Title:
BASE ISOLATION SUPPORT AND BASE ISOLATION SYSTEM
Document Type and Number:
Japanese Patent JP2020020403
Kind Code:
A
Abstract:
To provide a base isolation support capable of achieving prevention of long-term deterioration, low cost and increase in a support load in the vertical direction, and capable of acquiring a greater base isolation effect, and to provide a base isolation system.SOLUTION: A base isolation support includes: a plate-like lower flange 4; a plate-like upper flange 1 located above the lower flange 4; a spiral coil spring 2 provided between the lower flange 4 and an upper flange 1, constituted by plate-like members and having a plurality of loops; and a spring 3 which extends in the vertical direction, in which an upper end comes into contact with the upper flange 1, and in which a lower end comes into contact with the lower flange 4. The coil spring 2 is fixed to the lower flange 4 and the upper flange 1, and the loops constituting the spiral shape come into contact with each other in the vertical direction. The spring 3 has natural length L longer than a distance Ld between a portion of the upper flange 1 in which the upper end comes into contact and a portion of the lower flange 4 in which the lower end comes into contact.SELECTED DRAWING: Figure 3
Inventors:
KUMAGAI TAKAHITO
KOSUGI SHINJI
IIJIMA TADASHI
NAMITA YOSHIROU
KOSUGI SHINJI
IIJIMA TADASHI
NAMITA YOSHIROU
Application Number:
JP2018144990A
Publication Date:
February 06, 2020
Filing Date:
August 01, 2018
Export Citation:
Assignee:
HITACHI GE NUCLEAR ENERGY LTD
International Classes:
F16F3/04; E04H9/02; F16F15/04; F16F15/06
Attorney, Agent or Firm:
Polaire Patent Business Corporation