摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a transmission having a subtransmissioin mechanism, which is capable of obtaining a large reduction ratio suited for heavy article transportation. <P>SOLUTION: The transmission having a subtransmission mechanism includes: a main shaft 13; an output shaft 14 disposed coaxially to the main shaft 13; a counter shaft 15 disposed in parallel to the main shaft 13 and the output shaft 14; an idler shaft 60 disposed between the output shaft 14 and the counter shaft 15; a main transmission part 72 having a transmission gear train between the main shaft 13 and the counter shaft 15; a subtransmission part 73 including a planetary gear mechanism 141; and a transmission case 11. The substransmission part 73 includes a first speed reduction gear 52 disposed in the counter shaft 15, an idler gear 61 disposed in the idler shaft 60 to be engaged with the first speed reduction gear 52, a second speed reduction gear 53 supported by the output shaft 14 to be engaged with the idler gear 61, rotation stopping means 51 for stopping rotation of a ring gear 45, and selection coupling means 50 for selectively coupling the ring gear 45 with one of the output shaft 14 and the second speed reduction gear 53. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |