A stacker crane includes a lower carriage including a lower drive wheel, a lower travel motor, and a support located apart from the lower drive wheel; an upper carriage including an upper drive wheel and an upper travel motor that drives the upper drive wheel; and a mast fixed to the lower carriage, standing upward from the lower carriage and connected to the upper carriage, and including a transfer device capable of moving up and down. A displacement mechanism that raises and lowers the support is provided on the lower carriage between a grounded position supported by a lower rail and a retracted position lifted off the lower rail. The support is lowered to the grounded position when the stacker crane is installed between the lower rail and the upper rail and when the stacker crane is stopped for maintenance, and the support is raised to the retracted position when the stacker crane is operated.

A lift arrangement of a lift truck, especially a forklift truck, has a lift mast defining a z-axis. The lift mast includes a first mast section and a second mast section. Damping elements made from elastic material are provided on the first mast section and/or the second mast section preventing a hard impact of the second mast section with the first mast section at the run-in end position of the second mast section. The damping elements are configured and arranged in such a manner that, in addition to damping the movement of the second mast section in the direction of the z-axis, the damping elements damp movements of the second mast section in the directions of the x-axis and the y-axis running perpendicularly to the z-axis.

A lift arrangement of a lift truck, especially a forklift truck, has a lift mast defining a z-axis. The lift mast includes a first mast section and a second mast section. Damping elements made from elastic material are provided on the first mast section and/or the second mast section preventing a hard impact of the second mast section with the first mast section at the run-in end position of the second mast section. The damping elements are configured and arranged in such a manner that, in addition to damping the movement of the second mast section in the direction of the z-axis, the damping elements damp movements of the second mast section in the directions of the x-axis and the y-axis running perpendicularly to the z-axis.

A variety of vehicle-based and warehouse-based solutions are provided to increase the adaptability, utility, and efficiency of materials handling vehicles in the warehouse environment, such as a materials handling vehicle comprising a hand-held drive unit comprising a user interface and an operational command generator responsive to the user interface. The hand-held drive unit is configured to send operational commands generated in response to user input at the user interface to the vehicular controller(s) to control operational functions of the traction control unit, the braking system, the steering assembly, the mast assembly, the picking attachment, or combinations thereof.

The invention provides an electric lifter, comprising a fixed mast structure, a movable mast structure that is movable relative to the fixed mast structure at feast one transmission means (chain or cog drive belt or rack or similar), and a load carrier, in particular a fork load carrier, being connected to the at least one transmission means and configured to carry a load, wherein the at least one transmission means is movably connected to the movable mast structure while being configured to move along a closed loop path, the closed loop path being stationary relative to the movable mast structure.

The invention provides an electric lifter, comprising a fixed mast structure, a movable mast structure that is movable relative to the fixed mast structure at feast one transmission means (chain or cog drive belt or rack or similar), and a load carrier, in particular a fork load carrier, being connected to the at least one transmission means and configured to carry a load, wherein the at least one transmission means is movably connected to the movable mast structure while being configured to move along a closed loop path, the closed loop path being stationary relative to the movable mast structure.

In a lifting drive mechanism, first and second masts extend in the vertical direction. A lift platform is configured to be lifted or lowered along the first and second masts. A hanging belt includes a first end fixed to an upper portion of the lift platform and a second end fixed to the lower portion of the lift platform. An upper pulley supports the hanging belt. A driving pulley moves the hanging belt in a positive direction and a negative direction. An idler pulley is arranged in front of, in back of, or on both side of the drive pulley. A lower pulley is lower than the upper pulley and supports the hanging belt. A supporting member is pivotable around a fulcrum spaced away from a rotation center of the lower pulley in the horizontal direction, and is fixed. The supporting member includes a first end extending from the fulcrum in the horizontal direction and supporting the lower pulley such that the lower pulley is pivotable.

In a lifting drive mechanism, first and second masts extend in the vertical direction. A lift platform is configured to be lifted or lowered along the first and second masts. A hanging belt includes a first end fixed to an upper portion of the lift platform and a second end fixed to the lower portion of the lift platform. An upper pulley supports the hanging belt. A driving pulley moves the hanging belt in a positive direction and a negative direction. An idler pulley is arranged in front of, in back of, or on both side of the drive pulley. A lower pulley is lower than the upper pulley and supports the hanging belt. A supporting member is pivotable around a fulcrum spaced away from a rotation center of the lower pulley in the horizontal direction, and is fixed. The supporting member includes a first end extending from the fulcrum in the horizontal direction and supporting the lower pulley such that the lower pulley is pivotable.

A plurality of control elements extend from the base portion of a control module in a materials handling vehicle. The control elements are located adjacent to one another, wherein at least one of the control elements includes mounting structure that permits the control element to be selectively mounted to the base portion in at least first and second positions. The first position defines a first distance between the control element and an immediately adjacent control element and the second position defines a second distance between the control element and the immediately adjacent control element, the second distance being greater than the first.

A plurality of control elements extend from the base portion of a control module in a materials handling vehicle. The control elements are located adjacent to one another, wherein at least one of the control elements includes mounting structure that permits the control element to be selectively mounted to the base portion in at least first and second positions. The first position defines a first distance between the control element and an immediately adjacent control element and the second position defines a second distance between the control element and the immediately adjacent control element, the second distance being greater than the first.