Wear-resistant turnup oilless bearing

Abstract

The utility model provides a wear-resistant turnup oilless bearing, and aims to solve the problems that a traditional bearing is easy to wear and needs to be frequently maintained in a severe environment. The bearing comprises a rotating part, the rotating part is sleeved with a bearing structure, and the bearing structure is composed of an outer ring, an inner ring, a rolling element and a retainer. The outer ring and the inner ring are tightly attached to the rotating piece and are subjected to special treatment such as chromium plating or nitriding treatment, so that wear resistance and corrosion resistance are improved. The rolling elements are made of a high hardness material, such as ceramic or cemented carbide, and the cage is made of a lightweight high strength material, such as engineering plastic or aluminum alloy, to improve performance and reduce weight. The grooves are formed in the inner ring and the outer ring, the polymer paste layers are filled in the grooves, stable lubrication is provided in an extreme environment, and abrasion is reduced. In addition, a fixing frame and a rolling shaft sleeve are arranged on one side of the bearing structure, the outer shell protects the internal structure and maintains stability, a limiting piece on the outer ring limits axial movement, and stability is improved. The reinforcing ribs on the surface of the outer shell enhance structural strength and resist impact.

Description

Technical Field

[0001] The utility model provides an oil-free bearing, belongs to the technical field of bearings, and particularly relates to a wear-resistant flanging oil-free bearing. Background Art

[0002] Oilless bearings are a special type of bearing that combine the features of metal bearings and oil-free bearings, capable of operating without or with minimal oil. The metal base of these bearings bears the load, while a specially formulated solid lubricant provides lubrication. They offer high load capacity, impact resistance, high temperature resistance, and strong self-lubrication. They are particularly suitable for heavy loads, low speeds, reciprocating or oscillating motions, and other applications where an oil film is difficult to form. They are also resistant to water jets and other acidic corrosion. They are typically made of a steel base, with a sintered spherical bronze powder interlayer and a rolled polytetrafluoroethylene and lead mixture on the surface. They feature low friction, wear and corrosion resistance, oil-free self-lubrication, and a long service life. Oilless bearings are widely used in metallurgical continuous casting machines, steel rolling equipment, mining machinery, ships, steam turbines, hydraulic turbines, injection molding machines, and equipment production lines.

[0003] Due to their inherent structure and characteristics, existing oil-free bearings exhibit a high coefficient of friction in practical applications. This not only increases component wear but can also lead to thermal deformation and increased frictional heat. This is particularly true in situations where clearance is small, increasing the coefficient of friction and thus affecting smooth movement. Furthermore, due to the lack of effective lubrication, oil-free bearings experience a relatively high wear rate over long periods of operation. This not only reduces bearing service life but can also exacerbate bearing damage due to the generation of wear particles. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide a wear-resistant flanged oil-free bearing, thereby solving the problem of the short service life of the existing oil-free bearings.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a wear-resistant flanged oil-free bearing, comprising a rotating part, the outer sleeve of which is provided with a bearing structure, the bearing structure comprising an outer ring that is close to the rotating part, an inner ring that is sleeved on the outside of the rotating part on one side of the outer ring, symmetrically distributed rolling elements on the side of the inner ring away from the outer ring, and a retaining frame that is sleeved on the rotating part on the outside of the rolling element.

[0006] Preferably, a fixing frame penetrated by the rotating member is provided on one side of the bearing structure, and a roller sleeve tightly contacting the rotating member is provided inside the fixing frame.

[0007] Preferably, the retaining frame is provided with an outer shell sleeved on the inner ring, the outer ring and the rolling element, and the outer ring is fixedly connected to one end of the outer shell opening with a limiting member embedded in the outer shell.

[0008] Preferably, a certain gap is left between the outer shell and the inner ring and the outer ring, and both the inner ring and the outer ring are provided with evenly distributed grooves, and a polymer paste layer is provided inside the grooves to play a lubricating role.

[0009] Preferably, the surface of the outer shell is provided with reinforcing ribs, which are used to improve the structural strength and impact resistance of the outer shell; the surfaces of the outer ring and the inner ring are specially treated, including but not limited to chrome plating or nitriding, to improve their wear resistance and corrosion resistance.

