A variable damping permanent magnet eddy current damper

Abstract

The invention discloses a variable damping permanent magnet eddy current retarder. The variable damping permanent magnet eddy current retarder comprises a displacement-eddy current generating assembly, a phase control assembly, a fixing supporting assembly and a positioning-dead-locking assembly, wherein the phase control assembly comprises a supporting phase guide rail, a plurality of driven gears, a driving wheel and a rack, wherein the plurality of driven gears, the driving wheel and the rack are sequentially arranged on the supporting phase guide rail and are meshed with one another; a phase sliding groove is formed in the bottom of the supporting phase guide rail, two limiting groove holes are formed in the bottom surface of the phase sliding groove, the displacement-eddy current generating assembly comprises a conductor plate and a plurality of permanent magnets; and an unlocking sliding block is arranged on at least one side of the conductor plate, the magnetizing directions ofthe plurality of permanent magnets are arranged according to the Halbach array, the positioning-dead-locking assembly comprises a limiting travel guide rail and a clamping and tenon device, a travel sliding groove is formed in the inner side of the limiting travel guide rail, and the clamping and tenon device can realize locking and unlocking of the limiting groove holes through the movement of the unlocking sliding block. According to the variable damping permanent magnet eddy current retarder, the problem that the forward stroke and the reverse stroke of the linear permanent magnet eddy current retarder need different damping, and energy can be more reasonably and efficiently distributed.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic braking, and in particular relates to a variable damping permanent magnet electric eddy current damper. Background technique [0002] According to the law of electromagnetic induction, when the conductor material and the magnetic field move relative to each other, an eddy current will be induced in the conductor, and the eddy current will excite an induced magnetic field. The role of the induced magnetic field is to hinder the relative movement between the conductor and the main magnetic field. A damping force (braking force). And the conductor material has resistance, and the eddy current will be dissipated in the form of heat energy. The eddy current damper is an inductive energy dissipation device based on the above principle. [0003] Some buffer braking devices often require different damping for positive and negative strokes, and less damping is required for re-entry. The existing...

AI Technical Summary

Problems solved by technology

The existing permanent magnet eddy current damper is difficult to adjust the damping of different strokes synchronously to better distribute and utilize energy

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