| 摘要 |
PURPOSE:To improve durability and reliability by restraining stress deforming due to thermal expansion. CONSTITUTION:A clamp 9 consists of both clamping pieces 10, 11. The sections of the clamping pieces 10, 11 are made a recessed shape suited to a flange, bolt holes 13, 14 are formed at both ends clamping parts 10a, 11a of the respective clamping pieces 10, 11, and a bolt 12 is fitted into the bolt holes 13, 14 and tightened by a nut 15. A recessed groove 16 is formed at a mating surface 10c of one clamping piece 10 and a projection 17 which an fit into the recessed groove 16 is formed at a mating surface 11c of the other clamping piece 11. Dimensions are set so that the recessed groove 16 may be pressed against the projection 17 earlier than the time the bolt 12 is pressed against the bolt holes 13, 14 when thermal expansion occurs at the respective clamping pieces 10, 11 under an engaging condition of the recessed groove 16 and the projection 17 with each other. The stress generated at the respective clamping pieces 10, 11 by thermal expansion works upon between the recessed groove 16 and the projection 17, which makes it difficult to transfer to the clamping parts 10a, 11a and the bolt 12. |
