Cylindrical roller bearing

Abstract

The utility model discloses a cylindrical roller bearing which comprises an outer ring and an inner ring which are coaxially arranged, an inner sliding groove is formed in the outer ring, an outer sliding groove is formed in the inner ring, inclined grooves are symmetrically formed in the inner sliding groove and the outer sliding groove, and the cylindrical roller bearing further comprises a limiting frame and a limiting cover which are riveted through rivets to limit a plurality of rollers. And oil guide holes are formed in the limiting frame and the limiting cover. According to the cylindrical roller bearing provided by the utility model, due to the existence of the oil guide hole, the roller rolls and slides in a guiding manner, so that lubricating oil gradually flows into a gap between the end surface of the roller and the limiting frame and a gap between the end surface of the roller and the limiting cover under the action of rotating force and capillary; and then the lubricating oil liquid gathered at the position can flow out to the inclined groove 9 again along the oil guide hole and is adhered to the annular peripheral side surface of the roller again, so that the condition that the lubricating oil liquid is gathered at a gap between the end part of the roller and the retainer to cause insufficient lubrication between the roller and the outer ring and the inner ring is avoided, and the protection of the roller is improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and more specifically to cylindrical roller bearings. Background Technology

[0002] Cylindrical roller bearings consist of an outer ring, an inner ring, a cage, and rollers.

[0003] According to announcement number CN202946558U, announcement date: May 22, 2013, a cylindrical roller bearing is disclosed, including an outer ring, a cage, two retaining rings, an inner ring, and multiple rollers. The cage is fitted onto the inner ring, and the outer ring is fitted onto the cage. The multiple rollers are connected to the cage, and the inner ring is rolled onto the outer ring via rollers. The two retaining rings are fixedly connected to the inner ring and are located on both sides of the rollers. It also has two sealing rings. The inner wall of the outer ring has annular locking grooves on both sides. The outer periphery of the sealing ring is a locking segment. The locking segments of the two sealing rings are respectively locked onto the corresponding annular locking grooves of the outer ring. The inner ring is an elastic segment that abuts against the outer periphery of the inner ring.

[0004] In the prior art, including the aforementioned patent, a cage is used to limit and connect multiple rollers, and the rollers are positioned between the outer ring and the inner ring for rolling and guiding. During the rolling and guiding process, a gap inevitably occurs between the end of the roller and the cage, causing the lubricating oil to flow to the gap between the end of the roller and the cage under the influence of the roller rotation and capillary action. This results in insufficient lubrication between the roller cylindrical surface and the inside of the outer and inner rings. Utility Model Content

[0005] The purpose of this invention is to provide a cylindrical roller bearing to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical roller bearing, including rivets and rollers, and coaxially arranged outer and inner rings. The outer ring has an inner sliding groove, and the inner ring has an outer sliding groove. Both the inner and outer sliding grooves are symmetrically provided with inclined grooves. The bearing also includes a limiting frame and a limiting cover riveted together to limit a plurality of rollers. Both the limiting frame and the limiting cover have oil guide holes. The first end of the oil guide hole faces the end of the roller, and the second end of the oil guide hole faces the inclined groove.

[0007] Preferably, the limiting frame has circumferentially arranged slots for placing rollers, and the limiting cover is coaxially riveted to the limiting frame to block the slots.

[0008] Preferably, a dust cover is also included, which is fixedly connected to the limiting frame and the limiting cover respectively to cover the two sides of the inner slide groove and the outer slide groove.

[0009] Preferably, the dust cover has circumferentially arranged limiting holes, and the dust cover is fixedly connected to the limiting frame and the limiting cover respectively so that the two ends of the rivet are embedded in the limiting holes.

[0010] Preferably, the dust cover is provided with a circumferential array of mating posts, and the limiting frame and the limiting cover are provided with a circumferential array of mating holes, and the mating posts are inserted into the mating holes.

[0011] Preferably, the mating post is provided with an extension portion, the extension portion is provided with a through hole, a filter plate is provided in the through hole, and the mating post is inserted into the mating hole so that the through hole extends into the oil guide hole and is coaxial with the oil guide hole.

[0012] Preferably, the dust cover has a circumferential array of capillary oil holes that connect to the through hole.

[0013] Preferably, the limiting frame is made of brass.

[0014] Preferably, the limiting cover is made of brass.

[0015] Preferably, the dust cover is made of low-carbon steel.

