Double-row cylindrical roller bearing with good sealing performance

Abstract

The utility model discloses a double-row cylindrical roller bearing with good sealing performance, which belongs to the technical field of bearings, and comprises an outer ring, an inner ring, a retainer and a plurality of roller bodies, the roller bodies are arranged on the outer surface of the retainer, sealing structures are respectively arranged at two ends of the inner ring, each sealing structure comprises a sealing ring, and the sealing rings are arranged on the outer surface of the retainer. Two groove blocks are fixedly connected to one side of the sealing ring, clamping blocks are slidably connected to the inner walls of the groove blocks, springs are arranged at one ends of the clamping blocks, and clamping grooves are formed in one ends of the inner walls of the inserting grooves. The groove blocks on the outer surfaces of the sealing rings are clamped into the insertion grooves in the outer surface of the inner ring through the upper end and the lower end of the inner ring respectively, the sealing rings are installed in the gaps between the upper ends and the lower ends of the inner ring and the outer ring, the gaps between the upper ends and the lower ends of the inner ring and the outer ring are covered and sealed, and the phenomenon that internal lubricating oil runs out of the bearing when the bearing works is reduced; the consumption rate of lubricating oil in the bearing is reduced, and the sealing performance of the bearing is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, specifically a double-row cylindrical roller bearing with good sealing performance. Background Technology

[0002] Double-row cylindrical roller bearings are high-performance bearings capable of withstanding high radial loads. They are typically suitable for applications with large loads and high rigidity requirements. The bearing body is usually made of 45 steel, which undergoes quenching and tempering and surface grinding to improve precision and durability.

[0003] Double-row cylindrical roller bearings typically consist of an outer ring, an inner ring, a cage, and two sets of cylindrical rollers mounted on the cage. The cage and both the inner and outer rings are designed to be detachable, facilitating the disassembly and replacement of internal components of the roller bearing.

[0004] When installing and using double-row roller bearings, lubricating oil is usually applied to the inner ring cage and rollers to improve the stability of the roller bearing during rotation and reduce friction. However, during the use of the bearing, the lubricating oil is very easy to run out from the inside of the bearing due to the rotation of the bearing, which makes the lubricating oil consumed too quickly inside the bearing. This requires frequent lubrication of the bearing, resulting in a decrease in the practicality of the bearing during use. 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 double-row cylindrical roller bearing with good sealing performance, which solves the problem that during the use of the bearing, the lubricating oil is easily run out from the inside of the bearing due to the rotation of the bearing, resulting in the lubricating oil being consumed too quickly inside the bearing, requiring frequent oiling, and thus reducing the practicality of the bearing during use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a double-row cylindrical roller bearing with good sealing performance, comprising an outer ring, an inner ring, a cage, and a plurality of roller bodies. The roller bodies are mounted on the outer surface of the cage. Sealing structures are respectively provided at both ends of the inner ring. The sealing structure includes a sealing ring. Two groove blocks are fixedly connected to one side of the sealing ring. A retaining block is slidably connected to the inner wall of the groove block. A spring is provided at one end of the retaining block. The spring is installed inside the groove block to limit the position of the spring inside the groove block. Two slots are respectively opened at the upper and lower ends of the inner ring. A retaining groove is opened at one end of the inner wall of the slot.

[0009] As a further embodiment of this utility model: the end of the locking block away from the spring is provided with an inclined surface, which is located on the side of the locking block away from the sealing ring.

[0010] As a further embodiment of this utility model: a groove is provided on one side of the card block, and several through grooves are provided on the inner wall of the inner ring.

[0011] As a further embodiment of this utility model: two protruding strips are fixedly connected to one end of the card block. The two protruding strips are made of rubber and are distributed on the upper and lower sides of the card block.

[0012] As a further embodiment of this utility model: a round rod is fixedly connected to the inner wall of the groove block, and the locking block slides on the outer surface of the round rod.

[0013] As a further embodiment of this utility model: the inner wall of the through groove is provided with an auxiliary structure, the auxiliary structure including a rotating shaft, the upper and lower ends of the rotating shaft being rotatably connected to the upper and lower ends of the inner wall of the through groove, and an arc-shaped piece being fixedly connected to the outer surface of the rotating shaft, the size of the outer surface of the arc-shaped piece being adapted to the size of the inner wall of the through groove.

