Aiming at the problems existing in the process of head rope replacement of multi-rope friction hoist,a crawler traction head rope continuous replacement device was designed,which was “the old rope was suspended with the new rope,and the new rope was recycled with the old rope”.The hydraulic system was modeled and simulated by AMESim,and the prototype of rope changing device was manufactured according to the simulation results.The results show that the rope replacement speed of the head rope replacement device is stable at 0.59 m/s,which meets the efficiency requirements of head rope replacement.It can provide enough friction and clamping force to ensure the safety of rope changing process.In case of dangerous working conditions,the device can be protected with millisecond response speed.