Rolling bearing
By designing the combination of upper and lower bearing rings and rolling elements in rolling bearings, the axial bearing capacity is enhanced and the use of rolling elements of different specifications is solved, and the problem of easy damage to existing rolling bearings under load is improved, and the contact fatigue strength and wear resistance are improved. , extends service life and maintains structural balance.
Patent Information
- Application Number
- CN202421053307.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-14
AI Technical Summary
Existing rolling bearings are prone to single ball fatigue damage under cycle load, and the structural bearing capacity is insufficient, resulting in poor contact fatigue strength and wear resistance, which are prone to damage when radial or axial bearing capacity changes, affecting service life and safety.
Design the upper bearing ring group and the lower bearing ring group, through the rolling cooperation between the first rolling element and the second rolling element, the axial bearing capacity is enhanced, and the rolling elements of different specifications are combined to adapt to the changes in different axial bearing capacity, thereby increasing contact fatigue. Strength and wear resistance, stagger the rolling element position to maintain structural balance.
It effectively reduces bearing wear, extends service life, ensures that the mechanism can still operate normally when the bearing capacity changes, reduces the risk of failure, and improves the balance and wear resistance of the structure.
Smart Images
Figure CN222254689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a rolling bearing. Background Art
[0002] Bearings are an important component in mechanical equipment. With the continuous development of science and technology, bearings are used in more and more fields. The main function of bearings is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Current bearings are generally composed of four parts: outer ring, inner ring, ball and cage. Lubricating oil is injected into the ball position to reduce friction and better realize its function.
[0003] At present, when rolling bearings are subjected to periodic loads, the contact surface of a single ball is prone to fatigue damage, i.e., cracking and peeling. This is an important form of bearing damage. At the same time, the structure of a single ball is too simple and the radial or axial bearing capacity is too weak, so that the contact fatigue strength and wear resistance of the bearing cannot meet high requirements. When facing radial or axial bearing capacity at the same time, it is easy to be damaged, resulting in the entire bearing mechanism being unable to be used normally, thereby causing safety accidents and causing problems such as the safety of life and property. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a rolling bearing, which enhances the axial bearing capacity by setting an upper bearing ring group and a lower bearing ring group, and then rolling with a first rolling body and a second rolling body, and adapts to the changes of bearing capacities in different axial directions by combining rolling bodies of different sizes and specifications, improves contact fatigue strength and wear resistance, reduces bearing wear, helps prevent damage due to changes in bearing capacities in different axial directions, and further improves service life.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A rolling bearing according to an embodiment of the utility model comprises:
[0007] An upper bearing ring group, the upper bearing ring group includes an upper bearing outer ring and an upper bearing inner ring, and a plurality of first rolling bodies are slidably adapted between the upper bearing outer ring and the upper bearing inner ring;
[0008] A lower bearing ring group, the lower bearing ring group includes a lower bearing outer ring and a lower bearing inner ring, the lower bearing ring group is arranged on the side of the upper bearing ring group, a plurality of second rolling bodies are slidably adapted between the lower bearing outer ring and the lower bearing inner ring, and the diameter of the first rolling body is greater than the diameter of the second rolling body;
[0009] A keyway is arranged on the inner wall of the inner ring of the upper bearing.
[0010] According to some embodiments of the utility model, an upper outer annular groove is provided on the inner wall of the upper bearing outer ring, and the notch of the upper outer annular groove is concave to the left; an upper inner annular groove is provided on the outer wall of the upper bearing inner ring, and the notch of the upper inner annular groove is concave to the right.
[0011] According to some embodiments of the utility model, in a top view, a lower outer annular groove is provided on the inner wall of the lower bearing outer ring, and the notch of the lower outer annular groove is concave to the left; a lower inner annular groove is provided on the outer wall of the lower bearing inner ring, and the notch of the lower inner annular groove is concave to the right.
