RUNNING TRANSMISSION SWITCHING STRUCTURE OF WORKING VEHICLE

PROBLEM TO BE SOLVED: To enable a vehicle to smoothly start on a slope such as a hill without causing operation to get complicated.SOLUTION: A control means switches a transmission route switching means to a double transmission state where two transmission routes are connected to block rotation of a wheel when a command for connecting the predetermined transmission route concerning the transmission route switching means is received from a first operation means with the braking state of a parking brake detected on the basis of the output of a detection means and also a command for connection concerning a multi-disc type transmission intermittent means is received from a second operation means, thereafter starts to switch the transmission intermittent means from the interception state to the transmission state when a switching of the parking brake to the braking release state is detected on the basis of the output of the detection means, and switches the transmission route from the double transmission state to the transmission state where the predetermined transmission route is connected as the transmission intermittent means extends to the half transmission state.