RU2014111271A

RU2014111271A - SPRING VIBRATION INSULATOR FOR TECHNOLOGICAL EQUIPMENT WITH VARIABLE WEIGHT

Info

Publication number: RU2014111271A
Application number: RU2014111271/11A
Authority: RU
Inventors: Татьяна Дмитриевна Ходакова; Олег Савельевич Кочетов; Мария Олеговна Стареева; Мария Михайловна Стареева; Анна Михайловна Стареева
Original assignee: Татьяна Дмитриевна Ходакова
Priority date: 2014-03-25
Filing date: 2014-03-25
Publication date: 2015-09-27

Abstract

1. Пружинный виброизолятор для технологического оборудования с переменной массой, содержащий основание, опорную платформу и расположенный между ними упругий элемент, выполненный в виде цилиндрической равночастотной пружины, имеющей переменный шаг t, обеспечивающий постоянство собственной частоты системы при любых нагрузках Р из заданного диапазона: P≤Р≤Р, за счет своей осадки δ:где Ри Pсоответственно минимальная и максимальная нагрузки, при которых сохраняются условия равночастотности; Р - нагрузка, удовлетворяющая условию P≤P≤Р;δ- заданная начальная осадка пружины, отвечающая минимальной нагрузке Р, и условию равночастотности: постоянству частоты собственных колебаний виброизолируемой системы при изменении массы этой системы в заданных пределах, отличающийся тем, что он содержит равночастотную пружину, нижний фланец которой закреплен на упругом основании, а верхний - на опорной пластине, а на опорной платформе, посредством крепежных элементов, закреплен виброизолируемый объект с переменной технологической массой, причем платформа связана с опорным узлом, закрепленным на опорной пластине виброизолятора с помощью осесимметричных с равночастотной пружиной регулировочных болтов, жестко соединенных со втулками, охватывающими регулировочные болты гайками, а каждый из опорных узлов содержит вибродемпфирующие втулки, коаксиально установленные регулировочным болтам, при этом нижний фланец равночастотной пружины виброизолятора закреплен на упругом основании, которое посредством, по крайней мере, трех стоек с винтами и с коаксиально расположенными снаружи стоек, эластичными втулками, соединено с ниж1. Spring vibration isolator for technological equipment with variable weight, containing a base, a support platform and an elastic element located between them, made in the form of a cylindrical equal-frequency spring having a variable pitch t, ensuring the constancy of the natural frequency of the system at any loads P from a given range: P≤ P≤P, due to its precipitation δ: where Ри P, respectively, the minimum and maximum loads under which the conditions of equal frequency are maintained; P is a load satisfying the condition P≤P≤P; δ is the specified initial spring draft corresponding to the minimum load P, and the condition of equal frequency: constant frequency of natural vibrations of the vibration-insulated system when the mass of this system changes within specified limits, characterized in that it contains equal frequency a spring, the lower flange of which is fixed on an elastic base, and the upper one - on the support plate, and on the supporting platform, by means of fasteners, a vibration-insulated object with a variable technological mass is fixed, p what is the reason the platform is connected with the support unit mounted on the base plate of the vibration isolator with the help of axisymmetric adjustment bolts with an equal-frequency spring, rigidly connected to the bushings covering the adjustment bolts with nuts, and each of the support units contains vibration damping bushings coaxially mounted with the adjustment bolts, while the lower flange is equal to the vibration isolator springs are fixed on an elastic base, which, by means of at least three struts with screws and with a coaxially located sleep uzhi struts, elastic sleeves, connected to LO

Claims

1. Spring vibration isolator for technological equipment with variable mass, containing a base, a support platform and an elastic element located between them, made in the form of a cylindrical equal-frequency spring having 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, respectively, the minimum and maximum loads 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: constant frequency of natural vibrations of the vibration-insulated system when the mass of this system changes within specified limits, characterized in that it contains an equal-frequency spring, the lower flange of which is fixed on an elastic base, and the upper one is on the support plate, and on the support platform, by means of fasteners, a vibration-isolating object with a variable technological mass is fixed, the platform being connected to the support unit, mounted on the base plate of the vibration isolator with the help of adjustment bolts axisymmetric with an equal frequency spring, rigidly connected to the bushings, the nuts covering the adjustment bolts, and each of the support nodes contains vibration damping bushings, coaxially mounted with the adjustment bolts, while the lower flange of the equal-frequency spring is mounted on the vibration isolation base which by means of at least three racks with screws and with coaxially located outside racks, elastic bushings, is connected but with a lower isolator platform, and under elastic base bottom flange equifrequent spring axisymmetrically it is arranged cylindric damper, for example an elastomer, fixed on its cylindrical part of the lower platform each isolator and the conical portion is connected with the elastic base equifrequent spring.

2. Spring vibration isolator for technological equipment with variable weight according to claim 1, characterized in that the cylindrical damper is made in the form of conically and cylindrical helical springs connected in series, the turns of which are coated with an elastomer layer, for example polyurethane.