Patent RU-2663534-C1 (RU)
Inventor: Kochetov Oleg Savelevich
IPC: E04B1/82
Filed: 2017-10-03
Granted: 2018-08-07
Abstract: FIELD: acoustics.SUBSTANCE: invention relates to industrial acoustics, particularly, to broadband acoustic suppression, and can be used in all national economy industries as a means of protection from noise. Acoustic structure of the building contains the frame of the workshop, bearing walls with fences in the form of floor and ceiling, which are lined with sound-absorbing structures, window and door openings, as well as piece sound absorbers containing a frame, in which the sound-absorbing material is located and installed above the noisy equipment, the floor is made on an elastic base, the design of the floor on the elastic base contains a mounting plate made of concrete reinforced with vibration damping material, while vibrodamping inserts are installed in the cavities of the base plates of the intermediate floor, each of which is made in the form of a cylinder of rigid vibrodamping material, inside which axisymmetrically and coaxially located elastic core with discs, along the axis of the elastic core, the damping disks are rigidly fixed along the entire length of the cylinder cavity, and the elastic core is made of a combined and consisting of an elastic part in the form of a rod and a damping part made in the form of an outer coaxial shell made of a vibration damping material, damping disks are made of combined and consisting of an elastic part in the form of oppositely fixed on the elastic core disks of solid vibration damping material, made in the form of a disk perforated frame of an elastic material filled with a mesh damping element located between the disks of a solid vibration damping material, and made in the form of a disk of soft vibration damping material, wherein the rigid damping disks are made in the form of a disk perforated frame of elastic material filled with a mesh damping element, the sound absorbers are made spherical, each of which contains sound absorbers of active and reactive types, placed on a rigid frame, which is made in a spherical shape with an internal spherical resonance cavity congruent to the frame, formed by a rigid continuous spherical shell equidistant to the outer perforated spherical shell, while the space between the spherical shells is filled with a sound-absorbing material, and the connection of the outer perforated spherical shell with the object, for example, the ceiling of the production room, is made by means of an elastic damping element, which allows to damp high-frequency oscillations, and hingedly connected to the suspension, made in the form of a rod, one end of which is connected to a hinge mounted on the resilient damping element, and the other is connected to a ring intended to be fixed to the object, the spherical resonant cavity is rigidly connected to at least one sleeve with an axial hole serving as a neck of the Helmholtz resonator, with the outer perforated spherical shell, and the space between them is filled with the sound absorber.EFFECT: technical result is to increase the strength and seismic stability of the building, as well as the effectiveness of noise control.3 cl, 5 dwg