Patent ID: 7437965

Claim:
A gear shift control device for a work vehicle in which an output shaft of an engine is connected to an input clutch that is arranged between the engine and a transmission, the gear shift control device being operable to control the transmission that includes gear shift clutches and is arranged on a power transmission path for the engine, the gear shift control device comprising: gear shift clutch control means for selecting a gear shift clutch in response to a gear shift command to switch from a gear shift clutch used before gear shifting to the selected gear shift clutch to be used after the gear shifting to cause engine power to be transmitted to the selected gear shift clutch of the transmission to be used after the gear shifting via the input clutch; and input clutch control means for controlling the input clutch so as to start a cut-off operation in a period of time from when a cut-off operation of the gear shift clutch used before the gear shifting is started to when a connecting operation of the selected gear shift clutch to be used after the gear shifting is completed, switching the input clutch from the connected state to a power transmittable sliding state, and maintaining the sliding state at least until the connecting operation of the gear shift clutch to be used after the gear shifting is completed.