Working condition self-adaptive rolling and sliding composite bearing
By designing the rolling element and mating gap in the rolling sliding composite bearing, and adjusting the friction mode with the elastic deformation of the inner and outer rings, the problem of difficulty in adapting to load and operating conditions of existing bearings is solved, and excellent performance under different operating conditions is achieved.
Patent Information
- Application Number
- CN202421955357.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-08-13
AI Technical Summary
Existing rolling bearings and sliding bearings are difficult to adapt to changes in load and operating conditions, and cannot show excellent performance under light load high speed and heavy load low speed operating conditions.
A rolling and sliding composite bearing adaptive working conditions is designed, and the friction mode is adjusted by setting the rolling element and mating gap between the inner ring and the outer ring, and the elastic deformation of the inner ring and/or the outer ring when the load changes, from rolling friction to combined friction (a combination of rolling friction and sliding friction) to adapt to different working conditions.
This design enables the bearing to adaptively change friction mode when load and working conditions change, which can not only meet the light load and high speed working conditions, but also adapt to heavy load and low speed working conditions, thereby improving the applicability and performance of the bearing.
Smart Images
Figure CN222823555U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a working condition adaptive rolling and sliding composite bearing. Background Art
[0002] Rolling bearings have the advantages of low friction coefficient and high speed, but their ability to withstand impact loads is not high, and they are suitable for high-speed and light-load conditions. Sliding bearings have the advantages of large pressure-bearing area, high load capacity and good impact resistance, but their friction coefficient is large, and they are suitable for low-speed and heavy-load conditions. However, in some variable load and variable working condition applications, the speed is low when heavy load, and high when light load, and the existing rolling bearings and sliding bearings cannot adapt well to changes in loads and working conditions. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a working condition adaptive rolling and sliding composite bearing, which mainly solves the technical problem that the existing rolling bearings and sliding bearings are not well adapted to usage scenarios with changing loads and working conditions.
[0004] In order to achieve the above object, the utility model is realized by the following technical solutions:
[0005] A working condition adaptive rolling and sliding composite bearing comprises an inner ring and an outer ring, a plurality of rolling bodies arranged in a circle are arranged between the outer wall surface of the inner ring and the inner wall surface of the outer ring, a matching gap is arranged between the outer wall surface of the inner ring and the inner wall surface of the outer ring, an inner ring thinning deformation groove and an outer ring thinning deformation groove are respectively opened on the inner ring and / or the outer ring, when the bearing load is greater than the critical value of sliding friction, the inner ring and / or the outer ring produce elastic deformation, so that the outer wall surface of the inner ring and the inner wall surface of the outer ring are in contact with each other to generate sliding friction, and rolling friction is also formed between the outer wall surface of the inner ring and the inner wall surface of the outer ring by the rolling action of the rolling bodies; when the bearing load is less than the critical value of sliding friction, a gap is left between the outer wall surface of the inner ring and the inner wall surface of the outer ring, so that rolling friction is formed between the outer wall surface of the inner ring and the inner wall surface of the outer ring only by the rolling action of the rolling bodies.
[0006] Furthermore, the critical value of sliding friction refers to the load value when the load on the bearing reaches a value that can cause elastic deformation of the inner ring and / or the outer ring and contact between the outer wall surface of the inner ring and the inner wall surface of the outer ring, thereby generating sliding friction.
[0007] Furthermore, the inner ring thinning deformation groove is opened on the inner wall surface of the inner ring.
[0008] Furthermore, the outer ring thinning deformation groove is opened on the outer wall surface of the outer ring.
[0009] Furthermore, the rolling element provided between the outer wall surface of the inner ring and the inner wall surface of the outer ring is a ball.
[0010] Furthermore, a single row of balls or a double row of balls is arranged between the outer wall surface of the inner ring and the inner wall surface of the outer ring.
[0011] Furthermore, the rolling element disposed between the outer wall surface of the inner ring and the inner wall surface of the outer ring is a rolling column.
