Sealing device for bearing

Abstract

The utility model relates to the technical field of bearings, and discloses a sealing device for a bearing, which comprises a lower shell, the top of the lower shell is fixedly connected with a sealing strip, the inner part of the lower shell is fixedly connected with a protective shell I, the surface of the protective shell I is provided with a plurality of circular arcs I, the top of the sealing strip is slidably connected with an upper shell, and the upper shell is provided with a plurality of circular arcs II. A second protection shell is fixedly connected to the interior of the upper shell, a plurality of second arcs are formed in the surface of the second protection shell, a clamping assembly is fixedly connected to the bottom of the upper shell, balls are rotationally connected to the interiors of the first arcs, outer rings are rotationally connected to the outer ends of the balls, and inner rings are rotationally connected to the inner ends of the balls; and a plurality of notches are formed in the lower shell. According to the bearing, the balls and other parts of the bearing are completely sealed in the shell, so that external dust, moisture and other pollutants can be effectively prevented from entering the bearing, and the bearing is protected from being polluted and abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a sealing device for bearings. Background Art

[0002] The sealing device of the bearing plays an important role in protecting the bearing, extending its service life, improving the reliability of the equipment and reducing the maintenance cost. Selecting the appropriate type of sealing device according to specific usage conditions and requirements is crucial for ensuring the normal operation of the bearing and the equipment.

[0003] In some existing bearings, due to the lack of sealing effect, dust, moisture and other sundries may intrude, resulting in the loss of lubricant inside the bearing, which will exacerbate the wear of components. This will not only affect the normal operation of the bearing, but also significantly shorten its service life. To make up for the poor sealing performance, more frequent maintenance and lubrication are required, which will increase the frequency and cost of maintenance. Therefore, a sealing device for bearings is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a sealing device for bearings, aiming to improve the problem of poor sealing effect in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A sealing device for bearings includes a lower shell, a sealing strip is fixedly connected to the top of the lower shell, a first protective shell is fixedly connected to the inside of the lower shell, a plurality of first arcs are formed on the surface of the first protective shell, an upper shell is slidably connected to the top of the sealing strip, a second protective shell is fixedly connected to the inside of the upper shell, a plurality of second arcs are formed on the surface of the second protective shell, a clamping component is fixedly connected to the bottom of the upper shell, a plurality of balls are rotatably connected inside the first arcs, an outer ring is rotatably connected to the outer end of the ball, an inner ring is rotatably connected to the inner end of the ball, and a plurality of notches are formed inside the lower shell;

[0007] As a further description of the above technical solution:

[0008] The clamping component includes a plurality of hollow columns, the outer sides of the plurality of hollow columns are fixedly connected to the inside of the upper shell, a sliding rod is slidably connected to the inside of the hollow column, a rotating rod is fixedly connected to the inside of the sliding rod, a limiting plate is rotatably connected to the outside of the rotating rod, a contracting rod is fixedly connected to the inside of the limiting plate, and a spring is fixedly connected to the inner side of the limiting plate;

[0009] As a further description of the above technical solution:

[0010] An arc is provided inside the notch, and the inside of the notch is slidably connected to the outside of the sliding rod;

[0011] As a further description of the above technical solution:

[0012] The inside of the arc is slidably connected to the outside of the limiting plate;

[0013] As a further description of the above technical solution:

[0014] The inside of the lower shell is slidably connected to the outside of the outer ring, and the inside of the lower shell is slidably connected to the outside of the inner ring;

[0015] As a further description of the above technical solution:

[0016] The inside of the upper shell is slidably connected to the outside of the outer ring, and the inside of the upper shell is slidably connected to the outside of the inner ring;

[0017] As a further description of the above technical solution:

[0018] A plurality of holes are provided on the surface of the sealing strip, and the inside of the plurality of holes is coupled to the outside of the hollow column;

[0019] As a further description of the above technical solution:

[0020] One end of the spring is fixedly connected to the inside of the sliding rod, and one end of the retractable rod is fixedly connected to the inside of the sliding rod.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by manually putting the ball into the inside of the lower shell and then buckling the upper shell and the lower shell, the sealing of the bearing can be realized. By completely enclosing the ball and other components of the bearing inside the housing, it can effectively prevent external dust, moisture and other pollutants from entering the bearing, thereby protecting the bearing from pollution and wear.

