A tapered roller bearing and cage

Abstract

The utility model relates to bearing technical field, concretely is a kind of tapered roller bearing and cage, including rolling element, cage assembly, outer ring, inner ring;The rolling element is several;The cage assembly is provided with several pockets, and several rolling elements are placed in several pockets;The inner ring is provided with double flange, and the double flange limits the rolling element in the raceway of the inner ring;The cage assembly is arranged between the inner ring and the outer ring.It is optimized to design the cage structure, develops a kind of high-strength impact-resistant tapered roller bearing cage structure, by changing cage structure, replacing material and so on Measure, sufficiently improve the rigidity of cage, maintain the strength of roller, reduce manufacturing cost, meet the use demand of cylindrical roller bearing in the field of large impact, high load mechanical industry.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a tapered roller bearing and its cage. Background Technology

[0002] Tapered roller bearings are widely used in mining machinery, metallurgical equipment, and heavy equipment industries because they can withstand combined radial and axial loads, with radial loads being the primary component. Conventional tapered roller bearings often use stamped steel cages. However, when the bearing size increases to medium to large sizes, the manufacturing cost of stamped cages increases significantly. Furthermore, when the bearing is subjected to high impact and high load conditions, the inherent strength of the stamped steel cage is insufficient to meet the requirements. Currently, a common solution is to make the rolling elements hollow, i.e., drilling through holes along the roller axis and then connecting two cage retaining rings with pins to form the cage. While this solution effectively replaces the steel cage structure, the structural strength is somewhat reduced due to the through holes in the rollers. Utility Model Content

[0003] In view of the deficiencies of the prior art, this utility model provides a tapered roller bearing and cage. It optimizes the cage structure and develops a high-strength, impact-resistant tapered roller bearing cage structure. By changing the cage structure and replacing materials, the rigidity of the cage is significantly improved, the strength of the rollers is maintained, and the manufacturing cost is reduced, thus meeting the needs of the high-impact, high-load machinery industry for cylindrical roller bearings.

[0004] To achieve the above objectives, the present invention provides a tapered roller bearing, comprising rolling elements, a cage assembly, an outer ring, and an inner ring; the rolling elements are a plurality of each other; the cage assembly is provided with a plurality of pockets, and the plurality of rolling elements are placed in the plurality of pockets; the inner ring is provided with double flanges, the double flanges confining the rolling elements within the raceway of the inner ring; the cage assembly is disposed between the inner ring and the outer ring.

[0005] Furthermore, the double baffle includes a large baffle and a small baffle, the large baffle is in contact with one end of the rolling element, and the small baffle is in contact with the other end of the rolling element.

[0006] Furthermore, the rolling element is a tapered roller.

[0007] A cage for a tapered roller bearing includes the aforementioned cage assembly; the cage assembly is provided with a cage seat and a cage cover, the cage seat and the cage cover being fixed together by connecting screws.

[0008] Furthermore, the outer diameter surface of the retainer is provided with an annular oil groove.

[0009] Furthermore, there are two annular oil grooves.

[0010] Furthermore, the cage seat is provided with a tapered arc pocket structure that matches the corners of the rolling element.

[0011] Furthermore, the cage base and the cage cover are made of copper alloy.

[0012] The beneficial effects of this utility model are as follows: This application optimizes the cage structure design and develops a high-strength, impact-resistant tapered roller bearing cage structure. By changing the cage structure and replacing materials, the rigidity of the cage is significantly improved, the strength of the rollers is maintained, and the manufacturing cost is reduced, thus meeting the needs of the high-impact, high-load machinery industry for cylindrical roller bearings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 100, rolling element; 200. Cage assembly; 210. Cage seat; 211. Annular oil groove; 220. Cage cover; 230. Connecting screw. 300, outer ring, 400, Inner ring; 410, Double edge; 411, Large edge; 412, Small edge. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] like Figure 1 As shown, one embodiment of this utility model discloses a tapered roller bearing, including rolling elements 100, a cage assembly 200, an outer ring 300, and an inner ring 400; there are a plurality of rolling elements 100; the cage assembly 200 is provided with a plurality of pockets, and the plurality of rolling elements 100 are placed in the plurality of pockets; the inner ring 400 is provided with double retaining edges 410, which confine the rolling elements 100 within the raceway of the inner ring 400; the cage assembly 200 is disposed between the inner ring 400 and the outer ring 300.

