A robotic shuttle system includes a rack system and one or more shuttles. The rack system includes a rack and a shuttle frame. The rack has storage locations for containers containing items. The shuttle frame has rails disposed along the rack. The shuttle includes a powertrain, container transfer mechanism, and a robot arm. The power train is configured to move the shuttle along the rails of the rack and on a surface outside of the rack system. The container transfer mechanism is configured to transfer the containers between the rack and the shuttle. The robot arm extends from the shuttle to transfer the items between one of the containers on the shuttle and a container in a container holder of the shuttle.

A robotic shuttle system includes a rack system and one or more shuttles. The rack system includes a rack and a shuttle frame. The rack has storage locations for containers containing items. The shuttle frame has rails disposed along the rack. The shuttle includes a powertrain, container transfer mechanism, and a robot arm. The power train is configured to move the shuttle along the rails of the rack and on a surface outside of the rack system. The container transfer mechanism is configured to transfer the containers between the rack and the shuttle. The robot arm extends from the shuttle to transfer the items between one of the containers on the shuttle and a container in a container holder of the shuttle.

The pallet stacking machine comprises a pallet housing, a pallet lifter, a control unit, and operator controls. The pallet stacking machine may be operable to lift a pallet stack so that an individual pallet may be added to the bottom of the pallet stack. The pallet stacking machine may be operable to lift a subset of the pallet stack that excludes a bottom pallet so that the bottom pallet may be removed from the pallet stack. The individual pallets comprising the pallet stack may be of one or more sizes, shapes, forms, and materials. As non-limiting examples, the individual pallets comprising the pallet stack may comprise mixed dimensions such as 48 inch×48 inch pallets and 40 inch by 48 inch pallets, may comprise a mix of two-way entry pallets and four-way entry pallets, and may comprise a mix of pallet materials.

The pallet stacking machine comprises a pallet housing, a pallet lifter, a control unit, and operator controls. The pallet stacking machine may be operable to lift a pallet stack so that an individual pallet may be added to the bottom of the pallet stack. The pallet stacking machine may be operable to lift a subset of the pallet stack that excludes a bottom pallet so that the bottom pallet may be removed from the pallet stack. The individual pallets comprising the pallet stack may be of one or more sizes, shapes, forms, and materials. As non-limiting examples, the individual pallets comprising the pallet stack may comprise mixed dimensions such as 48 inch×48 inch pallets and 40 inch by 48 inch pallets, may comprise a mix of two-way entry pallets and four-way entry pallets, and may comprise a mix of pallet materials.

The present invention relates to a material handling system using mobile cart which provides efficient storage and retrieval of payloads in a three-dimensional warehousing system and on multiple levels. In one embodiment, the mobile cart including a first frame comprising of eight wheels, the primary four wheels of the first frame are configured to move mobile cart in the ‘X’ direction motion, and the secondary wheels of the first frame which are pinion inbuilt wheels configured to move mobile cart in the ‘Z’ direction motion. Further, the mobile cart includes a second frame which is moveably attached to the first frame, the second frame including a gear motor, drive pulley, drive belt, four lead screw units, a plurality of sensors and tertiary four wheels, the tertiary four wheels are configured to move mobile cart in the ‘Y’ direction motion.

A forklift includes a vehicle and a cargo handling device. The cargo handling device includes a mast, a lift bracket, and a pair of forks that includes claw portions, the forks being separated from each other in a vehicle width direction. The vehicle includes a vehicle main body, and a pair of straddle legs that is provided such that the straddle legs extend to the front side from a lower portion of the vehicle main body and the cargo handling device is interposed between the straddle legs in the vehicle width direction and that supports the mast such that the cargo handling device is movable forward and backward between an advance position and a retreat position, and front ends of the claw portions are positioned behind front ends of the straddle legs when the cargo handling device is at the retreat position.

A lift vehicle includes a chassis, an implement, a lift arm coupling the implement to the chassis, a load sensor, a tilt sensor, and a controller. The lift arm includes an actuator configured to selectively extend the lift arm and a length sensor configured to provide data relating to a length of the lift arm. The load sensor can provide data relating to a load at the implement. The tilt sensor can provide data relating to an angular orientation of the chassis relative to a reference plane. The controller can receive data from the length sensor, the load sensor, and the tilt sensor. The controller can determine, based on the data from the load sensor and the tilt sensor, an operating envelope for the lift arm. The operating envelope can include a maximum extension of the lift arm. The controller can selectively limit an operation of the lift arm such that the lift arm operates within the operating envelope.

A lift vehicle includes a chassis, an implement, a lift arm coupling the implement to the chassis, a load sensor, a tilt sensor, and a controller. The lift arm includes an actuator configured to selectively extend the lift arm and a length sensor configured to provide data relating to a length of the lift arm. The load sensor can provide data relating to a load at the implement. The tilt sensor can provide data relating to an angular orientation of the chassis relative to a reference plane. The controller can receive data from the length sensor, the load sensor, and the tilt sensor. The controller can determine, based on the data from the load sensor and the tilt sensor, an operating envelope for the lift arm. The operating envelope can include a maximum extension of the lift arm. The controller can selectively limit an operation of the lift arm such that the lift arm operates within the operating envelope.

A lift device includes a base assembly, a turntable assembly, and a controller. The base assembly includes multiple base assembly batteries. The turntable assembly is rotatably coupled with the base assembly through a slip ring transmission. The turntable assembly includes multiple turntable assembly batteries. The controller is configured to operate the base assembly batteries to discharge electrical energy to the turntable batteries through the slip ring transmission. The slip ring transmission is configured to both (1) drive the turntable assembly to rotate relative to the base assembly and (2) to electrically and communicably couple electrical components of the base assembly with electrical components of the turntable assembly.

A lift device includes a base assembly, a turntable assembly, and a controller. The base assembly includes multiple base assembly batteries. The turntable assembly is rotatably coupled with the base assembly through a slip ring transmission. The turntable assembly includes multiple turntable assembly batteries. The controller is configured to operate the base assembly batteries to discharge electrical energy to the turntable batteries through the slip ring transmission. The slip ring transmission is configured to both (1) drive the turntable assembly to rotate relative to the base assembly and (2) to electrically and communicably couple electrical components of the base assembly with electrical components of the turntable assembly.