Large-travel portable rescue lifter

The invention relates to a large-travel portable rescue lifter. The traditional rescue equipment has large size and higher price. The large-travel portable rescue lifter comprises a rack board, a DC reducer motor, a worm wheel and worm reducer, a through winch, a falling preventing device, a rope clamping device, a handle and a safety hook, wherein one side of the rack board is provided with the DC reducer motor, and a worm wheel end of the worm wheel and worm reducer is fixedly connected with a main shaft on the other side of the rack board; the through winch is sheathed on the main shaft, and the top of the through winch is provided with the rope clamping device; and the falling preventing device, the handle and the safety hook are also arranged on the rack board. The large-travel portable rescue lifter can realize free lifting up and down so as to achieve dual functions of high-rise rescue and escape.