Conveyor device

A conveyor device, comprising

• a) a plurality of rack elements (310a-d) arranged in a first row to define a first conveyor track (310a-d), wherein said first conveyor track (310) is adapted to guide and carry an object (40, 140, 340) along a first conveying direction
• b) a plurality of rack elements (320a-d) arranged in a second row to define a second conveyor track (320),
• wherein said second conveyor track (320) is adapted to guide and carry an object (40, 140, 340) along a second conveying direction,
• wherein said second conveyor track (320) extends in said second conveying direction and is positioned in a lateral distance to said first conveyor track (310) with respect to said second conveying direction,
• wherein each rack element comprises a movable carrier device having an upper load surface (11) and a coupling interface (12),
• c) a robot unit (20) with a traction device (21) and a driving device (30), wherein said traction device (21) is adapted to move said robot (20) unit along said first or said second conveying direction and said driving device (30) is adapted to engage said coupling interface (12) of said movable carrier device (10) to drive said movable carrier device (10),
• d) a cross traverse rack element (350) adapted to take up said robot unit (20), wherein said cross traverse rack element (350) comprises a traverse movable load carrying device (10) having an upper traverse load surface (11) adapted to take up an object and a traverse coupling interface (12),
• wherein said cross traverse rack element (350) is adapted to move in a lateral direction with respect to said second conveying direction from said first conveyor track (310) to said second conveyor track (320) and vice versa,
• wherein said cross traverse rack element (350) is further adapted to couple to said first conveyor track (310) and to transfer an object (40) positioned on said traverse load surface (11) to said load surface (10) of said movable carrier device (10) of a rack element (310a-d) of said first conveyor track (310) and vice versa in a first position of said cross traverse rack element (350),
• wherein in said first position said cross traverse rack element (350) is coupled to said rack element (310a-d) of said first conveyor track (310) such that said robot unit (20) may move from said cross traverse rack element (350) to said rack element (310a-d) of said first conveyor track (310) and vice versa,
• wherein said cross traverse rack element (350) is further adapted to couple to said second conveyor track (320) and to transfer an object positioned on said traverse load surface (11) to said load surface (11) of said movable carrier device (10) of a rack element (320a-c) of said second conveyor track (320) and vice versa in a second position of said cross traverse rack element (350),
• wherein in said second position said cross traverse element (350) is coupled to said rack element (320a-c) of said second conveyor track (320) such that said robot unit (20) may move from said cross traverse rack element (350) to said rack element (320a-c) of said second conveyor track (320) and vice versa.