Double-row cylindrical roller bearing

Abstract

The utility model provides a kind of double-row cylindrical roller bearing, comprising: inner ring, outer ring and the two rows of rollers being installed between the inner ring and the outer ring;Two rows of the roller between being provided with inner spacer, the inner spacer is sleeved in the raceway outside of the inner ring;The inner ring is connected with one inner baffle each side, and the distance between the inner baffle and the inner spacer is equal to the length of the roller.The utility model is sleeved with inner spacer on inner ring, play the role of separating two rows of rollers, and need not be provided with dimple on inner ring raceway, increase the thermal stability of inner ring, reduce crack when heat treatment, it is favorable to prolong the service life of bearing.Meanwhile, inner baffle is set on the both sides of inner ring, play the limiting effect to the roller, and the axial displacement of the roller is reduced.Meanwhile, the setting of inner side surface step on inner ring can prevent the problem that bearing inner hole deformation amount is too large and cannot be assembled.

Description

Technical Field

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

[0002] Some existing double-row cylindrical roller bearings lack internal spacers, resulting in significant axial movement of the rollers and making them prone to damage. Others use internal spacers to separate the two rows of rollers, but these spacers are embedded in the inner ring raceway, which has pits that make it highly susceptible to cracking during heat treatment. Therefore, there is a need in the art for a double-row cylindrical roller bearing that can effectively reduce axial movement of the rollers while ensuring the strength of the inner ring raceway. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a double-row cylindrical roller bearing that can effectively reduce the axial movement of the rollers and ensure the strength of the inner ring raceway.

[0004] This utility model provides a double-row cylindrical roller bearing, comprising: an inner ring, an outer ring, and two rows of rollers installed between the inner ring and the outer ring; an inner spacer is provided between the two rows of rollers, the inner spacer being sleeved on the outside of the raceway of the inner ring; an inner retainer is connected to each side of the inner ring, and the distance between the inner retainer and the inner spacer is equal to the length of the roller.

[0005] Furthermore, the inner diameter of the inner spacer is equal to the outer diameter of the inner ring.

[0006] Furthermore, the inner retaining ring and the inner ring are interference fit.

[0007] Furthermore, a step is provided on the inner side of the assembly position of the inner ring and the inner retaining ring.

[0008] Furthermore, the width of the step matches the width of the inner retaining ring.

[0009] Furthermore, the inner ring has a mounting groove at the position where it is assembled with the inner retaining ring.

[0010] Furthermore, the dimensions of the mounting groove match the dimensions of the inner retaining ring.

[0011] Furthermore, the material of the inner spacer is Gcr15A.

[0012] Furthermore, the inner retaining ring is made of Gcr15A.

[0013] Furthermore, the inner ring, outer ring, and roller are made of Gcr15A.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses an inner spacer ring fitted onto the inner ring to separate the two rows of rollers, and eliminates the need for recesses on the inner ring raceway, thereby increasing the thermal stability of the inner ring, reducing cracks during heat treatment, and helping to extend the service life of the bearing.

[0016] 2. The inner ring of this invention features inner retaining rings on both sides to limit the movement of the rollers and reduce their axial movement. Simultaneously, the stepped design on the inner side of the inner ring prevents assembly problems caused by excessive deformation of the bearing bore. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a structural diagram of a double-row cylindrical roller bearing according to an embodiment of the present invention.

[0019] The attached diagram is labeled as follows:

