Basket-shaped retainer full complement self-aligning roller bearing

Abstract

The utility model relates to a bearing, in particular to a basket-shaped retainer full complement self-aligning roller bearing which comprises an outer ring, rollers, a retainer and an inner ring, and the retainer is of a basket-shaped structure formed by a plurality of strip-shaped columns; the rollers are arranged between the outer ring and the inner ring in a rolling mode and contained in the basket-shaped retainer. The bearing adopts a special raceway design, so that the self-aligning function is realized; and a basket-shaped full-complement retainer form is adopted, so that the roller is prevented from being loosened in the dismounting process, the weight of the retainer is reduced, tedious assembly is removed, the structure is simple, the processing is convenient, the cost is saved, and the benefit is improved.

Description

Technical Field

[0001] The utility model relates to a bearing, in particular to a basket-shaped retaining frame fully loaded spherical roller bearing, belonging to the technical field of bearings. Background Art

[0002] The most commonly used spherical roller bearings on the market are of the type without cage or with non-full-fill cage type; the cage structure usually adopts a split assembly type, which not only has a relatively large number of parts and a complex structure, but also is troublesome to install and disassemble, affecting the assembly accuracy; at the same time, when the roller is disassembled, the roller and cage assembly are prone to loosening, which is not conducive to off-machine inspection. Summary of the invention

[0003] In view of the above technical defects, the purpose of the utility model is to provide a basket-shaped cage fully loaded spherical roller bearing, which has both aligning function and can ensure that the rollers will not fall apart when disassembled, and at the same time has a certain radial bearing capacity.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a basket-shaped cage full-filled spherical roller bearing, comprising: an outer ring, a roller, a cage and an inner ring, the cage is a basket-shaped structure composed of a plurality of strip columns; the roller is rotatably arranged between the outer ring and the inner ring and contained in the basket-shaped cage;

[0005] Furthermore, the roller is a self-aligning roller with an outer surface in the shape of a combination of curves and straight lines, and the raceway of the outer ring is an arc surface; when the bearing is running, there is surface contact between the roller and the outer ring raceway, and the outer ring has a certain self-aligning function, and normal operation can be guaranteed even under bending conditions;

[0006] Furthermore, the inner ring raceway generatrix is ​​in a straight line form, and the roller surface includes three sections, both ends of which are spherical, and the middle section is straight, and the middle straight section is in contact with the inner ring raceway, and the contact between the two is a small segment line contact, which reduces friction;

[0007] Furthermore, the basket-shaped structure retainer is a front and rear double-piece body, and the double-piece body is supported by a plurality of groups of strip columns, and a plurality of protruding guide round tables are respectively provided at relative positions inside the front and rear double-piece bodies;

[0008] Furthermore, the plurality of strip columns are distributed on the inner diameter edge and the outer diameter edge of the double-piece body, and each group of strip columns includes two, one is arranged on the outer diameter of the double-piece body, which is an outer diameter beam; and the other is arranged on the inner diameter of the double-piece body corresponding to the position of the outer diameter beam, which is an inner diameter beam;

[0009] Further, each two adjacent groups of strip columns, that is, two outer diameter beams and two inner diameter beams together form a basket-shaped unit; the roller is located in the basket-shaped unit;

[0010] Furthermore, a pair of guide truncated cones are distributed in each basket-shaped unit, and both ends of the roller are guided by the two guide truncated cones;

[0011] The basket-shaped unit in this solution is not equivalent to the pocket of a conventional cage. Since each group of two strip-shaped columns is two independent bodies and is not connected to form an integrated cage beam, the rollers in each two adjacent basket-shaped units can be close to each other to form a full-complement bearing.

[0012] Furthermore, the cross section of the outer diameter beam is a trapezoidal structure, the outer diameter beam forms an outer locking point of the roller, and the outer diameter beam and the roller are interference fit; during installation, the outer diameter beam is assembled with the roller to ensure that the roller and the retainer do not come loose when the inner ring of the bearing is disassembled;

[0013] At the same time, the distance between each two adjacent outer diameter beams depends on the diameter of the roller, so as to ensure that the roller can be installed from the outer diameter of the cage and the roller will not fall out;

[0014] Furthermore, the cross section of the inner diameter beam is an inclined trapezoidal structure, the top of the inner diameter beam is a straight plane, both sides of the straight plane of the inner diameter beam are symmetrical inclined guide surfaces, and the two guide surfaces are tangent to the roller; the two tangent points of the inner diameter beam and the roller form support points.