[0012] Furthermore, the outer wall surface of the inner ring and the inner wall surface of the outer ring are both straight sliding surface structures.
[0013] Furthermore, the outer wall surface of the inner ring and / or the inner wall surface of the outer ring are respectively formed with an inner ring arc-shaped sliding surface and an outer ring arc-shaped sliding surface.
[0014] The above technical solution has the following advantages or beneficial effects:
[0015] In the working condition adaptive rolling and sliding composite bearing described in the utility model, a plurality of rolling bodies arranged in a circumferential manner are provided between the outer wall surface of the inner ring and the inner wall surface of the outer ring, a matching gap is provided between the outer wall surface of the inner ring and the inner wall surface of the outer ring, and an inner ring thinning deformation groove is provided on the inner ring, so that when the bearing load is less than the critical value of sliding friction, the inner ring is not deformed or the deformation amount is not enough to form contact between the outer wall surface of the inner ring and the inner wall surface of the outer ring, thereby generating sliding friction, that is, there is a gap between the outer wall surface of the inner ring and the inner wall surface of the outer ring, so that the load is borne by the rolling body, and the rolling friction is formed between the outer wall surface of the inner ring and the inner wall surface of the outer ring only through the rolling action of the rolling body. When the bearing load is greater than the critical value of sliding friction, the inner ring generates elastic deformation, so that the outer wall surface of the inner ring and the inner wall surface of the outer ring are in contact with each other, thereby generating sliding friction, and the contact surface also bears part of the load at the same time, and rolling friction is also formed between the outer wall surface of the inner ring and the inner wall surface of the outer ring through the rolling action of the rolling body. In this way, the rolling-sliding composite bearing can adaptively switch between rolling friction and combined friction as the load conditions change, thereby simultaneously meeting the working conditions of light load and high speed and heavy load and low speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a rolling-sliding composite bearing according to the first embodiment of the utility model.
[0017] Figure 2 It is a schematic diagram of the rolling and sliding composite bearing structure of the second embodiment of the utility model.
[0018] Figure 3 It is a schematic diagram of the rolling and sliding composite bearing structure of the third embodiment of the utility model.
[0019] Figure 4 It is a structural schematic diagram of a rolling-sliding composite bearing according to a fourth embodiment of the utility model.
[0020] Figure 5It is a schematic diagram of the rolling-sliding composite bearing structure of the fifth embodiment of the utility model.
[0021] Figure 6 It is a schematic diagram of the rolling and sliding composite bearing structure of the sixth embodiment of the utility model.
[0022] Figure 7 It is a structural schematic diagram of a rolling-sliding composite bearing according to Embodiment 7 of the present utility model.
[0023] Figure 8 It is a schematic diagram of the rolling-sliding composite bearing structure of the eighth embodiment of the utility model.
[0024] Fig. 9 It is a schematic diagram of the rolling and sliding composite bearing structure of the ninth embodiment of the utility model.
[0025] Fig.10 It is a schematic diagram of the rolling and sliding composite bearing structure of the tenth embodiment of the utility model. DETAILED DESCRIPTION
[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0028] Embodiment 1
[0029] Please refer to the attached Figure 1 An embodiment of the utility model provides a working condition adaptive rolling and sliding composite bearing, including an inner ring 1 and an outer ring 2, a plurality of rolling bodies 3 arranged in a circle are arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, and a matching gap is arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, and an inner ring thinning deformation groove 11 is opened on the inner ring 1. When the bearing load is greater than the critical value of sliding friction, the inner ring 1 produces elastic deformation, so that the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 are in contact with each other, thereby generating sliding friction, and rolling friction is also formed between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 through the rolling action of the rolling body 3; when the bearing load is less than the critical value of sliding friction, a gap is left between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, so that rolling friction is formed between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 only through the rolling action of the rolling body 3.
