WO2021036657A1

WO2021036657A1 - High-speed bearing capable of self-activated spraying of oil mist lubrication, lubricating method, and application

Info

Publication number: WO2021036657A1
Application number: PCT/CN2020/105456
Authority: WO
Inventors: 张志刚
Original assignee: 张志刚
Priority date: 2019-08-30
Filing date: 2020-07-29
Publication date: 2021-03-04

Abstract

A high-speed bearing capable of self-activated spraying of oil mist lubrication, a lubricating method, and an application for motors. The high-speed bearing comprises an outer annular sleeve (8) and an inner annular member (4). Two ends of the outer annular sleeve (8) are connected to the inner annular member (4) via non-contact type sealing components (3). An oil storage space (10) and a retaining frame (6) are provided between the outer annular sleeve (8) and the inner annular member (4). The oil storage space (10) and the retaining frame (6) are located between two sealing components (3). A rolling member (2) is provided on the retaining frame (6). The oil storage space (10) corresponds to a side of the retaining frame (2) provided with the rolling member (2). The bearing has advantages of structural simplicity, a long service life under high-speed and ultra high-speed operations, simple construction of a lubrication system, low lubricant consumption, an eliminated need of compressed air, etc. Disposing the bearing at two sides of a motor rotor improves the rotation speed of the motor without using a complex lubrication system or consuming a large amount of lubricant.

Description

Self-excited oil mist jet lubrication high-speed bearing, lubrication method and application

Technical field

The invention relates to the technical field of bearings, in particular to a self-excited oil mist spray lubrication high-speed bearing, a lubrication method and application.

Background technique

When the rolling bearing is running at high speed, the friction and collision between the rolling element and the raceway, the contact and friction between the rolling element and the cage, and the viscous resistance of the lubricant will generally generate a lot of heat, which will increase the temperature of the contact part. , Causing thermal deformation, directly reducing the working accuracy of the bearing; in severe cases, it may even cause the bearing's thermal seizure, resulting in damage to the bearing. A reasonable lubrication system must be used to reduce friction.

It is generally believed that the choice of high-speed rolling bearing lubrication method is related to the bearing speed, load, allowable temperature rise, and bearing type, and can be selected according to the _{value of d m} n (d _m is the pitch circle diameter of the bearing rolling body; n is the working speed). High speed rolling bearing grease lubrication can only be used where the value of d _m n ≤1.3 × 10 ^6, and when the value of d _m n ≥1.3 × ⁶ 10, the high-speed rolling bearings can only use oil lubrication. The existing thin oil lubrication methods for high-speed rolling bearings include oil mist lubrication (d _m n value ≤ 1.8×10 ⁶ ), oil-air lubrication (d _m n value ≤ 2.0×10 ⁶ ), and under-ring lubrication (d _m n value ≤ 3.0× 10 ⁶ ), jet lubrication (d _m n value ≤3.0×10 ⁶ ); the above four thin oil lubrication methods have many problems such as complex structure, high energy consumption of compressed air, high fuel consumption, and large pollution. Their applications The range is also greatly limited; other available bearing types are also greatly restricted in application, such as magnetic bearings are too expensive to purchase, low carrying capacity, and too sensitive to temperature; compressed air consumption of air bearings, carrying capacity low.

In the existing bearing technology, the belt-driven double-row ball rotor bearing is a kind of bearing with a unique lubrication principle that uses thin oil lubrication to run in a higher speed area. The bearing lubricant is initially installed as grease, and subsequently added Lubricating oil, there is a typical explanation for this: after the grease is used for a period of time, the base oil contained in it will be lost, and some base oil needs to be replenished regularly to maintain the performance of the original grease.

It should be pointed out that when the basic type of the existing rotor bearing was designed, thin oil lubrication was not considered. It was only because the speed of grease lubrication could not go up, it was forced to change to thin oil lubrication. Therefore, until now, the rotor bearing still retains many structural features, lubrication concepts and maintenance habits suitable for grease lubricated bearings, and cannot fully adapt to thin oil lubrication.

The existing double-row ball rotor bearings have the following problems: First, due to the limitations of structure, space location, transmission mode and rotor dynamics, it is difficult for the existing double-row ball rotor bearings to achieve a rotation speed of more than 110,000 rpm directly driven by a motor. (d _m n value ≥ 1.55×10 ⁶ ); second, because the internal structure of the existing double-row ball rotor bearing is only suitable for horizontal working conditions, thin oil loss is serious when used in vertical and inclined working conditions; third, Since the existing double-row ball rotor bearing adopts the deep groove ball method, its axial bearing capacity is limited and its axial accuracy is also poor; fourth, the existing double-row ball rotor bearing lubrication theory is very confusing, leading to long-term related technologies Stagnation.

Summary of the invention

In view of the deficiencies in the aforementioned background technology, the present invention proposes a self-excited oil mist spray lubrication high-speed bearing, a lubrication method and application.

The technical scheme of the present invention is realized as follows: a self-excited oil mist spray lubrication high-speed bearing, comprising an outer ring sleeve and an inner ring body, both ends of the outer ring sleeve are connected with the inner ring body through a non-contact type sealing assembly, and the outer ring sleeve There is an oil storage space and a cage between the inner ring and the inner ring body. The oil storage space and the cage are located between the two sealing components. The cage is provided with at least one ring of rolling elements. The oil storage space and the cage are provided with rolling elements. One side of the body corresponds.

A lubrication hole is provided on the sleeve wall of the outer ring sleeve, and the lubrication hole is communicated with the oil storage space.

The cage is provided with a half-open pocket for positioning the rolling body, the side of the cage with the pocket is an open side, and the open side faces the oil storage space.

The inner wall of the outer ring sleeve is provided with an outer raceway, the outer wall of the inner ring body is provided with an inner raceway, and the rolling bodies are respectively matched with the outer raceway and the inner raceway.

The sealing assembly includes an inner flat gasket, an outer flat gasket and a special-shaped sealing element. The special-shaped sealing element is located between the inner flat gasket and the outer flat gasket. An O-shaped sealing ring is arranged between the special-shaped sealing element and the outer ring sleeve. A retaining ring is arranged at the outer end, and the retaining ring is clamped between the outer ring sleeve and the inner ring body through a circlip.

