RU2015100069A

RU2015100069A - Kochetov Vibration Isolator with Dry Friction

Info

Publication number: RU2015100069A
Application number: RU2015100069A
Authority: RU
Inventors: Олег Савельевич Кочетов
Original assignee: Олег Савельевич Кочетов
Priority date: 2015-01-12
Filing date: 2015-01-12
Publication date: 2016-08-10
Also published as: RU2597702C2

Abstract

1. Виброизолятор с сухим трением, содержащий упругий элемент, корпус и демпфер сухого трения, корпус выполнен в виде двух оппозитно расположенных относительно торцов цилиндрической винтовой пружины верхней и нижней втулок, фиксирующих пружину своей внешней поверхностью, а демпфер сухого трения выполнен в виде, по крайней мере, трех упругих лепестков, жестко связанных с нижней втулкой и охватывающих с определенным усилием внешнюю поверхность пружины, отличающийся тем, что цилиндрическая винтовая пружина содержит корпус, выполненный из винтовой, пустотелой и упругой стальной трубки, внутри которой коаксиально и осесимметрично установлена с зазором, по крайней мере, одна дополнительная упругая стальная трубка, а в зазорах между трубками расположен, по крайней мере, один фрикционный элемент, например, из полиэтилена, обладающего высоким коэффициентом теплового расширения по сравнению со сталью, при этом поверхности корпуса и дополнительной упругой стальной трубки соприкасаются с поверхностями фрикционных элементов, а их оси совпадает с осью витков корпуса, а центрально, коаксиально и осесимметрично корпусу расположен винтовой упругий стержень, выполненный сплошным, а фрикционные элементы выполнены трубчатыми, например, из полиэтилена.2. Виброизолятор с сухим трением по п. 1, отличающийся тем, что изнутри лепестки покрыты слоем фрикционного материала.3. Виброизолятор с сухим трением по п. 1, отличающийся тем, что фрикционный элемент выполнен комбинированным, например из полиэтилена с вкраплениями гранул из вибродемпфирующего материала.4. Виброизолятор с сухим трением по п. 1, отличающийся тем, что фрикционный элемент выполнен в1. Vibration isolator with dry friction, containing an elastic element, a housing and a dry friction damper, the housing is made in the form of two opposite opposite ends of the coil spring 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 at least three elastic petals rigidly connected to the lower sleeve and covering with a certain force the external surface of the spring, characterized in that the coil spring contains a housing made of at least one additional elastic steel tube, and at least one friction element, for example, made of high-coefficient polyethylene, is located in the gaps between the tubes, inside of it, hollow and elastic steel tube, inside of which coaxially and axisymmetrically installed with a gap thermal expansion compared with steel, while the surface of the housing and the additional elastic steel tube are in contact with the surfaces of the friction elements, and their axis coincides with the axis of the turns of the housing, and centrally, oaksialno housing and axially located screw elastic rod made continuous, and the friction elements are tubular, for example, from polietilena.2. Vibration isolator with dry friction according to claim 1, characterized in that the petals are covered with a layer of friction material from the inside. 3. Vibration isolator with dry friction according to claim 1, characterized in that the friction element is made combined, for example, polyethylene interspersed with granules of vibration damping material. 4. Vibration isolator with dry friction according to claim 1, characterized in that the friction element is made in

Claims

1. Vibration isolator with dry friction, containing an elastic element, a housing and a dry friction damper, the housing is made in the form of two opposite opposite ends of the coil spring 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 at least three elastic petals rigidly connected to the lower sleeve and covering with a certain force the external surface of the spring, characterized in that the coil spring contains a housing made of at least one additional elastic steel tube, and at least one friction element, for example, made of high-coefficient polyethylene, is located in the gaps between the tubes, inside of it, hollow and elastic steel tube, inside of which coaxially and axisymmetrically installed with a gap thermal expansion compared with steel, while the surface of the housing and the additional elastic steel tube are in contact with the surfaces of the friction elements, and their axis coincides with the axis of the turns of the housing, and centrally, oaksialno housing and axially located screw elastic rod made continuous, and the friction elements are tubular, for example, of polyethylene.

2. Vibration isolator with dry friction according to claim 1, characterized in that the petals are coated with a layer of friction material from the inside.

3. Vibration isolator with dry friction according to claim 1, characterized in that the friction element is made combined, for example, polyethylene interspersed with granules of vibration damping material.

4. Vibration isolator with dry friction according to claim 1, characterized in that the friction element is made in the form of a granular backfill of vibration damping material.

5. A dry-friction vibration isolator according to claim 1, characterized in that the helical elastic rod is made in the form of a helical spring with a step less by 5 ÷ 10% of the helical line pitch of the housing to create an interference fit for the functional purpose of the friction elements.

6. Vibration isolator with dry friction according to claim 1, characterized in that the inside of the petals of the vibration isolator is coated with a layer of friction material made of a composition comprising the following components in their ratio, wt.%:

mixture of resol and novolac phenol formaldehyde pitches in the ratio 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%.

7. The dry friction vibration isolator according to claim 1, characterized in that the inside of the petals of the vibration isolator is coated with a layer of sintered friction material made of copper containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon, in the following the 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 is the rest.