Double-row full complement cylindrical roller bearing

Abstract

The utility model provides a kind of double-row full cylindrical roller bearing, including inner ring, outer ring and roller being arranged between the rolling, the one side of the inner ring is equipped with the fixed baffle ring integrally formed with it, the other side of the inner ring is equipped with inner baffle ring with interference fit, the thickness of the inner baffle ring is greater than the thickness of the fixed baffle ring. By setting integrally formed fixed baffle ring on one side of inner ring, the other side is interference fit with inner baffle ring, so that inner ring and two side baffle ring form a whole, so that the axial play of inner ring is reduced, effectively reduce the axial movement of inner ring relative to outer ring, so as to reduce the relative movement of roller and inner ring and the impact on outer ring baffle edge;In the case where fixed baffle ring and inner ring are integrally formed, increase the thickness of inner baffle ring, and make inner baffle ring and inner ring interference fit, which can significantly enhance the ability of bearing to withstand axial load.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a double-row full complement cylindrical roller bearing. Background Technology

[0002] Existing double-row full complement cylindrical roller bearings have a symmetrical design with movable inner retaining rings at both ends. The inner ring is positioned between the two inner retaining rings and is movable. This design makes it easy for the inner ring to move axially relative to the outer ring, causing abnormal movement or displacement in the axial direction. This results in relative movement between the rollers and the inner ring, causing the rollers to move and impacting the retaining edge of the outer ring significantly. Moreover, the existing bearing design can only withstand a relatively small axial load. Utility Model Content

[0003] The purpose of this invention is to provide a double-row full complement cylindrical roller bearing that improves the axial load bearing capacity and reduces the axial movement of the inner ring and rollers.

[0004] This utility model provides a double-row full complement cylindrical roller bearing, including an inner ring, an outer ring, and rollers rolling between the two. One side of the inner ring is provided with a fixed retaining ring integrally formed therewith, and the other side of the inner ring is fitted with an inner retaining ring with an interference fit. The thickness of the inner retaining ring is greater than the thickness of the fixed retaining ring.

[0005] Furthermore, spring retaining rings are embedded between the fixed retaining ring and the outer ring, and between the inner retaining ring and the outer ring.

[0006] Furthermore, both the fixed retaining ring and the inner retaining ring have snap-fit ​​grooves on the side near the outer ring, and the spring retainer is snapped into the snap-fit ​​grooves.

[0007] Furthermore, an installation step is provided on the edge of the inner retaining ring away from the fixed retaining ring, and the inner retaining ring is interference-fitted and installed at the installation step.

[0008] Furthermore, the inner retaining ring is bonded to the mounting step of the inner retaining ring.

[0009] Furthermore, the maximum thickness of the inner retaining ring is the same as the axial width of the mounting step.

[0010] Furthermore, a diameter-changing step is provided on the inner side of the inner ring near the inner retaining ring.

[0011] Furthermore, the outer ring is made of Gcr15SiMn material, the spring retainer is made of 65Mn material, and the inner retaining ring, roller and inner ring are made of Gcr15 material.

[0012] Furthermore, the outer ring has integrally formed retaining edges on both sides, and the thickness of the two retaining edges corresponds to the thickness of the fixed retaining ring and the inner retaining ring, respectively.

[0013] Furthermore, the double-row full complement cylindrical roller bearing has an asymmetrical structure.

[0014] The technical solution of this utility model is to set an integrally formed fixed retaining ring on one side of the inner ring, and the other side is interference-fitted with the inner retaining ring, so that the inner ring and the two retaining rings on both sides form a whole, thereby reducing the axial clearance of the inner ring and effectively reducing the axial movement of the inner ring relative to the outer ring, thereby reducing the relative movement of the rollers and the inner ring and the impact on the outer ring retaining edge; when the fixed retaining ring and the inner ring are integrally formed, increasing the thickness of the inner retaining ring and making the inner retaining ring interference-fitted with the inner ring can significantly enhance the bearing's ability to withstand axial loads. 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 half-sectional view of the bearing.

[0017] Figure 2 This is a schematic diagram of the spring retainer.

