Multi-row angular contact thrust ball bearing

Abstract

The embodiment of the utility model discloses a multi-row angular contact thrust ball bearing, which comprises an inner ring, an outer ring and a rolling body arranged between the inner ring and the outer ring, the outer surface of the inner ring is provided with a plurality of rows of raceways, and the diameters of the plurality of rows of raceways are gradually reduced from left to right; the inner surface of the outer ring is provided with a plurality of rows of raceways in one-to-one correspondence with the raceways on the outer surface of the inner ring, and the diameters of the plurality of rows of raceways are also gradually reduced from left to right; and the rolling bodies are arranged in each row of raceways between the inner ring and the outer ring. According to the multi-row angular contact thrust ball bearing disclosed by the embodiment of the utility model, the axial load is greatly improved while the radial load is ensured, and the multi-row angular contact thrust ball bearing can be used in occasions with special requirements on the axial load, the radial load and the axial and radial combined load.

Description

Technical fields:

[0001] This utility model relates to a multi-row angular contact thrust ball bearing. Background technology:

[0002] Existing double-row angular contact thrust ball bearings typically consist of an inner ring, an outer ring, two rows of raceways between the inner and outer rings, and rolling elements within the two rows of raceways. The double-row raceways between the inner and outer rings are identical. They cannot meet the specific requirements of applications with special requirements for axial loads, radial loads, and combined axial and radial loads. Summary of the Invention:

[0003] To overcome the problem that existing double-row angular contact thrust ball bearings cannot meet the special requirements of applications with axial load, radial load, and combined axial and radial load, this utility model provides a multi-row angular contact thrust ball bearing.

[0004] A multi-row angular contact thrust ball bearing includes an inner ring, an outer ring, and rolling elements disposed between the inner and outer rings. The outer surface of the inner ring has multiple rows of raceways, the diameter of which gradually decreases from left to right. The inner surface of the outer ring has multiple rows of raceways that correspond one-to-one with the raceways on the outer surface of the inner ring, the diameter of which also gradually decreases from left to right. The rolling elements are mounted on the raceways between the inner and outer rings.

[0005] This utility model discloses a multi-row angular contact thrust ball bearing, in which multiple rows of raceways are formed on the outer surface of the inner ring, with the diameter of the raceways gradually decreasing from left to right; multiple rows of raceways are formed on the inner surface of the outer ring, corresponding one-to-one with the raceways on the outer surface of the inner ring, and the diameter of these raceways also gradually decreases from left to right; rolling elements are mounted on the raceways between the inner and outer rings. This design allows the multi-row angular contact thrust ball bearing to significantly increase axial load while ensuring radial load capacity, thus meeting the needs of applications requiring specific axial load, radial load, and combined axial and radial loads. Attached image description:

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a cross-sectional view of the structure of the multi-row angular contact thrust ball bearing of this utility model;

[0008] Figure 2 This is a top view of the multi-row angular contact thrust ball bearing of this utility model;

[0009] Figure 3 This is a left view of the multi-row angular contact thrust ball bearing of this utility model. Detailed implementation method:

[0010] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0011] When ordinal numbers such as "first" and "second" are mentioned in the embodiments of this utility model, unless they actually express the meaning of order according to the context, they should be understood as being used only for differentiation.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0013] like Figure 1 , Figure 2 , Figure 3 As shown, a multi-row angular contact thrust ball bearing includes an inner ring 1, an outer ring 2, and rolling elements 3 disposed between the inner ring 1 and the outer ring 2. The outer surface of the inner ring 1 has multiple rows of raceways, the diameter of which gradually decreases from left to right. The inner surface of the outer ring 2 has multiple rows of raceways that correspond one-to-one with the raceways on the outer surface of the inner ring 1, the diameter of which also gradually decreases from left to right. The rolling elements 3 are mounted on each row of raceways between the inner ring and the outer ring.

