A material handling vehicle comprises an upper loading surface for loading of objects thereon, a control unit, a power source, a drive motor, at least one vehicle drive wheel powered by the drive motor, at least one vehicle support wheel, a first chassis and a second chassis, each of which comprises at least one wheel of the vehicle. The first and second chassis are pivotally coupled to each other by means of at least one coupling means, wherein said coupling means is arranged intermediate the first chassis and the second chassis at a position where the first chassis is arranged above the second chassis, wherein the coupling means extend at least partly vertically between the first and second chassis at said position. Further there are two drive wheels that are independently controllable. Further, a material handling system comprising at least one such material handling vehicle.

According to some embodiments, an improved tugger and rider cart assembly system is presented. The system comprising a tugger cart with a central space to receive a rider cart; the tugger cart having both front side and rear side pluralities of transport wheels approximately parallel to, but not touching, ground; a front side and a rear side loading wheel positioned closer to the ground than the transport wheels; a rider cart having a first wing and a second wing, both wings having a curved portion; and wherein the loading wheels and wing curved portions can be operatively connected to allow a user to move the rider cart onto the tugger cart thereby allowing the tugger cart to transport the rider cart.

A mobile drive unit includes a pivot between the front chassis unit and the rear chassis unit, thereby diminishing the total height of the unit.

An automated guided trolley for transporting and/or handling a load. The trolley has a main frame for receiving the load and a supporting frame having two walking beams extending respectively towards the front and the rear of the trolley. The walking beams are mounted rotatably with respect to the main frame respectively about a first axis and a second axis and such a walking beam includes elements for securing one arm of one walking beam to one arm of the other walking beam and for supporting the first of these arms on the other arm.

An opening-closing control device according to an embodiment of the present disclosure is a device that controls opening and closing of a plurality of doors of an accommodating portion when a robot executes a task of loading or unloading an object to and from the accommodating portion. The opening-closing control device includes a door opening information acquisition unit that acquires information indicating a door to be opened in order to execute the task; and a control unit that controls, based the on the information indicating the door to be opened in order to execute the task, a lock unit that is arranged corresponding to each of the plurality of doors and that is configured to restrict a door other than the door to be opened in order to execute the task in a closed state.

A material handling vehicle comprising: a chassis, comprising an upper surface arranged on a first loading surface, a plurality of components coupled thereto, including; a power source, a drive motor, at least one drive wheel powered by the drive motor, at least one stabilizing wheel, at least one object sensor for detecting objects in the vehicle surroundings, a wireless interface for communication with other system units, a control unit, and a navigation device. The chassis further comprises at least one opening, arranged at a lowermost portion of the chassis, and extending from a first side portion of the chassis. The one opening arranged to receive a material handling element, and comprises an upper abutment surface and sidewalls, extending along the extension of each opening. A material handling system comprises a group of material handling vehicles, the group comprises at least one of the vehicles and at least one forklift truck.

A material handling vehicle comprising: a chassis, comprising an upper surface arranged on a first loading surface, a plurality of components coupled thereto, including; a power source, a drive motor, at least one drive wheel powered by the drive motor, at least one stabilizing wheel, at least one object sensor for detecting objects in the vehicle surroundings, a wireless interface for communication with other system units, a control unit, and a navigation device. The chassis further comprises at least one opening, arranged at a lowermost portion of the chassis, and extending from a first side portion of the chassis. The one opening arranged to receive a material handling element, and comprises an upper abutment surface and sidewalls, extending along the extension of each opening. A material handling system comprises a group of material handling vehicles, the group comprises at least one of the vehicles and at least one forklift truck.

A rocker bogie includes a first base which including a first wheel, a second wheel, and a third wheel each of which is configured to be in contact with a first flat surface, a second base including a fourth wheel which is configured to be in contact with the first flat surface, and a rotary shaft connecting the first base and the second base to each other such that the second base is rotatable with respect to the first base. The rotary shaft is parallel to a first straight line which connects a rotation center of the first wheel and a rotation center of the second wheel to each other and is disposed between a rotation center of the third wheel and the first straight line, and the fourth wheel is disposed at an opposite position to the third wheel across the first straight line.

A rocker bogie includes a first base which including a first wheel, a second wheel, and a third wheel each of which is configured to be in contact with a first flat surface, a second base including a fourth wheel which is configured to be in contact with the first flat surface, and a rotary shaft connecting the first base and the second base to each other such that the second base is rotatable with respect to the first base. The rotary shaft is parallel to a first straight line which connects a rotation center of the first wheel and a rotation center of the second wheel to each other and is disposed between a rotation center of the third wheel and the first straight line, and the fourth wheel is disposed at an opposite position to the third wheel across the first straight line.

A mobile robot configured to drive on a surface with irregularities, comprising: a chassis having a front end facing a forward direction of travel, a back end, a first side, and a second side. There is a first drive wheel rigidly affixed to the chassis proximate the first side and interconnected to a motor to propel it. There is a second drive wheel rigidly affixed to the chassis proximate the second side and interconnected to a motor to propel it. A first caster assembly is rigidly affixed to the chassis proximate the front end and includes a first caster wheel configured to rotate about a first swivel axis. A second caster assembly is rigidly affixed to the chassis proximate the back end and includes a second caster wheel configured to rotate about a second swivel axis and it includes a compliant member to absorb the irregularities.