An annular oil groove for a large roller bearing

Abstract

The utility model belongs to bearing lubrication technical field, specifically discloses a kind of annular oil groove for large roller bearing, including bearing outer ring, bearing inner race and roller, the roller is cylinder, and roller is installed between bearing outer ring and bearing inner race, the bearing outer ring is circular ring, and outer oil injection hole is equipped on the outer wall of bearing outer ring;The inner wall of bearing outer ring is equipped with outer annular oil groove, and the outer annular oil groove is communicated by outer transverse oil groove;The bearing inner race is circular ring, and inner oil injection hole is equipped on the inner wall of bearing inner race;The outer wall of bearing inner race is equipped with inner annular oil groove, and the inner annular oil groove is communicated by inner transverse oil groove;The excess lubricating oil or lubricating grease when filling will be stored in bearing, when bearing lacks lubrication temperature to increase, can make bearing regain lubrication, to improve the service life of bearing, reduce the frequency of filling lubricating oil or lubricating grease.

Description

Technical Field

[0001] This utility model belongs to the field of bearing lubrication technology, specifically relating to an annular oil groove for large roller bearings. Background Technology

[0002] When extra-large bearings rotate, bearing lubrication is an important issue to consider. In the existing technology, bearing lubrication is generally achieved by injecting lubricating oil or grease through the oil injection hole. The injected lubricating oil or grease covers the contact surfaces of the inner and outer rings and rollers of the bearing as the bearing rotates. Because the gap between the contact surfaces of the inner and outer rings and rollers of the bearing is small, the amount of lubricating oil or grease stored in the gap is also relatively small.

[0003] During the rotation of a bearing, it consumes lubricating oil or grease. Simultaneously, some lubricating oil or grease is squeezed out by the inner and outer rings and rollers, causing a rapid reduction in the amount of lubricating oil or grease in the bearing. After a certain period of use, bearings require appropriate replenishment of lubricating oil or grease to prevent damage due to lack of lubrication. Extra-large bearings, due to their larger size and higher cost, consume lubricating oil or grease more quickly, requiring longer replenishment times. Therefore, reducing the frequency of lubricating oil or grease replenishment has always been a concern. Utility Model Content

[0004] In view of the problems existing in the background art, the present invention provides an annular oil groove for large roller bearings.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an annular oil groove for a large roller bearing, comprising an outer ring, an inner ring, and rollers, wherein the rollers are cylindrical and are installed between the outer ring and the inner ring. The outer ring is a circular ring, and an external oil injection hole is provided on its outer wall. An outer annular oil groove is provided on the inner wall of the outer ring, and the outer annular oil grooves are connected to each other through an outer transverse oil groove. The inner ring is a circular ring, and an internal oil injection hole is provided on its inner wall. An inner annular oil groove is provided on the outer wall of the inner ring, and the inner annular oil grooves are connected to each other through an inner transverse oil groove.

[0006] The outer annular oil groove consists of two parallel arc-shaped grooves, and the distance between the outer annular oil grooves is less than the length of the roller.

[0007] The outer transverse oil grooves are evenly distributed between the outer annular oil grooves, and the length of the outer transverse oil grooves is equal to the distance between the outer annular oil grooves. The outer transverse oil grooves are connected to the outer oil injection holes.

[0008] The radius of the outer transverse oil groove is not greater than the cross-sectional radius of the outer annular oil groove.

[0009] The inner annular oil groove consists of two parallel arc-shaped grooves, and the distance between the inner annular oil grooves is less than the length of the roller.

[0010] The inner transverse oil grooves are evenly distributed between the inner annular oil grooves. The length of the inner transverse oil grooves is equal to the distance between the outer annular oil grooves. The inner transverse oil grooves are connected to the inner oil injection holes.

[0011] The radius of the inner transverse oil groove is not greater than the cross-sectional radius of the inner annular oil groove.

[0012] The beneficial effects of this utility model are as follows: This utility model provides an annular oil groove for large roller bearings. The oil groove has a simple structure and can be implemented with only slight improvements to the existing technology. The oil groove stores excess lubricating oil or grease inside the bearing during filling. When the bearing lacks lubrication and the temperature rises, the lubricating oil or grease flows out of the bearing and into the bearing gap, so that the bearing can regain lubrication, thereby improving the service life of the bearing and reducing the number of times lubricating oil or grease needs to be added. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is a side sectional view of the present invention.