The sealing assembly includes a gap sealing body, the gap sealing body is clamped between the outer ring sleeve and the inner ring body by a circlip, an O-shaped sealing ring is arranged between the gap sealing body and the outer ring sleeve, and the gap sealing body is opposite to the inner ring body. There is an oil groove on the inner side.

The inner ring body is a hollow separate sleeve body or forms an integral solid shaft body together with the rotating shaft; the rolling body is a sphere, a cylinder, a tapered cylinder, or a spherical roller.

When the outer ring is arranged horizontally, the oil storage space is a horizontal concave ring groove, and the horizontal concave ring groove is arranged on the inner wall of the outer ring.

When the outer snare is inclined or vertically arranged, the oil storage space is an upwardly open inclined ring groove, and the inclined ring groove is arranged on the inner wall of the outer ring.

The inner wall of the outer ring sleeve is provided with at least one inclined ring groove, and the lubricating hole is located at the upper part of the topmost inclined ring groove.

A self-excited oil mist spray lubrication method for high-speed bearings includes the following steps:

S1: Lubricating oil periodically enters between the outer ring and the inner ring body from the lubrication hole provided on the outer ring, and is stored in the oil storage space;

S2: When the inner ring body rotates at a high speed, the air surface layer on the outer surface of the inner ring also rotates at a high speed, and constantly throws out the high-energy airflow to impact the oil in the oil storage space, forming a free flying of high-energy oil particles everywhere. Jet lubrication effect, a part of high-energy oil particles are jetted to the cage, rolling elements and inner and outer raceways at high speed to force lubrication of the friction pairs composed of the cage and rolling elements, outer raceways and inner raceways to maintain the inner ring Body rotates at high speed;

S3: In step S2, when the inner ring body rotates at a high speed, a vortex sealing effect is generated at the slits adjacent to the outer surface of the inner ring body and the sealing assembly to seal the oil.

In step S1, the lubricating oil periodically enters between the outer ring sleeve and the inner ring body. It must be satisfied that sufficient lubricating oil is kept in the oil storage space when the bearing is stationary, and the lubricating oil does not pass between the seal assembly and the inner ring body. Overflow in the gap between the bearings to maintain the self-excited jet lubrication effect when the bearing is running at high speed.

The application of self-excited oil mist jet lubrication high-speed bearings in motors. When the inner ring body is a hollow and separate sleeve body, the inner ring body is placed on both sides of the motor rotor of the motor and fixedly connected with the rotating shaft. The inner ring body is fixedly connected to the rotating shaft. The surface of the hole is matched and fixedly connected with the outer surface of the rotating shaft, the inner ring body, the rotating shaft and the motor rotor rotate synchronously; when the inner ring body is an integral part of the solid shaft body, the inner ring body is placed on both sides of the motor rotor. The ring body and the rotating shaft are an inseparable integral part. The inner hole surface of the motor rotor is matched and fixedly connected with the outer surface of the rotating shaft, and the inner ring body, the rotating shaft and the motor rotor rotate synchronously.

Based on the original self-excited oil mist pressurized lubrication theory, the present invention proposes a series of new high-speed bearing structures using thin oil lubrication and the basic method of combining with the motor rotor. The d _m n corresponds to all existing thin oil lubrication methods. d _m n value range; its scope of application includes various high-speed rotating occasions such as motor direct-drive rotor bearings, high-speed electric spindles, high-speed printing rollers, energy storage flywheels, high-speed centrifuges, high-speed compressors, etc., with a wide range of applications. The invention has the advantages of simple bearing structure, high-speed and ultra-high-speed running life of the bearing, simple lubrication system, low lubricating oil consumption, minimal pollution, no need for compressed air, etc.; by rationally designing the internal structure of the bearing, it can solve the high speed of horizontal working conditions. Thin oil lubrication can also solve high-speed thin oil lubrication in vertical and inclined working conditions. In addition, the present invention uses self-excited oil mist pressurized lubrication angular thrust bearing to solve the problem of the existing deep groove ball bearing's weak axial load capacity while ensuring the lubrication effect, so that the bearing can work at a high speed.

Description of the drawings

In order to explain the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, which are common in the art. As far as technical personnel are concerned, they can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of the structure of the present invention in Embodiment 1. FIG.

FIG. 2 is a schematic diagram of the structure of the sealing assembly of the present invention in Embodiment 2. FIG.

FIG. 3 is a schematic diagram of the structure of the sealing assembly of the present invention in Embodiment 3. FIG.

FIG. 4 is a schematic diagram of the structure of the present invention in embodiment 4. FIG.

FIG. 5 is a schematic diagram of the structure of the present invention in Embodiment 5. FIG.

FIG. 6 is a schematic diagram of the structure of the present invention in Embodiment 6. FIG.

FIG. 7 is a schematic diagram of the structure of the present invention in Embodiment 7. FIG.

FIG. 8 is a schematic diagram of the structure of the present invention in Embodiment 8. FIG.

FIG. 9 is a schematic diagram of the structure of the present invention in Embodiment 9.

FIG. 10 is a schematic diagram of the structure of the present invention in Embodiment 10. FIG.

FIG. 11 is a schematic diagram of the structure of the present invention in Embodiment 11. FIG.

FIG. 12 is a schematic diagram of the structure of the present invention in Embodiment 12.

13 is a schematic diagram of the structure of the present invention in Embodiment 13.

