RU2015100066A

RU2015100066A - KOCHETOV SPRING VIBRATOR FOR TECHNOLOGICAL EQUIPMENT WITH VARIABLE WEIGHT

Info

Publication number: RU2015100066A
Application number: RU2015100066A
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: RU2597688C2

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 P из заданного диапазона: P≤P≤P, за счет своей осадки δ:где Pи P- соответственно минимальная и максимальная нагрузки, при которых сохраняются условия равночастотности; P - нагрузка, удовлетворяющая условию P≤P≤P;δ- заданная начальная осадка пружины, отвечающая минимальной нагрузке P, 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 нижней платформой1. 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≤ P≤P, due to its precipitation δ: where P and P- the minimum and maximum loads, respectively, 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 a support plate, and on a supporting platform, by means of fasteners, a vibration-insulated object with a variable technological mass is fixed, with what is the platform connected to 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 that cover 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 mounted on an elastic base, which, by means of at least three struts with screws and with a coaxial ladder racks, elastic bushings, connected to the lower platform

Claims

1. 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 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 the 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, covering the adjustment bolts with nuts, 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 posts with screws and with coaxially located outside the posts, elastic bushings, connecting but with the lower platform of the vibration isolator, and under the elastic base of the lower flange of the equal-frequency spring, axisymmetrically placed a cylindrical damper, for example, from an elastomer mounted with its cylindrical part on the lower platform of each vibration isolator, and the conical part is connected with the elastic base of the equal-frequency spring.

2. Vibration isolating system 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.

3. Vibration isolating system for technological equipment with variable mass according to claim 1, characterized in that the elastic base 1, on which the lower flange of the equal-frequency spring 3 of the vibration isolator is fixed, is made combined, consisting of alternating layers of elastic material, for example, sheet spring steel, and layers of vibration-damping material, for example, hard grades of vibration-damping materials, such as plastic compound like “Agate”, “Anti-vibration”, “Shvim”.