Steel reinforcement cage roll welding draw gear

The invention belongs to the field of building devices, and provides a steel reinforcement cage roll welding draw gear which comprises a draw trolley, a draw main shaft, draw plates and locking assemblies. The draw trolley is connected with the draw main shaft, and the draw plates are fixed at two ends of the draw main shaft through fixed elements. Each locking assembly comprises cylinder supports, locking cylinders, cylinder pull rods, eccentric wheels and locking supporting seats. The cylinder supports and the locking supporting seats are respectively fixedly arranged on two faces of the draw plates, and grooves are arranged in the locking supporting seats. The locking cylinders are fixedly arranged on the cylinder supports, and one ends of the cylinder pull rods are connected with the locking cylinders. The other ends of the cylinder pull rods penetrate through the draw plates, and in pivot connection with one ends of the eccentric wheels. The other ends of the eccentric wheels are connected in the grooves