[0023] 2. In the utility model, by rotating the upper shell to drive the hollow column, the hollow column drives the sliding rod and then drives the limiting plate through the sliding rod, thereby realizing an automatic locking and unlocking mechanism. The user can complete the locking or unlocking of the bearing sealing device only through a simple rotation action, without using additional tools or complex operation steps, improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of a sealing device for a bearing proposed by the utility model;

[0025] Figure 2Schematic diagram of the outer ring of a sealing device for a bearing proposed by the present utility model;

[0026] Figure 3 Schematic diagram of the first protective shell of a sealing device for a bearing proposed by the present utility model;

[0027] Figure 4 Schematic diagram of the upper shell of a sealing device for a bearing proposed by the present utility model;

[0028] Figure 5 Schematic diagram of the limiting plate of a sealing device for a bearing proposed by the present utility model.

[0029] Legend:

[0030] 1. Lower shell; 2. Sealing strip; 3. First protective shell; 4. First arc; 5. Outer ring; 6. Radian; 7. Limiting plate; 8. Spring; 9. Shrinkage rod; 10. Hollow column; 11. Sliding rod; 12. Notch; 13. Ball; 14. Inner ring; 15. Rotating rod; 16. Upper shell; 17. Second protective shell; 18. Second arc. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figures 1 to 3 , a sealing device for a bearing, including a lower shell 1. A sealing strip 2 is fixedly connected to the top of the lower shell 1. The lower shell 1 is made of a strong and corrosion-resistant metal material, which can effectively resist the erosion of external environmental factors on the sealing device and ensure the durability of the device. A sealing strip 2 is fixedly connected to the top of the lower shell 1. The sealing strip 2 is made of a soft and good-sealing rubber, which can closely fit the upper shell 16 to prevent impurities such as dust and moisture from entering the inside of the sealing device and ensure the normal operation of the internal components. A first protective shell 3 is fixedly connected to the inside of the lower shell 1. A plurality of first arcs 4 are provided on the surface of the first protective shell 3. The first protective shell 3 is made of wear-resistant engineering plastic material, which can provide stable support and protection for the internal components and prevent components such as balls 13 from being subjected to unnecessary collisions and frictions.

[0033] The surface of the first protective shell 3 is provided with a plurality of first arcs 4. The design of the first arcs 4 is adapted to the shape of the ball 13, enabling the ball 13 to rotate smoothly therein and reducing energy loss. The top of the sealing strip 2 is slidably connected with an upper shell 16. Inside the upper shell 16, a second protective shell 17 is fixedly connected. The surface of the second protective shell 17 is provided with a plurality of second arcs 18. The upper shell 16 is also made of corrosion-resistant metal material and matches the lower shell 1 to ensure the integrity and stability of the entire sealing device structure. Inside the upper shell 16, a second protective shell 17 is fixedly connected. The second protective shell 17 is made of high-strength plastic material, which can cooperate with the first protective shell 3 to protect the ball 13 in all directions and prevent the ball 13 from being dislocated during high-speed rotation.

[0034] The surface of the second protective shell 17 is provided with a plurality of second arcs 18. The second arcs 18 correspond to the first arcs 4, can better fit the ball 13, ensure the stability of the ball 13 during rotation, and improve the rotation accuracy of the bearing. The bottom of the upper shell 16 is fixedly connected with a clamping component, which can firmly connect the upper shell 16 and the lower shell 1 together to prevent them from accidentally separating during use. A plurality of first arcs 4 are internally rotatably connected with balls 13. The outer ends of the balls 13 are rotatably connected with an outer ring 5. The inside of the upper shell 16 is slidably connected to the outside of the outer ring 5. The inside of the lower shell 1 is slidably connected to the outside of the outer ring 5. The balls 13 are high-precision steel balls with their surfaces finely polished. Such high-precision balls 13 can reduce the friction with the outer ring 5 and the inner ring 14, improve the rotation efficiency of the bearing, and can withstand large pressures.

[0035] The outer ends of the balls 13 are rotatably connected with an outer ring 5. The tight rotational connection between the balls 13 and the outer ring 5 enables the outer ring 5 to rotate smoothly and evenly transfer the external force to the balls 13. The inside of the upper shell 16 is slidably connected to the outside of the outer ring 5. This sliding connection method provides a suitable moving space for the outer ring 5 to ensure that the outer ring 5 will not be hindered during rotation. The inside of the lower shell 1 is slidably connected to the outside of the outer ring 5, which also provides a rotating space for the outer ring 5 and can limit the position of the outer ring 5 to prevent it from shifting.

