RU2016128196A - DOUBLE VIBRATION ISOLATING KOCHETOV SYSTEM ON THE BASIS OF EQUAL FREQUENCY SPRINGS - Google Patents

Claims (5)

1. A dual vibration-isolating system based on equal-frequency springs, containing a base, a support platform and an elastic element located between them, made in the form of a cylindrical equal-frequency spring, with a variable pitch t, ensuring the constancy of the natural frequency of the system at any loads P from a given range: P ₁ ≤ P≤P ₂ due to its precipitation δ:

, where P ₁ and P ₂ are the minimum and maximum loads, respectively, under which the conditions of equal frequency are maintained; P is a load satisfying the condition P ₁ ≤P≤P ₂ ; δ ₁ - a given initial spring draft, corresponding to the minimum load P ₁ , and the condition of equal frequency: the frequency of the natural oscillations of the vibration-insulated system is constant when the mass of this system changes within the specified limits, the system contains at least two spring-frequency equal-frequency vibration isolators with equally-frequency springs symmetrically installed relative to the support platform, while the lower flange of the equal-frequency spring of each vibration isolator is mounted on an elastic base, and the upper one on the base plate, and on the base the platform, by means of fasteners, a vibration-isolating object with a variable technological mass is fixed, and the platform is connected with support nodes mounted on the support plate of each vibration isolator using vertical and horizontal levers with axial-symmetrical adjustment bolts with equal-frequency springs rigidly connected to bushings covering the adjustment bolts nuts, and each of the support nodes contains vibration damping bushings, coaxially mounted with adjusting bolts, at The lower flange of the equal-frequency spring of each vibration isolator is mounted on an elastic base, which is connected to the lower platform of the vibration isolator by at least three struts with screws and with elastic coaxially located outside the struts, and under the elastic base of the lower flange of the equal-frequency spring, it is axisymmetric to it , a cylindrical-conical damper, for example from an elastomer, mounted with its cylindrical part on the lower platform of each vibration isolator, is placed, and the conical part is connected with the elastic With the help of equal frequency springs, the cylindrical cone damper is made in the form of conically and cylindrical helical springs connected in series, the turns of which are covered with an elastomer layer, for example polyurethane, an elastic base on which the lower flange of the equal frequency spring of the vibration isolator is fixed, is made combined, consisting of alternating layers of elastic material, for example, spring steel sheet, and layers of vibration damping material, for example, hard grades of vibration damping materials, such as astatik type “Agate”, “Anti-vibration”, “Shvim”, characterized in that under the support platform on which the vibration-insulated object is fixed, a buffer device is installed, fixed on the common base of the vibration-isolation system, which serves as a safety device to prevent an emergency in the technological the process or when installing the engines of ship power plants, in the event of a breakdown of one of the elements of the vibration-isolating system, or in case of an emergency violation of the technological process, or natural disasters, such as water transport objects under strong storm, while in normal operation, the buffer device hardware is inactive due to the presence of the gap between it and the support platform. 2. A dual vibration-isolating system based on equal-frequency springs according to claim 1, characterized in that the buffer device is made in the form of a vertical cylinder with fasteners located perpendicular to the axis of the cylinder in its middle part, and one of the fasteners is a bolt with a washer, and another, opposite located and connected to the bolt - a threaded sleeve with a washer, which is a supporting element with an inclined arrangement of a vibration-insulated object, while an elastic element of elastomer, for example rubber or polyurethane, and at the bottom there is a combined elastic element, and the combined elastic element consists of three intermediate vibration-damping layers: the first layer is of dispersed elastic-damping material, in which crumbs can be used, for example, the following materials: rubber, cork, polystyrene foam, kapron, foamed polymer, as well as crumbs of solid vibration damping materials, such as plastic compounds such as Agate, Anti-Vibrate, Shvim, with a size of fractions of crumbs of 1.5 ÷ 2.5 mm, W swarm layer - knitted from elastic filament, the mesh size of the elastic knitted synthetic yarn, for 10 ÷ 15% smaller size fractions crumb vibration-damping material; and the third layer is made of continuous damping material, in which sponge rubber, needle-punched material of the type “Vibrosil” based on silica or alumino-borosilicate fiber, as well as non-woven vibration-damping material can be used.