Double-tapered-angle magnetic liquid shock absorber on basis of first-order buoyancy principle

The invention discloses a double-tapered-angle magnetic liquid shock absorber on the basis of a first-order buoyancy principle, and belongs to the field of vibration of mechanical engineering. The problem that due to multiple structural problems, an existing magnetic liquid damping shock absorber cannot be applied to the engineering practice is successfully solved. The double-tapered-angle magnetic liquid shock absorber comprises a shell (1), a first permanent magnet (2), an upper end cover (3), magnetic liquid (4), a mass block (5), a second permanent magnet (6) and a lower end cover (7). When the exterior vibrates, the mass block (5) moves in a cavity, and the magnetic liquid (4) flows in a gap between the inner hole wall of the shell (1) and the mass block (5), so that the energy is absorbed, and the aim of reducing the vibration is achieved; first-order buoyancy formed by the first permanent magnet (2) and the second permanent magnet (6) in the magnetic liquid enables a frequency difference to be formed between the mass block (5) and the shell (1); and the vibration reduction efficiency is maximized.