Patent ID: 6915631

Claim:
A forward/backward switching control apparatus for a hydraulic drive vehicle, comprising: a variable displacement type hydraulic pump driven by an engine for discharging pressure oil selectively in two directions; an electromagnetic pump inclination angle control mechanism for making the discharge displacement of the variable displacement type hydraulic pump variable and for causing the same to discharge selectively in the two directions; electric operating means for outputting signals to run the hydraulic drive vehicle forward or backward; and control means for measuring a switching time when the electric operating means is switched either from a forward position through a neutral position to a backward position or from the backward position through the neutral position to the forward position to output a forward signal or a backward signal; and when the switching time is not longer than a preset time, outputting a first modulate signal for delaying the return times from the forward position to the neutral position and from the backward position to the neutral position to the electromagnetic pump inclination angle control mechanism.