Vertical liquid inertia vibration isolator

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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Details

F16F 9/18 (2006.01) F16F 1/38 (2006.01) F16F 13/06 (2006.01) F16F 13/24 (2006.01) F16C 11/06 (2006.01)

Patent

CA 2409988

A vibration isolator (10) for isolating the vibration of two bodies that are connected together is disclosed. The vibration isolator (10) comprises an inner cylinder (16) and a pair of outer housings (12, 14) concentrically bonded together with elastomer structures (18, 20) to form two chambers (22, 26) that are joined by a tuning port (24). The elastomer structures (18, 20) may serve both as the seals for the chambers (22, 26) and the compliant spring members in the isolator (10). The isolator (10) connects to a vibrating body a spherical bearing (28). The chambers (22, 26) and tuning port (24) are filled with an inviscid fluid (34) and pressurized to prevent cavitation. In certain embodiments, pressure within the isolator (10) is maintained by a volume compensating device (30) connected to the chambers (22, 26) via a small diameter orifice (36).

L'invention concerne un dispositif d'isolation des vibrations (10) destiné à isoler les vibrations de deux corps qui sont assemblés. Ce dispositif (10) comprend un cylindre interne (16) et une paire de boîtiers externes (12, 14) reliés de façon concentrique au moyen de structures élastomères (18, 20), de manière à former deux chambres (22, 26) qui sont reliées par un orifice de réglage (24). Les structures élastomères (18, 20) sont utilisées aussi bien en tant que joints pour les chambres (22, 26) qu'éléments de ressort adaptables dans le dispositif d'isolation (10). Celui-ci (10) est relié à un corps vibrant par une portée sphérique (28). Les chambres (22, 26) et l'orifice de réglage (24) sont remplis d'un fluide exempt de viscosité (34) et pressurisés de manière à prévenir une cavitation. Dans certains modes de réalisation, la pression comprise dans le dispositif d'isolation (10) est maintenue par un dispositif de compensation de volume (30) relié aux chambres (22, 26) via un orifice de petit diamètre (36).

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