[0020] A magnetic liquid vibration damping device, which includes a non-magnetic shell 2, a magnetic liquid 3, a permanent magnet 4, a nut 5, an end cover 6, a bolt 7, a screw 9, a gasket 10 and an O-ring 11; the above parts the connection between:
[0021] Put the permanent magnet 4 into the cavity of the non-magnetic shell 2, and fix the end cover 6 with the O-ring 11 on one end of the non-magnetic shell 2 with the bolt 7 and the nut 5;
[0022] Fill the cavity of the non-magnetic shell 2 with magnetic liquid 3 through the threaded hole 8, and seal it with screws 9 and gaskets 10.
[0023] The inner diameter of the cavity of the non-magnetic shell 2 is 30 mm, and the diameter of the permanent magnet 4 is 13.5 mm.
[0024] The length of the non-magnetic shell 2 is 60 mm, and the length of the permanent magnet 4 is 18 mm.
[0025] The permanent magnet 4 is a cylinder, and four through holes are evenly distributed axially in the cylinder. The diameter of each through hole is...
[0031] The difference between Embodiment 2 and Embodiment 1:
[0032] The inner diameter of the cavity of the non-magnetic shell 2 is 30 mm, and the diameter of the permanent magnet 4 is 24 mm.
[0033] The length of the cavity of the non-magnetic shell 2 is 60 mm, and the length of the permanent magnet 4 is 45 mm.
[0034] The permanent magnet 4 is a cylinder, and 6 through holes are evenly distributed axially in the cylinder. The diameter of each through hole is 3.6mm.
[0035] The magnetic fluid 3 is a water-based magnetic fluid.
[0037] The difference between Embodiment 3 and Embodiment 1:
[0038] The inner diameter of the cavity of the non-magnetic shell 2 is 40 mm, and the diameter of the permanent magnet 4 is 24 mm.
[0039] The length of the cavity of the non-magnetic shell 2 is 60 mm, and the length of the permanent magnet 4 is 36 mm.
[0040] The permanent magnet 4 is a cylinder, and 8 through holes are evenly distributed axially in the cylinder. The diameter of each through hole is 3.6mm.
[0041] The magnetic fluid 3 is an oil-based magnetic fluid.
[0042] The invention is suitable for local vibration reduction of many longer objects (such as solar sails, satellite antennas, etc.) in space vehicles.
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