Welding gantries and column&boom systems find their use in welding of large parts, such as steel constructions, crane girders, side-sills of road and rail vehicles and large tanks. The choice of the most suitable machine construction, size and equipment depends not only on the dimensions of seamed parts but also on the layout of workstations, manipulation space etc. and it is always necessary to carry out a detailed technical assessment to choose the best solution.
These are most often used for welding of rotary vessels (combined with roller positioners RB), when combined with travel they are also suitable for longitudinal welding of large steel constructions.
The column is fixed to the workshop floor or the access platform for travel along a rail track. The motor and chain driven vertical movement of the arm is equipped with safety mechanism.
The arm (programmable linear axis) with a universal flange at the front for fixing of auxiliary carriage with a welding head
Dimensions (height x length of the arm) min 1x1, max. 5x4 m
Standard equipment with AC-servo motor with feedback for longitudinal travel with possible extension by other actuated or non-actuated supports for the movement of welding torches:
Workpieces are set along the travel track from one (boom is fixed on the upper column flange) or both sides (column is fitted with a bearing for manual rotation of boom with pneumatic arrest in 2-3 positions).
The supporting column and the travel track are robust steel welded constructions, the boom and the beam of vertical travel are made of steel or aluminium profiles. For linear travel, ball runs and geared racks are used. Optionally, we offer a rotary head for program-controlled or manual torch rotation along the vertical axis.
It is mainly used for welding of large steel structures, where the frame with two supporting sides ensures better system rigidity even when more welding torches are used. Welded workpieces are set into jigs located between travel rails of the manipulator. One rail is fitted with a geared rack, the other serves as a supporting track for the second side.
The supports (usually 2 or 4 pcs) are hung to the top beam of the frame or to both sides (horizontally) depending on the specific construction.