Chain wheel type slewing bearing
By replacing the traditional gear-type slewing bearing with a sprocket structure and using a seamless interlocking connection, the load capacity and sealing problems of the traditional slewing bearing are solved, enabling efficient installation and easy replacement, extending service life and saving resources.
Patent Information
- Application Number
- CN202520851421.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Traditional slewing bearings mostly use gear transmission, which has limited load-bearing capacity, poor sealing performance, and the integrated structure makes it necessary to replace the entire bearing, which affects its service life and wastes resources.
The use of a sprocket structure to replace gears increases load-bearing capacity and sealing performance, and the seamless interlocking connection achieves an integrated structure, making it easy to replace damaged parts individually.
It improves load-bearing capacity and sealing performance, simplifies the installation process, extends service life, and saves resources.
Smart Images
Figure CN223868385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slewing bearing technology, specifically to a sprocket-type slewing bearing. Background Technology
[0002] With the continuous development of mechanized and automated equipment, slewing bearings have gradually evolved from simple supports to highly complex rotating devices. Their application areas have also expanded from traditional machinery to mining, shipbuilding, wind power, and oil exploration. Among them, the sprocket-type slewing bearing is a mechanical component that combines chain rotation and slewing support functions. It achieves rotational drive through the meshing of the sprocket and chain, and can withstand axial, radial, and overturning moment loads, making it suitable for high-load and heavy-duty machinery.
[0003] Compared to existing slewing bearings, traditional slewing bearings have the following drawbacks: they mostly use gear transmission, have limited load-bearing capacity, poor sealing, and are integrally molded, requiring complete replacement when damaged, which affects service life and wastes resources. Utility Model Content
[0004] The purpose of this utility model is to provide a sprocket-type slewing bearing to solve the following technical problems: traditional slewing bearings mostly use gear transmission, and have limited load-bearing capacity and poor sealing performance. At the same time, the integrated structure requires replacement of the whole unit when it is damaged, which affects the service life and wastes resources.
[0005] The objective of this utility model can be achieved through the following technical solutions:
[0006] A slewing bearing includes: an inner ring body of a slewing bearing; an outer ring body of a slewing bearing that is sleeved around the outer side of the inner ring body of the slewing bearing; and sealing elements that block the ball bearings are provided on the lower outer side of the inner ring body of the slewing bearing and the upper inner side of the outer ring body of the slewing bearing.
[0007] One end of the outer ring of the sprocket-type slewing bearing is provided with a convex structure, and the outer side of the outer ring of the sprocket-type slewing bearing is provided with a connecting arc plate that limits the other single unit.
[0008] As a further embodiment of this utility model: a through cavity is provided in the middle of the inner ring of the sprocket-type slewing bearing, and hoisting holes are equidistantly distributed on the inner side of the inner ring of the sprocket-type slewing bearing.
[0009] As a further embodiment of this utility model: an isolation block is provided on the outer side of the ball bearing, and the ball bearing and the isolation block are respectively wrapped and fitted with the inner ring body and the outer ring body of the sprocket-type slewing bearing.
[0010] As a further embodiment of this utility model: semi-circular grooves are provided on the inner sides of both the inner and outer rings of the sprocket-type slewing bearing, and the outer ring of the sprocket-type slewing bearing forms a fitted rotation structure on the inner ring of the sprocket-type slewing bearing through ball bearings.
[0011] As a further embodiment of this utility model: a first limiting groove is provided at one end of the outer ring of the sprocket-type slewing bearing, and a second limiting groove is provided at the other end.
[0012] As a further embodiment of this utility model: the outer ring of the sprocket-type slewing bearing forms an engaging sliding structure in the second limiting groove through a convex structure, and the outer ring of the sprocket-type slewing bearing is seamlessly connected to another unit to form an integrated structure.
[0013] As a further embodiment of this utility model: the connecting arc plate is connected to the outer ring of the sprocket-type slewing bearing by means of a snap-fit through the first limiting groove and the second limiting groove respectively.
[0014] As a further embodiment of this utility model: an adjusting bolt is provided at the connection between the connecting arc plate and the outer ring of the sprocket-type slewing bearing, which is used to prevent the outer ring of the sprocket-type slewing bearing from falling off as a whole after the connecting arc plate and the outer ring of the sprocket-type slewing bearing are fixedly connected.
[0015] The beneficial effects of this utility model are:
[0016] 1. By replacing the gear structure of the traditional gear-type slewing bearing with a sprocket structure, the application scenarios of the slewing bearing are expanded, the load-bearing capacity of the slewing bearing is improved, and the sealing performance is enhanced, making it compatible with various equipment with similar functions.
