Reinforced two-layer sealed bearing

Abstract

The utility model relates to a reinforced two-layer sealed bearing which comprises an inner ring and an outer ring, and a sealing groove is formed between the inner ring and the outer ring. According to the reinforced two-layer sealed bearing disclosed by the utility model, the multi-lip rubber part of the multi-lip hemming rubber-hanging dustproof cover is tightly attached to the outer diameter of the inner ring, so that grease leakage can be effectively prevented, the lubrication of the internal environment of the bearing is ensured, the difficulty that external foreign matters invade into the bearing can be increased, the sealing performance of the bearing is improved, and the service life of the bearing is prolonged. The multi-lip rubber part of the multi-lip rubber hanging check ring is in interference sealing fit with the multi-lip hemming rubber hanging dustproof cover to form a multi-labyrinth type sealing structure, so that foreign matters can be further effectively prevented from invading into the bearing, the sealing performance of the bearing is improved, the multi-lip rubber hanging check ring can generate certain centrifugal force along with the rotation of the inner ring while the inner ring rotates, and the sealing performance of the bearing is improved. Therefore, foreign matters such as mud, pollutants and weeds can be effectively thrown away from the bearing, and the risk that the bearing is wound by the weeds is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, concretely relates to a reinforced two -layer sealed bearing. BACKGROUND

[0002] At present, in the field of agricultural machinery, garden machinery and the like, the use environment of bearings is usually relatively bad, and there are a large amount of weeds, crop residues and the like. These sundries are easy to wind on the bearing, affect the normal operation of the bearing, reduce the working efficiency, and even cause the bearing to be damaged. Therefore, it has important practical significance to develop an effective anti-winding grass bearing sealing structure. Then the common sealing structure on the market is generally single-layer sealing and double-layer sealing; Single-layer sealing structure: this sealing structure is simple, low in cost, but the sealing effect is limited, and it is difficult to effectively prevent the winding of grass and sundries; and double-layer sealing: compared with single-layer sealing, the sealing effect of double-layer sealing is improved, but when facing a large amount of grass and sundries, sealing failure still easily occurs. SUMMARY

[0003] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a reinforced two-layer sealed bearing which can have good sealing effect and prevent grass from winding and pressing the bearing during farming.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of a reinforced two-layer sealed bearing, which comprises an inner ring and an outer ring, the inner ring is arranged in the outer ring to form a sealing groove, a plurality of lip edge rubberized dust covers and a plurality of lip rubberized retaining rings are arranged on both sides of the sealing groove, the upper part of the plurality of lip edge rubberized dust covers is fixed on the outer ring, the plurality of lip rubberized parts of the plurality of lip edge rubberized dust covers are tightly combined with the outer diameter of the inner ring, the bottom of the plurality of lip rubberized retaining rings is fixed on the inner ring, and the plurality of lip rubberized parts of the plurality of lip rubberized retaining rings are in interference sealing cooperation with the plurality of lip edge rubberized dust covers.

[0005] The inner wall of the outer ring is provided with a knurling layer matched with the plurality of lip edge rubberized dust covers.

[0006] The outer wall of the inner ring is provided with a boss, the plurality of lip edge rubberized dust covers are arranged on the boss, and the bottom of the plurality of lip rubberized retaining rings is arranged on one side of the boss.

[0007] The contact part between the plurality of lip edge rubberized dust covers and the plurality of lip rubberized parts of the plurality of lip rubberized retaining rings is arranged in a slope.

[0008] The plurality of lip rubberized parts of the plurality of lip edge rubberized dust covers and the plurality of lip rubberized parts of the plurality of lip rubberized retaining rings are all three-lip rubberized parts.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] This utility model discloses a reinforced double-layer sealed bearing. The multi-lip rubber portion of the multi-lip rolled-edge glued dust cover tightly fits the outer diameter of the inner ring, effectively preventing grease leakage and ensuring lubrication of the bearing's internal environment. It also increases the difficulty for foreign objects to enter the bearing, improving its sealing performance. Furthermore, the multi-lip rubber portion of the multi-lip glued retaining ring and the multi-lip rolled-edge glued dust cover form a multi-labyrinth seal structure, further effectively preventing foreign objects from entering the bearing and improving its sealing performance. As the inner ring rotates, the multi-lip glued retaining ring generates centrifugal force, effectively throwing mud, contaminants, weeds, and other foreign objects away from the bearing, further reducing the risk of the bearing becoming entangled in weeds. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the bearing of this utility model;

[0012] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the multi-lip rolled edge glued dust cover of this utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the multi-lip adhesive retaining ring of this utility model.

