Self-aligning roller bearing with good sealing effect
By designing sealing grooves, limiting grooves and arc-shaped edge-retaining structures in the center-aligning roller bearings, the precise clamping and tight fit of the sealing ring is achieved, which solves the problem of grease loss, improves the sealing effect and reduces the Maintenance cost.
Patent Information
- Application Number
- CN202421012349.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing center-aligning roller bearing seal ring is not accurately connected, resulting in grease loss and frequent grease injection is required, which increases cost and loss.
An outer ring with a sealing groove and a limiting groove is designed, combining a spring and a fixed block structure to achieve accurate clamping of the sealing ring; the arc-shaped barrier of the inner ring is closely fitted with the extended barrier of the sealing ring to prevent dust Enter and grease loss.
It achieves a good sealing effect of center-aligning roller bearings, reduces the loss and injection of grease, and reduces maintenance costs.
Smart Images
Figure CN222163236U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bearing sealing, in particular to a spherical roller bearing with good sealing effect. Background Art
[0002] There are two rows of symmetrical spherical rollers inside the spherical roller bearing. The outer ring has a common spherical raceway, and the inner ring has two raceways that are inclined at an angle to the bearing axis. It has good self-aligning performance. This type of bearing has a large load capacity. In addition to being able to withstand radial loads, the bearing can also withstand bidirectional axial loads and has good impact resistance. Generally speaking, the allowable operating speed of spherical roller bearings is relatively low.
[0003] In the prior art, there is usually a roller raceway between the outer ring and the inner ring of the spherical roller bearing, so there is a large gap. The spherical roller bearings are used in many places and need to be sealed to prevent dust or the loss of internal grease. The sealing rings in the prior art are simply inserted into the roller bearings. Although this can also achieve a seal for the spherical roller bearing, it is impossible to achieve a precise snap-fit of the sealing ring inside the bearing and the sealing effect is poor. When the spherical roller bearing is used, a large amount of grease is injected into the roller and it is easy to lose. The loss of grease will cause the roller to fail early or the work efficiency to decrease, which will lead to the need for frequent grease brushing, resulting in losses and further increase costs. Utility Model Content
[0004] The utility model aims to provide a spherical roller bearing with good sealing effect, which solves the problems in the prior art that the spherical roller bearing and the sealing ring are not accurately engaged with each other and the internal grease is easily lost, resulting in the need for frequent grease injection.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a spherical roller bearing with good sealing effect, comprising an outer ring, sealing grooves are provided at both ends of the outer ring, a fixing groove is provided inwardly at one end of the sealing groove, a sealing ring is installed in the sealing groove, and the inner ring of the sealing ring is fixedly connected with an extended rib.
[0006] Limiting grooves are provided at both ends of the sealing ring, one end of the limiting groove is fixedly connected to a spring, the other end of the spring is fixedly connected to a limiting plate, the other end of the limiting plate is fixedly connected to a fixing block, and the fixing block penetrates the sealing ring outward, the fixing block corresponds to the fixing groove, and an inner ring is installed on the inner side of the outer ring.
[0007] As a further description of the above technical solution: arc-shaped ribs are provided at both ends of the inner ring, and the extended ribs correspond to the arc-shaped ribs.
[0008] As a further description of the above technical solution: the middle part of the outer ring is movably connected to two rollers, and the middle part of the roller is fixedly connected to a fixing frame.
[0009] As a further description of the above technical solution: two raceways are provided in the middle of the inner ring, and the rollers roll inside the raceways.
[0010] The utility model has the following beneficial effects:
[0011] 1. Compared with the prior art, the spherical roller bearing with good sealing effect adopts a sealing groove on the outer ring of the spherical roller bearing, and then a fixing groove can be opened inwardly inside the sealing groove, and a spring structure is installed at both ends of the sealing ring, so that the spring drives the fixing block to move, and the fixing block corresponds to the fixing groove, so as to achieve a precise clamping connection with the spherical roller bearing when installing the sealing ring;
[0012] 2. Compared with the prior art, this spherical roller bearing with good sealing effect adopts arc-shaped ribs at both ends of the inner ring and extended ribs corresponding to the arc-shaped ribs are also installed on the inner ring of the sealing ring, so that the sealing ring and the spherical roller bearing can be closely fitted, thereby preventing the entry of dust and reducing the loss of internal grease, further reducing the number of times grease is injected and saving costs.
[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the sealing ring structure of the utility model.
[0017] Figure 3 It is a schematic diagram of the internal structure of the spring of the utility model.
[0018] Figure 4 The utility model Figure 3 Schematic diagram of the structure of A.
