Bearing with oil seal structure

Abstract

The utility model discloses a bearing with an oil seal structure, which comprises a bearing outer ring and a bearing inner ring, and further comprises an annular protecting cover arranged between the bearing outer ring and the bearing inner ring, a ball groove is enclosed between the bearing outer ring and the bearing inner ring, a ball rolls in the ball groove, and the oil seal structure is arranged in the ball groove. First annular opening grooves are formed in the positions, close to the inner circumferential outer wall, of the two opposite sides of the bearing outer ring, second annular opening grooves are formed in the positions, close to the outer circumferential outer wall, of the two opposite sides of the bearing inner ring, and the side, close to the outer ring, of the annular protection cover is attached to the first annular opening grooves and provided with annular movable sealing rings fixedly connected with the annular protection cover. The side, close to the inner ring, of the annular protecting cover is attached to the second annular opening groove, an annular fixed sealing ring fixed to the annular protecting cover is arranged at the second annular opening groove, the annular protecting cover is fixedly connected with the bearing inner ring, and a first annular protruding part and a second annular protruding part which are arranged around the axis of the annular protecting cover are fixed to the inner side of the annular protecting cover. The amount of oil reaching the sealing ring is greatly reduced, and reliable sealing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a bearing with an oil seal structure. Background Technique

[0002] A bearing is a component used to determine the relative movement position of a rotating shaft and other parts, and plays a role in supporting or guiding. The main function of a bearing is to support a rotating shaft or other moving bodies, guide rotational or translational motion, and bear the load transmitted from the shaft or parts on the shaft. Bearings are already indispensable basic components in contemporary mechanical equipment and are widely used in various industries of the national economy. Their accuracy, performance, life, and reliability play a decisive role in the accuracy, performance, life, and reliability of the main machine.

[0003] Currently, in order to prevent the leakage of lubricating oil inside the bearing, an oil seal is generally added at the inner and outer rings of the bearing. However, under the centrifugal force, the lubricating oil is directly thrown towards the oil seal, resulting in relatively high sealing requirements for the oil seal and a risk of liquid leakage. Content of the Utility Model

[0004] The purpose of this application is to provide a bearing with an oil seal structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, this application provides the following technical solution: A bearing with an oil seal structure includes an outer bearing ring and an inner bearing ring, and further includes an annular protective cover installed between the outer bearing ring and the inner bearing ring. A ball groove is enclosed between the outer bearing ring and the inner bearing ring, and balls roll in the ball groove. First annular open grooves are respectively opened at both opposite sides of the outer bearing ring near the inner peripheral outer wall, and second annular open grooves are respectively opened at both opposite sides of the inner bearing ring near the outer peripheral outer wall. One side of the annular protective cover close to its outer ring fits at the first annular open groove, and an annular dynamic seal ring fixedly connected to the annular protective cover is provided there. One side of the annular protective cover close to its inner ring fits at the second annular open groove, and an annular static seal ring fixed to the annular protective cover is provided there. The annular protective cover is fixedly connected to the inner bearing ring. A first annular protrusion and a second annular protrusion are fixedly installed on the inner side of the annular protective cover and are arranged around its axis. The first annular protrusion and the second annular protrusion are respectively in contact with the inner wall of the outer bearing ring and the outer wall of the inner bearing ring.

[0006] Preferably, the annular protective cover is detachably and fixedly connected to the inner bearing ring by screws.

[0007] Preferably, an oil injection nozzle is provided on one side of the annular protective cover.

[0008] Preferably, the annular protective cover is made of the same material as the inner bearing ring and the outer bearing ring.

[0009] Preferably, both the annular moving sealing ring and the annular fixed sealing ring are corrosion-resistant rubber rings.

[0010] In summary, the technical effects and advantages of the present utility model are as follows:

[0011] In the present utility model, by providing an annular moving sealing ring and an annular fixed sealing ring to seal the lubricating oil in the chamber where the ball is located, the splashing oil in the chamber where the ball is located will impact on the first annular convex part and the second annular convex part. The first annular convex part and the second annular convex part protect the annular moving sealing ring and the annular fixed sealing ring, reducing the sealing pressure of the annular moving sealing ring and the annular fixed sealing ring, thereby achieving efficient sealing. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of a bearing with an oil seal structure in an embodiment of the present application;

[0014] Figure 2 It is a schematic partial disassembled structural diagram of a bearing with an oil seal structure in an embodiment of the present application.

[0015] In the figure: 1. Bearing outer ring; 2. Bearing inner ring; 3. Ball groove; 4. Ball; 5. First annular open groove; 6. Second annular open groove; 7. Annular cover; 8. Annular moving sealing ring; 9. Annular fixed sealing ring; 10. Screw; 11. First annular convex part; 12. Second annular convex part; 13. Oil injection nozzle. Detailed Embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts fall within the protection scope of the present utility model.

