The invention relates to a
magneto-rheological torsion
damper, which mainly comprises a
stator, a rotor, a spiral propulsion rod and a
shock absorber cylinder body, wherein the input end of the
magneto-rheological torsion
damper is connected with loading equipment via a coupler; the
stator is wound with
multiple stages of electromagnetic coils; a groove or a bulge matched with the rotor is processed on the outer wall of the
stator; a certain gap is formed between the outer wall of the stator and an inner sleeve; a bulge or groove matched with the stator is processed on the inner wall of a rotor cylinder; the propulsion rod with a spiral propulsion structure, the rotor and the spiral propulsion rod are mutually connected via a terminal pad; the
shock absorber cylinder body consists of an outer sleeve, a sealing bearing, a left cover plate and a right cover plate; a certain gap is formed between the
shock absorber cylinder body and the inner sleeve; and the gap between the stator and the shock absorber cylinder body as well as the gap between the shock absorber cylinder body and the rotor is full of
magneto-rheological fluid. According to the magneto-rheological torsion
damper disclosed by the invention, two working
modes of magneto-rheological fluid shearing and flowing are fully utilized, and the magneto-rheological torsion damper has the advantages of compact structure, big adjustable damping force and
wide dynamic range and can be widely applied to the occasion of
torsional vibration control.