A materials handling vehicle comprises an obstacle scanning tool and steering mechanism, materials handling hardware, vehicle drive mechanism, and user interface that facilitate movement of the materials handling vehicle and materials handled along a travel path. The tool establishes a scan field, a filter field, and a performance field, and is configured to indicate the presence of obstacles in the filter field and the performance field. The tool executes logic to establish the performance field in response to an input performance level, scan for obstacles in the filter field and the performance field, execute obstacle avoidance for obstacles detected in the filter field, and execute a performance level reduction inquiry for obstacles detected in the performance field wherein outcomes of the inquiry comprise reduction of the performance level when a performance level reduction is available and execution of obstacle avoidance when a performance level reduction is not available.

The invention relates to a method for controlling a motion of a counter balance forklift truck, the method comprises: detecting that a steering command generated with an endless rotating steering device corresponds to a reference steering point, in response to the detection providing at least two states for selecting a travel direction of the counter balance truck, detecting a selected state in accordance with a detection of a change in a steering command, and generating control signals individually to a plurality of electric drive motors for controlling the motion of the counter balance truck to meet the travel direction selected with the steering device. The invention also relates to a forklift truck implementing the method and to a computer program product.

A support system for a vehicle includes a base and at least a first and a second support arm. Each of the first and the second support arms include a base end pivotally coupled to the base through a respective hinge assembly. Each of the first and the second support arms further include a distal end opposite the base end. The support system also includes a respective wheel assembly coupled to each distal end. Each wheel assembly includes an independently powered and steerable wheel configured to engage a travel surface, a propelling motor configured to drive a respective first support arm between a stowed condition and a deployed condition unaided while the vehicle remains stationary, and a steer actuator configured to change an angle of the wheel with respect to a respective support arm.

A material handling vehicle. The material handling vehicle including a vehicle body, an operator compartment, and a mast. The mast has a mounting platform, a first support member coupled to the mounting platform, a second support member coupled to the mounting platform, and a detection system coupled to the mast. The mast is coupled to the vehicle body at a frontward location relative to the operator compartment. The position of the mast on the vehicle body prevents the mast from impeding a field of view of an operator positioned in the operator compartment.

The parallel maneuvering system is a steering system for portable devices, portable platforms and the like, allowing individual wheels to be steered in a parallel and simultaneous manner. The parallel maneuvering system includes a first coupler and a second coupler, which are slidably mounted with respect to one another, and which each include a pair of arms for eccentric pivotal attachment to a corresponding pair of wheel assemblies. The first and second couplers are mounted within a hollow chassis, and the wheel assemblies are mounted to the hollow chassis such that respective wheels thereof are mounted external to the hollow chassis, and respective eccentric crank arms thereof are mounted within the hollow chassis. At least one linear actuator may be provided for selectively driving sliding movement of the first coupler with respect to the second coupler.

An industrial truck comprising a driver's cab including a steering unit, a steering bracket having a base plate and a profile structure for receiving the steering unit, a fastener disposed in combination with the driver's cab and configured to secure the steering bracket to the driver's cab, and an adapter unit mounting the steering bracket to the driver's cab while allowing variations in the vertical position of the steering unit. More specifically, the steering unit defines a longitudinal cavity for receiving the outwardly projecting profile structure of the steering bracket. Additionally, the adapter plate defines at least two apertures, at least one of the apertures mounting to one of the at least two height differentiating positions of the fastener. As such, the vertical height of the steering unit may be varied relative to a fixed vertical height or position within the driver's cab.

A materials handling vehicle includes: a power unit including: a steered wheel, and a steering device for generating a steer control signal; a load handling assembly coupled to the power unit; a controller located on the power unit for receiving the steer control signal; and a sensing device on the power unit and coupled to the controller. The sensing device monitoring areas in front of and next to the vehicle. Based on sensing device data, the controller may modify at least one of the following vehicle parameters: a maximum allowable turning angle or a steered-wheel-to-steering-device ratio.

A method is provided for controlling a light source device associated with a materials handling vehicle, wherein the materials handling vehicle includes one or more sensing devices, comprising: sensing via the one or more sensing devices a first distance from a left side of the vehicle to a first boundary object and a second distance from a right side of the vehicle to a second boundary object; controlling the light source device to designate a first area to the left side of the vehicle as either a limited operation area or a non-limited operation area and to designate a second area to the right side of the vehicle as either a limited operation area or a non-limited operation area.

A materials handling vehicle includes a power unit, a load handling assembly and a positioning assistance system that provides assistance to an operator that is driving the vehicle. The assistance provided by the positioning assistance system includes at least one of an audible, tactile, or visual cue to indicate at least one of: a distance from the vehicle to a boundary object; or a heading of the vehicle with respect to the boundary object.

A height adjustment module includes a mounting part extending on a plane; a plurality of support arms disposed around the mounting part on the plane on which the mounting part has been extended, and coupled to the mounting part to be rotatable upward or downward; a plurality of travelling parts each being coupled to a first end portion of the support arm, respectively, and including a wheel contacting the ground, respectively; a lift extending over the plane, and connected to second end portions of the plurality of support arms so that vertical movement is interlocked with each other; and a support link coupled to the mounting part to be vertically slidable, and coupled to the lift to be vertically fixed to move the mounting part relative to the lift as the support link is slid in the mounting part.