Deep groove ball bearing with embedded outer gear ring

Abstract

The utility model belongs to the technical field of deep groove ball bearings, and particularly relates to a deep groove ball bearing with an embedded outer gear ring, which comprises an inner ring, an outer ring, a retainer and a plurality of steel balls, the inner ring and the outer ring are coaxially arranged, the plurality of steel balls are uniformly distributed between the inner ring and the outer ring through the retainer, the outer gear ring is embedded on the outer peripheral surface of the outer ring, and the outer gear ring is embedded on the outer peripheral surface of the outer ring. And the inner circumferential surface of the outer gear ring is in interference fit with the outer circumferential surface of the outer ring. The bearing and the outer gear ring are of a split structure and can be assembled after being machined respectively, machining difficulty is reduced, the bearing and the outer gear ring can be made of different materials according to working condition requirements, and the purposes of reducing cost, improving efficiency and prolonging service life are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep groove ball bearings, and in particular relates to a deep groove ball bearing with an inlaid outer gear ring. Background Art

[0002] Conventional large-scale gear ring bearings are mostly turntable bearings, which are made of low-carbon steel (45# or 50Mn or 42CrMo). They have lower hardness than bearing steel and lower fatigue life than bearing steel bearings. In addition, for large deep groove ball bearing products, the bearing gear ring is difficult to process and the processing cost is high. Therefore, in order to meet the working conditions, a gear ring deep groove ball bearing with both low cost and relatively high fatigue life is needed. Summary of the invention

[0003] In view of the defects of the prior art mentioned above, the purpose of the utility model is to provide a deep groove ball bearing with an inlaid outer gear ring, which meets the product requirements of low cost and high fatigue life.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a deep groove ball bearing with an inlaid external gear ring, comprising an inner ring, an outer ring, a retaining frame and a plurality of steel balls, the inner ring and the outer ring are coaxially arranged, the plurality of steel balls are evenly distributed between the inner ring and the outer ring through the retaining frame, the outer peripheral surface of the outer ring is inlaid with the external gear ring, and the inner peripheral surface of the external gear ring is interference fit with the outer peripheral surface of the outer ring.

[0005] Furthermore, the outer gear ring is detachably connected to the outer ring.

[0006] Furthermore, the outer gear ring is assembled on the outer peripheral surface of the outer ring by means of shrink fitting and is interference fit with the outer peripheral surface of the outer ring.

[0007] Furthermore, the retainer includes a retainer seat and a retainer cover, and the retainer seat and the retainer cover are riveted together by a plurality of rivets.

[0008] Furthermore, the connection between the retainer seat and the retainer cover is positioned by means of a stepped stop.

[0009] Furthermore, the outer ring surface of the outer gear ring includes a toothed portion and an arc-shaped portion, which are connected to form the outer ring surface of the outer gear ring; when the bearing is used for swinging motion, the central angle of the arc length of the toothed portion is greater than the maximum swing angle of the bearing.

[0010] Furthermore, the arc-shaped portion is connected to the bottom of the tooth groove of the tooth-shaped portion, the bearing is meshed with the external mechanism through the outer gear ring, the tooth-shaped portion is meshed with the tooth structure of the external mechanism, and the arc-shaped portion has no contact with the tooth structure of the external mechanism.

[0011] Furthermore, the outer ring surface of the outer gear ring includes one tooth-shaped portion or two tooth-shaped portions spaced 180 degrees apart.

[0012] Furthermore, the bearing is formed by processing low-carbon steel, and the outer gear ring is formed by processing bearing steel.

[0013] Beneficial effects of the utility model: the bearing and the outer gear ring of the utility model are split structures and can be processed separately and then assembled, which reduces the difficulty of processing. The bearing and the outer gear ring can be made of different materials according to the working conditions, so as to achieve the purpose of reducing costs, increasing efficiency and prolonging service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a deep groove ball bearing with an inlaid outer gear ring of the utility model;

[0015] Figure 2 It is a cross-sectional view of a deep groove ball bearing with an inlaid outer gear ring of the utility model;

[0016] Figure 3 It is a schematic diagram of the alternating continuation of the toothed portion and the arc-shaped portion of the outer gear ring;

[0017] In the figure: 1, inner ring, 2, outer ring, 3, steel ball, 4, cage seat, 5, cage cover, 6, rivet, 7, outer gear ring, 8, toothed part, 9, arc part. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] Example 1

[0020] See attached Figure 1-2 A deep groove ball bearing with an inlaid outer gear ring, comprising an inner ring 1, an outer ring 2, a retainer and a plurality of steel balls 3, wherein the inner ring 1 and the outer ring 2 are coaxially arranged, and the plurality of steel balls 3 are evenly distributed between the inner ring 1 and the outer ring 2 through the retainer, and the outer peripheral surface of the outer ring 2 is inlaid with an outer gear ring 7, and the inner peripheral surface of the outer gear ring 7 is interference fit with the outer peripheral surface of the outer ring, and the outer peripheral surface of the outer gear ring 7 is integrally processed with teeth that mesh with an external mechanism. The outer gear ring 7 and the outer ring 2 are split structures, and are detachably connected, which is convenient for processing and can be replaced and repaired.

