Solid lubricant retainer cylindrical roller bearing

Abstract

The utility model discloses a solid lubricant retainer cylindrical roller bearing, including outer ring, inner race, left end cover and right end cover and a plurality of rollers, a plurality of rollers fill between the inner race outer wall and the inner wall of outer ring, left end cover and right end cover are installed on the both ends of inner race and outer ring respectively, and the retainer is set up on a plurality of rollers, and the retainer is made of solid lubricant. The utility model discloses the retainer of solid lubricant preparation, can provide lubrication in the process of bearing operation continuously, reduce the friction and wear between the roller and the inner and outer ring, improve the service life and reliability of bearing, need not additional lubricant simultaneously, has simplified the maintenance process, is applicable to high temperature, high speed and other severe working conditions.

Description

Technical Field

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

[0002] In the textile machinery industry, with increasingly stringent quality requirements for components such as cams and sheaths on various looms, the demand for high-end bearings is growing. Due to space constraints, thin bearings are needed, while still meeting certain load requirements. If conventional designs with cages are used, this limits the length and number of rollers, resulting in insufficient load capacity. Using full-roller designs requires flanges on the inner or outer rings, which similarly limits the roller length and also results in insufficient load capacity. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a cylindrical roller bearing with a solid lubricant cage. By using a solid lubricant to make the cage, the number and length of rollers are guaranteed without increasing the bearing thickness, thereby improving the bearing's load capacity.

[0004] To achieve the above objectives, the present invention provides the following technical solution: comprising an outer ring, an inner ring, a left end cap, a right end cap, and a plurality of rollers, wherein the plurality of rollers are filled between the outer wall of the inner ring and the inner wall of the outer ring, the left end cap and the right end cap are respectively installed on the two ends of the inner ring and the outer ring, and a retainer is sleeved on the plurality of rollers, wherein the retainer is made of solid lubricant.

[0005] As a further improvement of this utility model, the retainer is in the shape of a ring, and the retainer has the same number of cylindrical pockets as the rollers. Each of the cylindrical pockets has a strip-shaped notch extending along the length of the cylindrical pocket in the four directions of up, down, left, and right.

[0006] As a further improvement of this utility model, three circumferentially distributed mounting holes are provided on the end face of the inner ring, and three circumferentially distributed mounting posts are fixed on the end faces of the left and right end caps near the center of the circle. The mounting posts are embedded in the mounting holes so that the left and right end caps are respectively installed on the two ends of the inner and outer rings.

[0007] As a further improvement of this utility model, a closing ring is provided on the end face of the left end cover and the right end cover near the periphery of the circle. The cross-section of the outer ring is T-shaped, and the closing ring is embedded in the left and right ends of the T-shaped structure.

[0008] The beneficial effects of this invention are that the cage made of solid lubricant can directly contact the rollers to achieve lubrication without the need for an additional lubrication device. This solves the problem of traditional cages occupying space and thus limiting the number and length of rollers, significantly improving the bearing load capacity within a limited space. The cylindrical pocket design of the annular cage stabilizes the roller position, the strip-shaped notch structure stores and guides lubrication, the fit between the mounting hole and the mounting post enables quick positioning and installation of the end cap, and the combination of the T-shaped outer ring and the closing ring enhances the bearing's sealing performance. Attached Figure Description

[0009] Figure 1 This is an overall structural diagram of the solid lubricant cage cylindrical roller bearing of this utility model; Figure 2 This is a cross-sectional schematic diagram of the solid lubricant cage cylindrical roller bearing of this utility model; Figure 3 for Figure 2 A schematic diagram of the cross-section of the cage formed in the process. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0011] Reference Figure 1 and Figure 2 As shown, the solid lubricant cage cylindrical roller bearing of this embodiment includes an outer ring 1, an inner ring 2, a left end cap 4, a right end cap 5, and a plurality of rollers 3. The plurality of rollers 3 fill the space between the outer wall of the inner ring 2 and the inner wall of the outer ring 1. The left end cap 4 and the right end cap 5 are respectively installed on the two ends of the inner ring 2 and the outer ring 1. A cage 6, made of solid lubricant, is fitted onto the plurality of rollers 3. In space-constrained areas such as cams and openings in textile machinery, this bearing forms a self-lubricating system through direct contact between the solid lubricant cage 6 and the rollers 3, eliminating the space required for traditional lubrication circuits. This allows for the arrangement of more and longer rollers 3 with the same bearing thickness, solving the problem of insufficient load capacity caused by the space occupied by the cage in conventional designs.

