Split stamping retainer and bearing

Abstract

This utility model relates to the field of cylindrical roller bearing technology, specifically to a split stamped cage and bearing, comprising two assembled half-cage assemblies. Each half-cage includes a half-ring, multiple inner locking plates disposed on one side of the inner diameter of the half-ring, and multiple outer locking plates disposed on one side of the outer diameter of the half-ring. The inner and outer locking plates are radially aligned with each other on the half-ring. Each inner locking plate includes a first locking portion and a second locking portion that are radially offset from each other on the half-ring. The two half-stamped cages are axially joined together, and the second locking portion of one half-stamped cage overlaps and connects with the second locking portion of the other half-stamped cage on the radial side of the half-ring. Its lightweight and compact design results in a small space occupied by the stamped cage between the inner and outer rings of the bearing, a large internal space for easy lubrication, easy processing, and low cost.

Description

Technical Field

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

[0002] Cylindrical roller bearings are mainly used in large and medium-sized electric motors, locomotives, and other applications due to their high radial load capacity and low coefficient of friction, making them particularly suitable for applications requiring large radial loads. However, existing cylindrical roller bearings cannot meet the requirements of applications with limited installation space and high limiting speeds. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a split stamped cage and bearing, which can be applied to working conditions with small installation space and high limiting speed. It has a compact structure, is easy to install, is lightweight and has high reliability.

[0004] To achieve the above objectives, on the one hand, the technical solution provided by this utility model is a split stamped retainer, which includes two half retainer assemblies assembled together. The half retainer assembly includes two half stamped retainers. The half stamped retainer includes a half ring, a plurality of inner locking plates disposed on one side of the inner diameter of the half ring, and a plurality of outer locking plates disposed on one side of the outer diameter of the half ring. The inner locking plates and the outer locking plates are radially corresponding to each other on the half ring.

[0005] The inner locking plate includes a first locking portion and a second locking portion that are radially offset from each other in the semi-ring. The two semi-stamped retainers are axially connected, and the second locking portion of one semi-stamped retainer overlaps and connects with the second locking portion of the other semi-stamped retainer in the radial direction of the semi-ring.

[0006] Furthermore, one end of the semi-ring is provided with a connecting protrusion, the connecting protrusion has a locking point, and the other end of the semi-ring has a locking hole.

[0007] Furthermore, the outer diameter of the connecting protrusion is smaller than the outer diameter of the semi-ring, and the inner diameter of the connecting protrusion is larger than the inner diameter of the semi-ring.

[0008] Furthermore, in one of the two half-stamped retainers, the second locking portion of the half-stamped retainer is closer to the center of the half-ring relative to the first locking portion; in the other half-stamped retainer, the second locking portion is farther from the center of the half-ring relative to the first locking portion.

[0009] Furthermore, two inner locking plates are respectively provided close to both ends of the semi-ring, and multiple inner locking plates are evenly distributed on one side of the inner diameter of the semi-ring.

[0010] Furthermore, two outer locking plates are respectively provided close to both ends of the semi-ring, and multiple outer locking plates are evenly distributed on one side of the outer diameter of the semi-ring.

[0011] Furthermore, the dimensions of the inner locking plate and the outer locking plate are determined based on the roller diameter.

[0012] On the other hand, the technical solution provided by this utility model is a bearing, which includes the above-mentioned split stamped cage.

[0013] The advantages of this utility model are: it adopts a lightweight and compact design, the stamped cage occupies less space between the inner and outer rings of the bearing, the stamped cage has a large internal space, which facilitates lubrication, is easy to process, and has a low cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a split stamped cage in one embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of one of the semi-stamped retainers in one embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of another half-stamped retainer in one embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of one of the half-cage assemblies in one embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of another half-cage assembly in one embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the bearing structure in one embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of one of the semi-cage assemblies equipped with rollers in one embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of another semi-cage assembly equipped with rollers in one embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of a split stamped cage equipped with rollers in one embodiment of the present invention;

[0023] Figure 10 This is a schematic diagram of the riveting fixture in one embodiment of the present invention;

[0024] Figure 11 middle Figure 4 A schematic diagram of the structure of part A;

[0025] Figure 12 This is a schematic diagram of the structure of the ring in one embodiment of the present invention;

[0026] Figure 13 This is a schematic diagram of the riveting module in one embodiment of the present invention;

[0027] Figure 14 This is a diagram showing the usage state of the riveting fixture in one embodiment of this utility model;

[0028] Figure 15 This is a top view of the riveting fixture in one embodiment of the present invention;

[0029] Figure 16 for Figure 15 Cross-sectional view of CC in the middle;

[0030] Figure 17 A schematic diagram of the raw materials for manufacturing split stamped cages;

[0031] Figure 18 This is a schematic diagram of steel plate bending and forming.