[0014] As a further embodiment of this utility model: sealing plates are respectively provided at the upper and lower ends of the arc-shaped piece, and the sealing plates protrude from the upper and lower ends of the arc-shaped piece.

[0015] (III) Beneficial Effects

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

[0017] 1. This double-row cylindrical roller bearing, through the setting of a sealing structure, during bearing installation, by inserting the grooved blocks on the outer surface of a sealing ring into the slots on the outer surface of the inner ring at both the upper and lower ends, the sealing ring is installed in the gap between the upper and lower ends of the inner and outer rings, covering and sealing the gap between the upper and lower ends of the inner and outer rings, reducing the phenomenon of internal lubricating oil escaping from the bearing during operation, reducing the consumption rate of lubricating oil inside the bearing, and improving the sealing performance of the bearing.

[0018] 2. For this double-row cylindrical roller bearing, a metal rod or other tool can be inserted through the through groove on the inner wall of the inner ring and into the groove on one side of the retaining block to push the retaining block to move and disengage it from the groove. Then, by pulling the sealing ring upwards, the retaining block can be removed from the slot and the sealing ring can be removed.

[0019] 3. This double-row cylindrical roller bearing, by setting an auxiliary structure, can seal the through groove with an arc-shaped plate, further improving the sealing effect of the sealing structure on the lubricating oil inside the bearing. When it is necessary to remove the sealing ring, simply pull the arc-shaped plate and rotate it outward by rotating the shaft to expose the through groove. 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 inner ring of this utility model;

[0023] Figure 4 This is a schematic diagram of the sealing ring structure of this utility model;

[0024] Figure 5 This is a partial cross-sectional structural diagram of the groove block of this utility model;

[0025] Figure 6 This utility model Figure 5 A magnified structural diagram of part A;

[0026] Figure 7 This is a schematic diagram of the structure of the rotating shaft of this utility model.

[0027] In the diagram: 1. Outer ring; 2. Sealing structure; 3. Auxiliary structure; 4. Cage; 5. Roller body; 6. Inner ring; 21. Slot; 22. Slot; 23. Sealing ring; 24. Groove block; 25. Slot block; 26. Spring; 27. Groove; 28. Through groove; 29. ​​Raised strip; 210. Round rod; 31. Shaft; 32. Arc-shaped piece; 33. Sealing piece. Detailed Implementation

[0028] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0029] like Figure 1-6As shown, this utility model provides a technical solution: a double-row cylindrical roller bearing with good sealing performance, including an outer ring 1, an inner ring 6, a cage 4, and a plurality of roller bodies 5. The roller bodies 5 are mounted on the outer surface of the cage 4. Sealing structures 2 are respectively provided at both ends of the inner ring 6. The sealing structure 2 includes a sealing ring 23. Two groove blocks 24 are fixedly connected to one side of the sealing ring 23. A retaining block 25 is slidably connected to the inner wall of the groove block 24. A spring 26 is provided at one end of the retaining block 25. The spring 26 is installed inside the groove block 24 to limit the position of the spring 26 inside the groove block 24. The upper part of the inner ring 6... Two slots 21 are respectively opened at the lower two ends. A groove 22 is opened at one end of the inner wall of the slot 21. When installing the double row cylindrical roller bearing, the cage 4 is fitted onto the outer surface of the inner ring 6. Several rollers 5 are clamped onto the outside of the cage 4 at both ends. Then, the outer ring 1 is fitted onto the outside of the cage 4 and the inner ring 6. Lubricating oil is added to the contact points of the cage 4, the outer ring 1 and the inner ring 6. Then, a sealing ring 23 with two grooves 24 at the bottom end is inserted into the two slots 21 on both sides of the outer surface of the inner ring 6 at the upper and lower ends respectively. The locking block 25 at one end of the groove 24 is pressed to make the locking block 25... 5. Slide the block 24 into the slot and compress the spring 26. Insert the block 24 into the slot 21 and continue moving. When the bottom end of the block 24 contacts the bottom end of the inner wall of the slot 21, the spring 26 returns to its original state and pushes the locking block 25 outward, locking the locking block 25 into the slot 22 inside the slot 21. This fixes the position of the block 24 inside the slot 21 and the position of the sealing ring 23 on the outer surface of the inner ring 6 and the outer ring 1. Then, install another sealing ring 23 on the other end of the inner ring 6. The two sealing rings 23 cover and seal the gap between the upper and lower ends of the inner ring 6 and the outer ring 1. When the bearing is working... The bearing transmits motion and bears load by rolling cylindrical rollers 5 between the raceways of the inner ring 6 and the outer ring 1. By setting a sealing structure 2, when installing the bearing, the grooves 24 on the outer surface of a sealing ring 23 are inserted into the slots 21 on the outer surface of the inner ring 6 at the upper and lower ends, and the sealing rings 23 are installed in the gap between the upper and lower ends of the inner ring 6 and the outer ring 1, covering and sealing the gap between the upper and lower ends of the inner ring 6 and the outer ring 1. This reduces the phenomenon of lubricating oil running out of the bearing during operation, reduces the consumption rate of lubricating oil inside the bearing, and improves the sealing performance of the bearing.

