Double-row cylindrical roller bearing convenient to lubricate
By setting up an auxiliary structure in the bearing, lubrication of components such as the inner ring, outer ring and cage without disassembly is achieved, the problem of disassembly and lubrication in the prior art is solved, and the flexibility and practicality of the bearing are improved.
Patent Information
- Application Number
- CN202422342133.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing double-row cylindrical roller bearings need to be removed after installation to be fully lubricated, resulting in low flexibility during use.
Auxiliary structures are provided in the bearing, including circular tubes, conduits, oil collection grooves and annular grooves, etc., and lubricating oil is added through the through holes, so that the lubricating oil is automatically distributed to the key contact surface when the bearing rotates, achieving lubrication without disassembly.
It improves the flexibility and practicality of bearings, ensures that the contacts of components such as the inner ring, outer ring and cage are fully lubricated, reduces lubricant leakage, and improves the convenience and durability of the bearings.
Smart Images
Figure CN223062914U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cylindrical roller bearings, and particularly relates to a double-row cylindrical roller bearing convenient for lubrication. Background Technique
[0002] The double-row cylindrical roller bearing is a high-performance bearing that can withstand high radial loads and is usually applicable to occasions with large loads and high rigidity requirements. The main body material of the bearing is usually 45 steel, which is subjected to quenching and tempering treatment and surface grinding to improve accuracy and durability.
[0003] The double-row cylindrical roller bearing usually consists of an outer ring, an inner ring, a cage, and two groups of cylindrical rollers installed on the cage. The cage and the inner and outer rings are both designed to be disassembled and assembled, which is convenient for disassembling and replacing the components inside the roller bearing.
[0004] When installing the double-row cylindrical roller bearing, lubrication treatment is usually carried out on the inside of the bearing and the connection between the bearing and the shaft to improve the rotation effect of the bearing. When internal lubrication of the bearing is required after the bearing is installed, the bearing needs to be removed to fully lubricate the bearing, resulting in the problem of low flexibility when using the bearing. Content of the Utility Model
[0005] (1) Technical Problems to be Solved
[0006] In order to overcome the above defects of the prior art, the utility model provides a double-row cylindrical roller bearing convenient for lubrication, which solves the problem that when internal lubrication of the bearing is required after the bearing is installed, the bearing needs to be removed to fully lubricate the bearing, resulting in the problem of low flexibility when using the bearing.
[0007] (2) Technical Solutions
[0008] To achieve the above object, the utility model provides the following technical solution: A double-row cylindrical roller bearing convenient for lubrication, including an outer ring, an inner ring, and a cage. A number of roller bodies are respectively arranged on both sides of the cage. The cage and the roller bodies are located between the inner ring and the outer ring. An auxiliary structure is arranged on the outer surface of the cage. The auxiliary structure includes two round tubes and four ducts. One ends of the two round tubes are respectively fixedly connected to both sides of the outer surface of the cage. One ends of the four ducts are respectively fixedly connected to one side of the inner wall of the cage. An oil collecting groove is opened inside the cage. The inside of the oil collecting groove communicates with the inside of the ducts and the round tubes respectively. Two through holes are opened on the outer surface of the outer ring. Four round holes are opened on the outer surface of the inner ring. An annular groove is opened on the outer surface of the inner ring. One end of the duct moves inside the annular groove.
[0009] As a further solution of the present utility model: annular strips are fixedly connected to the upper and lower ends of the inner wall of the annular groove, and the annular strips protrude from the inner wall of the annular groove.
[0010] As a further solution of the present utility model: a reinforcing ring is fixedly connected to one end of the conduit, and the reinforcing ring is a steel metal ring with a smooth surface.
[0011] As a further solution of the present utility model: two reinforcing rods are fixedly connected to the outer surface of the conduit, and the ends of the two reinforcing rods away from the conduit are respectively fixedly connected to one side of the cage.
[0012] As a further solution of the present utility model: a protective structure is arranged on the outer surface of the outer ring, the protective structure includes an arc-shaped rod, round blocks are fixedly connected to both ends of the arc-shaped rod, semi-circular grooves are formed on the outer surface of the outer ring, two through holes are located at both ends of the inner wall of the semi-circular groove, and the outer surface size of the round block is adapted to the inner wall size of the through hole.