[0010] Preferably, the rolling elements are made of a high-hardness material, such as ceramic or cemented carbide; and the retaining frame is made of a light and high-strength material, such as engineering plastic or aluminum alloy, to reduce the overall weight of the bearing and improve its performance.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] The utility model solves the technical problems of traditional bearings being easily worn and requiring frequent maintenance in harsh environments by designing a wear-resistant flanged oil-free bearing. The bearing includes a rotating part with a bearing structure sleeved on the outside thereof. The bearing structure consists of an outer ring, an inner ring, rolling elements and a retaining frame, wherein the outer ring is in close contact with the rotating part, the inner ring is sleeved on the outside of the rotating part, the rolling elements are symmetrically distributed on the side of the inner ring away from the outer ring, and the retaining frame is sleeved on the rotating part to fix the rolling elements and maintain their correct position between the inner ring and the outer ring. Such a design enables the bearing to operate without external lubrication. The rolling elements roll between the inner and outer rings, reducing friction and wear, and improving the durability and reliability of the bearing. At the same time, the design of the retaining frame also helps to disperse the load, further extending the service life of the bearing.

[0013] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation of a wear-resistant, flanged, oil-free bearing of the utility model;

[0015] Figure 2 This is a cross-sectional view of a fixing frame of a wear-resistant flanged oil-free bearing according to the utility model;

[0016] Figure 3 This is a cross-sectional view of the bearing structure of a wear-resistant, flanged, oil-free bearing of the utility model;

[0017] Figure 4This is an exploded view of the bearing structure of a wear-resistant, flanged, oil-free bearing of the utility model.

[0018] As shown in the figure:

[0019] 1. Rotating parts;

[0020] 11. Fixed frame; 12. Roller sleeve;

[0021] 2. Bearing structure;

[0022] 21. Outer ring; 22. Inner ring; 23. Rolling element; 24. Cage; 25. Outer housing; 26. Limiting piece; 27. Groove; 28. Polymer paste layer; 29. ​​Reinforcement rib. DETAILED DESCRIPTION

[0023] 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.

[0024] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] like Figure 1 and Figure 2As shown, a wear-resistant flanged oil-free bearing includes a rotating part 1, characterized in that: a bearing structure 2 is provided on the outside of the rotating part 1, and the bearing structure 2 includes an outer ring 21 that is close to the rotating part 1, an inner ring 22 that is sleeved on the outside of the rotating part 1 on one side of the outer ring 21, and symmetrically distributed rolling elements 23 are provided on the side of the inner ring 22 away from the outer ring 21. A retaining frame 24 that is sleeved on the rotating part 1 is provided on the outside of the rolling element 23, and a certain gap is left between the outer shell 25 and the inner ring 22 and the outer ring 21. Uniformly distributed grooves 27 are provided on the inner ring 22 and the outer ring 21, and a polymer paste layer 28 is provided inside the groove 27 to play a lubricating role. The rolling element 23 is made of a high-hardness material, such as ceramic or cemented carbide; the retaining frame 24 is made of a lightweight and high-strength material, such as engineering plastic or aluminum alloy, to reduce the overall weight of the bearing and improve its performance.

[0027] In this embodiment, the bearing structure 2 includes an outer ring 21 and an inner ring 22. These two rings are in close contact with the rotating part 1 and have undergone special treatments, such as chrome plating or nitriding, to improve their wear resistance and corrosion resistance. Secondly, the inner ring 22 is provided with symmetrically distributed rolling elements 23 on the side away from the outer ring 21. These rolling elements are made of high-hardness materials, such as ceramics or cemented carbide, to improve their wear resistance and extend their service life. In addition, the retaining frame 24 is made of lightweight and high-strength materials, such as engineering plastics or aluminum alloys, which helps to reduce the overall weight of the bearing and improve its performance. Finally, the outer ring 21 and the inner ring 22 of the bearing may be provided with evenly distributed grooves 27, and a polymer paste layer 28 is provided inside the grooves 27, which not only reduces the contact friction surface but also the paste layer made of wear-resistant and high-temperature resistant polymer material can maintain stable lubrication performance in extreme working environments, further reducing wear.

[0028] Through these designs, the oil-free bearing of the utility model can operate without external lubrication while maintaining low friction and high wear resistance, and is suitable for a variety of harsh working environments.

[0029] like Figure 3 and Figure 4 As shown, one side of the bearing structure 2 is provided with a fixed frame 11, which is penetrated by the rotating member 1. Inside the fixed frame 11 is a roller sleeve 12, which is in close contact with the rotating member 1. This design ensures stable rotation of the rotating member 1 within the fixed frame 11. At the same time, the roller sleeve 12 reduces direct contact between the rotating member 1 and the fixed frame 11, reducing wear and improving rotation efficiency. The outer portion of the retaining frame 24 is provided with an outer housing 25, which fits over the inner ring 22, outer ring 21, and rolling elements 23. This design protects the internal structure of the bearing from external environmental influences. The presence of the outer housing 25 also helps maintain the integrity and stability of the bearing.