14 is a schematic diagram of the structure of the present invention in Embodiment 14.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Embodiment 1, as shown in Figure 1, a self-excited oil mist spray lubrication high-speed bearing, including an outer ring sleeve 8 and an inner ring body 4, the inner ring body 4 is located inside the outer ring sleeve 8, the inner ring body 4 and the outer ring sleeve 8 Coaxial line setting. The inner surface of the outer ring sleeve 8 is provided with an outer raceway 19, and the outer surface of the inner ring body 4 is provided with an inner raceway 20. The outer ring sleeve 8 and the inner ring body 4 are connected by a non-contact seal assembly 3 to prevent oil from overflowing. An oil storage space 10 is provided on the inner wall of the outer ring sleeve 8. The oil storage space 10 is a horizontal concave ring groove 24, horizontal The concave ring groove 24 communicates with the lubrication hole 1 provided on the outer ring sleeve 8. The outer surface of the inner ring body 4 is provided with a cage 6. The cage 6 is evenly provided with semi-open pockets along the circumference. The side provided with the pockets is the open side 9, which faces the horizontal concave ring groove 24, and the open side 9 is an open structure that is conducive to directly receiving the lubricating oil spray. A rolling element 2 is provided in the pocket, and the rolling element 2 is a sphere. The inner ring body 4 is a hollow separate sleeve body; the inner ring body 4 and the outer ring sleeve 8 are arranged horizontally, and the outer wall of the inner ring body 4 is provided with an annular protrusion 5 corresponding to the horizontal concave ring groove 24, and the protrusion 5 The shape of the surface setting is beneficial to enhance the impact force of the air surface layer. The outer diameter d2 of the annular protrusion 5 is not less than the general diameter d1 of the inner ring body 4, and the size of d2 does not affect the free entry and exit of the inner ring body 4 inside the outer ring sleeve 8. The two ends of the inner ring body 4 respectively extend out of the outer ring sleeve 8, and the two ends of the outer ring sleeve 8 are respectively connected with the inner ring body 4 through a gap of the sealing assembly 3, that is, the outer surface of the sealing assembly 3 and the inner ring body 4 is left The slit 11 ensures that the inner ring body can rotate freely, and the horizontal concave ring groove 24 and the retainer 6 are located between the two sealing components 3. It enters the bearing from the lubrication hole 1 provided on the upper part of the outer ring sleeve, flows through the outer surface of the inner ring body 4 and is stored in the horizontal concave ring groove 24. When the inner ring body 4 rotates at a high speed, the outer surface of the inner ring body 4 is air-bound The layer also rotates at a high speed, and continuously throws out the high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming a spray effect of high-energy oil particles flying around, and a part of the high-energy oil particles are injected to the open side of the cage 9, The rolling element 2 and the inner and outer raceways forcefully lubricate the friction pairs composed of the cage 6 and the rolling elements 2, the outer raceway 19 and the inner raceway 20, and maintain the inner ring body 4 to rotate at a high speed.

Embodiment 2, as shown in Figure 2, is a self-excited oil mist spray lubrication high-speed bearing. The sealing assembly 3 includes an inner flat gasket 3-1, an outer flat gasket 3-4, and a special-shaped seal 3-2. A slit 11 is provided between the flat pad 3-1, the outer flat pad 3-4, and the special-shaped seal 3-2 and the inner ring body, which does not affect the rotation of the outer body. The special-shaped sealing element 3-2 is located between the inner flat gasket 3-1 and the outer flat gasket 3-4, and an O-shaped sealing ring 3-3 is arranged between the special-shaped sealing element 3-2 and the outer ring sleeve 8 to ensure the outer ring sleeve and the seal The tightness between components 3. The outer end of the outer flat gasket 3-4 is provided with a retaining ring 3-6, and the retaining ring 3-6 is clamped between the outer ring sleeve 8 and the inner ring body 4 through a circlip 3-5. In order to cause errors during assembly, a groove-like structure is formed at a position close to the surface of the inner ring body 4, which effectively prevents the oil from overflowing from the slit 11 between the sealing assembly 3 and the inner ring body 4.

The other structure is the same as the first embodiment.

Embodiment 3, as shown in Figure 3, a self-excited oil mist spray lubrication high-speed bearing, the sealing assembly 3 includes a gap sealing body 3-7, that is, a slit is provided between the sealing body and the inner ring body 4 11, and does not affect the rotation of the outer body. The gap sealing body 3-7 is clamped between the outer ring sleeve 8 and the inner ring body 4 by a circlip 3-5, and an O-shaped sealing ring 3-3 is arranged between the gap sealing body 3-7 and the outer ring sleeve 8 to improve the gap seal The tightness between the body 4 and the outer ring sleeve 8. An oil groove 3-8 is provided on the surface of the gap sealing body 3-7 and the inner ring body 4, and the arrangement of the oil groove can effectively prevent the oil from overflowing from the slit 11 between the sealing body and the inner ring body 4.

The other structure is the same as the first embodiment.

Embodiment 4, as shown in Fig. 4, is a self-excited oil mist spray lubrication high-speed bearing. The inner ring body of the bearing and the rotating shaft 12 together form an integral solid shaft body, and the outer ring sleeve 8 is arranged horizontally. The oil storage space 10 is a horizontal concave ring groove 24, the solid shaft is provided with an inner race 20, and the outer race is provided with an outer race 19, the cage 6 is installed on the solid shaft, and the cage 6 is provided with a pocket One side of the hole is an open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is an open structure that is conducive to directly receiving the lubricating oil spray. Rolling bodies 2 are provided in the pockets. The rolling elements 2 are matched with the inner and outer raceways respectively. The two ends of the solid shaft body can respectively extend out of the outer ring 8 to be connected with other related units; or the tail of one end can be integrally sealed inside the outer ring 8. The horizontal concave ring groove 24 and the holder 6 are located between the two sealing components 3.

The other structure is the same as that of

Embodiment

2 or 3.

