Transmission for a working vehicle

Abstract

A transmission for a working vehicle like a tractor of the invention is housed in a transmission housing,interposed between an engine and a rear axle housing,. An interior of transmission housing,is divided into a front chamber A and a rear chamber B through a partition wall,. In front chamber A is disposed a main-clutch system partition centering a traveling-input shaft,. In rear chamber B is disposed a speed-changing system as a combination of reversing arrangement and multi-speed-changing arrangement. In a rear-opening of housing,is disposed a bearing plate,. In rear chamber B, a first speed-changing shaft,, a second speed-changing shaft,and a front transmission output shaft,are supported in parallel between wall,and plate,. A regular speed-reduction gear train and a reversing speed-reduction gear train are interposed ed between shafts,and,, so that shafts,and,can be connected with each other through one of the gear trains by a first clutch device C,on shaft,. A second clutch device C,is on shaft,so as to selectively connect shafts,and,directly. A plurality of gear trains for multi-speed stages are interposed between shafts,and,, so that shafts,and,are connected with each other through one of the gear trans by a third clutch device C,on shaft,. A cover,is settled on housing,. A main (second) speed-changing lever,and a sub (first) speed-changing lever,are disposed respectively at both lateral sides of cover,. Third clutch device C,is operated by lever,. First and second clutch devices C,and C,are selectively operated by lever