[0017] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0018] It should also be noted that the standard parts used in this application document can all be purchased from the market, and can also be customized according to the description of the specification and the drawings. Unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. And without clear limitations, the machinery, parts and equipment can all adopt the conventional models in the prior art.

[0019] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0020] Example: Refer to Figure 1-2A bearing with an oil seal structure as shown includes an outer bearing ring 1 and an inner bearing ring 2, and further includes an annular cover 7 installed between the outer bearing ring 1 and the inner bearing ring 2. A ball groove 3 is enclosed between the outer bearing ring 1 and the inner bearing ring 2, and balls 4 roll in the ball groove 3. First annular open grooves 5 are provided on both opposite sides of the outer bearing ring 1 near the inner peripheral outer wall, and second annular open grooves 6 are provided on both opposite sides of the inner bearing ring 2 near the outer peripheral outer wall. One side of the annular cover 7 near its outer ring fits at the first annular open groove 5 and an annular dynamic seal ring 8 fixedly connected to the annular cover 7 is provided there. One side of the annular cover 7 near its inner ring fits at the second annular open groove 6 and an annular static seal ring 9 fixed to the annular cover 7 is provided there. The annular cover 7 is fixedly connected to the inner bearing ring 2. First annular protrusion 11 and second annular protrusion 12 arranged around its axis are fixedly installed on the inner side of the annular cover 7. The first annular protrusion 11 and the second annular protrusion 12 are respectively in contact with the inner wall of the outer bearing ring 1 and the outer wall of the inner bearing ring 2. In this new type, the annular dynamic seal ring 8 and the annular static seal ring 9 are provided to seal the lubricating oil in the chamber where the balls are located. The oil splashed in the chamber where the balls are located will impact on the first annular protrusion 11 and the second annular protrusion 12. The first annular protrusion 11 and the second annular protrusion 12 protect the annular dynamic seal ring 8 and the annular static seal ring 9, reducing the sealing pressure of the annular dynamic seal ring 8 and the annular static seal ring 9, thereby achieving efficient sealing.

[0021] With the above structure: The annular cover 7 is detachably and fixedly connected to the inner bearing ring 2 by screws 10.

[0022] With the above structure: An oil injection nozzle 13 is provided on one side of the annular cover 7 for facilitating the injection of lubricating oil.

[0023] With the above structure: The annular cover 7 is made of the same material as the inner bearing ring 2 and the outer bearing ring 1.

[0024] With the above structure: Both the annular dynamic seal ring 8 and the annular static seal ring 9 are corrosion-resistant rubber rings.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described 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 invention shall be included within the protection scope of the present invention.

Claims

1. A bearing with an oil seal structure, comprising an outer bearing ring (1) and an inner bearing ring (2), characterized in that: It also includes an annular cover (7) installed between the outer ring (1) and the inner ring (2) of the bearing. A ball groove (3) is enclosed between the outer ring (1) and the inner ring (2) of the bearing, and balls (4) roll in the ball groove (3). First annular open grooves (5) are formed on both opposite sides of the outer ring (1) near the inner peripheral outer wall, and second annular open grooves (6) are formed on both opposite sides of the inner ring (2) near the outer peripheral outer wall. One side of the annular cover (7) close to its outer ring fits at the first annular open groove (5), and an annular dynamic sealing ring (8) fixedly connected to the annular cover (7) is provided there. One side of the annular cover (7) close to its inner ring fits at the second annular open groove (6), and an annular static sealing ring (9) fixed to the annular cover (7) is provided there. The annular cover (7) is fixedly connected to the inner ring (2) of the bearing. A first annular protrusion (11) and a second annular protrusion (12) arranged around its axis are fixedly installed on the inner side of the annular cover (7). The first annular protrusion (11) and the second annular protrusion (12) are respectively in contact with the inner wall of the outer ring (1) and the outer wall of the inner ring (2).

2. The bearing with an oil seal structure according to claim 1, wherein: The annular cover (7) is detachably and fixedly connected to the inner ring (2) of the bearing through screws (10).

3. The bearing with an oil seal structure according to claim 1, characterized in that: One side of the annular cover (7) is provided with an oil injection nozzle (13).

4. A bearing with an oil seal structure according to claim 1, characterized in that: The annular cover (7) is made of the same material as the inner ring (2) and the outer ring (1) of the bearing.

5. The bearing with an oil seal structure according to claim 1, characterized in that: Both the annular dynamic sealing ring (8) and the annular static sealing ring (9) are corrosion-resistant rubber rings.

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