High speed cylindrical roller bearing double-lock plastic cage

Abstract

The utility model relates to bearing retainer technical field provides high -speed cylindrical roller bearing double lock mouth plastic retainer. It includes frame body, first material groove and second material groove, the frame body is annular, and the frame body is evenly provided with the pocket hole on, and the pocket hole is shaped between the inboard wall and the outboard wall in the frame body, the first material groove is integrally formed on the inboard wall of frame body, and the first material groove is close to the pocket hole and is located on the lock mouth of inboard wall of frame body, the second material groove is integrally formed on the outboard wall of frame body, and the second material groove is close to the pocket hole and is located on the lock mouth of outboard wall of frame body, the wall thickness of pocket hole lock mouth is reduced in first material groove and second material groove, and the thin wall is formed at pocket hole lock mouth. This high -speed cylindrical roller bearing double lock mouth plastic retainer can realize from inside and outside two sides and push into the rotor, and increase the applicability of retainer.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, and in particular to a double-locking plastic cage for high-speed cylindrical roller bearings. Background Technology

[0002] Cylindrical roller bearings are fitted with cages to control the position of the cylindrical rollers. Based on the position of the retaining flanges, cylindrical roller bearings can be simply divided into N-type and NU-type. In N-type cylindrical roller bearings, the retaining flanges are located on the inner ring, and the rollers are pushed in from the outside to the inside during assembly. In NU-type cylindrical roller bearings, the retaining flanges are located on the outer ring, and the rollers are pushed in from the inside to the outside during assembly.

[0003] In the existing technology, the pockets on the cage can only be used to insert rollers from one side. When the rollers are fixed in the same position, different versions of cages need to be designed to accommodate different models of cylindrical roller bearings, resulting in poor cage applicability. Utility Model Content

[0004] The purpose of this invention is to provide a double-locking plastic cage for high-speed cylindrical roller bearings. This double-locking plastic cage for high-speed cylindrical roller bearings can allow the rotor to be pushed in from both the inner and outer sides, increasing the applicability of the cage.

[0005] This utility model provides a double-locking plastic cage for high-speed cylindrical roller bearings, comprising:

[0006] The frame is annular and has pockets evenly distributed on it, the pockets being formed between the inner and outer walls of the frame.

[0007] The first material discharge groove is integrally formed on the inner side wall of the frame, and the first material discharge groove is located near the lock opening on the inner side wall of the frame near the pocket.

[0008] The second material discharge groove is integrally formed on the outer side wall of the frame, and the second material discharge groove is close to the lock opening on the outer side wall of the frame near the pocket hole;

[0009] Both the first and second material discharge channels reduce the wall thickness at the pocket opening, forming a thin wall at the pocket opening.

[0010] Preferably, the pockets are located on the inner and outer sides of the frame with the same locking size.

[0011] Preferably, the depth of the second discharge trough is greater than the depth of the first discharge trough.

[0012] Preferably, each pocket is provided with a first material discharge groove on the left and right sides of the inner sidewall of the frame, and adjacent pockets share one first material discharge groove.

[0013] Preferably, each pocket is provided with a second material discharge groove on both the left and right sides of the outer side wall of the frame, and each pocket corresponds to two second material discharge grooves.

[0014] Preferably, the cylindrical rollers are fitted into the pockets on the frame, with the cylindrical rollers protruding from the two locking points of the pockets and respectively abutting against the inner and outer rings.

[0015] Preferably, the inner ring is provided with a first retaining edge, and the cylindrical roller bearing is of type N.

[0016] Preferably, the outer ring is provided with a second retaining edge, and the cylindrical roller bearing is of type NU.

[0017] Preferably, the width of the frame is smaller than the width of the outer ring.

[0018] Preferably, the outer diameter of the frame is smaller than the inner diameter of the outer ring, and the inner diameter of the frame is larger than the outer diameter of the inner ring.

[0019] The technical solution of this utility model reduces the wall thickness at the locking opening on both sides of the pocket hole by opening the first and second material removal grooves, so that the locking opening of the pocket hole forms a thin wall, increases the deformation capacity of the edge of the locking opening, and allows the roller to pass smoothly through while ensuring that the roller will not fall off through elastic deformation. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a cross-sectional view of the double-locking plastic cage for the high-speed cylindrical roller bearing of this utility model;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the double-locking plastic cage of a medium-to-high speed cylindrical roller bearing;

[0023] Figure 3 for Figure 1 Axonometric drawing of a double-locking plastic cage for a medium-to-high speed cylindrical roller bearing;

[0024] Figure 4 for Figure 1 Assembly diagram of a medium-to-high speed cylindrical roller bearing with a double-locking plastic cage on an N-type cylindrical roller bearing;

[0025] Figure 5 for Figure 1 Assembly diagram of a medium-to-high speed cylindrical roller bearing with a double-locking plastic cage on a NU type cylindrical roller bearing.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Frame; 11. Straight beam; 12. Circular plate; 2. Pocket; 21. Thin wall; 3. First discharge chute; 4. First discharge chute; 5. Inner ring; 51. First side guard; 6. Outer ring; 61. Second side guard. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] In the description of this utility model, it should be understood that 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. Therefore, 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; 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.

[0031] Combination Figures 1 to 5 As shown, the high-speed cylindrical roller bearing double-lock plastic cage provided by this utility model includes a frame body 1, a pocket 2, a first discharge groove 3, and a second discharge groove 4.