[0021] Furthermore, in order to ensure the stability of the outer gear ring assembly and achieve interference fit, the outer gear ring 7 is assembled on the outer circumference of the outer ring 2 by heat installation. After cooling, the outer gear ring 7 and the outer circumference of the outer ring 2 are interference fit.

[0022] Furthermore, the cage includes a cage seat 4 and a cage cover 5 , and the cage seat 4 and the cage cover 5 are riveted together by a plurality of rivets 6 .

[0023] Furthermore, in order to ensure the positioning accuracy of the cage seat 4 and the cage cover 5, the connection between the cage seat 4 and the cage cover 5 is positioned by a stepped stop.

[0024] The bearing of the utility model has the following advantages: 1. The structure of the bearing inlaid with the gear ring avoids the cumbersome processing mode of the slewing bearing; 2. The maintenance cost of the inlaid gear ring is low, and the gear ring can be replaced separately after being worn to reduce costs; 3. The product has high precision. The highest precision level of traditional slewing bearings is P5 level, and the inlaid type can improve the overall running precision.

[0025] Example 2

[0026] The technical solution of Example 2 is basically the same as that of Example 1, except that Figure 3 The outer ring surface of the outer gear ring 7 of the bearing includes a toothed portion 8 and an arc portion 9, and the toothed portion 8 and the arc portion 9 are connected to form the outer ring surface of the outer gear ring 7. The deep groove ball bearing of this embodiment is used for reciprocating swinging motion or the internal and external teeth meshing of the coaxial gear ring. When the bearing is used for reciprocating swinging motion, the central angle of the arc length of the toothed portion is greater than the maximum swing angle of the bearing.

[0027] Furthermore, the arc-shaped portion 9 is connected to the bottom of the tooth groove of the tooth-shaped portion 8, the bearing is meshed with the external mechanism through the outer gear ring, the tooth-shaped portion 8 is meshed with the tooth structure of the external mechanism, and the arc-shaped portion 9 has no contact with the tooth structure of the external mechanism.

[0028] Based on the above technical solution, reducing the number of teeth in the circumferential direction saves machining costs; the structure of partial teeth reduces the weight of the entire device, so that it meets the requirements of lightweight; the structural cross-sectional area of ​​partial teeth is smaller, saving internal use space.

[0029] Furthermore, there are one or two tooth-shaped portions 8, the central angle of the arc length of the tooth-shaped portion 5 is greater than the maximum swing angle of the bearing, and when there are two tooth-shaped portions 8, the two tooth-shaped portions 8 are spaced 180° apart.

[0030] For example, according to the present embodiment Figure 3 As shown, the outer ring surface of the outer gear ring 7 includes two tooth-shaped portions 8 and two arc-shaped portions 9, and the central angle of each tooth-shaped portion 8 and each arc-shaped portion 9 is 90 degrees in arc length.

[0031] Furthermore, the bearing is formed by processing low-carbon steel, and the outer gear ring is formed by processing bearing steel, which reduces the cost of the bearing and ensures the strength of the outer gear ring.

[0032] It should be noted that the parts not described in detail in the present invention are prior art.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A deep groove ball bearing with an inlaid outer gear ring, characterized in that: It includes an inner ring, an outer ring, a retaining frame and a plurality of steel balls. The inner ring and the outer ring are coaxially arranged. The plurality of steel balls are evenly distributed between the inner ring and the outer ring through the retaining frame. The outer peripheral surface of the outer ring is inlaid with an outer gear ring. The inner peripheral surface of the outer gear ring is interference fit with the outer peripheral surface of the outer ring.

2. A deep groove ball bearing with an inlaid outer gear ring according to claim 1, characterized in that: The outer gear ring is detachably connected to the outer ring.

3. The deep groove ball bearing with an inlaid outer gear ring according to claim 1, characterized in that: The outer gear ring is assembled on the outer peripheral surface of the outer ring by means of shrink fitting and is interference fit with the outer peripheral surface of the outer ring.

4. A deep groove ball bearing with an inlaid external gear ring according to any one of claims 1 to 3, characterized in that: The retainer comprises a retainer seat and a retainer cover, and the retainer seat and the retainer cover are riveted and connected by a plurality of rivets.

5. A deep groove ball bearing with an inlaid outer gear ring according to claim 4, characterized in that: The connection between the cage seat and the cage cover is positioned by means of a stepped stop.

6. The deep groove ball bearing with an inlaid outer gear ring according to claim 1, characterized in that: The outer ring surface of the outer gear ring includes a toothed portion and an arcuate portion, and the toothed portion and the arcuate portion are connected to form the outer ring surface of the outer gear ring.

7. A deep groove ball bearing with an inlaid outer gear ring according to claim 6, characterized in that: The arc-shaped portion is connected with the bottom of the tooth groove of the tooth-shaped portion, the bearing is meshed with the external mechanism through the outer gear ring, the tooth-shaped portion is meshed with the tooth structure of the external mechanism, and the arc-shaped portion has no contact with the tooth structure of the external mechanism.

8. The deep groove ball bearing with an inlaid outer gear ring according to claim 6, characterized in that: The outer ring surface of the outer gear ring includes one tooth-shaped portion or two tooth-shaped portions spaced 180 degrees apart.

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