| 摘要 |
PURPOSE:To offer a winding clamping device which can retain firmly a winding, by compensating the decrease of a clamping pressure accompanied with the dimensional reduction of insulators generated when a long operation of an induction electric apparatus and sufficiently coping with a thrust generated in the axial direction of the winding by an external short accident, etc. CONSTITUTION:A fixed cylinder 9 is inserted into a through-hole of an iron core clamping fittig 3 for the winding 2 clamped under a fixed pressure by a clamping tool such as an oil pressure jack. In this case, a movable part 10 is clamped with the fixed cylinder 9 by a fixed nut 16, and the position of a lock nut 17 is so determined that the end surface part contacts a clamping ring 6. Next, when the fixed nut 16 is quickly rotated so as to pinch the iron core clamping fitting 3 with the lock nut 17 in a state that the fixed cylinder 9 is pressed to the direction of the winding 2, the fixed cylinder 9 is fixed on the iron core clamping fitting 3, and simultaneously the movable part 10 is relieved in the engagement with the fixed nut 16 resulting in pressing the winding 2 under a fixed pressure via the clamping ring 6 under the action of coil springs 11. Thus, when the clamping tool such as an oil pressure jack is removed, the clamping force of the clamping tool is replaced to this winding clamping device. |