[0018] Explanation of reference numerals in the attached drawings: 1-outer ring, 2-inner ring, 201-mounting step, 202-diameter changing step, 3-roller, 4-spring retaining ring, 5-inner retaining ring, 6-fixed retaining ring. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Example 1

[0023] like Figures 1-2 As shown, this utility model provides a double-row full complement cylindrical roller bearing. The double-row full complement cylindrical roller bearing is designed with an asymmetrical structure, that is, the retaining ring on one side is thin and the retaining ring on the other side is thick. The specific structure includes an inner ring 2, an outer ring 1, and a plurality of double-row rollers 3 arranged in a circumferential array between the two. One side of the inner ring 2 is provided with a fixed retaining ring 6 integrally formed therewith, and the other side of the inner ring 2 is fitted with an inner retaining ring 5 with an interference fit. The thickness of the inner retaining ring 5 is greater than the thickness of the fixed retaining ring 6. The outer ring 1 is provided with integrally formed retaining edges on both sides. The thickness of the two retaining edges corresponds to the thickness of the fixed retaining ring 6 and the inner retaining ring 5, respectively. The integral design of the fixed retaining ring 6 and the inner ring 2, and the interference fit design of the inner retaining ring 5, enable the bearing to withstand axial force well.

[0024] The installation method of the inner retaining ring 5 and the inner ring 2 is as follows: an installation step 201 is provided on the edge of the inner ring 2 away from the fixed retaining ring 6. The inner retaining ring 5 is installed at the installation step 201 with an interference fit. The maximum thickness of the inner retaining ring 5 is the same as the axial width of the installation step 201. The inner retaining ring 5 is bonded to the installation step 201. In order to solve the problem that the inner ring 2 cannot be installed due to the large interference caused by the loose inner retaining ring 5, a diameter-changing step 202 is provided on the inner side of the inner ring 2 near the inner retaining ring 5. The design of the diameter-changing step 202 is to cope with the deformation of the inner ring 2 when installing the inner retaining ring 5, so as to avoid the inner diameter of the inner ring 2 becoming smaller and unable to be assembled on the shaft. At the same time, the interference fit between the inner retaining ring 5 and the inner ring 2 can make the inner ring 2 fit more tightly on the shaft, so that the bearing can withstand the axial force well and improve the dynamic and static loads.

[0025] Spring retaining rings 4 are embedded between the fixed retaining ring 6 and the outer ring 1, and between the inner retaining ring 5 and the outer ring 1. The spring retaining rings 4 are installed as follows: the fixed retaining ring 6 and the inner retaining ring 5 are both provided with a snap-fit ​​groove on the side near the outer ring 1, and the spring retaining rings 4 are snapped into the snap-fit ​​groove.

[0026] In this embodiment, the outer ring 1 is made of Gcr15SiMn material, the spring retainer ring 4 is made of 65Mn material, and the inner retaining ring 55, roller 3 and inner ring 2 are made of Gcr15 material.

[0027] 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-row full complement cylindrical roller bearing, characterized in that, It includes an inner ring, an outer ring, and a roller that is rolled between the two. One side of the inner ring is provided with a fixed retaining ring integrally formed therewith, and the other side of the inner ring is fitted with an inner retaining ring with an interference fit. The thickness of the inner retaining ring is greater than the thickness of the fixed retaining ring.

2. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, Spring retaining rings are embedded between the fixed retaining ring and the outer ring, and between the inner retaining ring and the outer ring.

3. The double-row full complement cylindrical roller bearing according to claim 2, characterized in that, Both the fixed retaining ring and the inner retaining ring have snap-fit ​​grooves on the side near the outer ring, and the spring retainer is snapped into the snap-fit ​​groove.

4. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, An installation step is provided on the edge of the inner retaining ring away from the fixed retaining ring, and the inner retaining ring is installed at the installation step with an interference fit.

5. The double-row full complement cylindrical roller bearing according to claim 4, characterized in that, The inner retaining ring is bonded to the mounting step of the inner retaining ring.

6. The double-row full complement cylindrical roller bearing according to claim 4, characterized in that, The maximum thickness of the inner retaining ring is the same as the axial width of the mounting step.

7. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, The inner ring has a diameter-changing step on its inner side near the inner retaining ring.

8. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, The outer ring is made of Gcr15SiMn material, the spring retainer is made of 65Mn material, and the inner retaining ring, roller and inner ring are made of Gcr15 material.

9. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, The outer ring has integrally formed retaining edges on both sides, and the thickness of the two retaining edges corresponds to the thickness of the fixed retaining ring and the inner retaining ring, respectively.

10. The double-row full complement cylindrical roller bearing according to claim 1, characterized in that, Double-row full complement cylindrical roller bearings have an asymmetrical structure.

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