected to hydraulic fluid tank (19). Damping device (11) is located so that any leak flow of hydraulic fluid from the first (45a) and the second (47a) chambers through the boundary line between piston and cylinder flows to hydraulic fluid tank (19).

EFFECT: creation of more compact design of hydraulic damping device of torsion excitation of hollow drive shaft with possibility of controlling the damping level and operating without cavitation.

12 cl, 5 dwg