CN210050199U - A low-wear roller bearing - Google Patents

Abstract

The utility model relates to a low-wear roller bearing, belonging to the technical field of bearings. The utility model comprises an outer ring, an inner ring, a cylindrical roller and a cage. The two ends of the outer wall of the inner ring extend toward the outer side of the inner ring respectively. Two outer ribs are formed, two ends of the inner wall of the outer ring extend to the inner side of the outer ring to form an inner rib, and the outer rib and the inner rib are embedded with balls toward the side of the cylindrical roller. The utility model has the advantages of improving the cylindrical roller. effect on bearing life.

Description

A low-wear roller bearing

technical field

The utility model relates to the technical field of bearings, in particular to a low-wear roller bearing.

Background technique

Roller bearings are rolling bearings that use short cylindrical, tapered or waist drum rollers as rolling elements. There are mainly short radial cylindrical rollers, double row radial spherical rollers, tapered rollers and thrust rollers. The common roller bearing consists of the inner and outer rings of the bearing and a cage arranged between the two. The rollers are arranged on the cage to separate the rollers, keep the rollers at an equal distance, and distribute the load evenly.

The existing Chinese patent with the publication number CN205173242U, which discloses a short cylindrical roller bearing, includes an inner ring and an outer ring, the inner ring is arranged in the outer ring, and the outer wall of the inner ring and the inner wall of the outer ring are separated. A raceway is formed between them, and a number of rollers are arranged in the pipe; two outer ribs are formed on both ends of the outer wall of the inner ring, and an inner rolling groove for the rollers to roll is formed between the two outer ribs and the outer wall of the inner ring; One end of the inner wall of the outer ring forms an inner rib, the other end of the outer ring is provided with a detachable retaining ring, and an outer rolling groove for roller rolling is formed between the inner rib, the side wall of the retaining ring and the inner wall of the outer ring , each roller is located between the inner and outer rolling grooves. The structure of the inner ring with double rib, the outer ring with a single rib and a retaining ring.

The above-mentioned prior art solutions have the following defects: when the bearing is subjected to a force along its own axial direction, the end of the roller is in close contact with the outer rib or the inner rib. The ends of the rollers are prone to wear and the service life of the rollers is shorter.

Utility model content

The purpose of the utility model is to provide a low-wear roller bearing which improves the service life of the cylindrical roller bearing.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

A low-wear roller bearing, comprising an outer ring, an inner ring, a cylindrical roller and a cage, the two ends of the outer wall of the inner ring extend toward the outside of the inner ring to form two outer ribs respectively, and the inner wall of the outer ring Both ends extend to the inner side of the outer ring to form inner rib, the outer rib and the inner rib are embedded with balls on the side faces of the cylindrical roller, and the ball abuts against the cylindrical roller.

By adopting the above technical solution, when the cylindrical roller rotates and is subjected to a force along its own axis, rolling friction is generated between the end of the cylindrical roller and the ball, thereby connecting the cylindrical roller to the outer rib and inner rib. The sliding friction between the sides becomes rolling friction, and the rolling friction is smaller than the sliding friction, which reduces the friction force on the end of the cylindrical roller, reduces the wear rate of the end of the cylindrical roller, and is beneficial to improve the durability of the cylindrical roller. service life.

The utility model is further configured as follows: the outer and inner rib are provided with ball grooves on the sides facing the cylindrical roller, the balls are matched with the ball grooves, and the ball center of the balls is located inside the ball grooves.

By adopting the above technical solution, the fixed price of the ball in the ball groove is stable, and it is not easy to fall out of the pig groove, which ensures the function of the ball to reduce the frictional force on the end of the cylindrical roller.

The utility model is further provided that: a plurality of the balls are arranged, and the plurality of balls are evenly distributed on the sides of the outer rib and the inner rib facing the cylindrical roller.

By adopting the above technical solution, the ends of the cylindrical rollers can keep in contact with the balls all the time without contacting the outer and inner ribs, ensuring that the ends of the cylindrical rollers have rolling friction.

The utility model is further configured as follows: the bead groove is provided with a groove, and the groove starts from the side of the outer rib and the inner rib facing the cylindrical roller, and extends to the bottom of the bead groove and then returns to the outer rib and the inner rib. The rib faces the side of the cylindrical roller.

By adopting the above technical solution, the lubricant can enter the inside of the ball groove along the groove, and when the ball rotates, better lubrication can be obtained, so that the friction force of the ball groove is less when the ball rotates, so that the ball can rotate better , so that the ball can roll well with the cylindrical roller, which is beneficial to reduce the friction between the ball and the cylindrical roller.

