| 摘要 |
PURPOSE:To obtain a propelling device which no variations in thrust and torque by providing a transmission mechanism by which the rotational speed of a propeller is not changed even though the thrust direction is changed during rotation of the propeller. CONSTITUTION:When the direction of propeller thrust is constant, the rotational speed of a propeller 11 is transmitted to an intermediate shaft 7, a pinon gear 8, a gear 9, a propeller shaft 10 and a propeller 11, the speed thereof being successively reduced, through an input shaft 2, a pinion 3, a gear 4 an intermediate shaft drive bearing case 5 and a bevel gear train 6. When a turning motor 12 is rotated in the direction A, a turning bevel gear train 13 rotates a spur gear 4 counterclockwise and rotates a spur gear 14 and a support column 15 clockwise. At his time, the spur gear 14 allows the bevel gear train 6 to compensate the turning of a lower gear 6c on the intermediate gear 7 corresponding to the rotational speed, through a gear incorporated in the intermediate shaft drive bearing case 5. With this arrangement, it is possible to compensate the rotational speed of the intermediate shaft 7, thereby it is possible to make the rotational speed of the propeller always constant. |