[0030] Specifically, such as Figure 2-6As shown, the end of the locking block 25 away from the spring 26 is provided with an inclined surface. The inclined surface is located on the side of the locking block 25 away from the sealing ring 23. By setting the edge of the locking block 25 away from the spring 26 as an inclined surface, when the groove 24 at the bottom of the sealing ring 23 is inserted into the slot 21, the inclined surface at the bottom of the locking block 25 contacts the top of the inner wall of the slot 21, which can push the locking block 25 into the groove 24, improving the convenience of installing the sealing ring 23. A groove 27 is provided on one side of the locking block 25, and several through grooves 28 are provided on the inner wall of the inner ring 6. When it is necessary to remove the sealing ring 23, a metal rod or other tool is inserted through the through groove 28 on the inner wall of the inner ring 6 into the groove 27 on one side of the locking block 25 to push the locking block 25 and control the locking block 25 to move out of the slot 22. Then, the sealing ring 23 is pulled upward to remove the groove 24 from the slot 21 and remove the sealing ring 23.

[0031] Specifically, such as Figure 2-6 As shown, one end of the locking block 25 is fixedly connected to two protrusions 29. The two protrusions 29 are made of rubber and are distributed on the upper and lower sides of the locking block 25. By setting the protrusions 29, the friction between the outer surface of the locking block 25 and the inner wall of the slot block 24 can be increased, making it difficult for the locking block 25 to move on its own after it is locked into the slot 22. A round rod 210 is fixedly connected to the inner wall of the slot block 24. The locking block 25 slides on the outer surface of the round rod 210. When controlling the movement of the locking block 25, the locking block 25 will slide on the outer surface of the round rod 210. The round rod 210 can further limit the angle between the locking block 25 and the slot block 24, further preventing the locking block 25 from shaking inside the slot block 24.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the inner wall of the through groove 28 is provided with an auxiliary structure 3, which includes a rotating shaft 31. The upper and lower ends of the rotating shaft 31 are rotatably connected to the upper and lower ends of the inner wall of the through groove 28. An arc-shaped piece 32 is fixedly connected to the outer surface of the rotating shaft 31. The size of the outer surface of the arc-shaped piece 32 is adapted to the size of the inner wall of the through groove 28. When the bearing is installed, the inner ring 6 is fitted on the outside of the shaft of the equipment so that the arc-shaped piece 32 inside the through groove 28 will not rotate. The arc-shaped piece 32 can seal the through groove 28, further improving the sealing effect of the sealing structure 2 on the lubricating oil inside the bearing. When the sealing ring 23 needs to be removed, the arc-shaped piece 32 is pulled outward through the rotating shaft 31 to expose the through groove 28. The upper and lower ends of the arc-shaped piece 32 are respectively provided with sealing pieces 33. The sealing pieces 33 protrude from the upper and lower ends of the arc-shaped piece 32. By setting the sealing pieces 33, the contact between the arc-shaped piece 32 and the inner wall of the through groove 28 can be further sealed, improving the sealing effect of the arc-shaped piece 32 on the through groove 28.

