Dynamic vibration absorber for pendulum type structure
First Claim
1. A dynamic absorber on a pendulum type structure having a body swingably suspended from a supporting portion by a link, said dynamic absorber being located above a center of gravity of the pendulum type structure such that the dynamic absorber applies damping force to the pendulum type structure and said dynamic absorber comprising a mass element moveable under the action of gravity to apply a damping force to the pendulum type structure and a damper element for restraining movement of said mass element.
1 Assignment
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Accused Products
Abstract
A dynamic absorber for a pendulum type structure is particularly useful for suppressing swing. In operative association with the pendulum type structure, the dynamic absorber is provided above the center of gravity of the pendulum type structure such that the dynamic absorber can apply damping force to the pendulum type structure.
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Citations
7 Claims
- 1. A dynamic absorber on a pendulum type structure having a body swingably suspended from a supporting portion by a link, said dynamic absorber being located above a center of gravity of the pendulum type structure such that the dynamic absorber applies damping force to the pendulum type structure and said dynamic absorber comprising a mass element moveable under the action of gravity to apply a damping force to the pendulum type structure and a damper element for restraining movement of said mass element.
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6. A dynamic absorber on a pendulum type structure having a body swingably suspended from a supporting portion through a link, said dynamic absorber being located above a center of gravity of the pendulum type structure such that the dynamic absorber applies damping force to the pendulum type structure and comprising a mass element provided on a general circular track formed integrally with said link and structured and arranged such that said mass element is capable of rolling on said track, and a damper element for restraining rolling of said mass element,
wherein said mass element is optimally tuned to a natural vibration of a pendulum motion of said pendulum type structure depending on a ratio of the mass of the mass element to the mass of the body.
Specification