Anti-corrosion and wear-resistant bearing

Abstract

The utility model discloses an anti-corrosion and wear-resistant bearing, and relates to the technical field of bearings. The bearing comprises an outer ring, an inner ring assembly is arranged in an inner cavity of the outer ring, a retainer is arranged between the inner ring assembly and the outer ring, and a rolling body is arranged in an inner cavity of the retainer; the inner ring assembly comprises a first connecting sleeve, and a second connecting sleeve is clamped in an inner cavity of the first connecting sleeve. According to the sealing design of the inner ring assembly, through the first connecting sleeve, the second connecting sleeve, the sealing ring and the sealing plate which are connected in a clamped mode, external impurities are effectively prevented from invading, a good working environment is built for the interior of the bearing, and a strength foundation is laid for base-layer high-carbon-chromium bearing steel; the carburized bearing steel and martensitic stainless steel of the reinforcing layer are combined to improve the strength and hardness, the chemical nickel-plated phosphorus alloy and the diamond-like carbon coating of the functional layer endow the bearing with excellent corrosion resistance and wear resistance respectively, and the adaptive capacity of the bearing under complex and severe working conditions is comprehensively improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and in particular relates to a corrosion-resistant and wear-resistant bearing. Background Technology

[0002] In the field of mechanical transmission, bearings, as key components, are widely used in various mechanical equipment, playing a vital role in supporting rotating parts and reducing friction. Traditional bearings can, to a certain extent, meet the basic requirements of mechanical operation, providing fundamental support for the normal operation of various equipment.

[0003] However, existing bearings have many shortcomings. On the one hand, in some harsh working environments, such as in the presence of humid or corrosive gases or liquids, traditional bearings are easily corroded, leading to a decline in their performance and a shortened service life. On the other hand, as the operating speed and load of mechanical equipment continue to increase, the requirements for the wear resistance of bearings are also becoming higher and higher. Many traditional bearings cannot meet the wear resistance requirements under high-intensity friction, and wear occurs frequently, affecting the stability and reliability of the equipment.

[0004] To address these issues, we provide a corrosion-resistant and wear-resistant bearing. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant and wear-resistant bearing. By combining the inner ring assembly, the reinforcing layer, and the functional layer, the invention solves the problems of poor sealing, corrosion resistance, and wear resistance in existing bearings.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a corrosion-resistant and wear-resistant bearing, comprising an outer ring, an inner ring assembly disposed within the inner cavity of the outer ring, a cage disposed between the inner ring assembly and the outer ring, and rolling elements disposed within the inner cavity of the cage. The inner ring assembly includes a first connecting sleeve, a second connecting sleeve being snapped into the inner cavity of the first connecting sleeve, a sealing plate being fixedly connected to the opposite side of the first and second connecting sleeves, and a sealing ring being disposed at the connection between the first and second connecting sleeves. The outer ring, first connecting sleeve, second connecting sleeve, cage, and rolling elements are made of the same material. The outer ring includes a base layer, a reinforcing layer being fixedly connected to the outer surface of the base layer, and a functional layer being fixedly connected to the outer surface of the reinforcing layer. The overall structure is rationally designed, and the sealing design of the inner ring assembly effectively prevents impurities from entering, protecting the internal structure. The outer ring, first connecting sleeve, second connecting sleeve, cage, and rolling elements, all made of the same material, ensure the consistency of the overall bearing performance. The design of the outer ring, from the base layer to the reinforcing layer and then to the functional layer, progressively enhances the strength, hardness, corrosion resistance, and wear resistance of the bearing, comprehensively improving the overall performance of the bearing and meeting the needs of different working environments and conditions.

[0008] The present invention is further configured such that the base layer is made of high-carbon chromium bearing steel.

[0009] The present invention is further configured such that the reinforcing layer includes a first strength layer and a second strength layer, wherein the first strength layer is fixed to the outer surface of the second strength layer.

[0010] The present invention is further configured such that the material of the first strength layer is carburized bearing steel, and the material of the second strength layer is martensitic stainless steel.

