CN219733965U - Anti-vibration bidirectional air bearing - Google Patents

Abstract

The utility model relates to the technical field of air bearings, and discloses an anti-vibration bidirectional air bearing which comprises a bearing outer ring, wherein an air inlet hole is formed in the outer side of the bearing outer ring, a bearing inner ring is arranged on the inner side of the bearing outer ring, a through hole is formed in the outer side of the bearing inner ring, and a nozzle is arranged on the inner side of the bearing inner ring. This two-way air bearing of antidetonation, through the entering of air, the relative slip carries out lubrication action and partial vibrations offset effect between bearing inner race and the damper, and under the effect of ball, be favorable to reducing the frictional force that the relative slip produced between bearing inner race and the damper, improve life, when receiving vibrations, avoid influencing air bearing's stability, through damping rubber piece and the effect of spring down cushion the shock attenuation, eliminate the vibrations that receive, simultaneously through the dismouting to the stopper, be favorable to quick replacement damper or inspection maintenance, convenient and fast.

Description

Anti-vibration bidirectional air bearing

Technical Field

The utility model relates to the technical field of air bearings, in particular to an anti-vibration bidirectional air bearing.

Background

An air bearing refers to a sliding bearing using a gas as a lubricant. Air is less viscous than oil, resistant to high temperature and pollution-free, so that the air bearing can be used in high-speed machines, instruments and radioactive devices, but has lower load capacity than oil, and the air bearing is divided into three main categories: aerostatic bearings, aerodynamic bearings and squeeze film bearings.

Today's air bearing's application and extensively, but when using, under high-speed rotation, the air pivot can receive external vibrations to cause the influence, leads to the device atress unbalanced, damages air bearing and device easily, and when the maintenance air bearing of needs inspection simultaneously, the dismouting is comparatively troublesome, is unfavorable for quick check change.

The prior art scheme (Chinese patent publication No. CN 201822267447.1) discloses an anti-vibration bidirectional air bearing, and the micro-vibration phenomenon of the bearing body is reduced or eliminated through the control of micro-vibration of a resonant plate. The radial orifices and the deflection orifices are staggered. The radial throttling rings and the deflection throttling rings which are arranged in a staggered manner can better mutually cooperate to offset the micro-vibration generated by the radial throttling rings to a certain extent, and in the comparison patent, although the vibration of the air bearing can be eliminated, the vibration of the air bearing can be easily caused to be loosened or damaged due to the influence of the vibration when the air bearing is used for a long time, and the vibration-damping device is inconvenient to assemble and disassemble and is not beneficial to replacement when the air bearing is required to be checked and maintained.

Disclosure of Invention

(one) solving the technical problems

The utility model aims to provide an anti-vibration bidirectional air bearing, which aims to solve the problems that the prior art proposes that the application of the air bearing is wide, but when the anti-vibration bidirectional air bearing is used, an air rotating shaft is influenced by vibration generated by the outside under the condition of high-speed rotation, so that the stress of the device is unbalanced, the air bearing and the device are easy to damage, and meanwhile, when the air bearing needs to be checked and maintained, the disassembly and the assembly are troublesome, and the quick checking and the replacement are not facilitated.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an anti-vibration bidirectional air bearing, includes the bearing outer lane, the inlet port has been seted up in the outside of bearing outer lane, the inboard of bearing outer lane is provided with the bearing inner circle, the through-hole has been seted up in the outside of bearing inner circle, the inboard of bearing inner circle is provided with the nozzle, the spout has been seted up to the inboard of spout, the downside fixed mounting of damper has the stop collar, the air vent has been seted up in the outside of stop collar, the spacing groove has been seted up to the positive side of bearing inner circle, the inboard block of spacing groove is connected with the stopper, through the entering of air, the relative slip between bearing inner circle and the damper, lubricate effect and partial vibrations offset effect, and under the effect of ball, be favorable to reducing the frictional force that the relative slip produced between bearing inner circle and the damper, improve life, when bearing outer lane receives vibrations, in order to avoid influencing air bearing's stability, through the shock absorber rubber piece, and the effect of spring down cushion the shock attenuation, eliminate the vibrations that receive, through the dismouting to the stopper is favorable to quick replacement damper or maintenance, convenient and fast simultaneously.

