'SHIFT CONTROL SYSTEM FOR INDUSTRIAL VEHICLE

摘要

A shift control system for industrial vehicle includes: a vehkle speed device that detccts a vehicle speed of an industrial vehicle; a transmission device that 5 shifts up and shifts down a speed stage of a transmission; a shift control device that pennits shift up by the transmission device when a vehicle speed detected by the vehicle speed detection device becomes equal to or greater than a shift up permission vehicle speed; a height position detection device that detects a height position of a working machine device; a fowardhackward switch device that switches the industrial vehicle 10 between forward travel and backward travel; and a shift up control switch selection device that switches between normal controI, in which shift up is performed by the transmission device when the vehicle speed becomes equal to or greater than the shift up permission vehicle speed, and delay control, in which shift up timing is dclayed with respect to the normal control.