[0030] It can be understood that, in the present embodiment, a plurality of circumferentially arranged rolling bodies 3 are provided between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, a fitting clearance is provided between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, and an inner ring thinning deformation groove 11 is provided on the inner ring 1. Thus, when the bearing load is less than the critical value of sliding friction, the inner ring 1 is not deformed or the deformation amount is not sufficient to form contact between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 to generate sliding friction, that is, a gap is left between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2. Therefore, the load is borne by the rolling bodies, and rolling friction is formed between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 only through the rolling action of the rolling bodies 3. When the bearing load is greater than the critical value of sliding friction, the inner ring 1 undergoes elastic deformation, so that the outer wall of the inner ring 1 and the inner wall of the outer ring 2 come into contact and thus generate sliding friction. The contact surface also bears part of the load at the same time, and rolling friction is also formed between the outer wall of the inner ring 1 and the inner wall of the outer ring 2 through the rolling action of the rolling element 3. In this way, the rolling-sliding composite bearing can adaptively switch between rolling friction and combined friction (a combination of rolling friction and sliding friction) as the load condition changes, thereby meeting both light-load high-speed and heavy-load low-speed conditions.
[0031] Please refer to the attached Figure 1 In a preferred embodiment, the critical value of sliding friction refers to the load value when the load on the bearing reaches a value that can cause elastic deformation of the inner ring 1 and contact between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, thereby generating sliding friction.
[0032] Please refer to the attached Figure 1 In one preferred embodiment, preferably, the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 are both straight sliding surface structures.
[0033] Please refer to the attached Figure 1 In one preferred embodiment, the inner ring thinning deformation groove 11 is opened on the inner wall surface of the inner ring 1. In this embodiment, preferably, the inner ring thinning deformation groove 11 is a concave arc groove structure.
[0034] Please refer to the attached Figure 1 In one preferred embodiment, the rolling element 3 disposed between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 is a ball. In this embodiment, preferably, a single row of balls is disposed between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2. However, those skilled in the art should understand that in other embodiments, the number of rows of balls is not limited to the specific implementation method disclosed in this embodiment, and may also be other numbers of rows.
[0035] Embodiment 2
[0036] Please refer to the attached Figure 2The difference between this embodiment and the first embodiment is that a double row of balls is arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2.
[0037] Embodiment 3
[0038] Please refer to the attached Figure 3 The difference between this embodiment and the second embodiment is that an outer ring thinning deformation groove 21 is further provided on the outer ring 2. In this way, when the bearing load is greater than the critical value of sliding friction, the inner ring 1 and the outer ring 2 are elastically deformed, so that the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 are in contact with each other, thereby generating sliding friction, and rolling friction is also generated between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 through the rolling action of the rolling body 3; when the bearing load is less than the critical value of sliding friction, a gap is left between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, so that rolling friction is only generated between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 through the rolling action of the rolling body 3.
[0039] Please refer to the attached Figure 1 In a preferred embodiment, the critical value of sliding friction refers to the load value when the bearing load reaches a value that can cause elastic deformation of the inner ring 1 and the outer ring 2 and contact between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2, thereby generating sliding friction.
[0040] Please refer to the attached Figure 3 In one preferred embodiment, the outer ring thinning deformation groove 21 is opened on the outer wall surface of the outer ring 2.
[0041] Embodiment 4
[0042] Please refer to the attached Figure 4 The difference between this embodiment and the first embodiment is that the rolling element 3 arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 is a rolling column, and the inner ring thinning deformation groove 11 is generally an inwardly concave trapezoidal groove structure.
[0043] Embodiment 5
[0044] Please refer to the attached Figure 5 The difference between this embodiment and the fourth embodiment is that an outer ring thinning deformation groove 21 is further provided on the outer ring 2.