Embodiment 5, as shown in Figure 5, a self-excited oil mist spray lubrication high-speed bearing, the bearing is an angular contact bearing, including an outer ring sleeve 8 and an inner ring body 4, the inner ring body 4 is connected to the rotating shaft 12 Together they form an indivisible whole solid shaft. The solid shaft body is located inside the outer ring sleeve 8, and the solid shaft body and the outer ring sleeve 8 are arranged coaxially and horizontally. The inner surface of the outer ring sleeve 8 is provided with an outer raceway 19, and the outer surface of the solid shaft body is provided with an inner raceway 20, and the rolling elements 2 are matched with the outer raceway 19 and the inner raceway 20 respectively. The axial pretension force 22 acts on the end surface 23 of the outer ring sleeve 8 so that the outer raceway 19 and the inner raceway 20 maintain a certain pretension force on the rolling element 2. The outer ring sleeve 8 and the solid shaft body are connected by a non-contact seal assembly 3 to prevent oil from overflowing. An oil storage space 10 is provided on the inner wall of the outer ring sleeve 8. The oil storage space 10 is a horizontal concave ring groove 24 with a horizontal concave The ring groove 24 communicates with the lubrication hole 1 provided on the outer ring sleeve 8. The solid shaft body is provided with a cage 6 on the outer surface of the body. The cage 6 is evenly provided with semi-open pockets along the circumference, and the cage 6 is provided with pockets. One side of the hole is an open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is an open structure that is conducive to directly receiving the lubricating oil spray. A rolling element 2 is provided in the pocket, and the rolling element 2 is a sphere. Both ends of the solid shaft body can respectively extend out of the outer ring 8 to be connected to other related units; or the tail of one end can be integrally sealed inside the outer ring 8. The horizontal concave ring groove 24 and the holder 6 are located between the two sealing components 3. The lubricating oil enters the bearing from the lubrication hole 1 provided on the upper part of the outer ring sleeve 8, flows through the outer surface of the solid shaft and is stored in the horizontal concave ring groove 24. When the solid shaft rotates at a high speed, the air on the outer surface of the solid shaft is also attached to the bearing. It rotates together at high speed and continuously throws out the high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming a spray effect of high-energy oil particles flying around, and a part of the high-energy oil particles are injected to the open side of the cage 9. Rolling elements 2 and the inner and outer raceways, the friction pairs composed of the cage 6 and the rolling elements 2, the outer raceway 19 and the inner raceway 20 are forcedly lubricated to maintain the solid shaft rotating at a high speed.

The other structure is the same as that of

Embodiment

2 or 3.

Embodiment 6, as shown in Fig. 6, is an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearings described in embodiment 4 are arranged on both sides of the motor rotor 16. The bearings are deep groove ball bearings and the rotating shaft 12 and the two inner ring bodies 4 separately arranged on both sides of the motor rotor 16 form an indivisible integral solid shaft body, the solid shaft body and the outer ring sleeve 8 are arranged horizontally, and the oil storage space 10 is a horizontal concave ring groove 24, solid An inner raceway 20 is provided on the outer surface of the shaft body, and an outer raceway 19 is provided on the inner surface of the outer ring sleeve 8. The cage 6 is mounted on a solid shaft. The side of the cage 6 with pockets is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is the opening that is conducive to directly receiving the lubricating oil spray. Type structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The inner hole of the motor rotor 16 is matched and fixedly connected with the outer surface of the solid shaft body, and the solid shaft body and the motor rotor 16 rotate synchronously. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the solid shaft from rubbing against adjacent components and hindering the rotation of the rotor. The lubricating oil enters the bearing from the lubricating hole 1 arranged on the upper part of the outer ring sleeve 8, flows through the outer surface of the inner ring body 4 and then is stored in the horizontal concave ring groove 24. The lubricating oil motor rotor 16 is driven by the electromagnetic force of the motor to drive the rotating shaft 12 Rotating at high speed with the inner ring body 4 on both sides, the air surface layer on the outer surface of the inner ring body 4 also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming high-energy oil particles The spray effect of flying around, a part of the high-energy oil particles are sprayed to the open side of the cage 9, the rolling elements 2, and the inner and outer raceways. The cage 6 and the rolling elements 2, the outer raceway 19, and the inner raceway 20 are combined. The friction pair is forced to be lubricated to maintain the inner ring body 4 to rotate at a high speed.

The other structures of the bearings on both sides of the motor rotor 16 are the same as in the fourth embodiment.

Embodiment 7, as shown in Fig. 7, a self-excited oil mist spray lubrication high-speed bearing, the bearing outer ring 8 is inclined or vertically arranged, and the oil storage space 10 is a plurality of upwardly inclined inclined ring grooves 15 which are inclined The upward inclination angle of the ring groove 15 is 5°～85°, and it is better that the oil is not easy to overflow. The oil storage space 10 can also be used under horizontal working conditions. At least one inclined ring groove 15 is provided on the inner wall of the outer ring sleeve 8, and the lubricating hole 1 is located at the upper part of the inclined ring groove 15 at the topmost end. When the lubricating oil is refueled through the lubrication hole 1, the lubricating oil should flow downward along the inner wall of the outer ring sleeve 8, gradually filling all the inclined ring grooves 15. The inner ring body 4 and the rotating shaft 12 together form an inseparable integral solid Shaft body, the outer surface of the solid shaft body is provided with an inner raceway 20, the outer ring sleeve is provided with an outer raceway 19, the cage 6 is installed on the outer surface of the solid shaft body, and the side of the cage 6 with pockets is the open side 9 , The open side 9 faces the inclined ring groove 15, and the open side 9 is an open structure that is conducive to directly receiving the lubricating oil spray. Rolling bodies 2 are provided in the pockets. The rolling elements 2 are matched with the inner and outer raceways respectively. The inclined ring groove 15 and the holder 6 are located between the two sealing components. Both ends of the solid shaft body can respectively extend out of the outer ring 8 to be connected to other related units; or the tail of one end can be integrally sealed inside the outer ring 8. When the solid shaft rotates at a high speed, the air surface layer on the outer surface of the solid shaft also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil stored in the inclined ring groove 15, forming a spray effect of high-energy oil particles flying around. , Part of the high-energy oil particles are injected to the open side of the cage 9, the rolling elements 2, the outer race 19 and the inner race 20, for forced lubrication to maintain the high-speed rotation of the solid shaft, the high-speed rotation of the internal parts of the bearing and the high-speed air attachment The layer continuously gives sufficient kinetic energy to the lubricating oil particles to maintain the high-speed movement of most lubricating oil particles inside the bearing. When the bearing stops rotating, the centrifugal force causes a considerable part of the lubricating oil to remain in the inclined ring groove 15.

The other structure is the same as that of

Embodiment

2 or 3.

