Farm machine bearing opening curled edge sealing ring

Abstract

The utility model discloses a bearing opening curled edge sealing ring for agricultural machinery. The bearing opening curled edge sealing ring comprises a framework ring and a rubber ring arranged on the framework ring, a vertical ring is arranged on the outer wall of the framework ring; a turned edge is arranged at the tail end of the vertical ring; a plurality of openings are formed in the curled edge; the inner wall of the outer ring of the bearing is provided with a sealing groove; the depth of the vertical ring is greater than the width of the sealing groove; the inner bottom of the opening is positioned at the tail end of the vertical ring; the distance between every two adjacent openings on the circumference is smaller than or equal to 6.5 times of the width of each opening. The vertical ring completely seals the sealing groove, the inner bottom end of the opening is far away from the sealing groove, the opening and nearby gaps are not communicated with the sealing groove, and therefore the sealing performance of the sealing ring is improved. The distribution density of the openings in the sealing ring is increased, the sealing effect of the sealing ring is improved, and the installation difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural machinery parts, and in particular relates to an open-end rolled edge sealing ring for agricultural machinery bearings. Background Technology

[0002] Agricultural machinery bearing seals are components placed between the inner and outer rings of the bearing. Their main function is to protect the lubricating medium (usually grease) inside the bearing from leakage and to prevent external mud, water, dust, etc., from entering the bearing. This avoids problems such as grease burning and bearing damage caused by external impurities, keeping the bearing's rotating cavity clean and extending its service life. Agricultural machinery bearings are used for extended periods in environments containing mud, sand, and dust. This harsh working environment places special requirements on the sealing structure and installation of the seals. A common installation method for the outer diameter of the seal is an open-edge crimping followed by stamping assembly.

[0003] Chinese patent document CN206234278U discloses a bearing for agricultural machinery, including an inner ring, an outer ring, a row of steel balls located between the inner and outer rings, and a cage for enclosing the steel balls. A sealing ring is provided between the inner and outer rings, and the number of sealing rings is two, which cover the steel balls and the cage. A retaining ring and an outer cover are pressed onto one end of the bearing. One end of the inner ring abuts against the retaining ring, and one end of the outer ring abuts against the outer cover. The outer cover wraps around the outer edge of the outer ring from one end and forms a rolled edge at the other end of the outer ring to fasten it. The retaining ring has a first flange extending outward, and the outer cover has a second flange extending inward. The second flange is located outside the first flange, and a felt sealing oil ring is provided between the second flange and the first flange.

[0004] As described in the aforementioned patent, the agricultural machinery bearing seal ring features a rolled edge and an opening. The opening provides space for the rolled edge to deform elastically, facilitating the seal ring's press-fitting into the bearing and maintaining high installation strength through the elastic deformation of the metal. However, the opening of the rolled edge extends to the bottom plane of the rolled edge. During processing, gaps can easily form at the opening after the rolled edge is stamped, resulting in poor sealing performance of the rolled edge seal ring. Mud, water, and sand from outside the bearing can then enter the bearing, causing damage. Utility Model Content

[0005] To overcome the technical problem in existing agricultural machinery bearing rolled edge seals where the opening extends to the bottom plane of the rolled edge, easily creating gaps during rolling and stamping, resulting in poor sealing performance, this invention aims to provide an open rolled edge seal for agricultural machinery bearings. The new structure features a vertical ring on the outer diameter of the seal with a depth greater than the width of the bearing's outer ring sealing groove. The rolled edge is located at the end of the vertical ring, and the opening is only located on the rolled edge. This prevents the gap at the opening after rolling and stamping from communicating with the sealing groove, thus preventing communication with the bearing's interior. Simultaneously, it increases the number of equally spaced openings by 20%-30%, improving the bearing's sealing performance.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an open-end rolled-edge sealing ring for agricultural machinery bearings, comprising a skeleton ring and a rubber ring disposed on the skeleton ring; a vertical ring is disposed on the outer wall of the skeleton ring; the end of the vertical ring is located on the inner side of the skeleton ring and is provided with a rolled edge; a plurality of openings are provided on the rolled edge and evenly distributed along the circumferential direction; wherein, a sealing groove is disposed on the inner wall of the outer ring of the bearing; the depth of the vertical ring is greater than the width of the sealing groove; the inner bottom of the opening is located at the end of the vertical ring; the circumferential distance between two adjacent openings is less than or equal to 6.5 times the width of the opening.

[0007] The increased number of openings on the rolled edge seal means that, while greater deformation capacity is achieved during the stamping process, resulting in a tighter interference fit and improved sealing, gaps near the openings are more likely to occur and become more noticeable. By placing the openings on the rolled edge, away from the sealing groove, gaps near the openings will not connect with the sealing groove, thus preventing seal failure.

