A dust-proof sealing device for bearing pre-tightening force adjustment stage
By designing a dustproof sealing device for the bearing preload adjustment stage, and using sealing strips and sealing plates to form a sealing cover and ring, the problem of external contaminants entering during the preload adjustment process is solved, achieving temporary sealing protection for the bearing and preventing wear and performance degradation.
Patent Information
- Application Number
- CN202521288833.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2035-06-23
AI Technical Summary
During the preload adjustment process of angular contact ball bearings, the lack of temporary, removable protective devices allows external contaminants to enter the bearing, causing raceway wear and performance degradation.
A dustproof sealing device comprising a first half-ring and a second half-ring is designed. A sealing cover and a sealing ring are formed by the mating of a sealing strip and a sealing sheet, providing temporary sealing protection to prevent dust and metal debris from entering the bearing.
This effectively prevents dust and metal debris from entering the bearing during the preload adjustment stage, protecting the bearing's interior and avoiding wear and performance degradation.
Smart Images
Figure CN224497131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing assembly technology, specifically a dustproof sealing device used in the bearing preload adjustment stage. Background Technology
[0002] Angular contact bearings are precision rolling bearings that can withstand both radial and axial loads simultaneously. They are widely used in aerospace, precision machinery and other fields. To ensure the operating accuracy and lifespan of the bearings, angular contact ball bearings usually require preload adjustment during use.
[0003] The preload adjustment process for angular contact ball bearings typically requires multiple grinding of the spacers or raceways and repeated loading of the bearing. Current preload adjustment techniques only provide long-term sealing using seals or dust covers after bearing assembly, lacking temporary, removable protective devices during the preload adjustment phase. This leaves the bearing end face typically open during preload adjustment, allowing dust, metal shavings, wear particles from the loading mechanism, or other contaminants from the external environment to easily penetrate the bearing, causing problems such as raceway pitting and wear, leading to decreased performance or even damage to the angular contact bearing. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a sealing device for the bearing preload adjustment stage. This device can provide phased sealing protection for the bearing during the bearing preload adjustment stage, preventing dust, metal debris, and other external environmental contaminants from entering the bearing.
[0005] To achieve the above objectives, the specific solution adopted by the present invention is as follows: a dustproof sealing device for the bearing preload adjustment stage, comprising an annular body, the body comprising a first half-ring and a second half-ring, the first end of the first half-ring being rotatably connected to the first end of the second half-ring, the second end of the first half-ring and the second end of the second half-ring being detachably connected, and sealing strips and sealing plates being fixedly connected to the inner sides of both the first half-ring and the second half-ring, the two sealing strips being able to be joined to form a sealing cover for sealing the bearing end, and the two sealing plates being able to be joined to form a sealing ring for sealing the outer wall of the bearing.
[0006] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: both the first half-ring and the second half-ring are integrally connected with an extension portion extending inward, and the extension portion can fit against the end of the bearing. The sealing strip is fixedly disposed on the inner circumferential sidewall of the first half-ring and the second half-ring, and the sealing sheet is fixedly disposed on the extension portion.
[0007] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the extension is provided with a receiving groove, and the receiving groove extends to the inner circumferential sidewall of the extension, and the sealing sheet is fixedly disposed in the receiving groove.
[0008] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the sealing sheet is integrally connected with a long sealing lip and a short sealing lip, and the long sealing lip and the short sealing lip are spaced apart.
[0009] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the sealing sheet is integrally connected with a protrusion, and the protrusion can be inserted between the inner ring and the outer ring of the bearing; the short sealing lip is disposed on the protrusion, and the short sealing lip can fit against the inner wall of the outer ring of the bearing.
[0010] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the first end of the first half ring and the first end of the second half ring are rotatably connected by a rotary joint.
[0011] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the rotary pair includes a bearing seat mounted on the first half-ring and a rotating shaft mounted on the second half-ring, the bearing seat and the rotating shaft being rotatably connected.
[0012] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the second end of the first half-ring and the second end of the second half-ring are detachably connected by a locking mechanism.
[0013] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage, the locking mechanism includes an elastic buckle fixedly connected to the second half-ring, and a groove is provided on the outer peripheral sidewall of the first half-ring, wherein the elastic buckle matches the groove.
[0014] As a further optimization of the dustproof sealing device for the bearing preload adjustment stage mentioned above: the surface of the elastic buckle is provided with a long groove extending along the circumference of the main body, and a mounting bolt for fixing the elastic buckle is inserted in the long groove.
[0015] This invention provides temporary sealing protection for the bearing during the preload adjustment stage, preventing dust and metal debris from entering the bearing during this stage. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 yes Figure 2 A magnified view of part A in the middle;
[0019] Figure 4 This is a schematic diagram of the present invention in conjunction with an angular contact bearing;
[0020] Figure 5 This is a schematic diagram of one embodiment of the present invention.