Preferably, the six air inlets, the through holes and the air guide holes are respectively arranged, and the air inlets, the through holes and the air guide holes are respectively arranged on the inner sides of the bearing outer ring, the bearing inner ring and the limiting sleeve in an annular equidistant manner, so that air circulation is facilitated.

Preferably, the through holes and the nozzles are formed in six groups, and the through holes are formed in an inclined angle, so that lubrication is facilitated.

Preferably, the positive side of stop collar fixed mounting has aggravates the cover, six annular equidistance exhaust holes of arranging have been seted up to the positive side of stop collar, are favorable to increasing the weight of stop collar through aggravating the cover, improve the stability of device.

Preferably, the damping mechanism comprises a fixed block, a damping rubber pad, a telescopic rod, a damping rubber block, balls and springs, wherein the top side of the fixed block is provided with a groove, and the damping rubber block is of an arc-shaped structure, so that the damping rubber block is favorable for buffering and eliminating vibration.

Preferably, six limit grooves are formed, the limit grooves are distributed on the positive side of the bearing inner ring at equal intervals, and the size of each limit groove is matched with that of the damping mechanism, so that the limit sleeve can be disassembled and assembled quickly.

Compared with the prior art, the utility model has the beneficial effects that:

this two-way air bearing of antidetonation, through the entering of air, the relative slip carries out lubrication action and partial vibrations offset effect between bearing inner race and the damper, and under the effect of ball, be favorable to reducing the frictional force that the relative slip produced between bearing inner race and the damper, improve life, when receiving vibrations, avoid influencing air bearing's stability, through damping rubber piece and the effect of spring down cushion the shock attenuation, eliminate the vibrations that receive, simultaneously through the dismouting to the stopper, be favorable to quick replacement damper or inspection maintenance, convenient and fast.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of a front cross-sectional structure of the present utility model;

fig. 3 is an enlarged schematic view of the structure of the point a of the present utility model.

In the figure: 1. a bearing outer ring; 2. an air inlet hole; 3. a bearing inner ring; 4. a through hole; 5. a nozzle; 6. a chute; 7. a damping mechanism; 8. a limit sleeve; 9. an air guide hole; 10. a limit groove; 11. a limiting block; 12. a weighting sleeve; 13. an exhaust hole; 701. a fixed block; 702. a groove; 703. a damping rubber pad; 704. a telescopic rod; 705. damping rubber blocks; 706. a ball; 707. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides an anti-vibration bidirectional air bearing, including bearing outer lane 1, the inlet port 2 has been seted up in the outside of bearing outer lane 1, the inboard of bearing outer lane 1 is provided with bearing inner race 3, through-hole 4 has been seted up in the outside of bearing inner race 3, the inboard of bearing inner race 3 is provided with nozzle 5, spout 6 has been seted up to the inboard of bearing inner race 3, the inboard of spout 6 is provided with damper 7, damper 7's bottom side fixed mounting has stop collar 8, air vent 9 has been seted up in the outside of stop collar 8, limit groove 10 has been seted up to the positive side of bearing inner race 3, limit groove 10's inboard block is connected with stopper 11, when receiving vibrations, avoid influencing air bearing's stability, through damping rubber piece 705, and under the effect of spring 707, eliminate the vibrations that receive, simultaneously through the dismouting to stopper 11, be favorable to quick replacement damper 7 or inspection maintenance, it is convenient and fast;

six air inlets 2, through holes 4 and air guide holes 9 are respectively formed, the air inlets 2, the through holes 4 and the air guide holes 9 are respectively distributed in an annular equidistant manner on the inner sides of the bearing outer ring 1, the bearing inner ring 3 and the limiting sleeve 8, the through holes 4 and the nozzles 5 are a group of six groups, the through holes 4 are formed in an inclined angle, the weighting sleeve 12 is fixedly arranged on the front side of the limiting sleeve 8, six annular equidistant-distributed air exhaust holes 13 are formed on the front side of the limiting sleeve 8, and through the entering of air, the bearing inner ring 3 and the damping mechanism 7 relatively slide to perform lubrication action and partial vibration counteracting action;

