ABSOLUTE POSITION CORRECTION DEVICE FOR STRUCTURE INSTALLED ON GROUND WITH RESPECT TO FLUCTUATION OF ITS FOUNDATION

摘要

PURPOSE:To correct the displacement of the absolute position due to the fluctuation in its foundation by arranging the correction device to four corners of a rectangular structure so that each position cylinder of the adjacent correction devices is made orthogonal and supporting normally the structure with the position alignment cylinder. CONSTITUTION:In order to prevent production of an excess internal stress in the structure after the start of operation, position alignment cylinders SX1, SX2 in a Y or X direction on a common base C1 with respect to the displacement causing a setting load or over are made free so as to allow the base to be freely expanded or contracted with an external force thereby absorbing the displacement in the X or Y direction. Then after lapse of a prescribed time, the X, Y, Z displacement quantities of the structure support 1 is measured to decide a stroke correction quantity. Then the cylinders SX1, SX2 of the device on diagonal lines are adjusted to a setting stroke quantity thereby correcting the displacement. Moreover, X, Y coordinates of an auxiliary leg Z are adjusted by step cylinders AJ1, AJ2, the auxiliary leg Z and the cylinders SX1, SX2 are set on a same plane to contract the auxiliary leg Z and the cylinders SX1, SX2 support the structure.