| 摘要 |
PURPOSE:To facilitate the removal, inspection, and replacing of a magnetic pole, by providing an internal top cover with a penetrating slot for taking out the magnetic pole, and by setting a support for permitting the magnetic pole to slide in the axial direction. CONSTITUTION:A magnetic pole 9 consists of a field core 9a and a field winding 9b, and a dovetail-formed projected section on the bottom surface of the field core 9a is fitted on a dovetail-formed groove section and is fixed. When taking out the magnetic pole 9, the pole 9 is moved in the direction shown in the arrow head of a thick line, and the moving-directional tip section of the magnetic pole 9 is mounted on the end section of a support 12, and the magnetic pole 9 is continuously moved, then the magnetic pole 9 is pulled out sliding on the support 12 and is taken out through a penetrating slot 10 set on an internal top cover 1b. As a result, without removing the internal top cover 1b, the magnetic pole 9 can be easily taken out.
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