[0011] The present invention is further configured such that the functional layer includes an anti-corrosion layer and an anti-corrosion and wear-resistant layer, wherein the anti-corrosion and wear-resistant layer is fixed to the outer surface of the anti-corrosion layer.

[0012] The present invention is further configured such that the material of the anti-corrosion layer is chemically plated nickel-phosphorus alloy, and the material of the anti-corrosion and wear-resistant layer is diamond-like carbon coating.

[0013] The present invention is further provided that the surface of the first connecting sleeve and the inner wall of the outer ring are provided with grooves for use with the rolling element.

[0014] The present invention has the following beneficial effects.

[0015] 1. The sealing design of the inner ring assembly of this utility model effectively prevents external impurities from entering through the snap-fit ​​first connecting sleeve, second connecting sleeve, sealing ring and sealing plate, creating a good working environment inside the bearing. The high carbon chromium bearing steel of the base layer lays the foundation for strength, the combination of carburized bearing steel and martensitic stainless steel in the reinforcing layer improves strength and hardness, and the chemical nickel-phosphorus alloy and diamond-like carbon coating of the functional layer respectively give the bearing excellent corrosion resistance and wear resistance, comprehensively improving the bearing's adaptability under complex and harsh working conditions.

[0016] 2. The use of identical materials in this invention ensures the consistency and stability of the overall bearing performance. The groove provides a precise track for the rolling elements, further improving the smoothness and reliability of the bearing operation. It can better meet the stringent requirements of modern mechanical equipment for bearings in terms of high strength, high wear resistance, and corrosion resistance, effectively extending the service life of the equipment, reducing maintenance costs, improving the operating efficiency of the equipment, and providing strong support for the stable operation of the mechanical transmission system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a three-dimensional diagram of a corrosion-resistant and wear-resistant bearing.

[0019] Figure 2 This is an exploded view of a corrosion-resistant and wear-resistant bearing.

[0020] Figure 3 This is a schematic diagram of the material composition of the outer ring in a corrosion-resistant and wear-resistant bearing.

[0021] Figure 4 This is a schematic diagram of the material composition of the reinforcing layer in a corrosion-resistant and wear-resistant bearing.

[0022] Figure 5 This is a schematic diagram of the material composition of the functional layer in a corrosion-resistant and wear-resistant bearing.

[0023] In the attached diagram: 1. Outer ring; 2. Inner ring assembly; 3. Cage; 4. Rolling element; 21. First connecting sleeve; 22. Second connecting sleeve; 23. Sealing plate; 24. Sealing ring; 11. Base layer; 12. Reinforcing layer; 13. Functional layer; 121. First strength layer; 122. Second strength layer; 131. Anti-corrosion layer; 132. Anti-corrosion and wear-resistant layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5 This utility model is a corrosion-resistant and wear-resistant bearing, including an outer ring 1, an inner ring assembly 2 disposed in the inner cavity of the outer ring 1, a cage 3 disposed between the inner ring assembly 2 and the outer ring 1, and a rolling element 4 disposed in the inner cavity of the cage 3; the inner ring assembly 2 includes a first connecting sleeve 21, a second connecting sleeve 22 is snapped into the inner cavity of the first connecting sleeve 21, a sealing plate 23 is fixedly connected to the opposite side of the first connecting sleeve 21 and the second connecting sleeve 22, and a sealing ring 24 is disposed at the connection between the first connecting sleeve 21 and the second connecting sleeve 22; the outer ring 1, the first connecting sleeve 21, the second connecting sleeve 22, the cage 3 and the rolling element 4 are made of the same material, the outer ring 1 includes a base layer 11, a reinforcing layer 12 is fixedly connected to the outer surface of the base layer 11, and a functional layer 13 is fixedly connected to the outer surface of the reinforcing layer 12.

