| 摘要 |
PURPOSE: To establish one identical driving speed by installing input gears, capable of using selectively a first driving speed and a second driving speed different therefrom and generating the same output peripheral surface driving speed from the two and also installing output gears to mesh with the input gears. CONSTITUTION: In order to operate a pump by a gear transmission device 16 at one typical speed when the drive input is 1500 rpm, a gear device needs to be configured with eighty-one input gears 86, sixty-eight transmitting gears 124 and 130, sixty-seven output gears 126 and 128, and one hundred and fifty one output gears 132 and 134. Accordingly, the transmission gear turns at 1,786 rpm, and the peripheral surface speed becomes such as to rotate the output gears 126, 132, 128, 134 at 1,813 rpm and 804 rpm, respectively. When the drive input is at 1,800 rpm, there are sixty seven input gears 140, and the transmission gear rotates at 1,778 rpm, and the peripheral surface speed becomes such as to rotate the output gears 126, 132, 128, 134 at 1,802 rpm and 800 rpm, respectively. Whichever power source is used, therefore, the peripheral surface speed to the output gears will substantially rotate the output gears at one identical speed. |
