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Cranes with igm welding robots

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More than a dozen different large components for slewing tower cranes, for example slewing platforms or undercarriages for fast-erecting cranes, slewing gear bearings, or slewing ring supports for slewing platforms can be welded by igm welding robots. 

With their floor track mounted lifting columns, their rotating cantilever arms, and the axes of the manipulator, the system for slewing gear bearings have a total of over twelve axes and thus the highest possible level of mobility. All axes work with simultaneous movements, so that the robot can even weld very complex parts in the flat position.


Slewing tower cranes and fast-erecting cranes

Large components - such as slewing platforms for slewing tower cranes and fast-erecting cranes - have a width of up to 2.5 m and a length of up to six meters. The manipulator used is one of the largest ever built. Its 3.5 m rotating arm pivots workpieces weighing ten tons. An integrated hoist lifts and lowers the rotating arm by two meters. Finally, the faceplate is used to achieve the degrees of freedom needed for welding on all sides.

igm dual robot systems weld the grid structures of slewing tower cranes. In the centrally located headstock manipulator, workpieces up to 12 m in length are held in a rotating manner, while robots move laterally on floor tracks. Synchronization between the two robot controllers ensures strict compliance with the welding sequence. The swan's neck-shaped design of the welding torch, together with the high mobility of the wrist joint, permits the reliable circumferential weld of pipe connections in a single pass. All seams can be welded in the PB position.

Telescopic arms for mobile cranes

Telescopic arms for mobile cranes aren't just a welding challenge due to the use of fine-grained steels. Exact temperature control is essential for a good welding result. For this application, igm offers complete, turnkey fabrication lines from a single source, with plasma stations, trimming presses, special welding machines, and even conveyor systems and line control.

Other components of mobile cranes that can be welded automatically by igm robot systems include main frames, slewing superstructure, sliding outrigger posts, and lattice jibs for trussed beams. 

 



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igm Robotic Systems, Inc., W133 N5138 Campbell Drive, Menomonee Falls, WI 53051 USA, T +1 (262) 783-2720, F +1 (262) 783-2730, Mail: igmusa@igmusa.com
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