[0015] Figure 3 This is a schematic diagram of the outer ring of the bearing.

[0016] Figure 4 This is a schematic diagram of the inner ring of the bearing.

[0017] In the diagram: 1. Bearing outer ring, 2. Bearing inner ring, 3. Roller, 4. External oil injection hole, 5. Internal oil injection hole, 6. External annular oil groove, 7. External transverse oil groove, 8. Internal annular oil groove, 9. Internal transverse oil groove. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] The following detailed description of the specific embodiments of this utility model, in conjunction with the accompanying drawings, further illustrates the following: An annular oil groove for a large roller bearing includes an outer bearing ring 1, an inner bearing ring 2, and rollers 3. The rollers 3 are cylindrical and are installed between the outer bearing ring 1 and the inner bearing ring 2. The outer bearing ring 1 is an annular ring, and an external oil injection hole 4 is provided on its outer wall. An outer annular oil groove 6 is provided on the inner wall of the outer bearing ring 1, and the outer annular oil grooves 6 are connected by an outer transverse oil groove 7. The outer annular oil groove 6 consists of two parallel arc-shaped grooves, and the distance between the outer annular oil grooves 6 is less than the length of the rollers 3. In actual use, the cross-sectional radius of the outer annular oil grooves 6 should be minimized as much as possible to prevent increased friction between the rollers 3 and the outer annular oil grooves 6 when the rollers 3 roll on the outer annular oil grooves 6. Force can damage the bearing and reduce its service life. In this embodiment, the outer annular oil groove 6 consists of two parallel arc-shaped grooves. The two outer annular oil grooves 6 are symmetrical with respect to the central cross section of the outer ring 1 of the bearing to avoid eccentric force when the roller 3 rolls. The outer transverse oil grooves 7 are evenly distributed between the outer annular oil grooves 6. The length of the outer transverse oil grooves 7 is equal to the distance between the outer annular oil grooves 6. The outer transverse oil grooves 7 are connected to the outer oil injection hole 4. The outer transverse oil grooves 7 have two functions: first, to connect the two outer annular oil grooves 6; second, to facilitate the flow of injected lubricating oil or grease into the outer annular oil grooves 6. The radius of the outer transverse oil grooves 7 is not greater than the cross-sectional radius of the outer annular oil grooves 6. In actual use, the radius of the outer transverse oil grooves 7 should be as small as possible to reduce the vibration generated by the roller 3 when rolling with the outer transverse oil grooves 7, which would affect the service life of the bearing.

[0020] The bearing inner ring 2 is a circular ring, and an inner oil injection hole 5 is provided on the inner wall of the bearing inner ring 2; an inner annular oil groove 8 is provided on the outer wall of the bearing inner ring 2, and the inner annular oil grooves 8 are connected by an inner transverse oil groove 9; the inner annular oil groove 8 is two parallel arc-shaped grooves, and the distance between the inner annular oil grooves 8 is less than the length of the roller 3; the inner annular oil groove 8 and the outer annular oil groove 6 have the same structure and function; in this embodiment, the inner annular oil groove 8 and the outer annular oil groove 6 are symmetrically arranged, and in actual use, the inner annular oil groove 8... The spacing between the inner and outer annular oil grooves 6 can also be different to facilitate lubrication of different positions of the roller 3 by lubricating oil or grease; the inner transverse oil grooves 9 are evenly distributed between the inner annular oil grooves 8, and the length of the inner transverse oil grooves 9 is equal to the distance between the outer annular oil grooves 6. The inner transverse oil grooves 9 are connected to the inner oil injection holes 5; the radius of the inner transverse oil grooves 9 is not greater than the cross-sectional radius of the inner annular oil grooves 8; the inner transverse oil grooves 9 and the outer transverse oil grooves 7 have the same structure and function; the outer oil injection hole 4 and the inner oil injection hole 5 of the bearing are for the convenience of adding lubricating oil or grease.