[0015] Furthermore, the two inclined guide surfaces of the inner diameter beam are respectively tangent to the maximum diameter of the roller, and the inclination angle thereof is generally about 35°.

[0016] Furthermore, the cage in the present solution is an integrated cage formed by nitriding and stamping.

[0017] The basket-shaped cage fully loaded spherical roller bearing of the utility model has the following beneficial effects:

[0018] The bearing adopts a special raceway design to achieve the self-aligning function; and adopts a basket-shaped fully loaded cage to ensure that the rollers do not fall apart during disassembly. At the same time, it reduces the weight of the cage itself and eliminates cumbersome assembly. It has a simple structure, is easy to process, saves costs, and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural diagram of a basket-shaped cage fully loaded spherical roller bearing.

[0020] Figure 2 for Figure 1 Middle cage structure diagram.

[0021] Figure 3 This is a three-dimensional structural diagram of the cage.

[0022] Figure 4 This is a side view of the bearing assembly of the utility model.

[0023] Figure 5 for Figure 4 A partial enlarged view of .

[0024] In the figure, 1, outer ring, 2, roller, 3, cage, 4, inner ring, 3.1, double-piece body, 3.2, guide cone, 3.3, outer diameter beam, 3.4, inner diameter beam, 3.4.1, straight plane, 3.4.2, inclined guide surface. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1-4 A basket-shaped cage full-filled spherical roller bearing shown in the figure comprises: an outer ring 1, an inner ring 4, a cage 3 and a plurality of rollers 2, wherein the cage 3 is a basket-shaped structure composed of a plurality of strip-shaped columns; the rollers 2 are rollingly arranged between the outer ring 1 and the inner ring 4 and contained in the basket-shaped cage 3;

[0027] The outer surface of the roller 2 is a self-aligning roller in the shape of a combination of curves and straight lines, and the raceway of the outer ring 1 is an arc surface; when the bearing is running, there is surface contact between the roller 2 and the raceway of the outer ring 1, and the outer ring 1 has a certain self-aligning function, and can ensure normal operation even under bending conditions;

[0028] Furthermore, the generatrix of the raceway of the inner ring 4 is in a straight line form, and the surface of the roller 2 includes three sections, both ends of which are spherical, and the middle section is in a straight line shape. The middle straight line section contacts the raceway of the inner ring 4, and the contact between the two is a small segment line contact;

[0029] Furthermore, the basket-shaped structure retainer 3 is composed of front and rear double sheets 3.1, and the double sheets 3.1 are supported by a plurality of strip columns, and a plurality of protruding guide truncated cones 3.2 are respectively arranged at relative positions inside the front and rear double sheets 3.1;

[0030] Furthermore, the plurality of strip columns are distributed on the inner diameter edge and the outer diameter edge of the double sheet body 3.1, and each group of strip columns includes two, one is arranged on the outer diameter of the double sheet body 3.1, which is the outer diameter beam 3.3; and the other is arranged on the inner diameter of the double sheet body 3.1 corresponding to the position of the outer diameter beam 3.3, which is the inner diameter beam 3.4;

[0031] Furthermore, each two adjacent groups of strip columns, that is, two outer diameter beams 3.3 and two inner diameter beams 3.4 together form a basket-shaped unit; the rollers 2 are located in the basket-shaped unit; the number of the entire cage basket-shaped units corresponds to the number of the rollers 2;

[0032] Furthermore, a pair of guide truncated cones 3.2 are distributed in each basket-shaped unit, and both ends of the roller 2 are guided by the two guide truncated cones 3.2;

[0033] The cross section of the outer diameter beam 3.3 is a trapezoidal structure, and the outer diameter beam 3.3 forms an outer locking point of the roller 2. The outer diameter beam 3.3 and the roller 2 are interference fit. When installing, the outer diameter beam 3.3 is assembled with the roller 2 to ensure that the roller 2 and the retainer 3 do not come loose when the bearing inner ring 4 is disassembled.

