CN102278371A - magnetic rolling bearing - Google Patents

magnetic rolling bearing Download PDF

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Publication number
CN102278371A
CN102278371A CN 201110200499 CN201110200499A CN102278371A CN 102278371 A CN102278371 A CN 102278371A CN 201110200499 CN201110200499 CN 201110200499 CN 201110200499 A CN201110200499 A CN 201110200499A CN 102278371 A CN102278371 A CN 102278371A
Authority
CN
China
Prior art keywords
magnetic
ring
rolling
bearing
rolling bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201110200499
Other languages
Chinese (zh)
Inventor
李慧
黎伟
汪久根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN 201110200499 priority Critical patent/CN102278371A/en
Publication of CN102278371A publication Critical patent/CN102278371A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a magnetic rolling bearing. The magnetic rolling bearing consists of an outer ring, an inner ring, a retainer, and a rolling body which is arranged in the retainer, wherein the inner ring is a magnetic inner ring; the rolling body is a magnetic rolling body; magnetic fluid, or lubricating grease containing magnetic granules is filled into a space enclosed by the outer ring, the magnetic rolling body and the magnetic inner ring; the magnetic inner ring is the magnetic inner ring enclosed by heterosexual magnetic poles of a plurality of arc-shaped magnets in an end to end mode, or an integral magnetic inner ring; and the magnetic rolling body is a rolling body made of a ferromagnetic material. When the magnetic rolling bearing works, the magnetic inner ring and the magnetic rolling body which do rotary movements take the magnetic fluid into a contact area to increase the lubricating effect; and due to the action of a magnetic force between the rolling body and the magnetic inner ring, the friction torque of the rolling bearing is slightly increased, but steadier, and the variation amplitude of the friction torque is reduced, so that the stability of the friction torque of the rolling bearing is good.

