Active control gas tilting pad bearing
An active control and bearing technology, which is applied in the direction of sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as the inability to guarantee the best working condition of tilting pad bearings, and achieve the purpose of suppressing journal vibration, improving rotation accuracy, and moving The effect of high sensitivity
Active Publication Date: 2021-11-19
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology
However, the thickness of the air film changes passively according to the load change, and it is in a passive working state, which cannot ensure that the tilting pad bearing remains in the best working condition
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[0030] In order to further illustrate the technical means and efficacy of the present invention to achieve predetermined invention, the following combined with the accompanying drawings and preferred embodiments, the specific embodiments, structures, features, and their effects in accordance with the present invention, detailed description:
[0031] Active control gas can be tilted bearing, such as Figure 1 to 8 As shown, including the bearing 1, including the journal 2 with the bearing 1, the bearing 1 includes a body 11, a flexible hinge shaft 12, a thrust hemisphere 13, a piezoelectric ceramic driver 14, a bolt 15, a porous material 16, and a cover 17 Wherein, the flexible hinge shaft 12 includes a shaft tile 121 and two flexible hinge mechanism 122; the body 11 is cylindrical, and 6 hinge chamber 111 is opened in the circumferential direction in the cylindrical surface of the body 11, the hinge chamber 111 and the inner surface of the body 11 pass The pass groove 112 is in com...
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The invention discloses an active control gas tilting pad bearing which comprises a bearing body and a journal matched with the bearing body, wherein the bearing comprises a body, a flexible hinge bearing bush, a thrust hemisphere, a piezoelectric ceramic driver, a bolt, a porous material and a cover plate, the flexible hinge bearing bush comprises a bearing bush body and two flexible hinge mechanisms; at least four hinge cavities are formed in the circumferential direction of the inner cylindrical surface of the body, and the hinge cavities are communicated with the inner surface of the body through through grooves; the flexible hinge mechanisms are placed in the hinge cavities; a cylindrical cavity communicated with each hinge cavity is further formed in the body, and a piezoelectric ceramic driver is placed in the cylindrical cavity; an air film gap is formed between the bearing bush body and the journal; The flexible hinge mechanisms are driven to move in the radial direction by controlling extension or shortening of the piezoelectric ceramic driver, then the radial displacement and the swing angle of the bearing bush body are controlled, so that active control over the gas film gap can be achieved.
Description
Technical field [0001] The present invention relates to the field of gas dynamic static pressure bearing, in particular, an active control gas can be tilted. Background technique [0002] The gas dynamic static pressure bearing has the advantages of high stiffness, high precision, high load capacity, and good damping characteristics. Under the action of external air supply, the bearing and the journal can remain completely lubricated. Due to the non-contact lubrication mode, there is only a small friction between the bearing and the journal, thereby extending the life of the bearing between the bearing and the journal. Gas dynamic stress bearing is widely used in high-precision machine bed spindle support, high precision gas float platform, electronic computer fault scanning machine and precision measurement instrument in medical equipment. [0003] The shaft of the gas dynamic pressure can be composed of 3-5 tiles, and the tile block is curved, and the tile can be rotated around...
Claims
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IPC IPC(8): F16C32/06F16C17/03F16C27/02
CPCF16C32/0644F16C32/0614F16C17/03F16C27/02
Inventor 张永涛史伟杰杨泽胡宇超
Owner QINGDAO UNIV OF SCI & TECH