Composite structure of three-lip sealing ring with reinforced framework and outer check ring cover

Abstract

The utility model discloses a composite structure of a three-lip sealing ring with a reinforced framework and an outer check ring cover. Comprising a three-lip sealing ring body, an annular inner framework, an annular rubber sealing piece, an outer sealing rubber ring, an arc-shaped convex ring, a limiting convex ring, a turnover outer ring edge, an arc-shaped inner groove, an inner sealing special-shaped lip edge, an outer sealing special-shaped lip edge, a lateral lip edge, a check ring cover body and a turnover inner ring edge. Abrasion loss in the bearing is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing accessories, in particular to the technical field of a composite structure of a three-lip sealing ring with a reinforced skeleton and an outer retaining ring cover. Background Art

[0002] Bearings are an important component in modern mechanical equipment. They are components that fix and reduce the load friction coefficient during mechanical transmission. When other components produce relative motion on the shaft, the bearing is used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. Its main function is to support the mechanical rotating body, reduce its friction coefficient during movement, and ensure its rotation accuracy. Bearings are generally composed of an outer ring, an inner ring, and rolling elements located between the inner and outer rings. The sealing performance is poor. During the rotation of the bearing, the lubricating grease inside the bearing is easily leaked due to poor sealing. External dust, moisture and foreign matter can easily invade the inside of the bearing, causing bearing wear, affecting the normal use of the bearing, and reducing the service life of the bearing. In order to better protect the bearing, it is necessary to propose the research and development of a composite structure of a reinforced skeleton three-lip seal and an outer retaining ring cover. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems in the prior art and propose a composite structure of a three-lip sealing ring with a reinforced skeleton and an outer retaining ring cover, which can prevent the grease in the bearing from overflowing, prevent foreign matter from entering the interior of the bearing, reduce wear and loss inside the bearing, and increase the service life of the bearing.

[0004] To achieve the above-mentioned purpose, the utility model proposes a composite structure of a three-lip sealing ring with a reinforced skeleton and an outer retaining ring cover, comprising a three-lip sealing ring body, an annular inner skeleton, an annular rubber seal, an outer sealing rubber ring, an arc-shaped convex ring, a limiting convex ring, a folded outer ring edge, an arc-shaped inner groove, an inner sealing special-shaped lip edge, an outer sealing special-shaped lip edge, a lateral lip edge, a retaining ring cover body and a folded inner ring edge, an annular inner skeleton is provided in the three-lip sealing ring body, an annular rubber seal is provided on the annular inner skeleton, an outer sealing rubber ring is provided on the outer diameter ring of the annular rubber seal, an arc-shaped convex ring with a circular arc cross section is provided on the right side of the outer sealing rubber ring, and an arc-shaped convex ring with a circular arc cross section is provided on the left side of the outer sealing rubber ring. The surface is a trapezoidal limiting convex ring, and the position of the annular inner skeleton corresponding to the outer sealing rubber ring is provided with a folded outer ring edge, the end of the folded outer ring edge is extended to be provided with an arc-shaped inner groove, and the folded outer ring edge is embedded in the inner sealing rubber ring, and the inner diameter ring of the annular rubber seal is provided with an inner sealing special-shaped lip and an outer sealing special-shaped lip, the inner sealing special-shaped lip is arranged obliquely to the lower left, and the outer sealing special-shaped lip is arranged obliquely to the lower right, and the middle part of the annular rubber seal is provided with a lateral lip, and the lateral lip is arranged obliquely to the upper right, and the outer side of the lateral lip is provided with a retaining ring cover body, and the inner diameter position of the retaining ring cover body is provided with a folded inner ring edge, and the folded inner ring edge is arranged horizontally to the right.

[0005] Preferably, the outer diameter of the limiting convex ring gradually increases from left to right, the outer diameter of the limiting convex ring is larger than the outer diameter of the arcuate convex ring, and the arcuate inner groove is embedded in the arcuate convex ring.

[0006] Preferably, the roots of the inner and outer sealing profiled lips are connected together, and a solid rubber ring with an arc-shaped cross section is provided at the connection portion between the root of the outer sealing profiled lip and the annular rubber seal.

[0007] Preferably, a bending reinforcement ring is provided at a position of the annular inner skeleton corresponding to the lateral lip, and the lateral lip is arranged to fit on the right side of the bending reinforcement ring.

[0008] Preferably, the retaining ring cover body is a hard skeleton body, and the outer diameter of the retaining ring cover body is the same as the outer diameter of the three-lip sealing ring body.

