Dustproof bearing with sealing structure

Abstract

This utility model discloses a dustproof bearing with a sealing structure, specifically relating to the field of dustproof bearing technology. It includes an inner bearing ring, an outer bearing ring, rolling elements, and a cage. The rolling elements are mounted between the inner and outer bearing rings via the cage. The outer bearing ring has annular grooves on both its front and rear outer walls. A first sealing plate is fixed inside each of the two annular grooves, and a second sealing plate is located outside the first sealing plate. Each of the two second sealing plates has multiple limiting holes arranged in a circular array near the inner bearing ring. This utility model forms an effective seal between the inner and outer bearing rings through the first and second sealing plates, preventing external dust and impurities from entering the bearing, reducing wear on the inner and outer bearing rings and rolling elements, and extending service life. The rubber sealing rings can seal the gap between the second sealing plate and the shaft, achieving double sealing protection and better ensuring the cleanliness of the bearing's interior.

Description

Technical Field

[0001] This utility model relates to the field of dustproof bearing technology, and more specifically to a dustproof bearing with a sealing structure. Background Technology

[0002] Bearings are the supports for mechanical transmission shafts, often referred to as the "joints" of machines, and are a crucial component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. Existing bearings are classified according to their friction properties into rolling bearings and sliding bearings. Rolling bearings are precision mechanical components that convert the sliding friction between the rotating shaft and its housing into rolling friction, thereby reducing frictional losses; sliding bearings, on the other hand, generate direct or indirect sliding friction between the bearing and the supporting surface of the journal.

[0003] For example, the novel bearing with prior art publication number CN217682871U has the advantage of being maintenance-free, reducing equipment downtime, lowering mechanical maintenance costs, and eliminating environmental pollution from processing.

[0004] However, the existing technology described above still has the following problems when in use: When existing bearings are stored, because the inner and outer rings are directly exposed, dust and impurities in the air can drift into the space between them, causing wear on the rolling elements and affecting the bearing's service life. Based on this, this utility model provides a dustproof bearing with a sealing structure. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a dustproof bearing with a sealing structure. An effective seal is formed between the inner and outer rings of the bearing by a first sealing plate and a second sealing plate, preventing external dust and impurities from entering the bearing, reducing wear on the inner ring, outer ring, and rolling elements, and extending service life. A rubber sealing ring can seal the gap between the second sealing plate and the shaft, achieving double sealing protection and better ensuring the cleanliness of the bearing's interior, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dustproof bearing with a sealing structure, comprising an inner bearing ring, an outer bearing ring, rolling elements, and a cage. The rolling elements are mounted between the inner and outer bearing rings via the cage. Annular grooves are formed on both the front and rear outer walls of the outer bearing ring. A first sealing plate is fixedly installed inside each of the two annular grooves. A second sealing plate is provided outside the first sealing plate. Multiple limiting holes arranged in a circular array are formed on the side of each second sealing plate near the inner bearing ring. A limiting rod passes through each limiting hole, and the limiting rod is fixed to the inner bearing ring.

[0007] In a preferred embodiment, an annular groove is provided on the inner sidewall of the second sealing plate, and a rubber sealing ring is provided inside the annular groove. The rubber sealing ring can improve the sealing performance between the second sealing plate and the shaft.

[0008] In a preferred embodiment, each limiting hole has a threaded hole on its inner wall, and a fastening bolt is provided inside the threaded hole. One end of the fastening bolt contacts the outer wall of the limiting rod and is used to adjust the distance between the second sealing plate and the first sealing plate.

[0009] In a preferred embodiment, the outer walls of both first sealing plates are provided with a plurality of first receiving holes arranged in a ring array. The first receiving holes are provided with first bolts. The first sealing plates are detachably connected to the outer ring of the bearing by means of the first bolts. The first sealing plates are fixed to the outer ring of the bearing by means of the first bolts, which makes it easy for the staff to quickly disassemble the first sealing plates for replacement.

