High-bearing-capacity rolling mill bearing

Abstract

The utility model discloses a high bearing type rolling mill bearing, which belongs to the technical field of rolling mill bearings, and comprises an outer ring, an inner ring and two retainers, the outer surfaces of the retainers are fixedly connected with a plurality of stop blocks, the outer surfaces of the two retainers are respectively provided with a plurality of rollers, the outer surfaces of the retainers are provided with auxiliary structures, and the auxiliary structures are arranged on the outer surfaces of the retainers. The auxiliary structure comprises a plurality of protruding rods, one ends of the protruding rods are fixedly connected with the outer surface of the retainer, and by arranging the auxiliary structure, when lubricating oil is added into the bearing, the lubricating oil in the grooves of the protruding rods can enter the rectangular grooves in the outer surface of the check block and enter the outer surface of the roller through the rectangular grooves along with lubricating oil loss of the outer surface of the roller; meanwhile, the microgrooves in the outer surface of the roller can serve as lubricating oil storage pools, the consumption speed of lubricating oil is reduced, the roller is continuously lubricated for a long time, and the problem that the bearing performance of the bearing is reduced due to dry friction caused by too fast consumption of the lubricating oil is solved as much as possible.

Description

Technical Field

[0001] This utility model belongs to the field of rolling mill bearing technology, specifically a high load-bearing rolling mill bearing. Background Technology

[0002] Rolling mill bearings are specialized bearings installed on rolling mills. A rolling mill is a piece of equipment used for metal rolling processing, which deforms metal billets into products of desired shapes and sizes by applying pressure between rotating rolls. Rolling mill bearings play a crucial supporting and transmission role in this process.

[0003] Rolling mill bearings typically include four-row tapered roller bearings and double-row self-aligning roller bearings. Four-row tapered roller bearings are mainly used in rolling mills that bear heavy loads, such as large slab rolling mills and medium-thick plate rolling mills. Double-row self-aligning roller bearings are suitable for rolling mills where the installation accuracy requirements are not particularly high or where uneven loads may occur during operation.

[0004] When lubricating double-row self-aligning roller bearings, the lubricating oil is usually applied directly to the surface of each component of the bearing. However, in actual use, the movement of the rollers and the inner and outer rings causes the lubricating oil to be consumed too quickly inside the bearing, and the lubricating oil is not easy to remain on the surface of the rollers. This results in a large consumption of lubricating oil during bearing use, which can easily lead to dry friction and a decrease in the bearing's load-bearing capacity. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In order to overcome the above-mentioned defects of the prior art, this utility model provides a high load-bearing rolling mill bearing, which solves the problem that the movement of the rollers and the inner and outer rings causes the lubricating oil to be consumed too quickly inside the bearing, and the lubricating oil is not easy to remain on the surface of the rollers, resulting in large lubricating oil consumption during bearing use, and dry friction, which affects the bearing's load-bearing performance.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-load-bearing rolling mill bearing, comprising an outer ring, an inner ring, and two cages. Several stops are fixedly connected to the outer surface of each cage. Several rollers are respectively arranged on the outer surfaces of the two cages. An oil groove and two through holes are formed on the outer surface of the outer ring, the through holes penetrating the outer surface and inner wall of the outer ring. An auxiliary structure is provided on the outer surface of the cage, the auxiliary structure comprising several protruding rods, one end of which is fixedly connected to the outer surface of the cage. The protruding rods are circumferentially distributed on the outer surface of the cage, and a groove is formed at the top of each protruding rod. A rectangular groove is formed on the outer surface of each stop, penetrating the left and right sides of the stop. Several micro-grooves are formed on the outer surface of each roller, the micro-grooves being circumferentially distributed on the outer surface of the roller.

[0009] As a further embodiment of this utility model: the upper and lower ends of the roller are provided with auxiliary edges, and the outer edge of the auxiliary edges is arc-shaped.

[0010] As a further embodiment of this utility model: the bottom of the inner wall of the groove is provided with a plurality of semi-circular grooves, which are linearly distributed on the inner wall of the groove.

[0011] As a further embodiment of this utility model: support blocks are fixedly connected to both sides of the protruding rod, and the end of the support block away from the protruding rod is fixedly connected to one side of the stop block.

[0012] As a further embodiment of this utility model: the outer surface of the outer ring is provided with a sealing structure, the sealing structure includes a metal rod, and rubber rods are fixedly connected to both ends of the metal rod, the size and shape of the outer surface of the rubber rods being adapted to the size and shape of the inner wall of the through hole.