Description

The magnetic rolling bearing
Technical field
The present invention relates to a kind of rolling bearing, especially relate to a kind of magnetic rolling bearing.
Background technique
Rolling bearing is known in the art, and is a kind of important mechanical basic part, is widely used in national economy and Defence business every field.Existing bearing designs in use, and the phenomenon of the failure of rolling bearing generally shows as two kinds, and the one, bearing fatigue failure owing to insufficient lubrication, the 2nd, noise is arranged in the bearing operation.Bearing temperature is too high all can to influence bearing life with the bearing noise, and the reason that produces these faults is except design and assembling deficiency, be because in the bearing working process to a great extent, the lack of lubrication of bearing and bearing mainly show in the variation of bearing frictional torque the adaptive capacity deficiency of load change.The fluctuation of Frictional Moment for Rolling Bearings has determined the motion accuracy of rolling bearing supporting, influences the accurate control of movement parts position, is an important performance characteristic of bearing.In light of this situation, utilize the Lenz's law of magnet effect, existing bearing is improved, in the hope of obtaining a kind of lubrication effect significantly with to the well-adjusted bearing of load change.
Summary of the invention
The object of the present invention is to provide a kind of magnetic rolling bearing, change lack of lubrication and bearing frictional torque variation problem greatly that existing bearing exists, in the hope of obtaining the bearing that a kind of lubrication effect is remarkable and friction torque has good stability.
The technical solution used in the present invention is:
The present invention is made up of outer ring, inner ring, retainer and the rolling element that is installed in the retainer; It is characterized in that: described inner ring is a kind of magnetic inner ring; Described rolling element is a kind of magnetic rolling element; Be filled with magnetic fluid in the space that outer ring, magnetic rolling element and magnetic inner ring surround or contain the lubricating grease of magnetic-particle.
Described magnetic inner ring is magnetic inner ring or the all-in-one-piece magnetic inner ring that the synonyms pole end-to-end by many arc-shaped magnets surrounds.
Described magnetic rolling element is the rolling element of ferromagnetic substance.
The beneficial effect that the present invention has is:
1, brings magnetic fluid into contact area with rotating magnetic inner ring of axle or magnetic rolling element, increase lubrication effect.
2, owing to the magnetic force between magnetic rolling element and magnetic inner ring, the friction torque of magnetic rolling bearing has increase slightly, but more steady, and amplitude of variation reduces, thereby the good stability of bearing frictional torque.
3, between the bearing inner race of magnetic roller and steel and outer ring magnetic force is arranged, the friction torque of bearing is more stable.
Description of drawings
Fig. 1 is the magnetic bearing structural representation.
Fig. 2 is the part enlarged view of magnetic bearing structure.
Among the figure: 1, magnetic inner ring, 2, the magnetic rolling element, 3, the outer ring, 4, arc-shaped magnet, 5, magnetic fluid or contain the lubricating grease of magnetic-particle.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention is made up of outer ring, inner ring, retainer and the rolling element that is installed in the retainer; Described inner ring is a kind of magnetic inner ring 1; Described rolling element is a kind of magnetic rolling element 2; Be filled with magnetic fluid in the space that outer ring 3, magnetic rolling element 2 and magnetic inner ring 1 surround or contain the lubricating grease 5 of magnetic-particle.
Described magnetic inner ring is magnetic inner ring or the all-in-one-piece magnetic inner ring that the synonyms pole end-to-end by many arc-shaped magnets 4 surrounds.
Described magnetic rolling element 2 is rolling elements of ferromagnetic substance.
The present invention is an example with deep groove ball bearing 6208, and outer ring D is 80mm, and inner ring d is 40mm.Improve on this bearing basis, the inner ring of deep groove ball bearing has magnetic, and it is to be spliced by an all-in-one-piece magnetic inner ring or by seven arc-shaped magnets 4.Article seven, arc-shaped magnet 4 is distinguished end-to-ends, and connecting part magnetic is opposite, thereby surrounds bearing annular magnet inner ring 1.Magnetic rolling element 2 is the rolling balls made with ferromagnetic substance.Be filled with magnetic fluid in the space that magnetic inner ring 1, magnetic rolling element 2 and outer ring 3 surround or contain the lubricating grease 5 of magnetic-particle.During the work of magnetic rolling bearing, with angular velocity speed ω iRotate magnetic inner ring 1 or magnetic rolling element 2 with ω bSpeed rotation meeting bring magnetic fluid or the lubricating grease 5 that contains magnetic-particle into contact area, can there be magnetic force in the magnetic field that magnetic inner ring 1 and magnetic rolling element 2 produces to magnetic fluid or the lubricating grease 5 that contains magnetic-particle, thereby it is more even that oiling agent is distributed, and increases lubrication effect; Simultaneously because the magnetic force of 1 of magnetic rolling element 2 and magnetic inner ring, according to Lenz's law, the friction torque of rolling bearing has increase slightly, but it is more steady, amplitude of variation reduces, thereby the friction torque good stability of bearing, and, between the bearing inner race of roller and steel and outer ring magnetic force is arranged, the friction torque of bearing is more stable.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.

Claims (3)

1. magnetic rolling bearing is made up of outer ring, inner ring, retainer and the rolling element that is installed in the retainer; It is characterized in that: described inner ring is a kind of magnetic inner ring; Described rolling element is a kind of magnetic rolling element; Be filled with magnetic fluid in the space that outer ring, magnetic rolling element and magnetic inner ring surround or contain the lubricating grease of magnetic-particle.
2. according to a kind of magnetic rolling bearing described in the claim 1, it is characterized in that: described magnetic inner ring is magnetic inner ring or the all-in-one-piece magnetic inner ring that the synonyms pole end-to-end by many arc-shaped magnets surrounds.
3. according to a kind of magnetic rolling bearing described in the claim 1, it is characterized in that: described magnetic rolling element is the rolling element of ferromagnetic substance.
CN 201110200499 2011-07-18 2011-07-18 magnetic rolling bearing Pending CN102278371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110200499 CN102278371A (en) 2011-07-18 2011-07-18 magnetic rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110200499 CN102278371A (en) 2011-07-18 2011-07-18 magnetic rolling bearing