[0010] In a preferred embodiment, the outer walls of both second sealing plates are provided with a plurality of second receiving holes arranged in a ring array. The plurality of second receiving holes are spaced apart from the plurality of first receiving holes. Each second receiving hole is provided with a second bolt. The second sealing plate is detachably fixed to the bearing inner ring by the second bolt. The use of multiple second bolts to fix the second sealing plate can not only improve the connection between the second sealing plate and the bearing inner ring, but also facilitate the disassembly and replacement of the second sealing plate.

[0011] In a preferred embodiment, two symmetrical levers are fixedly provided on the outer walls of the first sealing plate and the second sealing plate, which facilitates workers to quickly pick up the first sealing plate and the second sealing plate and improves disassembly efficiency.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model forms an effective seal between the inner and outer rings of the bearing by setting a first sealing plate and a second sealing plate that fit together. This seal prevents external dust and impurities from entering the bearing, reduces wear on the inner and outer rings and rolling elements, and extends the overall service life. At the same time, the rubber sealing ring set in the annular groove can further seal the gap between the second sealing plate and the shaft, preventing impurities from entering the inner ring of the bearing. This achieves double sealing protection and better ensures the cleanliness of the bearing.

[0014] 2. By adjusting the gap between the second sealing plate and the first sealing plate, the rotating second sealing plate can be prevented from contacting and rubbing against the stationary first sealing plate, thereby preventing sealing failure due to wear. Even if a small gap is formed between the two after adjustment, their mutually cooperating structural design can effectively block larger particles of impurities from entering and maintain the basic dustproof effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the inner ring and outer ring of the bearing according to this utility model.

[0018] Figure 4 This is a schematic diagram of the first sealing plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the second sealing plate of this utility model;

[0020] Figure 6 This is a cross-sectional view of the second sealing plate of this utility model.

[0021] The attached figures are labeled as follows: 1. Inner ring of bearing; 2. Outer ring of bearing; 3. Rolling element; 4. Cage; 5. Annular groove; 6. First sealing plate; 7. Second sealing plate; 8. Limiting hole; 9. Limiting rod; 10. Annular groove; 11. Rubber sealing ring; 12. Threaded hole; 13. Fastening bolt; 14. First receiving hole; 15. First bolt; 16. First receiving hole; 17. Second bolt; 18. Lever. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Refer to the instruction manual appendix Figures 1-6 This utility model provides a dustproof bearing with a sealing structure, including an inner bearing ring 1, an outer bearing ring 2, rolling elements 3 and a cage 4. The rolling elements 3 are installed between the inner bearing ring 1 and the outer bearing ring 2 through the cage 4. The outer bearing ring 2 has annular grooves 5 on both the front and rear outer walls. A first sealing plate 6 is fixedly installed inside each of the two annular grooves 5. A second sealing plate 7 is installed on the outside of the first sealing plate 6.

[0024] Both second sealing plates 7 have multiple limiting holes 8 arranged in a ring array on the side near the inner ring 1 of the bearing. Each limiting hole 8 has a limiting rod 9 passing through it. The limiting rod 9 is fixed on the inner ring 1 of the bearing. Each limiting hole 8 has a threaded hole 12 on its inner wall. The threaded hole 12 has a fastening bolt 13 inside it. One end of the fastening bolt 13 contacts the outer wall of the limiting rod 9.

[0025] The inner wall of the second sealing plate 7 is provided with an annular groove 10, and a rubber sealing ring 11 is provided inside the annular groove 10.

[0026] In practical use, by setting a first sealing plate 6 and a second sealing plate 7 between the inner ring 1 and the outer ring 2 of the bearing, when the second sealing plate 7 and the first sealing plate 6 are tightly fitted, they can form an effective seal in the gap between the inner ring 1 and the outer ring 2 of the bearing, preventing external dust and impurities from entering the bearing, thereby reducing the wear of the inner ring 1, the outer ring 2 and the rolling elements 3, and extending the overall service life. At the same time, a rubber sealing ring 11 is provided in the annular groove 10 on the second sealing plate 7. This sealing ring is in close contact with the outer wall of the shaft, which can further seal the gap between the shaft and the second sealing plate 7, preventing impurities from entering the inner ring 1 of the bearing from this weak part. The bearing is protected by a double seal, which further ensures the cleanliness of the bearing. In addition, it is important to note that when the shaft drives the inner ring 1 of the bearing to rotate, the fastening bolts 13 on the second sealing plate 7 should be loosened first, and the second sealing plate 7 should be pulled to separate it from the first sealing plate 6. Then the fastening bolts 13 should be tightened again to complete the fixation. This can prevent the rotating second sealing plate 7 from contacting and rubbing against the stationary first sealing plate 6, which would cause wear and sealing failure. Even if a small gap is formed between the first sealing plate 6 and the second sealing plate 7 after separation, the structural cooperation between the two can still block larger particles of impurities from entering to a certain extent and maintain the basic dustproof effect.