[0019] Legend:
[0020] 1. Fixed frame; 2. Roller; 3. Outer ring; 4. Fixed groove; 5. Sealing groove; 6. Inner ring; 7. Arc rib; 8. Raceway; 9. Sealing ring; 10. Extended rib; 11. Fixed block; 12. Limiting groove; 13. Limiting plate; 14. Spring. DETAILED DESCRIPTION
[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0022] Reference Figure 1-4 The utility model provides an embodiment of a spherical roller bearing with good sealing effect, including an outer ring 3, sealing grooves 5 are provided at both ends of the outer ring 3, the sealing grooves 5 can just put down the sealing ring 9, and a fixing groove 4 is provided inward at one end of the sealing groove 5. The opening of the fixing groove 4 can facilitate the fast and accurate clamping of the fixing blocks 11 at both ends of the sealing ring 9 with the bearing, and can also further ensure the sealing effect of the bearing. A sealing ring 9 is installed in the sealing groove 5, and the inner ring of the sealing ring 9 is fixedly connected with an extended rib 10. The extended rib 10 is an inclined rib, which can fit with the arc rib 7 at both ends of the inner ring 6, further ensuring the sealing effect of the bearing in subsequent use.
[0023] Limiting grooves 12 are provided at both ends of the sealing ring 9. The limiting grooves 12 can ensure the moving position of the spring 14 and will not be offset during the installation process. It can also ensure the accurate clamping of the fixing block 11 and the fixing groove 4. One end of the limiting groove 12 is fixedly connected with a spring 14, and the other end of the spring 14 is fixedly connected with a limiting plate 13. The spring 14 can move the fixing block 11 inwardly and can also generate a reaction force after the fixing block 11 and the fixing groove 4 correspond to each other, so that the fixing block 11 and the fixing groove 4 are clamped to each other. The other end of the limiting plate 13 is fixedly connected with a fixing block 11, and the fixing block 11 penetrates the sealing ring 9 outward, and the fixing block 11 corresponds to the fixing groove 4. The limiting plate 13 can prevent the spring 14 from flying out of the limiting groove 12 due to excessive reaction force, and can have a limiting effect on the spring 14 and the fixing block 11. The inner side of the outer ring 3 is installed with an inner ring 6.
[0024] Arc-shaped ribs 7 are provided at both ends of the inner ring 6, and extended ribs 10 correspond to the arc-shaped ribs 7. The extended ribs 10 are installed on the inner ring of the sealing ring 9. When the sealing ring 9 and the sealing groove 5 are clamped together, in order to prevent a gap from being generated at the clamping point between the inner ring 6 and the sealing ring 9, the extended ribs 10 can fit tightly with the arc-shaped ribs 7 at both ends of the inner ring 6, thereby better sealing the spherical roller bearing.
[0025] Two rollers 2 are movably connected in the middle of the outer ring 3, and a fixing frame 1 is fixedly connected in the middle of the roller 2. The fixing frame 1 prevents the roller 2 from falling off during centering, and the fixing frame 1 can make the movement speed and movement trajectory of the two rollers 2 the same. Two raceways 8 are opened in the middle of the inner ring 5, and the roller 2 rolls inside the raceways 8. The opening of the raceways 8 can further limit the raceway trajectory of the roller 2 and will not cause the roller 2 to deviate from its position during rotation.
[0026] Working principle: first press the fixing block 11 on the sealing ring 9. Because a spring 14 is installed at the bottom of the fixing block 11, the fixing block 11 will retract into the limiting groove 12 with the spring 14, and then the sealing ring 9 will be installed in the sealing groove 5 between the outer ring 3 and the inner ring 6. When the fixing block 11 encounters the fixing groove 4 opened at both ends of the outer ring 3 after releasing the hand, the spring 14 inside the limiting groove 12 will generate a reaction force, so that the fixing block 11 on the spring 14 pops out, so that the fixing block 11 can just clamp with the fixing groove 4, so that the sealing ring 9 and the spherical roller bearing can be quickly clamped and fixed, and an arc rib 7 is opened at the outer end of the inner ring 6 and an extended rib 10 is connected to the inner ring of the sealing ring 9. The extended rib 10 fits tightly with the arc rib 7, further achieving a sealing effect, thereby preventing the entry of external dust and reducing the loss of internal grease, thereby ensuring the roller efficiency of the roller bearing.
[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A spherical roller bearing with good sealing effect, comprising an outer ring (3), characterized in that: Sealing grooves (5) are provided at both ends of the outer ring (3), a fixing groove (4) is provided inwardly at one end of the sealing groove (5), a sealing ring (9) is installed in the sealing groove (5), and an inner ring of the sealing ring (9) is fixedly connected to an extended rib (10); The sealing ring (9) has limit grooves (12) at both ends, one end of the limit groove (12) is fixedly connected to a spring (14), the other end of the spring (14) is fixedly connected to a limit plate (13), the other end of the limit plate (13) is fixedly connected to a fixed block (11), and the fixed block (11) penetrates the sealing ring (9) outwardly, the fixed block (11) corresponds to the fixed groove (4), and an inner ring (6) is installed on the inner side of the outer ring (3).
2. The spherical roller bearing with good sealing effect according to claim 1, characterized in that: Arc-shaped ribs (7) are provided at both ends of the inner ring (6), and the extended ribs (10) correspond to the arc-shaped ribs (7).
3. The spherical roller bearing with good sealing effect according to claim 1, characterized in that: The middle part of the outer ring (3) is movably connected to two rollers (2), and the middle part of the rollers (2) is fixedly connected to a fixing frame (1).
4. The spherical roller bearing with good sealing effect according to claim 1, characterized in that: Two raceways (8) are provided in the middle of the inner ring (6), and the rollers (2) roll inside the raceways (8).