[0021] The usage process of this utility model is as follows: First, the bearings are assembled together; then, the bearings are installed on the bearing positions; after installation, lubricating oil or grease is added into the bearing through the external oil injection hole 4 or the internal oil injection hole 5; during the addition, excess lubricating oil or grease will be stored in the outer annular oil groove 6, the inner annular oil groove 8, the outer transverse oil groove 7, and the inner transverse oil groove 9; during the rotation of the bearing, the lubricating oil or grease lubricates the rollers 3; when the rollers 3 of the bearing lack lubricating oil or grease, the rollers 3 directly contact and rub against the outer ring 1 and the inner ring 2 of the bearing, and the friction will cause the temperature of the contact surface between the rollers 3 and the outer ring 1 and the inner ring 2 of the bearing to rise. At this time, the lubricating oil or grease stored in the outer annular oil groove 6, the inner annular oil groove 8, the outer transverse oil groove 7, and the inner transverse oil groove 9 will be stored in the inner transverse oil groove 9. The temperature of the lubricating oil or grease in the oil groove 7 and the inner transverse oil groove 9 increases accordingly, causing the lubricating oil or grease to expand in volume. The lubricating oil or grease then flows out from the outer annular oil groove 6, the inner annular oil groove 8, the outer transverse oil groove 7, and the inner transverse oil groove 9, flowing into the gap between the roller 3 and the outer ring 1 and the inner ring 2 of the bearing, increasing the lubrication at the roller 3, thereby improving the service life of the bearing. When the bearing needs to be lubricated after a certain period of use, lubricating oil or grease can be added from the outer oil injection hole 4 or the inner oil injection hole 5 according to the specific usage environment. After adding, the bearing can be manually rotated to allow the excess lubricating oil or grease to be refilled into the outer annular oil groove 6, the inner annular oil groove 8, the outer transverse oil groove 7, and the inner transverse oil groove 9.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0023] The parts of this utility model not described in detail are existing technologies.

Claims

1. An annular oil groove for a large roller bearing, comprising an outer ring (1), an inner ring (2), and rollers (3), wherein the rollers (3) are cylindrical and are mounted between the outer ring (1) and the inner ring (2), characterized in that: The bearing outer ring (1) is a circular ring, and an external oil injection hole (4) is provided on the outer wall of the bearing outer ring (1); an outer annular oil groove (6) is provided on the inner wall of the bearing outer ring (1), and the outer annular oil grooves (6) are connected to each other through an outer transverse oil groove (7); the bearing inner ring (2) is a circular ring, and an inner oil injection hole (5) is provided on the inner wall of the bearing inner ring (2); an inner annular oil groove (8) is provided on the outer wall of the bearing inner ring (2), and the inner annular oil grooves (8) are connected to each other through an inner transverse oil groove (9).

2. The annular oil groove for a large roller bearing according to claim 1, characterized in that: The outer annular oil groove (6) consists of two parallel arc-shaped grooves, and the distance between the outer annular oil grooves (6) is less than the length of the roller (3).

3. The annular oil groove for large roller bearings according to claim 1, characterized in that: The outer horizontal oil groove (7) is evenly distributed between the outer annular oil grooves (6). The length of the outer horizontal oil groove (7) is equal to the distance between the outer annular oil grooves (6). The outer horizontal oil groove (7) is connected to the outer oil injection hole (4).

4. The annular oil groove for a large roller bearing according to claim 1, characterized in that: The radius of the outer transverse oil groove (7) is not greater than the cross-sectional radius of the outer annular oil groove (6).

5. The annular oil groove for a large roller bearing according to claim 1, characterized in that: The inner annular oil groove (8) consists of two parallel arc-shaped grooves, and the distance between the inner annular oil grooves (8) is less than the length of the roller (3).

6. The annular oil groove for a large roller bearing according to claim 1, characterized in that: The inner horizontal oil groove (9) is evenly distributed between the inner annular oil grooves (8). The length of the inner horizontal oil groove (9) is equal to the distance between the outer annular oil grooves (6). The inner horizontal oil groove (9) is connected to the inner oil injection hole (5).

7. The annular oil groove for a large roller bearing according to claim 1, characterized in that: The radius of the inner transverse oil groove (9) is not greater than the cross-sectional radius of the inner annular oil groove (8).

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