PURPOSE: To improve operability by installing a power takeoff clutch and such a motor as turning a main clutch to OFF by means of the neutral position operation of a gearshift lever, respectively, in a device which is equipped with a planetary gear transmission system and a continuously variable speed change belt transmission system.
CONSTITUTION: A traveling transmission case of a combine performs a continuously variable speed change operation by means of rotation in the longitudinal direction of a gearshift lever 32 via a link arm 34 and a rod 35, etc. In this case, an input shaft of a reaper unit is made to perform power transmission via a belt 61 to be wrapped across between a pulley 59 locked to this input shaft and a power takeoff pulley, and this power transmission is made so as to turn on or off by operation of a tension clutch pulley (power takeoff clutch) 6. In succession, a switch cam 65 is installed in a lease of the gearshift lever 32, whereby a switch 66 is selected and c.w. or c.c.w. rotation of a motor M is switched. When the gearshift lever 32 is in a neutral area, a main clutch 40 is turned off but other cases, this main clutch 40 is turned to ON.
NAGAI TOSHIRO
KAMIMURA TAKAHIKO
