Title:
ROTATING ANODE X-RAY TUBE DEVICE AND X-RAY PHOTOGRAPHY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/034632
Kind Code:
A1
Abstract:
An objective of the present invention is to provide a pre-stress structure in a rotating anode x-ray tube device whereby no delay is present, and no excessive load is incurred, due to necessary pre-loading, which is to say, thermal conduction. A rotating anode x-ray tube device comprises a cathode and a rotating anode. The rotating anode further comprises: rotating bodies (8a, 8b) which rotate with an anode target; a bearing unit (10) for lubricating the rotation of the rotating bodies; and a fixed body which rotatably supports the rotating bodies via the bearing unit (10). The bearing unit (10) further comprises: a plurality of bearings (13, 17) which are positioned along the axial directions of the rotating bodies; and pre-load structures (14, 16, 207, 208) which are individually disposed upon each bearing. With respect to each respective bearing, each respective pre-load structure imparts a pre-load quantity to the bearings which is lower than loads which are imparted to the bearings from the rotating bodies, with the directions of the axes of rotation of the rotating bodies matching the direction of gravity.
Inventors:
OKAMURA HIDEFUMI (JP)
Application Number:
PCT/JP2013/072801
Publication Date:
March 06, 2014
Filing Date:
August 27, 2013
Export Citation:
Assignee:
HITACHI MEDICAL CORP (JP)
International Classes:
H01J35/10; F16C25/08; F16C33/58; F16C33/66
Foreign References:
| JP2004518262A | 2004-06-17 | |||
| JP2005011736A | 2005-01-13 | |||
| JPS60112233A | 1985-06-18 | |||
| JPH07315269A | 1995-12-05 |
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