[0027] Refer to the instruction manual appendix Figure 1 and Figure 4 Both first sealing plates 6 have multiple first storage holes 14 arranged in a ring array on their outer walls. First bolts 15 are provided inside the first storage holes 14. The first sealing plates 6 are detachably connected to the bearing outer ring 2 by the first bolts 15. The first sealing plates 6 and the bearing outer ring 2 are fixed by the first bolts 15, which makes it easy for the staff to quickly disassemble the first sealing plates 6 for replacement.

[0028] like Figure 1 and Figure 5As shown, the outer walls of the two second sealing plates 7 are provided with a plurality of second storage holes 16 arranged in a ring array. The plurality of second storage holes 16 are spaced apart from the plurality of first storage holes 14. Each second storage hole 16 is provided with a second bolt 17. The second sealing plate 7 is detachably fixed to the bearing inner ring 1 by means of the second bolt 17. Using multiple second bolts 17 to fix the second sealing plate 7 can not only improve the connection between the second sealing plate 7 and the bearing inner ring 1, but also facilitate the disassembly and replacement of the second sealing plate 7.

[0029] Furthermore, two symmetrical levers 18 are fixedly provided on the outer walls of the first sealing plate 6 and the second sealing plate 7. The levers 18 facilitate workers to quickly pick up the first sealing plate 6 and the second sealing plate 7, thereby improving disassembly efficiency.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof bearing with a sealing structure, comprising an inner bearing ring (1), an outer bearing ring (2), rolling elements (3), and a cage (4), wherein the rolling elements (3) are mounted between the inner bearing ring (1) and the outer bearing ring (2) via the cage (4), characterized in that: The outer ring (2) of the bearing has annular grooves (5) on both the front and rear sides of its outer wall. A first sealing plate (6) is fixedly installed inside each of the two annular grooves (5), and a second sealing plate (7) is installed on the outside of the first sealing plate (6). Both second sealing plates (7) have multiple limiting holes (8) arranged in a ring array on the side near the bearing inner ring (1). Each limiting hole (8) has a limiting rod (9) passing through it, and the limiting rod (9) is fixed on the bearing inner ring (1).

2. A dustproof bearing with a sealing structure according to claim 1, characterized in that: The inner wall of the second sealing plate (7) is provided with an annular groove (10), and a rubber sealing ring (11) is provided inside the annular groove (10).

3. A dustproof bearing with a sealing structure according to claim 1, characterized in that: Each limiting hole (8) has a threaded hole (12) on its inner wall, and a fastening bolt (13) is provided inside the threaded hole (12). One end of the fastening bolt (13) is in contact with the outer wall of the limiting rod (9).

4. A dustproof bearing with a sealing structure according to claim 1, characterized in that: Both first sealing plates (6) have multiple first storage holes (14) arranged in a ring array on their outer walls. The first storage holes (14) are provided with first bolts (15). The first sealing plates (6) are detachably connected to the bearing outer ring (2) through the first bolts (15).

5. A dustproof bearing with a sealing structure according to claim 3, characterized in that: The outer walls of the two second sealing plates (7) are provided with multiple second storage holes (16) arranged in a ring array. The multiple second storage holes (16) are distributed at intervals with the multiple first storage holes (14). Each second storage hole (16) is provided with a second bolt (17). The second sealing plate (7) is detachably fixed to the bearing inner ring (1) by the second bolt (17).

6. A dustproof bearing with a sealing structure according to claim 1, characterized in that: Two symmetrical levers (18) are fixedly provided on the outer wall of the first sealing plate (6) and the outer wall of the second sealing plate (7).

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