Embodiment 8, as shown in Fig. 8, an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearings described in embodiment 7 are arranged on both sides of the motor rotor 16. The bearings are deep groove ball bearings and the rotating shaft 12 and the two inner ring bodies 4 separated on both sides of the motor rotor 16 form an indivisible integral solid shaft body, the solid shaft body and the outer ring sleeve 8 are inclined or vertically arranged, and the oil storage space 10 is an upwardly inclined inclined ring The groove 15 and the inclined ring groove 15 are inclined upward at an angle of 5°～85°, so that the oil is not easy to overflow. The oil storage space 10 can also be used under horizontal working conditions. There are several inclined ring grooves 15 arranged in parallel on the inner wall of the outer ring sleeve 8. The lubrication hole 1 is arranged at the top of all the inclined ring grooves 15. When the lubricating oil is added through the lubricating hole 1, the oil should be directed along the inner wall of the outer ring sleeve 8. Downstream, gradually fill up all the inclined ring grooves 15. An inner raceway 20 is provided on the outer surface of the solid shaft body, and an outer raceway 19 is provided on the inner surface of the outer ring sleeve 8. The cage 6 is mounted on a solid shaft. The side of the cage 6 with pockets is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is the opening that is conducive to directly receiving the lubricating oil spray. Type structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The inner hole of the motor rotor 16 is matched and fixedly connected with the outer surface of the solid shaft body, and the solid shaft body and the motor rotor 16 rotate synchronously. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the solid shaft from rubbing against adjacent components and hindering the rotation of the rotor. When in a vertical working condition, the rolling elements 2 of each bearing are arranged under all the inclined ring grooves 15 in the bearing.

The motor rotor 16 is driven by the electromagnetic force of the motor to drive the rotating shaft 12 and the inner ring body 4 on both sides to rotate at a high speed. The air surface layer on the outer surface of the inner ring body 4 also rotates at a high speed, and continuously throws out high-energy airflow to impact the tilt ring The oil stored in the groove 15 forms a spray effect of high-energy oil particles flying around. Part of the high-energy oil particles are injected to the open side 9 of the cage, the rolling elements 2, the outer race 19 and the inner race 20, for forced lubrication to maintain the inner The ring body 4 rotates at high speed. The high-speed rotation of the internal parts of the bearing and the high-speed air surface layer continuously give sufficient kinetic energy to the lubricating oil particles to maintain the high-speed movement of most lubricating oil particles inside the bearing. The centrifugal force acts when the bearing stops rotating. A considerable part of the lubricating oil still remains in the inclined ring groove 15.

The other structures of the bearings on both sides of the motor rotor 16 are the same as in the seventh embodiment.

Embodiment 9, as shown in Fig. 9, is a self-excited oil mist spray lubricated high-speed bearing. The bearing is an angular contact bearing and includes an outer ring sleeve 8 and an inner ring body 4. The inner ring body 4 is a hollow single sleeve body. The inner ring body 4 is located inside the outer ring sleeve 8, and the inner ring body 4 and the outer ring sleeve 8 are arranged coaxially and horizontally. Both ends of the inner ring body 4 extend out of the outer ring sleeve 8. The inner surface of the outer ring sleeve 8 is provided with an outer race 19 , The outer surface of the inner ring body 4 is provided with an inner raceway 20, and the rolling bodies 2 are matched with the outer raceway 19 and the inner raceway 20 respectively. The inner ring body 4 bears on the shaft shoulder 21, and the axial pre-tightening force 22 acts on the end surface 23 of the outer ring sleeve 8 so that the outer race 19 and the inner race 20 maintain a certain pre-tightening force on the rolling elements 2. The outer ring sleeve 8 and the inner ring body 4 are connected by a non-contact seal assembly 3 to prevent oil from overflowing. An oil storage space 10 is provided on the inner wall of the outer ring sleeve 8. The oil storage space 10 is a horizontal concave ring groove 24, horizontal The concave ring groove 24 communicates with the lubrication hole 1 provided on the outer ring sleeve 8. The outer surface of the inner ring body 4 is provided with a cage 6. The cage 6 is evenly provided with semi-open pockets along the circumference. The side provided with the pockets is the open side 9, which faces the horizontal concave ring groove 24, and the open side 9 is an open structure that is conducive to directly receiving the lubricating oil spray. A rolling element 2 is provided in the pocket, and the rolling element 2 is a sphere. The inner ring body 4 is a hollow separate sleeve body; the inner ring body 4 and the outer ring sleeve 8 are arranged horizontally. The two ends of the outer ring sleeve 8 are respectively connected with the inner ring body 4 through the gap of the sealing assembly 3, that is, there are slits 11 on the outer surface of the sealing assembly 3 and the inner ring 4 to ensure the free rotation of the inner ring body, and the horizontal concave ring groove 24 and the holder 6 are located between the two sealing components 3. The lubricating oil enters the bearing from the lubrication hole 1 provided on the upper part of the outer ring sleeve 8, flows through the outer surface of the inner ring body 4, and is stored in the horizontal concave ring groove 24. When the inner ring body 4 rotates at a high speed, the outer surface of the inner ring body 4 The air boundary layer also rotates at a high speed, and continuously throws out the high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming a spray effect of high-energy oil particles flying around, and a part of the high-energy oil particles are sprayed to the cage. Side 9, rolling element 2, inner and outer raceways, forcibly lubricate the friction pairs composed of cage 6 and rolling element 2, outer raceway 19, and inner raceway 20 to maintain the high-speed rotation of inner ring body 4.

The other structure is the same as that of

Embodiment

2 or 3.

Embodiment 10, as shown in FIG. 10, is an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearings described in Embodiment 9 are arranged on both sides of the motor rotor 16, and the bearings are angular contact bearings. The inner ring body 4 is a hollow separate sleeve body; the inner ring body 4 is separately placed on both sides of the motor rotor 16 of the motor and is fixedly connected to the rotating shaft 12, and the inner hole surface of the motor rotor 16 matches the outer surface of the rotating shaft 12 Combined with a fixed connection, the inner ring body 4, the rotating shaft 12 and the motor rotor 16 rotate synchronously; the inner ring body 4 and the outer ring sleeve 8 are arranged horizontally, the oil storage space 10 is a horizontal concave ring groove 24, and the outer surface of the inner ring body 4 is provided There is an inner raceway 20, the inner surface of the outer ring sleeve 8 is provided with an outer raceway 19, and the rolling elements 2 are matched with the outer raceway 19 and the inner raceway 20 respectively. The inner ring body 4 bears on the shaft shoulder 21, and the axial pre-tightening force 22 acts on the end surface 23 of the outer ring sleeve 8 so that the outer race 19 and the inner race 20 maintain a certain pre-tightening force on the rolling elements 2. The cage 6 is installed on the inner ring body 4, the side with pockets on the cage 6 is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is conducive to directly receiving the lubricating oil spray Open structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the inner ring body 4 from rubbing against adjacent components and hindering the rotation of the rotor.

