Rotary extrusion type magnetorheological damper

Abstract

The invention discloses a rotary extrusion type magnetorheological damper. The damper comprises a damper body, and a main shaft stretch-out end, driving a disk to make linear extrusion movement along the axis, in the damper body is connected with a displacement shifting assembly. The displacement shifting assembly comprises a support fixed to the damper body, a supporting base is fixed to the support, one end of a lead screw penetrating into the supporting base is movably connected with a ball nut installed on a movable block, the movable block is fixedly connected with the main shaft stretch-out end, and the other end of the lead screw is connected with a connecting rod set making rotating movement. According to the rotary extrusion type magnetorheological damper, damping force is reduced in a displacement amplification mode, the adjusting range of the damping force is not invariable any more, and flexible adjustment can be performed according to the requirement of an excitation source. Besides, the rotary extrusion type magnetorheological damper has the advantages that the using amount of magnetorheological fluid is small, and sedimentation blocking is not likely to happen.

Description

technical field [0001] The invention relates to a magnetorheological shock absorber, in particular to a rotary extrusion type magnetorheological shock absorber, which belongs to the technical field of magnetorheological shock absorber. Background technique [0002] The magnetorheological shock absorber is a new type of shock absorber that uses the controllable fluid of magnetorheological fluid. Under different magnetic fields, the shear yield strength of the magnetorheological fluid is different, and the shear force that forces the magnetorheological fluid to flow is also different, that is to say, the damping force provided by the magnetorheological shock absorber is variable. Therefore, by controlling the external magnetic field, the purpose of adjusting the damping force of the magneto-rheological shock absorber can be achieved. It is precisely because the magneto-rheological damper has this important engineering application value that it has caused extensive research on...

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Problems solved by technology

However, this shear valve type magneto-rheological shock absorber mainly has the following disadvantages: first, the amount of magnetorheological fluid is large, but the magnetorheological fluid that actually produces the magnetorheological effect is very little, that is to say, the magnetorheological fluid The utilization rate of rheological fluid is not high; second, magnetorheological fluid is prone to sedimentation and clogging; third, the adjustment range of damping force is fixed and cannot be adjusted flexibly

The squeeze magneto-rheological shock absorber can provide a large damping force, the required amount of magnetorheological fluid is small, and the magnetorheological effect is more, and it is not easy to precipitate and block, but the squeeze magneto-rheological shock absorber The rheological shock absorber also has the disadvantage that the damping force adjustment range is fixed and cannot be adjusted flexibly

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