[0009] The beneficial effects of the utility model are as follows: the utility model combines the three-lip sealing ring body, the annular inner skeleton, the annular rubber seal, the outer sealing rubber ring, the arc-shaped convex ring, the limiting convex ring, the folded outer ring edge, the arc-shaped inner groove, the inner sealing special-shaped lip edge, the outer sealing special-shaped lip edge, the lateral lip edge, the retaining ring cover body and the folded inner ring edge together. After experimental optimization, the outer sealing rubber ring is closely matched with the groove of the bearing outer sleeve to prevent external pollutants from entering the bearing and ensure the bearing is intact. At the same time, it is also very good to ensure that the internal grease will not overflow from the outer diameter. The inner sealing special-shaped lip edge and the outer sealing special-shaped lip edge are matched with the outer diameter of the bearing inner sleeve to prevent The bearing grease overflows from the inner sleeve of the bearing under the internal pressure of the bearing, and the lateral lip is in close contact with the retaining ring cover body. The inner sealing profiled lip and the outer sealing profiled lip are used to prevent external pollutants from entering the bearing, ensuring the integrity of the bearing and preventing the grease in the bearing from overflowing. The lateral lip and the retaining ring cover body have an interference fit, which can prevent external pollutants from entering the bearing through the ring diameter, ensuring the integrity of the bearing. The retaining ring cover body is tightly fitted with the inner sleeve of the bearing, which can perfectly prevent external pollutants from entering the bearing from the inner sleeve of the bearing, and the outer diameter of the retaining ring cover body is only slightly smaller than the diameter of the bearing outer sleeve, which can largely prevent external pollutants from entering the bearing.

[0010] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the composite structure of the three-lip sealing ring and the outer retaining ring cover of the reinforced skeleton of the utility model.

[0012] In the figure: 1-three-lip sealing ring body, 2-annular inner skeleton, 3-annular rubber seal, 4-outer sealing rubber ring, 5-arc-shaped convex ring, 6-limiting convex ring, 7-folded outer ring edge, 8-arc-shaped inner groove, 9-inner sealing special-shaped lip edge, 10-outer sealing special-shaped lip edge, 11-lateral lip edge, 12-retaining ring cover body, 13-folded inner ring edge. DETAILED DESCRIPTION

[0013] See Figure 1The composite structure of the three-lip sealing ring and the outer retaining ring cover of the reinforced skeleton of the utility model includes a three-lip sealing ring body 1, an annular inner skeleton 2, an annular rubber seal 3, an outer sealing rubber ring 4, an arc-shaped convex ring 5, a limiting convex ring 6, a folded outer ring edge 7, an arc-shaped inner groove 8, an inner sealing special-shaped lip edge 9, an outer sealing special-shaped lip edge 10, a lateral lip edge 11, a retaining ring cover body 12 and a folded inner ring edge 13. The three-lip sealing ring body 1 is provided with an annular inner skeleton 2, the annular inner skeleton 2 is provided with an annular rubber seal 3, the annular rubber seal 3 is provided with an outer sealing rubber ring 4, the right side of the outer sealing rubber ring 4 is provided with an arc-shaped convex ring 5 with a circular arc cross section, the left side of the outer sealing rubber ring 4 is provided with a limiting convex ring 6 with a trapezoidal cross section, the position of the annular inner skeleton 2 corresponding to the outer sealing rubber ring 4 is provided with a folded outer ring edge 7, the end of the folded outer ring edge 7 is extended to be provided with an arc-shaped inner groove 8, the folded outer ring edge 7 is embedded in the outer sealing rubber ring 4, the inner diameter ring of the annular rubber seal 3 is provided with an inner sealing special-shaped lip 9 and an outer sealing special-shaped lip 10, The inner sealing shaped lip 9 is set obliquely to the lower left, the outer sealing shaped lip 10 is set obliquely to the lower right, the middle part of the annular rubber seal 3 is provided with a lateral lip 11, the lateral lip 11 is set obliquely to the upper right, and the outer side of the lateral lip 11 is correspondingly provided with a retaining ring cover body 12, and the inner diameter position of the retaining ring cover body 12 is provided with a folded inner ring edge 13, and the folded inner ring edge 13 is set horizontally to the right. The outer diameter of the limiting convex ring 6 gradually increases from left to right, and the outer diameter of the limiting convex ring 6 is larger than the outer diameter of the arc-shaped convex ring 5. The groove 8 is embedded in the inside of the arc-shaped convex ring 5, and the roots of the inner sealing profiled lip 9 and the outer sealing profiled lip 10 are connected together. The connection part between the root of the outer sealing profiled lip 10 and the annular rubber seal 3 is provided with a solid rubber ring with an arc-shaped cross-section. The position of the annular inner skeleton 2 corresponding to the lateral lip 11 is provided with a bent reinforcement ring, and the lateral lip 11 is fitted on the right side of the bent reinforcement ring. The retaining ring cover body 12 is a hard skeleton body, and the outer diameter of the retaining ring cover body 12 is the same as the outer diameter of the three-lip sealing ring body 1.

