| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission gear for a farm machine, which obtains driving force by efficiently using driving force of an engine, while including a compact continuously-variable transmission, while allowing advantageous change between forward and backward move. <P>SOLUTION: In a graph, a vertical axis is a velocity line indicating rotary velocity of an output rotor, and a horizontal axis is an operating position line L indicating positions of a tilting plate of the continuously-variable transmission. In the graph, when a virtual tilting plate angle of the continuously-variable transmission corresponding to a position P on the operating position line L where a velocity extension line ME formed by extending an HMT mode velocity line M toward the operating position line L and the operating position line L cross each other, is defined as N, and a substantially maximum tilting plate angle actually generated on the continuously-variable transmission when the continuously-variable transmission is shifted to the operation limit at an advancing high-speed side is defined as X, a tilt angle satisfying that N is 1.5-2.5 times X is set to be a tilt angle B with respect to the operating position line L of the HMT mode velocity line M. <P>COPYRIGHT: (C)2013,JPO&INPIT |
