Multi-row angular contact thrust ball bearing

Abstract

The embodiment of the invention 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 invention, 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 field:

[0001] The invention relates to a multi-row angular contact thrust ball bearing. Background technology:

[0002] The existing double-row angular contact thrust ball bearings usually include an inner ring, an outer ring, two rows of raceways between the inner ring and the outer ring, and rolling elements in the two rows of raceways. The double rows of raceways between the inner and outer rings are the same. They cannot meet the use occasions with special requirements for axial load, radial load and axial radial combined load. Summary of the invention:

[0003] In order to overcome the problem that the existing double-row angular contact thrust ball bearings cannot meet the use occasions with special requirements for axial load, radial load and axial-radial combined load, an embodiment of the present invention provides a multi-row angular contact thrust ball bearing.

[0004] A multi-row angular contact thrust ball bearing comprises an inner ring, an outer ring, and rolling bodies arranged between the inner ring and the outer ring. The outer surface of the inner ring is provided with multiple rows of raceways, and the diameters of the multiple rows of raceways gradually decrease from left to right; the inner surface of the outer ring is provided with multiple rows of raceways corresponding to the raceways on the outer surface of the inner ring, and the diameters of the multiple rows of raceways also gradually decrease from left to right; the rolling bodies are installed in each row of raceways between the inner ring and the outer ring.

[0005] The multi-row angular contact thrust ball bearing of the embodiment of the present invention has multiple rows of raceways 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 corresponding to the raceways on the outer surface of the inner ring, and the diameter of the multiple rows of raceways also gradually decreases from left to right; the rolling elements are installed in each row of raceways between the inner ring and the outer ring. The multi-row angular contact thrust ball bearing ensures the radial load while greatly improving the axial load, and can meet the use occasions with special requirements for axial load, radial load and axial-radial combined load. Description of the drawings:

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0007] Figure 1 It is a structural cross-sectional view of a multi-row angular contact thrust ball bearing of the present invention;

[0008] Figure 2 A top view of a multi-row angular contact thrust ball bearing according to the present invention;

[0009] Figure 3It is a left side view of the multi-row angular contact thrust ball bearing of the present invention. Specific implementation method:

[0010] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0011] When the embodiments of the present invention mention ordinal numbers such as "first" and "second", unless they do express the meaning of order according to the context, they should be understood as being merely for the purpose of distinction.

[0012] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0013] like Figure 1 , Figure 2 , Figure 3 As shown, a multi-row angular contact thrust ball bearing comprises an inner ring 1, an outer ring 2, and rolling elements 3 arranged between the inner ring 1 and the outer ring 2. The outer surface of the inner ring 1 is provided with multiple rows of raceways, and the diameters of the multiple rows of raceways gradually decrease from left to right; the inner surface of the outer ring 2 is provided with multiple rows of raceways corresponding to the raceways on the outer surface of the inner ring 1, and the diameters of the multiple rows of raceways also gradually decrease from left to right; the rolling elements 3 are installed in each row of raceways between the inner ring and the outer ring.

[0014] The multi-row angular contact thrust ball bearing of the embodiment of the present invention has multiple rows of raceways 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 corresponding to the raceways on the outer surface of the inner ring, and the diameter of the multiple rows of raceways also gradually decreases from left to right; the rolling elements are installed in each row of raceways between the inner ring and the outer ring. The multi-row angular contact thrust ball bearing ensures the radial load while greatly improving the axial load, and can meet the use occasions with special requirements for axial load, radial load and axial-radial combined load.

[0015] Furthermore, as a preferred implementation of this embodiment but not a limitation, the thickness of the outer ring 2 gradually increases from left to right, and the thickness of the inner ring 1 gradually decreases from left to right, so that the multi-row angular contact thrust ball bearing can ensure the radial load while greatly improving the axial load.

[0016] Furthermore, as a preferred implementation mode of this embodiment but not limiting, the outer ring 2 and the inner ring 1 are integrally formed integral rings, which can ensure the installation accuracy.

[0017] Furthermore, as a preferred implementation mode of this embodiment but not limiting, a first sealing groove 11 is provided on the right side of the inner surface of the inner ring 1; a second sealing groove 22 is provided on the right side of the outer surface of the outer ring 2. Sealing rings can be provided in the first sealing groove 11 and the second sealing groove 22 respectively to achieve sealing between the inner ring and the shaft and between the outer ring and the seat hole, and to prevent 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 implementation of this embodiment but not limiting, in the horizontal direction, the second sealing groove 22 is located on the right side of the first sealing groove 11. The structure is simple and the sealing effect is good.

[0019] Furthermore, as a preferred implementation of this embodiment but not limiting, a centrally symmetrical loading and unloading hole 12 is opened along the axial direction on the left end surface of the inner ring 1 to facilitate the installation and use of the bearing product.