[0027] Specifically: The overall structure is reasonably designed. The sealing design of the inner ring component 2 effectively prevents impurities from entering and protects the internal structure. The outer ring 1, the first connecting sleeve 21, the second connecting sleeve 22, the cage 3, and the rolling elements 4, all made of the same material, ensure the consistency of the overall performance of the bearing. The design of the outer ring 1 from the base layer 11 to the reinforcing layer 12 and then to the functional layer 13 gradually enhances the strength, hardness, corrosion resistance, and wear resistance of the bearing, comprehensively improving the overall performance of the bearing and meeting the needs of different working environments and conditions.

[0028] Example 2

[0029] Please see Figure 1-5 Based on Embodiment 1, the base layer 11 is made of high-carbon chromium bearing steel, the reinforcing layer 12 includes a first strength layer 121 and a second strength layer 122, the first strength layer 121 is fixed to the outer surface of the second strength layer 122, the material of the first strength layer 121 is carburized bearing steel, the material of the second strength layer 122 is martensitic stainless steel, the functional layer 13 includes an anti-corrosion layer 131 and an anti-corrosion and wear-resistant layer 132, the anti-corrosion and wear-resistant layer 132 is fixed to the outer surface of the anti-corrosion layer 131, the material of the anti-corrosion layer 131 is chemically plated nickel-phosphorus alloy, the material of the anti-corrosion and wear-resistant layer 132 is diamond-like carbon coating, and the surface of the first connecting sleeve 21 and the inner wall of the outer ring 1 are provided with grooves for use with the rolling element 4.

[0030] Specifically: High-carbon chromium bearing steel, as the base layer material 11, possesses high strength, hardness, and good toughness, providing a solid foundation for the bearing and ensuring it can withstand certain loads during normal operation without easily deforming or being damaged. The reinforcing layer 12 adopts a double-layer structure design with a first strength layer 121 and a second strength layer 122. The combination of different materials further enhances the bearing's strength and hardness. This layered design fully utilizes the advantages of different materials, improving the bearing's load-bearing capacity and enabling it to adapt to higher load conditions. Carburized bearing steel, as the first strength layer 121, has good surface hardness and wear resistance, improving the bearing surface's wear resistance. Martensitic stainless steel, as the second strength layer 122, not only has high strength but also possesses certain corrosion resistance, comprehensively improving the bearing's performance from the inside out and enhancing its applicability under complex working conditions. The functional layer 13 features an anti-corrosion layer 131 and an anti-corrosion and wear-resistant layer 132. This design specifically addresses the corrosion and wear resistance issues of bearings in harsh environments. The layered design leverages the properties of both materials, ensuring the bearing possesses excellent corrosion resistance while maintaining a low wear rate during friction, thus extending its service life. The electroless nickel-phosphorus alloy plating layer 131, acting as the corrosion-resistant layer, exhibits excellent corrosion resistance and forms a dense protective film on the bearing surface, effectively resisting the erosion of various corrosive media. The diamond-like carbon coating layer 132, acting as the corrosion-resistant and wear-resistant layer, possesses extremely high hardness and a low coefficient of friction, significantly improving the bearing's wear resistance, reducing frictional loss, and enhancing the stability and efficiency of equipment operation. The grooves on the surface of the first connecting sleeve 21 and the inner wall of the outer ring 1 provide precise rolling tracks for the rolling elements 4, making them more stable during rolling, reducing abnormal friction and wear between the rolling elements 4 and the outer ring 1 and inner ring assembly 2, ensuring the smoothness and reliability of bearing operation, and further extending the bearing's service life.

