Pit lifting frame for slitting loop

The utility model relates to the technical field of deep pit lifting frames, and discloses a deep pit lifting frame for a longitudinal shearing loop, which comprises a gate-type rack arranged in a deep pit of the longitudinal shearing loop, and the gate-type rack partially extends out of the deep pit of the longitudinal shearing loop; a driving motor is arranged at the top of the gate-type rack, an output shaft of the driving motor is connected with a rotating shaft, two chains are installed on the rotating shaft, a balancing weight is fixed to one end of each chain, and a lifting bearing frame is fixed to the other end of each chain. According to the pit lifting frame for the longitudinal shearing loop, the connecting transverse plate, the lifting bearing frame and the bracket can be driven to ascend and descend through the chain, when a worker needs to feed one end of an aluminum strip into a circle shear, the bracket ascends, the aluminum strip can be lifted, the falling force generated by the weight of th