[0012] According to some embodiments of the utility model, the rolling bearing further includes a control box, and the distance between the upper outer annular groove and the upper inner annular groove is greater than the distance between the lower outer annular groove and the lower inner annular groove.
[0013] According to some embodiments of the present invention, the control box further includes a control panel and a button, and the first rolling body is tightly slidably fitted between the upper outer annular groove and the upper inner annular groove.
[0014] According to some embodiments of the utility model, the upper bearing ring group further includes a large retaining frame, which fixes the plurality of first rolling elements, and the lower bearing ring group further includes a small retaining frame, which fixes the plurality of second rolling elements.
[0015] According to some embodiments of the present invention, the first rolling element and the second rolling element are any one of high temperature bearing steel, high carbon chromium bearing steel, carburized bearing steel and corrosion resistant bearing steel.
[0016] According to some embodiments of the present invention, the diameter of the first rolling body is 3-6 μm greater than the diameter of the second rolling body.
[0017] According to some embodiments of the present invention, the lower bearing ring group is arranged on the bottom surface of the upper bearing ring group.
[0018] According to some embodiments of the present invention, the axis center of the upper bearing ring group is the same as the axis center of the lower bearing ring group.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] The rolling bearing provided by the utility model increases the axial load-bearing capacity by arranging an upper bearing ring group and a lower bearing ring group, and rolling cooperation between the first rolling body and the second rolling body. By combining rolling bodies of different sizes and specifications for use, it can adapt to changes in load-bearing capacities in different axial directions, improve contact fatigue strength and wear resistance, reduce wear of the bearing, and help prevent damage due to changes in load-bearing capacities in different axial directions, thereby further improving the service life. Since the positions of the first and second rolling bodies are staggered, the structure maintains symmetrical consistency, which is beneficial to structural balance. Even if the first rolling body with a larger load-bearing surface is damaged or falls, the second rolling body with a smaller load-bearing surface can temporarily replace the first rolling body to keep the bearing running, thereby keeping the mechanism running. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0022] Figure 1 One of the structural schematic diagrams of the rolling bearing provided by the utility model;
[0023] Figure 2 The second structural schematic diagram of the rolling bearing provided by the utility model;
[0024] Figure 3 for Figure 1 Full cross-sectional diagram at AA.
[0025] The markings in the figure are as follows:
[0026] Upper bearing ring group 100, upper bearing outer ring 110, upper bearing inner ring 120, first rolling element 130, upper outer annular groove 140, upper inner annular groove 150, large retaining frame 160; lower bearing ring group 200, lower bearing outer ring 210, lower bearing inner ring 220, second rolling element 230, lower outer annular groove 240, lower inner annular groove 250, small retaining frame 260; keyway 300. DETAILED DESCRIPTION
[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0028] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0031] Specifically, please refer to Figure 1-3 , the rolling bearing specifically comprises:
[0032] An upper bearing ring group 100, a lower bearing ring group 200 and a keyway 300, wherein the upper bearing ring group 100 includes an upper bearing outer ring 110 and an upper bearing inner ring 120, and a plurality of first rolling bodies 130 are slidably fitted between the upper bearing outer ring 110 and the upper bearing inner ring 120; the lower bearing ring group 200 includes a lower bearing outer ring 210 and a lower bearing inner ring 220, and the lower bearing ring group 200 is arranged on the side surface of the upper bearing ring group 100, and a plurality of second rolling bodies 230 are slidably fitted between the lower bearing outer ring 210 and the lower bearing inner ring 220, and the diameter of the first rolling body 130 is greater than the diameter of the second rolling body 230; the keyway 300 is arranged on the inner wall of the upper bearing inner ring 120.
