Sealed rolling bearing

Abstract

The utility model provides a kind of sealed rolling bearing, comprising: bearing mechanism and airflow sealing mechanism, wherein, the bearing mechanism includes outer bearing ring, inner bearing ring and multiple rollers, wherein, the inner bearing ring is arranged in the inner side of the outer bearing ring, multiple the roller is respectively installed between the outer bearing ring and the inner bearing ring, the airflow sealing mechanism includes fixed frame component and rotating frame component, wherein, the fixed frame component is arranged in the both sides of the outer bearing ring, the rotating frame component is arranged in the both sides of the inner bearing ring.The sealed rolling bearing of the utility model embodiment, will form airflow barrier at clearance, effectively block external dust through sealing gap into bearing interior, while maintaining non-contact sealing low friction advantage, significantly improve dustproof sealing performance, realize the consideration of low friction and high efficiency dustproof.

Description

Technical Field

[0001] This utility model relates to the field of rolling bearing technology, and in particular to sealed rolling bearings. Background Technology

[0002] A rolling bearing is a precision mechanical component consisting of an inner ring, an outer ring, rolling elements, and a cage. Its core principle is to replace sliding friction with rolling friction, thereby efficiently supporting the rotating shaft and significantly reducing frictional resistance. It is widely used in various types of mechanical equipment and is a key fundamental component for achieving rotary motion.

[0003] Dustproof sealing is a key performance characteristic of rolling bearings. Existing sealed bearings mainly employ two sealing designs: contact and non-contact. Contact sealing relies on a rubber seal ring that fits tightly against the inner ring to block dust, while non-contact sealing utilizes the tiny gap between the metal dust cover and the inner ring to form a barrier. Both designs effectively enhance the dustproof sealing capability of the bearing by adding a dust ring structure.

[0004] However, technicians have found that existing dustproof rolling bearings still have certain defects. Although contact seals have good sealing performance, their rubber seals will continuously rub against the bearing rings during operation. After long-term use, they are prone to wear and aging, which can lead to deformation and a gradual decrease in sealing effect. Although non-contact seals avoid friction loss, the gap between the metal dust cover and the inner ring makes it difficult to effectively prevent fine dust from entering the bearing. Therefore, they are not good at protecting the bearing in dusty environments. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] Therefore, one objective of this utility model is to propose a sealed rolling bearing that, based on the traditional non-contact sealing structure, adds an airflow sealing mechanism composed of a fixed frame component and a rotating frame component. When the bearing is running, an airflow barrier is formed at the gap, effectively preventing external dust from entering the bearing through the sealing gap. While maintaining the low friction advantage of non-contact sealing, it significantly improves the dustproof sealing performance, achieving a balance between low friction and high-efficiency dustproofing.

[0007] To achieve the above objectives, the first aspect of this utility model provides a sealed rolling bearing, comprising: a bearing mechanism and an airflow sealing mechanism, wherein the bearing mechanism includes an outer bearing ring, an inner bearing ring, and a plurality of rollers, wherein the inner bearing ring is disposed inside the outer bearing ring, and the plurality of rollers are respectively installed between the outer bearing ring and the inner bearing ring, and the airflow sealing mechanism includes a fixed frame component and a rotating frame component, wherein the fixed frame component is disposed on both sides of the outer bearing ring, and the rotating frame component is disposed on both sides of the inner bearing ring.

[0008] In addition, the sealed rolling bearing proposed above according to this utility model may also have the following additional technical features: Specifically, the mounting bracket component includes two first mounting rings, two fixing rings, two shielding rings, and two air guide outer rings. The two first mounting rings are respectively fixedly mounted on both sides of the outer bearing ring, the two fixing rings are respectively fixedly mounted on the side of the two first mounting rings away from the outer bearing ring, and the two fixing rings are respectively provided with multiple ventilation holes. The two shielding rings are respectively fixedly connected to the inner side of the two fixing rings, and the two air guide outer rings are respectively fixedly connected to the inner rings of the two fixing rings.