[0013] As a further embodiment of this utility model: a rubber ball is fixedly connected to the end of the rubber rod away from the metal rod, and the diameter of the rubber ball is larger than the diameter of the rubber rod.

[0014] As a further embodiment of this utility model: several protruding strips are fixedly connected to both ends of the metal rod, and the protruding strips are located on the outer surface of the metal rod away from the rubber rod.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This rolling mill bearing, through the setting of an auxiliary structure, by installing several protruding rods on the outer surface of the cage and opening several micro-grooves on the outer surface of the rollers, allows the lubricating oil in the grooves of the protruding rods to enter the rectangular grooves on the outer surface of the stop when lubricating oil is added to the bearing. As the lubricating oil on the outer surface of the rollers is consumed, it enters the outer surface of the rollers through the rectangular grooves. At the same time, the micro-grooves on the outer surface of the rollers can act as lubricating oil reservoirs, slowing down the consumption rate of lubricating oil and providing continuous and long-term lubrication for the rollers. This minimizes the problem of dry friction caused by excessive consumption of lubricating oil, which leads to a decrease in bearing capacity.

[0018] 2. This rolling mill bearing, by setting support blocks, can reinforce and support the connection between the cam and the cage, thereby improving the stability of the connection structure between the cam and the cage.

[0019] 3. This rolling mill bearing, by setting a sealing structure, fixes a metal rod to the inner wall of the oil groove during bearing installation and allows a rubber rod to enter the through hole. The metal rod and rubber rod can further seal the oil groove and through hole, reducing lubricating oil leakage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is an exploded three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the retainer in this utility model;

[0023] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A;

[0024] Figure 5 This is a schematic diagram of the structure of the metal rod of this utility model.

[0025] In the diagram: 1. Outer ring; 2. Auxiliary structure; 3. Sealing structure; 4. Oil groove; 5. Through hole; 6. Inner ring; 7. Cage; 8. Stop block; 9. Roller; 21. Protruding rod; 22. Groove; 23. Rectangular groove; 24. Microgroove; 25. Auxiliary edge; 26. Semicircular groove; 27. Support block; 31. Metal rod; 32. Rubber rod; 33. Rubber ball; 34. Protruding strip. Detailed Implementation

[0026] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0027] like Figure 1-4As shown, this utility model provides a technical solution: a high-load-bearing rolling mill bearing, including an outer ring 1, an inner ring 6, and two cages 7. Several stops 8 are fixedly connected to the outer surface of the cages 7. Several rollers 9 are respectively provided on the outer surfaces of the two cages 7. An oil groove 4 and two through holes 5 are opened on the outer surface of the outer ring 1, the through holes 5 penetrating the outer surface and inner wall of the outer ring 1. An auxiliary structure 2 is provided on the outer surface of the cages 7, the auxiliary structure 2 including several protruding rods 21. One end of each protruding rod 21 is fixedly connected to the outer surface of the cages 7. The protruding rods 21 are circumferentially distributed on the outer surface of the cages 7. A groove 22 is opened at the top end of each protruding rod 21. A rectangular groove 23 is opened on the outer surface of the stops 8, the rectangular groove 23 penetrating... On both sides of the stop block 8, the outer surface of the roller 9 has several micro-grooves 24, which are circumferentially distributed on the outer surface of the roller 9. When installing the double-row self-aligning roller bearing, by setting the protruding rod 21, one cage 7 is fitted onto the outer surface of the inner ring 6. Then, several rollers 9 are secured between the two stops 8 on the outer surface of the cage 7 to install the rollers 9 onto the cage 7. Then, another cage 7 is secured on the other side of the inner ring 6, and the rollers 9 are installed onto the outer surface of the cage 7 in the same way. Finally, the outer ring 1 is fitted onto the outer surfaces of the two cages 7 and the position is adjusted to complete the installation. Lubricating oil can be injected or added through the top of the inner ring 6 and the outer ring 1, as well as through the through hole 5 on the outer side of the outer ring 1. The lubricating oil inside the bearing adheres to the outer surfaces of the cage 7, outer ring 1, inner ring 6, and roller 9. The lubricating oil on the outer surface of roller 9 enters the microgrooves 24 on its outer surface, which act as lubricating oil reservoirs. Simultaneously, a large amount of lubricating oil enters the grooves 22 on the outer surface of the convex rod 21 and is stored there. When the inner ring 6 is assembled with the shaft and the outer ring 1 is assembled with the bearing housing, as the inner ring 6 rotates with the shaft, the roller 9 rolls between the raceways of the inner ring 6 and outer ring 1, thus transmitting motion and torque. Even when the shaft is subjected to bending or misalignment, the bearing can still automatically adjust itself because the outer ring 1 raceway is spherical and the inner ring 6 has two raceways tilted at a certain angle relative to the bearing axis. The angular error between the inner ring 6 and the outer ring 1 is minimized to maintain normal operation. By setting an auxiliary structure 2, several protruding rods 21 are installed on the outer surface of the cage 7, and several micro-grooves 24 are opened on the outer surface of the roller 9. When lubricating oil is added to the bearing, the lubricating oil inside the groove 22 of the protruding rod 21 will enter the rectangular groove 23 on the outer surface of the stop block 8, and as the lubricating oil on the outer surface of the roller 9 is consumed, it enters the outer surface of the roller 9 through the rectangular groove 23. At the same time, the micro-grooves 24 on the outer surface of the roller 9 can act as a lubricating oil reservoir, slowing down the consumption rate of lubricating oil and providing continuous and long-term lubrication for the roller 9. This minimizes the problem of dry friction caused by excessive consumption of lubricating oil, which leads to a decrease in bearing capacity.