[0014] This utility model discloses a multi-row angular contact thrust ball bearing, in which multiple rows of raceways are formed on the outer surface of the inner ring, with the diameter of the raceways gradually decreasing from left to right; multiple rows of raceways are formed on the inner surface of the outer ring, corresponding one-to-one with the raceways on the outer surface of the inner ring, and the diameter of these raceways also gradually decreases from left to right; rolling elements are mounted on the raceways between the inner and outer rings. This design allows the multi-row angular contact thrust ball bearing to significantly increase axial load while ensuring radial load capacity, thus meeting the needs of applications requiring specific axial load, radial load, and combined axial and radial loads.

[0015] Furthermore, as a preferred embodiment rather than a limitation of this practice, the thickness of the outer ring 2 gradually increases from left to right; the thickness of the inner ring 1 gradually decreases from left to right. This allows the multi-row angular contact thrust ball bearing to significantly improve the axial load while ensuring radial load capacity.

[0016] Furthermore, as a preferred embodiment and not a limitation thereof, the outer ring 2 and the inner ring 1 are both integrally formed rings. This ensures installation accuracy.

[0017] Furthermore, as a preferred embodiment rather than a limitation, a first sealing groove 11 is formed on the right side of the inner surface of the inner ring 1; a second sealing groove 22 is formed on the right side of the outer surface of the outer ring 2. Sealing rings can be respectively provided in the first sealing groove 11 and the second sealing groove 22 to achieve sealing between the inner ring and the shaft, and between the outer ring and the seat hole, preventing liquid from overflowing from the inner hole and outer diameter of one end of the bearing to the other end.

[0018] Furthermore, as a preferred embodiment and not a limitation thereof, the second sealing groove 22 is located to the right of the first sealing groove 11 in the lateral direction. This results in a simple structure and good sealing effect.

[0019] Furthermore, as a preferred embodiment and not a limitation thereof, the left end face of the inner ring 1 is provided with a centrally symmetrical mounting and dismounting hole 12 along the axial direction. This facilitates the installation and use of the bearing product.

[0020] Furthermore, as a preferred embodiment and not a limitation thereof, a plurality of lubricating oil supply grooves 21 are provided on the right end face of the outer ring 2. These lubricating oil supply grooves 21 radially penetrate the outer ring 2 and are symmetrically arranged with each other. In this embodiment, there are a total of 4 lubricating oil supply grooves 21, which are evenly distributed along the circumference of the outer ring to facilitate lubrication of the bearing.

[0021] Furthermore, as a preferred embodiment and not a limitation thereof, such as Figure 2 As shown, the outer surface of the outer ring 2 has multiple rolling element mounting holes 20 corresponding to the multiple rows of raceways. Each rolling element mounting hole 20 passes through the outer ring 2 from the outside to the inside and communicates with the corresponding raceway. The rolling elements 3 are respectively mounted in the raceways between the inner ring 1 and the outer ring 2 through the multiple rolling element mounting holes 20. This allows the multi-row angular contact thrust ball bearing to withstand the required radial load while ensuring high axial load.

[0022] Furthermore, as a preferred embodiment and not a limitation thereof, such as Figure 2 , Figure 3 As shown, adjacent rolling element mounting holes 20 are staggered in the circumferential direction, and the included angle between the staggered spacing of adjacent rolling element mounting holes 20 in the circumferential direction is 15° to 45°. In this embodiment, the included angle of the staggered spacing can be 15°, 45°, and preferably 30°. This ensures that at least one row of rolling elements bears axial and radial loads.

[0023] Furthermore, as a preferred embodiment and not a limitation thereof, such as Figure 1 As shown, each rolling element assembly hole 20 is provided with a sealing plug 4. The lower surface of the sealing plug 4 has an arc-shaped structure that matches the shape of the raceway. Each rolling element assembly hole 20 has a retaining ring groove, and the upper surface of the sealing plug 4 is provided with a retaining ring 41. The sealing plug 4 is installed and fixed in the rolling element assembly hole 20 by the cooperation of the retaining ring 41 and the retaining ring groove. The structure is simple and can prevent the rolling element from coming out of the outer ring.

[0024] Furthermore, as a preferred embodiment of this invention and not a limitation thereof, such as Figure 1 , Figure 2 As shown, there are four rows of raceways, corresponding to four rolling element mounting holes 20. From left to right, the first and third mounting holes 20 are on the same straight line, as are the second and fourth mounting holes 20. The structure is simple, ensuring both the overall strength of the outer ring and that at least one row of rolling elements always bears the axial and radial loads. Furthermore, all rolling elements have the same outer diameter.

