A tapered roller cage
By introducing a limiting part and an oil reservoir/guide groove structure into the tapered roller cage, the problem of rollers easily falling off is solved, achieving stable installation and lubrication effect, improving assembly efficiency, reducing friction, and simplifying the installation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SLING AUTOMOBILE BEARING CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-26
AI Technical Summary
During the assembly of tapered roller bearings, the rollers are prone to falling out of the cage, resulting in low assembly efficiency and increased costs.
A tapered roller cage is designed, which adopts a limiting part and a limiting protrusion structure, combined with the setting of an oil reservoir and an oil guide groove, to ensure that the rollers are stably installed in the cage, and the lubrication effect is increased through the clearance fit structure.
It effectively prevents rollers from falling off, improves assembly efficiency, reduces contact friction, increases lubrication, and simplifies the installation process.
Smart Images
Figure CN224414143U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of bearing cages, and particularly to a tapered roller cage. Background Technology
[0002] Tapered roller bearings, with their excellent load-bearing capacity, can withstand both radial and axial loads simultaneously. They are widely used in many industrial fields such as automobile manufacturing, machining, and aerospace equipment, and are a core component to ensure the stable operation of various rotating parts.
[0003] In the assembly process of tapered roller bearings, a long-standing and critical problem that urgently needs to be solved seriously affects assembly efficiency and quality. This problem stems from the characteristics of the assembly process for tapered roller bearings, namely, that the rollers and cage must be assembled first, and then the combined assembly must be installed into the bearing housing. However, in these two key assembly steps, the rollers are extremely prone to detaching from the cage.
[0004] During the processes of installing the rollers into the cage and then installing the cage with the assembled rollers into the bearing housing, the rollers are in a relatively free state due to the lack of a stable constraint between the rollers and the cage. Even the slightest deviation in movement by the operator during installation, or slight external vibration, can cause the rollers to deviate from their intended position and fall out of the cage.
[0005] This forced assembly work to be repeatedly interrupted, increasing assembly time and costs, and resulting in a significant reduction in overall assembly efficiency. Utility Model Content
[0006] To reduce the difficulty of assembling rollers, this application provides a tapered roller cage.
[0007] This application provides a tapered roller cage, which adopts the following technical solution:
[0008] A tapered roller cage includes a first ring body, a second ring body, and a plurality of connecting beams connecting the first ring body and the second ring body, wherein pockets are formed around the first ring body, the second ring body, and any two adjacent connecting beams.
[0009] The connecting beam has a protruding limiting part at one end facing the center, and the limiting part has at least one limiting protrusion; at the same height, the minimum distance between two adjacent limiting protrusions is less than the diameter of the tapered roller, and the distance between the limiting protrusion and the cage axis is less than the distance between the axis of the tapered roller and the cage axis.
[0010] In one embodiment: the end faces of the connecting beam and the limiting part facing the pocket are arranged in a plane, and the end faces of the connecting beam and the limiting part located on the same side of the pocket are arranged at an angle.
[0011] In one embodiment: when the tapered roller is installed in the pocket, the sidewall of the tapered roller can only simultaneously abut against the interior of two adjacent connecting beams or can only simultaneously abut against the interior of two adjacent limiting parts.
[0012] In one embodiment: two limiting protrusions are provided, and the two limiting protrusions are respectively located at both ends of the connecting beam.
[0013] In one embodiment: the limiting part is provided with an oil storage tank, and the two ends of the oil storage tank pass through the first ring and the second ring respectively.
[0014] In one embodiment, the width of the oil storage tank gradually increases along the direction away from the connecting beam.
[0015] In one embodiment: the end of the connecting beam facing the center is provided with an oil guide groove that intersects with the oil storage tank, and the two ends of the oil guide groove are respectively connected to two adjacent pockets.
[0016] In one embodiment: at the same height, the maximum distance between the oil guide groove and the cage axis is greater than the distance between the axis of the tapered roller and the cage axis.
[0017] In one embodiment: multiple oil guide grooves are provided, and the multiple oil guide grooves are respectively provided at both ends of the limiting part and between the two limiting protrusions. The oil guide grooves provided at both ends of the limiting part are respectively located at the position where the limiting part is connected to the first ring body and the second ring body.
[0018] In one embodiment: the oil storage tank has flared openings at both ends for disconnecting the connection between the limiting part and the first ring body and the second ring body, and the flared openings at both ends are connected to the oil guide grooves at both ends.
[0019] In summary, this application has the following beneficial effects:
[0020] 1. By setting the limiting part and the limiting protrusion, the tapered roller can be limited after it is installed into the cage to prevent it from falling off.