[0013] As a further solution of the present utility model: convex strips are fixedly connected to the upper and lower ends of the inner wall of the semi-circular groove, and a rubber sheet is fixedly connected to the outer surface of the arc-shaped rod.
[0014] As a further solution of the present utility model: two grooves are formed on one side of the arc-shaped rod, and the two grooves are respectively located on the left and right sides of the rubber sheet.
[0015] (III) Beneficial effects
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] 1. For this double-row cylindrical roller bearing facilitating lubrication, by setting the auxiliary structure, lubricating oil is added to the oil collecting groove inside the cage through the through holes. When the bearing rotates, the through holes on the outer surface of the outer ring are staggered from the position of the round tube, and the lubricating oil inside the oil collecting groove is thrown to the annular grooves on the inner wall of the outer ring and the outer surface of the inner ring, lubricating the contact parts of the outer ring, the cage and the inner ring. It is not necessary to disassemble the bearing, improving the flexibility and practicality of the bearing during use.
[0018] 2. For this double-row cylindrical roller bearing facilitating lubrication, when the bearing rotates, the lubricating oil inside the annular groove is guided to the inner wall of the inner ring through the round holes, lubricating the contact part between the inner ring and the shaft, further improving the flexibility and convenience of the bearing during use.
[0019] 3. For this double-row cylindrical roller bearing facilitating lubrication, the through holes can be blocked by the round blocks, further reducing the probability of the lubricating oil inside the cage leaking out through the through holes, and further improving the practicality of the auxiliary structure. Description of the drawings
[0020] Figure 1 Schematic three-dimensional structure diagram of the present utility model;
[0021] Figure 2 Exploded schematic three-dimensional structure diagram of the present utility model;
[0022] Figure 3 Schematic structure diagram of the cage part of the present utility model;
[0023] Figure 4 Schematic structure diagram of the inner ring part of the present utility model;
[0024] Figure 5 Partial sectional schematic structure diagram of the cage part of the present utility model.
[0025] In the figure: 1, outer ring; 2, auxiliary structure; 3, protective structure; 4, inner ring; 5, cage; 6, roller body; 21, through hole; 22, round tube; 23, oil sump; 24, conduit; 25, annular groove; 26, round hole; 27, annular strip; 28, reinforcing ring; 29, reinforcing rod; 31, semi-circular groove; 32, arc rod; 33, round block; 34, rubber sheet; 35, convex strip; 36, groove. Detailed implementation manners
[0026] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.
[0027] As Figures 1-5As shown in the figure, the utility model provides a technical solution: a double-row cylindrical roller bearing facilitating lubrication, which includes an outer ring 1, an inner ring 4 and a cage 5. A number of roller bodies 6 are respectively arranged on both sides of the cage 5. The cage 5 and the roller bodies 6 are located between the inner ring 4 and the outer ring 1. An auxiliary structure 2 is arranged on the outer surface of the cage 5. The auxiliary structure 2 includes two round tubes 22 and four conduits 24. One ends of the two round tubes 22 are respectively fixedly connected to both sides of the outer surface of the cage 5. One ends of the four conduits 24 are respectively fixedly connected to one side of the inner wall of the cage 5. An oil collecting groove 23 is formed inside the cage 5. The inside of the oil collecting groove 23 communicates with the inside of the conduits 24 and the round tubes 22 respectively. Two through holes 21 are formed on the outer surface of the outer ring 1. Four round holes 26 are formed on the outer surface of the inner ring 4. An annular groove 25 is formed on the outer surface of the inner ring 4. One end of the conduit 24 moves inside the annular groove 25. By providing the round tubes 22, when the inside of the bearing needs to be lubricated after the roller bearing is installed, the outer ring 1 or the inner ring 4 and the cage 5 can be pushed to rotate. When observing through the through hole 21 that the round tube 22 on the outside of the cage 5 is aligned with the through hole 21, lubricating oil is added to the round tube 22 through the through hole 21. The lubricating oil will enter the oil collecting groove 23 inside the cage 5 through the round tube 22. When the inner ring 4, the cage 5 and the outer ring 1 rotate during normal use of the bearing, the through hole 21 will be displaced from the position of the round tube 22. At the same time, the lubricating oil inside the oil collecting groove 23 will be thrown into the conduit 24. The lubricating oil is guided into the annular groove 25 on the outer surface of the inner ring 4 through the conduit 24. The lubricating oil inside the annular groove 25 will enter the contact part between the inner ring 4 and the shaft through the round holes 26 inside the annular groove 25. It is not necessary to disassemble the bearing, which is convenient for lubricating the inner ring 4, the outer ring 1, the cage 5 and the contact part between the inner ring 4 and the shaft, and improves the flexibility and practicability of the bearing during use.
