Ultra-magnetic telescopic driver special for oil membrane bearing

A technology of giant magnetostrictive and giant magnetostrictive rods, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, bearing components, shafts and bearings, which can solve the problem of low adjustment accuracy and slow response speed and other problems to achieve the effect of eliminating frequency doubling, wide static adjustment range and good dynamic response

Inactive Publication Date: 2009-07-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the controllable extrusion oil film bearing has obvious vibration reduction effect, its adjustment accuracy is not h...

Method used

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  • Ultra-magnetic telescopic driver special for oil membrane bearing
  • Ultra-magnetic telescopic driver special for oil membrane bearing
  • Ultra-magnetic telescopic driver special for oil membrane bearing

Examples

Experimental program
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Embodiment Construction

[0022] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0023] see figure 2 , The giant magnetostrictive driver dedicated to the oil film bearing includes a base 10 , a casing 2 and an upper cover 6 . It is characterized in that the base 10 is a magnetically conductive base, the outer shell 2 is a magnetically conductive shell, and the upper cover 6 is a non-magnetic upper cover; a giant magnetostrictive rod 9 is placed at the center of the inner cavity of the outer shell 2 , the lower end of which is supported on the base 10, while the upper end is in close contact with a magnetically conductive sealing cover 4; an annular cavity formed between the shell 2, the base 10, the giant magnetostrictive rod 9 and the magnetically conductive sealing cover 4 is placed in an A magnetically conductive coil frame 7, on which a coil is wound; on the magnetically conductive sealing cover 4, a support block 5 is ...

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PUM

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Abstract

The present invention relates to a film bearing exclusive use giant magnetostrictive driver which comprises a magnetic base plate, a magnetic outer housing, a giant magnetostrictive rod, a coil framework, a exciter coil, a bias coil, a magnetic cover gasket, a upper cover, fastening screws and supporting block. The invention comprises the following steps: measure bearing film gapping place by using current vortex displacement sensor, adjust driver output displacement by adjusting power supply current of driver to realize static state and dynamic adjustment of film gapping place and reach target of enhancing rotate precision and stability of film bearing.

Description

technical field [0001] The invention relates to a special giant magnetostrictive actuator (Giant Magnetostrictive Actuators, GMA) for an oil film bearing. Background technique [0002] Traditional oil film bearings have good bearing capacity and long life, and are widely used in metallurgy, electric power, mining, chemical and machinery industries, but their low rotation accuracy and low stability restrict their application in some fields requiring high precision . Aiming at this problem existing in traditional oil film bearings, literature [1-2] proposed controllable extrusion oil film bearings, such as figure 1 . Its working principle is to push the oil film outer ring to move axially through the pressure difference generated by the high and low pressure oil chamber, and change the bearing oil film gap and effective load-bearing length to improve the dynamic characteristics of the bearing. Although the controllable extrusion oil film bearing has obvious vibration reduct...

Claims

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Application Information

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IPC IPC(8): H02N2/02F16C33/02
Inventor 马柯达付亚琴曹珍王琦吴超王文李宝福
Owner SHANGHAI UNIV
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