An oil supply ring under the raceway for a high-speed rolling bearing

Abstract

An under-ring oil supply ring for high-speed rolling bearings, which relates to an under-ring oil supply ring. The present invention aims to solve the problem that the existing oil injection structure on the ring side has insufficient oil supply efficiency, resulting in too high a temperature rise of the rolling bearings, which affects the bearing life and the smooth operation of the rotor. The present invention includes an oil slinger body (1). On the outer circumferential surface of the oil slinger body (1), a plurality of axial oil supply grooves (5) are machined along its axial direction. On each axial oil supply groove (5), a radial oil inlet hole (2) is opened towards the axial direction of the oil slinger body (1) to achieve sufficient oil supply to n high-speed rolling bearings (9). A plurality of annular oil guiding grooves (4) are opened in the outer circumferential radial direction of the oil slinger body (1) to achieve uniform oil supply to n high-speed rolling bearings (9), where n ≤ 3. The present invention is used for lubricating rolling bearings.

Description

Technical Field

[0001] The present invention relates to an oil supply ring, and particularly to an under-ring oil supply ring for a high-speed rolling bearing. It belongs to the field of rolling bearing lubrication. Background Art

[0002] High-speed and high-precision rolling bearings are one of the key components in the field of high-speed transmission. The linear velocity of the inner ring of this rolling bearing is generally above 100 m / s, and it is widely used in many transmission fields such as transmission, aviation, navigation, metallurgy, fluid transportation, and oil production.

[0003] Due to the relatively large linear velocity between the inner ring and the rolling elements during the operation of high-speed and high-precision rolling bearings, a large amount of heat is generated. Although the ring-side oil injection structure can supply sufficient lubricating oil to the bearing, since the oil supply position does not directly act on the position between the bearing rolling elements and the bearing inner ring, it will cause insufficient oil supply efficiency, resulting in too high a temperature rise of the rolling bearing, seriously affecting the bearing life and the smooth operation of the rotor.

[0004] In summary, the existing ring-side oil injection structure has the problem of insufficient oil supply efficiency, which causes too high a temperature rise of the rolling bearing, resulting in affecting the bearing life and the smooth operation of the rotor. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the existing ring-side oil injection structure has insufficient oil supply efficiency, which causes too high a temperature rise of the rolling bearing, resulting in affecting the bearing life and the smooth operation of the rotor. Furthermore, an under-ring oil supply ring for a high-speed rolling bearing is provided.

[0006] The technical solution of the present invention is: An under-ring oil supply ring for a high-speed rolling bearing includes an oil slinger body 1. On the outer circumferential surface of the oil slinger body 1, a plurality of axial oil supply grooves 5 are machined along its axial direction. On each axial oil supply groove 5, a radial oil inlet hole 2 is opened towards the axial direction of the oil slinger body 1 to achieve sufficient oil supply to n high-speed rolling bearings 9; on the outer circumferential radial direction of the oil slinger body 1, a plurality of circular oil guiding grooves 4 are opened to achieve uniform oil supply to n high-speed rolling bearings 9, where n ≤ 3.

[0007] Further, the axial oil supply groove 5 is a long strip-shaped oil supply groove.

[0008] Further, the number of the axial oil supply grooves 5 is 6 - 10.

[0009] Further, the number of the axial oil supply grooves 5 is 8.

[0010] Further, n = 1 or 2.

[0011] Further, an external thread 15 is machined on one side of the oil slinger body 1, and an oil collecting ring 3 is machined on the other side of the oil slinger body 1.

[0012] Further, the outer diameter of the oil slinger ring body 1 is smaller than that of the oil collecting ring 3.

[0013] Further, a bevel surface 16 is machined at the connection between the oil collecting ring 3 and the radial oil inlet hole 2, and the angle between the bevel surface 16 and the axis of the oil slinger ring body 1 is 45° - 60°.

[0014] Further, the angle between the bevel surface 16 and the axis of the oil slinger ring body 1 is 45°.

[0015] Further, the number of the oil guiding grooves 4 is three.

[0016] The present invention has the following effects compared with the prior art:

[0017] According to the relevant requirements of the oil supply flow rate under the bearing ring, the present invention sets an oil collecting ring structure at the oil injection position of the nozzle under the ring to ensure that sufficient lubricating oil enters the bearing. Under the action of the centrifugal force of the rotor, the lubricating oil enters the oil guiding grooves and the axial oil supply grooves along the circumferential direction of the inner sleeve of the bearing installation through a number of radial oil inlet holes, and then enters the oil injection holes under the bearing ring to achieve the purpose of oil supply under the bearing ring.

