A forward/backward switching control apparatus for a hydraulic drive vehicle
that
includes the following structures. A variable displacement type hydraulic pump
driven by an engine for discharging pressure oil in both directions. An electromagnetic
pump inclination angle control mechanism making the discharge displacement of the
variable displacement type hydraulic pump variable and for causing the same to
discharge in both directions. An electric control outputting signals to run the
hydraulic drive vehicle forward, backward and forward/backward. A control device
outputting, when the electric control is switched forward/backward to output the
forward/backward signal and when the time for switching the forward/backward signal
is not longer than a preset time, 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.