[0017] 2. By using a convex structure to seamlessly engage with another single unit through the outer ring of the sprocket-type slewing bearing, an integrated structure can be assembled, which simplifies the structure and makes installation convenient. If the outer ring of a single sprocket-type slewing bearing is damaged in the future, it can be disassembled and replaced independently, increasing service life and saving resource costs. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] Figure 1 This is a front view schematic diagram of the connection between the inner ring body and the outer ring body of the sprocket-type slewing bearing of this utility model;
[0020] Figure 2 This is a bottom view cross-sectional structural diagram of the connection between the inner ring of the sprocket-type slewing bearing and the outer ring of the sprocket-type slewing bearing of this utility model.
[0021] Figure 3This is a front view cross-sectional structural diagram of the connection between the inner ring body and the outer ring body of the sprocket-type slewing bearing of this utility model.
[0022] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle;
[0023] Figure 5 This is an exploded view of the overall structure of the connection between the outer ring of the sprocket-type slewing bearing and the chain teeth.
[0024] In the diagram: 1. Inner ring of slewing bearing; 2. Lifting hole; 3. Ball bearing; 4. Isolation block; 5. Outer ring of slewing bearing; 6. Chain tooth; 7. Convex structure; 8. First limiting groove; 9. Second limiting groove; 10. Connecting arc plate; 11. Adjusting bolt; 12. Seal. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] Example 1
[0027] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model is a sprocket-type slewing bearing, specifically designed to increase sealing and rotational performance. It includes a sprocket-type slewing bearing inner ring 1; an outer sprocket-type slewing bearing outer ring 5 is provided on the outer side of the inner ring 1, which is wrapped around the inner ring 1; and sealing elements 12 for sealing and blocking the balls 3 are provided on the lower outer side of the inner ring 1 and the upper inner side of the outer ring 5.
[0028] In this embodiment, preferably, a through cavity is provided in the middle of the inner ring body 1 of the sprocket-type slewing bearing, and lifting holes 2 are equidistantly distributed on the inner side of the inner ring body 1 of the sprocket-type slewing bearing.
[0029] In this embodiment, preferably, an isolation block 4 is provided on the outer side of the ball bearing 3, and the ball bearing 3 and the isolation block 4 are respectively wrapped and fitted with the inner ring body 1 and the outer ring body 5 of the sprocket-type slewing bearing.
[0030] In this embodiment, preferably, a semi-circular groove is provided on the inner side of both the inner ring body 1 and the outer ring body 5 of the sprocket-type slewing bearing, and the outer ring body 5 of the sprocket-type slewing bearing forms a close-fitting rotating structure on the inner ring body 1 through the ball bearings 3.
[0031] In summary, the inner ring 1 of the sprocket-type slewing bearing adopts an annular support structure, which can be connected to the main unit for fixation. Both the inner ring 1 and the outer ring 5 of the sprocket-type slewing bearing are equipped with semi-circular grooves on their inner sides for limiting the installation of the balls 3 and the spacers 4. First, the balls 3 and spacers 4 are evenly placed in the semi-circular grooves opened on the inner side of the outer end of the inner ring 1 of the sprocket-type slewing bearing. Then, the outer ring 5 of the sprocket-type slewing bearing is stacked and installed sequentially on the sprocket-type slewing bearing. The outer side of the inner ring body 1 is supported, and the semi-circular groove opened on the inner side of the inner end of the outer ring body 5 of the sprocket-type slewing bearing engages with the ball 3 and the spacer block 4, which serves to fix the ball 3 and the spacer block 4 and prevent the ball 3 and the spacer block 4 from falling off. Then, the outer ring body 5 of the sprocket-type slewing bearing is installed with the chain through the chain teeth 6 fixedly connected to the outer end. The seal 12 is made of fluororubber or silicone to improve sealing and wear resistance and increase the service life of the sprocket-type slewing bearing.
[0032] Furthermore, an oil nozzle is provided at the inner end of the inner ring 1 of the sprocket-type slewing bearing, which facilitates the subsequent addition of lubricating oil to the connection between the ball 3 and the spacer block 4, thereby increasing the sliding effect of the ball 3 and the spacer block 4 and improving lubrication.
[0033] Example 2
[0034] Reference Figure 3 , Figure 4 and Figure 5 The image shows the second embodiment of this utility model, which is specifically designed to allow for individual disassembly and replacement when damaged. It includes a convex structure 7 at one end of the outer ring body 5 of the sprocket-type slewing bearing, and a connecting arc plate 10 on the outer side of the outer ring body 5 of the sprocket-type slewing bearing to limit the other unit.
[0035] In this embodiment, preferably, a first limiting groove 8 is provided at one end of the outer ring body 5 of the sprocket-type slewing bearing, and a second limiting groove 9 is provided at the other end.
[0036] In this embodiment, preferably, the outer ring body 5 of the sprocket-type slewing bearing forms an engaging sliding structure within the second limiting groove 9 through the convex structure 7, and the outer ring body 5 of the sprocket-type slewing bearing is seamlessly connected to another unit to form an integrated structure.