The utility model is further provided that: each of the bead grooves is provided with at least two grooves.

By adopting the above technical solution, it is ensured that more lubricant can enter the ball groove, and the frictional force received by the ball rotating in the ball groove is reduced.

The utility model is further configured as follows: connecting grooves are opened between the adjacent bead grooves.

By adopting the above technical solution, the connecting groove plays a guiding role for the lubricant, so that the lubricant can be well dispersed in the ball groove, and then the lubricant can play a good lubricating effect on the ball, so that the space between the ball and the ball groove can be well lubricated. friction is reduced.

The utility model is further provided that: the surface of the ball is provided with a lubricating layer.

By adopting the above technical solution, the friction force between the balls and the ball grooves is further reduced, the balls can roll better, and the rolling between the balls and the cylindrical rollers is ensured smoothly.

The utility model is further provided that: the lubricating layer is a lubricating layer made of tungsten carbide.

By adopting the above technical solution, the hardness of tungsten carbide is very large, which is beneficial to reduce the rolling friction coefficient between the ball and the ball groove, thereby reducing the friction force between the ball and the ball groove, so that the rotation of the ball is relatively smooth, and there are It is beneficial to reduce the friction between the ball and the cylindrical roller, thereby reducing the wear of the cylindrical roller.

To sum up, the beneficial technical effects of the present utility model are:

1. By setting the balls, the friction force on the end of the cylindrical roller is reduced, the wear rate of the end of the cylindrical roller is reduced, and the service life of the cylindrical roller is improved;

2. By setting the groove, the lubricant can enter the inside of the ball groove along the groove, so that the rotation of the ball between the ball groove is more convenient, which is beneficial to reduce the friction between the ball and the cylindrical roller;

3. By setting a lubricating layer on the surface of the ball, the friction between the ball and the ball groove is further reduced.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the sectional view of the present utility model;

Fig. 3 is the partial enlarged schematic diagram of A part in Fig. 2;

FIG. 4 is a cross-sectional view of the present invention intended to embody the connecting groove.

In the figure, 1, outer ring; 11, inner rib; 2, inner ring; 21, outer rib; 3, cylindrical roller; 4, cage; 5, ball groove; 51, groove; 52, ball; 53. Lubricating layer; 6. Connecting groove.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

1 and 2, a low-wear roller bearing disclosed by the utility model includes an outer ring 1, an inner ring 2, a cylindrical roller 3 and a cage 4, an inner ring 2, a cage 4 and an outer ring 1 is arranged coaxially, and the cage 4 is sleeved on the outer wall of the inner ring 2, the outer ring 1 is sleeved on the outer wall of the cage 4, the cylindrical roller 3 is arranged on the cage 4, and the axis of the cylindrical roller 3 is parallel to the outer wall. The axis of the ring 1, the two ends of the outer wall of the inner ring 2 extend toward the direction of the inner ring 2 to form two outer ribs 21 respectively, and the two ends of the inner wall of the outer ring 1 extend toward the direction of the outer ring 1 to form the inner ribs 11. Balls 52 are embedded in the sides of the outer rib 21 and the inner rib 11 facing the cylindrical roller 3 , and the balls 52 are in contact with the cylindrical roller 3 , thereby connecting the end of the cylindrical roller 3 along its axis with the inner rib 11 The sliding friction with the outer rib 21 becomes rolling friction, which greatly reduces the frictional force on the end of the cylindrical roller 3, thereby reducing the wear rate of the end of the cylindrical roller 3 and improving the service life.

4, a plurality of balls 52 are provided, and the plurality of balls 52 are evenly distributed on the sides of the outer rib 21 and the inner rib 11 toward the cylindrical roller 3, so that the end of each cylindrical roller 3 can always abut the ball 52 , to ensure that the cylinder can only generate rolling friction with the inner rib 11 and the outer rib 21 from the end, the surface of the ball 52 is fixedly connected with a lubricating layer 53, and the lubricating layer 53 is a lubricating layer 53 made of tungsten carbide. , the lubricating layer 53 reduces the friction coefficient between the ball 52 and the ball groove 5, thereby further reducing the friction between the ball 52 and the ball groove 5; the outer rib 21 and the inner rib 11 face the side of the cylindrical roller 3 There is a ball groove 5, the ball 52 is located inside the ball groove 5, the outer surface of the roller is in contact with the ball groove 5, and the ball center of the ball 52 is located inside the ball groove 5, and the ball groove 5 plays a limiting role on the ball 52. , so that the balls 52 will not move at will, thereby avoiding friction between the balls 52 and preventing the balls 52 from falling out of the ball groove 5 , ensuring the relative position stability of the balls 52 .