[0033] The rolling bearing provided by the utility model is provided with an upper bearing ring group 100 and a lower bearing ring group 200, and then the first rolling body 130 and the second rolling body 230 are rollingly matched to enhance the axial bearing capacity. By combining rolling bodies of different sizes and specifications, it can adapt to the changes of bearing capacities in different axial directions, improve contact fatigue strength and wear resistance, reduce the wear of the bearing, and help prevent damage due to changes in bearing capacities in different axial directions, thereby further improving the service life. Since the positions of the first and second rolling bodies are staggered, the structure maintains symmetrical consistency, which is beneficial to structural balance. Even if the first rolling body 130 with a larger bearing surface is damaged or falls, the second rolling body 230 with a smaller bearing surface can temporarily replace the first rolling body 130 to keep the bearing running, thereby keeping the mechanism running.
[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example 1
[0037] Please refer to Figure 1-3 A rolling bearing comprises an upper bearing ring group 100, a lower bearing ring group 200 and a keyway 300, wherein the upper bearing ring group 100 comprises an upper bearing outer ring 110 and an upper bearing inner ring 120, and a plurality of first rolling elements 130 are slidably fitted between the upper bearing outer ring 110 and the upper bearing inner ring 120; the lower bearing ring group 200 comprises a lower bearing outer ring 210 and a lower bearing inner ring 220, the lower bearing ring group 200 is arranged on the bottom surface of the upper bearing ring group 100, and a plurality of second rolling elements 230 are slidably fitted between the lower bearing outer ring 210 and the lower bearing inner ring 220; the keyway 300 is arranged on the inner wall of the upper bearing outer ring 110.
[0038] Through the above structural design, the lower bearing ring group 200 is arranged below the upper bearing ring group 100, the upper bearing outer ring 110 is fixedly connected to the lower bearing outer ring 210, and the first rolling body 130 is adapted between them, and the upper bearing inner ring 120 is fixedly connected to the lower bearing inner ring 220, and the second rolling body 230 is adapted between them. The first rolling body 130 and the second rolling body 230 are rolled together to enhance the axial bearing capacity. By combining rolling bodies of different sizes and specifications, the positions of the first and second rolling bodies are staggered, but the symmetry consistency is maintained in the structure, which is beneficial to the structure. The structure is balanced. Even if the first rolling body 130 with a larger bearing surface is damaged or falls, the second rolling body 230 with a smaller bearing surface can temporarily replace the first rolling body 130 to keep the bearing running, thereby keeping the mechanism running and reducing the risk of failure once the first rolling body 130 loses its effectiveness. The mutual cooperation between the first rolling body 130 and the second rolling body 230 enables it to adapt to the changes in the bearing capacity of different axes, improves the contact fatigue strength and wear resistance, reduces the wear of the bearing, and is conducive to preventing damage due to changes in the bearing capacity of different axes, further improving the service life.
[0039] Specifically, an upper outer annular groove 140 is provided on the inner wall of the upper bearing outer ring 110, and the notch of the upper outer annular groove 140 is concave to the left. An upper inner annular groove 150 is provided on the outer wall of the upper bearing inner ring 120, and the notch of the upper inner annular groove 150 is concave to the right.
[0040] Through the above-mentioned structural design, the upper outer annular groove 140 is used to load and adapt the first rolling elements 130 of the same specification. The first rolling elements 130 are mainly connected by rolling in the upper outer annular groove 140 and the upper inner annular groove 150, so that the upper bearing outer ring 110 and the upper bearing inner ring 120 slide relative to each other, thereby realizing the bearing function.
[0041] Specifically, a lower outer annular groove 240 is provided on the inner wall of the lower bearing outer ring 210, and the notch of the lower outer annular groove 240 is concave to the left. A lower inner annular groove 250 is provided on the outer wall of the lower bearing inner ring 220, and the notch of the lower inner annular groove 250 is concave to the right.
[0042] Through the above-mentioned structural design, the lower outer annular groove 240 is used to load and adapt the first rolling elements 130 of the same specification. The first rolling elements 130 are mainly connected by rolling in the lower outer annular groove 240 and the lower inner annular groove 250, so that the lower bearing outer ring 210 and the lower bearing inner ring 220 slide relative to each other, thereby realizing the bearing function.
