A split type tapered roller bearing cage

Abstract

The utility model provides a kind of combined split type tapered roller bearing cage, including cage unit;Cage unit at least has two;Each cage unit includes several complete pockets and two half pockets respectively located on the two sides of cage unit along circumferential direction, two half pockets on adjacent two cage units jointly constitute a complete pocket;Matching self-locking structure is equipped between adjacent two cage units, and multiple cage units are connected into complete cage along circumferential direction by self-locking structure;Multiple cage units can be quickly assembled into a stable whole by self-locking structure, so that adjacent half pocket is combined into complete pocket, thereby avoiding wear and tear and rupture caused by unit collision in traditional split cage during operation.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and in particular to a combined split tapered roller bearing cage. Background Technology

[0002] Tapered roller bearings are widely used in mechanical transmission systems, and their cages are used to isolate and guide the movement of the rollers. Currently, most common cages are of a single, integral structure made of metal, which presents the following problems: 1. The integral structure is inconvenient to install: each roller must be installed individually during installation or replacement, which is a cumbersome process; 2. High material costs and complex processing: The metal cage processing technology is complex and the cost is relatively high; 3. Lack of modular design: The entire cage needs to be replaced when damaged, resulting in high maintenance costs; 4. No self-locking function: It is prone to loosening under high-speed or vibrating conditions.

[0003] While there are designs for separate cages in existing technologies, most do not achieve a reliable self-locking structure, and there is still room for optimization in terms of material selection and group connection methods. Utility Model Content

[0004] In view of the above problems, the purpose of this application is to provide a combined split tapered roller bearing cage, which enables multiple cage units to be quickly assembled into a stable whole through a self-locking structure, so that adjacent half pockets are combined into a complete pocket, thereby avoiding wear and breakage caused by unit collisions in traditional split cages during operation.

[0005] To achieve some or all of the above objectives or other objectives, this application provides the following technical solution: a combined split tapered roller bearing cage, comprising: cage units; at least two cage units; each cage unit includes several complete pockets and two half pockets located on both sides of the cage unit along the circumferential direction, with two adjacent half pockets on two adjacent cage units forming a complete pocket; a matching self-locking structure is provided between two adjacent cage units, and multiple cage units are connected along the circumferential direction through the self-locking structure to form a complete cage.

[0006] Furthermore, the self-locking structure is a snap-fit ​​structure or a tenon-and-groove structure.

[0007] Furthermore, the buckle structure includes a first buckle and a second buckle disposed at the interface between two adjacent retainer units. The first buckle is disposed on the side of a half pocket, and the second buckle is disposed on the side of an adjacent half pocket. The first buckle and the second buckle are fastened together.

[0008] Furthermore, four snap-fit ​​structures are provided between two adjacent cage units; four No. 1 snap-fits or four No. 2 snap-fits are provided on the two sides of the semi-pocket, and the two No. 1 snap-fits or two No. 2 snap-fits on each side are mirror images of each other.

[0009] Furthermore, the tapered rollers in two adjacent complete pockets on the complete cage are inserted from opposite directions.

[0010] Furthermore, the cage unit is made of engineering plastic.

[0011] Furthermore, each of the cage units includes three full pockets and two half pockets.

[0012] Furthermore, the complete cage is composed of twelve cage units connected together.

[0013] Furthermore, the inner side of the complete pocket is provided with a roller receiving groove that matches the shape of the tapered roller.

[0014] Furthermore, a positioning structure is provided between adjacent cage units to ensure overall concentricity after installation.