[0008] Furthermore, the inner wall of the rubber ring is provided with a thickened ring; the thickened ring is located on the side of the skeleton ring facing the bearing roller; the inner wall of the thickened ring is provided with an inner lip that abuts against the inner ring of the bearing; the inner lip is inclined towards the skeleton ring.

[0009] Specifically, a gap is provided between the inner wall of the skeleton ring and the inner ring of the bearing; a release groove is provided between the inner lip and the skeleton ring.

[0010] The skeleton ring does not contact the inner ring of the bearing. The release groove reserves space for the elastic deformation of the inner lip. After the sealing ring is pressed into the bearing, the inner lip abuts against the inner ring of the bearing under elastic action, thus achieving a seal.

[0011] Furthermore, the skeleton ring includes an outer ring, a first-stage stepped ring disposed on the inner wall of the outer ring, and a second-stage stepped ring disposed on the inner wall of the first-stage stepped ring; the vertical ring is disposed on the outer wall of the outer ring, and the rubber ring is disposed on the side of the first-stage stepped ring facing the bearing roller.

[0012] Specifically, the side of the first-stage stepped ring away from the bearing roller is flush with the end of the vertical ring; the side of the first-stage stepped ring away from the bearing roller is flush with the side of the second-stage stepped ring facing the bearing roller.

[0013] The first-level stepped ring and the second-level stepped ring increase the structural strength of the skeleton ring, and the depth of the first-level stepped ring and the second-level stepped ring also facilitates stamping.

[0014] Specifically, the first-stage stepped ring and the second-stage stepped ring are located between the inner and outer rings of the bearing.

[0015] Furthermore, the thickness of the skeleton ring is equal to the thickness of the inner lip.

[0016] Furthermore, the width of the first-level step ring is greater than or equal to twice the width of the second-level step ring.

[0017] Furthermore, the thickened ring has a beveled edge on the side facing the bearing roller; the beveled edge faces the outer periphery of the rubber ring; the thickened ring has a vertical edge on the side away from the bearing roller; the vertical edge abuts against the secondary stepped ring.

[0018] Furthermore, the width of the inner lip is greater than the width of the release groove.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model has a vertical ring on the outer wall of the skeleton ring with a width greater than the width of the bearing outer ring sealing groove, and an opening at the end of the vertical ring. The vertical ring completely closes the sealing groove, and the bottom end of the opening is far away from the sealing groove. After the sealing ring is pressed in, the opening and the gaps nearby will not communicate with the sealing groove, that is, they will not communicate with the inside of the bearing, thereby increasing the sealing performance of the sealing ring.

[0021] 2. This utility model increases the distribution density of openings on the sealing ring, and the skeleton ring is interference-fitted onto the outer ring of the bearing, making it easier to release stress on the skeleton ring during the press-fitting process, which helps to increase the sealing effect of the sealing ring and reduce the installation difficulty.

[0022] 3. By setting a first-level stepped ring, a second-level stepped ring, and a vertical ring, this utility model increases the structural strength of the skeleton ring while also facilitating its processing. In addition, the inner lip of the rubber ring is set on the thickened ring and a release groove is also provided, which gives the inner lip greater elastic deformation capability and increases the sealing performance of the sealing ring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the installation structure of this utility model.

[0025] In the diagram: 1. Inner ring; 2. Outer ring; 21. Sealing groove; 3. Skeleton ring; 31. Rolled edge; 32. Opening; 33. First-level stepped ring; 34. Second-level stepped ring; 35. Vertical ring; 36. Spacing seam; 37. Outer ring; 4. Rubber ring; 41. Thickened ring; 42. Inner lip; 43. Release groove. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0028] Furthermore, 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 technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] See Figures 1-2An open-edge rolled seal ring for agricultural machinery bearings includes a skeleton ring 3 and a rubber ring 4 disposed on the skeleton ring 3; a vertical ring 35 is disposed on the outer wall of the skeleton ring 3 on the side away from the bearing roller; the end of the vertical ring 35 is disposed on the inner side of the skeleton ring 3 with a rolled edge 31; a plurality of openings 32 are disposed on the rolled edge 31 evenly distributed along the circumferential direction.

[0031] The inner wall of the outer ring 2 of the bearing is provided with a sealing groove 21; the depth of the vertical ring 35 is greater than the width of the sealing groove 21; the vertical ring 35 seals the sealing groove 21; the inner bottom of the opening 32 is located at the end of the vertical ring 35; the circumferential distance between two adjacent openings 32 is less than or equal to 6.5 times the width of the opening; compared with the rolled edge sealing ring commonly used in the art, the number of equal openings is increased by 20%-30%, thereby improving the sealing performance of the bearing.

