PROBLEM TO BE SOLVED: To improve the performance of a propeller damper.SOLUTION: A propeller 11 includes: a bush 31 which integrally rotates with a propeller shaft 10; a propeller damper 32 disposed around the bush 31; and an inner cylinder 25 which encloses the bush 31 through the propeller damper 32. The bush 31 includes: a first cylindrical part 40 which encloses the propeller shaft 10; and a first protrusion 41 which protrudes outward from the first cylindrical part 40 and is integrally formed with the first cylindrical part 40. The inner cylinder 25 includes: a second cylindrical part 35 which encloses the bush 31 through the propeller damper 32; and a second protrusion 36 which protrudes inward from the second cylindrical part 35. The inner cylinder 25 may rotate relative to the bush 31 between a non-contact position where the first protrusion 41 and the second protrusion 36 are separated from each other in a circumferential direction and a contact position where the first protrusion 41 and the second protrusion 36 are placed in contact with each other by elastic deformation of the propeller damper 32.
【課題】プロペラダンパーの性能を高めること。【解決手段】プロペラ11は、プロペラシャフト10と一体回転するブッシュ31と、ブッシュ31の周囲に配置されたプロペラダンパー32と、プロペラダンパー32を介してブッシュ31を取り囲む内筒25とを含む。ブッシュ31は、プロペラシャフト10を取り囲む第1筒部40と、第1筒部40から外方へ突出した、第1筒部40と一体の第1突起41とを含む。内筒25は、プロペラダンパー32を介してブッシュ31を取り囲む第2筒部35と、第2筒部35から内方へ突出した第2突起36とを含む。内筒25は、第1突起41と第2突起36とが周方向に離れた非接触位置と、プロペラダンパー32の弾性変形により第1突起41と第2突起36とが接触する接触位置との間で、ブッシュ31に対して回動可能である。【選択図】図2
PROPELLER FOR SHIP PROPULSION MACHINE AND SHIP PROPULSION MACHINE INCLUDING THE SAME
船舶推進機用のプロペラおよびこれを備えた船舶推進機
2015-12-07
Patent
Electronic Resource
Japanese