[0021] 2. After the tapered rollers are installed, their sidewalls can only contact the interior of two adjacent connecting beams at the same time, or can only contact the interior of two adjacent limiting parts at the same time, forming a clearance fit structure. On the one hand, this can increase the oil storage between the cage and the rollers to increase the lubrication effect, and on the other hand, it can reduce or even avoid contact with the cage during use.
[0022] 3. The oil storage tank can increase the oil storage capacity and divide the limiting protrusion into two parts, thereby improving its elasticity and making it easier to install the tapered roller into the pocket.
[0023] 4. The oil guide groove can better guide the lubricating oil in the oil reservoir to the tapered roller. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the tapered roller cage structure in Embodiment 1;
[0025] Figure 2 This is a front sectional view of the tapered roller cage of Embodiment 1;
[0026] Figure 3 yes Figure 2 Sectional view of AA;
[0027] Figure 4 This is a schematic diagram of the tapered roller cage structure in Embodiment 2;
[0028] Figure 5 This is a partial structural schematic diagram of the tapered roller cage in Embodiment 3;
[0029] Figure 6 This is a schematic diagram of the tapered roller cage in Embodiment 4.
[0030] In the figure, 10 is a tapered roller; 100 is the first ring; 200 is the second ring body; 300 is the connecting beam; 400 is the pocket; 500 is the limiting part; 510 is the limiting protrusion; 600 is the oil reservoir; 700 is the oil guide groove; and 800 is the flared end. Detailed Implementation
[0031] The present application will be further described in detail below with reference to the accompanying drawings.
[0032] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0033] In addition, for ease of description and understanding, tapered rollers are included in the accompanying drawings. Therefore, it should be noted that tapered rollers are not the subject of this application.
[0034] Example 1: A tapered roller cage, such as Figure 1As shown, it includes a first ring 100 body, a second ring 200 body, and a plurality of connecting beams 300 connecting the first ring 100 body and the second ring 200 body. A pocket 400 is formed around the first ring 100 body, the second ring 200 body, and any two adjacent connecting beams 300.
[0035] The diameter of the first ring 100 is larger than that of the second ring 200, so that the cage is integrally formed into a conical structure.
[0036] Reference Figure 2 The connecting beam 300 has a protruding limiting part 500 at one end facing the center, and the limiting part 500 is arranged along the length direction of the connecting beam 300.
[0037] At least one limiting protrusion 510 is provided on the limiting part 500. In this embodiment, there are two limiting protrusions 510, which are respectively located at both ends of the connecting beam 300.
[0038] At the same height, the minimum distance between two adjacent limiting protrusions 510 is less than the diameter of the tapered roller 10, and the distance between the limiting protrusion 510 and the cage axis is less than the distance between the axis of the tapered roller 10 and the cage axis.
[0039] In this embodiment, the same height refers to the height plane perpendicular to the cage axis. The above arrangement enables the two adjacent limiting protrusions 510 to hold the inserted tapered rollers 10 in place, preventing them from coming out of the cage.
[0040] Reference Figure 3 The end faces of the connecting beam 300 and the limiting part 500 facing the pocket 400 are set in a plane, and the end faces of the connecting beam 300 and the limiting part 500 on the same side of the pocket 400 are set at an angle.
[0041] Furthermore, when the tapered roller 10 is installed in the pocket 400, the sidewall of the tapered roller 10 can only simultaneously abut against the interior of two adjacent connecting beams 300 or only simultaneously abut against the interior of two adjacent limiting parts 500. Thus, when the tapered roller 10 is installed in the pocket 400, it is not clamped by the end faces of the connecting beams 300 and the limiting parts 500, but rather forms a gap structure, allowing the tapered roller 10 to move freely within the pocket 400 in a small range.
[0042] In addition, the second ring 200 is chamfered on the side facing the shaft and the pocket 400. This setting allows the tapered roller 10 to act as a guide during installation, making the installation of the tapered roller 10 easier.
[0043] Example 2: As Figure 4As shown, the difference from Embodiment 1 is that the limiting part 500 is provided with an oil storage tank 600, and the two ends of the oil storage tank 600 pass through the first ring 100 body and the second ring body 200 respectively.
[0044] Furthermore, the width of the oil storage tank 600 gradually increases along the direction away from the connecting beam 300.
[0045] Example 3: As Figure 5 As shown, the difference from Embodiment 2 is that the connecting beam 300 is provided with an oil guide groove 700 at one end facing the center, which intersects with the oil storage tank 600. The two ends of the oil guide groove 700 are respectively connected to two adjacent pockets 400.