[0043] Specifically, the distance between the upper outer annular groove 140 and the upper inner annular groove 150 is greater than the distance between the lower outer annular groove 240 and the lower inner annular groove 250 .
[0044] Through the above-mentioned structural design, by designing the distance between the upper groove bodies and the distance between the lower groove bodies for loading large second rolling bodies 230 of different sizes, it is achieved that rolling bodies of different sizes play different roles in the present mechanism, and the axial bearing capacity is enhanced by the rolling cooperation between the first rolling body 130 and the second rolling body 230. By combining and using rolling bodies of different sizes, the positions of the first and second rolling bodies are staggered, but the structure maintains symmetrical consistency, which is beneficial to structural balance. Even if the first rolling body 130 with a larger bearing surface is damaged or falls, the second rolling body 230 with a smaller bearing surface can temporarily replace the first rolling body 130 to keep the bearing running, thereby keeping the mechanism running and reducing the risk of failure once the first rolling body 130 loses its effectiveness.
[0045] Specifically, the first rolling body 130 is tightly slidably fitted between the upper outer annular groove 140 and the upper inner annular groove 150 .
[0046] Through the above structural design, the mutual cooperation between the first rolling element 130 and the second rolling element 230 enables it to adapt to the changes in the load-bearing capacity in different axes, improve the contact fatigue strength and wear resistance, reduce the wear of the bearing, and help prevent damage due to changes in the load-bearing capacity in different axes, thereby further improving the service life. Example 2
[0047] The rolling bearing provided in Example 1 is further optimized, specifically, as follows Figure 1-3 As shown, the upper bearing ring assembly 100 further includes a large retaining frame 160 , and the large retaining frame 160 fixes the plurality of first rolling elements 130 . The lower bearing ring assembly 200 further includes a small retaining frame 260 , and the small retaining frame 260 fixes the plurality of second rolling elements 230 .
[0048] Through the above structural design, the large retaining frame 160 and the small retaining frame 260 respectively retain the first rolling body 130 and the second rolling body 230, avoiding the collision and friction between the first rolling body 130 and the second rolling body 230 that may cause damage to the entire rolling bearing, thereby further improving the service life of the rolling bearing.
[0049] Specifically, the first rolling element 130 and the second rolling element 230 are any one of high temperature bearing steel, high carbon chromium bearing steel, carburized bearing steel and corrosion resistant bearing steel.
[0050] Through the above structural design, in this embodiment, the first rolling element 130 and the second rolling element 230 are high carbon chromium bearing steel. High carbon chromium bearing steel has the characteristics of good comprehensive performance, high and uniform hardness after quenching and tempering, wear resistance, and high contact fatigue resistance. It can also be other materials according to different needs. Example 3
[0051] The rolling bearing provided in embodiment 1 or 2 is further optimized, such as Figure 1-3 As shown, the diameter of the first rolling body 130 is 3-6 μm greater than the diameter of the second rolling body 230 .
[0052] Through the above-mentioned structural design, in this embodiment, the diameter of the first rolling body 130 is 3 μm larger than the diameter of the second rolling body 230, and can also be other diameters under different requirements. This is mainly to ensure that even if the first rolling body 130 with a larger bearing surface is damaged or falls, the second rolling body 230 with a smaller bearing surface can temporarily replace the first rolling body 130 to keep the bearing running, thereby keeping the mechanism running and reducing the risk of failure once the first rolling body 130 loses its effectiveness.
[0053] Specifically, the lower bearing ring set 200 is arranged on the bottom surface of the upper bearing ring set 100 .
[0054] Through the above-mentioned structural design, the lower bearing ring group 200 is arranged below the upper bearing ring group 100, the upper bearing outer ring 110 is fixedly connected to the lower bearing outer ring 210, and the first rolling body 130 is adapted in the middle, and the upper bearing inner ring 120 is fixedly connected to the lower bearing inner ring 220, and the second rolling body 230 is adapted in the middle, and the first rolling body 130 and the second rolling body 230 are rollingly matched.
