Importance

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Abstract

An industrial truck comprising at least one steerable wheel is to be guided in dependence on direction-controlling signals which are transmitted to the industrial truck. At a junction the truck receives a direction-controlling steering signal, which causes the at least one steerable wheel to be laterally offset from the guiding signal line until a signal equilibrium which depends on the offset has been established in the steering controller. In dependence on the distance traveled and/or on time, a resetting signal is received which causes the steering means to return to an operating condition in which the vehicle is centered over a signal guiding line to be followed. The signals are transmitted by a guiding signal line, which is buried in the ground and cooperates with a sensor, which is provided at the center of the vehicle and scans the guiding signal line so as to control the deflection of steerable wheels of the vehicle. When a branch to the left or right extends from the straight guiding signal line, a signal calling for a lateral offset from the guide wire (4; 15, 16) is delivered and maintained for causing the vehicle to move along a course that is parallel to the guide wire (4; 15, 16). That parallel offset travel is continued until a signal for resetting the vehicle to a centered position over the guide wire is received.

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First Claim