3, the surface of the bead groove 5 is provided with a groove 51. The groove 51 starts from the outer rib 21 and the inner rib 11 toward the side of the cylindrical roller 3, and extends to the bottom of the bead groove 5 and then returns to the outer block. The side 21 and the inner rib 11 face the side of the cylindrical roller 3, each bead groove 5 has two grooves 51, the two grooves 51 intersect and do not overlap, and a connecting groove is opened between the adjacent bead grooves 5 6. The connecting groove 6 is opened on the side faces of the outer baffle 21 and the inner baffle facing each other, and the connecting groove 6 communicates with the groove 51 . The groove 51 plays a guiding role for the lubricant to enter the ball groove 5, and a certain amount of lubricant can be stored in the groove 51, which is conducive to better lubricating the outer surface of the ball 52, so that the ball 52 and the ball groove can be well lubricated. The friction between the balls 5 is reduced; the connecting groove 6 guides the dispersion of the lubricant between the adjacent ball grooves 5, which is beneficial for all the balls 52 to be well lubricated, so that the balls 52 and the ball grooves 5 are better lubricated. The friction between the balls 52 and the cylindrical roller 3 is reduced, thereby reducing the friction rate of the cylindrical roller 3 .

The implementation principle of this embodiment is: when the cylindrical roller 3 is subjected to a force along its own axial direction and the cylindrical roller 3 rotates, rolling occurs between the end of the real axis of the cylindrical roller 3 and the ball 52. The end of the cylindrical roller 3 slides with the outer rib 21 and the inner rib 11, which greatly reduces the frictional force on the end of the cylindrical roller 3. At the same time, the lubricant in the bearing reaches the outer rib 21 and the inner rib 11. When the side 11 is opposite to the inner side, it can enter the inside of the ball groove 5 along the groove 51, so that the outer surface of the ball 52 can be easily coated with lubricant, thereby reducing the friction between the ball 52 and the ball groove 5. , and the lubricant can enter into other bead grooves 5 connected in sequence along the connecting groove 6. The connecting groove 6 plays a guiding role, making the lubricant more easily dispersed in different bead grooves 5. At the same time, the lubricating layer 53 The hardness of the ball is relatively large, which reduces the possible small deformation of the ball 52, which is beneficial to reduce the rolling friction coefficient between the ball 52 and the ball groove 5, thereby reducing the friction between the ball 52 and the ball groove 5, thereby reducing the cylindrical shape. The frictional force between the rollers 3 and the balls 52 reduces the wear rate of the ends of the cylindrical rollers 3 , which is beneficial to improve the service life of the cylindrical rollers 3 .

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. A low-wear roller bearing, comprising an outer ring (1), an inner ring (2), a cylindrical roller (3) and a cage (4), characterized in that: the outer wall of the inner ring (2) The two ends extend toward the outside of the inner ring (2) to form two outer ribs (21) respectively, and both ends of the inner wall of the outer ring (1) extend to the inner side of the outer ring (1) to form inner ribs (11). Balls (52) are embedded in the side surfaces of the rib (21) and the inner rib (11) facing the cylindrical roller (3), and the balls (52) are in contact with the cylindrical roller (3). 2 . The low-wear roller bearing according to claim 1 , wherein the outer rib ( 21 ) and the inner rib ( 11 ) are provided with ball grooves ( 5), the ball (52) is matched with the ball groove (5), and the center of the ball (52) is located inside the ball groove (5). 3. A low-wear roller bearing according to claim 1, wherein a plurality of the balls (52) are provided, and the plurality of balls (52) are arranged on the outer rib (21) and the inner rib ( 11) Evenly distributed towards the side of the cylindrical roller (3). 4. A low-wear roller bearing according to claim 2, characterized in that a groove (51) is formed in the ball groove (5), and the groove (51) extends from the outer rib (21) and the inner rib (11) towards the side of the cylindrical roller (3), extending to the bottom of the ball groove (5) and back to the outer rib (21) and the inner rib (11) towards the cylindrical roller (3) ) side. 5 . The low-wear roller bearing according to claim 4 , wherein each of the ball grooves ( 5 ) is provided with at least two grooves ( 51 ). 6 . 6 . The low-wear roller bearing according to claim 2 , wherein a connecting groove ( 6 ) is opened between the adjacent ball grooves ( 5 ). 7 . 7 . The low-wear roller bearing according to claim 1 , wherein a lubricating layer ( 53 ) is provided on the surface of the ball ( 52 ). 8 . 8 . The low-wear roller bearing according to claim 7 , wherein the lubricating layer ( 53 ) is a lubricating layer ( 53 ) made of tungsten carbide. 9 .

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