Cylindrical roller bearing retainer

Abstract

The utility model provides a cylindrical roller bearing retainer. The cylindrical roller bearing retainer comprises an oil groove structure, an oil line structure, a retainer seat and a retainer cover, a plurality of oil groove structures are arranged on an end cover of the retainer cover; the retainer seat and the retainer cover are assembled to form a plurality of pockets; the oil groove structures are located on the two sides of the pocket end face. Two side walls in the circumferential direction of each pocket hole are cylindrical surfaces; and an oil line structure is arranged on a retainer beam of the retainer seat. The utility model provides a cylindrical roller bearing retainer and a cylindrical roller bearing thereof, which not only can meet the heavy load requirement of the bearing, but also can fully improve the running speed of the bearing.

Description

Technical Field

[0001] The utility model relates to a low-friction, lightweight cylindrical roller bearing, in particular to a cylindrical roller bearing retaining frame. Background Art

[0002] Cylindrical roller bearings are widely used in various industrial fields such as electric motors, rolling mills, internal combustion engines, and machine tool spindles because of their strong radial load capacity and ability to withstand heavy loads and impact loads. With the upgrading of the industry, higher requirements are placed on the operating speed of cylindrical bearings. In working conditions that are subject to certain heavy loads and impact loads, cylindrical roller bearings mostly use copper machined cages. Traditional cages have the advantages of good strength and wear resistance, but they are heavy in weight and have high friction resistance, which has certain limitations on increasing the bearing speed. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a cylindrical roller bearing cage and a cylindrical roller bearing thereof, which are new cages that can not only meet the heavy-load requirements of the bearings, but also fully improve the operating speed of the bearings.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a cylindrical roller bearing cage, including an oil groove structure, an oil line structure, a cage seat and a cage cover; a plurality of oil groove structures are arranged on the end cover of the cage cover; the cage seat and the cage cover are assembled to form a plurality of pockets; the oil groove structure is located on both sides of the end faces of the pockets; the two circumferential side walls of the pockets are cylindrical surfaces; an oil line structure is arranged on the cage beam of the cage seat.

[0005] Furthermore, the oil groove structure is arranged on the outer peripheral surfaces of the cage seat and the cage cover.

[0006] Furthermore, another oil groove structure is arranged on the inner circumferential surface of the cage seat and the cage cover.

[0007] Furthermore, the oil groove structure includes an axial oil groove one and an axial oil groove two; the axial oil groove one and the axial oil groove two are the same; the axial oil groove one is arranged on the end cover of the retaining frame seat; the axial oil groove two is arranged on the end cover of the retaining frame cover; the axial oil groove one and the axial oil groove two are arranged on the same horizontal line.

[0008] Furthermore, the oil line structure is arranged on the outer diameter surface of the retaining frame beam.

[0009] Furthermore, another oil line structure is arranged on the inner diameter surface of the retaining frame beam.

[0010] Furthermore, the oil line structure includes one radial oil line groove or two radial oil line grooves.

[0011] Furthermore, it also includes a weight-reducing groove; the weight-reducing groove is arranged on the retaining frame beam; the oil line structure is a radial oil line groove; a weight-reducing groove is arranged between the radial oil line groove and the end cover of the retaining frame seat; a weight-reducing groove is arranged between the radial oil line groove and the end cover of the retaining frame cover.

[0012] Furthermore, it also includes a weight-reducing groove; the weight-reducing groove is arranged on the retaining frame beam; the oil line structure is two radial oil line grooves; a weight-reducing groove is arranged between the two radial oil line grooves; a weight-reducing groove is arranged between one radial oil line groove and the end cover of the retaining frame seat; a weight-reducing groove is arranged between the other radial oil line groove and the end cover of the retaining frame cover.

[0013] A cylindrical roller bearing comprises a bearing outer ring, a bearing inner ring, rolling elements and a cylindrical roller bearing retainer; the bearing inner ring is arranged inside the bearing outer ring; the cylindrical roller bearing retainer is arranged between the bearing inner ring and the bearing outer ring; a plurality of rolling elements are evenly mounted in the pockets of the cylindrical roller bearing retainer; the outer circle of one side of the rolling element is mounted in the raceway of the bearing outer ring; the other side of the rolling element is mounted in the raceway of the bearing inner ring; a guiding gap is provided between the cylindrical roller bearing retainer and the rib of the bearing outer ring.

