Bearing with embedded bearing sealing element

Abstract

The utility model discloses a bearing with an embedded bearing sealing element, and relates to the technical field of bearings. Comprising a bearing outer ring, the outer wall of the bearing outer ring is fixedly connected with a protection device, the outer wall of a ball is in rolling connection with a bearing inner ring and a sealing device, the sealing device comprises a second sealing lip, the inner wall of the second sealing lip is provided with a liquid conveying pipe, and the outer wall of the second sealing lip is fixedly connected with a liquid storage ring; the outer wall of the second sealing lip is fixedly connected with a reset spring, and the end, away from the second sealing lip, of the reset spring is fixedly connected with a first sealing lip. When the first sealing lip is extruded, the first sealing lip moves towards the direction of a ball in the bearing so as to extrude the liquid storage ring.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a bearing with an embedded bearing seal. Background Technology

[0002] In the field of mechanical transmission, bearings are key components whose performance directly affects the operational stability and service life of equipment. Traditional bearings face numerous challenges in practical applications.

[0003] However, in terms of sealing, the common single-seal bearing structure in existing technology has limited sealing effect and is difficult to effectively prevent the intrusion of various impurities and moisture. When the equipment is in a harsh working environment, such as a dusty, humid or oily environment, impurities and moisture can easily enter the bearing, leading to accelerated ball wear, reduced lubrication performance, and thus shortening the bearing's service life, increasing equipment maintenance costs and downtime. While some bearings with double-seal structures improve sealing performance to a certain extent, the contact area between the sealing lip and the inner ring of the bearing is large, resulting in greater friction. This not only consumes additional energy but also causes the bearing to heat up, further affecting its performance and lifespan. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a bearing with an embedded bearing seal, which solves the problem of limited sealing effect in common single-seal bearings.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bearing with an embedded bearing seal. It includes: a bearing outer ring, a protective device fixedly connected to the outer wall of the bearing outer ring, balls rollingly connected to the inner wall of the bearing outer ring, a cage slidably connected to the outer wall of the balls, an inner bearing ring rollingly connected to the outer wall of the balls, and a sealing device. The sealing device includes a second sealing lip, an infusion tube formed on the inner wall of the second sealing lip, a reservoir ring fixedly connected to the outer wall of the second sealing lip, and a return spring fixedly connected to the outer wall of the second sealing lip. A first sealing lip is fixedly connected to the end of the return spring away from the second sealing lip, and the position of the balls is restricted by the cage.

[0008] Preferably, the second sealing lip is made of fluororubber, and the first sealing lip is made of nitrile rubber. The outer wall of the second sealing lip is engaged with the inner wall of the bearing outer ring, and the outer wall of the first sealing lip is connected to the inner wall of the bearing outer ring. The double sealing lip design improves the sealing performance of the bearing.

[0009] Preferably, the protective device includes a sealing cover, the outer wall of which is threadedly connected with a fixing bolt, the outer wall of which is fixedly connected to the outer wall of the bearing outer ring by the fixing bolt, the outer wall of which is threadedly connected to the outer wall of the bearing outer ring, the outer wall of which is connected to the outer wall of the first sealing lip, and the position of the sealing cover is restricted by the fixing bolt.

[0010] (III) Beneficial Effects

[0011] This utility model provides a bearing with an embedded bearing seal. It offers the following advantages:

[0012] (i) The bearing with embedded bearing seal, by setting a sealing device, adopts a double sealing structure of a first sealing lip and a second sealing lip. The first sealing lip has a V-shaped cross section, which reduces the contact area with the inner ring of the bearing while ensuring sealing performance, reducing friction and extending the service life of the bearing. The cavity between the two sealing lips can effectively intercept a small amount of impurities that break through the first sealing lip and prevent them from entering the bearing.

[0013] (ii) This bearing with embedded bearing seal can be pre-filled with lubricating oil during the bearing installation stage by setting a reservoir ring. When the ball bearing is not sufficiently lubricated, simply loosen the fixing bolts, remove the sealing cover, press the first sealing lip to squeeze the reservoir ring, and lubricating oil can be injected into the ball bearing through the infusion tube. The operation is simple and convenient, making it easy to complete lubrication and maintenance operations, reducing downtime and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the present invention;

[0017] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A;

[0018] Figure 5 This is a schematic diagram of the structure of the protective device of this utility model;

[0019] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point B.

[0020] In the diagram: 1. Bearing outer ring; 2. Bearing inner ring; 3. Sealing device; 4. Protective device; 5. Ball bearing; 6. Cage; 31. Second sealing lip; 32. First sealing lip; 33. Liquid reservoir ring; 34. Return spring; 35. Infusion tube; 41. Sealing cap; 42. Fixing bolt. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figure 1-6 This utility model provides a technical solution: a bearing with an embedded bearing seal, comprising: a bearing outer ring 1, a protective device 4 fixedly connected to the outer wall of the bearing outer ring 1, balls 5 rollingly connected to the inner wall of the bearing outer ring 1, a cage 6 slidably connected to the outer wall of the balls 5, a bearing inner ring 2 rollingly connected to the outer wall of the balls 5, and a sealing device 3, including a second sealing lip 31, an infusion tube 35 formed on the inner wall of the second sealing lip 31, and a liquid storage ring 33 fixedly connected to the outer wall of the second sealing lip 31. A return spring 34 is connected, and the end of the return spring 34 away from the second sealing lip 31 is fixedly connected to the first sealing lip 32. The cross-section of the first sealing lip 32 is designed in a V-shape, which ensures that its sealing performance is not affected. At the same time, the V-shape reduces the contact area with the inner ring 2 of the bearing, thus reducing friction. Through the double sealing structure design of the first sealing lip 32 and the second sealing lip 31, there is a cavity between the first sealing lip 31 and the second sealing lip 32. When a small amount of impurities breaks through the first sealing lip 32, they will be intercepted in this cavity and prevented from entering the bearing.