[0032] Figure 19 A schematic diagram of the outer diameter locking point stamping process;

[0033] Figure 20 A schematic diagram of the stamping process for the inner diameter pocket and locking point;

[0034] In the picture:

[0035] 100. Semi-cage assembly; 110. Semi-stamped cage; 111. Semi-ring; 1111. Connecting protrusion; 1112. Locking point; 1113. Locking hole; 112. Inner locking plate; 1121. First locking part; 1122. Second locking part; 113. Outer locking plate.

[0036] 200. Roller

[0037] 10. Ring, 11. Inner diameter surface, 12. End face, 13. Groove.

[0038] 20. Lifting assembly; 21. Bracket; 22. Fixture; 23. Guide sleeve; 24. Lifting drive device.

[0039] 30. Riveting module; 31. Module body; 32. Telescopic rod; 33. Telescopic drive device; 34. Rivet head. Detailed Implementation

[0040] 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.

[0041] See Figures 1-3 A split-type stamped retainer is shown, comprising two half-retainer assemblies 100 assembled together. Each half-retainer assembly 100 includes two half-stamped retainers 110. Each half-stamped retainer 110 includes a semi-ring 111, a plurality of inner locking plates 112 disposed on one side of the inner diameter of the semi-ring 111, and a plurality of outer locking plates 113 disposed on one side of the outer diameter of the semi-ring 111. The inner locking plates 112 and outer locking plates 113 are radially aligned with each other on the semi-ring 111. Each inner locking plate 112 includes a first locking portion 1121 and a second locking portion 1122 that are radially offset from each other on the semi-ring 111. The two half-stamped retainers 110 are axially joined, and the second locking portion 1122 of one half-stamped retainer 110 overlaps and connects with the second locking portion 1122 of the other half-stamped retainer 110 radially on the semi-ring 111. See details. Figure 5 In this embodiment, the second locking portion 1122 of one of the two semi-stamped retainers 110 is closer to the center of the semi-ring 111 relative to the first locking portion 1121, i.e., offset radially inward; the second locking portion 1122 of the other semi-stamped retainer 110 is farther from the center of the semi-ring 111 relative to the first locking portion 1121, i.e., offset radially outward. Specifically, in this embodiment, the two second locking portions 1122 are connected by riveting, i.e., the two plates are pressed together by external force to make the two plates fit together. In addition to the riveting method in this embodiment, a rivet connection can also be used, i.e., a hole is drilled in the second locking portion 1122, then a rivet is inserted into the hole, and finally a special riveting tool is used to press the rivet to deform it and fill the gap, thereby achieving a firm connection.

[0042] The aforementioned split stamped cage is composed of two half-cage assemblies 100 connected together. Each half-cage assembly 100 includes two riveted half-stamped cages 110. Compared to ordinary cages that use solid beams to form pockets, the aforementioned split stamped cage has multiple inner locking plates 112 and outer locking plates 113, with open spaces between the inner locking plates 112 and outer locking plates 113. This satisfies the function of locking the rolling elements from both the inside and outside, while also reducing the overall weight of the cage. Furthermore, after the two half-stamped cages 110 are riveted together, the second locking portion 1122 of the outer locking plate 113 overlaps radially, with reinforcement of the cage locking point only in the middle of the roller 200. This ensures adequate containment of the roller 200 and further reduces the overall weight of the cage. In summary, the split stamped cage adopts a lightweight and compact design, occupies less space between the inner and outer rings of the bearing, has a large internal space for easy lubrication, is easy to manufacture, and has a lower cost.

[0043] The semi-cage assembly 100 is equipped with an outer locking plate 113, which provides an outer diameter locking point. The semi-cage assembly 100 also has an inner locking plate 112, which provides an inner diameter locking point. This effectively prevents the roller 200 from falling out from either the outer or inner diameter and ensures that the roller is not clamped in its natural state. Compared to a cage structure with a perforated beam, this design is lighter and more compact. The non-locking point connection at the inner diameter of the pocket only needs to be large enough for riveting installation; the size does not need to be particularly large to reduce weight and meet usage requirements. The locking point size is determined based on the roller diameter. The diameter at the locking point is generally smaller than the roller diameter, and can be approximately 98% of the roller diameter, but can be fine-tuned according to actual application conditions.