[0036] The inner ends of the balls 13 are rotatably connected with an inner ring 14. The inside of the lower shell 1 is slidably connected to the outside of the inner ring 14. The inside of the upper shell 16 is slidably connected to the outside of the inner ring 14. The rotational connection between the balls 13 and the inner ring 14 ensures that the inner ring 14 can rotate flexibly, and the inner ring 14 can drive other components to work together during rotation. The inside of the lower shell 1 is slidably connected to the outside of the inner ring 14. The lower shell 1 provides stable support and a rotating space for the inner ring 14. The inside of the upper shell 16 is slidably connected to the outside of the inner ring 14. The upper shell 16 and the lower shell 1 work together to ensure the normal rotation of the inner ring 14.

[0037] Multiple notches 12 are provided inside the lower shell 1. An arc 6 is provided inside the notch 12. The inside of the notch 12 is slidably connected to the outside of the sliding rod 11. The notch 12 provides accurate positioning for the installation and connection of subsequent components, ensuring that each component can be accurately assembled together. An arc 6 is provided inside the notch 12. The shape of the arc 6 is carefully designed to guide the limiting plate 7 to move along a predetermined trajectory, ensuring the accuracy of the clamping process. The inside of the notch 12 is slidably connected to the outside of the sliding rod 11. This sliding connection allows the sliding rod 11 to move stably within the notch 12, providing power transmission for the operation of the entire clamping device.

[0038] Refer to Figure 4 , Figure 5 , the clamping assembly includes a plurality of hollow columns 10. A plurality of holes are provided on the surface of the sealing strip 2. The inside of the plurality of holes is coupled to the outside of the hollow column 10. The hollow column 10 is made of metal and has high strength, capable of withstanding a certain amount of tensile and compressive forces, ensuring the stability of the connection between the upper shell 16 and the lower shell 1. A plurality of holes are provided on the surface of the sealing strip 2. The design of these holes helps the hollow column 10 to be accurately inserted therein, achieving the precise connection between the upper shell 16 and the lower shell 1. The inside of the plurality of holes is coupled to the outside of the hollow column 10. This coupling connection enhances the tightness of the connection between the upper shell 16 and the lower shell 1, preventing loosening during use.

[0039] The outside of the plurality of hollow columns 10 is fixedly connected to the inside of the upper shell 16. A sliding rod 11 is slidably connected inside the hollow column 10. A rotating rod 15 is fixedly connected inside the sliding rod 11. A limiting plate 7 is rotatably connected to the outside of the rotating rod 15. The inside of the arc 6 is slidably connected to the outside of the limiting plate 7. A contraction rod 9 is fixedly connected inside the limiting plate 7. A spring 8 is fixedly connected to the inner side of the limiting plate 7. One end of the spring 8 is fixedly connected inside the sliding rod 11. One end of the contraction rod 9 is fixedly connected inside the sliding rod 11. The hollow column 10 provides a reliable connection point for the upper shell 16, ensuring the stability of the structure of the upper shell 16. A sliding rod 11 is slidably connected inside the hollow column 10. The sliding of the sliding rod 11 within the hollow column 10 can achieve the clamping and unlocking operations, ensuring the operability of the entire sealing device.

[0040] Inside the sliding rod 11, there is a fixedly connected rotating rod 15. The rotating rod 15 can transmit the external rotating power to the limiting plate 7 to ensure that the limiting plate 7 can rotate smoothly. The limiting plate 7 is rotatably connected to the outer side of the rotating rod 15. Driven by the rotating rod 15, the limiting plate 7 can rotate within the radian 6, thus realizing the functions of clamping and unlocking. The radian 6 is slidably connected to the outer side of the limiting plate 7. This sliding connection ensures that the limiting plate 7 can move accurately along the radian 6. Inside the limiting plate 7, there is a fixedly connected retractable rod 9. The retractable rod 9 can adjust the position of the limiting plate 7 to ensure the accuracy of the limiting plate 7 during the clamping process.

[0041] On the inner side of the limiting plate 7, there is a fixedly connected spring 8. The spring 8 provides an elastic force for the limiting plate 7 to pop outwards, ensuring the firm connection between the upper shell 16 and the lower shell 1 and preventing loosening of the connection due to external factors such as vibration. One end of the spring 8 is fixedly connected inside the sliding rod 11. The spring 8 can provide a restoring force for the sliding rod 11 to ensure that the sliding rod 11 can return to its initial position after operation. One end of the retractable rod 9 is fixedly connected inside the sliding rod 11. The retractable rod 9 and the spring 8 work together to ensure the normal operation of the entire clamping assembly.