[0016] In the above technical solution, the cylindrical roller bearing provided by this utility model has the following beneficial effects: by utilizing the presence of the oil guide hole, the roller rolls and slides so that the lubricating oil gradually flows into the gap between the end face of the roller and the retainer, and the gap between the end face of the roller and the retainer cover under the rotational force and capillary action. Subsequently, the lubricating oil accumulated here can flow out again along the oil guide hole to the inclined groove 9 and adhere again to the annular circumferential side of the roller, thereby achieving stable lubrication of the roller and avoiding insufficient lubrication between the roller and the outer and inner rings caused by the accumulation of lubricating oil in the gap between the end of the roller and the cage, thus improving the protection of the roller. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall pipe structure provided in an embodiment of the present utility model;

[0020] Figure 3An exploded view of the overall structure provided for an embodiment of this utility model;

[0021] Figure 4 An exploded structural diagram of the roller, limiting frame, limiting cover, and dust cover provided in the embodiments of this utility model;

[0022] Figure 5 A partial structural enlarged schematic diagram of the dust cover provided in this embodiment of the utility model;

[0023] Figure 6 Provided for the embodiments of this utility model Figure 2 A magnified view of a portion of point A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Outer ring; 11. Inner groove; 2. Inner ring; 21. Outer groove; 3. Roller; 41. Limiting bracket; 411. Placement groove; 42. Limiting cover; 5. Rivet; 6. Dust cover; 61. Limiting hole; 62. Mating post; 63. Extension part; 64. Through hole; 65. Capillary oil hole; 7. Filter plate; 81. Rivet hole; 82. Oil guide hole; 83. Mating hole; 9. Inclined groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0027] like Figure 1-6 As shown, a cylindrical roller bearing includes rivets 5 and rollers 3, and also includes an outer ring 1 and an inner ring 2 arranged coaxially. The outer ring 1 has an inner groove 11, and the inner ring 2 has an outer groove 21. Both the inner groove 11 and the outer groove 21 are symmetrically provided with inclined grooves 9. It also includes a limiting frame 41 and a limiting cover 42 riveted by rivets 5 to limit a plurality of rollers 3. Both the limiting frame 41 and the limiting cover 42 have oil guide holes 82. The first end of the oil guide hole 82 faces the end of the roller 3, and the second end of the oil guide hole 82 faces the inclined groove 9.

[0028] Specifically, such as Figure 4As shown, rivet holes 81 are provided on both the limiting frame 41 and the limiting cover 42. The limiting frame 41 and the limiting cover 42 can be riveted together by rivets 5 and rivet holes 81 to form a complete retainer, thereby limiting the movement of several rollers 3. The rollers 3 are rolled between the outer ring 1 and the inner ring 2 for rolling guidance. When the outer ring 1 rotates relative to the inner ring 2, the rollers 3 roll and guide the lubricating oil to gradually flow into the gap between the end face of the roller 3 and the limiting frame 41, and the gap between the end face of the roller 3 and the limiting cover 42 under the rotational force and capillary action. Subsequently, the lubricating oil accumulated here can flow out again to the inclined groove 9 along the oil guide hole 82 and adhere again to the annular circumferential side of the roller 3, thereby achieving stable lubrication of the rollers 3 and avoiding insufficient lubrication between the rollers 3 and the outer ring 1 and the inner ring 2 caused by the accumulation of lubricating oil in the gap between the end of the roller 3 and the retainer, thus improving the protection of the rollers 3.

[0029] In the above technical solution, the presence of the oil guide hole 82 allows the roller 3 to roll and slide, so that the lubricating oil gradually flows into the gap between the end face of the roller 3 and the limit frame 41, and the gap between the end face of the roller 3 and the limit cover 42 under the rotational force and capillary action. Subsequently, the lubricating oil accumulated here can flow out again to the inclined groove 9 along the oil guide hole 82 and adhere to the annular circumferential side of the roller 3 again, thereby achieving stable lubrication of the roller 3 and avoiding insufficient lubrication between the roller 3 and the outer ring 1 and inner ring 2 caused by the accumulation of lubricating oil in the gap between the end of the roller 3 and the cage, thus improving the protection of the roller 3.

[0030] As a further embodiment of this utility model, a placement groove 411 for placing the roller 3 is formed in a circumferential array on the limiting frame 41, and the limiting cover 42 is coaxially riveted to the limiting frame 41 to block the placement groove 411.

[0031] Specifically, such as Figure 4 As shown, when the limiting frame 41 and the limiting cover 42 are riveted together on the same axis, several rollers 3 are confined within the placement groove 411 to improve the limiting stability of the rollers 3.

[0032] As a further embodiment of this utility model, a dust cover 6 is also included, which is fixedly connected to the limiting frame 41 and the limiting cover 42 respectively to cover the two sides of the inner slide groove 11 and the outer slide groove 21.

[0033] Specifically, such as Figure 2 As shown, the dust cover 6 can be fixed to the limiting frame 41 and the limiting cover 42 to cover both sides of the inner slide groove 11 and the outer slide groove 21, so that the dust cover 6 can cover and protect the limiting frame 41, the limiting cover 42 and the roller 3, and further improve the protection of the roller 3.

[0034] As a further embodiment of this utility model, the dust cover 6 has circumferentially arranged limiting holes 61, and the dust cover 6 is fixedly connected to the limiting frame 41 and the limiting cover 42 respectively so that the two ends of the rivet 5 are embedded in the limiting holes 61.

[0035] Specifically, such as Figure 5 As shown, a number of limiting holes 61 are provided on the dust cover 6. When the dust cover 6 is installed on the limiting frame 41 and the limiting cover 42, the two ends of the rivet 5 are embedded in the limiting holes 61 of the dust cover 6. The dust cover 6 is then used to further limit and protect the rivet 5, thereby improving the relative connection stability of the limiting frame 41 and the limiting cover 42.

