SU838170A1

SU838170A1 - Pneumatic support

Info

Publication number: SU838170A1
Application number: SU792830980A
Authority: SU
Inventors: Владлен Михайлович Голощапов; Александр Иванович Клименко; Александр Александрович Сидоренко; Дмитрий Евгеньевич Чегодаев
Original assignee: Куйбышевский Ордена Трудового Красногознамени Авиационный Институт Им.Академика C.П.Королева
Priority date: 1979-10-24
Filing date: 1979-10-24
Publication date: 1981-06-15

Description

(54) ПНЕВМООПОРА(54) PNEUMOOPORA

1one

Изобретение относитс к демпфер ным устройствам использующим жидкост или газ, и может быть использовано-во многих област х народного хоз йства при виброизол ции различных устройств ..The invention relates to damping devices using a liquid or gas, and can be used in many areas of the national economy in the vibration isolation of various devices.

Наиболее близким к изобретению вл етс пневмоопора, содержаща корпус, разделенный перегородкой на две св занные между собой посредством дросселирующего элемента полости одна из которых вл етс демпферной а друга - рабочей, поршень, установленный в рабочей полости, и автоматический регул тор уровн в виде золотника 1 .Closest to the invention is a pneumatic support, comprising a body divided by a partition into two cavities interconnected by means of a throttling element cavity, one of which is damping and the other a working one, a piston installed in the working cavity, and an automatic level controller in the form of a spool 1 .

Недостатком данной пневмоопоры вл етс сравнительно небольшой частотный диапазон работы. :The disadvantage of this pneumatic support is a relatively small frequency range of operation. :

Цель изобретени - повышение эффекта демпфировани колебаний..The purpose of the invention is to increase the damping effect of vibrations.

Указанна цель достигаетс тем, что на внутренней поверхности рабочей полости выполнены упоры, в стенке ее - радиальное отверстие, а пневмоопора снабжена сильфоном, закрепленным на перегЬродке и закрытым крышкой, размещенной между упорами, ограничива эщими перемещение ее, и ;дросселирующим элементом посто нногоThis goal is achieved by the fact that there are stops on the inner surface of the working cavity, a radial hole in the wall, and a pneumatic support equipped with a bellows fixed to the reed and closed with a lid placed between the stops, limiting its movement, and;

сопротивлени , установленным в отверстии стенки и св зывающим полость сйльфона с автоматическим регул тором уровн и демпферной полостью.installed in the wall opening and connecting the cavity of the sylphone with the automatic level controller and damping cavity.

На чертеже схематически изображена пневмоопора, разрез.The drawing shows schematically pneumosupport, section.

Пневмоопора содержит корпус 1, разделенный перегородкой 2 на две св занные между собой посредством The pneumatic support comprises a housing 1 divided by a partition 2 into two interconnected by means of

o дросселирующего элемента 3 полости , одна из которых вл етс демпферной 4, а друга - рабочей 5, поршень 6, установленный в рабочей полости 5 и св занный кольцевой диа5 фрагмой 7 с корпусом 1 и рычагом 8 обратной св зи, с управл ющим золотником 9 автоматического регул тора 10 ypcjBHH. На внутренней поверхности рабочей погости 5 вы- o cavity throttling element 3, one of which is damping 4, and the other working 5, piston 6 installed in working cavity 5 and connected by ring dia 5 fragment 7 to housing 1 and feedback lever 8 to control spool 9 automatic regulator 10 ypcjBHH. On the inner surface of the working tower 5 you

ti полнены упоры 11, в стенке ее - радиальное отверстие 12, а пневмоопора снабжена сильфоном 13, закрепленным на перегородке 2 и закрытым крышкой 14, размещенной между упорами ti are full stops 11, a radial hole 12 is in its wall, and a pneumatic support is provided with a bellows 13 fixed on the partition 2 and closed with a cover 14 placed between the stops

Claims

5 11, limiting its movement, and a constant resistance throttling element 15, installed in the hole .12 of the wall 5 and - connecting via the channel 16, the cavity 17 of the earphone 13 with the automatic JKHM level regulator 10 and the damper cavity 4. The channel 18 connects damping cavity 4 pneumatic belts with automatic level 10 regulator, channel 19 connects level 10 regulator to the compressed air supply line, and channel 20: - automatic level 10 regulator with atmosphere. The device works as follows, At the initial moment The wheel b is in the lower position and the feedback lever 8 takes the control spool 9 also to the lower position, connecting the supply air compressed air to the cavities 4 and 5 and the cavity 17 of the bellows 13. The cavities are filled with compressed air, and the cavity 17 is filled the bellows 13 is faster, since the hydrodynamic sporulation of the ampli? er of the resetting element 15 of the bellows 13 is chosen to be smaller than the throttling element 3, while the cover 14 of the bellows 13 is raised to the upper stop 11 5 and contribute to the accelerated increase of the pressure level between the piston 6 and the lid 14 to the working and weighing of the depreciable object. Upon further filling of the volumes in the cavities 5 and 17, the pressure levels off, and the cover 14 of the bellows 13. Occupies a middle position between the stops 11. When the weight of the object decreases, the piston 6 rises, equalizing the valve 9 connects the channel 16 to the channel 20, which informs the automatic a level 10 regulator with the atmosphere; release compressed air from the cavities until the object returns to a predetermined initial position of static equilibrium. When the base of the device oscillates (for example, a kinematic perturbation scheme when it moves upwards, the supported object, due to its inertia, tends to maintain its original position, as a result of which in the working cavity 5 the gas is additionally compressed by reducing the volume in the working cavity 5 and overpressure in relation to pressure at a steady-state equilibrium and relative to (pressure in the cavity 17 of the bellows 1). As a result, the cover 14 of the bellows 13 moves downwards. It diminishes the volume of the working cavity 5, decreases the pressure of the Lenin B and keeps the depreciable object in its original position. Simultaneously with this process, the energy dissipates due to the compression of gas in the cavities and; Leaks through the throttling elements 3 and 15. At moving the base of the pneumatic support down the supported object tends to maintain its original position (static equilibrium position), as a result, an increase in the volume of the working cavity 5 occurs, as a result of which the pressure in it decreases, and Excessive pressure is detected in the cavity 17 of the bellows 13 relative to the working cavity -5. As a result, the cover 14 of the bellows 13 rises up verx, reducing the volume of the cavity 5, trying to maintain pressure in it near the worker, thereby maintaining the object at the same level. At the same time, the oscillation damping occurs. by expanding the gas. cavities 4 and 5 and its overflow through throttling elements 3 and 15. When the pneumatic support operates in the high frequency range, provided Lock the throttling element 3, the pneumatic support improves the vibration damping condition by extending the current frequency range by flowing the working fluid between the cavities through the throttling constant resistance element 15. By installing the bellows into the working cavity, an increase in the damping effect occurs. Claims of the Invention A pneumatic support comprising a body divided by a partition into two cavities interconnected by means of a throttling element, one of which is a damper and the other a working one, a piston installed in the working cavity, and an automatic level controller in the form of a spool that differs from by the fact that, in order to increase the vibration damping effect, stops are made on the inner surface of the working cavity, a radial hole is in its wall, and the pneumatic support is fitted with a bellows fixed on the partition wall and The cover is located between the stops limiting its movement and the throttling element of constant resistance installed in the wall opening and connecting the bellows cavity with the automatic level control and the damper cavity. Sources of information taken into account, during the examination of the USSR Copyright No. 589479, cl. F.16 F 9/02, 1976 (prototype).