FIELD: construction.
SUBSTANCE: invention relates to construction and may be used for vibration isolation, sound insulation in enclosed spaces when installing and installing ventilation units, compressors, generators and other equipment. Vibrodamping insert for the cavities of slabs of interfloor overlap is made in the form of a cylinder of rigid vibrodamping material inside of which is axisymmetrically and coaxially located elastic core with discs. Along the rod axis the damping disks are rigidly fixed along the whole length of the cavity. Extreme discs are fixed "flush" with the cylinder of the vibration damping material, its ends, in turn, are located "flush" with the side surfaces of the base plate of the inter-floor. There are intermediate damping disks placed evenly with the step not exceeding the internal diameter of the cylinder. Damping cavities in the vibration damping insert formed by the damping discs are filled with a vibration damping material, e.g. cast polyurethane. and the cavities formed by the extreme damping discs and adjacent discs are filled with chips from vibration damping material, for example, e.g. “Agat” type, or damping cavities in the vibration damping insert, filled respectively with polyurethane and chips from vibration damping material, are sequentially arranged along the length of the cylinder. Elastic core axisymmetric and coaxially placed within the cylinder of the vibrodamping insert, is made of a combined and consisting of an elastic part in the form of a rod, made in the form of an outer coaxial shell made of a vibration damping material e.g. in the form of polyurethane. Damping disks rigidly fixed along the entire length of the elastic core are arranged with alternating rigid and combined disks. Combined disks consist of an elastic part in the form of oppositely fixed on the elastic core discs of solid vibration damping material, for example, plastic like “Agat”, “Antivibrite”, “Schwim”, and a damping part made in the form of a disk of a soft vibration damping material located between disks of a solid vibration damping material and made of soft vibration damping material, e.g. sponge rubber, nonwoven vibro-damping material, polyurethane. Rigid damping disks are made in the form of a disk perforated frame of elastic material filled with a mesh damping element. Density of the net structure of the net damping element of the disk perforated frame of the rigid damping disks is in the optimum range of values: 1.2÷2.0 g/cm3. Resilient mesh elements are made of EI-708 grade steel with diameter within the optimal range of 0.09÷0.15 mm. Mesh damping element is filled with an elastomer e.g. in the form of polyurethane.
EFFECT: invention allows to improve vibration-absorbing and soundproofing properties of floor.
1 cl, 3 dwg
