Rope unwinding auxiliary device and hoist rope mounting or replacing system

The invention discloses a rope unwinding auxiliary device. The device comprises at least two misaligned and axially-parallel friction wheels, wherein the friction wheels are arranged in sequence, at least two wheel grooves are formed in the circumferential direction of the friction wheels, and steel wire ropes enter one wheel groove in one side of the previous friction wheel in a winding mode, then are wound around one wheel groove of the adjacent rear friction wheel, then are wound back around the other wheel groove of the previous friction wheel, and finally leave from the wheel groove on the other side of one friction wheel in a winding mode. The novel rope unwinding auxiliary device comprises at least two misaligned and axially-parallel friction wheels, a flat belt is sequentially wound around the friction wheels, and only contact with each friction one time. The invention further discloses a traction rope mounting or replacing system comprising the rope unwinding auxiliary device.According to the device,