[0033] The working principle of this utility model is as follows:

[0034] S1. When installing a double-row cylindrical roller bearing, place the cage 4 on the outer surface of the inner ring 6, and secure several rollers 5 to the outside of the cage 4 at both ends. Then, place the outer ring 1 on the outside of the cage 4 and the inner ring 6. Add lubricating oil to the contact points of the cage 4, outer ring 1, and inner ring 6. Next, insert the two grooved blocks 24 at the bottom of a sealing ring 23 into the two slots 21 on both sides of the outer surface of the inner ring 6 at the top and bottom ends respectively. Press the locking block 25 at one end of the grooved block 24 to slide the locking block 25 into the grooved block 24 and compress the spring 26. Insert the grooved block 24 into the slot 21 and continue to move it. When the bottom end of the slot 24 contacts the bottom end of the inner wall of the slot 21, the spring 26 returns to its original state and pushes the locking block 25 outward, locking the locking block 25 into the slot 22 inside the slot 21. This fixes the position of the slot 24 inside the slot 21 and the position of the sealing ring 23 on the outer surface of the inner ring 6 and the outer ring 1. Then, another sealing ring 23 is installed at the other end of the inner ring 6. The gap between the upper and lower ends of the inner ring 6 and the outer ring 1 is covered and sealed by the two sealing rings 23. When the bearing is working, the motion transmission and load bearing are achieved by the cylindrical rollers 5 rolling between the raceways of the inner ring 6 and the outer ring 1.

[0035] S2. When it is necessary to remove the sealing ring 23, pull the arc-shaped piece 32 outward through the pivot 31 to expose the through groove 28. Use a metal rod or other tool to pass through the through groove 28 on the inner wall of the inner ring 6 and insert it into the groove 27 on one side of the locking block 25. This can push the locking block 25 to control its movement and disengage it from the slot 22. Then, pull the sealing ring 23 upward to remove the slot block 24 from the slot 21 and remove the sealing ring 23.

[0036] 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.

[0037] 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 double-row cylindrical roller bearing with good sealing performance, comprising an outer ring (1), an inner ring (6), a cage (4), and a plurality of roller bodies (5), characterized in that: The roller body (5) is mounted on the outer surface of the cage (4). The inner ring (6) is provided with sealing structures (2) at both ends. The sealing structure (2) includes a sealing ring (23). Two groove blocks (24) are fixedly connected to one side of the sealing ring (23). A locking block (25) is slidably connected to the inner wall of the groove block (24). A spring (26) is provided at one end of the locking block (25). The spring (26) is installed inside the groove block (24) to limit the position of the spring (26) inside the groove block (24). Two slots (21) are opened at the upper and lower ends of the inner ring (6). A locking groove (22) is opened at one end of the inner wall of the slot (21).

2. The double-row cylindrical roller bearing with good sealing performance according to claim 1, characterized in that: The end of the locking block (25) away from the spring (26) is provided with an inclined surface, which is located on the side of the locking block (25) away from the sealing ring (23).

3. A double-row cylindrical roller bearing with good sealing performance according to claim 2, characterized in that: The card block (25) has a groove (27) on one side, and the inner wall of the inner ring (6) has several through grooves (28).

4. A double-row cylindrical roller bearing with good sealing performance according to claim 3, characterized in that: Two protrusions (29) are fixedly connected to one end of the card block (25). The two protrusions (29) are made of rubber and are distributed on the upper and lower sides of the card block (25).

5. A double-row cylindrical roller bearing with good sealing performance according to claim 4, characterized in that: A round rod (210) is fixedly connected to the inner wall of the groove block (24), and the locking block (25) slides on the outer surface of the round rod (210).

6. A double-row cylindrical roller bearing with good sealing performance according to claim 3, characterized in that: The inner wall of the through groove (28) is provided with an auxiliary structure (3), the auxiliary structure (3) includes a rotating shaft (31), the upper and lower ends of the rotating shaft (31) are rotatably connected to the upper and lower ends of the inner wall of the through groove (28), and an arc-shaped piece (32) is fixedly connected to the outer surface of the rotating shaft (31), the size of the outer surface of the arc-shaped piece (32) is adapted to the size of the inner wall of the through groove (28).

7. A double-row cylindrical roller bearing with good sealing performance according to claim 6, characterized in that: The upper and lower ends of the arc-shaped piece (32) are respectively provided with sealing pieces (33), and the sealing pieces (33) protrude from the upper and lower ends of the arc-shaped piece (32).

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