[0014] The utility model provides a low-friction, lightweight cylindrical roller bearing cage, and the use of the cage and the bearing has the following beneficial effects:

[0015] 1. The cage is guided by the outer ring rib, which has a compact structure, stable operation, and can correct the cage's operating posture in real time, which is beneficial to increasing the working speed of the bearing;

[0016] 2. Three weight-reducing grooves are reasonably set on the outer diameter and inner diameter of the cage seat. On the basis of ensuring the normal operation inclusion area of ​​the cage pocket and the rolling element, the contact area between the rolling element and the cage pocket is fully reduced, thereby reducing the friction resistance of the rolling element and the weight of the cage.

[0017] 3. Lubricating oil grooves are arranged on both sides of the outer diameter surface of the cage seat and the cage cover in equal numbers according to the number of pockets, which improves the friction between the two when the outer ring rib guides the cage;

[0018] 4. Multiple oil lines are set on the outer diameter surface of the cage to guide the lubricant into the cage pocket, which is convenient for quickly establishing the lubricating oil film between the friction pairs and improving the overall fluidity of the lubricant inside the bearing cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a cylindrical roller bearing of the utility model;

[0020] Figure 2 This is a schematic structural diagram of a cylindrical roller bearing cage of the utility model;

[0021] Figure 3 It is a cross-sectional view of the cylindrical roller bearing of the utility model;

[0022] Figure 4 This is a cross-sectional view of a cylindrical roller bearing cage of the utility model;

[0023] In the figure: 1. bearing outer ring, 2. bearing inner ring, 3. rolling element, 4. cage cover, 5. cage seat, 6. axial oil groove 1, 7. axial oil groove 2, 8. radial oil line groove, 9. weight reduction groove. DETAILED DESCRIPTION

[0024] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See attached Figure 1-4 As shown, a cylindrical roller bearing cage includes an oil groove structure, an oil line structure, a cage seat 5 and a cage cover; a plurality of oil groove structures are arranged on the end cover of the cage cover; the cage seat 5 and the cage cover are assembled to form a plurality of pockets; the oil groove structure is located on both sides of the end faces of the pockets; the two circumferential side walls of the pockets are cylindrical surfaces; an oil line structure is arranged on the cage beam of the cage seat 5.

[0026] Furthermore, the oil groove structure is arranged on the outer peripheral surfaces of the cage seat 5 and the cage cover 4 .

[0027] Furthermore, another oil groove structure is provided on the inner circumferential surface of the cage seat 5 and the cage cover 4 .

[0028] Furthermore, the oil groove structure includes an axial oil groove 1 6 and an axial oil groove 2 7; the axial oil groove 1 6 and the axial oil groove 2 7 are the same; the axial oil groove 1 6 is arranged on the end cover of the retaining frame seat 5; the axial oil groove 2 7 is arranged on the end cover of the retaining frame cover 4; the axial oil groove 1 6 and the axial oil groove 2 7 are arranged on the same horizontal line.

[0029] It should be noted that the axial oil groove 1 6 and the axial oil groove 2 7 are arranged on the inner and outer peripheral surfaces of the retaining frame, so that the lubricating oil flows into the pocket from the axial direction of the rolling element 3, lubricates the axial direction of the rolling element 3, enhances the lubricity of the axial direction of the rolling element 3 and the retaining frame, and finally improves the operating speed of the cylindrical roller bearing.

[0030] Furthermore, the oil line structure is arranged on the outer diameter surface of the retaining frame beam.

[0031] Furthermore, another oil line structure is arranged on the inner diameter surface of the retaining frame beam.

[0032] Furthermore, the oil line structure includes one radial oil line groove 8 or two radial oil line grooves 8 .

[0033] It should be noted that the radial oil line grooves 8 are arranged on the inner and outer diameter surfaces of the cage beam, so that the lubricating oil flows into the pockets from the radial direction of the rolling element 3, lubricates the rolling element 3 in the radial direction, enhances the radial lubricity of the rolling element 3 and the cage, and ultimately improves the operating speed of the cylindrical roller bearing.

[0034] Furthermore, it also includes a weight-reducing groove 9; the weight-reducing groove 9 is arranged on the retaining frame beam; the oil line structure is a radial oil line groove 8; a weight-reducing groove 9 is arranged between the radial oil line groove 8 and the end cover of the retaining frame seat 5; a weight-reducing groove 9 is arranged between the radial oil line groove 8 and the end cover of the retaining frame cover 4.