[0028] Specifically, such as Figure 2-4As shown, auxiliary edges 25 are provided at the upper and lower ends of the roller 9. The outer edge of the auxiliary edges 25 is arc-shaped. By providing auxiliary edges 25 at the upper and lower ends of the roller 9, the lubricating oil between the convex rod 21 and the outer ring 1 and the inner ring 6 can enter the outer surface of the roller 9 more easily. Several semi-circular grooves 26 are provided at the bottom of the inner wall of the groove 22. The semi-circular grooves 26 are linearly distributed on the inner wall of the groove 22. By providing semi-circular grooves 26, the effect of lubricating oil remaining in the groove 22 can be further improved.

[0029] Specifically, such as Figure 2-4 As shown, support blocks 27 are fixedly connected to both sides of the protruding rod 21. The end of the support block 27 away from the protruding rod 21 is fixedly connected to one side of the stop block 8. By setting the support block 27, the connection between the protruding rod 21 and the retainer 7 can be reinforced and supported, thereby improving the stability of the connection structure between the protruding rod 21 and the retainer 7.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a sealing structure 3 is provided on the outer surface of the outer ring 1. The sealing structure 3 includes a metal rod 31, and rubber rods 32 are fixedly connected to both ends of the metal rod 31. The size and shape of the outer surface of the rubber rod 32 are adapted to the size and shape of the inner wall of the through hole 5. When the bearing is installed, the rubber rod 32 can be stuck inside the oil groove 4 on the outer surface of the outer ring 1. When the rubber rods 32 at both ends of the metal rod 31 come into contact with the maximum diameter of the outer ring 1, they will push the metal rod 31 to deform slightly outward. When the rubber rod 32 is located at the through hole 5, it will enter the interior of the through hole 5. At this time, the metal rod 31 returns to its original shape and fits against the inner wall of the oil groove 4. The metal rod 31 and the rubber rod 32 can further seal the oil groove 4 and the through hole 5, reducing the leakage of lubricating oil.

[0031] Specifically, such as Figure 2 , Figure 3 and Figure 5 As shown, a rubber ball 33 is fixedly connected to the end of the rubber rod 32 away from the metal rod 31. The diameter of the rubber ball 33 is larger than that of the rubber rod 32. When the rubber rod 32 is inserted into the through hole 5, the rubber ball 33 will be squeezed. By squeezing the rubber ball 33 into the through hole 5, the stability of the rubber rod 32 inside the through hole 5 can be improved, making it less likely for the rubber rod 32 to shake or loosen inside the through hole 5. Several protrusions 34 are fixedly connected to both ends of the metal rod 31. The protrusions 34 are located on the side of the outer surface of the metal rod 31 away from the rubber rod 32. When removing the metal rod 31, the protrusions 34 on both sides of the outer surface of the metal rod 31 can be pinched to make it easier to pull the metal rod 31 backward and pry it open to remove it.

