Magnetorheological fluid damper with active heat dissipation function

Abstract

The invention discloses a magnetorheological fluid damper with an active heat dissipation function, and belongs to the technical field of dampers. According to the magnetorheological fluid damper, through arrangement of a linkage rack, a supporting rotating shaft and a linkage gear, when the damper works, movement of a piston head can enable the polarity of the end, close to a thin-skin sealing sleeve, of a driving and adjusting magnet to continuously turn, so that the direction of the magnetic acting force between the driving and adjusting magnet and an embedded magnet is continuously changed, then the end, in contact with a magnetorheological fluid, of a heat dissipation rod can continuously move to the outside of a cylinder body and is in direct contact with air with a relatively low external temperature, then heat dissipation can be actively carried out, the heat dissipation efficiency of the damper is greatly improved, and the damper is prevented from being damaged due to temperature sensing; and when the damper is in a working state for a long time, an elastic balloon can be heated to expand, and a refrigerating ball is extruded into water in an annular cavity, so that a refrigerating effect is provided based on the characteristic that a large amount of heat can be absorbed when saltpeter is dissolved in the water, and then the heat dissipation efficiency of the damper can be further improved.

Description

technical field [0001] The invention relates to the technical field of dampers, in particular to a magneto-rheological fluid damper with an active heat dissipation function. Background technique [0002] The damper is a device that provides movement resistance and consumes movement energy. The magnetorheological fluid damper is a damper with magnetorheological fluid as the damping medium. Magnetorheological fluid is a new type of fluid with controllable fluidity. It is a branch of smart materials that is more active in research. It exhibits low-viscosity Newtonian fluid characteristics when there is no external magnetic field, and it exhibits high-viscosity and low-fluidity Bingham fluid when an external magnetic field is applied. There is a corresponding relationship between the viscosity of the liquid and the magnetic flux. , this conversion has low energy consumption, is easy to control, and responds quickly. [0003] During the use of the damper, the friction between th...

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Problems solved by technology

[0003] During the use of the damper, the friction between the internal damping medium and the rod body and the piston head will generate a lot of heat. Most of the existing magnetorheological fluid dampers rely on the heat transfer effect of the cylinder material for passive heat dissipation. , the heat inside the cylinder cannot be dissipated in time, which may easily lead to damage to the damper, especially when the damper is used for a long time, the internal temperature of the cylinder is too high, which will reduce the service life of the damper

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