CN211175011U

CN211175011U - Static pressure thrust air-float axial bearing with hexagonal star pressure-equalizing groove

Info

Publication number: CN211175011U
Application number: CN201922309468.XU
Authority: CN
Inventors: 徐磊磊; 钟良; 崔开放; 吴星宇
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-04
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a static pressure thrust air supporting axial bearing with hexagram pressure-equalizing groove belongs to air supporting bearing technical field, including last dead push pedal and the lower thrust plate that is located the rotor both sides respectively, all there is certain clearance between rotor and the upper and lower thrust plate, this clearance is the rete of gas, all opens along the circumferencial direction on the upper and lower thrust plate and has the several air supply hole, and the air supply hole is including the air feed linkage segment, throttle section and the hexagram pressure-equalizing groove section that communicate in proper order, and the one end at hexagram pressure-equalizing groove section place is close to the rotor, hexagram pressure-equalizing groove section height is 5um-100um, and every angle of hexagram and hexagram is 60, every side length homogeneous phase equals. The utility model discloses a hexagonal star equalizer tank height is lower, and whole air film layer thickness is even, and consequently this air supporting bearing's bearing capacity, rigidity and stability are better, simple structure simultaneously, low in manufacturing cost.

Description

Static pressure thrust air-float axial bearing with hexagonal star pressure-equalizing groove

Technical Field

The utility model relates to an air supporting bearing technical field, concretely relates to static pressure thrust air supporting axial bearing with hexagonal star equalizer groove.

Background

The air bearing has the advantages of high precision, no pollution, long service life, stable work, small friction, no heat generation and the like, is widely applied to various industries, but the application range of the air bearing is limited by factors such as low bearing capacity, poor rigidity and the like. At present, researches on improvement of the bearing capacity and the rigidity of the bearing are carried out, for example, the research on the influence of the thickness of an air film on the dynamic rigidity and the damping coefficient of a cross-shaped pressure equalizing groove in a frequency domain is researched by a research study on the influence of the cross-shaped pressure equalizing groove on the dynamic performance of a plane static pressure air-float bearing which is published by Li army in the first period of 2019 by China institute of Water conservancy and hydropower science. The invention carries out series research around the pressure equalizing groove, and improves the bearing capacity and the rigidity of the air bearing by optimizing the shape, the arrangement and other parameters of the pressure equalizing groove.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problem, an object of the utility model is to provide a static pressure thrust air supporting axial bearing with hexagon star equalizer slot for during gas gets into the air film clearance through hexagon star equalizer slot, support state is stable, obtains higher bearing capacity and rigidity.

The utility model adopts the following technical proposal:

the utility model provides a static pressure thrust air supporting axial bearing with hexagram pressure cell, is including ending push pedal, rotor and thrust plate down, three then all be circular, go up the push pedal and lie in the rotor both sides respectively with thrust plate down, rotor and go up and all have certain clearance between push pedal, the thrust plate down, and this clearance is the air film layer, goes up to open along the circumferencial direction on push pedal and the thrust plate down and has the several air supply hole, the air supply hole is including the air feed linkage section, throttle section and the hexagram pressure cell section that communicate in proper order, and the one end at hexagram pressure cell section place is just to the rotor, hexagram pressure cell section height is 5um ~ 100um, and the hexagram pressure cell section is 60 for every angle of hexagram and hexagram, and every side length is equal for the air current can even distribution, and the thickness difference is less everywhere on whole air film layer, therefore stability is strong.

Preferably, the center lines of the air supply connecting section, the throttling section and the hexagram pressure equalizing groove end are positioned on the same axis, namely the three sections are arranged concentrically.

Preferably, the upper thrust plate and the lower thrust plate are provided with 1-3 rows of air supply holes around the circle center, and each row of air supply holes are uniformly distributed around the circumference.

The utility model has the advantages that:

the utility model discloses a hexagonal star equalizer groove height is lower and six angles are regular triangle structure, and whole gas film layer thickness is even, and this air supporting bearing's bearing capacity, rigidity and stability are better, simple structure simultaneously, low in manufacturing cost.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic view of a gas supply hole structure;

FIG. 3 is a distribution diagram of the gas supply holes;

in the figure, 1, an upper stop push plate; 2. a rotor; 3. a lower thrust plate; 4. a gas film layer; 5. an air supply hole;

51. a gas supply connecting section; 52. a throttling section; 53 hexagonal star pressure-equalizing groove section.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Example (b):

a static pressure thrust air-float axial bearing with a hexagram pressure-equalizing groove, as shown in figure 1, comprises an upper stop push plate 1, a rotor 2 and a lower thrust plate 3, wherein the upper stop push plate 1, the rotor 2 and the lower thrust plate 3 are all round, the upper stop push plate 1 and the lower thrust plate 3 are respectively positioned at two sides of the rotor 2, a certain gap is formed between the rotor 2 and the upper stop push plate 1 and between the rotor 2 and the lower thrust plate 3, the gap is an air film layer 4, the total thickness of the two air film layers 4 is 10-35 um, and a plurality of upper air supply holes 5 are formed in the upper stop push plate 1 and the lower; as figure 2, the air supply hole 5 is including the air supply linkage segment 51 that communicates in proper order, throttle section 52 and hexagram pressure-sharing groove section 53, and three-section central line is located same axis, the one end at hexagram pressure-sharing groove section 53 place is close to rotor 2 on the air supply hole 5, hexagram pressure-sharing groove section 53 highly is 5um ~ 100um, hexagram pressure-sharing groove section 53 is 60 for every angle of hexagram and hexagram, every side length is the same, make the distribution that the air current can be even, whole air film layer thickness difference everywhere is less.

As shown in fig. 3, 2 rows of air supply holes 5 are arranged on the upper stop push plate 1 and the lower stop push plate 3 around the center of circle, 5 air supply holes 5 are arranged in each row, and the air supply holes 5 are uniformly distributed around the circumference.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. The utility model provides a static pressure thrust air supporting axial bearing with hexagonal star equalizer slot, includes that the circular shape goes up the dead push pedal, rotor and thrust plate down, goes up the dead push pedal, thrust plate is located the rotor both sides respectively down, and the rotor all has certain clearance between with last dead push pedal, the thrust plate down, and this clearance is the air film layer, goes up to open along the circumferencial direction on dead push pedal and the thrust plate down and has the several air supply hole, its characterized in that, the air supply hole is including the air feed linkage section, throttle section and the hexagonal star equalizer slot section that communicate in proper order, and the one end at hexagonal star equalizer slot section place is just right the rotor, hexagonal star equalizer slot section height is 5um ~ 100um, and hexagonal star equalizer slot section is 60 for every angle of hexagonal star and hexagonal star, and every side length all equals, the gross thickness of air film layer is 10um ~ 35 um.

2. The hydrostatic thrust aerostatic axial bearing with hexagram pressure-equalizing grooves according to claim 1, wherein the centerlines of the gas supply connection section, the throttling section, and the hexagram pressure-equalizing groove section are located on the same axis.

3. The static pressure thrust air-float axial bearing with the hexagram pressure-equalizing groove as claimed in claim 1, wherein the upper thrust plate and the lower thrust plate are provided with 1-3 rows of air supply holes around the center of the circle, and each row of air supply holes are uniformly distributed around the circumference.