[0015] The markings in the diagram are: 1. Inner ring; 2. Outer ring; 3. Sealing groove; 4. Multi-lip rolled edge adhesive dust cover; 5. Multi-lip adhesive retaining ring; 6. Multi-lip rubber part; 7. Boss; 8. Slope. Detailed Implementation

[0016] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0017] like Figures 1-4As shown, the embodiment provides a reinforced two-layer sealed bearing, which comprises an inner ring 1 and an outer ring 2, the inner ring 1 is placed in the outer ring 2 to form a sealing groove 3, the sealing groove 3 is provided with a multi-lip beaded rubber dust cover 4 and a multi-lip rubber dust seal 5 on both sides of the sealing groove 3, the upper part of the multi-lip beaded rubber dust cover 4 is fixed on the outer ring 2, the multi-lip rubber part 6 of the multi-lip beaded rubber dust cover 4 is tightly attached to the outer diameter of the inner ring 1, the bottom of the multi-lip rubber dust seal 5 is fixed on the inner ring 1, and the multi-lip rubber part 6 of the multi-lip rubber dust seal 5 is in interference sealing cooperation with the multi-lip beaded rubber dust cover 4. Specifically, the multi-lip rubber part 6 of the multi-lip beaded rubber dust cover 4 and the multi-lip rubber part 6 of the multi-lip rubber dust seal 5 are both three-lip rubber parts. The multi-lip rubber part 6 of the multi-lip beaded rubber dust cover 4 is tightly attached to the outer diameter of the inner ring 1, which can effectively prevent oil leakage and ensure the lubrication of the bearing internal environment. It can also increase the difficulty of foreign matter entering the bearing interior, improve the sealing performance of the bearing, and the multi-lip rubber part 6 of the multi-lip rubber dust seal 5 is in interference sealing cooperation with the multi-lip beaded rubber dust cover 4, forming a multi-labyrinth sealing structure, which can further effectively prevent foreign matter from entering the bearing interior and improve the sealing performance of the bearing. The inner ring 1 rotates while the multi-lip rubber dust seal 5 can produce a certain centrifugal force with the rotation of the inner ring 1, thereby effectively throwing away foreign matter such as mud, pollutants and weeds from the bearing, further reducing the risk of the bearing being entangled with grass.

[0018] Further, the inner wall of the outer ring 2 is provided with a knurled layer cooperating with the multi-lip beaded rubber dust cover 4. The setting of the knurled layer can greatly enhance the fastening force between the outer ring 2 and the multi-lip beaded rubber dust cover 4.

[0019] Further, the outer wall of the inner ring 1 is provided with a boss 7, the multi-lip beaded rubber dust cover 4 is located on the boss 7, and the bottom of the multi-lip rubber dust seal 5 is located on one side of the boss 7. The setting of the boss 7 can ensure that the multi-lip rubber dust seal 5 does not displace and interfere with the multi-lip beaded rubber dust cover 4 when the multi-lip rubber dust seal 5 is subjected to grass entanglement and extrusion impact, avoiding deformation of the internal and external sealing structures due to mutual interference, leading to sealing failure or even bearing seizure.

[0020] Further, the contact between the multi-lip rubber part 6 of the multi-lip beaded rubber dust cover 4 and the multi-lip rubber dust seal 5 is provided with a slope 8. The multi-lip rubber part 6 of the multi-lip rubber dust seal 5 can be in interference contact with the multi-lip beaded rubber dust cover 4 for a long time, so that the multi-lip rubber dust seal 5 can comprehensively protect the internal sealing of the multi-lip beaded rubber dust cover 4, avoiding direct contact between the internal environment of the bearing and the external environment.

[0021] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and the skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A reinforced double-sealed bearing, characterized in that: The device includes an inner ring and an outer ring. The inner ring is placed inside the outer ring to form a sealing groove. Both sides of the sealing groove are equipped with multi-lip rolled edge glued dust covers and multi-lip glued retaining rings. The upper part of the multi-lip rolled edge glued dust cover is fixed to the outer ring. The multi-lip rubber part of the multi-lip rolled edge glued dust cover is tightly fitted with the outer diameter of the inner ring. The bottom of the multi-lip glued retaining ring is fixed to the inner ring. The multi-lip rubber part of the multi-lip glued retaining ring and the multi-lip rolled edge glued dust cover are press-fit sealed together.

2. The reinforced double-sealed bearing according to claim 1, characterized in that: The inner wall of the outer ring is provided with a knurled layer that mates with the multi-lip rolled edge adhesive dust cover.

3. The reinforced double-sealed bearing according to claim 1, characterized in that: The outer wall of the inner ring has a protruding boss, the multi-lip rolled edge adhesive dust cover is located on the boss, and the bottom of the multi-lip adhesive retaining ring is located on one side of the boss.

4. The reinforced double-sealed bearing according to claim 1, characterized in that: The contact area between the multi-lip rolled edge adhesive dust cover and the multi-lip rubber part of the multi-lip adhesive retaining ring is sloped.

5. The reinforced double-sealed bearing according to claim 1, characterized in that: Both the multi-lip rubber portion of the multi-lip rolled edge adhesive dust cover and the multi-lip rubber portion of the multi-lip adhesive retaining ring are three-lip rubber portions.

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