| 摘要 |
A radial permanent magnetic suspension bearing, comprising: a horizontal shaft (2), a support bearing (4), and a radial permanent magnet suspension bearing (3); the permanent magnetic suspension bearing (3) comprises a stator pull-push magnet (31) disposed on a stator casing (1) via a permeability magnetic substrate (322), and a rotor pull-push magnet (32) disposed on the horizontal shaft (2) correspondingly via an annular permeability magnetic substrate (322), having a radial gap and forming an axial pull-push magnetic circuit with the stator pull-push magnet (31); wherein the rotor pull-push magnet (32) consists of two or more annual permanent magnets axially and closely fitting, with magnetic poles alternately arranged in the axial direction; the stator pull-push magnet (31) consists of two or more annular permanent magnets axially and closely fitting, with magnetic poles alternately arranged in the axial direction, disposed over the horizontal panel where the axle center of the horizontal shaft (2) is located, and being symmetrical about the perpendicular bisection plane of the horizontal shaft. The bearing has a simple structure and greatly reduces energy consumption, without wear or bearing maintenance. |
| 主权项 |
1. A radial permanent magnetic suspension bearing having micro-friction or no friction of pivot point, comprising a support bearing as pivot point disposed on a horizontal shaft, and a permanent magnetic suspension bearing disposed on the horizontal shaft and spaced from the support bearing by an axial distance, wherein
the permanent magnetic suspension bearing comprises a stator pull-push magnet disposed on a stator casing via a permeability magnetic substrate, and a rotor pull-push magnet disposed on the horizontal shaft correspondingly via a annular permeability magnetic substrate, having a radial gap and forming an axial pull-push magnetic circuit with the stator pull-push magnet; wherein the rotor pull-push magnet consists of two or more annual permanent magnets axially and closely fitting, with magnetic poles alternately arranged in the axial direction; wherein the stator pull-push magnet consists of two or more partial annular permanent magnets axially and closely fitting, with magnetic poles alternately arranged in the axial direction, disposed over the horizontal panel where the axle center of the horizontal shaft is located, and being symmetrical about the perpendicular bisection plane of the horizontal shaft; and wherein the partial annular permanent magnets and the annular permanent magnets, which are located at a same axial location and corresponds to each other in the up-down direction, have opposite polarities; and the radial gap is within an effective range of magnetic force of the two pull-push magnets; the permeability magnetic substrate of said stator pull-push magnet matches with the partial annular permanent magnets constituting said stator pull-push magnet in the circumferential direction;
a complementary annular member, which is complementary to a partial annular member constituted by the stator pull-push magnet and the permeability magnetic substrate thereof to form a annular cylinder, is made of non-magnetic material. |
