The invention relates to the technical field of paper winding machines, in particular to a paper
winding machine protection device capable of effectively preventing stall. The device comprises a mounting frame, an annular groove is formed in the inner wall of the mounting frame, three evenly-distributed
speed reduction blocks are movably connected to the inner wall of the annular groove, damping holes are formed in the inner walls of the
speed reduction blocks, iron blocks are fixedly connected to the inner walls of the
speed reduction blocks, a rotating shaft is movably connected to the middle of the mounting frame, evenly-distributed sliding grooves are formed in the middle of the rotating shaft, and springs are fixedly connected to the inner walls of the sliding grooves. According to the paper
winding machine protection device capable of effectively preventing stall, through cooperative use of the speed reduction blocks and the damping holes, when a paper
winding machine rotates rapidly, the speed reduction blocks can be relatively fixed to the rotating shaft under the action of magnetic attraction force of electromagnets and the iron blocks, the
viscosity of magnetorheologicalfluid in the annular groove is increased at the moment, the
magnetorheological fluid can hardly pass through the speed reduction blocks and the damping holes, and therefore the stall prevention effectis achieved, the winding quality of the paper winding
machine is effectively prevented from being reduced, and the practicability is improved.