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Sliding bearing of anode disc for high rotational speed

A technology of sliding bearings and rotating anodes, which is applied in the direction of sliding contact bearings, rotating bearings, bearings, etc., can solve the problem that the power of driving equipment can no longer be accepted

Inactive Publication Date: 2011-01-12
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, higher rotational frequencies are required in future high-power X-ray tubes, and when the rotational frequency is greater than 200 Hz, the friction in the sliding bearing will increase in proportion to the increase in the rotational frequency, so that it is used to drive the rotation Anode drive device power is no longer acceptable

Method used

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  • Sliding bearing of anode disc for high rotational speed
  • Sliding bearing of anode disc for high rotational speed
  • Sliding bearing of anode disc for high rotational speed

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Embodiment Construction

[0014] figure 1 A prior art slide bearing for an anode disk is shown in cross section. The slide bearing is formed by a bearing shell 2 and an inner shaft 1 mounted in the bearing shell 2 . The inner shaft 1 forms, for example, a stationary bearing part, while the bearing shell 2 forms a movable bearing part. An anode disc is fixed on the rotatable bearing bush 2 . The inner shaft 1 is fixedly connected to an x-ray tube housing and can be cooled from the inside.

[0015] Between two concentrically arranged bearing parts 1, 2 there is a bearing gap 3 formed by the bearing bearing surfaces 5 of the two bearing parts 1, 2, for example with a gap width of about 20 microns, which is filled with A liquid metal such as gallium-indium-tin. The rotational speed-dependent wear in the bearing gap 3 limits the rotational frequency for the anode disk to below 200 Hz. A major advantage of plain bearings is the large-area contact between the bearing shell 2 and the inner shaft 1 by mean...

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Abstract

The present invention relates to a sliding bearing of a rotary anode for an X-ray tube. The sliding bearing comprises a fixed bearing element (1), wherein a plurality of rotary bearing elements (2, 4) are concentrically enclosed around the fixed bearing element (1) or disposed in the fixed bearing element (1); the bearing elements (1, 2, 4) have bearing support faces (5); a bearing clearance (3) filled with liquid medium is between the bearing support faces (5). The present invention further provides an X-ray tube with the sliding bearing and a computer X-ray chromatogram scanner. The sliding bearing of the present invention has the advantages that the sliding friction of the sliding bearing filled with liquid is obviously reduced when the rotational frequency is greater than 200 Hz, and good heat dissipation performance is maintained.

Description

technical field [0001] The invention relates to a sliding bearing for a rotating anode of an X-ray tube, which has a stationary bearing part on which an anode disk of an X-ray tube can be fastened. The invention furthermore relates to an x-ray tube and a computed tomography scanner with such a slide bearing. Background technique [0002] A plain bearing is a mechanical element or member used to enable sliding movement of a member on or in a bearing. Plain bearings differ from ball and rolling bearings in that the component and bearing slide past each other directly or only with a lubricating film. Therefore, generally speaking, sliding bearings are required to have excellent lubrication performance against sliding wear. The lubrication takes place via oil, grease, but also via soft metal bearings made of copper, bronze or tin or according to other self-lubricating principles. [0003] Slide bearings are also used to support the rotatable anode disk of an X-ray tube. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J35/10F16C33/10F16C37/00A61B6/03
CPCH01J2235/1086H01J2235/1046H01J35/101F16C17/18F16C33/109F16C17/02F16C2210/08H01J35/104
Inventor 简·埃森索恩马克·海恩克托马斯·奥尔恩多夫马克·奥登伯恩哈德·罗斯
Owner SIEMENS AG
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