Double-row rolling bearing with magnetic liquid seal and sealing method thereof
A technology for rolling bearings and magnetic fluids, which is applied to the sealing of bearing components, shafts and bearings, and engines. It can solve the problems of wear particle leakage and lubricating grease loss. The effect of the loss of lubricating oil
Inactive Publication Date: 2016-05-25
ZHEJIANG WANLI UNIV
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Problems solved by technology
[0003] In order to overcome the above disadvantages, the object of the present invention is to provide a magnetic liquid-sealed double-row rolling bearing and its sealing method in the field, so as to solve the technical problems that the existing similar bearings are prone to leakage of wear particles and loss of lubricating grease
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[0011] Now in conjunction with accompanying drawing, the present invention will be further described.
[0012] Such as figure 1 As shown, the magnetic fluid-sealed double-row rolling bearing includes an outer sleeve 4, an inner sleeve 9, two single dust-shield rolling bearings, an outer ring permanent magnet 5, an inner ring permanent magnet 1, and a magnetic liquid 2. Single dust-proof cover rolling bearing is made up of bearing outer ring 3, bearing inner ring 8, ball 6, dust-proof cover 7. The main points of its structure are: the double-row rolling bearing is two single-dust-shield rolling bearings installed between the outer sleeve 4 and the inner sleeve 9, and there is no dust-proof cover 7 at the opposite end of the two single-dust-shield rolling bearings. An outer annular permanent magnet 5 is arranged between the bearing outer rings 3 of two single-dust-shield rolling bearings, and an inner annular permanent magnet 1 is arranged between the bearing inner rings 8 of t...
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The invention relates to a magnetic liquid-sealed double-row rolling bearing and a sealing method. The magnetic liquid-sealed double-row rolling bearing is characterized in that two single-dust cover rolling bearings are installed between an outer sleeve and an inner sleeve and opposite ends of the two single-dust cover rolling bearings are free of a dust cover. An outer-ring-type permanent magnet is arranged between bearing outer rings of the two single-dust cover rolling bearings. An inner-ring-type permanent magnet is arranged between bearing inner rings of the two single-dust cover rolling bearings. Magnetic poles of the outer-ring-type permanent magnet and the inner-ring-type permanent magnet have opposite polarities. A magnetic liquid is injected in a space formed from the bearing outer rings, the bearing inner rings and the dust covers of the two single-dust cover rolling bearings. Under the action of a magnetic field force produced by a magnetic liquid, a lubricating film is formed between balls and the inner and outer rings so that bearing lubricating properties are improved, and under the action of the magnetic field force, the magnetic liquid stays in rotation gaps of the dust covers and the bearing inner rings and forms magnetic sealing. The magnetic liquid-sealed double-row rolling bearing has a low manufacture processing cost, realizes reliable sealing and avoids grinding particle leakage and lubricating grease loss. The magnetic liquid-sealed double-row rolling bearing is suitable for the various fields having high clean requirements.
Description
technical field [0001] The invention relates to a rolling bearing, which is a magnetic liquid-sealed double-row rolling bearing and a sealing method thereof. Background technique [0002] Bearing is a component that fixes and reduces the coefficient of friction in the process of mechanical transmission, and its application fields are quite extensive. However, depending on the application field, the requirements for bearings are also different. For example, in some industrial fields such as precision machinery, electronics, aerospace, high-purity chemistry, pharmaceuticals, and optomagnetics, a highly clean production and manufacturing environment is often required. Ordinary bearings are prone to leakage of wear particles and loss of lubricating grease during rotation. It is difficult to apply to these industries because of the loss problem. In order to solve this problem, the most adopted solution in the prior art is to change the material properties to reduce the generati...
Claims
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IPC IPC(8): F16C33/76F16C33/66F16J15/43
Inventor 王正良陈善飞
Owner ZHEJIANG WANLI UNIV