[0030] A limit member 26 is fixedly connected to the end of the outer ring 21 close to the opening of the outer shell 25 and is embedded in the outer shell 25. The function of the limit member 26 is to limit the axial movement of the outer ring 21, ensure that the rolling element 23 runs on the correct track, and prevent the bearing from axial displacement when it is under high load or high-speed rotation, thereby improving the stability and durability of the bearing.

[0031] The outer shell 25 is provided with reinforcing ribs 29 on its surface. The reinforcing ribs 29 are used to improve the structural strength and impact resistance of the outer shell 25 . This is particularly important when the bearing is subjected to high loads or impacts, and can prevent the outer shell 25 from being deformed or damaged.

[0032] The outer ring 21 and inner ring 22 undergo special surface treatments, including but not limited to chrome plating or nitriding, to improve their wear and corrosion resistance. These surface treatments form a hard protective layer on the ring surface that not only resists wear but also provides a certain degree of corrosion protection, thereby extending the service life of the bearing.

[0033] When in use, first, install the rotating part 1 into the bearing structure 2, ensure that the outer ring 21 and the inner ring 22 are close to the rotating part 1, and check whether the rolling elements 23 are symmetrically distributed on the side of the inner ring 22 away from the outer ring 21, and whether the retaining frame 24 is correctly sleeved on the rotating part 1; then, sleeve the outer shell 25 on the outside of the inner ring 22, the outer ring 21 and the rolling elements 23, and ensure that there is an appropriate gap between the outer shell 25 and the inner ring 22 and the outer ring 21 so that the polymer paste layer 28 can play a lubricating role in the groove 27; then, install the fixing frame 11 on one side of the bearing structure 2, and pass the fixing frame 11 through the rotating part 1, and insert the fixing frame 11 into the fixing frame 11. Install the roller sleeve 12 on the outside to reduce the direct contact between the rotating part 1 and the fixed frame 11, and improve the rotation efficiency; next, check whether the limiter 26 is fixedly connected to the end of the outer ring 21 close to the opening of the outer shell 25, and is embedded with the outer shell 25 to limit the axial movement of the outer ring 21 and ensure that the rolling element 23 runs on the correct track; finally, confirm the installation of the reinforcement ribs 29 on the surface of the outer shell 25 to improve the structural strength and impact resistance of the outer shell 25. After completing the installation of the bearing, carry out necessary tests to ensure that the bearing can operate stably without external lubrication, maintain low friction and high wear resistance, and is suitable for a variety of harsh working environments.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A wear-resistant flanged oil-free bearing, comprising a rotating member (1), characterized in that: The rotating member (1) is provided with a bearing structure (2) on its exterior. The bearing structure (2) comprises an outer ring (21) in close contact with the rotating member (1), an inner ring (22) provided on one side of the outer ring (21) and sleeved on the outside of the rotating member (1), symmetrically distributed rolling elements (23) provided on the side of the inner ring (22) away from the outer ring (21), and a retaining frame (24) provided on the exterior of the rolling elements (23) and sleeved on the rotating member (1).

2. The wear-resistant flanged oil-free bearing according to claim 1, characterized in that: A fixed frame (11) penetrated by the rotating member (1) is provided on one side of the bearing structure (2), and a roller sleeve (12) in close contact with the rotating member (1) is provided inside the fixed frame (11).

3. The wear-resistant flanged oil-free bearing according to claim 2, characterized in that: The retaining frame (24) is provided with an outer shell (25) sleeved on the inner ring (22), the outer ring (21) and the rolling element (23); the outer ring (21) is fixedly connected to one end of the outer ring (21) close to the opening of the outer shell (25) with a limiting member (26) embedded in the outer shell (25).

4. The wear-resistant flanged oil-free bearing according to claim 3, characterized in that: A certain gap is left between the outer shell (25) and the inner ring (22) and the outer ring (21). The inner ring (22) and the outer ring (21) are both provided with evenly distributed grooves (27). A polymer paste layer (28) is provided inside the grooves (27) to play a lubricating role.

5. The wear-resistant flanged oil-free bearing according to claim 3, characterized in that: The surface of the outer shell (25) is provided with reinforcing ribs (29), which are used to improve the structural strength and impact resistance of the outer shell (25); the surfaces of the outer ring (21) and the inner ring (22) are specially treated, including but not limited to chrome plating or nitriding, to improve their wear resistance and corrosion resistance.

6. The wear-resistant flanged oil-free bearing according to claim 1, characterized in that: The rolling element (23) is made of a high-hardness material, such as ceramic or hard alloy; the retainer (24) is made of a light and high-strength material, such as engineering plastic or aluminum alloy, to reduce the overall weight of the bearing and improve its performance.

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