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Magnetic fluid double suspension driving and driven radial bearing

A radial bearing, active and passive technology, applied in the direction of bearings, bearing components, shafts and bearings, etc., can solve the problem of low bearing capacity, and achieve the effect of improving bearing capacity, reducing temperature rise and thermal deformation, and high adjustment accuracy

Active Publication Date: 2017-05-10
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its carrying capacity is relatively low, and the coil is energized to generate heat. To make it work normally, it needs to be equipped with a circulating cooling system

Method used

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  • Magnetic fluid double suspension driving and driven radial bearing
  • Magnetic fluid double suspension driving and driven radial bearing
  • Magnetic fluid double suspension driving and driven radial bearing

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0017] A magnetic fluid double suspension active and passive radial bearing according to an embodiment of the present invention includes two supporting systems of electromagnetic suspension and hydrostatic pressure. Such as Figure 1-7 As shown, the static pressure support system is mainly composed of the rotary shaft 7 and the hydrostatic support pad 12 . A gap of 30 to 50 μm is formed between the static pressure back-up pad 12 and the rotary shaft 7 . The electromagnetic levitation support system is mainly composed of a stator 10, an enameled wire 11, a magnetic sleeve 25, and a rotary shaft 7. The rotary shaft 7 and the magnetic sleeve 25 are interference fit.

[0018] The bearing base is processed with an annular groove 40 and an annular groove 41 . The annular groove 40 is used to fix the stator 10 . The stator 10 is made of laminated multi-layer si...

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Abstract

The invention discloses a magnetic fluid double suspension driving and driven radial bearing. The magnetic fluid double suspension driving and driven radial bearing comprises an electromagnetic suspension supporting system and a liquid static pressure supporting system. The two supporting systems are axially arranged in parallel along a rotary shaft, wherein the electromagnetic suspension supporting system comprises a stator and a concentrating flux sleeve, an enamelled wire winds the stator, the stator is formed by laminating a plurality of layers of silicon steel sheets, eight magnetic poles which are arranged by way of NSSNNSSN are uniformly distributed on the stator, every two adjacent magnetic poles form a magnetic pole pair, and each of the magnetic pole pairs and the concentrating flux sleeve form a flux loop; four static pressure supporting cavities are uniformly formed in the liquid static pressure supporting system in the circumference, and C-shaped return chutes are processed among the static pressure supporting cavities to be able to lead returned oil to one side of the electromagnetic suspension supporting system so as to further cool the magnetic poles and the enamelled wire. The bearing disclosed by the invention can integrates the advantages of the electromagnetic suspension supporting system and the liquid static pressure supporting system and can increase the bearing capacity and the rigidity of the bearing to a great extent without independently arranging an auxiliary supporting and circular cooling system, so that the adjusting capacity and precision of the bearing system are improved.

Description

technical field [0001] The invention relates to the design field of sliding bearings, in particular to a magnetic fluid double-suspension active and passive radial bearing with heavy load, high speed, high rigidity and high control precision. Background technique [0002] Hydrostatic bearings have the advantages of good radial stiffness, high positioning accuracy, and good vibration resistance, so they have been widely valued and widely used. However, in the case of high power, heavy load and high speed operation, the friction power of the hydrostatic bearing is very large, and it is easy to cause large thermal deformation of the bearing due to excessive temperature. The so-called magnetic bearing is a bearing that uses magnetic attraction and repulsion to support the rotation, also called magnetic suspension bearing. Its advantages are small torque, good for high-speed rotation, can be used in vacuum, wide temperature range, low noise, long life, no pollution caused by lub...

Claims

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Application Information

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IPC IPC(8): F16C32/04F16C37/00
CPCF16C32/0402F16C37/005
Inventor 赵建华张斌王强陈涛刘竟成高殿荣
Owner YANSHAN UNIV
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