[0032] The skeleton ring 3 includes an outer ring 37, a first-stage stepped ring 33 coaxially disposed on the inner wall of the outer ring 37, and a second-stage stepped ring 34 coaxially disposed on the inner wall of the first-stage stepped ring 33; the vertical ring 35 is disposed on the outer wall of the outer ring 37; and the rubber ring 4 is disposed on the side of the first-stage stepped ring 33 facing the bearing roller.

[0033] The inner wall of the rubber ring 4 is provided with a thickened ring 41; the thickened ring 41 is located on the side of the skeleton ring 3 facing the bearing roller; the inner wall of the thickened ring 41 is provided with an inner lip 42 that abuts against the inner ring 1 of the bearing; the inner lip 42 is inclined towards the skeleton ring 3.

[0034] The thickened ring 41 has a beveled edge on the side facing the bearing roller; the beveled edge faces the outer periphery of the rubber ring 4; the thickened ring 41 has a vertical edge on the side away from the bearing roller; the vertical edge abuts against the secondary stepped ring 34. A gap 36 is provided between the inner wall of the skeleton ring 3 and the inner ring 1 of the bearing; a release groove 43 is provided between the inner lip 42 and the skeleton ring 3.

[0035] The side of the first-stage stepped ring 33 away from the bearing roller is flush with the end of the vertical ring 35; the side of the first-stage stepped ring 33 away from the bearing roller is flush with the side of the second-stage stepped ring 34 facing the bearing roller.

[0036] The first-stage stepped ring 33 and the second-stage stepped ring 34 are located between the inner ring 1 and the outer ring 2 of the bearing; the thickness of the skeleton ring 3 is equal to the thickness of the inner lip 42; the width of the first-stage stepped ring 33 is greater than or equal to twice the width of the second-stage stepped ring; the width of the inner lip 42 is greater than the width of the release groove 43.

[0037] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An agricultural machinery bearing split collar seal, characterized by: The skeleton ring is provided with a vertical ring on the outer wall, and the end of the vertical ring is provided with a curled edge on the inner side of the skeleton ring; the curled edge is provided with a plurality of openings uniformly distributed in the circumferential direction; wherein the outer ring of the bearing is provided with a sealing groove on the inner wall; the depth of the vertical ring is greater than the width of the sealing groove; the inner bottom of the opening is located at the end of the vertical ring; the distance between adjacent two openings in the circumferential direction is less than or equal to 6.5 times the width of the opening.

2. The crimped seal ring of claim 1, wherein: The inner wall of the rubber ring is provided with a thickened ring; the thickened ring is located on the side of the skeleton ring facing the bearing roller; the inner wall of the thickened ring is provided with an internal tangent lip abutting against the inner ring of the bearing; the internal tangent lip is inclined to the side of the skeleton ring.

3. The crimped seal ring of claim 2, wherein: The inner wall of the skeleton ring and the inner ring of the bearing are provided with a spacing gap; the internal tangent lip and the skeleton ring are provided with a release groove.

4. The crimped seal ring of claim 2, wherein: The skeleton ring includes an outer ring, a first stepped ring provided on the inner wall of the outer ring, and a second stepped ring provided on the inner wall of the first stepped ring; the vertical ring is provided on the outer wall of the outer ring, and the rubber ring is provided on the side of the first stepped ring facing the bearing roller.

5. The crimped seal ring of claim 4, wherein: The side of the first stepped ring away from the bearing roller is flush with the end of the vertical ring; the side of the first stepped ring away from the bearing roller is flush with the side of the second stepped ring facing the bearing roller.

6. The crimped seal ring of claim 4, wherein: The first stepped ring and the second stepped ring are located between the inner ring and the outer ring of the bearing.

7. A crimped seal ring as claimed in any one of claims 2 to 6, wherein: The thickness of the skeleton ring is equal to the thickness of the internal tangent lip.

8. The seamed gasket of any one of claims 4-6, wherein: The width of the first stepped ring is greater than or equal to 2 times the width of the second stepped ring.

9. The seamed gasket of any one of claims 4-6, wherein: The side of the thickened ring facing the bearing roller is provided with an inclined edge; the inclined edge faces the outer periphery of the rubber ring; the side of the thickened ring away from the bearing roller is provided with a vertical edge; the vertical edge abuts against the second stepped ring.

10. The crimped seal ring of claim 3, wherein: The width of the internal tangent lip is greater than the width of the release groove.

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