[0046] At the same height, the maximum distance between the oil guide groove 700 and the cage axis is greater than the distance between the axis of the tapered roller 10 and the cage axis. Preferably, the depth of the oil guide groove 700 exceeds the included angle between the end faces of the connecting beam 300 and the limiting part 500.
[0047] In this way, the lubricating oil delivered by the oil guide groove 700 can enter the angle between the end faces of the connecting beam 300 and the limiting part 500. The angle between the tapered rollers 10 will create a space, and the lubricating oil can achieve a better lubrication effect after entering the angle position.
[0048] Multiple oil guide grooves 700 are provided; five are used as an example in this embodiment. Multiple oil guide grooves 700 are respectively provided at both ends of the limiting part 500 and between the two limiting protrusions 510. The oil guide grooves 700 provided at both ends of the limiting part 500 are respectively located at the position where the limiting part 500 is connected to the first ring 100 body and the second ring body 200.
[0049] The oil guide grooves 700 at both ends can break the limiting part 500 at the first ring 100 and the second ring 200, so that the limiting protrusion 510 has better elasticity. At the same time, it can also allow the lubricating oil entering from both ends of the oil reservoir 600 to enter the gap formed by the tapered roller 10 at the included angle from both ends, increasing the oil storage capacity.
[0050] Example 4: Figure 5 As shown, the difference from Embodiment 3 is that the oil storage tank 600 has flared openings 800 at both ends for disconnecting the connection between the limiting part 500 and the first ring 100 and the second ring 200, and the flared openings 800 at both ends are connected to the oil guide grooves 700 at both ends.
[0051] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A tapered roller cage, characterized in that: It includes a first ring body (100), a second ring body (200), and a plurality of connecting beams (300) connecting the first ring body (100) and the second ring body (200), with pockets (400) formed around the first ring body (100), the second ring body (200), and any two adjacent connecting beams (300); The connecting beam (300) has a protruding limiting part (500) at one end facing the center, and the limiting part (500) has at least one limiting protrusion (510); at the same height, the minimum distance between two adjacent limiting protrusions (510) is less than the diameter of the tapered roller (10), and the distance between the limiting protrusion (510) and the cage axis is less than the distance between the axis of the tapered roller (10) and the cage axis; The limiting part (500) is provided with an oil storage tank (600), and the two ends of the oil storage tank (600) pass through the first ring body (100) and the second ring body (200) respectively; the connecting beam (300) is provided with an oil guide groove (700) at one end facing the center, which intersects with the oil storage tank (600), and the two ends of the oil guide groove (700) are respectively connected to two adjacent pockets (400).
2. A tapered roller cage according to claim 1, characterized in that: The end faces of the connecting beam (300) and the limiting part (500) facing the pocket (400) are arranged in a plane, and the end faces of the connecting beam (300) and the limiting part (500) on the same side of the pocket (400) are arranged at an angle.
3. A tapered roller cage according to claim 2, characterized in that: When the tapered roller (10) is installed in the pocket (400), the sidewall of the tapered roller (10) can only simultaneously abut against the interior of the two adjacent connecting beams (300) or can only simultaneously abut against the interior of the two adjacent limiting parts (500).
4. A tapered roller cage according to claim 1, 2, or 3, characterized in that: Two limiting protrusions (510) are provided, and the two limiting protrusions (510) are respectively located at both ends of the connecting beam (300).
5. A tapered roller cage according to claim 1, characterized in that: The width of the oil storage tank (600) gradually increases along the direction away from the connecting beam (300).
6. A tapered roller cage according to claim 1, characterized in that: At the same height, the maximum distance between the oil guide groove (700) and the cage axis is greater than the distance between the axis of the tapered roller (10) and the cage axis.
7. A tapered roller cage according to claim 6, characterized in that: The oil guide groove (700) is provided in multiple ways. The multiple oil guide grooves (700) are respectively provided at both ends of the limiting part (500) and between the two limiting protrusions (510). The oil guide grooves (700) provided at both ends of the limiting part (500) are respectively located at the position where the limiting part (500) connects with the first ring body (100) and the second ring body (200).
8. A tapered roller cage according to claim 7, characterized in that: The oil storage tank (600) has flared openings (800) at both ends for disconnecting the connection between the limiting part (500) and the first ring body (100) and the second ring body (200), and the flared openings (800) at both ends are connected to the oil guide grooves (700) at both ends.