Waterproof sealing insert bearing

Abstract

The utility model relates to the technical field of bearings, in particular to a waterproof sealing insert bearing which comprises a bearing inner ring, a bearing outer ring, a retainer and a steel ball, a sealing assembly is arranged between the bearing inner ring and the bearing outer ring and comprises a set of inner sealing assembly and a set of outer sealing assembly, and the inner sealing assembly comprises an inner sealing framework and an inner sealing piece; the outer sealing assembly comprises an outer sealing framework and an outer sealing piece. According to the waterproof sealing insert bearing, through mutual matching of the inner sealing framework, the inner sealing piece, the outer sealing framework and the outer sealing piece which are specially designed, multiple seals can be formed, the sealing performance of the bearing is greatly improved, meanwhile, the strength between the sealing pieces is guaranteed, and the service life of the bearing is greatly prolonged.

Description

Technical Field

[0001] This application relates to the field of bearing technology, and in particular to a waterproof, sealed spherical bearing. Background Technology

[0002] The original spherical roller bearing consisted of an outer ring, inner ring, steel balls, cage, set screw, rubber seal, and dust cover. Because spherical roller bearings are mostly used in agricultural machinery, mining machinery, textile machinery, and conveyor belt systems, the operating environment is relatively harsh, with high levels of moisture and dust. The original ordinary sealing structure was not ideal, allowing moisture and dust to easily penetrate the bearing cavity, causing premature bearing damage. Utility Model Content

[0003] The purpose of this application is to provide a new type of waterproof and sealed spherical bearing to solve the technical problem of poor dustproof and waterproof sealing performance in the original bearing.

[0004] To achieve the above objectives, this utility model provides a waterproof and sealed spherical bearing, including an inner bearing ring, an outer bearing ring, a cage, and steel balls. A sealing assembly is provided between the inner bearing ring and the outer bearing ring, and the sealing assembly includes a set of inner sealing assemblies and a set of outer sealing assemblies.

[0005] The inner sealing assembly includes an inner sealing skeleton and an inner sealing element. The inner sealing element has a fitting portion. The outer wall of the bearing inner ring has an arc-shaped sealing groove that allows the fitting portion to be inserted. The end of the inner sealing element away from the fitting portion has a plug-in portion. The inner sealing skeleton has a plug-in section that can be inserted into the plug-in portion. The end of the inner sealing skeleton away from the plug-in portion has a snap-fit ​​section. The inner wall of the bearing outer ring has a snap-fit ​​groove that allows the snap-fit ​​section to be snapped into.

[0006] The external sealing assembly includes an external sealing skeleton and an external sealing element. The external sealing skeleton has a fixing part, which is fixed to the outer wall of the inner ring of the bearing. The external sealing skeleton has a cover part perpendicular to the fixing part, which covers the side end face of the outer ring of the bearing. The external sealing element is fixed to the inner wall of the cover part, and one end of the external sealing element has a first lip that is interference-fitted with the side end face of the outer ring of the bearing.

[0007] To ensure the effectiveness and firmness of the sealing of the inner seal, the fitting part has two opposing second lips, one end of which is interference-fitted with the arc-shaped sealing groove, and the other end extends to the outside of the arc-shaped sealing groove.

[0008] Furthermore, in order to give the inner seal a certain deformation force, a conical opening is formed between the two second lips, and the conical opening gradually decreases from the end near the arc-shaped sealing groove to the end away from the arc-shaped sealing groove.

[0009] To ensure a tighter fit between the sealing skeleton and the inner seal, thereby further improving the sealing effect, the insertion part includes an insertion groove, an inclined section connected to the insertion groove, and a vertical section connected to the inclined section. The insertion section of the inner seal skeleton is inserted into the insertion groove, the snap-fit ​​section abuts against the vertical section, and a bent section is provided between the insertion section and the snap-fit ​​section. The bent section abuts against the inclined section, and the other end face of the vertical section relative to the snap-fit ​​section abuts against the inner end face of the outer ring of the bearing.

[0010] To ensure a more secure installation of the sealing frame, the snap-fit ​​section has a reinforcing section that bends outward and fits against the outer end face of the snap-fit ​​section. The snap-fit ​​section and the reinforcing section are snapped into a groove on the inner wall of the outer ring of the bearing.

[0011] Because there is a large gap between the inner sealing component and the outer sealing component, in order to further ensure the sealing performance and the strength between the inner sealing component and the outer sealing component, the outer end of the inner sealing component has a third lip, which extends outward and abuts against the inner wall of the cover portion.

[0012] The beneficial effects of this utility model are as follows: The waterproof sealed spherical bearing, through the cooperation of a specially designed inner sealing skeleton, inner sealing element, outer sealing skeleton, and outer sealing element, can form multiple seals, which greatly enhances the sealing performance of the bearing, while ensuring the strength between each sealing element, and greatly improves the service life of the bearing. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the waterproof and sealed outer spherical bearing of this utility model;

[0014] Figure 2 This is a cross-sectional view of the internal sealing component of this utility model;

[0015] Figure 3 This is a cross-sectional view of the external sealing component of this utility model. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0017] like Figure 1 The waterproof and sealed spherical bearing shown includes an inner bearing ring 1, an outer bearing ring 2, a cage 3, and steel balls 4. A sealing assembly is provided between the inner bearing ring 1 and the outer bearing ring 2. The sealing assembly includes a set of inner sealing assemblies 5 and a set of outer sealing assemblies 6, and the sealing is achieved through the two sets of sealing assemblies.

