Rubber part for bearing oil seal of railway wagon

Abstract

The utility model relates to the technical field of bearing oil seals of railway wagons, and discloses a rubber part for bearing oil seals of railway wagons, which comprises an outer rubber ring and an inner rubber ring, the inner side of the outer rubber ring is connected with the inner rubber ring, and a hollow cavity is formed between the peripheries of the outer rubber ring and the inner rubber ring. A plurality of hard rubber blocks are arranged in the hollow cavity, and engineering plastic sheets are embedded in the plurality of hard rubber blocks. According to the rubber part, the hard rubber blocks and the engineering plastic sheets are arranged and matched with one another, so that the structural strength of the rubber part can be enhanced, the service life is further prolonged, and due to the arrangement of the mounting groove, the rubber circular ring and the wear-resistant rubber ring, when the wear-resistant rubber ring is damaged, the wear-resistant rubber ring can be prevented from being damaged. And only the wear-resistant rubber ring and the rubber circular ring need to be replaced without replacing the whole rubber part, so that the maintenance cost is reduced, and the wear resistance of the rubber part can be enhanced through the arrangement of the wear-resistant rubber ring.

Description

Technical Field

[0001] This utility model relates to the field of oil seal technology for railway freight car bearings, specifically a rubber component used for oil seals of railway freight car bearings. Background Technology

[0002] As a vital tool for freight transportation, the operational efficiency and safety of railway freight cars are of paramount importance. Rolling bearing assemblies are one of the key components of railway freight cars, and oil seals are an indispensable part of this assembly. One of the main functions of oil seals is to prevent the leakage of lubricating oil inside the bearing. During the operation of railway freight cars, bearings require continuous lubrication to reduce friction and wear. Through their tight structure and material selection, oil seals ensure that the lubricating oil circulates within the bearing and is not reduced due to leakage, thus maintaining the bearing's normal lubrication condition. Rubber components are an important part of bearing oil seals.

[0003] Existing rubber components used for oil seals in railway freight car bearings suffer from weak structural strength, resulting in a short service life. Furthermore, when the inner rubber ring is damaged, the entire rubber component needs to be replaced, leading to high maintenance costs. In addition, these rubber components have poor wear resistance. Therefore, there is an urgent need for a new type of rubber component for oil seals in railway freight car bearings to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a rubber component for oil seals of railway freight car bearings, in order to solve the problems mentioned in the background art, such as the weak structural strength of existing rubber components for oil seals of railway freight car bearings, resulting in a short service life, the need to replace the entire rubber component when the inner rubber ring is damaged, leading to high maintenance costs, and poor wear resistance of the rubber component.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rubber component for oil seals of railway freight car bearings includes a rubber outer ring and a rubber inner ring. The inner ring is connected to the inner side of the rubber outer ring. A hollow cavity is formed between the outer and inner rings. Multiple hard rubber blocks are disposed within the hollow cavity. An engineering plastic sheet is embedded in each of the hard rubber blocks. An installation groove is formed on the inner wall of the inner ring. A rubber ring is embedded inside the installation groove. A wear-resistant rubber ring is connected to the inner wall of the rubber ring.

[0007] As a preferred embodiment of this utility model, the mounting groove is a ring-shaped structure.

[0008] As a preferred embodiment of this invention, the thickness of the wear-resistant rubber ring is greater than the thickness of the rubber ring.

[0009] As a preferred embodiment of this utility model, the mounting groove on the inner rubber ring and the rubber ring are detachably installed.

[0010] As a preferred embodiment of this utility model, the number of both the hard rubber block and the engineering plastic sheet is set to six, and they are all arranged in a ring with equal spacing about the inner circle of the rubber.

[0011] As a preferred embodiment of this utility model, the wear-resistant rubber ring is made of nitrile rubber, and the front end of the hard rubber block is not on the same plane as the front end of the hollow cavity.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention strengthens the structural strength of the rubber component by incorporating multiple hard rubber blocks and engineering plastic sheets, thereby extending its service life. Furthermore, the inclusion of mounting grooves, rubber rings, and wear-resistant rubber rings means that when the wear-resistant rubber ring is damaged, only the wear-resistant rubber ring and rubber ring need to be replaced, eliminating the need to replace the entire rubber component and reducing maintenance costs. Additionally, the wear-resistant rubber ring enhances the wear resistance of the rubber component. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

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

[0016] Figure 2 This is a three-dimensional structural diagram showing the positional relationship between the rubber inner ring and the mounting groove of this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the wear-resistant rubber ring and the rubber ring of this utility model.