[0015] Compared with existing technologies, the advantages of this utility model are as follows: This utility model's modular design for a combined split-type tapered roller bearing cage allows for the rapid assembly of multiple cage units into a stable whole through a self-locking structure. This enables adjacent half-pockets to combine into a complete pocket, thereby avoiding wear and breakage caused by unit collisions in traditional split cages during operation, significantly improving service life and reliability. Simultaneously, its integrated structure allows for lightweight beam design, reducing material costs and product weight, while also ensuring ease of assembly and maintenance, thus optimizing performance and economic benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the complete cage structure of this utility model; Figure 2 for Figure 1 Enlarged schematic diagram; Figure 3 This is a structural diagram of the connection between adjacent cage units; Figure 4 This is a structural schematic diagram of the side of the cage unit; Figure 5 A schematic diagram of the structure when adjacent cage units are connected; Figure 6 A schematic diagram of the complete cage and rollers; Figure 7 This is a schematic diagram of the bearing structure; Figure 8 for Figure 7 A sectional view; In the diagram: 1. Cage unit, 2. Full pocket, 3. Half pocket, 4. Snap-fit ​​structure, 5. Snap-fit ​​No. 1, 6. Snap-fit ​​No. 2, 7. Tapered roller. Detailed Implementation

[0017] To make the structure and function of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0018] See appendix Figure 1-8 A modular split tapered roller bearing cage includes: a cage unit 1; at least two cage units 1; each cage unit 1 includes several complete pockets 2 and two half pockets 3 located on both sides of the cage unit 1 along the circumferential direction, and two adjacent half pockets 3 on two adjacent cage units 1 together form a complete pocket 2; a matching self-locking structure is provided between two adjacent cage units 1, and multiple cage units 1 are connected along the circumferential direction through the self-locking structure to form a complete cage, and the cage units can be quickly assembled.

[0019] Based on the above technical solution, the adjacent retainer units in this utility model are connected by a locking mechanism to combine two half pockets into a complete pocket. When starting or stopping, the complete retainer rotates as a whole, which completely avoids wear and breakage caused by collisions and greatly improves service life and operational reliability.

[0020] Traditional plastic split cages are sometimes split into two parts in the middle of the crossbeam. The cages move relative to each other, which can cause adjacent cages to collide when starting or stopping. After long-term operation, the edges may break, leading to failure.

[0021] This utility model forms a stable whole due to its self-locking structure. Under the premise of ensuring strength, the crossbeam adopts a thinner and lighter structure, thereby significantly improving material utilization, reducing production costs and product weight, and combining economic benefits and performance advantages.

[0022] Traditional plastic split cages are sometimes divided into two parts in the middle of the crossbeam. The edge crossbeams of the cage unit are designed to be thicker to avoid premature failure. Since plastic cages are mostly produced by injection molding of special plastics, the weight and material cost are not low.

[0023] The self-locking structure is either a snap-fit ​​structure or a tenon-groove structure.

[0024] The buckle structure 4 includes a first buckle 5 and a second buckle 6 disposed at the interface between two adjacent retainer units 1. The first buckle 5 is disposed on the side of a half pocket 3, and the second buckle 6 is disposed on the side of an adjacent half pocket 3. The first buckle 5 and the second buckle 6 are fastened together.

[0025] The first buckle 5 includes a first cantilever extending perpendicularly to the side of the half pocket 3, and an L-shaped hook formed at the end of the first cantilever; the second buckle 6 includes a second cantilever extending perpendicularly to the side of the adjacent half pocket 3, and an L-shaped receiving groove formed at the end of the second cantilever; when adjacent cage units are engaged, the L-shaped hook of the first buckle 5 is embedded and fastened in the L-shaped receiving groove of the second buckle 6, realizing the interlocking connection of the two adjacent units; an external bearing raceway is added for auxiliary positioning to fix it.

[0026] Four snap-fit ​​structures 4 are provided between two adjacent retainer units 1; four No. 1 snap-fits 5 or four No. 2 snap-fits 6 are provided on the two sides of the semi-pocket 3, and the two No. 1 snap-fits 5 or two No. 2 snap-fits 6 on each side are mirror images of each other.

[0027] The tapered rollers 7 in the two adjacent complete pockets 2 of the complete cage are inserted from opposite directions, forming a self-locking effect. This design ensures that the complete cage is always in the correct position in the bearing. Whether it is in the upper or lower part of the bearing, it is stably supported and guided by the rolling elements, which effectively prevents improper contact between the cage and the inner and outer raceways and ensures smooth operation.