[0023] The second sealing lip 31 is made of fluororubber, and the first sealing lip 32 is made of nitrile rubber. The outer wall of the second sealing lip 31 is engaged with the inner wall of the outer ring 1 of the bearing, and the outer wall of the first sealing lip 32 is connected to the inner wall of the outer ring 1 of the bearing. The first sealing lip 32 is made of nitrile rubber, which has good oil resistance, wear resistance and abrasion resistance, and can withstand large radial sealing pressure. It is suitable for blocking larger particles of impurities and dust. The second sealing lip 31 is made of fluororubber, which is soft and has good resilience. This allows the second sealing lip 31 to fit tightly against the rotating parts of the bearing, further preventing the intrusion of small particles and moisture, and achieving a more precise seal.

[0024] The protective device 4 includes a sealing cover 41. The outer wall of the sealing cover 41 is threaded with a fixing bolt 42. The outer wall of the sealing cover 41 is fixedly connected to the outer wall of the bearing outer ring 1 by the fixing bolt 42. The outer wall of the fixing bolt 42 is threadedly connected to the outer wall of the bearing outer ring 1. The outer wall of the sealing cover 41 is connected to the outer wall of the first sealing lip 32. By setting the sealing cover 41, the sealing cover 41 is fixed to the outer wall of the bearing outer ring 1, protecting the sealing device 3 inside the bearing, so that the internal structure of the bearing is not easily damaged.

[0025] During use, during the installation of the bearing, an appropriate amount of lubricating oil needs to be injected into the reservoir ring 33 of the sealing device 3 first, and then the bearing components are installed in sequence. The inner wall of the outer ring 1 of the bearing is connected to the inner ring 2 of the bearing by the ball 5. The ball 5 is constrained by the cage 6 to make it roll in an orderly manner.

[0026] When the bearing is put into use, under the condition of working in a harsh environment for a long time, the internal balls 5 may be insufficiently lubricated. At this time, first loosen the fixing bolts 42 on the outer wall of the sealing cover 41 in the protection device 4, then remove the sealing cover 41, and then press the first sealing lip 32 in the sealing device 3 towards the inner balls 5 of the bearing. When the first sealing lip 32 is squeezed, it will move towards the inner balls 5 of the bearing, thereby squeezing the liquid storage ring 33.

[0027] After the reservoir ring 33 is squeezed, the internal lubricating oil will be injected into the ball bearing 5 through the infusion tube 35 opened on the inner wall of the second sealing lip 31, thereby achieving lubrication of the ball bearing 5. After the lubricating oil injection is completed, the first sealing lip 32 is released. At this time, under the elastic action of the return spring 34, the first sealing lip 32 will return to the initial position. Finally, the sealing cover 41 is reinstalled back to the outer wall of the bearing outer ring 1 by the fixing bolt 42, completing one lubrication maintenance operation of the bearing.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing with an embedded bearing seal, characterized in that, include: The outer ring (1) of the bearing is fixedly connected to a protective device (4), the inner wall of the outer ring (1) of the bearing is rolledly connected to a ball (5), the outer wall of the ball (5) is slidably connected to a cage (6), and the outer wall of the ball (5) is rolledly connected to a bearing inner ring (2). The sealing device (3) includes a second sealing lip (31), an infusion tube (35) is provided on the inner wall of the second sealing lip (31), a reservoir ring (33) is fixedly connected to the outer wall of the second sealing lip (31), a return spring (34) is fixedly connected to the outer wall of the second sealing lip (31), and a first sealing lip (32) is fixedly connected to the end of the return spring (34) away from the second sealing lip (31).

2. A bearing with an embedded bearing seal according to claim 1, characterized in that: The second sealing lip (31) is made of fluororubber, and the first sealing lip (32) is made of nitrile rubber.

3. A bearing with an embedded bearing seal according to claim 1, characterized in that: The outer wall of the second sealing lip (31) is engaged with the inner wall of the bearing outer ring (1), and the outer wall of the first sealing lip (32) is connected to the inner wall of the bearing outer ring (1).

4. A bearing with an embedded bearing seal according to claim 1, characterized in that: The protective device (4) includes a sealing cover (41), and the outer wall of the sealing cover (41) is threaded with a fixing bolt (42).

5. A bearing with an embedded bearing seal according to claim 4, characterized in that: The outer wall of the sealing cap (41) is fixedly connected to the outer wall of the bearing outer ring (1) by a fixing bolt (42), and the outer wall of the fixing bolt (42) is threadedly connected to the outer wall of the bearing outer ring (1).

6. A bearing with an embedded bearing seal according to claim 4, characterized in that: The outer wall of the sealing cap (41) is connected to the outer wall of the first sealing lip (32).

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