[0045] Embodiment 6
[0046] Please refer to the attached Figure 6 The difference between this embodiment and the first embodiment is that the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 are respectively formed with the inner ring arcuate sliding surface 12 and the outer ring arcuate sliding surface 22 that cooperate with each other. In addition, in some other embodiments, the arcuate sliding surface structure can also be provided on only one of the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2. Preferably, the arcuate sliding surface structure is provided on the inner ring or the outer ring with the thinning deformation groove.
[0047] Embodiment 7
[0048] Please refer to the attached Figure 7 The difference between this embodiment and the sixth embodiment is that the rolling element 3 arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2 is a rolling column, and the inner ring thinning deformation groove 11 is generally an inwardly concave trapezoidal groove structure.
[0049] Embodiment 8
[0050] Please refer to the attached Figure 8 The difference between this embodiment and the seventh embodiment is that an outer ring thinning deformation groove 21 is further provided on the outer ring 2.
[0051] Embodiment 9
[0052] Please refer to the attached Fig. 9 The difference between this embodiment and the sixth embodiment is that a double row of balls is arranged between the outer wall surface of the inner ring 1 and the inner wall surface of the outer ring 2.
[0053] Embodiment 10
[0054] Please refer to the attached Fig.10 The difference between this embodiment and the ninth embodiment is that an outer ring thinning deformation groove 21 is further provided on the outer ring 2.
[0055] Embodiment 11
[0056] The difference between this embodiment and the first embodiment is that only the outer ring 2 is provided with the outer ring thinning deformation groove 21 , while the inner ring 1 is not provided with the inner ring thinning deformation groove 11 .
[0057] As described above, the embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the protection scope of the utility model.
Claims
1. A working condition adaptive rolling and sliding composite bearing, comprising an inner ring (1) and an outer ring (2), a plurality of rolling bodies (3) arranged in a circumferential manner are provided between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2), and a fitting clearance is provided between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2), characterized in that: The inner ring (1) and / or the outer ring (2) are respectively provided with an inner ring thinning deformation groove (11) and an outer ring thinning deformation groove (21). When the bearing load is greater than the critical value of sliding friction, the inner ring (1) and / or the outer ring (2) are elastically deformed, so that the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) are in contact with each other, thereby generating sliding friction, and rolling friction is also generated between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) through the rolling action of the rolling body (3); when the bearing load is less than the critical value of sliding friction, a gap is left between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2), so that rolling friction is generated between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) only through the rolling action of the rolling body (3).
2. The working condition adaptive rolling and sliding composite bearing according to claim 1, characterized in that: The critical value of sliding friction refers to the load value when the load on the bearing reaches a value that can cause elastic deformation of the inner ring (1) and / or the outer ring (2) and contact between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) to generate sliding friction.
3. The working condition adaptive rolling and sliding composite bearing according to claim 1, characterized in that: The inner ring thinning deformation groove (11) is arranged on the inner wall surface of the inner ring (1).
4. The working condition adaptive rolling and sliding composite bearing according to claim 1, characterized in that: The outer ring thinning deformation groove (21) is arranged on the outer wall surface of the outer ring (2).
5. The working condition adaptive rolling and sliding composite bearing according to claim 1, characterized in that: The rolling element (3) arranged between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) is a ball.
6. The working condition adaptive rolling and sliding composite bearing according to claim 5, characterized in that: A single row of balls or a double row of balls is arranged between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2).
7. The working condition adaptive rolling and sliding composite bearing according to claim 1, characterized in that: The rolling element (3) arranged between the outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) is a rolling column.
8. The working condition adaptive rolling and sliding composite bearing according to any one of claims 1 to 7, characterized in that: The outer wall surface of the inner ring (1) and the inner wall surface of the outer ring (2) are both straight sliding surface structures.
9. The working condition adaptive rolling and sliding composite bearing according to any one of claims 1 to 7, characterized in that: The outer wall surface of the inner ring (1) and / or the inner wall surface of the outer ring (2) are respectively formed with an inner ring arc-shaped sliding surface (12) and an outer ring arc-shaped sliding surface (22).