[0018] Specifically, in combination Figure 2As shown, the inner sealing assembly includes an inner sealing skeleton and an inner sealing element. The inner sealing element has a fitting portion. The outer wall of the bearing inner ring 1 has an arc-shaped sealing groove 101 for the fitting portion to be inserted. The fitting portion has two opposing second lips 502. One end of each second lip 502 is interference-fitted with the arc-shaped sealing groove 101, and the other end extends outside the arc-shaped sealing groove 101. The two second lips 502 are V-shaped, forming a conical opening. The conical opening gradually decreases in size from the end near the arc-shaped sealing groove 101 to the end away from the arc-shaped sealing groove 101, so that the two second lips 502 have a certain deformation space. The end of the inner sealing element away from the fitting portion has an insertion portion. The inner sealing skeleton has an insertion section 511, and the end of the inner sealing skeleton away from the insertion portion has a snap-fit ​​section 513. The inner wall of the bearing outer ring 2 is provided with a slot 201 for the snap-fit ​​section 513 to be snapped into. The insertion part includes a slot 501, an inclined section 503 connected to the slot 501, and a vertical section 504 connected to the inclined section 503. The insertion section 511 of the inner sealing skeleton is inserted into the slot 501. The snap-fit ​​section 513 abuts against the vertical section 504. A bent section 512 is provided between the insertion section 511 and the snap-fit ​​section 513. The bent section 512 abuts against the inclined section 503. The other end face of the vertical section 504 relative to the snap-fit ​​section 513 abuts against the inner end face of the bearing outer ring 2. The snap-fit ​​section 513 has a reinforcing section 514 that bends outward and fits against the outer end face of the snap-fit ​​section 513. The snap-fit ​​section 513 and the reinforcing section 514 are snapped into the slot 201 on the inner wall of the bearing outer ring 2.

[0019] Specifically, in combination Figure 3 As shown, the outer sealing assembly includes an outer sealing skeleton and an outer sealing element 611. The outer sealing skeleton has a fixing part 601, which is fixed to the outer wall of the inner ring 1 of the bearing. The outer sealing skeleton has a cover part 602 perpendicular to the fixing part 601, that is, the fixing part 601 and the cover part 602 are L-shaped. The cover part 602 covers the side end face of the outer ring 2 of the bearing. The outer sealing element 611 is fixed to the inner wall of the cover part. The top of the outer sealing element 611 has a first lip 612 that is interference-fitted with the side end face of the outer ring 2 of the bearing. The first lip 612 is conical. In addition, the outer end of the inner sealing element has a third lip 505, which extends outward and abuts against the inner wall of the cover part 602.

[0020] This waterproof sealed spherical bearing achieves a first external seal through an interference fit between the first lip 612 and the side end face of the bearing outer ring 2. A second seal is formed by an interference fit between the two second lips 502 and the arc-shaped sealing groove 101, and by the snap-fit ​​section 513 and the reinforcing section 514 snapping into the groove 201 on the inner wall of the bearing outer ring 2. A third seal is formed by setting a third lip 505 between the inner and outer seals. This greatly enhances the bearing's sealing performance, ensures the strength between the seals, and significantly improves the bearing's service life.

[0021] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof sealed outer spherical bearing, comprising a bearing inner ring, a bearing outer ring, a retainer and steel balls, a sealing assembly is arranged between the bearing inner ring and the bearing outer ring, the sealing assembly comprises an inner sealing assembly and an outer sealing assembly, characterized in that: the inner sealing assembly comprises an inner sealing frame and an inner sealing piece, the inner sealing piece has an embedded part, an arc-shaped sealing groove capable of embedding the embedded part is arranged on the outer wall of the bearing inner ring, the end of the inner sealing piece away from the embedded part has a plug-in part, the inner sealing frame has a plug-in section capable of being inserted into the plug-in part, the end of the inner sealing frame away from the plug-in part has a clamping section, the inner wall of the bearing outer ring is provided with a clamping groove capable of clamping the clamping section; the outer sealing assembly comprises an outer sealing frame and an outer sealing piece, the outer sealing frame has a fixed part fixed with the outer wall of the bearing inner ring, the outer sealing frame has a covering part perpendicular to the fixed part, the covering part covers the end face of the side part of the bearing outer ring, the outer sealing piece is fixed to the inner wall of the covering part, one end of the outer sealing piece has a first lip edge in interference fit with the end face of the side part of the bearing outer ring.

2. The water-tight sealed external spherical bearing of claim 1, wherein: the embedded part has two oppositely arranged second lip edges, one end of the two second lip edges is in interference fit with the arc-shaped sealing groove, and the other end extends out of the arc-shaped sealing groove.

3. The water-tight sealed external spherical bearing of claim 2, wherein: a tapered opening is formed between the two second lip edges, the tapered opening gradually decreases from the end close to the arc-shaped sealing groove to the end away from the arc-shaped sealing groove.

4. The water-tight sealed external spherical bearing of claim 3, wherein: the plug-in part comprises a plug-in groove, a slope section connected with the plug-in groove, and a vertical section connected with the slope section, the plug-in section of the inner sealing frame is inserted into the plug-in groove, the clamping section abuts against the vertical section, a bending section is arranged between the plug-in section and the clamping section, the bending section abuts against the slope section, and the other end face of the vertical section relative to the clamping section abuts against the inner side end face of the bearing outer ring.

5. The water-tight sealed external spherical bearing of claim 4, wherein: the clamping section has a reinforcing section bent outward and abutting against the outer end face of the clamping section, the clamping section and the reinforcing section are clamped into the clamping groove in the inner wall of the bearing outer ring.

6. The water-tight sealed external spherical bearing of claim 5, wherein: the outer end of the inner sealing piece has a third lip edge extending outward and abutting against the inner wall of the covering part.

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