[0031] The working principle of this utility model is as follows: the rolling element 4 rolls between the outer ring 1 and the inner ring assembly 2, reducing the friction between them and allowing the outer ring 1 and the inner ring assembly 2 to rotate relative to each other, thus realizing the basic function of the bearing. The grooves opened on the surface of the first connecting sleeve 21 and the inner wall of the outer ring 1 provide a rolling track for the rolling element 4, ensuring the stable operation of the rolling element 4. The inner ring assembly 2 is composed of the first connecting sleeve 21 and the second connecting sleeve 22. The inner cavity of the first connecting sleeve 21 is engaged with the second connecting sleeve 22. A sealing ring 24 is set at the connection between the two to provide a sealing effect and prevent external impurities from entering the bearing and affecting its performance. The sealing plate 23 fixedly connected to the opposite side of the first connecting sleeve 21 and the second connecting sleeve 22 further enhances the sealing effect and effectively protects the internal structure of the bearing. The components include the outer ring 1, the first connecting sleeve 21, the second connecting sleeve 22, the cage 3, and the rolling element 4. With the same material composition, the outer ring 1 consists of a base layer 11, a reinforcing layer 12, and a functional layer 13 from the inside out. The base layer 11 is made of high-carbon chromium bearing steel, providing basic strength and toughness for the bearing and serving as the foundation support for the entire bearing structure. The reinforcing layer 12 includes a first strength layer 121 and a second strength layer 122. The first strength layer 121 is made of carburized bearing steel, and the second strength layer 122 is made of martensitic stainless steel. The superposition of the two layers further enhances the strength and hardness of the bearing, improving its load-bearing capacity. The functional layer 13 includes an anti-corrosion layer 131 and an anti-corrosion and wear-resistant layer 132. The anti-corrosion layer 131 uses chemically plated nickel-phosphorus alloy, which can effectively resist the erosion of corrosive media and protect the internal structure. The anti-corrosion and wear-resistant layer 132 uses a diamond-like carbon coating, which has good wear resistance, reduces friction loss, and extends the service life of the bearing.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A corrosion-resistant and wear-resistant bearing, comprising an outer ring (1), characterized in that: The inner cavity of the outer ring (1) is provided with an inner ring assembly (2), and a cage (3) is provided between the inner ring assembly (2) and the outer ring (1). The inner cavity of the cage (3) is provided with a rolling element (4). The inner ring assembly (2) includes a first connecting sleeve (21), a second connecting sleeve (22) is snapped into the inner cavity of the first connecting sleeve (21), a sealing plate (23) is fixedly connected to the opposite side of the first connecting sleeve (21) and the second connecting sleeve (22), and a sealing ring (24) is provided at the connection between the first connecting sleeve (21) and the second connecting sleeve (22). The outer ring (1), the first connecting sleeve (21), the second connecting sleeve (22), the cage (3) and the rolling element (4) are made of the same material. The outer ring (1) includes a base layer (11), and a reinforcing layer (12) is fixedly connected to the outer surface of the base layer (11). A functional layer (13) is fixedly connected to the outer surface of the reinforcing layer (12).

2. The corrosion-resistant and wear-resistant bearing according to claim 1, characterized in that: The base layer (11) is made of high carbon chromium bearing steel.

3. The corrosion-resistant and wear-resistant bearing according to claim 1, characterized in that: The reinforcing layer (12) includes a first strength layer (121) and a second strength layer (122), wherein the first strength layer (121) is fixed to the outer surface of the second strength layer (122).

4. The corrosion-resistant and wear-resistant bearing according to claim 3, characterized in that: The first strength layer (121) is made of carburized bearing steel, and the second strength layer (122) is made of martensitic stainless steel.

5. The corrosion-resistant and wear-resistant bearing according to claim 1, characterized in that: The functional layer (13) includes an anti-corrosion layer (131) and an anti-corrosion and wear-resistant layer (132), wherein the anti-corrosion and wear-resistant layer (132) is fixed to the outer surface of the anti-corrosion layer (131).

6. The corrosion-resistant and wear-resistant bearing according to claim 5, characterized in that: The anti-corrosion layer (131) is made of chemically plated nickel-phosphorus alloy, and the anti-corrosion and wear-resistant layer (132) is made of diamond-like carbon coating.

7. The corrosion-resistant and wear-resistant bearing according to claim 1, characterized in that: The first connecting sleeve (21) surface and the inner wall of the outer ring (1) are both provided with grooves for use with the rolling element (4).

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