[0021] Figure descriptions: 1-First half ring, 2-Second half ring, 3-Sealing strip, 4-Sealing plate, 5-Mounting bolt, 6-Long groove, 7-Elastic snap, 8-Slot, 9-Bearing outer ring, 10-Cage, 11-Bearing inner ring, 12-Long sealing lip, 13-Short sealing lip, 14-Loading ring, 15-Mandrel, 16-Outer spacer, 17-Inner spacer, 18-Rotating pair. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] Example 1
[0024] like Figure 1 As shown, a dustproof sealing device for the bearing preload adjustment stage is characterized by: including an annular body, the body including a first half-ring 1 and a second half-ring 2, the first end of the first half-ring 1 being rotatably connected to the first end of the second half-ring 2, the second end of the first half-ring 1 and the second end of the second half-ring 2 being detachably connected, and sealing strips 3 and sealing plates 4 being fixedly connected to the inner sides of both the first half-ring 1 and the second half-ring 2, the two sealing strips 3 being able to be joined to form a sealing cover for sealing the bearing end, and the two sealing plates 4 being able to be joined to form a sealing ring for sealing the outer wall of the bearing.
[0025] like Figure 5As shown, when adjusting the preload of the bearing, the paired bearings, outer spacer 16, and inner spacer 17 need to be installed on the spindle 15, and the load is applied using the loading ring 14. The sealing strip 4 covers the bearing inner ring 11 and the bearing outer ring 9 to prevent dust and debris from entering the bearing and to achieve a seal. At this time, the bearing outer ring 9, outer spacer 16, bearing inner ring 11, inner spacer 17, and sealing strip 4 keep the bearing cavity in a sealed state, isolating it from external components such as the loading ring 14 or solid contaminants from the external environment, providing effective protection for the bearing.
[0026] Example 2
[0027] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 2 As shown, the first half-ring 1 and the second half-ring 2 are both integrally connected with an extension portion extending inward, and the extension portion can fit against the end of the bearing. The sealing strip 3 is fixedly disposed on the inner circumferential sidewall of the first half-ring 1 and the second half-ring 2, and the sealing sheet 4 is fixedly disposed on the extension portion.
[0028] The sealing strip 3 and the sealing sheet 4 are made of rubber, and the sealing strip 3 and the sealing sheet 4 form a composite sealing structure with elastic compensation function at the stepped surface.
[0029] Example 3
[0030] This embodiment is an improvement on embodiment 2. Its main structure is the same as that of embodiment 2. The improvement is that: the extension is provided with a receiving groove, and the receiving groove extends to the inner peripheral sidewall of the extension. The sealing sheet 4 is fixedly installed in the receiving groove.
[0031] Example 4
[0032] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 3 As shown, the sealing sheet 4 is integrally connected with a long sealing lip 12 and a short sealing lip 13, and the long sealing lip 12 and the short sealing lip 13 are spaced apart.
[0033] Example 5
[0034] This embodiment is an improvement on embodiment 4. Its main structure is the same as that of embodiment 4. The improvement is that the sealing sheet 4 is integrally connected with a protrusion, and the protrusion can be inserted between the inner ring 11 and the outer ring 9 of the bearing. The short sealing lip 13 is provided on the protrusion, and the short sealing lip 13 can fit against the inner wall of the outer ring 9 of the bearing.
[0035] like Figure 4As shown, the long sealing lip 12 and the short sealing lip 13 form a stepped composite seal at the stepped surface. The long sealing lip 12 can cover the upper end face of the outer wall of the bearing inner ring 11, and the side end of the short sealing lip 13 can be in close contact with the outer wall of the bearing inner ring 11. The two provide double protection for dust prevention during the preload adjustment stage, and can effectively prevent dust and debris from entering the bearing.
[0036] Example 6
[0037] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1. The improvement is that the first end of the first half ring 1 and the first end of the second half ring 2 are rotatably connected by a rotary joint 18.
[0038] The use of a rotating pair 18 allows for large-angle opening and closing of the first half-ring 1 and the second half-ring 2, facilitating quick installation and removal of the bearing. Simultaneously, the rotating pair 18 ensures smooth rotation and long-term reliability under frequent opening and closing operations. During installation, the first end of the first half-ring 1 and the first end of the second half-ring 2 are firstly placed against the bearing. By rotating the first half-ring 1 and the second half-ring 2, the second end of the first half-ring 1 comes into contact with the second end of the second half-ring 2, and the second end of the first half-ring 1 is connected to the second end of the second half-ring 2, thus completing the installation.
[0039] Example 7
[0040] This embodiment is an improvement on embodiment 6. Its main structure is the same as that of embodiment 6. The improvement is that the rotary joint 4 includes a bearing seat installed on the first half ring 1 and a rotating shaft installed on the second half ring 2. The bearing seat and the rotating shaft are rotatably connected.
