Fixed-point traction and sliding rail shifting lifting device and lifting construction method thereof

The invention discloses a fixed-point traction and sliding rail shifting lifting device. The device comprises a main lifting pulley block rail arranged at the edge of a rooftop and a matched glass carrier pulley block rail arranged on the ground. A glass carrier pulley block is arranged on the glass carrier pulley block rail. A lifting steel clamping plate device is arranged on the glass carrier pulley block and connected with a main lifting pulley block arranged on the main lifting pulley block rail through a main steel wire rope. Moreover, the main lifting pulley block is further connected with an auxiliary fixed pulley block I and a matched electric winch in sequence through the main steel wire rope; and meanwhile, the main lifting pulley block rail is further connected with an auxiliary fixed pulley block II and a matched traction winch in sequence through an auxiliary steel wire rope, wherein a plurality of steel wire rope arranging lines matched with the lifting steel clamping plate device are further a