Title:
BASE ISOLATION ELEMENTS
Document Type and Number:
Japanese Patent JP3131829
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To dispense with a special damping device and reduce the size by engaging a plurality of wheels between recessed lower rail and upper rail fixed in a plurality of parallel lines, and rolling each wheel along the upper and lower rails while independently rotating by earthquake motion.
SOLUTION: Lower rails 4 are fixed on a support body 2 in a plurality of parallel lines, and formed into a recessed form having the lowest level in the center part. Upper rails 5 are fixed under a body to be supported 3 in parallel to the lines of the lower rails 4, and formed into a recessed form having the highest level in the center part. A plurality of wheels 7 arranged on a pair of axles 8 is engaged between the lower rails 4 and the upper rails 5. When an earthquake motion is generated in the lateral direction X, the wheels 7 are rolled on the lower rails 4 and the upper rails 5 with rotation, and relatively displaced. Consequently, since the load of the body to be supported 3 acts through the wheels 7 and the axles 8 without directly reaching the support 2, the friction between the wheels 7 and the axles 8 acts as a damping force to work a base isolating effect.
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Inventors:
Masao Akimoto
Application Number:
JP21485398A
Publication Date:
February 05, 2001
Filing Date:
July 14, 1998
Export Citation:
Assignee:
Sanko Engineering Co., Ltd.
International Classes:
E04H9/02; E04B1/98; F16F15/02; F16F15/04; F16M7/00; (IPC1-7): F16F15/02; E04H9/02
Domestic Patent References:
| JP48308A | ||||
| JP59217028A | ||||
| JP1061250A | ||||
| JP254040A | ||||
| JP1094444A | ||||
| JP413844U |
Attorney, Agent or Firm:
Fusao Iida