[0037] In this embodiment, preferably, the connecting arc plate 10 is connected to the outer ring body 5 of the sprocket-type slewing bearing by means of a snap-fit through the first limiting groove 8 and the second limiting groove 9 respectively.
[0038] In this embodiment, preferably, an adjusting bolt 11 is provided at the connection between the connecting arc plate 10 and the outer ring body 5 of the sprocket-type slewing bearing, so as to prevent the outer ring body 5 of the sprocket-type slewing bearing from falling off as a whole after the connecting arc plate 10 and the outer ring body 5 of the sprocket-type slewing bearing are fixedly connected.
[0039] In summary, the outer ring body 5 of the sprocket-type slewing bearing is connected to the second limiting groove 9 opened on the inner side of the outer ring body 5 of another single sprocket-type slewing bearing by a convex structure 7 fixedly installed at one end, achieving a seamless structure. After the assembly is completed, the outer ring body 5 of the sprocket-type slewing bearing forms a ring support structure. Then, the connecting arc plate 10 is engaged with the outer ring body 5 of the sprocket-type slewing bearing by the first limiting groove 8 and the second limiting groove 9 respectively. The connecting arc plate 10 and the outer ring body 5 of the sprocket-type slewing bearing are then threaded together by the adjusting bolt 11 to increase the rigidity between the outer ring body 5 of the sprocket-type slewing bearing and each other, and to prevent loosening and falling off later. The chain teeth 6 fixedly connected to the outer end of the outer ring body 5 of the sprocket-type slewing bearing are connected to the chain, increasing the application scenarios of the device.
[0040] Example 3
[0041] This embodiment is obtained by combining Embodiment 1 and Embodiment 2.
[0042] The seamless assembly of the sprocket-type slewing bearing outer ring 5 and another unit allows the sprocket-type slewing bearing outer ring 5 to be assembled into an integrated structure, increasing overall resistance. In case of damage, the individual sprocket-type slewing bearing outer ring 5 can be disassembled and replaced to extend its service life, save resources and avoid waste. With the staggered arrangement of the seals 12, the balls 3 and the isolation block 4 can be sealed and shielded to prevent dust from entering and affecting the rotation effect.
[0043] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A slewing bearing with a sprocket mechanism, characterized in that, include: The inner ring of the slewing bearing is a sprocket-type slewing bearing (1); the outer side of the inner ring of the slewing bearing (1) is provided with a sprocket-type slewing bearing outer ring (5) that is wrapped and sleeved. The lower outer side of the inner ring of the slewing bearing (1) and the upper inner side of the outer ring of the slewing bearing (5) are both provided with sealing elements (12) to seal and block the balls (3). One end of the outer ring body (5) of the sprocket-type slewing bearing is provided with a convex structure (7), and the outer side of the outer ring body (5) of the sprocket-type slewing bearing is provided with a connecting arc plate (10) that limits another single unit.
2. The sprocket-type slewing bearing according to claim 1, characterized in that, The inner ring (1) of the sprocket-type slewing bearing has a through cavity in the middle, and the inner side of the inner ring (1) of the sprocket-type slewing bearing has hoisting holes (2) distributed at equal intervals.
3. The sprocket-type slewing bearing according to claim 1, characterized in that, An isolation block (4) is provided on the outer side of the ball (3). The ball (3) and the isolation block (4) are respectively wrapped and fitted with the inner ring (1) of the sprocket-type slewing bearing and the outer ring (5) of the sprocket-type slewing bearing.
4. The sprocket-type slewing bearing according to claim 3, characterized in that, The inner ring (1) and outer ring (5) of the sprocket-type slewing bearing are both provided with semi-circular grooves. The outer ring (5) of the sprocket-type slewing bearing forms a fitting rotation structure on the inner ring (1) of the sprocket-type slewing bearing through the ball bearings (3).
5. The sprocket-type slewing bearing according to claim 4, characterized in that, The outer ring body (5) of the sprocket-type slewing bearing has a first limiting groove (8) at one end and a second limiting groove (9) at the other end.
6. The sprocket-type slewing bearing according to claim 5, characterized in that, The outer ring body (5) of the sprocket-type slewing bearing forms a locking sliding structure in the second limiting groove (9) through the convex structure (7), and the outer ring body (5) of the sprocket-type slewing bearing is seamlessly connected to another single unit to form an integrated structure.
7. The sprocket-type slewing bearing according to claim 1, characterized in that, The connecting arc plate (10) is connected to the outer ring body (5) of the sprocket-type slewing bearing by means of a snap-fit through the first limiting groove (8) and the second limiting groove (9).
8. The sprocket-type slewing bearing according to claim 7, characterized in that, An adjusting bolt (11) is provided at the connection between the connecting arc plate (10) and the outer ring body (5) of the sprocket-type slewing bearing, which is used to prevent the outer ring body (5) of the sprocket-type slewing bearing from falling off as a whole after the connecting arc plate (10) and the outer ring body (5) of the sprocket-type slewing bearing are fixedly connected.