[0016] In one embodiment, the double baffle 410 includes a large baffle 411 and a small baffle 412. The large baffle is in contact with one end of the rolling element 100, and the small baffle 412 is in contact with the other end of the rolling element 100.

[0017] In one embodiment, the rolling element 100 is a tapered roller.

[0018] Preferably, a cage for a tapered roller bearing includes a cage assembly 200; the cage assembly 200 is provided with a cage seat 210 and a cage cover 220, and the cage seat 210 and the cage cover 220 are fixed together by connecting screws 230.

[0019] In one embodiment, an annular oil groove 211 is provided on the outer diameter surface of the retainer 210.

[0020] In one embodiment, there are two annular oil grooves 211.

[0021] In one embodiment, the retainer 210 is provided with a tapered arc pocket structure that matches the corners of the rolling element 100.

[0022] In one embodiment, the cage base 210 and the cage cover 220 are made of copper alloy.

[0023] It should be noted that: 1. The cage consists of a cage base 210 and a cage cover 220, which are fastened by connecting screws 230. The cage base 210 is machined by machining. Compared with stamped cages, this method saves the cost of stamping molds, greatly reduces processing costs, and further improves dimensional accuracy. 2. This structure uses copper alloy material, which is not limited by the thickness of standard series steel plates. The cage thickness can be reasonably matched according to the roller size, which greatly increases the enclosure area of ​​the cage pocket for the rolling element 100. Combined with the good toughness and fatigue resistance of copper alloy, when the bearing is subjected to strong impact and high load, this type of cage can effectively fix the running state of the roller, prevent the roller from falling off, and maintain the overall rigidity and operational reliability of the bearing. 3. An annular oil groove 211 is provided on the outer diameter surface of the cage seat 210 to guide the lubricant into the cage pocket, which facilitates the rapid establishment of a lubricating oil film between the friction pairs. In addition, the self-lubricating properties of the copper alloy material significantly reduce the wear between the roller and the cage pocket, thus extending the bearing service life to a certain extent. 4. The cage seat 210 adopts a tapered arc pocket structure that matches the roller cone angle. This structure facilitates installation and avoids interference deformation between the pocket and the rolling element 100 during cage installation, effectively protecting the pocket accuracy.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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.

[0025] 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A tapered roller bearing, characterized in that: It includes several rolling elements; a cage assembly with several pockets in which the rolling elements are placed; an outer ring; an inner ring with double flanges that confine the rolling elements within the raceways of the inner ring; and the cage assembly is disposed between the inner ring and the outer ring.

2. A tapered roller bearing according to claim 1, characterized in that: The double retaining edge includes a large retaining edge and a small retaining edge. The large retaining edge is in contact with one end of the rolling element, and the small retaining edge is in contact with the other end of the rolling element.

3. A tapered roller bearing according to claim 1, characterized in that: The rolling element is a tapered roller.

4. A cage for a tapered roller bearing, characterized in that: Includes a cage assembly as described in any one of claims 1-3; the cage assembly is provided with a cage base and a cage cover, the cage base and the cage cover being fixed together by connecting screws.

5. The cage of a tapered roller bearing according to claim 4, characterized in that: The outer diameter surface of the cage base is provided with an annular oil groove.

6. The cage of a tapered roller bearing according to claim 5, characterized in that: There are two annular oil grooves.

7. The cage of a tapered roller bearing according to claim 4, characterized in that: The cage seat is provided with a tapered arc pocket structure that matches the corners of the rolling elements.

8. The cage of a tapered roller bearing according to claim 4, characterized in that: The cage base and the cage cover are made of copper alloy.

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