For angular contact bearings, the axial stress generated by the front bearing 27 on the rotating shaft 12 and the axial stress generated by the rear bearing 27a on the rotating shaft 12 have opposite directions and cancel each other.

The lubricating oil enters the bearing from the lubricating hole 1 arranged on the upper part of the outer ring sleeve 8, flows through the outer surface of the inner ring body 4 and then is stored in the horizontal concave ring groove 24. The lubricating oil motor rotor 16 is driven by the electromagnetic force of the motor to drive the rotating shaft 12 Rotating at high speed with the inner ring body 4 on both sides, the air surface layer on the outer surface of the inner ring body 4 also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming high-energy oil particles The spray effect of flying around, a part of the high-energy oil particles are sprayed to the open side of the cage 9, the rolling elements 2, and the inner and outer raceways. The cage 6 and the rolling elements 2, the outer raceway 19, and the inner raceway 20 are combined. The friction pair is forced to be lubricated to maintain the inner ring body 4 to rotate at a high speed.

The other structures of the bearings on both sides of the motor rotor 16 are the same as in the ninth embodiment.

Embodiment 11, as shown in FIG. 11, is an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearings described in Embodiment 9 are arranged on both sides of the motor rotor 16, and the bearings are angular contact bearings. The rotating shaft 12 and the two inner ring bodies 4 separated on both sides of the motor rotor 16 form an indivisible integral solid shaft body. The inner hole surface of the motor rotor 16 matches and is fixedly connected with the outer surface of the solid shaft body. The motor rotor 16 rotates synchronously; the solid shaft body and the outer ring 8 are arranged horizontally, the oil storage space 10 is a horizontal concave ring groove 24, the solid shaft body is provided with an inner race 20 on the outer surface, and the outer ring 8 is provided with an outer race on the inner surface 19. The rolling elements 2 are matched with the outer raceway 19 and the inner raceway 20 respectively. The axial pretension force 22 acts on the end surface 23 of the outer ring sleeve 8 so that the outer raceway 19 and the inner raceway 20 maintain a certain pretension force on the rolling element 2. The cage 6 is mounted on a solid shaft. The side of the cage 6 with pockets is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is the opening that is conducive to directly receiving the lubricating oil spray. Type structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the solid shaft from rubbing against adjacent components and hindering the rotation of the rotor.

The lubricating oil enters the bearing from the lubricating hole 1 provided on the upper part of the outer ring sleeve 8, flows through the outer surface of the solid shaft and is stored in the horizontal concave ring groove 24. The lubricating oil motor rotor 16 is driven by the electromagnetic force of the motor to drive the solid shaft to rotate at a high speed. , The air surface layer on the outer surface of the solid shaft also rotates at a high speed, and constantly throws out the high-energy airflow to impact the oil stored in the horizontal concave ring groove 24, forming a spray effect of high-energy oil particles flying around, and a part of the high-energy oil particles Spray to the open side of the cage 9, the rolling elements 2, and the inner and outer raceways, to force the lubrication of the friction pairs composed of the cage 6 and the rolling elements 2, the outer raceway 19, and the inner raceway 20 to maintain the solid shaft at high speed Spin.

Embodiment 12, as shown in Figure 12, a self-excited oil mist spray lubrication high-speed bearing, the bearing is an angular contact bearing, the outer ring sleeve 8 is inclined or vertically arranged, and the oil storage space 10 is a plurality of upwardly inclined inclined The upward inclination angle of the ring groove 15 and the inclined ring groove 15 is 5°～85°, so that the oil is not easy to overflow. The oil storage space 10 can also be used under horizontal working conditions. At least one inclined ring groove 15 is provided on the inner wall of the outer ring sleeve 8, and the lubricating hole 1 is located at the upper part of the inclined ring groove 15 at the topmost end. When the lubricating oil is refueled through the lubrication hole 1, the lubricating oil should flow downward along the inner wall of the outer ring sleeve 8, gradually filling all the inclined ring grooves 15. The inner ring body 4 is a hollow separate sleeve body, and the outer surface of the inner ring body 4 is provided with There is an inner raceway 20, an outer raceway 19 is provided in the outer ring sleeve, and the rolling elements 2 are matched with the outer raceway 19 and the inner raceway 20 respectively. The two ends of the inner ring body 4 respectively extend out of the outer ring sleeve 8. The inner ring body 4 rests on the shoulder 21, and the axial pre-tightening force 22 acts on the end surface 23 of the outer ring sleeve 8 to make the outer race 19 and the inner race 20 Keep a certain pretension on the rolling element 2. The cage 6 is installed on the outer surface of the inner ring body 4, the side with pockets on the cage 6 is the open side 9, the open side 9 faces the inclined ring groove 15, and the open side 9 is conducive to directly receiving the lubricating oil spray Open structure. Rolling bodies 2 are provided in the pockets. The rolling elements 2 are matched with the inner and outer raceways respectively. The inclined ring groove 15 and the holder 6 are located between the two sealing components. When the bearing inner ring body 4 rotates at a high speed, the air surface layer on the outer surface of the inner ring body 4 also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil stored in the inclined ring groove 15, forming high-energy oil particles everywhere. The jet effect of flying, some high-energy oil particles are injected to the open side 9, the rolling elements 2, the outer race 19 and the inner race 20, for forced lubrication, to maintain the high-speed rotation of the inner ring body 4, and the high-speed rotation of the internal parts of the bearing. The high-speed air surface layer continuously imparts sufficient kinetic energy to the lubricating oil particles to maintain the high-speed movement of most lubricating oil particles inside the bearing. When the bearing stops rotating, the centrifugal force causes a considerable part of the lubricating oil to remain in the inclined ring groove 15 .

The other structure is the same as that of the seventh embodiment.