[0020] 1: Inner ring; 2: Outer ring; 3: Roller; 4: Inner spacer ring; 5: Inner retainer ring; 6: Step. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figure 1 As shown, this utility model provides a double-row cylindrical roller bearing, including an inner ring 1, an outer ring 2, and two rows of rollers 3 installed between the inner ring 1 and the outer ring 2; an inner spacer 4 is provided between the two rows of rollers 3, and the inner spacer 4 is sleeved on the outside of the raceway of the inner ring 1; an inner retainer ring 5 is connected to each side of the inner ring 1, and the distance between the inner retainer ring 5 and the inner spacer ring 4 is equal to the length of the roller 3, so as to limit the roller 3 between the inner retainer ring 5 and the inner spacer ring 4 and reduce its axial movement. Preferably, the inner diameter of the inner spacer ring 4 is equal to the outer diameter of the inner ring 1, so as to achieve a seamless connection between the inner spacer ring 4 and the inner ring 1 and avoid the shaking caused by the loose connection of the inner spacer ring 4. More preferably, the inner retainer ring 5 and the inner ring 1 are interference fit, which increases the stability of the connection between the inner retainer ring 5 and the inner ring 1, prevents the roller 3 from falling off, and ensures the limiting effect of the roller 3. This invention features an inner spacer 4 fitted onto the inner ring 1, which serves to separate the two rows of rollers 3. It eliminates the need for recesses on the raceway of the inner ring 1, thereby increasing the thermal stability of the inner ring, reducing cracks during heat treatment, and extending the service life of the bearing.

[0025] In one aspect of this utility model embodiment, a step 6 is provided on the inner side of the assembly position of the inner ring 1 and the inner retaining ring 5. Due to the interference fit of the inner retaining ring 5, the inner ring 1 will deform inwards. In severe cases, this may lead to a reduction in the size of the bearing inner hole, affecting the bearing assembly. The step 6 serves to buffer the inward deformation of the inner ring 1, preventing assembly failure due to excessive deformation of the bearing inner hole. Preferably, the width of the step 6 matches the width of the inner retaining ring 5. Figure 1 In the embodiment shown, the width of the step 6 is slightly smaller than the width of the inner retaining ring 5, and the inner ring 1 has a mounting groove at the position where it is assembled with the inner retaining ring 5, which matches the size of the inner retaining ring 5, so as to facilitate the assembly of the inner retaining ring 5.

[0026] In one aspect of this utility model embodiment, to ensure the overall strength of the bearing material, the inner spacer 4 is made of Gcr15A, and the inner retaining ring 5 can also be made of Gcr15A. Additionally, the inner ring 1, outer ring 2, and roller 3 can also be made of Gcr15A.

[0027] In the specific design and use of this utility model, the size of the roller is calculated based on the bearing size data to meet the required load. Then, the width of the inner spacer is determined based on the roller size, followed by the width of the inner retaining ring. Finally, the step size on the inner diameter surface is determined based on the inner retaining ring to meet the needs of actual working conditions.

[0028] 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 cylindrical roller bearing, characterized in that, include: Inner ring (1), outer ring (2), and two rows of rollers (3) installed between the inner ring (1) and the outer ring (2); An inner spacer (4) is provided between the two rows of rollers (3), and the inner spacer (4) is fitted onto the outside of the raceway of the inner ring (1); An inner retaining ring (5) is connected to each side of the inner ring (1), and the distance between the inner retaining ring (5) and the inner spacer (4) is equal to the length of the roller (3).

2. The double-row cylindrical roller bearing according to claim 1, characterized in that, The inner diameter of the inner spacer (4) is equal to the outer diameter of the inner ring (1).

3. The double-row cylindrical roller bearing according to claim 1, characterized in that, The inner retaining ring (5) and the inner ring (1) are interference fit.

4. The double-row cylindrical roller bearing according to claim 3, characterized in that, A step (6) is provided on the inner side of the assembly position of the inner ring (1) and the inner retaining ring (5).

5. The double-row cylindrical roller bearing according to claim 4, characterized in that, The width of the step (6) matches the width of the inner retaining ring (5).

6. The double-row cylindrical roller bearing according to claim 3, characterized in that, The inner ring (1) has an assembly groove at the position where it is assembled with the inner retaining ring (5).

7. The double-row cylindrical roller bearing according to claim 6, characterized in that, The dimensions of the assembly groove match the dimensions of the inner retaining ring (5).

8. The double-row cylindrical roller bearing according to claim 1, characterized in that, The material of the inner spacer (4) is Gcr15A.

9. The double-row cylindrical roller bearing according to claim 1, characterized in that, The inner retaining ring (5) is made of Gcr15A.

10. The double-row cylindrical roller bearing according to any one of claims 1 to 9, characterized in that, The inner ring (1), outer ring (2) and roller (3) are made of Gcr15A.

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