[0028] The cage unit 1 is made of engineering plastics, such as nylon and PEEK, which gives the cage unit good wear resistance and self-lubrication.

[0029] Each of the cage units 1 includes three full pockets 2 and two half pockets 3.

[0030] The complete cage is composed of twelve cage units 1 connected together.

[0031] The inner side of the complete pocket 2 is provided with a roller receiving groove that matches the shape of the tapered roller 7; the force distribution is optimized, making it suitable for medium and high speed tapered roller bearings.

[0032] A positioning structure is also provided between adjacent cage units 1 to ensure overall concentricity after installation.

[0033] The structure ensures overall concentricity after installation: The arc-shaped cage design takes into account processing errors during design and manufacturing. The interlocking buckles ensure uniform distribution in the circumferential direction. In addition, the mutual difference of the three cage pockets used for self-locking and the cooperation of the inner ring raceway ensure the overall concentricity of the cage unit. The three self-locking pockets serve two purposes: firstly, to form a structure for guiding the rolling elements, and secondly, to limit the installation.

[0034] Installation method: First, install 3 rolling elements into each cage unit and place it next to the mounting table. After aligning the inner ring, install the cage units one by one, locking them in place. Then, insert all the rolling elements circumferentially into the pockets between adjacent cages. This completes the installation of the inner ring assembly.

[0035] This utility model discloses a modular split tapered roller bearing cage. Through its split structure design, it enables modular installation and replacement, improving maintenance convenience. The self-locking connection mechanism ensures that the complete cage does not loosen during operation, enhancing reliability. The application of engineering plastic materials reduces weight and cost, while improving corrosion resistance and processability.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A combined split-type tapered roller bearing cage, characterized in that: include: Cage unit (1); there are at least two cage units (1); each cage unit (1) includes several complete pockets (2) and two half pockets (3) located on both sides of the cage unit (1) along the circumferential direction, and the two adjacent half pockets (3) on two adjacent cage units (1) together form a complete pocket (2); a matching self-locking structure is provided between two adjacent cage units (1), and multiple cage units (1) are connected in the circumferential direction through the self-locking structure to form a complete cage; The self-locking structure is a snap-fit ​​structure (4) or a tenon-groove structure; The buckle structure (4) includes a first buckle (5) and a second buckle (6) disposed at the interface between two adjacent retainer units (1). The first buckle (5) is disposed on the side of a half pocket (3), and the second buckle (6) is disposed on the side of an adjacent half pocket (3). The first buckle (5) and the second buckle (6) are fastened together. Four snap-fit ​​structures (4) are provided between two adjacent cage units (1); four No. 1 snap-fits (5) or four No. 2 snap-fits (6) are provided on the two sides of the half pocket (3), and the two No. 1 snap-fits (5) or two No. 2 snap-fits (6) on each side are mirror images of each other.

2. The combined split-type tapered roller bearing cage according to claim 1, characterized in that: The tapered rollers (7) in the two adjacent complete pockets (2) on the complete cage are inserted from opposite directions.

3. The combined split-type tapered roller bearing cage according to claim 1, characterized in that: The cage unit (1) is made of engineering plastic.

4. The combined split-type tapered roller bearing cage according to claim 1, characterized in that: Each of the cage units (1) includes three full pockets (2) and two half pockets (3).

5. A combined split-type tapered roller bearing cage according to claim 1, characterized in that: The complete cage is composed of twelve cage units (1) connected together.

6. A combined split-type tapered roller bearing cage according to claim 1, characterized in that: The inner side of the complete pocket (2) is provided with a roller receiving groove that matches the shape of the tapered roller (7).

7. A combined split-type tapered roller bearing cage according to claim 1, characterized in that: The adjacent cage units (1) are also provided with a positioning structure to ensure overall concentricity after installation.

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