JP2854722B

PURPOSE:To make angular moment acting to a bucket invalid to get rid of lowering of strength of a disc wheel and a connecting pin by making a device into a constitution canceling moments generating at the time of assembled the neighboring buckets on a tilted surface with face pressure to each other in making a blade joint part and a shroud so as to be in the reverse direction to each other. CONSTITUTION:Parts of both end surfaces in the rotational direction of a blade joint part 2 and an integrated shroud 4 are made to be tilted surfaces 6, 7 tilted in the reverse direction to each other to the axial direction at the blade joint part 2 and the shroud 4. Therefore, angular moments acting to a bucket 1 are made to be in the reverse direction to each other to negate themselves, accordingly no additive force is caused to a disc wheel and a pin. Therefore, there is no lowering strength of the bucket due to additive force or no injuring suppressing effect of vibration unlike the past.