Embodiment 13, as shown in FIG. 13, is an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearing described in embodiment 12 is provided on both sides of the motor rotor 16. The bearing is an angular contact bearing, and the inner The ring body 4 is a hollow single sleeve body; the inner ring body 4 is placed on both sides of the motor rotor 16 of the motor and is fixedly connected to the rotating shaft 12, and the inner hole surface of the motor rotor 16 matches and is fixedly connected to the outer surface of the rotating shaft 12 , The inner ring body 4, the rotating shaft 12 and the motor rotor 16 rotate synchronously; the inner ring body 4 and the outer ring sleeve 8 are inclined or vertically arranged, the oil storage space 10 is an upwardly inclined inclined ring groove 15, and the inclined ring groove 15 is inclined upwardly The angle is 5°～85°, so the oil is not easy to overflow. The oil storage space 10 can also be used under horizontal working conditions. There are several inclined ring grooves 15 arranged in parallel on the inner wall of the outer ring sleeve 8. The lubrication hole 1 is arranged at the top of all the inclined ring grooves 15. When the lubricating oil is added through the lubricating hole 1, the oil should be directed along the inner wall of the outer ring sleeve 8. Downstream, gradually fill up all the inclined ring grooves 15. The outer surface of the inner ring body 4 is provided with an inner raceway 20, and the inner surface of the outer ring sleeve 8 is provided with an outer raceway 19. The cage 6 is mounted on a solid shaft. The side of the cage 6 with pockets is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is the opening that is conducive to directly receiving the lubricating oil spray. Type structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the solid shaft from rubbing against adjacent components and hindering the rotation of the rotor. When in an inclined or vertical working condition, the rolling elements 2 of each bearing are arranged under all the inclined ring grooves 15 in the bearing.

The other structures of the bearings on both sides of the motor rotor 16 are the same as in the twelfth embodiment.

Embodiment 14, as shown in FIG. 14, is an application of a self-excited oil mist spray lubrication high-speed bearing in a motor. The bearings described in embodiment 12 are arranged on both sides of the motor rotor 16, and the bearings are angular contact bearings. The rotating shaft 12 and the two inner ring bodies 4 separated on both sides of the motor rotor 16 form an indivisible integral solid shaft body. The inner hole surface of the motor rotor 16 matches and is fixedly connected with the outer surface of the solid shaft body. The motor rotor 16 rotates synchronously; the solid shaft body and the outer ring 8 are inclined or vertically arranged, the oil storage space 10 is an upwardly inclined inclined ring groove 15, and the inclined ring groove 15 is inclined upward at an angle of 5°～85°. It is advisable that the liquid is not easy to overflow. The oil storage space 10 can also be used under horizontal working conditions. There are several inclined ring grooves 15 arranged in parallel on the inner wall of the outer ring sleeve 8. The lubrication hole 1 is arranged at the top of all the inclined ring grooves 15. When the lubricating oil is added through the lubricating hole 1, the oil should be directed along the inner wall of the outer ring sleeve 8. Downstream, gradually fill up all the inclined ring grooves 15. An inner raceway 20 is provided on the outer surface of the solid shaft body, and an outer raceway 19 is provided on the inner surface of the outer ring sleeve 8. The cage 6 is mounted on a solid shaft. The side of the cage 6 with pockets is the open side 9, the open side 9 faces the horizontal concave ring groove 24, and the open side 9 is the opening that is conducive to directly receiving the lubricating oil spray. Type structure. There are rolling elements 2 in the pockets, the rolling elements 2 are spheres, and the rolling elements 2 are matched with the inner and outer raceways respectively. The outer ring sleeves 8 at both ends of the motor rotor need to be installed with a certain degree of coaxiality to prevent the solid shaft from rubbing against adjacent components and hindering the rotation of the rotor. When in an inclined or vertical working condition, the rolling elements 2 of each bearing are arranged under all the inclined ring grooves 15 in the bearing.

For angular contact bearings, the axial stress generated by the front bearing 27 on the solid shaft and the axial stress generated by the rear bearing 27a on the solid shaft are in opposite directions and cancel each other.

The motor rotor 16 is driven by the electromagnetic force of the motor to drive the solid shaft body to rotate at a high speed. The air surface layer on the outer surface of the solid shaft body also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil stored in the inclined ring groove 15 to form high energy The spray effect of oil particles flying around, some of the high-energy oil particles are injected to the open side of the cage 9, the rolling elements 2, the outer race 19 and the inner race 20, for forced lubrication to maintain the high-speed rotation of the solid shaft, and the internal parts of the bearing The high-speed rotation and high-speed air surface layer continuously gives sufficient kinetic energy to the lubricating oil particles to maintain the high-speed movement of most of the lubricating oil particles inside the bearing. When the bearing stops rotating, the centrifugal force causes a considerable part of the lubricating oil to remain in the tilting ring. Slot 15.

For Examples 1 to 14, the same self-excited oil mist spray lubrication method for high-speed bearings is used, including the following steps:

S1: Lubricating oil periodically enters between the outer ring 8 and the inner ring body 4 from the lubrication hole 1 provided on the outer ring 8 and is stored in the oil storage space 10;

S2: When the inner ring body 4 rotates at a high speed, the air surface layer on the outer surface of the inner ring body 4 also rotates at a high speed, and continuously throws out high-energy airflow to impact the oil in the oil storage space 10, forming high-energy oil particles everywhere The self-excited jet lubrication effect of random flying, a part of high-energy oil particles are jetted at high speed to the open side 9 of the cage 6, the rolling elements 2 and the inner and outer races, and the cage 6 and the rolling elements 2, the outer race 19, the inner rolling The friction pairs composed of the channel 20 are forced to be lubricated to maintain the high-speed rotation of the inner ring body 4;

S3: In step S2, when the inner ring body 4 rotates at a high speed, the sealing assembly 3 and the outer surface of the inner ring body 4 produce a vortex sealing effect at the slit 11 adjacent to the outer surface of the inner ring body 4 to seal the oil.

