RU2015118834A

RU2015118834A - SPRING EQUIPMENT VIBRATION ISOLATOR

Info

Publication number: RU2015118834A
Application number: RU2015118834A
Authority: RU
Inventors: Татьяна Дмитриевна Ходакова
Original assignee: Татьяна Дмитриевна Ходакова
Priority date: 2015-05-20
Filing date: 2015-05-20
Publication date: 2016-12-10
Also published as: RU2015118834A3

Abstract

1. Пружинный равночастотный виброизолятор, 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 Рсоответственно минимальная и максимальная нагрузки, при которых сохраняются условия равночастотности; Р - нагрузка, удовлетворяющая условию P≤Р≤Р;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 на опорной пластине виброизолятора верхнего фланца равночастотной пружины закреплен виброизолируемый объект с переменной технологической массой, а 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 платформой виброизолятора, а под упругим основанием нижнего фланца равночастотной пружины, осесимметрично ей, размещен цилиндроконический демпфер, например из эластомера, установленный своей цилиндрической частью на нижней платформе каждого виброизолятора, а коническая часть связана с упругим основанием равночастотной пружины.2. Пружинный равночастотный виброизолятор по п. 1, отличающийся тем, что цилиндроконический демпфер, размещенный между упругим основанием нижнего фланца равночастотной пружины, и1. A spring equal-frequency vibration isolator 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, for account of its precipitation δ: where Ри Рс is the minimum and maximum load, 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 on the support plate the vibration isolator of the upper flange of the equal-frequency spring is fixed to a vibration-isolating object with a variable technological mass, and the lower flange of the equal-frequency spring of the vibration isolator is fixed to an elastic base, which ohm of at least three struts with screws and with elastic bushings coaxially located outside the struts, connected to 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. An equal-frequency spring vibration isolator according to claim 1, characterized in that a cylindrical-conical damper located between the elastic base of the lower flange of the equal-frequency spring, and

Claims

1. A spring equal-frequency vibration isolator 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 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 vibroisolated system when the mass of this system changes within specified limits, characterized in that a vibroisolated object with a variable is fixed on the base plate of the vibration isolator of the upper flange of the equal-frequency spring the technological mass, and the lower flange of the equal-frequency spring of the vibration isolator is fixed on an elastic base, which, through at least three racks with screws and with coaxially located outside the struts, elastic bushings, connected to 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 of elastomer, mounted with its cylindrical part on the lower platform of each vibration isolator, and the conical part is connected with elastic base of equal frequency spring.

2. The spring-loaded equal-frequency vibration isolator according to claim 1, characterized in that the cylindrical cone damper located between the elastic base of the lower flange of the equal-frequency spring and the lower platform of the vibration isolator is combined, while the cylindrical part located on the lower platform of the vibration isolator is made in the form of a cylindrical screw springs, and the conical part - in the form of a conical coil spring, while the screw surfaces of the damper springs are covered with a layer of vibration damping material.

3. A spring-loaded vibration isolator for technological equipment with variable weight according to claim 2, characterized in that as a vibration-damping material covering the outer surfaces of the cylindrical and conical helical springs of the cylinder-conical damper, vibration-damping mastic of the “VD-17” type is used.