[0035] Furthermore, it also includes a weight-reducing groove 9; the weight-reducing groove 9 is arranged on the retaining frame beam; the oil line structure is two radial oil line grooves 8; a weight-reducing groove 9 is arranged between the two radial oil line grooves 8; a weight-reducing groove 9 is arranged between one radial oil line groove 8 and the end cover of the retaining frame seat 5; a weight-reducing groove 9 is arranged between the other radial oil line groove 8 and the end cover of the retaining frame cover 4.

[0036] It should be noted that the setting of the weight-reducing groove reduces the weight of the cage while ensuring its mechanical strength, and improves the heat dissipation capacity of the cage, thus saving processing raw materials.

[0037] A cylindrical roller bearing comprises a bearing outer ring 1, a bearing inner ring 2, rolling elements 3 and a cylindrical roller bearing retainer; the bearing inner ring 2 is arranged in the bearing outer ring 1; the cylindrical roller bearing retainer is arranged between the bearing inner ring 2 and the bearing outer ring 1; a plurality of rolling elements 3 are evenly assembled in the pockets of the cylindrical roller bearing retainer; the outer circle of one side of the rolling element 3 is assembled in the raceway of the bearing outer ring 1; the other side of the rolling element 3 is assembled in the raceway of the bearing inner ring 2; a guiding gap is arranged between the cylindrical roller bearing retainer and the rib of the bearing outer ring 1.

[0038] It should be noted that the axial oil grooves (axial oil groove 1 6 and axial oil groove 2 7) and the radial oil line grooves 8 allow the lubricating oil to circulate between each other, thereby reducing the friction between the outer diameter of the cage and the outer ring rib and enhancing the lubrication effect.

[0039] Since the cylindrical roller bearing adopts a machined copper cage, the axial oil grooves (axial oil groove 1 6 and axial oil groove 2 7) can only be set on both sides of the pocket end face. If they are set on both sides of the upper end face of the cage beam, the material strength here will be weakened, affecting the service life of the cylindrical roller bearing.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A cylindrical roller bearing cage, characterized in that: It includes an oil groove structure, an oil line structure, a retainer seat and a retainer cover; a plurality of oil groove structures are arranged on the end cover of the retainer cover; the retainer seat and the retainer cover are assembled to form a plurality of pockets; the oil groove structure is located on both sides of the end faces of the pockets; the two circumferential side walls of the pockets are cylindrical surfaces; an oil line structure is arranged on the retainer beam of the retainer seat.

2. A cylindrical roller bearing cage according to claim 1, characterized in that: The oil groove structure is arranged on the outer peripheral surfaces of the cage seat and the cage cover.

3. A cylindrical roller bearing cage according to claim 2, characterized in that: The other oil groove structure is arranged on the inner circumferential surface of the cage seat and the cage cover.

4. A cylindrical roller bearing cage according to claim 1, characterized in that: The oil groove structure includes an axial oil groove one and an axial oil groove two; the axial oil groove one and the axial oil groove two are the same; the axial oil groove one is arranged on the end cover of the retaining frame seat; the axial oil groove two is arranged on the end cover of the retaining frame cover; the axial oil groove one and the axial oil groove two are arranged on the same horizontal line.

5. A cylindrical roller bearing cage according to claim 1, characterized in that: The oil line structure is arranged on the outer diameter surface of the retaining frame beam.

6. A cylindrical roller bearing cage according to claim 2, characterized in that: Another oil line structure is arranged on the inner diameter surface of the retaining frame beam.

7. A cylindrical roller bearing cage according to claim 1, characterized in that: The oil line structure includes one radial oil line groove or two radial oil line grooves.

8. A cylindrical roller bearing cage according to claim 7, characterized in that: It also includes a weight-reducing groove; the weight-reducing groove is arranged on the retaining frame beam; the oil line structure is a radial oil line groove; a weight-reducing groove is arranged between the radial oil line groove and the end cover of the retaining frame seat; a weight-reducing groove is arranged between the radial oil line groove and the end cover of the retaining frame cover.

9. A cylindrical roller bearing cage according to claim 7, characterized in that: It also includes a weight-reducing groove; the weight-reducing groove is arranged on the retaining frame beam; the oil line structure is two radial oil line grooves; a weight-reducing groove is arranged between the two radial oil line grooves; a weight-reducing groove is arranged between one radial oil line groove and the end cover of the retaining frame seat; a weight-reducing groove is arranged between the other radial oil line groove and the end cover of the retaining frame cover.

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