[0044] In one embodiment, a connecting protrusion 1111 is provided at one end of the semi-ring 111, and a locking point 1112 is provided on the connecting protrusion 1111. A locking hole 1113 is provided at the other end of the semi-ring 111. The semi-cage assembly 100 is designed as a male-female mating type, with one side protruding half of the end face and protruding locking points 1112 on the outer sides of both ends; the other side is designed as a female mating type, with round holes at both ends as locking holes 1113 that mate with the locking points 1112; during assembly, the connecting protrusion 1111 of one semi-cage assembly 100 is inserted into the inner side of the semi-ring 111 of the other semi-cage assembly 100, the protruding locking point 1112 mates with the locking hole 1113, and then the locking point 1112 is just locked into the locking hole 1113.

[0045] In one embodiment, the outer diameter of the connecting protrusion 1111 is smaller than the outer diameter of the semi-ring 111, and the inner diameter of the connecting protrusion 1111 is larger than the inner diameter of the semi-ring 111.

[0046] The two sides of the semi-cage assembly 100 are asymmetrical. When the two semi-stamped cages 110 are connected, the connecting male and female parts are distributed in the two semi-cage assemblies 100 respectively. In addition, the connection is safe and reliable. When disassembling, the connecting protrusion 1111 of the semi-cage assembly 100 is pressed inward and pulled outward to disassemble, which is convenient for assembly and disassembly.

[0047] In one embodiment, two inner locking plates 112 are respectively provided at both ends of the semi-ring 111, and the multiple inner locking plates 112 are evenly distributed on one side of the inner diameter of the semi-ring 111.

[0048] In one embodiment, two outer locking plates 113 are respectively provided at both ends of the semi-ring 111, and multiple outer locking plates 113 are evenly distributed on one side of the outer diameter of the semi-ring 111.

[0049] In one embodiment, the dimensions of the inner locking plate 112 and the outer locking plate 113 are determined based on the roller diameter.

[0050] like Figure 6 As shown, the bearing includes the aforementioned split stamped cage.

[0051] See Figures 7-9 This utility model also provides a bearing assembly method as described above, the specific steps of which include:

[0052] Step S100: Rivet the two semi-stamped cages 110 together to form a semi-cage assembly 100, as shown below. Figure 4 As shown.

[0053] In step S200, the roller 200 is pressed in through the outer diameter of the semi-cage assembly 100 to form a semi-cage assembly 100 containing the roller 200, as shown below. Figure 7 As shown;

[0054] Step S300, repeating steps S100 and S200, assemble another semi-cage assembly 100 containing rollers 200, as follows. Figure 5 and Figure 8 As shown;

[0055] Step S400: Assemble the two semi-cage assemblies 100, each equipped with rollers 200, by means of a mating connection. Figure 9 As shown.

[0056] See Figures 17-20 In the assembly methods of the two bearings described above, step S100 requires the fabrication of a semi-stamped cage 110. The raw material for the stamped cage is steel plate, and different thicknesses of steel plate are selected depending on the design. First, the steel plate is stamped into the following shapes according to the two different semi-stamped cage forms: Figure 17The steel plate is initially bent and shaped according to the dimensions and structural forms of two different semi-stamped cages, forming a semi-ring, an inner bent portion of the semi-ring, and an outer bent portion of the semi-ring (e.g., Figure 18 (as shown), and then the outer diameter of the cage is formed by stamping (as shown). Figure 19 (As shown) Multiple outer locking plates are made, and then the pocket size at the inner diameter of the cage is machined (as shown). Figure 20 (As shown) Multiple inner locking plates are made, and then the locking points and locking holes for installation and matching at the connection of the semi-stamped retainer are processed. The semi-stamped retainer 110 is easy to process and has a low cost.

[0057] Additionally, see Figures 10-16 It should be noted that in the above two bearing assembly methods, the riveting in step S100 is carried out using a riveting fixture, which includes a ring 10, a lifting assembly 20, and a riveting module 30. The riveting module 30 is set on the lifting assembly 20, and the lifting assembly 20 drives the riveting module 30 to rise and fall. The ring 10 is set independently of the riveting module 30 and the lifting assembly 20, and cooperates with the two half-stamped retainers 110 to be assembled.