[0034] At the same time, the distance between each two adjacent outer diameter beams 3.3 depends on the diameter of the roller 2, so as to ensure that the roller 2 can be installed from the outer diameter of the cage 3 and ensure that the roller 2 does not fall out;

[0035] Furthermore, the cross-section of the inner diameter beam 3.4 is an inclined trapezoidal structure, the top of the inner diameter beam 3.4 is a straight plane 3.4.1, and the two sides of the straight plane 3.4.1 of the inner diameter beam 3.4 are symmetrical inclined guide surfaces 3.4.2, and the two guide surfaces 3.4.2 are tangent to the roller 2; the two tangent points of the inner diameter beam 3.4 and the roller 2 form support points.

[0036] Furthermore, the inclination angle of the two inclined guide surfaces 3.4.2 of the inner diameter beam 3.4 is 35°.

[0037] The cage 3 in this solution is an integrated cage formed by nitriding and stamping.

[0038] The core design point of the utility model bearing is that it adopts a basket-shaped cage structure, which is equivalent to a full-filled bearing. This structural design is ingenious and convenient; it reduces weight while ensuring performance; the outer diameter beam of the cage and the roller adopt an interference fit, and the inner diameter beam is designed with a guide surface tangent to the roller to ensure the bearing assembly and operation performance, with a simple structure and easy processing.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

Claims

1. A basket-shaped cage fully loaded spherical roller bearing, characterized in that: include: An outer ring, a roller, a retaining frame and an inner ring, wherein the retaining frame is a basket-shaped structure composed of a plurality of strip-shaped columns; the roller is rotatably arranged between the outer ring and the inner ring and is contained in the basket-shaped retaining frame.

2. A basket-shaped cage fully loaded spherical roller bearing according to claim 1, characterized in that: The roller is a self-aligning roller with an outer surface in the shape of a combination of curves and straight lines, and the raceway of the outer ring is an arc surface; when the bearing is running, there is surface contact between the roller and the outer ring raceway.

3. A basket-shaped cage fully loaded spherical roller bearing according to claim 2, characterized in that: The inner ring raceway generatrix is ​​in a straight line form, and the roller surface includes three sections, both ends of which are spherical, and the middle section is straight. The middle straight section contacts the inner ring raceway, and the contact between the two is a small segment line contact.

4. The basket-shaped cage fully loaded spherical roller bearing according to claim 1, characterized in that: The basket-shaped structure retaining frame is composed of a front and a rear double sheet body, and the double sheets are supported by a plurality of groups of strip columns.

5. A basket-shaped cage fully loaded spherical roller bearing according to claim 4, characterized in that: The strip columns are distributed on the inner diameter edge and the outer diameter edge of the double-piece body, and each group of strip columns includes two, one is arranged on the outer diameter of the double-piece body, which is the outer diameter beam; and the other is arranged on the inner diameter of the double-piece body corresponding to the position of the outer diameter beam, which is the inner diameter beam.

6. A basket-shaped cage fully loaded spherical roller bearing according to claim 5, characterized in that: Every two adjacent groups of strip columns, that is, two outer diameter beams and two inner diameter beams together form a basket-shaped unit; the roller is located in the basket-shaped unit.

7. The basket-shaped cage fully loaded spherical roller bearing according to claim 5, characterized in that: The cross section of the outer diameter beam is a trapezoidal structure, the outer diameter beam forms an outer locking point of the roller, and there is an interference fit between the outer diameter beam and the roller.

8. The basket-shaped cage fully loaded spherical roller bearing according to claim 5, characterized in that: The cross section of the inner diameter beam is an inclined trapezoidal structure, the top of the inner diameter beam is a straight plane, and both sides of the straight plane of the inner diameter beam are symmetrical inclined guide surfaces, and the two guide surfaces are tangent to the rollers.

9. A basket-shaped cage fully loaded spherical roller bearing according to any one of claims 1 to 8, characterized in that: The cage is an integrated cage formed by nitriding stamping.

Images