[0036] As a further embodiment of this utility model, the dust cover 6 is provided with a circumferential array of mating posts 62, and the limiting frame 41 and the limiting cover 42 are both provided with a circumferential array of mating holes 83, and the mating posts 62 are inserted into the mating holes 83.

[0037] Specifically, such as Figure 6 As shown, the mating post 62 of the dust cover 6 can be inserted and fixed into the mating hole 83 opened on the limiting frame 41 and the limiting cover 42, thereby further improving the fixing stability of the dust cover 6 on the limiting frame 41 and the limiting cover 42 and improving the service life of the bearing.

[0038] As a further embodiment of this utility model, the mating post 62 is provided with an extension portion 63, the extension portion 63 is provided with a through hole 64, a filter plate 7 is provided in the through hole 64, and the mating post 62 is inserted into the mating hole 83 so that the through hole 64 extends into the oil guide hole 82 and is coaxial with the oil guide hole 82.

[0039] Specifically, such as Figure 6 As shown, when the mating post 62 of the dust cover 6 is inserted into the mating hole 83 of the limit bracket 41 and the limit cover 42, the through hole 64 is located inside the oil guide hole 82 so that the filter plate 7 is coaxial with the oil guide hole 82. Therefore, when the lubricating oil in the gap between the end face of the roller 3 and the cage flows through the oil guide hole 82, the lubricating oil will pass through the filter plate 7 to filter out fine debris, so that the fine debris in the lubricating oil is retained in the through hole 64, thereby cleaning and self-cleaning the lubricating oil inside the bearing and avoiding the problem of rapid wear of the roller 3 caused by the fine debris in the lubricating oil. Secondly, when the dust cover 6 is removed, the fine debris filtered out of the lubricating oil is carried out in the through hole 64, and then the fine debris can be cleaned and removed.

[0040] As a further embodiment of this utility model, the dust cover 6 has a circumferential array of capillary oil holes 65 that communicate with the through hole 64.

[0041] Specifically, such as Figure 6As shown, the capillary oil hole 65 is connected to the through hole 64, so that lubricating oil can be injected into the bearing through the capillary oil hole 65 by pressure injection, which is convenient for practical use.

[0042] As a further embodiment provided in this utility model, the limiting bracket 41 is made of brass.

[0043] As a further embodiment provided in this utility model, the limiting cover 42 is made of brass.

[0044] As a further embodiment provided in this utility model, the dust cover 6 is made of low-carbon steel.

[0045] Specifically, the dust cover 6 is made of low-carbon steel to improve its compressive strength and extend its service life.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cylindrical roller bearing, comprising rivets (5) and rollers (3), characterized in that, It also includes an outer ring (1) and an inner ring (2) arranged coaxially. The outer ring (1) has an inner groove (11) and the inner ring (2) has an outer groove (21). The inner groove (11) and the outer groove (21) are symmetrically provided with inclined grooves (9). It also includes a limiting frame (41) and a limiting cover (42) that are riveted together by rivets (5) to limit a number of rollers (3). The limiting frame (41) and the limiting cover (42) are both provided with oil guide holes (82). The first end of the oil guide hole (82) faces the end of the roller (3) and the second end of the oil guide hole (82) faces the inclined groove (9).

2. The cylindrical roller bearing according to claim 1, characterized in that, The limiting frame (41) has a circular array of slots (411) for placing rollers (3), and the limiting cover (42) is coaxially riveted to the limiting frame (41) to block the slots (411).

3. The cylindrical roller bearing according to claim 1, characterized in that, It also includes a dust cover (6), which is fixedly connected to the limit frame (41) and the limit cover (42) respectively to cover the sides of the inner slide groove (11) and the outer slide groove (21).

4. The cylindrical roller bearing according to claim 3, characterized in that, The dust cover (6) has circumferentially arranged limiting holes (61), and the dust cover (6) is fixedly connected to the limiting frame (41) and the limiting cover (42) respectively so that the two ends of the rivet (5) are embedded in the limiting holes (61).

5. The cylindrical roller bearing according to claim 4, characterized in that, The dust cover (6) is provided with a circumferential array of mating posts (62), and the limiting frame (41) and the limiting cover (42) are provided with a circumferential array of mating holes (83), and the mating posts (62) are inserted into the mating holes (83).

6. The cylindrical roller bearing according to claim 5, characterized in that, The mating column (62) is provided with an extension part (63), and the extension part (63) is provided with a through hole (64). A filter plate (7) is provided in the through hole (64). The mating column (62) is inserted into the mating hole (83) so that the through hole (64) extends into the oil guide hole (82) and is coaxial with the oil guide hole (82).

7. The cylindrical roller bearing according to claim 6, characterized in that, The dust cover (6) has a circumferential array of capillary oil holes (65) that connect to the through hole (64).

8. The cylindrical roller bearing according to claim 1, characterized in that, The limiting frame (41) is made of brass.

9. The cylindrical roller bearing according to claim 1, characterized in that, The limiting cover (42) is made of brass.

10. The cylindrical roller bearing according to claim 4, characterized in that, The dust cover (6) is made of low-carbon steel.

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