[0042] Working principle: When the staff needs to seal the bearing, the outer ring 5, the rolling balls 13, and the inner ring 14 can be placed inside the lower shell 1. The top of the lower shell 1 is fixedly connected with a sealing strip 2. Inside the lower shell 1, there is a fixedly connected arc one 4. On the surface of the arc one 4, there is a protective shell one 3, which can be used to fit the rolling balls 13. The two ends of the rolling balls 13 will not hinder the rotation of the rolling balls 13. When the rolling balls 13 are completely fitted to the protective shell one 3, the upper shell 16, together with the protective shell two 17 and the arc two 18, can clamp the rolling balls 13 in the middle. The upper shell 16 will fit with the sealing strip 2 to achieve a sealing effect;

[0043] At the bottom of the upper shell 16, there is a fixedly connected hollow column 10. When the upper shell 16 and the lower shell 1 want to fit together, the hollow column 10 must enter the inside of the notch 12. After the hollow column 10 enters the inside of the notch 12, the limiting plate 7 inside the sliding rod 11 can be ejected by rotating the upper shell 16. Under normal circumstances, the limiting plate 7 will be pushed outwards by the spring 8 behind it. When the hollow column 10 enters the inside of the notch 12, the limiting plate 7 will compress the spring 8 inwards due to the narrow space inside the notch 12. When the upper shell 16 is rotated, the limiting plate 7 will rotate along the inner space of the radian 6. The radian 6 is set to be deeper at one end and flush with the inside of the notch 12 at the other end. Therefore, the limiting plate 7 can be pushed out by the spring 8 after rotating to a certain position, thus preventing the connection between the upper shell 16 and the lower shell 1 from separating due to external factors.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealing device for a bearing, comprising a lower housing (1), characterized in that: A sealing strip (2) is fixedly connected to the top of the lower shell (1). A first protective shell (3) is fixedly connected inside the lower shell (1). A plurality of first arcs (4) are formed on the surface of the first protective shell (3). The upper shell (16) is slidably connected to the top of the sealing strip (2). A second protective shell (17) is fixedly connected inside the upper shell (16). A plurality of second arcs (18) are formed on the surface of the second protective shell (17). A clamping component is fixedly connected to the bottom of the upper shell (16). A ball (13) is rotatably connected inside each of the plurality of first arcs (4). The outer end of the ball (13) is rotatably connected to an outer ring (5). The inner end of the ball (13) is rotatably connected to an inner ring (14). A plurality of notches (12) are formed inside the lower shell (1).

2. The sealing device for a bearing according to claim 1, wherein: The clamping component includes a plurality of hollow columns (10). The outer sides of the plurality of hollow columns (10) are fixedly connected inside the upper shell (16). A sliding rod (11) is slidably connected inside the hollow column (10). A rotating rod (15) is fixedly connected inside the sliding rod (11). A limiting plate (7) is rotatably connected to the outer side of the rotating rod (15). A retracting rod (9) is fixedly connected inside the limiting plate (7). A spring (8) is fixedly connected to the inner side of the limiting plate (7).

3. A sealing device for a bearing according to claim 2, characterized in that: An arc (6) is formed inside the notch (12). The notch (12) is slidably connected to the outer side of the sliding rod (11).

4. A sealing device for a bearing according to claim 3, characterized in that: The arc (6) is slidably connected to the outer side of the limiting plate (7).

5. A sealing device for a bearing according to claim 1, characterized in that: The inside of the lower shell (1) is slidably connected to the outside of the outer ring (5). The inside of the lower shell (1) is slidably connected to the outside of the inner ring (14).

6. A sealing device for a bearing according to claim 1, characterized in that: The inside of the upper shell (16) is slidably connected to the outside of the outer ring (5). The inside of the upper shell (16) is slidably connected to the outside of the inner ring (14).

7. A sealing device for a bearing according to claim 2, characterized in that: A plurality of holes are formed on the surface of the sealing strip (2). The plurality of holes are coupled to the outside of the hollow column (10).

8. A sealing device for a bearing according to claim 3, characterized in that: The inside of the sliding rod (11) is fixedly connected to one end of the spring (8). The inside of the sliding rod (11) is fixedly connected to one end of the retracting rod (9).

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