A multidirectional transport vehicle includes a longitudinal axis which defines a longitudinal direction, a transverse axis which defines a transverse direction, a steering system, a driving direction switch, and a driving direction adjustment element. The steering system comprises at least three independently steerable wheels and a steering target value transmitter which steers the wheels. Each wheel has a wheel axle. A steering pole, on which each wheel axle is aligned when cornering, is moved along a steering pole axis by actuating the steering target value transmitter. The driving direction switch includes a limited number of separate switch positions, wherein exactly one switch position preselects exactly one respective rotational position of the steering pole axis relative to the multidirectional transport vehicle and preselects one of two driving directions facilitated thereby. The driving direction adjustment element changes a preselectable rotational position of the steering pole axis.

A materials handling vehicle comprises an operator compartment, a compartment tower, a multi-field scanning tool, and mechanisms that facilitate movement along a travel plane in a warehouse. The tool establishes a scan field, and, within scan field bounds, an occupancy detection field and an obstacle detection field. Tool scanning hardware is configured to generate the scan field from a point of origin that is elevated relative to the operator compartment and to expand the scan field such that it intersects the operator compartment and extends laterally beyond lateral edges of the operator compartment such that the occupancy detection field falls within the operator compartment, the obstacle detection field falls outside of the operator compartment, and the multi-field scanning tool is configured to indicate the presence of an occupant in the occupancy detection field and obstacles in the obstacle detection field.

A method for operating an industrial truck having three wheels. During longitudinal travel, two steerable wheels run in succession in a first lane, and a third wheel runs in a second lane. The third wheel initially runs on an inside during a turning in while cornering until the industrial truck, during a further turning in, transitions into a revolving motion. The method includes reducing a drive power as of a specific steering angle during the turning in prior to the revolving motion, and disengaging or reversing a direction of a drive rotation of the third wheel after a delay time which begins with the reducing of the drive power, or, continuously reducing the drive power from the specific steering angle during the further turning in, and disengaging or reversing the direction of rotation of the third wheel when transitioning into the revolving motion.

Vehicles, systems and methods for providing articulating two section vehicles with tracks, and a front body attached superstructure with telescopic forklift, for use on all terrain condition applications. The vehicle can include front and rear track assemblies that can tilt up and down while traveling over different ground surfaces. Each of the track assemblies can have rotatable articulating/oscillating track wheels which can traverse different contoured surfaces. The right and left tracks on both the front and rear track assemblies can separately extend outward and inward from underneath the vehicles to add stability to the vehicles. The cab can be raised and lowered to add greater visibility for the operator. Hydraulics can be used for raising and lowering the extendable boom and operator cab, as well as controlling the body articulating hinge, the articulating tracks and the tilting controls for the front track assembly.

The present invention relates to a hydraulic steering system for a vehicle, in particular an industrial truck, comprising: a steering cylinder having two chambers and a hydraulic connection at each of the two chambers for activating a steering movement of at least one wheel of the vehicle; at least one hydraulic pump; at least one hydraulic tank for receiving hydraulic oil; and a steering block which comprises: two first hydraulic connections for connecting to the two hydraulic connections of the steering cylinder; at least two second hydraulic connections for supplying hydraulic oil from the hydraulic pump to the steering block and feeding the hydraulic oil back into the hydraulic tank; and a controllable valve assembly which receives control signals from a steering angle detection device and is designed to convey hydraulic oil to the steering cylinder on the basis of said control signals; the controllable valve assembly being further designed to be shiftable into at least one neutral position in which it allows a flow of hydraulic oil between the two chambers of the steering cylinder. The hydraulic steering system further comprises a pump device which is designed to stimulate the flow of hydraulic oil between the two chambers of the steering cylinder when the valve assembly is in the neutral position.

An unmanned carrier vehicle includes a vehicle body; a plurality of wheels attached to the vehicle body; a steering actuator for adjusting a steering angle of each of the wheels; a cargo section arranged movably on the vehicle body in planar view; and a control unit configured to output an instruction for moving the cargo section, when adjustment of the steering angle is performed at least in a state that the vehicle body remains stopped, to reduce a load acting on one or more target wheels each being an adjustment target for the steering angle with the steering actuator among the plurality of wheels.

A lift device includes a chassis, a first actuator coupled to the chassis, a second actuator coupled to the chassis, a third actuator coupled to the chassis, a fourth actuator coupled to the chassis, and a fluid circuit. The fluid circuit is configured to facilitate selectively fluidly coupling the first actuator, the second actuator, the third actuator, and the fourth actuator in at least four different configurations where, in each of the at least four different configurations, two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly coupled together while the other two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly decoupled.

A lift device includes a base, an arm, a drive actuator, a tractive element, and a steering actuator. The arm has a base end coupled to the base and a tractive element end. The arm includes a steering actuator interface positioned along an exterior surface of the arm. The drive actuator is pivotally coupled to the tractive element end of the arm. The tractive element is coupled to the drive actuator. The steering actuator has a first end coupled to the steering actuator interface and an opposing second end coupled to the drive actuator. The arm includes a plate extending forward of the exterior surface of the arm and past the steering actuator.

An operating method for an industrial truck. The industrial truck includes a hydraulic pump which provides a hydraulic output, an output setpoint value generator which controls the hydraulic output to influence a traveling speed, two drive wheels which respectively comprise a hydraulic drive unit driven via the hydraulic pump, and a hydraulic device. The hydraulic device is switchable between a first switching state, where the hydraulic drive units are supplied with hydraulic outputs which are different, and a second switching state, where the hydraulic drive units are supplied with hydraulic outputs that have a particular ratio with respect to each other. The operating method includes detecting at least one operating parameter of the output setpoint value generator, comparing the at least one operating parameter with a predefined threshold value, and moving the hydraulic device from the first switching state to the second switching state based on the comparison.

A lift device includes a base having a first end and an opposing second end, a first arm pivotally coupled to the first end, a second arm pivotally coupled to the first end, a third arm pivotally coupled to the opposing second end, a fourth arm pivotally coupled to the opposing second end, and a leveling assembly. The leveling assembly includes a first actuator extending between the first arm and the first end, a second actuator extending between the second arm and the first end, a third actuator extending between the third arm and the opposing second end, a fourth actuator extending between the fourth arm and the opposing second end, and a controller configured to control the first actuator, the second actuator, the third actuator, and the fourth actuator to reconfigure the leveling assembly between (i) a shipping, transport, or storage mode and (ii) an operational mode.