Running control device for industrial vehicle

DETAILED DESCRIPTION The present invention was devised with a focus on the abovementioned problem points; it is an object of the present invention to provide a running control device for an industrial vehicle with superior driving operability that allows easy starting into motion or stopping in place on road surfaces that have a slope or step parts.
In order to achieve the abovementioned object, a first aspect of the present invention provides a running control device for an industrial vehicle comprising: an engine; an operation amount detection sensor which detects an operation amount of accelerator means for controlling engine revolutions; a transmission which has a forward clutch and reverse clutch that respectively switch a direction of travel of the vehicle to a forward direction and reverse direction, and which transmits a driving torque of the engine to driving wheels via the forward clutch or reverse clutch; a brake which applies braking to the vehicle; and a controller which controls an engaging force of the forward clutch and reverse clutch and a braking force of the brake during the running of the vehicle, and which controls the engine revolutions on the basis of the operation amount detected by the operation amount detection sensor; wherein the controller simultaneously controls the engine revolutions, the engaging force of the forward clutch and reverse clutch and the braking force of the brake, on the basis of the operation amount detected by the operation amount detection sensor.
In the first aspect of the invention, since the braking force of the brake, the engaging force of the clutch and the engine revolutions are simultaneous controlled merely by controlling the operation amount using the accelerator means, the operability during starting, especially the operability in the case of starting into motion in a state in which the vehicle wheels are riding on an inclined surface, such as starting into motion on a sloping road or the like, is extremely good.
Furthermore, as a result of the simultaneous control of the braking force of the brake, engaging force of the clutch and engine revolutions, starting into motion at a very low speed, traveling at a very low speed and stopping at a very low speed can be accomplished by controlling only the operation amount