TRANSMISSION AND WORK VEHICLE

A first carrier of a first planetary gear mechanism is connected to an input shaft. A second sun gear of a second planetary gear mechanism is connected to the first carrier. A second ring gear of the second planetary gear mechanism is connected to a first ring gear of the first planetary gear mechanism. A first variable device continuously changes a speed ratio of an output shaft to the input shaft. The first variable device is connected to the first ring gear and the second ring gear.