[0020] Furthermore, as a preferred implementation of this embodiment but not limiting, a plurality of lubricating oil supply grooves 21 are provided at the right end surface of the outer ring 2, and the plurality of lubricating oil supply grooves 21 radially penetrate the outer ring 2 and are symmetrically arranged. In this embodiment, there are 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 implementation mode of this embodiment but not limiting, Figure 2 As shown, the outer surface of the outer ring 2 is provided with a plurality of rolling element assembly holes 20 corresponding to the plurality of raceways, each of which penetrates the outer ring 2 from the outside to the inside and is connected with the corresponding raceway; the rolling elements 3 are respectively installed in the raceways of each row between the inner ring 1 and the outer ring 2 through the plurality of rolling element assembly holes 20. This allows the multi-row angular contact thrust ball bearing to withstand the required radial load while ensuring a high axial load.

[0022] Furthermore, as a preferred implementation mode of this embodiment but not limiting, Figure 2 , Figure 3 As shown, adjacent rolling element assembly holes 20 are arranged at intervals in the circumferential direction, and the angle of the offset intervals of adjacent rolling element assembly holes 20 in the circumferential direction is 15 to 45 degrees. In this embodiment, the angle of the offset intervals can be 15 degrees, 45 degrees, and preferably 30 degrees. This can ensure that at least one row of rolling elements can withstand axial and radial loads.

[0023] Furthermore, as a preferred implementation mode of this embodiment but not limiting, Figure 1As shown, the rolling element assembly hole 20 is provided with a sealing plug 4, and the lower surface of the sealing plug 4 is provided with an arc structure that matches the shape of the raceway; the rolling element assembly hole 20 is provided with a snap ring groove, and the upper surface of the sealing plug 4 is provided with a snap ring 41, and the sealing plug 4 is installed and fixed in the rolling element assembly hole 20 through the cooperation of the snap ring 41 and the snap ring groove. The structure is simple and can prevent the rolling element from falling out of the outer ring.

[0024] Furthermore, as a preferred implementation mode of this embodiment but not limiting, Figure 1 , Figure 2 As shown, there are four rows of raceways, and there are four corresponding rolling element assembly holes 20; from left to right, the first assembly hole 20 and the third assembly hole 20 are in the same straight line, and the second assembly hole 20 and the fourth assembly hole 20 are in the same straight line. The structure is simple, which can not only ensure the overall strength of the outer ring, but also ensure that there is always a row of rolling elements to bear axial and radial loads. At the same time, the outer diameters of the rolling elements are consistent.

[0025] As another preferred implementation mode of this embodiment but not limitation, the multi-row angular contact thrust ball bearing of this scheme preferably has a bearing contact angle of 60°, and 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 wall of the rolling element assembly hole, which can effectively extend the service life of the bearing.

[0026] As another preferred implementation mode of this embodiment but not limiting, the multi-row angular contact thrust ball bearing of this scheme is a multi-row full-fill angular contact thrust ball bearing, and the rolling elements 3 are fully filled in each row of raceways between the inner ring and the outer ring. While ensuring the radial load, the axial load is greatly improved, which can meet the use occasions with special requirements for axial load, radial load and axial-radial combined load.

[0027] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of the present invention, or any technical deduction or replacement based on the concept of the present invention, shall be regarded as the protection scope of the present invention.

Claims

1. A multi-row angular contact thrust ball bearing, comprising an inner ring, an outer ring, and a rolling element disposed between the inner ring and the outer ring, characterized in that: There are multiple rows of raceways on the outer surface of the inner ring, and the diameters of the multiple rows of raceways gradually decrease from left to right; The inner surface of the outer ring is provided with multiple rows of raceways corresponding to the raceways on the outer surface of the inner ring, and the diameters of the multiple rows of raceways also gradually decrease from left to right; The rolling elements are installed in each row of raceways between the inner ring and the outer ring.

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

3. The multi-row angular contact thrust ball bearing according to 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 according to claim 3, characterized in that: In the lateral direction, the second sealing groove is located on the right side of the first sealing groove.

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

6. The multi-row angular contact thrust ball bearing according to any one of claims 1 to 4, characterized in that: A plurality of lubricating oil supply grooves are provided at the right end surface of the outer ring. The plurality of lubricating oil supply grooves radially penetrate the outer ring and are symmetrically arranged with respect to each other.

7. The multi-row angular contact thrust ball bearing according to any one of claims 1 to 4, characterized in that: The outer surface of the outer ring is provided with a plurality of rolling body assembly holes corresponding to the plurality of raceways. Each rolling body assembly hole penetrates the outer ring from the outside to the inside and is interconnected with the corresponding raceway. The rolling bodies are respectively mounted on each raceway between the inner ring and the outer ring through the plurality of rolling body assembly holes.

8. The multi-row angular contact thrust ball bearing according to claim 7, characterized in that: Adjacent rolling element assembly holes are arranged at intervals in the circumferential direction, and the angle between the adjacent rolling element assembly holes at intervals in the circumferential direction is 15 to 45 degrees.

9. The multi-row angular contact thrust ball bearing according to claim 8, characterized in that: A sealing plug is provided on the rolling element assembly hole, and an arc structure matching the shape of the raceway is provided on the lower surface of the sealing plug; a retaining ring groove is provided in the rolling element assembly hole, and a retaining ring is provided on the upper surface of the sealing plug, and the sealing plug is installed and fixed in the rolling element assembly hole through the cooperation between the retaining ring and the retaining ring groove.

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

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