Insulation lifting device

The invention relates to an insulation lifting device. The insulation lifting device comprises insulation square pipes, hook hanging plates, movable connecting plates, springs, pulleys, a traction rope and an operation platform; two insulation square pipes are provided and arranged in parallel; a connecting shaft is arranged between the two insulation square pipes; the hook hanging plates are connected to the upper ends of the two insulation square pipes; two movable connecting plates are arranged between the two hook hanging plates, and are rotationally connected between the hook hanging plates through rotating shafts; one ends of the two movable connecting plates are connected with one ends of the springs; the other ends of the springs are fixed on the insulation square pipes; the pulleys are arranged at the other ends of the two movable connecting plates; the traction rope is bypassed through the pulleys; one end of the traction rope is connected with the operation platform; and theother end of the tractio