POWER TRANSMISSION MECHANISM AND ROTARY MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a power transmission mechanism for suppressing vibration generated in the power transmission mechanism, improving the durability of a rotary machine and the power transmission mechanism itself and facilitating the improvement of the suppressing effect of a rotating shaft on radial vibration generated in the rotating shaft of the rotary machine. SOLUTION: The power transmission mechanism PT comprises a pulley 17 supported on the side of a housing and a receiving member 42 fixed to a driving shaft 16. The receiving member 42 is provided with a dynamic damper having a roller 46 to be moved along a rolling guide surface 42E formed on a peripheral wall portion 42C to perform pendular movement. The roller 46 is stored in a storage chamber formed between the pulley 17 and the receiving member 42. On a power transmission path between the pulley 17 and the receiving member 42, a rubber damper 43 is provided which performs power transmission while absorbing shaft misalignment between the pulley 17 and the receiving member 42.