| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately preload a tie rod in order to provide a rotor structure which can be assembled easily and overlapped in an axial direction so as not to exert adverse influences on the mechanical behavior of shafts because of an eccentric weight or long inter-center distance. <P>SOLUTION: A rotor structure includes a plurality of wheels 2, a main axial tie rod 3 passing through the plurality of wheels 2 and two shafts 4, 5 each attached to one extremity of the main tie rod. The main tie rod 3 and a bore of an end wheel 2d in contact with one shaft 5 delimit a chamber designed to receive a hydraulic fluid, and the main tie rod 3, the hydraulic chamber and the end wheel 2d form an internal hydraulic tension device 10 designed so as to preload the main tie rod 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