Publications (1)

Publication Number Publication Date
CN102278371A true CN102278371A (en) 2011-12-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110200499 Pending CN102278371A (en) 2011-07-18 2011-07-18 magnetic rolling bearing

Country Status (1)

Country Link
CN (1) CN102278371A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518666A (en) * 2011-12-31 2012-06-27 魏伯卿 Self-aligning permanent magnet magnetic bearing
CN102635637A (en) * 2012-04-16 2012-08-15 南京航空航天大学 Magnetic fluid lubricating bearing and manufacturing method thereof
CN102927133A (en) * 2012-11-06 2013-02-13 浙江大学 Rolling bearing with particle lubrication performance
CN103883622A (en) * 2014-03-05 2014-06-25 北京交通大学 Magnetic liquid cylindrical roller bearing
CN110630634A (en) * 2019-10-03 2019-12-31 张耕乾 Bearing with small friction and difficult deformation
CN111237339A (en) * 2020-01-14 2020-06-05 燕山大学 Magnetic rolling bearing capable of reducing balance radial force of gear pump and service life calculation method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2607467Y (en) * 2002-12-12 2004-03-24 上工股份有限公司 Magnetic fluid lubricating sliding bearing
EP1703151A2 (en) * 2005-03-18 2006-09-20 Denso Corporation Rolling bearing assembly having magnet to prevent brittle flaking
CN2898422Y (en) * 2006-03-28 2007-05-09 中国矿业大学 Hydrophobic magnetic lubicating bearing
JP2007113714A (en) * 2005-10-21 2007-05-10 Nsk Ltd Rolling device
CN101135342A (en) * 2007-07-20 2008-03-05 伍劲刚 Hydromagnetic bearing
CN101265945A (en) * 2007-03-13 2008-09-17 王平康 Magnetofluid bearing and method of manufacture
JP2008275037A (en) * 2007-04-27 2008-11-13 Nsk Ltd Rolling bearing and swing arm
CN202149141U (en) * 2011-07-18 2012-02-22 浙江大学 Magnetic rolling bearing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2607467Y (en) * 2002-12-12 2004-03-24 上工股份有限公司 Magnetic fluid lubricating sliding bearing
EP1703151A2 (en) * 2005-03-18 2006-09-20 Denso Corporation Rolling bearing assembly having magnet to prevent brittle flaking
JP2007113714A (en) * 2005-10-21 2007-05-10 Nsk Ltd Rolling device
CN2898422Y (en) * 2006-03-28 2007-05-09 中国矿业大学 Hydrophobic magnetic lubicating bearing
CN101265945A (en) * 2007-03-13 2008-09-17 王平康 Magnetofluid bearing and method of manufacture
JP2008275037A (en) * 2007-04-27 2008-11-13 Nsk Ltd Rolling bearing and swing arm
CN101135342A (en) * 2007-07-20 2008-03-05 伍劲刚 Hydromagnetic bearing
CN202149141U (en) * 2011-07-18 2012-02-22 浙江大学 Magnetic rolling bearing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518666A (en) * 2011-12-31 2012-06-27 魏伯卿 Self-aligning permanent magnet magnetic bearing
CN102635637A (en) * 2012-04-16 2012-08-15 南京航空航天大学 Magnetic fluid lubricating bearing and manufacturing method thereof
CN102927133A (en) * 2012-11-06 2013-02-13 浙江大学 Rolling bearing with particle lubrication performance
CN103883622A (en) * 2014-03-05 2014-06-25 北京交通大学 Magnetic liquid cylindrical roller bearing
CN110630634A (en) * 2019-10-03 2019-12-31 张耕乾 Bearing with small friction and difficult deformation
CN111237339A (en) * 2020-01-14 2020-06-05 燕山大学 Magnetic rolling bearing capable of reducing balance radial force of gear pump and service life calculation method

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C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20111214