[0028] Specifically, as Figures 2-5 shown, annular strips 27 are fixedly connected to the upper and lower ends of the inner wall of the annular groove 25. The annular strips 27 protrude from the inner wall of the annular groove 25. By providing the annular strips 27, the lubricating oil entering the annular groove 25 can be stored, the rate of the lubricating oil leaking outwards inside the annular groove 25 is slowed down, and the holding effect of the lubricating oil outside the inner ring 4 is improved. A reinforcing ring 28 is fixedly connected to one end of the conduit 24. The reinforcing ring 28 is a steel metal ring with a smooth surface. By providing the reinforcing ring 28, the surface contact of one end of the conduit 24 located inside the annular groove 25 can be strengthened, and as much as possible, the surface of one end of the conduit 24 is prevented from being severely worn and cracked when moving inside the annular groove 25.
[0029] Specifically, as Figures 2-5As shown, two reinforcing rods 29 are fixedly connected to the outer surface of the catheter 24, and one end of the two reinforcing rods 29 away from the catheter 24 is fixedly connected to one side of the retaining frame 5 respectively. By providing the reinforcing rods 29, the connection between the catheter 24 and the retaining frame 5 can be reinforced, thereby improving the stability of the connection structure between the catheter 24 and the retaining frame 5.
[0030] Specifically, Figures 1-2 As shown, a protective structure 3 is provided on the outer surface of the outer ring 1, and the protective structure 3 includes an arc rod 32, and round blocks 33 are fixedly connected at both ends of the arc rod 32. A semicircular groove 31 is opened on the outer surface of the outer ring 1, and two through holes 21 are located at both ends of the inner wall of the semicircular groove 31. The size of the outer surface of the round block 33 is adapted to the size of the inner wall of the through hole 21. After the bearing is installed and lubricating oil is added to the inside of the bearing through the auxiliary structure 2, the round blocks 33 at both ends of the arc rod 32 can be respectively inserted into the two through holes 21 at both ends of the inner wall of the semicircular groove 31, so that the arc rod 32 is completely inside the semicircular groove 31, and the through hole 21 is blocked by the round block 33, thereby further reducing the probability of the lubricating oil inside the retaining frame 5 leaking out through the through hole 21, thereby improving the practicality of the auxiliary structure 2.
[0031] Specifically, Figures 1-2 As shown, the upper and lower ends of the inner wall of the semicircular groove 31 are fixedly connected with convex strips 35, and the outer surface of the arc rod 32 is fixedly connected with a rubber sheet 34. When the arc rod 32 is installed inside the semicircular groove 31, the rubber sheet 34 on the outer surface of the arc rod 32 contacts the two convex strips 35 on the inner wall of the semicircular groove 31, which will cause the rubber sheet 34 to deform, and then the rubber sheet 34 will be stuck between the semicircular groove 31 and the two convex strips 35. The arc rod 32 can be fixed in the semicircular groove through the convex strips 35 and the rubber sheet 34. The position inside the semicircular groove 31 is further restricted to prevent the arc rod 32 from accidentally escaping from the semicircular groove 31 as much as possible. Two grooves 36 are provided on one side of the arc rod 32. The two grooves 36 are respectively located on the left and right sides of the rubber sheet 34. When the bearing needs to be lubricated through the auxiliary structure 2, the arc rod 32 can be squeezed toward the middle by pinching the two grooves 36 on the outer surface of the arc rod 32, so that the round blocks 33 at both ends of the arc rod 32 can be pulled out from the inside of the through hole 21 and the arc rod 32 can be removed.
[0032] The working principle of the utility model is:
[0033] S1. When installing the bearing, place each roller body 6 on the upper and lower sides of the outer surface of the retainer 5, so that two rows of roller bodies 6 are formed on the outer surface of the retainer 5. Then put the retainer 5 into the outer ring 1, and then put the inner ring 4 into the retainer 5, and install the bearing inner ring 4 on the outside of the shaft.
