SU830030A1

SU830030A1 - Gasodynamic thrust bearing

Info

Publication number: SU830030A1
Application number: SU792801410A
Authority: SU
Inventors: Наталья Евгеньевна Захарова; Евгений Петрович Маханьков; Арсений Николаевич Брагин; Виктор Георгиевич Баранов
Original assignee: Предприятие П/Я А-1665
Priority date: 1979-07-24
Filing date: 1979-07-24
Publication date: 1981-05-15

Description

1one

Изобретение относитс к машиностроению и может быть использовано в опорных узлах высокоскоростных . машин,The invention relates to mechanical engineering and can be used in high-speed support assemblies. cars,

Известен газодинамический подп тник , содержащий опорную плату и профилированные упругие лепестки. При этом опорна плата выполнена в виде двух концентричных колец, соединенных между собой радиальными перемычками, а упругие лепестки, профилированные в окружном направлении , жестко смонтированы на упом нутых радиальных перемычках р..The gas dynamic suppressor is known, which contains a base plate and profiled elastic petals. In this case, the support plate is made in the form of two concentric rings interconnected by radial bridges, and elastic petals profiled in the circumferential direction are rigidly mounted on the mentioned radial bridges p.

Однако известный.подп тник обладает недостаточной несущей способностью , так как часть опорной площади , зан той внутренним кольцом и радиальными перемычками платы, исключена из рабочей несущей поверхности подп тника.However, the well-known sub-cap has insufficient bearing capacity, since a part of the bearing area occupied by the inner ring and radial jumpers of the board is excluded from the working bearing surface of the sub-cap.

Цель изобретени - повышение несущей способности подп тника.The purpose of the invention is to increase the bearing capacity of a bout.

Указанна цель достигаетс тем что каждый профилированный упругий лепесток имеет консольно расположенный крепежный выступ, а опорна плата выполнена с кольцевой опорной поверхностью,, на которой жестко смонтированы крепежные выступыThis goal is achieved by the fact that each profiled elastic petal has a cantilevered mounting protrusion, and the baseplate is made with an annular support surface, on which the mounting protrusions are rigidly mounted.

упругих лепестков, кроме того, профиль поперечного сечени упругого лепестка выполнен в виде дут переменной высоты, при этом образующие указанного профип имеют с плоскостью опорной платы угол, вершина которого обращена к центру подп тника .the elastic petals, in addition, the cross-sectional profile of the elastic petal is made in the form of blows of variable height, while the generators of this profi have an angle with the plane of the baseplate, whose apex is facing the center of the bolster.

На фиг. 1 изображен газодинамичес0 кий подп тник, в плане; на фиг. 2 сечение А-А на фйг.1; на, фиг. 3 упругий лепесток, оксонометрическгш проекци .FIG. 1 shows a gas-dynamic plate, in plan; in fig. 2 section A-A on fig.1; in FIG. 3 elastic petal, oxonometric projection.

газодинамический подп тник содержит опорную плату 1 и упругие лепест ки 2, казвдый из которых имеет кон .сально расположенный крепежный выступ 3, жестко смонтированный на кольцевой опорной поверхности 4 пла0 ты 1. Профиль поперечного сечени упругого лепестка 2 выполнен в виде дуги 5 переменной высоты, при этом. образу1св;дие 6 профил имеют с плоскостью опорной платы 1 угол, вершинаthe gas dynamic suppressor contains a base plate 1 and elastic lobes 2, each of which has a fastener protrusion 3 that is located rigidly mounted on the annular support surface 4 of plate 1. The cross section of the elastic lobe 2 is made in the form of an arc 5 of variable height, wherein. image; cue 6 profiles have 1 angle with the plane of the baseplate;

5 7 которого обращена к центру подп тника . . . 5 7 of which is facing the center of the bolster. . .

Claims

The elastic petals are distributed around the circumference of the subcamera and fastened with fastening lugs 3 on the support plate 1 using, for example. spot welding. When the elastic petals 2 are mounted on the baseplate 1, their working areas overlap each other, forming a continuous row of wedges on which elevated pressure zones arise during the rotation of the notch (not shown), ensuring the separation of the item from the liner. The fastening lugs 3 are placed outside the working area, since they are mounted on the annular supporting surface 4 of the board 1. Such an arrangement of the fastening lugs 3 allows the entire surface of the fascia to be fully used for. creating the ability, since in the support board 1 there are no radial bridges that increase the stiffness of the bolster and lead to an off-design reduction in the thickness of the gas layer near the joints of the radial and ring bridges of the baseplate 1 Radial profiling is made so that the deflection of the sections of the profile located on the outer diameter of the subgun exceeds the deflection of the sections located on the inner diameter of the subgun, while forming the profile b with the base plate 1 an acute angle with the tip 7 facing the center of the sub nickname (to the axis of rotation). Such profiling ensures a uniform deformation of the elastic petals 2 under the action of gas forces. These si are maximal on the outer diameter of the ticker, where the deflection is larger, and minimal on the inner diameter. The cantilever fastening and the described shaping of the elastic petals 2 lower their self-installation, which compensates for the deformation of the elements of the building or field. The invention makes it possible to increase the bearing capacity of the bolster with a simultaneous simplification of its design. Claim 1. Gas dynamic suppressor containing a base plate and profiled elastic petals, which are tactile and so that, in order to increase the carrying capacity, each profiled elastic petal has a cantilevered mounting tab, and the base plate is made with an annular a supporting surface on which mounting lugs of elastic petals are rigidly mounted.

2. A sub-cap according to claim 1, in connection with the fact that, in order to optimize the gap profile in the radial direction of the sub-cap, the cross-sectional profile of the elastic petal is made in the form of an arc of variable height, thus forming the specified profile have an angle with the plane of the baseplate, the vertex of which. facing the center of the sub-com. Sources of information taken into consideration during the examination 1. USSR author's certificate No. 637563, cl. F 16 C 17/08, 1976.

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