Speed adjustable magnetic eddy current coupling device

Abstract

The invention discloses a speed adjustable magnetic eddy current coupling device which comprises a rack, an input shaft, an output shaft, a first metal disc, a second metal disc, a first magnetic disc and a second magnetic disc, wherein a first pushing mechanism regulates the first metal disc to move along the input shaft in a left-and-right mode, a second pushing mechanism regulates the second metal disc to move along the output shaft in a left-and-right mode, the first pushing mechanism and the second pushing mechanism share the same structure and comprise two-way electromagnetic valves, sliding sleeve tubes, outer sleeve tubes and plane ball propellers, the two-way electromagnetic valves are fixed on the rack, the sliding sleeve tubes are fixed at output ends of the two-way electromagnetic valves, the sliding sleeve tubes and the outer sleeve tubes are an integrity, tail ends of the plane ball propellers are respectively connected with the sliding sleeves in a welded mode, an outer shell of each of the plane ball propellers is made of metal plates, and rolling balls capable of rotating in 360 degrees are arranged on the fixed support of the inner side of the metal plates which is opposite to the metal discs. The speed adjustable magnetic eddy current coupling device uses a more reasonable air gap distance regulation mechanism and an executive mechanism, and resolves the problem of 'unlubricated friction'of the propellers in the process of air gap distance regulation of the metal discs and the magnetic discs.

Description

technical field [0001] The invention belongs to the technical field of magnetic eddy current couplings, in particular to a speed-adjustable magnetic eddy current coupling. Background technique [0002] In real life, the drive shaft transmission system connected by a coupling is widely used. Almost industrial occasions and areas involving motor power transmission in life will use the drive shaft transmission technology of the coupling. At present, the couplings used in the mechanical field are mostly mechanical couplings and hydraulic couplings. The mechanical coupling is a rigid connection, and the mechanical force transmits the torque. During the installation process, due to the axial offset error, the load of the supporting original is increased, and the radial offset error will generate a sudden load and cause high-frequency vibration of the equipment, and the rigid connection will generate an impact load at the moment of starting. The speed regulation of the hydraulic ...

AI Technical Summary

Problems solved by technology

[0004] At present, the magnetic coupling coupling products with mature technology on the market, such as the related products of Magna Drives in the United States, have been used in the field of motor drive. It is a permanent magnetic coupling variable speed product with high-power models, but due to product Due to the limitations of its own structure and technical solutions, there are still many deficiencies in the technical performance of the product itself that need to be improved, mainly as follows: ①Using permanent magnetic coupling technology, due to the limitations of related working principles, the driving efficiency is low, and the size of the magnetic element and the air gap When conditions such as spacing, rotational speed and slip are determined, the magnetic torque power provided per unit volume is not high, and the heat generation is large, resulting in high-power speed-adjusting products being limited by technical bottlenecks

②The coupling governor itself cannot automatically adjust the air gap spacing, and it needs to be equipped with related devices to realize the adjustment of the air gap spacing. In the process of adjusting the gap, when the pushing part contacts the disk, there will be a " "Dry friction" effect, because the existence of longitudinal force will cause the vibration of the disk and cause overheating and wear of the driving parts

③The mechanical mechanism for adjusting the air gap spacing in the product has inherent technical requirements. For the magnetic turntables that appear in pairs, the gap adjustment mechanism mostly has the characteristics of multiple mechanisms, transmission gaps between mechanisms, and unstable execution reliability. These characteristics affect the Couplings are used in occasions that have high requirements for speed regulation accuracy

[0005] In view of the above technical problems, the present invention proposes a more stable and efficient speed-adjustable magnetic eddy current coupling, and solves the problem of "dry friction" of the thruster during the adjustment of the air gap between the metal disk and the disk, which can be improved and To overcome the shortcomings of the current permanent magnetic coupling coupling products and related technical bottlenecks, improve the application reliability and application occasions of the magnetic eddy current coupling, and provide a feasible core technical solution for the current permanent magnetic coupling speed control equipment market. And it can be applied to industrial production to meet the product needs of permanent magnetic coupling couplings in related fields

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