| 摘要 |
PURPOSE: It is rotated to the direction in which the first and the second driving shaft the same. Inside is smoothly lubricated. The durability and the output are improved. CONSTITUTION: A propulsion device(110) comprises first and second motors(114,116), first and second driving shafts(115,117), first and second rotary shafts(122,124). The first and second motors are installed in a hull(102). The first drive shaft is expanded through a strut(112) as a thruster(120). The first and second driving shafts transfer the driving force of the first and second motors respectively. The second driver shaft is inserted into the portion of the first drive shaft. In the first rotary shaft is thruster, it is expanded as outside. The first rotary shaft transfers the driving force of the first drive shaft to a first propeller(126) by the first gear part. In the second rotary shaft is thruster, it is expanded with oppositely to the first rotary shaft. The second rotary shaft transfers the driving force of the second driver shaft with the second gear to a second propeller(128). |
