JPH02104784U

JPH02104784U -

Info

Publication number: JPH02104784U
Application number: JP1322489U
Authority: JP
Priority date: 1989-02-07
Filing date: 1989-02-07
Publication date: 1990-08-21

Description

[Brief explanation of drawings]

第１図はこの考案のローターを装備した渦電流
式減速装置の一例における要部を示す断面図、第
２図はこの考案の実施によるローターの要部を拡
大して示す断面図、第３図ａはこの考案の渦電流
路構成部材の良導電性リングの一部拡大断面図、
第３図ｂは円筒部内周部分の一部拡大断面図、第
４図は渦電流の流れを示す説明図で、ａ図は従来
装置の場合、ｂ図は本考案装置の場合を示す、第
５図は本考案装置と従来装置を大型トラツクの減
速装置として使用した場合の制動経過時間とロー
ター温度および制動トルクの関係を示すグラフで
ある。１……ローター、２……円筒部、２―１……外
周部分、２―２……内周部分、３……良導電性リ
ング、４……良導電性スロツト、５……組立軸棒
、６……あり溝、７……回転軸、８……永久磁石
、９……磁石支持リング、１０……磁気シールド
ケーシング、１１……案内軸、１２……エアーシ
リンダ。 Fig. 1 is a sectional view showing the main parts of an example of an eddy current speed reduction device equipped with the rotor of this invention, Fig. 2 is an enlarged sectional view showing the main parts of the rotor according to the implementation of this invention, and Fig. 3 a is a partially enlarged sectional view of a highly conductive ring of the eddy current path component of this invention;
FIG. 3b is a partially enlarged cross-sectional view of the inner circumferential portion of the cylindrical portion, FIG. 4 is an explanatory diagram showing the flow of eddy current, FIG. FIG. 5 is a graph showing the relationship between the elapsed braking time, rotor temperature, and braking torque when the device of the present invention and the conventional device are used as deceleration devices for large trucks. 1... Rotor, 2... Cylindrical part, 2-1... Outer circumferential part, 2-2... Inner circumferential part, 3... Good conductive ring, 4... Good conductive slot, 5... Assembly shaft rod , 6...Dovetail groove, 7... Rotating shaft, 8... Permanent magnet, 9... Magnet support ring, 10... Magnetic shield casing, 11... Guide shaft, 12... Air cylinder.

Claims

[Scope of utility model registration request]

A magnet support ring, which has multiple permanent magnets around it so that the polarities of adjacent magnets are opposite to each other, is supported on a rotating shaft with a rotor fitted to the end, and the pole faces of the permanent magnets are aligned as required. In a speed reduction device that is opposed to the cylindrical part of the rotor with an air gap and equipped with a control mechanism that controls eddy currents generated in the rotor by a magnetic circuit of permanent magnets, the outer peripheral part of the cylindrical part of the rotor is configured integrally with the rotor main body, A plurality of ring-shaped thin plates made of high magnetic permeability material are insulated and laminated, and conductive rings with outer surfaces inclined in the centripetal direction are applied to both ends of the ring-shaped thin plates. A well-conductive slot is fitted into a plurality of grooves in the axial direction provided, and an inner circumferential portion in which an eddy current path is formed by the ring and slot is assembled inside the outer circumferential portion.
A rotor of an eddy current reduction device with a retaining ring attached to the outer end surface of the outer periphery.