The invention is suitable for the technical field of
welding equipment, and provides a shearing
machine shell
welding rotating device which comprises a supporting frame, a lifting plate is slidably connected to one side of the supporting frame, and fixing plates are symmetrically fixed to the two ends of the lifting plate. According to the scheme, the lifting mechanism and the transposition mechanism are arranged, the
dead weight of the shell is decomposed into multiple sections of
rope traction force through cooperative load reduction of a movable
pulley block and balancing weights in the lifting mechanism, the actual load of the lifting mechanism is greatly reduced, the balancing weights are arranged on the two sides of a lifting plate, the gravity of the shell part is counteracted through the lever principle, and the weight of the shell part is reduced. The driving
energy consumption is further reduced, mechanical fatigue is restrained, a worm and
gear transmission structure in the indexing mechanism is combined to directly drive the shell to rotate around the vertical shaft, secondary clamping or manual intervention is not needed, the rotation angle can be automatically locked through the inherent self-locking characteristic of a worm and gear, the position of the shell is still kept fixed even if the
machine is
shut down or powered off, and the service life of the shell is prolonged. And angle change caused by vibration or external force in the
welding process is avoided.