Cylindrical roller bearing cage

Abstract

The utility model relates to bearing retainer technical field, especially a cylindrical roller bearing retainer. Including retainer seat and retainer cover, the retainer seat is evenly provided with a plurality of for accommodating cylindrical roller's pocket in the circumferential direction, every pocket's two side walls are equipped with arc notch respectively, and every pocket's two arc notch's bending direction is opposite setting. The utility model discloses the technical scheme of every pocket on the retainer seat is provided with arc notch, makes the cylindrical roller in every pocket can contact with lubricating medium, lubricates fully, evenly, avoids the various damage of the roller and the raceway surface due to the insufficient lubrication, improves the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, and in particular to a cylindrical roller bearing cage. Background Technology

[0002] The cage is one of the core components of a cylindrical roller bearing. Its core function is to evenly separate the cylindrical rollers, preventing direct collision and friction between them, and guiding the rollers to roll stably between the inner and outer raceways, ensuring efficient, low-noise, and long-life operation of the bearing. To ensure lubrication between the rollers and the cage pockets, existing cages typically have lubrication holes in the pockets as channels for lubricating oil to enter. However, existing cages have a limited number of lubrication holes, spaced only between one or two pockets, resulting in insufficient and uneven lubrication, leading to various types of damage to the rollers and raceway surfaces, and significantly reducing the bearing's service life. Therefore, this invention is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a cylindrical roller bearing cage that can solve the problem of damage to the rollers and raceways and shortened bearing life caused by insufficient and uneven lubricating oil entering the pockets of existing cages.

[0004] This utility model provides a cylindrical roller bearing cage, including a cage seat and a cage cover. The cage seat is uniformly provided with a plurality of pockets for accommodating cylindrical rollers along the circumferential direction. Each pocket has an arc notch on its two side walls, and the two arc notches on each pocket are arranged in opposite directions.

[0005] Furthermore, the arc-shaped notches on any two adjacent pocket sidewalls are staggered.

[0006] Furthermore, for any three consecutive pockets, the arc notches on the pockets on both sides are aligned.

[0007] Furthermore, the retainer base is riveted to the retaining cover.

[0008] Furthermore, the retainer base has a plurality of round rivet heads on the side near the retaining cover, and the retainer cover has a plurality of rivet holes through it, with the round rivet heads riveted to the rivet holes.

[0009] Furthermore, the round rivet head is integrally formed with the retainer base.

[0010] Furthermore, the plurality of said round rivet heads are evenly distributed along the circumference of said retainer base.

[0011] Furthermore, the axis of the round rivet head is parallel to the axis of the retainer base.

[0012] Furthermore, the round rivet head has a rounded corner near the root of the retainer seat.

[0013] Furthermore, the end of the rivet hole near the retainer seat is provided with a chamfer that matches the rounded corner.

[0014] In summary, this utility model has the following advantages compared with the prior art: The technical solution of this utility model is to provide an arc notch on each pocket of the cage seat, so that the cylindrical roller in each pocket can come into contact with the lubricating medium, ensuring sufficient and uniform lubrication, avoiding various damages to the roller and raceway surface caused by insufficient lubrication, and improving the service life of the bearing. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a side view of the retaining frame in an embodiment of the present invention; Figure 2 This is a side view of the holder cover in an embodiment of the present invention; Figure 3 This is a partial enlarged view of the connection between the round rivet head and the cage seat in an embodiment of this utility model; Figure 4 This is a partial enlarged view of the rivet holes on the cage cover in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached diagram: 1-Cage base; 101-Pocket; 2-Cage cover; 3-Circular notch; 4-Rivet head; 401-Rounded corner; 5-Rivet hole; 501-Chamfer. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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.

[0021] Example A cylindrical roller bearing cage, such as Figure 1 and Figure 2 As shown, it includes a cage base 1 and a cage cover 2. The cage base 1 is uniformly provided with a plurality of pockets 101 for accommodating cylindrical rollers along the circumference. Each pocket 101 has an arc notch 3 on its two side walls, and the two arc notches 3 of each pocket 101 are aligned.

[0022] The two arc-shaped notches 3 on each pocket 101 are arranged with their bending directions opposite each other, and the arc-shaped notches 3 on the sidewalls of any two adjacent pockets 101 are staggered. Furthermore, for any three consecutive pockets 101, the arc-shaped notches 3 on the pockets 101 on both sides are aligned. The staggered arrangement of the arc-shaped notches 3 on the cage ensures that each pocket 101 has an arc-shaped notch 3, and that the interval between adjacent arc-shaped notches 3 is relatively large. This arrangement ensures that the strength of the cage is not affected while also providing lubrication, resulting in uniform and sufficient lubrication.

[0023] The cage base 1 and the cage cover 2 are riveted together. Multiple round rivets 4 are evenly distributed circumferentially on the side of the cage base 1 near the cage cover 2. Multiple rivet holes 5 corresponding to the round rivets 4 are provided through the cage cover 2. The round rivets 4 are riveted to the rivet holes 5. The round rivets 4 and the cage base 1 are integrally formed, and the axis of the round rivets 4 is parallel to the axis of the cage base 1.

[0024] like Figure 3 As shown, the round rivet head 4 has a rounded corner 401 near the root of the cage base 1; as Figure 4 As shown, the end of the rivet hole 5 near the cage seat 1 is provided with a chamfer 501 that matches the rounded corner 401. This utility model adds a rounded corner 401 to the root of the round rivet head 4 of the cage seat 1 and a chamfer 501 to one end of the rivet hole 5 of the cage cover 2, so that the cage seat 1 and the cage cover 2 are riveted as a whole, thereby improving the overall strength of the cage.

[0025] This invention ensures that lubrication is adequate without affecting the strength of the cage, allowing for sufficient lubrication between the rollers and the raceway surface. The rounded corners at the root of the rivet head of the cage seat and the chamfering of the rivet holes in the cage cover enhance the overall strength of the cage, thereby increasing the service life of the bearing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cylindrical roller bearing cage characterized in that, It includes a cage base (1) and a cage cover (2). The cage base (1) is uniformly provided with a plurality of pockets (101) for accommodating cylindrical rollers along the circumferential direction. Each pocket (101) has two arc notches (3) on its two side walls, and the two arc notches (3) on each pocket (101) are arranged in opposite directions. The arc-shaped notches (3) on the sidewalls of any two adjacent pockets (101) are staggered; For any three consecutive pockets (101), the arc notches (3) on the pockets (101) on both sides are aligned. The cage seat (1) is riveted to the cage cover (2); The retainer base (1) is provided with a plurality of round rivet heads (4) on the side near the retainer cover (2), and the retainer cover (2) is provided with a plurality of rivet holes (5) through it, and the round rivet heads (4) are riveted to the rivet holes (5); The round rivet head (4) has a rounded corner (401) near the root of the retainer base (1); The rivet hole (5) near the end of the retainer base (1) is provided with a chamfer (501) that matches the fillet (401).

2. The cylindrical roller bearing cage of claim 1, wherein, The round rivet head (4) is integrally formed with the retainer base (1).

3. The cylindrical roller bearing cage of claim 1, wherein, The plurality of the round rivet heads (4) are evenly distributed along the circumferential direction of the retainer base (1).

4. The cylindrical roller bearing cage of claim 1, wherein, The axis of the round rivet head (4) is parallel to the axis of the retainer base (1).

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