[0014] The utility model combines a three-lip sealing ring body 1, an annular inner skeleton 2, an annular rubber seal 3, an outer sealing rubber ring 4, an arcuate convex ring 5, a limiting convex ring 6, a folded outer ring edge 7, an arcuate inner groove 8, an inner sealing special-shaped lip edge 9, an outer sealing special-shaped lip edge 10, a lateral lip edge 11, a retaining ring cover body 12 and a folded inner ring edge 13. After experimental optimization, the outer sealing rubber ring 4 is closely matched with the groove of the bearing outer sleeve to prevent external pollutants from entering the bearing, ensuring that the bearing is intact, and at the same time, it is also very good to ensure that the internal grease will not overflow from the outer diameter. The inner sealing special-shaped lip edge 9 and the outer sealing special-shaped lip edge 10 are matched with the outer diameter of the bearing inner sleeve to prevent the bearing oil from leaking out. Grease overflows from the inner sleeve of the bearing under the internal pressure of the bearing, and the lateral lip 11 is in close contact with the retaining ring cover body 12. The inner sealing profiled lip 9 and the outer sealing profiled lip 10 are used to prevent external pollutants from entering the bearing, ensuring that the bearing is intact and preventing grease from overflowing from the bearing. The lateral lip 11 and the retaining ring cover body 12 have an interference fit, which can prevent external pollutants from entering the bearing through the ring diameter, ensuring that the bearing is intact. The retaining ring cover body 12 is tightly fitted with the inner sleeve of the bearing, which can perfectly prevent external pollutants from entering the bearing from the inner sleeve of the bearing, and the outer diameter of the retaining ring cover body 12 is only slightly smaller than the diameter of the bearing outer sleeve, which can largely prevent external pollutants from entering the bearing.

[0015] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. The composite structure of the reinforced skeleton three-lip seal ring and the outer retaining ring cover is characterized by: The invention comprises a three-lip sealing ring body (1), an annular inner frame (2), an annular rubber seal (3), an outer sealing rubber ring (4), an arcuate convex ring (5), a limiting convex ring (6), a folded outer ring edge (7), an arcuate inner groove (8), an inner sealing special-shaped lip edge (9), an outer sealing special-shaped lip edge (10), a lateral lip edge (11), a retaining ring cover body (12) and a folded inner ring edge (13), wherein the three-lip sealing ring body (1) is provided with an annular inner frame (2), an annular rubber seal (3) is provided on the annular inner frame (2), an outer sealing rubber ring (4) is provided on the outer diameter ring of the annular rubber seal (3), an arcuate convex ring (5) with a circular arc cross section is provided on the right side of the outer sealing rubber ring (4), a limiting convex ring (6) with a trapezoidal cross section is provided on the left side of the outer sealing rubber ring (4), the annular inner frame (2) A folded outer ring edge (7) is provided at a position corresponding to the outer sealing rubber ring (4), and an arc-shaped inner groove (8) is extended from the end of the folded outer ring edge (7). The folded outer ring edge (7) is embedded in the outer sealing rubber ring (4). The inner diameter ring of the annular rubber seal (3) is provided with an inner sealing shaped lip edge (9) and an outer sealing shaped lip edge (10). The inner sealing shaped lip edge (9) is provided obliquely to the lower left, and the outer sealing shaped lip edge (10) is provided obliquely to the lower right. A lateral lip edge (11) is provided in the middle of the annular rubber seal (3), and the lateral lip edge (11) is provided obliquely to the upper right. A retaining ring cover body (12) is provided on the outer side of the lateral lip edge (11). A folded inner ring edge (13) is provided at the inner diameter position of the retaining ring cover body (12), and the folded inner ring edge (13) is provided horizontally to the right.

2. The composite structure of the three-lip seal ring and the outer retaining ring cover of the reinforced frame according to claim 1 is characterized in that: The outer diameter of the limiting convex ring (6) gradually increases from left to right, and the outer diameter of the limiting convex ring (6) is larger than the outer diameter of the arc-shaped convex ring (5). The arc-shaped inner groove (8) is embedded in the arc-shaped convex ring (5).

3. The composite structure of the three-lip seal ring and the outer retaining ring cover of the reinforced frame according to claim 1 is characterized in that: The roots of the inner sealing shaped lip (9) and the outer sealing shaped lip (10) are connected together, and a solid rubber ring with an arc-shaped cross section is provided at the connection portion between the root of the outer sealing shaped lip (10) and the annular rubber seal (3).

4. The composite structure of the three-lip seal ring and the outer retaining ring cover of the reinforced frame according to claim 1 is characterized in that: A bending reinforcement ring is provided at a position of the annular inner skeleton (2) corresponding to the lateral lip (11), and the lateral lip (11) is arranged to fit on the right side of the bending reinforcement ring.

5. The composite structure of the three-lip seal ring and the outer retaining ring cover of the reinforced frame according to claim 1 is characterized in that: The retaining ring cover body (12) is a hard skeleton body, and the outer diameter of the retaining ring cover body (12) is the same as the outer diameter of the three-lip sealing ring body (1).

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