The utility model discloses a
temperature control release device for a fire resisting
shutter of a large-torque roller structure, which comprises a fixed plate, a
temperature control release device body is arranged on the fixed plate, a
steel rope is arranged on the
temperature control release device body in a penetrating manner, a grasping ring is arranged on the
steel rope, a mounting seat is detachably arranged on the
steel rope, and a
handle is arranged on the mounting seat. Through holes are symmetrically formed in the positions, corresponding to the steel
rope, of the mounting base, a through groove is formed in the mounting base, a
rapping bar is arranged in the through groove, a roller body is arranged on the
rapping bar and corresponds to the steel
rope, and a groove is formed in the position, corresponding to the steel
rope, of the roller body. The
rapping bar with the roller body is adjusted relative to the position of the through groove, the steel rope pulls and drives the rapping bar with the roller body to be adjusted relative to the through groove in a lifting mode, prying operation and efficient opening and closing of the external
brake assembly are achieved, and the opening and closing efficiency is improved.