[0032] Combination Figures 1 to 5 As shown, the frame 1 is formed by two parallel annular plates 12 fixedly connected by multiple straight beams 11 arranged in a ring. The frame 1 is generally annular, and the interval between adjacent straight beams 11 is called a pocket 2. The pockets 2 are evenly distributed on the frame 1 and are used to accommodate cylindrical rollers. When the frame 1 is regarded as a whole, the pocket 2 is approximately the shape of a groove integrally formed through the inner and outer sides of the frame 1; the inner wall of the pocket 2 is an arc surface, and its shape is similar to the outer surface of the cylindrical roller, but the two are not tightly fitted together.

[0033] The first material removal groove 3 is integrally formed on the inner wall of the frame 1, and the first material removal groove 3 is close to the lock opening of the pocket 2 on the inner wall of the frame 1. The first material removal groove 3 reduces the wall thickness of the pocket 2 at the lock opening on the inner wall and forms a thin wall 21.

[0034] Each pocket 2 is provided with a first material discharge groove 3 on the left and right sides of the inner side wall of the frame 1. Adjacent pockets 2 share a first material discharge groove 3 to save space so as to accommodate more cylindrical rollers.

[0035] The second material removal groove 4 is integrally formed on the outer side wall of the frame 1, and the second material removal groove 4 is close to the lock opening of the pocket 2 on the outer side wall of the frame 1. The second material removal groove 4 reduces the wall thickness of the pocket 2 at the lock opening on the outer side of the outer wall and forms a thin wall 21.

[0036] Each pocket 2 is provided with a second material discharge groove 4 on both the left and right sides of the outer wall of the frame 1. Each pocket 2 corresponds to two second material discharge grooves 4. The outer wall has a larger size and sufficient space to accommodate more second material discharge grooves 4. Designing more second material discharge grooves 4 reduces the amount of material discharged and ensures structural strength.

[0037] The locking openings of the pocket 2 on the inner and outer sides of the frame 1 are the same size, reducing the difference in the cylindrical rollers being pushed in from the inner and outer sides; since the included angle between the inner and outer walls and the inner wall of the pocket 2 is different, the depth of the second material discharge groove 4 is set to be greater than the depth of the first material discharge groove 3 to balance the fixing effect of the two locking openings.

[0038] In this embodiment, by opening the first material removal groove 3 and the second material removal groove 4, the wall thickness at the locking opening on both sides of the pocket hole 2 is reduced, so that a thin wall 21 is formed at the locking opening of the pocket hole 2, which increases the deformation capacity of the edge at the locking opening. Through elastic deformation, it can ensure that the roller does not fall off while allowing the roller to pass smoothly.

[0039] Working process: The cylindrical rollers are assembled in the pockets 2 on the frame 1. The cylindrical rollers protrude from the two locking holes of the pockets 2 and abut against the inner ring 5 and the outer ring 6 respectively. The width of the frame 1 is smaller than the width of the outer ring 6, the outer diameter of the frame 1 is smaller than the inner diameter of the outer ring 6, and the inner diameter of the frame 1 is larger than the outer diameter of the inner ring 5, so as to avoid the problem of the frame 1 being bumped.

[0040] When the cylindrical roller bearing is of type N, that is, the inner ring 5 is provided with a first retaining edge 51; first, the frame 1 is fitted on the outside of the inner ring 5, then the cylindrical rollers are all installed into the pocket 2 from the outside to the inside, and finally the outer ring 6 is assembled.

[0041] When the cylindrical roller bearing is of type NU, that is, the outer ring 6 is provided with a second retaining edge 61; first, the frame 1 is installed inside the outer ring 6, then the cylindrical rollers are installed into the pocket 2 from the inside to the outside, and finally the inner ring 5 is assembled.

[0042] 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 double-locking plastic cage for high-speed cylindrical roller bearings, characterized in that, include: The frame (1) is annular and has pockets (2) evenly distributed on it. The pockets (2) are formed between the inner and outer walls of the frame (1). The first material discharge groove (3) is integrally formed on the inner side wall of the frame (1), and the first material discharge groove (3) is located near the pocket (2) on the lock hole on the inner side wall of the frame (1). The second material discharge groove (4) is integrally formed on the outer side wall of the frame (1), and the second material discharge groove (4) is located near the pocket (2) on the lock hole on the outer side wall of the frame (1); Both the first material discharge groove (3) and the second material discharge groove (4) reduce the wall thickness at the locking opening of the pocket (2), forming a thin wall (21) at the locking opening of the pocket (2).

2. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 1, characterized in that, The pocket (2) has the same size lock opening on both the inner and outer sides of the frame (1).

3. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 2, characterized in that, The depth dimension of the second material discharge groove (4) is greater than the depth dimension of the first material discharge groove (3).

4. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 1, characterized in that, Each of the pockets (2) is provided with a first material discharge groove (3) on the left and right sides of the inner sidewall of the frame (1), and adjacent pockets (2) share one first material discharge groove (3).

5. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 1, characterized in that, Each of the pockets (2) is provided with a second material discharge groove (4) on the left and right sides of the outer side wall of the frame (1), and each pocket (2) corresponds to two second material discharge grooves (4).

6. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 1, characterized in that, The cylindrical rollers are fitted into the pockets (2) on the frame (1), and the cylindrical rollers protrude from the two locking holes of the pockets (2) and abut against the inner ring (5) and the outer ring (6) respectively.

7. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 6, characterized in that, The inner ring (5) is provided with a first retaining edge (51), and the cylindrical roller bearing is of type N.

8. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 6, characterized in that, The outer ring (6) is provided with a second retaining edge (61), and the cylindrical roller bearing is of type NU.

9. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 6, characterized in that, The width of the frame (1) is smaller than the width of the outer ring (6).

10. The high-speed cylindrical roller bearing double-locking plastic cage according to claim 6, characterized in that, The outer diameter of the frame (1) is smaller than the inner diameter of the outer ring (6), and the inner diameter of the frame (1) is larger than the outer diameter of the inner ring (5).

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