In step S1, the lubricating oil periodically enters between the outer ring sleeve 8 and the inner ring body 4, and it must be satisfied that sufficient lubricating oil is kept in the oil storage space 10 when the bearing is in a static state, and the lubricating oil does not flow from the seal assembly 3 and The slit 11 between the inner ring bodies 4 overflows, so as to maintain the self-excited jet lubrication effect when the bearing is running at high speed.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

Claims

A self-excited oil mist spray lubrication high-speed bearing, which is characterized in that it comprises an outer ring sleeve (8) and an inner ring body (4). Both ends of the outer ring sleeve (8) are connected to the inner ring through a non-contact type sealing assembly (3). The ring body (4) is connected. An oil storage space (10) and a cage (6) are provided between the outer ring sleeve (8) and the inner ring body (4). The oil storage space (10) and the cage (6) are located at the two Between the two sealing components (3), the cage (6) is provided with at least one ring of rolling elements (2), and the oil storage space (10) is opposite to the side of the cage (6) where the rolling elements (2) are provided. correspond.
The self-excited oil mist spray lubrication high-speed bearing according to claim 1, characterized in that: the outer ring sleeve (8) is provided with a lubrication hole (1), a lubrication hole (1) and an oil storage space ( 10) Connected.
The self-excited oil mist spray lubrication high-speed bearing according to claim 2, characterized in that: the cage (6) is provided with a semi-open pocket for positioning the rolling elements (2), and the cage (6) The side provided with pockets is an open side (9), and the open side (9) faces the oil storage space (10).
The self-excited oil mist spray lubrication high-speed bearing according to claim 1 or 2 or 3, characterized in that: the inner wall of the outer ring sleeve (8) is provided with an outer raceway (19), and an inner ring body (4) An inner raceway (20) is provided on the outer wall of the, and the rolling elements (2) are matched with the outer raceway (19) and the inner raceway (20) respectively.
The self-excited oil mist jet lubrication high-speed bearing according to claim 4, characterized in that: the sealing assembly (3) includes an inner flat gasket (3-1), an outer flat gasket (3-4) and a special-shaped seal (3-2), the special-shaped seal (3-2) is located between the inner flat gasket (3-1) and the outer flat gasket (3-4), between the special-shaped seal (3-2) and the outer ring sleeve (8) There is an O-shaped sealing ring (3-3) in the middle, and the outer end of the outer flat gasket (3-4) is provided with a retaining ring (3-6), and the retaining ring (3-6) is clamped by a circlip (3-5) It is fixed between the outer ring sleeve (8) and the inner ring body (4).
The self-excited oil mist jet lubrication high-speed bearing according to claim 4, characterized in that: the sealing assembly (3) includes a gap sealing body (3-7), and the gap sealing body (3-7) passes through a circlip ( 3-5) It is clamped between the outer ring sleeve (8) and the inner ring body (4). An O-ring seal (3-3) is provided between the gap sealing body (3-7) and the outer ring sleeve (8). The gap An oil groove (3-8) is provided on the inner surface of the sealing body (3-7) opposite to the inner ring body (4).
The self-excited oil mist jet lubrication high-speed bearing according to claim 1 or 5 or 6, characterized in that: the inner ring body (4) is a hollow separate sleeve body or forms a non-removable bearing with the rotating shaft (12). The divided integral solid shaft body; the rolling body (2) is a sphere, a cylinder, a tapered cylinder, or a spherical roller.
The self-excited oil mist jet lubrication high-speed bearing according to claim 7, characterized in that: when the outer ring sleeve (8) is arranged horizontally, the oil storage space (10) is a horizontal concave ring groove (24) with a horizontal concave The ring groove (24) is arranged on the inner wall of the outer ring sleeve (8).
The self-excited oil mist jet lubrication high-speed bearing according to claim 7, characterized in that: when the outer ring (8) is inclined or vertically arranged, the oil storage space (10) is an upwardly opening inclined ring groove (15). ), the inclined ring groove (15) is arranged on the inner wall of the outer collar (8).
The self-excited oil mist jet lubrication high-speed bearing according to claim 8, characterized in that: the inner wall of the outer ring sleeve (8) is provided with at least one inclined ring groove (15), and the lubrication hole (1) is located at the top end Tilt the upper part of the ring groove (15).
A self-excited oil mist spray lubrication method for high-speed bearings according to claim 1 or 8 or 9 or 10, characterized in that it comprises the following steps:

S1: Lubricating oil periodically enters between the outer ring (8) and the inner ring body (4) from the lubrication hole (1) provided on the outer ring (8), and is stored in the oil storage space (10);

S2: When the inner ring body (4) rotates at a high speed, the air attached to the outer surface of the inner ring body (4) also rotates at a high speed, and the high-energy airflow is constantly thrown out to impact the oil in the oil storage space (10) , Forming a self-excited jet lubrication effect of high-energy oil particles flying around, a part of high-energy oil particles are injected at high speed to the open side of the cage (9), the rolling elements (2) and the inner and outer races, and the cage (6) and rolling The friction pairs composed of the body (2), outer raceway (19), and inner raceway (20) are forced to be lubricated to maintain the high-speed rotation of the inner ring body (4);

S3: In step S2, when the inner ring body (4) rotates at a high speed, the sealing assembly (3) and the outer surface of the inner ring body (4) will produce a vortex sealing effect at the slit (11), and the oil seal.
The self-excited oil mist spray lubrication method for high-speed bearings according to claim 11, characterized in that: in step S1, the lubricating oil periodically enters between the outer ring sleeve (8) and the inner ring body (4), and must It is sufficient to keep enough lubricating oil in the oil storage space (10) when the bearing is in a static state, and the lubricating oil does not overflow from the slit (11) between the seal assembly (3) and the inner ring body (4), so as to It is used to maintain the self-excited jet lubrication effect when the bearing is running at high speed.
The application of the self-excited oil mist spray lubrication high-speed bearing in the motor according to claim 8 or 9 or 10, characterized in that: when the inner ring body (4) is a hollow single sleeve body, the inner ring body (4) is divided into It is placed on both sides of the motor rotor (16) of the motor and fixedly connected with the rotating shaft (12). The inner surface of the motor rotor (16) is matched and fixedly connected with the outer surface of the rotating shaft (12), and the inner ring body (4) , The rotating shaft (12) and the motor rotor (16) rotate synchronously; when the inner ring body (4) is an integral part of the solid shaft body, the inner ring body (4) is placed on both sides of the motor rotor (16). The ring body (4) and the rotating shaft (12) are an inseparable integral part; the inner hole surface of the motor rotor (16) is matched and fixedly connected with the outer surface of the rotating shaft (12), the inner ring body (4), the rotating shaft (12) It rotates synchronously with the motor rotor (16).