Bearing seat structure capable of preventing oil leakage

Abstract

The utility model relates to the technical field of bearing seat structures, and discloses a bearing seat structure capable of preventing oil leakage, which comprises an external bearing ring, an internal bearing ring and a ball arranged between the external bearing ring and the internal bearing ring, a bearing shell is arranged on the outer wall of the external bearing ring, so that a bearing seat is formed, and the ball is arranged in the bearing seat. A bearing seat is arranged in the bearing shell, a rotating shaft is movably arranged on the bearing seat, a shaft hole is formed in one side of the bearing shell, a sealing cover plate matched with the shaft hole is fixedly installed on the shaft hole, a framework oil seal is arranged on the inner hole wall of the sealing cover plate, and one end of the rotating shaft penetrates through the sealing cover plate and extends into the bearing shell. According to the utility model, the oil film formed between the oil seal and the shaft is controlled by the cutting edge of the oil seal, the oil film has the characteristic of fluid lubrication, and due to the action of liquid surface tension, the rigidity of the oil film just right forms a crescent surface at one end in contact with air, so that the leakage of a working medium is effectively prevented, and the sealing effect of the rotating shaft is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seat structures, in particular to an oil leakage-proof bearing seat structure. Background Art

[0002] A bearing seat is a large or extra-large bearing seat with a special structure that can withstand comprehensive loads. It has the characteristics of compact structure, flexible rotation, and easy installation and maintenance. Where there is a bearing, there must be a support point. The inner support point of the bearing is the shaft, and the outer support point is what is commonly known as the bearing seat.

[0003] In actual use, existing bearings are prone to lubricating oil leaking from the gap between the inner and outer rings. This affects the normal operation of the bearing over time, and the leaked oil easily contaminates mechanical components, shortening their service life. To address this issue, we provide a bearing seat structure that prevents oil leakage. Utility Model Content

[0004] The purpose of the present invention is to provide an oil-leakage-proof bearing seat structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an oil-leakage-proof bearing seat structure, comprising an external bearing ring, an internal bearing ring, and balls arranged between the external bearing ring and the internal bearing ring; the outer wall of the external bearing ring is provided with a bearing shell to form a bearing seat, on which a rotating shaft is movably arranged.

[0006] Preferably, an axial hole is opened on one side of the bearing housing, and a matching sealing cover plate is fixedly installed on the axial hole, and a skeleton oil seal is provided on the inner hole wall of the sealing cover plate.

[0007] Preferably, one end of the rotating shaft passes through the sealing cover plate and extends to the interior of the bearing housing, and is rotatably connected via a built-in bearing ring.

[0008] Preferably, a sealing shaft ring is provided between one end portion of the rotating shaft and the built-in bearing ring.

[0009] Preferably, an end cover is installed in the shaft hole provided on one side of the bearing housing, and the end cover is located at the shaft wall of the rotating shaft.

[0010] Preferably, the shaft wall of the rotating shaft is provided with an oil slinger, and the oil slinger is located in the smaller gap formed by the end cover. The shaft wall of the rotating shaft is provided with a labyrinth sealing cover, and the labyrinth sealing cover is located on one side of the end cover and is adapted to the end cover. A plurality of labyrinth sealing rings are provided between the inner wall of the labyrinth sealing cover and the shaft wall of the rotating shaft, and an oil return hole is provided on the labyrinth sealing cover.

[0011] The utility model provides a bearing seat structure that prevents oil leakage and has the following beneficial effects:

[0012] (1) The oil film formed between the oil seal and the shaft is controlled by the oil seal edge. The oil film has the characteristics of fluid lubrication. Thanks to the effect of liquid surface tension, the stiffness of the oil film is just right to form a crescent surface at the end in contact with the air, effectively preventing the leakage of the working medium, thereby ensuring the sealing effect of the rotating shaft.

[0013] (2) The utility model sets an end cover, and an oil-slinging ring and a labyrinth sealing cover are set inside the end cover, and an oil return hole is provided on the labyrinth sealing cover, which prevents oil leakage and allows the oil to return to the oil return inner ring from the oil return hole, thereby avoiding leakage of the working medium and ensuring the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the bearing seat of the utility model.

[0015] In the figure: 11 external bearing ring, 12 internal bearing ring, 13 rotating shaft, 14 sealing shaft ring, 15 sealing cover plate, 16 end cover, 17 oil thrower ring, 18 labyrinth seal end cover, 19 oil return hole, 20 skeleton oil seal. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0018] A preferred embodiment of the oil leakage-proof bearing seat structure provided by the present invention is as follows: Figure 1 FIG. 1 shows an oil-leakage-proof bearing seat structure, comprising an external bearing ring 11, an internal bearing ring 12, and balls disposed between the external bearing ring 11 and the internal bearing ring 12. The structure is characterized in that a bearing housing is disposed on the outer wall of the external bearing ring 11 to form a bearing seat, and a rotating shaft 13 is movably disposed on the bearing seat.

