Double-layer permanent magnet type axial eddy current recoil and counter-recoil device

Abstract

The invention discloses a double-layer permanent magnet type axial eddy current recoil and counter-recoil device. The double-layer permanent magnet type axial eddy current recoil and counter-recoil device comprises a supporting mechanism, an eddy current damping mechanism and a counter-recoil mechanism. The eddy current damping mechanism comprises an inner-layer permanent magnet, an outer-layer permanent magnet and an outer-layer magnetic conductive block. Each of the inner-layer permanent magnet and the outer-layer permanent magnet is of an annular cylinder structure. The inner diameter of the outer-layer permanent magnet is larger than the outer diameter of the inner-layer permanent magnet, and the inner-layer permanent magnet and the outer-layer permanent magnet are coaxially arranged. The supporting mechanism provides supporting and moving guidance for the counter-recoil mechanism. A round pipe of the counter-recoil mechanism is located between the inner-layer permanent magnet and the outer-layer permanent magnet and moves relative to the inner-layer permanent magnet and the outer-layer permanent magnet. The device is high in damping coefficient, the suffered impact loads during work of a transmitting device can be buffered, the recoil displacement and the counter-recoil speed of the transmitting device can be effectively reduced, and the counter-recoil function is achieved.

Description

technical field [0001] The invention belongs to the field of electromagnetic braking, in particular to a double-layer permanent magnet type axial eddy current control device for retreating and re-advancing. Background technique [0002] The launching device is subjected to severe impact loads during the working process. In order to prevent structural damage during the launching process and realize recoil and reset functions, the retreating and re-advancing device plays a vital role. The retreating and re-advancing device can convert the impact load with a short action time and a large amplitude into a relatively long action time and a small amplitude gentle load. [0003] Spring buffers and hydraulic-pneumatic retractors are commonly used to cushion such shock loads. The spring buffer has a simple structure and is easy to maintain, but the spring cannot dissipate energy. The greater the impact load, the greater the impact during re-entry, and it is prone to fatigue fracture...

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is to provide a double-layer permanent magnet type axial eddy current control device to solve the problems of small damping coefficient and low working efficiency of the general eddy current control device

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