The invention relates to an anti-vibration device (100), for example intended for a railroad application, comprising: a first frame (10), a second frame (20), a shock absorbing structure (30) for the vibrations, situated between the two frames (10, 20), and at least one fire barrier layer (40) at least partially covering the shock absorbing structure (30);
characterized in that said at least one fire barrier layer (40) is a polychloroprene-based elastomer including at least one fire retardance agent chosen from among alumina trihydrate or magnesium hydroxide.

The invention relates to an anti-vibration device (100), for example intended for a railroad application, comprising: a first frame (10), a second frame (20), a shock absorbing structure (30) for the vibrations, situated between the two frames (10, 20), and at least one fire barrier layer (40) at least partially covering the shock absorbing structure (30);
characterized in that said at least one fire barrier layer (40) is a polychloroprene-based elastomer including at least one fire retardance agent chosen from among alumina trihydrate or magnesium hydroxide.

A vibration isolation apparatus 1 includes: a laminated elastic body 8 in which elastic layers 3 and rigid layers 7 are alternately laminated and a circularly columnar body 14 which is constituted by damping bodies 12 press-fitted in a circularly columnar hollow portion 11 of the laminated elastic body 8, wherein each of the damping bodies 12 contains a thermally conductive filler, a graphite, and a thermosetting resin.

Disclosed is a method of manufacturing a final piece including several materials, the final piece being produced at least according to the steps of: inserting an elastomer (5) in at least one insertion cavity (6) of an initial piece (2) so that the elastomer (5) is in contact and fixed with the initial piece (2); then cutting the initial piece (2) in at least two distinct parts (3, 4), so that the at least two distinct parts (3, 4) are fixed together but not in contact with each other, the at least two distinct parts (3, 4) being connected together by the elastomer (5). This may be applied to manufacturing a final piece including several parts, of various natures, connected together.

The invention relates to a spring element for vibration damping and/or suspension of a rail vehicle, comprising at least one elastic damping body and at least one fire-resistant cover layer arranged on the damping body, the cover layer having at least one compensation zone, wherein the compensation zone is compressed in the loaded state of the spring element such that wrinkling of the cover layer is prevented, wherein the cover layer and the damping body are inseparably connected to form a composite element. The invention further relates to a cover layer and the use of a spring element or a cover layer.

The invention relates to a spring element for vibration damping and/or suspension of a rail vehicle, comprising at least one elastic damping body and at least one fire-resistant cover layer arranged on the damping body, the cover layer having at least one compensation zone, wherein the compensation zone is compressed in the loaded state of the spring element such that wrinkling of the cover layer is prevented, wherein the cover layer and the damping body are inseparably connected to form a composite element. The invention further relates to a cover layer and the use of a spring element or a cover layer.

The present disclosure discloses a three-dimensional seismic and vibration isolator with adaptive stiffness property in both vertical and horizontal directions. The isolator comprises an upper connection plate, a middle plate, an lower connection plate, a disc spring, a pre-compressed helical springs, a laminated lead rubber bearing, and viscous dampers. The upper connection plate, the middle plate and lower connection plate are made of high strength low carbon steel. The upper connection plate and middle plate are tightly contacted by the occlusive design, to guide the vertical motion. The vertical isolation system is made up of the disc spring, pre-compressed helical spring, and viscous damper. The horizontal isolation system comprises the laminated lead rubber bearing, pre-compressed helical spring and viscous damper. The disclosure adopts the theory of nonlinear adaptive vibration control technology and can be used to protect building structures or instruments from the seismic strikes or other environmental vibrations.

A laminated elastomeric journal bearing has an outer sleeve having an inner surface, at least a portion of each end of the inner surface being a concave surface of revolution, and an inner sleeve having an outer surface, at least a portion of each end of the outer surface being a convex surface of revolution. Alternating layers of elastomer and metal are located between the sleeves, with adjacent surfaces of the layers and the sleeves being adhered to each other.

A laminated elastomeric journal bearing has an outer sleeve having an inner surface, at least a portion of each end of the inner surface being a concave surface of revolution, and an inner sleeve having an outer surface, at least a portion of each end of the outer surface being a convex surface of revolution. Alternating layers of elastomer and metal are located between the sleeves, with adjacent surfaces of the layers and the sleeves being adhered to each other.

Novel elastic torsion stop components based on multilayer elastomer metal elements in cylindrical, conical, or spherical shape. The elastic torsion stop components are particularly suitable for use as maintenance-free and low-wear joints having a large angular spread, for example in vibration absorbers, such as in pendulum vibration absorbers for wind turbines.