Permanent magnetic automatic clutch for generator

Abstract

The invention discloses a permanent magnetic automatic clutch for a generator. The permanent magnetic automatic clutch comprises a clutch shell, a clutch disk, a slide key, magnetic steel, a positioning nut, a friction sheet and a slide block, wherein the clutch shell and the clutch disk form a clutch main body; the slide key is fixed on the clutch disk; force borne by the slide block is transmitted to the clutch disk; epoxy resin for the magnetic steel is stuck to the slide block; the friction sheet is stuck to the top of the slide block; and the magnetic steel, the friction sheet and the slide block are moving pieces, and play roles in jointing and separating in different working states. The permanent magnetic automatic clutch has a simple structure and is convenient to install; clutch generalization and standardization are easy to realize; the jointing and separation of the slide block and the clutch shell are controlled by using a strong magnetic material, and mechanical connection is replaced by magnetic connection; the slide block moves in a rail, so that the contact surface between the slide block and the clutch shell is ensured, and the service life of the clutch is prolonged; the jointing stability is enhanced; freeness from maintenance is realized; and work is safe and reliable.

Description

technical field [0001] The invention relates to a clutch, in particular to a permanent magnet automatic clutch for a generator. Background technique [0002] The clutch is a key component of power transmission between the engine and the generator of a dual-frequency generator set or a generator set with frequency conversion function. Its performance directly affects the power supply quality of the generator set and affects the function of electrical equipment. At present, there are two types of clutches for dual-frequency generator sets: one-way rotor type and centrifugal wedge type. In practical application, it is found that these two clutches are prone to jamming or "burning", broken springs and other failure phenomena. [0003] Analysis of the reasons for the failure of the one-way rotor clutch: First, the high temperature resistant aviation "Special 221" grease should be used to lubricate the work in the wedge gap. Since this grease is not easy to purchase, some users u...

AI Technical Summary

Problems solved by technology

[0003] Analysis of the reasons for the failure of the one-way rotor clutch: First, the high temperature resistant aviation "Special 221" grease should be used to lubricate the work in the wedge gap. Since this grease is not easy to purchase, some users use butter (calcium-based grease) instead, often High-temperature dilution leakage occurs, which reduces the lubrication effect; second, the rollers in the wedge-shaped gap rely on rolling friction to transmit the retention force between the core and the shell, which can easily cause the rollers, the core, and the shell to be stuck or "burned" at high temperature. The generator set loses the function of frequency conversion work; the third is that the five rollers of the one-way rotor clutch have uneven engagement during work, which easily damages the shell

[0004] Analysis of the cause of the failure of the centrifugal wedge clutch: First, the return spring is always working in the engaged state. If the working time is long, the spring will be fatigued, the elastic force will drop or break, and the wedge cannot be returned; the second is that the clutch is in a disengaged state. , the wedge is retracted to the center shaft of the clutch under the action of the return spring, and the return spring is still working, and there is also a drop in elastic force, which causes the wedge to malfunction; third, the special structure makes the movement track of the clutch wedge uncontrollable , resulting in partial friction, it is easy to make the return spring shake, accelerate the decline of the elastic force, and promote the aging and failure of the spring

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