[0055] Specifically, the axis center of the upper bearing ring set 100 is the same as the axis center of the lower bearing ring set 200 .
[0056] Through the above structural design, the axis of the upper bearing ring set 100 is the same as the axis of the lower bearing ring set 200, so that the structure maintains symmetrical consistency, which is beneficial to structural balance.
[0057] The use process of the rolling bearing provided by the utility model is as follows:
[0058] By providing an upper bearing ring group 100 and a lower bearing ring group 200, and then rolling with the first rolling body 130 and the second rolling body 230, the axial bearing capacity is enhanced, and by combining rolling bodies of different sizes and specifications, it can adapt to changes in different axial bearing capacities, improve contact fatigue strength and wear resistance, reduce bearing wear, and help prevent damage due to changes in different axial bearing capacities, thereby further improving service life.
[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A rolling bearing, characterized in that: include: An upper bearing ring assembly (100), the upper bearing ring assembly (100) comprising an upper bearing outer ring (110) and an upper bearing inner ring (120), a plurality of first rolling bodies (130) being slidably adapted between the upper bearing outer ring (110) and the upper bearing inner ring (120); A lower bearing ring assembly (200), the lower bearing ring assembly (200) comprising a lower bearing outer ring (210) and a lower bearing inner ring (220), the lower bearing ring assembly (200) being arranged on the bottom surface of the upper bearing ring assembly (100), a plurality of second rolling bodies (230) being slidably adapted between the lower bearing outer ring (210) and the lower bearing inner ring (220), the diameter of the first rolling body (130) being greater than the diameter of the second rolling body (230); A keyway (300), wherein the keyway (300) is arranged on the inner wall of the upper bearing inner ring (120).
2. The rolling bearing according to claim 1, characterized in that: An upper outer annular groove (140) is provided on the inner wall of the upper bearing outer ring (110), and the notch of the upper outer annular groove (140) is concave to the left. An upper inner annular groove (150) is provided on the outer wall of the upper bearing inner ring (120), and the notch of the upper inner annular groove (150) is concave to the right.
3. The rolling bearing according to claim 2, characterized in that: A lower outer annular groove (240) is provided on the inner wall of the lower bearing outer ring (210), and the notch of the lower outer annular groove (240) is concave to the left. A lower inner annular groove (250) is provided on the outer wall of the lower bearing inner ring (220), and the notch of the lower inner annular groove (250) is concave to the right.
4. The rolling bearing according to claim 3, characterized in that: The distance between the upper outer annular groove (140) and the upper inner annular groove (150) is greater than the distance between the lower outer annular groove (240) and the lower inner annular groove (250).
5. The rolling bearing according to claim 4, characterized in that: The first rolling body (130) is tightly slidably fitted between the upper outer annular groove (140) and the upper inner annular groove (150).
6. The rolling bearing according to any one of claims 1 to 5, characterized in that: The upper bearing ring group (100) further comprises a large retaining frame (160), wherein the large retaining frame (160) fixes the plurality of first rolling elements (130), and the lower bearing ring group (200) further comprises a small retaining frame (260), wherein the small retaining frame (260) fixes the plurality of second rolling elements (230).
7. The rolling bearing according to claim 1, characterized in that: The first rolling element (130) and the second rolling element (230) are made of any one of high-temperature bearing steel, high-carbon chromium bearing steel, carburized bearing steel and corrosion-resistant bearing steel.
8. The rolling bearing according to claim 1, characterized in that: The diameter of the first rolling body (130) is 3 to 6 μm greater than the diameter of the second rolling body (230).
9. The rolling bearing according to claim 1, characterized in that: The lower bearing ring group (200) is arranged on the bottom surface of the upper bearing ring group (100).
10. The rolling bearing according to claim 1, characterized in that: The axis center of the upper bearing ring group (100) is the same as the axis center of the lower bearing ring group (200).