[0058] See Figure 10 and Figure 11 Specifically, the lifting assembly 20 includes a bracket 21 and a lifting drive device 24 fixed on the bracket 21; in a specific embodiment, the lifting drive device 24 is a first hydraulic cylinder. The riveting module 30 includes a module body 31 disposed at the output end of the lifting drive device 33, a plurality of telescopic rods 32 slidably and telescopically disposed on the module body 31, a telescopic drive device 33 connected to one end of the telescopic rods 32, and a riveting head 34 connected to the other end of the telescopic rods 32. The telescopic drive device 33 drives the telescopic rods 32 and the riveting head 34 to move radially along the ring 10, and provides riveting force at the position where the two inner locking plates 112 overlap on the inner side of the inner locking plate 112. The specific value of the riveting force varies depending on the material used, and those skilled in the art can calculate it based on empirical formulas. In addition, in one embodiment, the telescopic drive device 33 is a second hydraulic cylinder, and all telescopic drive devices 33 can be controlled to move synchronously through a hydraulic control system, thereby driving multiple riveting heads 34 to move radially synchronously, further improving processing efficiency. The ring 10 is disposed between the half-rings 111 of the two half-stamped retainers 110, and the inner diameter surface 11 of the ring 10 is in contact with the outer surface of the inner locking plate 112. Specifically, the inner diameter surface 110 is in contact with the outer second locking part 1122.

[0059] The aforementioned riveting fixture is designed specifically for the special structure of the split stamped retainer. It is equipped with a lifting component 20 to drive the riveting module 30 to rise and fall as a whole, thereby simultaneously adjusting the height of the multiple rivet heads 34 on it so that the whole assembly can extend into one side of the inner diameter of the split stamped retainer. Then, the ring 10, in conjunction with the multiple rivet heads 34, stamps the multiple rivet points of the split stamped retainer, which facilitates the riveting process, thereby improving the processing efficiency and ensuring the tightness and reliability of the riveting.

[0060] See Figure 12 and Figure 16 In one embodiment, the two semi-stamped retainers 110 are fixed by a connecting assembly, and the end face 12 of the ring 10 has a groove 13 for accommodating the connecting assembly. Specifically, in one embodiment, one end face of the ring 10 has two grooves 13, which are 180° apart. In a specific configuration, the grooves 13 correspond to the positions where the locking point 1112 and the locking hole 1113 mate, leaving space for the connecting protrusion 1111.

[0061] See Figure 10 and Figure 11 In one embodiment, the bracket 21 is connected to a fixing frame 22, and the fixing frame 22 is connected to a guide sleeve 23. The guide sleeve 23 is slidably fitted onto the outside of the module body 31. With this configuration, when the lifting drive device 24 drives the module body 31 to move up and down, the guide sleeve 23 can guide the module body 31 to avoid deviation.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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 split-type stamped cage, characterized in that: It includes two half-cage assemblies assembled together, the half-cage assembly comprising two half-stamped cages, The semi-stamped retainer includes a semi-ring, a plurality of inner locking plates disposed on one side of the inner diameter of the semi-ring, and a plurality of outer locking plates disposed on one side of the outer diameter of the semi-ring, wherein the inner locking plates and the outer locking plates are radially corresponding to each other on the semi-ring. The inner locking plate includes a first locking portion and a second locking portion that are radially offset from each other in the semi-ring. The two semi-stamped retainers are axially connected, and the second locking portion of one semi-stamped retainer overlaps and connects with the second locking portion of the other semi-stamped retainer in the radial direction of the semi-ring.

2. The split-type stamped retainer according to claim 1, characterized in that: One end of the semi-ring is provided with a connecting protrusion, the connecting protrusion has a locking point, and the other end of the semi-ring has a locking hole.

3. A split-type stamped retainer according to claim 2, characterized in that: The outer diameter of the connecting protrusion is smaller than the outer diameter of the semi-ring, and the inner diameter of the connecting protrusion is larger than the inner diameter of the semi-ring.

4. A split-type stamped retainer according to claim 1, characterized in that: In one of the two half-stamped retainers, the second locking portion of the half-stamped retainer is closer to the center of the half-ring relative to the first locking portion; in the other half-stamped retainer, the second locking portion is farther from the center of the half-ring relative to the first locking portion.

5. A split-type stamped retainer according to claim 1, characterized in that: Two inner locking plates are respectively provided at both ends of the semi-ring, and multiple inner locking plates are evenly distributed on one side of the inner diameter of the semi-ring.

6. A split-type stamped retainer according to claim 1, characterized in that: Two outer locking plates are respectively provided at both ends of the semi-ring, and multiple outer locking plates are evenly distributed on one side of the outer diameter of the semi-ring.

7. The split stamped cage according to any one of claims 1-6, characterized in that: The dimensions of the inner and outer locking plates are determined based on the roller diameter.

8. A bearing, characterized in that: Includes a split stamped cage as described in any one of claims 1-6.

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