the damping mechanism 7 comprises a fixed block 701, a damping rubber pad 703, a telescopic rod 704, a damping rubber block 705, balls 706 and springs 707, wherein the top side of the fixed block 701 is provided with grooves 702, the damping rubber block 705 is of an arc-shaped structure, six limit grooves 10 are always arranged on the positive side of the bearing inner ring 3 at equal intervals, the size of each limit groove 10 is matched with the damping mechanism 7, and under the action of the balls 706, the friction force generated by relative sliding between the bearing inner ring 3 and the damping mechanism 7 is reduced, and the service life is prolonged.

Working principle: firstly, in the use process, air is introduced through the air inlet hole 2 on the bearing outer ring 1, then the bearing inner ring 3 is rotated under high-speed rotation to enable the through hole 4 to be in butt joint with the air inlet hole 2 and convey air to the outer side cavity of the limiting sleeve 8 through the nozzle 5, at the moment, under the action of the nozzle 5, the damping mechanism 7 is pushed to rotate, so that the bearing inner ring 3 and the damping mechanism 7 relatively slide, lubrication effect and partial vibration counteracting effect are achieved, friction force generated by the relative sliding between the bearing inner ring 3 and the damping mechanism 7 is reduced under the action of the ball 706, the service life is prolonged, when the bearing outer ring 1 is subjected to vibration, the vibration is eliminated through the damping rubber block 705 and the left and right lower part of the spring 707 in a buffering and damping mode, and meanwhile the dismounting of the limiting block 11 is beneficial to the quick replacement of the damping mechanism 7 or the inspection and maintenance, and convenience and quickness are achieved.

Finally, it should be noted that the above description is only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and that the simple modification and equivalent substitution of the technical solution of the present utility model can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present utility model.

Claims (6)

1. The utility model provides an anti-vibration bidirectional air bearing, includes bearing outer lane (1), its characterized in that: the novel bearing is characterized in that an air inlet hole (2) is formed in the outer side of the bearing outer ring (1), a bearing inner ring (3) is arranged on the inner side of the bearing outer ring (1), a through hole (4) is formed in the outer side of the bearing inner ring (3), a nozzle (5) is arranged on the inner side of the bearing inner ring (3), a sliding groove (6) is formed in the inner side of the bearing inner ring (3), a damping mechanism (7) is arranged on the inner side of the sliding groove (6), a limiting sleeve (8) is fixedly arranged on the bottom side of the damping mechanism (7), an air guide hole (9) is formed in the outer side of the limiting sleeve (8), a limiting groove (10) is formed in the positive side of the bearing inner ring (3), and a limiting block (11) is connected to the inner side of the limiting groove (10).

2. The anti-vibration bi-directional air bearing of claim 1 wherein: six air inlets (2), through holes (4) and air guide holes (9) are respectively formed, and the air inlets (2), the through holes (4) and the air guide holes (9) are respectively distributed on the inner sides of the bearing outer ring (1), the bearing inner ring (3) and the limiting sleeve (8) in an annular equidistant mode.

3. An anti-vibration bi-directional air bearing according to claim 2, wherein: six groups of through holes (4) and nozzles (5) are arranged in a group, and the through holes (4) are formed in an inclined angle.

4. A vibration-resistant bi-directional air bearing according to claim 3, wherein: the positive side of stop collar (8) fixed mounting has aggravate cover (12), six exhaust holes (13) that annular equidistance was arranged are seted up to the positive side of stop collar (8).

5. The anti-vibration bi-directional air bearing of claim 4 wherein: the damping mechanism (7) comprises a fixed block (701), a damping rubber pad (703), a telescopic rod (704), a damping rubber block (705), balls (706) and a spring (707), wherein a groove (702) is formed in the top side of the fixed block (701), and the damping rubber block (705) is of an arc-shaped structure.

6. The anti-vibration bi-directional air bearing of claim 5 wherein: six limit grooves (10) are formed, the limit grooves are distributed on the positive side of the bearing inner ring (3) at equal intervals, and the size of each limit groove (10) is matched with that of the damping mechanism (7).