[0025] As another preferred embodiment of this invention, and not a limitation thereof, the multi-row angular contact thrust ball bearing of this solution preferably has a bearing contact angle of 60°, which has high axial load capacity and good radial load capacity; at the same time, the contact point (contact line or contact area) between the raceway and the rolling element can effectively avoid the rolling element assembly hole wall, which can effectively extend the service life of the bearing.

[0026] As another preferred embodiment, and not a limitation thereof, the multi-row angular contact thrust ball bearing of this solution is a multi-row full complement angular contact thrust ball bearing, with rolling elements 3 fully fitted in each row of raceways between the inner and outer rings. While ensuring radial load capacity, it also significantly improves axial load capacity, meeting the needs of applications requiring special axial load, radial load, and combined axial and radial loads.

[0027] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the protection scope of this utility model.

Claims

1. A multi-row angular contact thrust ball bearing, comprising an inner ring, an outer ring, and rolling elements disposed between the inner ring and the outer ring, characterized in that, Multiple rows of raceways are formed on the outer surface of the inner ring, and the diameter of the multiple rows of raceways gradually decreases from left to right; The inner surface of the outer ring has multiple rows of raceways that correspond one-to-one with the raceways on the outer surface of the inner ring. The diameter of these multiple rows of raceways also gradually decreases from left to right. The rolling elements are installed in rows of raceways between the inner and outer rings.

2. The multi-row angular contact thrust ball bearing as described in claim 1, characterized in that, The thickness of the outer ring gradually increases from left to right; the thickness of the inner ring gradually decreases from left to right; and / or The outer ring and the inner ring are both integrally molded rings.

3. The multi-row angular contact thrust ball bearing as described in claim 2, characterized in that, A first sealing groove is provided on the right side of the inner surface of the inner ring; and / or a second sealing groove is provided on the right side of the outer surface of the outer ring.

4. The multi-row angular contact thrust ball bearing as described in claim 3, characterized in that, In the horizontal direction, the second sealing groove is located to the right of the first sealing groove.

5. The multi-row angular contact thrust ball bearing as described in any one of claims 1-4, characterized in that, The left end face of the inner ring has a centrally symmetrical loading and unloading hole along the axial direction.

6. The multi-row angular contact thrust ball bearing as described in any one of claims 1-4, characterized in that, Several lubricating oil supply grooves are provided on the right end face of the outer ring. These lubricating oil supply grooves penetrate the outer ring radially and are arranged symmetrically to each other.

7. The multi-row angular contact thrust ball bearing as described in any one of claims 1-4, characterized in that, The outer surface of the outer ring has multiple rolling element mounting holes that correspond one-to-one with multiple raceways. Each rolling element mounting hole passes through the outer ring from the outside to the inside and is interconnected with the corresponding raceway. The rolling elements are respectively mounted in the raceways between the inner ring and the outer ring through the multiple rolling element mounting holes.

8. The multi-row angular contact thrust ball bearing as described in claim 7, characterized in that, Adjacent rolling element assembly holes are staggered and spaced apart in the circumferential direction, and the included angle between the staggered and spaced adjacent rolling element assembly holes in the circumferential direction is 15° to 45°.

9. The multi-row angular contact thrust ball bearing as described in claim 8, characterized in that, Each rolling element assembly hole is provided with a sealing plug. The lower surface of the sealing plug has an arc-shaped structure that matches the shape of the raceway. Each rolling element assembly hole is provided with a retaining ring groove. The upper surface of the sealing plug is provided with a retaining ring. The sealing plug is installed and fixed in the rolling element assembly hole by the cooperation of the retaining ring and the retaining ring groove.

10. The multi-row angular contact thrust ball bearing as described in claim 9, characterized in that, There are four rows of raceways, and four corresponding rolling element mounting holes; from left to right, the first and third mounting holes are on the same straight line, and the second and fourth mounting holes are on the same straight line.

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