BASE ISOLATION DEVICE FOR PRECISION INSTRUMENT
PROBLEM TO BE SOLVED: To elastically fix an instrument and an anchor bolt and to limit the horizontal movement of the instrument while maintaining a buffer function by setting, to zero, the sum of synthetic vectors of a plurality of base isolation members made of cordlike elastic materials for joini...
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| creator | MURAKAMI KAZUYOSHI IWABUCHI NOBURO TANAKA TATSUO |
| description | PROBLEM TO BE SOLVED: To elastically fix an instrument and an anchor bolt and to limit the horizontal movement of the instrument while maintaining a buffer function by setting, to zero, the sum of synthetic vectors of a plurality of base isolation members made of cordlike elastic materials for joining an instrument side connecting part and an anchor bolt connecting part. SOLUTION: The instrument side connecting part 4b of a base isolation member 4 is connected so as to be freely rotated around a support leg shaft 2a, and an anchor bolt connecting part 4a is connected so as to be rotated around an anchor bolt 5 buried in a floor structure 3. Here, a direction where the instrument side connecting part 4b is a starting point and the anchor bolt connecting part 4a is a finishing point is set as a vector direction, a spring constant is set to indicate a vector size, and a vector sum is zero. By arranging the base isolation member 4 in such a manner, when an instrument 1 is shifted from an original position, a tensile force is generated in the base isolation member 4 corresponding to its moving direction, and a buffer function is exercised. Thus, the accident of personnel getting stuck in the instrument caused by earthquake shaking is prevented. |
| format | Patent |
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SOLUTION: The instrument side connecting part 4b of a base isolation member 4 is connected so as to be freely rotated around a support leg shaft 2a, and an anchor bolt connecting part 4a is connected so as to be rotated around an anchor bolt 5 buried in a floor structure 3. Here, a direction where the instrument side connecting part 4b is a starting point and the anchor bolt connecting part 4a is a finishing point is set as a vector direction, a spring constant is set to indicate a vector size, and a vector sum is zero. By arranging the base isolation member 4 in such a manner, when an instrument 1 is shifted from an original position, a tensile force is generated in the base isolation member 4 corresponding to its moving direction, and a buffer function is exercised. Thus, the accident of personnel getting stuck in the instrument caused by earthquake shaking is prevented.</description><edition>6</edition><language>eng</language><subject>BLASTING ; CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MEANS FOR DAMPING VIBRATION ; MECHANICAL ENGINEERING ; PHYSICS ; SHOCK-ABSORBERS ; SPRINGS ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>1999</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990305&DB=EPODOC&CC=JP&NR=H1163108A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990305&DB=EPODOC&CC=JP&NR=H1163108A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MURAKAMI KAZUYOSHI</creatorcontrib><creatorcontrib>IWABUCHI NOBURO</creatorcontrib><creatorcontrib>TANAKA TATSUO</creatorcontrib><title>BASE ISOLATION DEVICE FOR PRECISION INSTRUMENT</title><description>PROBLEM TO BE SOLVED: To elastically fix an instrument and an anchor bolt and to limit the horizontal movement of the instrument while maintaining a buffer function by setting, to zero, the sum of synthetic vectors of a plurality of base isolation members made of cordlike elastic materials for joining an instrument side connecting part and an anchor bolt connecting part. SOLUTION: The instrument side connecting part 4b of a base isolation member 4 is connected so as to be freely rotated around a support leg shaft 2a, and an anchor bolt connecting part 4a is connected so as to be rotated around an anchor bolt 5 buried in a floor structure 3. Here, a direction where the instrument side connecting part 4b is a starting point and the anchor bolt connecting part 4a is a finishing point is set as a vector direction, a spring constant is set to indicate a vector size, and a vector sum is zero. By arranging the base isolation member 4 in such a manner, when an instrument 1 is shifted from an original position, a tensile force is generated in the base isolation member 4 corresponding to its moving direction, and a buffer function is exercised. 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SOLUTION: The instrument side connecting part 4b of a base isolation member 4 is connected so as to be freely rotated around a support leg shaft 2a, and an anchor bolt connecting part 4a is connected so as to be rotated around an anchor bolt 5 buried in a floor structure 3. Here, a direction where the instrument side connecting part 4b is a starting point and the anchor bolt connecting part 4a is a finishing point is set as a vector direction, a spring constant is set to indicate a vector size, and a vector sum is zero. By arranging the base isolation member 4 in such a manner, when an instrument 1 is shifted from an original position, a tensile force is generated in the base isolation member 4 corresponding to its moving direction, and a buffer function is exercised. Thus, the accident of personnel getting stuck in the instrument caused by earthquake shaking is prevented.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING PHYSICS SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL WEAPONS |
| title | BASE ISOLATION DEVICE FOR PRECISION INSTRUMENT |
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