RU2018144521A - TWO-STAGE CONICAL VIBRATION INSULATOR - Google Patents

Claims (5)

1. A two-stage conical vibration isolator made in the form of a two-stage frame, consisting of sequentially connected and identical frames: the upper and lower frames, with the upper and lower elastic damping elements respectively aligned therewith, characterized in that the upper and lower frames are made in the form of coaxially arranged , hard shells of a truncated cone: the upper and lower, while the upper base of each of the shells is a hard disk connected to them, each of which rests with the upper ends, respectively, the upper and lower elastic-damping elements, and the lower base of each of the shells of the truncated cone is made open , and designed to install at least two inclined elastic elements, as well as at least two vertical elastic elements connected to the base, while inclined elastic elements are located in the peripheral part of the shells of the truncated cone, and vertical elastic elements with their own The upper ends are connected with the lower end part of the lower shell of the truncated cone, and the lower ends are connected with the base, while the elastic elements are mounted in planes with a 90 ° shift, and the inclined elastic elements of the upper frame, as well as the vertical elastic elements of the lower frame, are made in in the form of coil springs. 2. A two-stage conical vibration isolator according to claim 1, characterized in that the upper elastic damping element is made in the form of a dry friction vibration isolator containing an elastic element, a housing and a dry friction damper, the housing is made in the form of two opposite and opposite cylindrical coil springs of the upper and lower bushings, fixing the spring with its outer surface, and the dry friction damper is made in the form of at least three elastic petals rigidly connected to the lower sleeve, and covering with a certain force the external surface of the spring, containing the spring housing made of screw, hollow and elastic steel a tube inside which at least one additional elastic steel tube is coaxially and axisymmetrically mounted with a gap, and at least one friction element is located in the gaps between the tubes, while the surfaces of the spring housing and the additional elastic steel tube are in contact with the surfaces of the friction uh elements, and their axis coincides with the axis of the turns of the case, and centrally, coaxially and axisymmetrically to the case, there is a screw elastic rod, made solid, in the form of a coil spring with a step less by 5 ÷ 10% of the step of the helix of the case, to create an interference fit, providing the functional purpose of the friction elements, and the friction elements are made tubular, and from the inside the petals of the vibration isolator are covered with a layer of sintered friction material made of copper, containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon, in the following ratio of components, wt. %: zinc 6.0 ÷ 8.0; iron 0.1 ÷ 0.2; lead 2.0 ÷ 4.0; graphite 3.0 ÷ 7.0; vermiculite 8.0 ÷ 12.0; chrome 4.0 ÷ 6.0; antimony 0.05 ÷ 0.1; silicon 2.0 ÷ 3.0; copper - the rest, and the friction element located in the gaps between the tubes is made of friction material, including the following components, with their ratio, in wt. %: a mixture of resole and novolac phenol-formaldehyde resins in the ratio 1: (0.2-1.0) -8 ÷ 34%; a fibrous mineral filler containing glass roving or a mixture of glass roving and basalt fiber in a ratio of 1: (0.1-1.0) -12 ÷ 19%; graphite - 7 ÷ 18%; a friction modifier containing carbon black in the form of a mixture with kaolin and silicon dioxide - 7 ÷ 15%; barite concentrate - 20 ÷ 35%; talc - 1.5 ÷ 3.0%. 3. The two-stage conical vibration isolator according to claim 1, characterized in that the lower elastic-damping element is made in the form of a cylindrical spring, which consists of two parts with opposite ends, one part of which has turns of rectangular cross section, and the other part of the spring is hollow, This counter-directed end of the first part is placed in the cavity of the second, the gaps of the segment profile of the contacting parts of the spring are filled with antifriction grease, while at the end of the second part of the spring a sealing lip is installed to prevent leakage of lubricant, and the first part of the coil spring is made with round turns with rounded edges , covers a tube of damping material, for example polyurethane, clearances in the first part of a coil spring made with coils of rectangular cross section, which covers a tube of damping material, filled with crumb of friction material, clearances in the first part of a coil spring made with coils of rectangular cross section, which covers a tube of damping material, are filled with crumbs of friction material made of a composition comprising the following components, in their ratio, in wt. %: a mixture of resole and novolac phenol formaldehyde resins in a ratio of 1: (0.2-1.0) 28 ÷ 34% fibrous mineral filler containing glass roving or a mixture of glass roving and basalt fiber in a ratio of 1: (0.1-1.0) 12 ÷ 19%, graphite 7 ÷ 18%, carbon black friction modifier in the form of a mixture with kaolin and silicon dioxide 7 ÷ 15% barite concentrate 20 ÷ 35%, talc 1.5 ÷ 3.0%. 4. The two-stage conical vibration isolator according to claim 1, characterized in that the vertical elastic elements are made in the form of disk elastic elements, each of which contains a frame made of lower and upper parts, while the lower part of the frame consists of a base made in the form of a disk with an annular inner groove in which the lower elastic ring of the disk-shaped elastic element is placed, and the upper part of the frame is made in the form of a cover, which is a disk with a central ring recess, and rigidly connected by, for example, screws with the upper elastic ring of the disk-type elastic element, in the central annular recess of the lid there is a layer of vibration-damping material, for example, polyurethane, on which the mounting plate for fixing the vibration-insulated object is fixed, and a layer of vibration-damping material, located in the central annular recess of the cover, on which the mounting plate for mounting the vibration-insulating volume is fixed The project is made in the form of three intermediate vibration-damping layers: the first layer is made of dispersed elastic-damping material, in which crumbs can be used, for example, the following materials: rubber, cork, foam, capron, foamed polymer, as well as crumbs of solid vibration-damping materials, such as plastic such as Agate, Anti-Vibrate, Shvim with a size of crumbs fractions of 1.5 ÷ 2.5 mm, the second layer is made of knitted elastic synthetic fibers, and the size of cells knitted from elastic synthetic fibers is 10-15% less size fractions of crumbs of vibration damping materials; and the third layer is made of a 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.