[0009] Specifically, the rotating frame component includes two second mounting rings, two guide rings, two inner air guide rings, and multiple spiral blades. The two second mounting rings are respectively fixedly mounted on both sides of the inner bearing ring. The two guide rings are respectively fixedly connected to the outer rings of the two second mounting rings, and the corresponding guide rings and shielding rings have the same inclination angle. The two inner air guide rings are respectively fixedly connected to the inner rings of the two second mounting rings, and the corresponding inner air guide rings and outer air guide rings form a ventilation zone. The multiple spiral blades are respectively fixedly connected to the outer side of the corresponding inner air guide rings.

[0010] Compared with the prior art, this utility model has the following beneficial effects: Based on the traditional bearing structure, this utility model innovatively integrates an airflow sealing mechanism. When the bearing is running, the rotating frame component fixed to the inner bearing ring rotates accordingly. The spiral blades can drive the air to form a directional air curtain in the ventilation area composed of the inner and outer air guide rings. Under the guidance of the guide ring, the air curtain forms a barrier at the gap, preventing dust from entering the bearing. Thus, while maintaining the inherent advantages of low friction and low wear of non-contact sealing, it significantly improves the dustproof sealing performance of the bearing, achieving a balance between high-efficiency dustproofing and low-friction operation.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of a sealed rolling bearing according to an embodiment of the present invention.

[0013] Figure 2 This is an exploded view of a sealed rolling bearing according to an embodiment of the present invention.

[0014] Figure 3 This is a cross-sectional schematic diagram of a sealed rolling bearing according to an embodiment of the present invention.

[0015] Reference numerals: 1. Bearing mechanism; 11. Outer bearing ring; 12. Inner bearing ring; 13. Roller; 2. Airflow sealing mechanism; 21. Fixing frame component; 211. First mounting ring; 212. Fixing ring; 213. Vent; 214. Shielding ring; 215. Outer air guide ring; 22. Rotating frame component; 221. Second mounting ring; 222. Air guide ring; 223. Inner air guide ring; 224. Spiral blade. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] The sealed rolling bearing of this utility model is described below with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown, a sealed rolling bearing according to an embodiment of the present invention includes: a bearing mechanism 1 and an airflow sealing mechanism 2.

[0019] The bearing mechanism 1 includes an outer bearing ring 11, an inner bearing ring 12, and a plurality of rollers 13. The inner bearing ring 12 is disposed inside the outer bearing ring 11, and the plurality of rollers 13 are respectively installed between the outer bearing ring 11 and the inner bearing ring 12. It should be noted that in this embodiment, the bearing mechanism 1 can be replaced according to the usage environment, and replaced with an appropriate outer bearing ring 11, inner bearing ring 12, cage and multiple balls to improve the applicability of the bearing.

[0020] The airflow sealing mechanism 2 includes a fixed frame component 21 and a rotating frame component 22. The fixed frame component 21 is disposed on both sides of the outer bearing ring 11, and the rotating frame component 22 is disposed on both sides of the inner bearing ring 12.

[0021] Specifically, before using this sealed rolling bearing, the outer ring of the bearing needs to be fixedly installed to the external fixed base, and the inner ring of the support needs to be fixedly installed to the external drive shaft to complete the installation of this sealed rolling bearing.

[0022] When the drive shaft rotates, it will drive the inner bearing ring 12, which is fixedly installed with it, to rotate. The inner bearing ring 12 will then drive the rotating frame component 22 connected with it to rotate inside the fixed frame component 21, so that airflow is formed between the rotating frame component 22 and the fixed frame component 21, preventing dust from entering the bearing through the gap.

[0023] In one embodiment of this utility model, such as Figure 3 As shown, the mounting bracket component 21 includes two first mounting rings 211, two fixing rings 212, two shielding rings 214, and two air guide outer rings 215.

[0024] Two first mounting rings 211 are fixedly installed on both sides of the outer bearing ring 11, two fixing rings 212 are fixedly installed on the side of the two first mounting rings 211 away from the outer bearing ring 11, and multiple ventilation holes 213 are opened on the two fixing rings 212 respectively. Two shielding rings 214 are fixedly connected to the inner side of the two fixing rings 212 respectively, and two air guide outer rings 215 are fixedly connected to the inner ring of the two fixing rings 212 respectively.

