Abstract: The present invention is composed with a frame, a rotary drum, a rotor, and a turbination spring. The frame comprising a left upright board, a right upright board, and an upper bridging portion arranged on top of the left upright board and right upright board to define a chamber with front and back opening. The upper bridging portion comprises a first lifting lug coupled thereon. The frame comprises a second lifting lug arranged at a proper position thereof. The left upright board has a breaking frame having a foramen. An axis is arranged across the chamber at the center of the foramen. The axis is couple with a rotary drum that comprises a rescue cord circled therearound. The rotor is arranged on the left end of the rotary drum and comprises a bias component that is adapted to the foramen. The turbination spring is arranged between the right end of the rotary drum and the right upright board, so as to keep the rotary drum restoring to the axis.

Abstract: The present invention is composed with a frame, a rotary drum, a rotor, and a turbination spring. The frame comprising a left upright board, a right upright board, and an upper bridging portion arranged on top of the left upright board and right upright board to define a chamber with front and back opening. The upper bridging portion comprises a first lifting lug coupled thereon. The frame comprises a second lifting lug arranged at a proper position thereof. The left upright board has a breaking frame having a foramen. An axis is arranged across the chamber at the center of the foramen. The axis is couple with a rotary drum that comprises a rescue cord circled therearound. The rotor is arranged on the left end of the rotary drum and comprises a bias component that is adapted to the foramen. The turbination spring is arranged between the right end of the rotary drum and the right upright board, so as to keep the rotary drum restoring to the axis.