An eddy current axial damper

Abstract

The invention discloses an eddy current axial damper. The eddy current axial damper comprises a screw, a nut, a fixed drum, an inner rotating drum and an outer rotating drum. The fixed drum sleeves the outer side of the screw. The inner rotating drum is connected with the nut and arranged between the screw and the fixed drum in a sleeving mode. Magnets are arranged on the periphery of the inner rotating drum, and a conductor pipe is arranged on the inner wall of the fixed drum. The outer rotating drum is connected with the nut and sleeves the outer side of the fixed drum. A conductor pipe is arranged on the inner wall of the outer rotating drum, and magnets are arranged on the periphery of the fixed drum. According to the eddy current axial damper, two sets of module connection are formedbetween the inner rotating drum and the fixed drum and between the outer rotating drum and the fixed drum, the sizes are not mutually affected, the parts can be independently designed, and modularizedproduction and combination are achieved. By means of multiple combination modes such as inner and outer rotation, inner rotation and outer rotation, the requirements for the damper size limitation, the damping force inertia force change mode and the heat dissipation efficiency are met. The structure comprises a movement conversion mechanism and an eddy current damping generator. The eddy currentdamping generator is free of the frictional loss, after the service life of the damper ends, only the movement conversion mechanism needs to be replaced, the eddy current damping generator can continue to be used, and therefore the life cycle cost is reduced.

Description

technical field [0001] The invention relates to the field of damping devices, in particular to an eddy current axial damper. Background technique [0002] The basic principle of eddy current damping is: when the conductor plate in the local magnetic field cuts the magnetic force line, an eddy current will be generated in the conductor plate, and the eddy current will generate a new magnetic field opposite to the direction of the original magnetic field, thus creating a gap between the original magnetic field and the conductor. It forms a damping force that hinders the relative movement of the two, and at the same time, the resistance effect of the conductor plate converts the kinetic energy obtained by the conductor plate into heat energy and dissipates it through eddy currents. If the conductor plate is connected with the vibrating structure, it can produce the effect of structural vibration reduction and energy consumption, and become an eddy current damper. Compared with...

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Problems solved by technology

[0003] In the existing eddy current axial damper, the part that generates eddy current damping is coupled with the transmission member, and the dimensions between the two are interfered with each other (for example, when more magnets are required, it will be limited by the length of the nut, when When using a larger-sized transmission component, the size of the magnet frame will also increase accordingly; it is difficult to meet the demand for a larger damping force in a smaller-sized eddy current axial damper), which brings new problems to design, production and assembly. many difficulties

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