| 摘要 |
<p>PURPOSE:To damp vibration due to an earthquake and others while allowing slow displacement against a support body of a damping object of a piping and others in which a hot temperature fluid flows. CONSTITUTION:A damper 1 and an oscillation absorber 12 are directly connected to each other on the same axial line. The damper 1 allows slow displacement due to temperature change of a piping and others but constrains sudden displacement due to oscillation of an earthquake and others. The oscillation absorber 12 is constituted so that a piston rod 16 moves to get in and out of a cylinder 13 and a rod cover 18. A visco-elastic member 19 is adhered between the piston rod 16 and a support plate 20 and fixed on the cylinder 13 and the rod cover 18. The visco-elastic member 19 has a characteristic to change a load at the time when the piston rod 16 and the rod cover 18 are relatively displaced along a hysteresis curved line against displacement. Consequently, oscillation of the earthquake and others becomes reciprocal motion against the rod cover 18 of the piston rod 16 by the damper 1, and the visco-elastic member 19 damps vibration.</p> |