[0034] S2. When it is necessary to add lubricating oil to the inside of the bearing, the outer ring 1 or the inner ring 4 and the retainer 5 can be pushed to rotate. When the round tube 22 on the outside of the retainer 5 is observed to be aligned with the through hole 21 through the through hole 21, lubricating oil is added to the round tube 22 through the through hole 21. After the lubricating oil is added, the round blocks 33 at both ends of the arc rod 32 are respectively inserted into the two through holes 21 at both ends of the inner wall of the semicircular groove 31, so that the arc rod 32 is completely inside the semicircular groove 31, and the through hole 21 is blocked by the round block 33. When the bearing is operating, the lubricating oil will pass through the round tube The through hole 22 enters the oil collecting groove 23 inside the retainer 5. When the inner ring 4, the retainer 5 and the outer ring 1 are in normal use, the through hole 21 will be offset from the position of the round tube 22, and the lubricating oil in the oil collecting groove 23 will be thrown into the conduit 24. The lubricating oil is guided to the inside of the annular groove 25 on the outer surface of the inner ring 4 through the conduit 24. The lubricating oil in the annular groove 25 will enter the contact between the inner ring 4 and the shaft through the circular hole 26 inside the annular groove 25, so as to lubricate the inner ring 4, the outer ring 1 and the retainer 5 of the bearing and the contact between the inner ring 4 and the shaft.
[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0036] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A double-row cylindrical roller bearing facilitating lubrication, comprising an outer ring (1), an inner ring (4) and a cage (5), characterized in that: On both sides of the cage (5), a number of roller bodies (6) are respectively arranged. The cage (5) and the roller bodies (6) are located between the inner ring (4) and the outer ring (1). An auxiliary structure (2) is arranged on the outer surface of the cage (5). The auxiliary structure (2) includes two circular tubes (22) and four ducts (24). One end of each of the two circular tubes (22) is fixedly connected to both sides of the outer surface of the cage (5). One end of each of the four ducts (24) is fixedly connected to one side of the inner wall of the cage (5). An oil collecting groove (23) is formed inside the cage (5). The interior of the oil collecting groove (23) communicates with the interiors of the ducts (24) and the circular tubes (22). Two through holes (21) are formed on the outer surface of the outer ring (1). Four circular holes (26) are formed on the outer surface of the inner ring (4). An annular groove (25) is formed on the outer surface of the inner ring (4). One end of the duct (24) moves inside the annular groove (25).
2. The double-row cylindrical roller bearing convenient for lubrication according to claim 1, wherein: At the upper and lower ends of the inner wall of the annular groove (25), an annular strip (27) is fixedly connected. The part of the annular strip (27) protrudes from the inner wall of the annular groove (25).
3. The double-row cylindrical roller bearing convenient for lubrication according to claim 2, characterized in that: One end of the duct (24) is fixedly connected with a reinforcing ring (28). The reinforcing ring (28) is a steel metal ring with a smooth surface.
4. The double-row cylindrical roller bearing convenient for lubrication according to claim 3, characterized in that: Two reinforcing rods (29) are fixedly connected to the outer surface of the duct (24). One end of each of the two reinforcing rods (29) away from the duct (24) is fixedly connected to one side of the cage (5).
5. A double-row cylindrical roller bearing facilitating lubrication according to claim 1, characterized in that: A protective structure (3) is arranged on the outer surface of the outer ring (1). The protective structure (3) includes an arc-shaped rod (32). At both ends of the arc-shaped rod (32), round blocks (33) are fixedly connected. A semi-circular groove (31) is formed on the outer surface of the outer ring (1). The two through holes (21) are located at both ends of the inner wall of the semi-circular groove (31). The outer surface size of the round block (33) is adapted to the inner wall size of the through hole (21).
6. The double-row cylindrical roller bearing convenient for lubrication according to claim 5, wherein: At the upper and lower ends of the inner wall of the semi-circular groove (31), convex strips (35) are fixedly connected. A rubber sheet (34) is fixedly connected to the outer surface of the arc-shaped rod (32).
7. A double-row cylindrical roller bearing facilitating lubrication according to claim 6, characterized in that: Two grooves (36) are formed on one side of the arc-shaped rod (32). The two grooves (36) are respectively located on the left and right sides of the rubber sheet (34).