| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a structure which can secure durability by preventing the occurrence of such a malfunction that a gross slip is generated at a traction part accompanied by the operation of a stopper mechanism 22.SOLUTION: A limit gear change ratio (limit speed increase side gear change ratio and limit speed reduction side gear change ratio) being a gear change ratio at a time point at which an inclined face part 25 of a protrusive piece 24 constituting a stopper mechanism 22 and an end part side face of a support beam part 9b of a trunnion 7b abut on each other is learnt. The largest speed increase side gear change ratio is set so as not to be larger than the limit speed increase side gear change ratio, and the largest speed reduction side gear change ratio is set so as not to be smaller than the limit speed reduction side gear change ratio, respectively, and within a range from the largest speed reduction side gear change ratio up to the largest speed increase side gear change ratio, gear change ratio control between an input disc 2 and an output disc 5 is performed.</p> |