[0018] In the diagram: 1. Outer rubber ring; 2. Hard rubber block; 3. Inner rubber ring; 4. Engineering plastic sheet; 5. Wear-resistant rubber ring; 6. Mounting groove; 7. Rubber ring; 8. Hollow cavity. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0020] Please see Figure 1-3 A rubber component for oil seals of railway freight car bearings includes a rubber outer ring 1 and a rubber inner ring 3. The inner rubber ring 3 is connected to the inner side of the rubber outer ring 1. A hollow cavity 8 is formed between the outer rubber ring 1 and the inner rubber ring 3. Multiple hard rubber blocks 2 are disposed in the hollow cavity 8. Engineering plastic sheets 4 are embedded in each of the multiple hard rubber blocks 2. An installation groove 6 is formed on the inner wall of the rubber inner ring 3. A rubber ring 7 is embedded in the installation groove 6. A wear-resistant rubber ring 5 is connected to the inner wall of the rubber ring 7. The wear-resistant rubber ring 5 enhances the wear resistance of the rubber component.

[0021] The mounting groove 6 has a ring-shaped structure.

[0022] The thickness of the wear-resistant rubber ring 5 is greater than the thickness of the rubber ring 7.

[0023] The mounting groove 6 on the inner rubber ring 3 and the rubber ring 7 are detachable. When the wear-resistant rubber ring 5 is damaged, only the wear-resistant rubber ring 5 and the rubber ring 7 need to be replaced, without replacing the entire rubber part, thus reducing maintenance costs.

[0024] The number of hard rubber blocks 2 and engineering plastic sheets 4 is set to six, and they are all arranged in a ring with equal spacing about the inner rubber ring 3. By utilizing their mutual cooperation, the structural strength of the rubber part can be strengthened, thereby extending its service life.

[0025] Among them, the wear-resistant rubber ring 5 is made of nitrile rubber, and the front end of the hard rubber block 2 is not on the same plane as the front end of the hollow cavity 8.

[0026] The working principle and usage process of this utility model are as follows: First, during installation, the wear-resistant rubber ring 5 is inserted into the inner rubber ring 3 through the rubber ring 7 and pushed to the other side. When the rubber ring 7 reaches the mounting groove 6, it unfolds outward and embeds itself into the mounting groove 6, thus completing the installation of the wear-resistant rubber ring 5. When it is necessary to replace the wear-resistant rubber ring 5, simply pinch the wear-resistant rubber ring 5 firmly and pull the rubber ring 7 out of the mounting groove 6 for replacement. Only the wear-resistant rubber ring 5 and the rubber ring 7 need to be replaced; there is no need to replace the entire rubber component, thereby reducing maintenance costs. Furthermore, the wear-resistant rubber ring 5 enhances the wear resistance of the rubber component. By setting multiple hard rubber blocks 2 and engineering plastic sheets 4, the structural strength of the rubber component can be strengthened, thereby extending its service life. Content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0027] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A rubber component for an oil seal of a railway freight car bearing, comprising a rubber outer ring (1) and a rubber inner ring (3), characterized in that: The inner side of the rubber outer ring (1) is connected to the rubber inner ring (3). A hollow cavity (8) is formed between the rubber outer ring (1) and the rubber inner ring (3). Multiple hard rubber blocks (2) are provided in the hollow cavity (8). Engineering plastic sheets (4) are embedded in each of the multiple hard rubber blocks (2). An installation groove (6) is provided on the inner wall of the rubber inner ring (3). A rubber ring (7) is embedded in the installation groove (6). A wear-resistant rubber ring (5) is connected to the inner wall of the rubber ring (7).

2. The rubber component for oil seals of railway freight car bearings according to claim 1, characterized in that: The mounting groove (6) is a ring-shaped structure.

3. A rubber component for oil seals of railway freight car bearings according to claim 1, characterized in that: The thickness of the wear-resistant rubber ring (5) is greater than the thickness of the rubber ring (7).

4. A rubber component for oil seals of railway freight car bearings according to claim 1, characterized in that: The mounting groove (6) on the inner rubber ring (3) and the rubber ring (7) are detachable.

5. A rubber component for oil seals of railway freight car bearings according to claim 1, characterized in that: The number of the hard rubber block (2) and the engineering plastic sheet (4) is set to six, and they are all arranged in a ring with equal spacing about the inner rubber ring (3).

6. A rubber component for oil seals of railway freight car bearings according to claim 1, characterized in that: The wear-resistant rubber ring (5) is made of nitrile rubber, and the front end of the hard rubber block (2) is not on the same plane as the front end of the hollow cavity (8).

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