[0012] Furthermore, refer to Figure 3 As shown, the retainer 6 is annular in shape and has the same number of cylindrical pockets 61 as the rollers 3. Each cylindrical pocket 61 has a strip-shaped notch extending along its length in all four directions (up, down, left, and right). The clearance fit between the cylindrical pockets 61 and the rollers 3 ensures rolling flexibility while storing solid lubricant through the strip-shaped notches, forming a continuous lubricating film as the rollers 3 rotate. This structural design provides superior lubrication durability compared to traditional solid pockets.

[0013] Furthermore, refer to Figure 1As shown, three circumferentially distributed mounting holes 21 are provided on the end face of the inner ring 2. Three circumferentially distributed mounting posts 41 are fixed on the end faces of the left end cover 4 and the right end cover 5 near the center. The mounting posts 41 are embedded in the mounting holes 21 to install the left end cover 4 and the right end cover 5 on the two ends of the inner ring 2 and the outer ring 1, respectively. The three-point positioning mounting structure reduces the number of parts and shortens the assembly time compared with the traditional bolt connection, while avoiding the radial space occupied by the protruding bolt head.

[0014] Furthermore, refer to Figure 2 As shown, a sealing ring 52 is provided on the end face of the left end cap 4 and the right end cap 5 near the periphery of the circle. The outer ring 1 has a T-shaped cross-section, and the sealing ring 52 is embedded in the left and right ends of the T-shaped structure. The combination of the T-shaped structure and the sealing ring 52 forms a labyrinth seal, which improves the dustproof and waterproof capabilities compared to the ordinary flat end cap structure. At the same time, the sealing ring 52 is made of elastic material, which can compensate for the gap problem caused by assembly errors.

[0015] This embodiment provides an assembly method. During assembly, rollers 3 are placed in a specially made fixture, and liquid lubricant is injected into it. A special reagent is added, and the fixture is rotated. The liquid lubricant will slowly solidify, forming a solidified lubricant between the end face of the roller 3 and the rolling surface. The thickness of the end face can be as thin as about 0.2 mm. Since it is a full roller 3, the gap between the rollers 3 is almost zero. The thinnest part between every two rollers 3 is 0 mm. There is a certain gap between the roller 3 and the solidified cage. There is a gap δ1 between the outer diameter of the cage and the outer raceway, and there is also a gap δ2 between the inner diameter of the cage and the inner raceway. This can ensure that the roller 3 and the lubricated cage assembly can operate normally in the raceway.

[0016] In summary, this utility model, through its innovative design of a solid lubricant retainer, effectively solves the technical problem of insufficient bearing load capacity in space-constrained applications such as textile machinery, without increasing the overall thickness of the bearing. It also possesses the combined advantages of self-lubrication, easy assembly, and high sealing performance. The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A solid lubricant cage cylindrical roller bearing, comprising an outer ring (1), an inner ring (2), a left end cap (4), a right end cap (5), and a plurality of rollers (3), wherein the plurality of rollers (3) are filled between the outer wall of the inner ring (2) and the inner wall of the outer ring (1), and the left end cap (4) and the right end cap (5) are respectively mounted on the two ends of the inner ring (2) and the outer ring (1), characterized in that: A retainer (6) is fitted onto several of the rollers (3), and the retainer (6) is made of solid lubricant.

2. The solid lubricant cage cylindrical roller bearing according to claim 1, characterized in that: The retainer (6) is annular and has the same number of cylindrical pockets (61) as the rollers (3). The cylindrical pockets (61) have strip-shaped notches extending along the length of the cylindrical pockets (61) in the four directions of up, down, left, and right.

3. The solid lubricant cage cylindrical roller bearing according to claim 2, characterized in that: The inner ring (2) has three circumferentially distributed mounting holes (21) on its end face. The left end cover (4) and the right end cover (5) have three circumferentially distributed mounting posts (41) fixed on their end faces near the center. The mounting posts (41) are embedded in the mounting holes (21) to install the left end cover (4) and the right end cover (5) on the two ends of the inner ring (2) and the outer ring (1), respectively.

4. The solid lubricant cage cylindrical roller bearing according to claim 3, characterized in that: The left end cap (4) and the right end cap (5) are provided with a closing ring (52) near the periphery of the circle. The cross-section of the outer ring (1) is T-shaped, and the closing ring (52) is embedded in the left and right ends of the T-shaped structure.

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