Permanent magnetic levitation auxiliary bearing
An auxiliary bearing and magnetic suspension technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of magnetic suspension bearing application limitation, easy wear, increased energy consumption, etc., to achieve simple structure, reduce pressure, and strong support stiffness. Effect
Active Publication Date: 2015-12-09
ANSHAN GANGFENG FAN
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Problems solved by technology
[0002] At present, the commonly used bearings are mechanical rolling or sliding bearings. These bearings have rolling friction and sliding friction, which are easy to wear and increase energy consumption. In order to eliminate friction, magnetic suspension bearings have appeared, and the key problem to be solved by magnetic suspension bearings is Rotation accuracy and support rigidity, in the case of light load, such as electricity meter and watch industry, magnetic suspension bearings have been widely used
However, in the case of heavy load, the application of magnetic suspension bearings is greatly restricted.
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[0015] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0016] See figure 1 , is a structural representation of the present invention. A permanent magnetic levitation auxiliary bearing of the present invention includes 2 inner magnetic groups and 2 outer magnetic groups arranged symmetrically and opposite to each other on the shaft sleeve 9, wherein the inner magnetic group consists of ring-shaped magnetic groups that are sequentially arranged radially from the inside to the outside. The inner magnetic shoe 8, the inner magnetic ring 7, the wedge-shaped inner magnetic shoe 6 and the roller 5 are composed, and the wedge-shaped inner magnetic shoe 6 and the roller 5 are inclined inward toward one end of the symmetrical center; the outer side of the inner magnetic group is axially fixed by a nut 10 , a special metal ring 1 is set at the symmetrical center of the two inner magnetic groups, and the outer m...
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The invention relates to a permanent magnetic levitation auxiliary bearing which comprises two inner magnetic groups and two outer magnetic groups which are symmetrically and oppositely arranged on a shaft sleeve. Each inner magnetic group is composed of an annular inner magnetic solid boot, an inner magnetic ring, a wedge-shaped inner magnetic solid boot and a cylindrical roller which are sequentially arranged from inside to outside in the radial direction. The outer magnetic groups are fixed to the outer sides of the inner magnetic groups through special metal rings in the radial direction. Each outer magnetic group is composed of a wedge-shaped outer solid boot, an outer magnetic body and an annular outer magnetic solid boot which are sequentially arranged from inside to outside in the radial direction. An annular gap is reserved between each wedge-shaped outer magnetic solid boot and the corresponding cylindrical roller. The radial magnetization direction of the inner magnetic rings is opposite to that of the outer magnetic rings. The permanent magnetic levitation auxiliary bearing is in a magnetic levitation state when lightly loaded and has no mechanical friction. On the condition of heavy load, the outer magnetic groups and the inner magnetic groups are in rolling connection with the cylindrical rollers, and the bearing still has the high convolution precision and high bearing strength; in addition, due to the repelling force of the magnetic effect, the pressure of the cylindrical rollers on the wedge-shaped outer magnetic solid boots is greatly reduced, and rolling friction force between the cylindrical rollers and the wedge-shaped outer magnetic solid boots is greatly reduced.
Description
technical field [0001] The invention relates to a magnetic suspension bearing, in particular to a permanent magnetic magnetic suspension auxiliary bearing. Background technique [0002] At present, the commonly used bearings are mechanical rolling or sliding bearings. These bearings have rolling friction and sliding friction, which are easy to wear and increase energy consumption. In order to eliminate the friction phenomenon, magnetic suspension bearings have appeared, and the key problem to be solved by magnetic suspension bearings is Rotation accuracy and support rigidity, in the case of light load, such as electricity meter and watch industry, magnetic suspension bearings have been widely used. But in the case of heavy load, the application of magnetic suspension bearing is greatly restricted. Contents of the invention [0003] The invention provides a permanent magnetic magnetic levitation auxiliary bearing, which is in a magnetic levitation state under light load, a...
Claims
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IPC IPC(8): F16C32/04
Inventor 张辛衡李成林战阳张寅啸
Owner ANSHAN GANGFENG FAN
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