[0018] In addition, through the setting of the oil guiding grooves, the present invention can ensure accurate alignment with the oil inlet of the high-speed rolling bearing, ensure uniform oil supply to the high-speed rolling bearing, and at the same time, the axial oil supply groove realizes sufficient oil supply to the high-speed rolling bearing, thereby increasing the oil supply efficiency of the lubricating oil. After ensuring uniform oil supply and sufficient oil supply, the overheating of the rolling bearing is avoided, and the bearing life and the running stability of the rotor are improved. Description of the Drawings

[0019] Figure 1 is the front view of the oil supply ring under the ring of the present invention. Figure 2 is Figure 1 the front sectional view of Figure 3 is the installation structure schematic diagram of the present invention. Detailed Embodiments

[0020] Detailed Embodiment 1: With reference to Figures 1 to 2 This embodiment is described. A kind of oil supply ring under the ring for a high-speed rolling bearing in this embodiment includes an oil slinger ring body 1. On the outer circumferential surface of the oil slinger ring body 1, a plurality of axial oil supply grooves 5 are machined along its axial direction. A radial oil inlet hole 2 is opened on each axial oil supply groove 5 towards the axis direction of the oil slinger ring body 1 to achieve sufficient oil supply to n high-speed rolling bearings 9; a plurality of circular oil guiding grooves 4 are opened in the radial direction of the outer circumference of the oil slinger ring body 1 to achieve uniform oil supply to n high-speed rolling bearings 9, where n ≤ 3.

[0021] The bearing inner ring and the spacer inner ring of this embodiment are installed on the under-ring oil supply structure. The bearing outer ring is combined and installed with the side oil injection ring and installed in the housing. The pressure plate is installed at the shaft end to fix the bearing outer ring. The under-ring nozzle supplies lubricating oil under the bearing ring.

[0022] For the structural installation form of this embodiment, the lock nut assembly 6 is screwed onto the left end face of the oil slinger body 1.

[0023] Specific Embodiment Two: Combined Figures 1 to 2 To illustrate this embodiment, the axial oil supply groove 5 of this embodiment is a long strip-shaped oil supply groove. With such a setting, it is convenient to supply oil to at least 2 high-speed rolling bearings 9 simultaneously. The other components and connection relationships are the same as those in Specific Embodiment One.

[0024] Specific Embodiment Three: Combined Figures 1 to 2 To illustrate this embodiment, the number of the axial oil supply grooves 5 of this embodiment is 6 - 10. With such a setting, it is convenient to fully supply oil to the high-speed rolling bearings 9. The other components and connection relationships are the same as those in Specific Embodiment One or Two.

[0025] Specific Embodiment Four: Combined Figures 1 to 2 To illustrate this embodiment, the number of the axial oil supply grooves 5 of this embodiment is 8. With such a setting, this situation is suitable for fully supplying oil to 2 high-speed rolling bearings 9 simultaneously. The other components and connection relationships are the same as those in Specific Embodiment One, Two, or Three.

[0026] Specific Embodiment Five: Combined Figures 1 to 2 To illustrate this embodiment, n = 1 or 2 in this embodiment. With such a setting, if there are more applicable high-speed rolling bearings 9, it will lead to lubrication fatigue. Therefore, the axial oil supply groove 5 adopted in this embodiment is preferably for fully lubricating 2 high-speed rolling bearings 9. The other components and connection relationships are the same as those in Specific Embodiment One, Two, Three, or Four.

[0027] Specific Embodiment Six: Combined Figures 1 to 2 To illustrate this embodiment, an external thread 15 is machined on one side of the oil slinger body 1 of this embodiment, and an oil collecting ring 3 is machined on the other side of the oil slinger body 1. With such a setting, in this embodiment, the lubricating oil sprayed by the under-ring nozzle 13 is stored by the oil collecting ring 3, and the high-speed rolling bearings 9 are supplied with oil through the radial oil inlet 2, the oil guiding groove 4, and the axial oil supply groove 5. The other components and connection relationships are the same as those in Specific Embodiment One, Two, Three, Four, or Five.

[0028] Specific Embodiment Seven: Combined Figures 1 to 2Describing this embodiment, the outer diameter of the oil slinger body 1 of this embodiment is smaller than the outer diameter of the oil collecting ring 3. With such a setting, it is convenient for the oil collecting ring 3 to store lubricating oil. The other components and connection relationships are the same as those in the first, second, third, fourth, fifth, or sixth specific embodiments.