[0032] The working principle of this utility model is as follows:

[0033] S1. When installing a double-row self-aligning roller bearing, place one cage 7 on the outer surface of the inner ring 6, then secure several rollers 9 between the two stops 8 on the outer surface of the cage 7 to install the rollers 9 onto the cage 7. Next, secure another cage 7 on the other side of the inner ring 6, and install the rollers 9 onto the outer surface of the cage 7 in the same way. Finally, place the outer ring 1 on the outer surfaces of the two cages 7 and adjust their positions to complete the installation. Lubricating oil can be injected through the top of the inner ring 6 and the outer ring 1, as well as the through hole 5 on the outer side of the outer ring 1. After entering the bearing, the lubricating oil will adhere to the outer surfaces of the cage 7, outer ring 1, inner ring 6, and rollers 9. The surface lubricating oil enters the microgroove 24 on the outer surface of the roller 9. The microgroove 24 can act as a lubricating oil reservoir. At the same time, a large amount of lubricating oil enters the groove 22 on the outer surface of the protruding rod 21 and is stored inside the groove 22. Then, the rubber rod 32 is stuck inside the oil groove 4 on the outer surface of the outer ring 1. When the rubber rods 32 at both ends of the metal rod 31 come into contact with the maximum diameter of the outer ring 1, they will push the metal rod 31 to deform slightly outward. When the rubber rod 32 is located at the through hole 5, it will enter the through hole 5. At this time, the metal rod 31 returns to its original shape and fits against the inner wall of the oil groove 4. The metal rod 31 and the rubber rod 32 can further seal the oil groove 4 and the through hole 5.

[0034] S2. When the inner ring 6 is assembled with the shaft and the outer ring 1 is assembled with the bearing housing, the inner ring 6 rotates with the shaft, and the roller 9 rolls between the raceways of the inner ring 6 and the outer ring 1, thereby realizing the transmission of motion and torque. When the shaft is bent by force or misaligned during installation, because the raceway of the outer ring 1 is spherical and the inner ring 6 has two raceways that are tilted at a certain angle relative to the bearing axis, the bearing can still automatically adjust the angular error between the inner ring 6 and the outer ring 1, thereby maintaining normal operation.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A high-load-bearing rolling mill bearing, comprising an outer ring (1), an inner ring (6), and two cages (7), characterized in that: The outer surface of the retainer (7) is fixedly connected with several blocks (8). Several rollers (9) are respectively provided on the outer surfaces of the two retainers (7). An oil groove (4) and two through holes (5) are opened on the outer surface of the outer ring (1). The through holes (5) penetrate the outer surface and inner wall of the outer ring (1). An auxiliary structure (2) is provided on the outer surface of the retainer (7). The auxiliary structure (2) includes several protruding rods (21). One end of the protruding rod (21) is fixedly connected to the outer surface of the retainer (7). The protruding rods (21) are distributed circumferentially on the outer surface of the retainer (7). A groove (22) is opened at the top of the protruding rod (21). A rectangular groove (23) is opened on the outer surface of the block (8). The rectangular groove (23) penetrates the left and right sides of the block (8). Several micro grooves (24) are opened on the outer surface of the roller (9). The micro grooves (24) are distributed circumferentially on the outer surface of the roller (9).

2. A high load capacity rolling mill bearing according to claim 1, characterized in that: The roller (9) has auxiliary edges (25) at its upper and lower ends, and the outer edge of the auxiliary edges (25) is arc-shaped.

3. A high load capacity rolling mill bearing according to claim 2, characterized in that: The bottom of the inner wall of the groove (22) is provided with a number of semi-circular grooves (26), which are linearly distributed on the inner wall of the groove (22).

4. A high load capacity rolling mill bearing according to claim 3, characterized in that: Support blocks (27) are fixedly connected to both sides of the protruding rod (21), and the end of the support block (27) away from the protruding rod (21) is fixedly connected to one side of the stop block (8).

5. A high load capacity rolling mill bearing according to claim 1, characterized in that: The outer surface of the outer ring (1) is provided with a sealing structure (3), the sealing structure (3) includes a metal rod (31), and rubber rods (32) are fixedly connected to both ends of the metal rod (31). The size and shape of the outer surface of the rubber rod (32) are adapted to the size and shape of the inner wall of the through hole (5).

6. A high load capacity rolling mill bearing according to claim 5, characterized in that: A rubber ball (33) is fixedly connected to the end of the rubber rod (32) away from the metal rod (31), and the diameter of the rubber ball (33) is larger than the diameter of the rubber rod (32).

7. A high-load-bearing rolling mill bearing according to claim 6, characterized in that: Several protrusions (34) are fixedly connected to both ends of the metal rod (31), and the protrusions (34) are located on the outer surface of the metal rod (31) away from the rubber rod (32).

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