[0019] An axial hole is provided on one side of the bearing housing, and a matching sealing cover plate 15 is fixedly mounted on the axial hole. A skeleton oil seal 20 is provided on the inner hole wall of the sealing cover plate 15. One end of the rotating shaft 13 passes through the sealing cover plate 15 and extends to the interior of the bearing housing, and is rotatably connected via the built-in bearing ring 12. The skeleton oil seal 20 is a common sealing element widely used in various mechanical equipment. Its main function is to prevent the leakage of lubricating oil or grease, and to prevent external dust and impurities from entering the interior of the mechanical equipment. The structural design of the skeleton oil seal 20 is unique, and it is usually composed of a metal skeleton and a rubber sealing lip. The metal skeleton plays a supporting and fixing role, while the rubber sealing lip is responsible for fitting tightly with the shaft or hole to form an effective sealing effect.

[0020] There are many types of seals available, and you can choose the right one based on your application and needs. Common types include single-lip seals, double-lip seals, and spring seals. Single-lip seals offer a simple structure and are suitable for general sealing applications. Double-lip seals provide a dual sealing effect for improved sealing performance. Spring seals utilize an internal spring to provide additional resilience, ensuring a more stable and reliable seal.

[0021] When selecting a skeleton oil seal, factors such as shaft diameter, rotational speed, operating temperature, and media type need to be considered. The right skeleton oil seal not only effectively extends the service life of mechanical equipment but also improves its operating efficiency and reliability. Therefore, in practical applications, the correct selection and installation of skeleton oil seals is particularly important.

[0022] A sealing shaft ring 14 is disposed between one end of the rotating shaft 13 and the built-in bearing ring 12. An end cap 16 is installed in the shaft hole provided on one side of the bearing housing. End cap 16 is located on the shaft wall of the rotating shaft 13. An oil slinger 17 is provided on the shaft wall of the rotating shaft 13. The oil slinger 17 is located in the small gap formed by end cap 16. A labyrinth seal cover 18 is provided on the shaft wall of the rotating shaft 13. Labyrinth seal cover 18 is located on one side of the end cap 16 and is compatible with the end cap 16. Multiple labyrinth seals are disposed between the inner wall of the labyrinth seal cover 18 and the shaft wall of the rotating shaft 13. The labyrinth seal cover 18 is provided with an oil return hole 19. The end cap 16 plays a crucial role in the mechanical device. The interior of the end cap 16 is carefully designed and equipped with the oil slinger 17 and labyrinth seal cover 18. The function of the oil slinger 17 is to sling excess lubricating oil away from key components to reduce lubricating oil waste. The labyrinth seal cover 18 further enhances the sealing effect, featuring oil return holes 19. These holes not only effectively prevent lubricating oil leakage but also ensure that the lubricating oil can be smoothly discharged from the labyrinth seal cover 18 and returned to the inner oil return ring through the holes 19. This effectively controls leakage of the working medium and significantly improves the sealing effect. This design not only improves the operating efficiency of the mechanical device, but also extends its service life, ensuring the stability and reliability of the equipment.

[0023] During use, there is an oil film controlled by the oil seal edge between the oil seal and the shaft. This oil film has fluid lubrication properties. Under the action of liquid surface tension, the stiffness of the oil film just makes the oil film form a crescent surface at the contact end with the air, preventing leakage of the working medium, thereby achieving sealing of the rotating shaft.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An oil-leakage-proof bearing seat structure, comprising an external bearing ring (11), an internal bearing ring (12), and balls disposed between the external bearing ring (11) and the internal bearing ring (12), characterized in that: The outer wall of the external bearing ring (11) is provided with a bearing housing to form a bearing seat, and a rotating shaft (13) is movably provided on the bearing seat; the shaft wall of the rotating shaft (13) is provided with an oil slinger (17), and the oil slinger (17) is located in a smaller gap formed by the end cover (16); the shaft wall of the rotating shaft (13) is provided with a labyrinth sealing cover (18), and the labyrinth sealing cover (18) is located on one side of the end cover (16) and is adapted to the end cover (16); a plurality of labyrinth sealing rings are provided between the inner wall of the labyrinth sealing cover (18) and the shaft wall of the rotating shaft (13); and the labyrinth sealing cover (18) is provided with an oil return hole (19).

2. The oil-leakage-proof bearing seat structure according to claim 1, characterized in that: An axial hole is provided on one side of the bearing housing, and a matching sealing cover plate (15) is fixedly mounted on the axial hole. A skeleton oil seal (20) is provided on the inner hole wall of the sealing cover plate (15).

3. The oil-leakage-proof bearing seat structure according to claim 1, characterized in that: One end of the rotating shaft (13) passes through the sealing cover plate (15) and extends to the interior of the bearing housing, and is rotatably connected via the built-in bearing ring (12).

4. The oil-leakage-proof bearing seat structure according to claim 1, characterized in that: A sealing shaft ring (14) is provided between one end portion of the rotating shaft (13) and the built-in bearing ring (12).

5. The oil-leakage-proof bearing seat structure according to claim 1, characterized in that: An end cover (16) is installed in the shaft hole provided on one side of the bearing housing, and the end cover (16) is located at the shaft wall of the rotating shaft (13).

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