[0029] Specific embodiment eight: Combining Figures 1 to 2 Describing this embodiment, a bevel surface 16 is machined at the connection between the inside of the oil collecting ring 3 and the radial oil inlet hole 2, and the angle between the bevel surface 16 and the axis of the oil slinger body 1 is 45° - 60°. With such a setting, it is convenient to position the shaft 14 in the axial direction. The other components and connection relationships are the same as those in the first, second, third, fourth, fifth, sixth, or seventh specific embodiments.

[0030] The inner hole diameter of the outer end face of the oil collecting ring 3 of this embodiment is the same as that at the end A of the bevel surface 16, which is convenient for the positioning ring on the shaft 14 to enter the oil collecting ring 3, and the vertical surface at the end of the bevel surface 16 abuts against the end face of the positioning ring.

[0031] Specific embodiment nine: Combining Figures 1 to 2 Describing this embodiment, the angle between the bevel surface 16 and the axis of the oil slinger body 1 is 45°. With such a setting, it is convenient for the lubricating oil located in the oil collecting ring 3 to supply oil to the high-speed rolling bearing 9 smoothly. The other components and connection relationships are the same as any one of the first to eighth specific embodiments.

[0032] Specific embodiment ten: Combining Figures 1 to 2 Describing this embodiment, the number of the oil guiding grooves 4 of this embodiment is 3. With such a setting, it is convenient to align with the oil inlet of the high-speed rolling bearing 9. The other components and connection relationships are the same as any one of the first to ninth specific embodiments.

[0033] Combining Figures 1 to 3 Describing the working principle of the present invention:

[0034] The lubrication principle of the present invention is as follows: The lubricating oil under the ring enters the oil collecting ring 3 under the action of the centrifugal force of the rotor. The lubricating oil entering the oil collecting ring enters the oil guiding groove 4 from the radial oil inlet 2, and then enters the axial oil supply groove 5. The axial oil supply groove is arranged to be aligned with the oil supply port of the bearing inner ring. Under the action of the centrifugal force, it enters the action point of the bearing rolling elements and the bearing inner ring, thus realizing the function of supplying oil under the bearing ring.

[0035] The installation structure of the present invention and its connection relationship are as follows: The inner ring of the high-speed rolling bearing 9 and the spacer inner ring 12 are installed on a high-speed rolling bearing oil supply structure 7 under the ring. The outer ring of the high-speed rolling bearing 9, the side oil injection ring 11, and the pressing plate 8 are connected together and installed in the housing. The oil injection nozzle 13 under the ring is arranged on the side of the oil collecting ring 3 of the oil supply structure under the ring, serving to supply oil under the ring for the high-speed rolling bearing 9.

[0036] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can also make other changes within the spirit of the present invention and apply them to fields not mentioned in the present invention. Of course, all such changes made according to the spirit of the present invention should be included within the scope claimed by the present invention.

Claims

1. An under-ring oil supply ring for a high-speed rolling bearing, characterized in that: It includes an oil slinger body (1). On the outer circumferential surface of the oil slinger body (1), a plurality of axial oil supply grooves (5) are machined along its axial direction. On each axial oil supply groove (5), a radial oil inlet hole (2) is opened towards the axial direction of the oil slinger body (1) to achieve sufficient oil supply to n high-speed rolling bearings (9); on the outer circumferential radial direction of the oil slinger body (1), a plurality of annular oil guiding grooves (4) are opened to achieve uniform oil supply to n high-speed rolling bearings (9), where n ≤ 3; On one side of the oil slinger body (1), an external thread (15) is machined, and on the other side of the oil slinger body (1), an oil collecting ring (3) is machined; The outer diameter of the oil slinger body (1) is smaller than the outer diameter of the oil collecting ring (3); On the connection part inside the oil collecting ring (3) and the radial oil inlet hole (2), an inclined surface (16) is machined. The included angle between the inclined surface (16) and the axis of the oil slinger body (1) is 45° - 60°.

2. The under-ring oil supply ring for a high-speed rolling bearing according to claim 1, characterized in that: The axial oil supply groove (5) is a strip-shaped oil supply groove.

3. The under-ring oil supply ring for a high-speed rolling bearing according to claim 1 or 2, characterized in that: The number of axial oil supply grooves (5) is 6 - 10.

4. The under-ring oil supply ring for a high-speed rolling bearing according to claim 3, characterized in that: The number of axial oil supply grooves (5) is 8.

5. The under-ring oil supply ring for a high-speed rolling bearing according to claim 4, characterized in that: n = 1 or 2.

6. The under-ring oil supply ring for a high-speed rolling bearing according to claim 5, characterized in that: The included angle between the inclined surface (16) and the axis of the oil slinger body (1) is 45°.

7. The under-ring oil supply ring for a high-speed rolling bearing according to claim 6, wherein: The number of oil guiding grooves (4) is 3.

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