The lifting mechanism of the roll changing device of vertical rolling mill in rod and wire production line generally adopts the worm gear and worm gear driven by motor. When the vertical stand is lifted and lifted, the damage of the device is easy to occur.To this end, we have developed and actually put into the vertical frame lifting control and protection system, the system has the following functions: the frame operation without jam resistance, the frame can operate normally;When the frame is stuck, the lifting motor torque limit plays a role, and the lifting device will not bear the impact load exceeding the set range, so as to protect the equipment from damage, and prompt the operator to check the site and mechanical equipment at the same time.

Typical applications: Bolt Shaogang big bar line, bar line.