[0041] Example 8
[0042] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1. The improvement is that the second end of the first half ring 1 and the second end of the second half ring 2 are detachably connected by a locking mechanism.
[0043] Example 9
[0044] This embodiment is an improvement on embodiment 8. Its main structure is the same as that of embodiment 8. The improvement is that the locking mechanism includes a slot 8 opened in the first half ring 1 and an elastic buckle 7 installed in the second half ring 2. The elastic buckle 7 matches the slot 8.
[0045] During the rotation of the first half-ring 1 and the second half-ring 2, the elastic buckle 7 can be inserted into the slot 8, connecting the second end of the first half-ring 1 and the second end of the second half-ring 2 without additional operation, making it simpler and faster. After installation, the outer cylindrical surface of the bearing outer ring 9 mates with the sealing strip 3, and the end face of the bearing outer ring 9 mates with the end face of the sealing plate 4. Then, the slot 8 of the first half-ring 1 and the elastic buckle 7 installed on the second half-ring 2 are locked together to achieve a seal on the bearing end face. If it is necessary to disassemble the sealing device, the elastic buckle 7 can be disengaged from the slot 8 on the first half-ring 1 to achieve quick disassembly of the sealing device.
[0046] Example 10
[0047] This embodiment is an improvement on embodiment 9. Its main structure is the same as that of embodiment 9. The improvement is that the surface of the elastic buckle 7 is provided with a long groove 6 extending along the circumference of the main body, and the long groove 6 is provided with a mounting bolt 5 for fixing the elastic buckle 7.
[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A dustproof sealing device for use in the bearing preload adjustment stage, characterized in that: The body includes a ring-shaped main body, which includes a first half-ring (1) and a second half-ring (2). The first end of the first half-ring (1) is rotatably connected to the first end of the second half-ring (2). The second end of the first half-ring (1) and the second end of the second half-ring (2) are detachably connected. The inner sides of the first half-ring (1) and the second half-ring (2) are fixedly connected with sealing strips (3) and sealing plates (4). The two sealing strips (3) can be joined together to form a sealing cap for sealing the end of the bearing, and the two sealing plates (4) can be joined together to form a sealing ring for sealing the outer wall of the bearing.
2. The dustproof sealing device for bearing preload adjustment stage according to claim 1, characterized in that: The first half-ring (1) and the second half-ring (2) are integrally connected with an extension portion extending inward, and the extension portion can fit against the end of the bearing. The sealing strip (3) is fixedly disposed on the inner circumferential sidewall of the first half-ring (1) and the second half-ring (2), and the sealing sheet (4) is fixedly disposed on the extension portion.
3. A dustproof sealing device for bearing preload adjustment stage according to claim 2, characterized in that: The extension is provided with a receiving groove, and the receiving groove extends to the inner peripheral sidewall of the extension. The sealing sheet (4) is fixedly disposed in the receiving groove.
4. A dustproof sealing device for bearing preload adjustment stage according to claim 1, characterized in that: The sealing sheet (4) is integrally connected with a long sealing lip (12) and a short sealing lip (13), and the long sealing lip (12) and the short sealing lip (13) are spaced apart.
5. A dustproof sealing device for bearing preload adjustment stage according to claim 4, characterized in that: The sealing sheet (4) is integrally connected with a protrusion, and the protrusion can be inserted between the inner ring (11) and the outer ring (9) of the bearing. The short sealing lip (13) is provided on the protrusion, and the short sealing lip (13) can fit against the inner wall of the outer ring (9) of the bearing.
6. A dustproof sealing device for bearing preload adjustment stage according to claim 1, characterized in that: The first end of the first half-ring (1) is rotatably connected to the first end of the second half-ring (2) via a rotary joint (18).
7. A dustproof sealing device for bearing preload adjustment stage according to claim 6, characterized in that: The rotary joint (18) includes a bearing seat mounted on the first half-ring (1) and a rotating shaft mounted on the second half-ring (2), the bearing seat being rotatably connected to the rotating shaft.
8. A dustproof sealing device for bearing preload adjustment stage according to claim 1, characterized in that: The second end of the first half-ring (1) and the second end of the second half-ring (2) are detachably connected by a locking mechanism.
9. A dustproof sealing device for bearing preload adjustment stage according to claim 8, characterized in that: The locking mechanism includes an elastic buckle (7) fixedly connected to the second half ring (2), and a slot (8) is provided on the outer peripheral side wall of the first half ring (1), and the elastic buckle (7) matches the slot (8).
10. A dustproof sealing device for bearing preload adjustment stage according to claim 9, characterized in that: The surface of the elastic buckle (7) is provided with a long groove (6) extending along the circumference of the main body, and a mounting bolt (5) for fixing the elastic buckle (7) is inserted in the long groove (6).