[0025] The rotating frame component 22 includes two second mounting rings 221, two guide rings 222, two inner air guide rings 223, and multiple spiral blades 224.

[0026] Two second mounting rings 221 are fixedly mounted on both sides of the inner bearing ring 12. Two guide rings 222 are fixedly connected to the outer rings of the two second mounting rings 221, and the corresponding guide rings 222 and shielding rings 214 have the same inclination angle. Two inner air guide rings 223 are fixedly connected to the inner rings of the two second mounting rings 221, and the corresponding inner air guide rings 223 and outer air guide rings 215 form a ventilation zone. Multiple spiral blades 224 are fixedly connected to the outer side of the corresponding inner air guide rings 223.

[0027] Specifically, when the inner bearing ring 12 rotates, it drives the second mounting ring 221 to rotate, which in turn drives the inner air guide ring 223 and the spiral blade 224 to rotate. The spiral blade 224 draws outside air into the fixed ring 212 through the ventilation zone. Under the guidance of the guide ring 222, the airflow flows through the gap between the guide ring 222 and the shielding ring 214, preventing dust from entering the gap between them. Finally, the air flows out through the vent 213, forming an airflow circulation and improving the sealing performance of the bearing.

[0028] When the drive shaft drives the inner bearing ring 12 to rotate, the spiral blades 224 rotate in the opposite direction. At this time, the airflow is formed in the opposite direction. Air flows into the inner side of the fixed ring 212 through the vent and flows out from the ventilation area, thus achieving airflow sealing.

[0029] In summary, this invention's sealed rolling bearing cleverly utilizes the bearing's own rotation to drive the spiral vane 224 to rotate, forming a directional circulating airflow barrier at the sealing gap. This airflow effectively blocks external dust intrusion and, without physical contact, completely avoids friction loss and seal aging. This invention combines the low friction and long lifespan of non-contact seals with the high dustproof properties of contact seals, significantly improving the bearing's reliability and service life under harsh operating conditions.

[0030] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sealed rolling bearing, characterized in that, include: The bearing mechanism and the airflow sealing mechanism, among which, The bearing mechanism includes an outer bearing ring, an inner bearing ring, and multiple rollers, wherein, The inner bearing ring is disposed inside the outer bearing ring, and the plurality of rollers are respectively installed between the outer bearing ring and the inner bearing ring; The airflow sealing mechanism includes a fixed frame component and a rotating frame component, wherein... The fixed frame components are disposed on both sides of the outer bearing ring, and the rotating frame components are disposed on both sides of the inner bearing ring.

2. The sealed rolling bearing according to claim 1, characterized in that, The mounting bracket component includes two first mounting rings, two fixing rings, two shielding rings, and two air guide outer rings, wherein... The two first mounting rings are respectively fixedly installed on both sides of the outer bearing ring; The two fixing rings are respectively fixedly installed on the side of the two first mounting rings away from the outer bearing ring, and the two fixing rings are respectively provided with multiple ventilation holes; The two shielding rings are respectively fixedly connected to the inner sides of the two fixing rings; The two outer air guide rings are respectively fixedly connected to the inner rings of the two fixed rings.

3. The sealed rolling bearing according to claim 2, characterized in that, The rotating frame component includes two second mounting rings, two guide rings, two inner air guide rings, and multiple spiral blades, wherein... The two second mounting rings are respectively fixedly installed on both sides of the inner bearing ring; The two guide rings are respectively fixedly connected to the outer rings of the two second mounting rings, and the corresponding guide rings and shielding rings have the same tilt angle; The two inner air guide rings are respectively fixedly connected to the inner rings of the two second mounting rings, and the corresponding inner air guide rings and outer air guide rings form a ventilation zone; Multiple spiral blades are respectively fixedly connected to the outer side of the corresponding inner air guide ring.

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