Sealing device of bearing

Abstract

The utility model relates to the technical field of bearing machinery, in particular to a sealing device of a bearing. The dune buggy or agricultural machinery is applied to areas such as sand beaches, gobi, wild fields and paddy fields, and the service environment is more severe than that of a common road vehicle. Foreign matters such as water and silt easily enter the bearing, lubrication failure is caused, and the service life of the bearing is shortened. According to the sealing device of the bearing, the sealing mechanisms are arranged at the two ends of the outer ring and the two ends of the inner ring respectively, the sealing mechanisms are arranged in a multi-lip mode, and the outer ring and the inner ring are sealed. Sediment, water and the like in the environment can be effectively prevented from entering the bearing, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing machinery technology, and more specifically to a sealing device for bearings. Background Technology

[0002] ATVs or agricultural machinery are used in harsher environments than ordinary road vehicles, such as beaches, deserts, wilderness, and paddy fields. Moisture, mud, and other foreign matter can easily enter the bearings, causing lubrication failure and shortening their lifespan. The reliability of the bearings directly affects the overall reliability of the vehicle or equipment, potentially leading to malfunctions and increased operating costs. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a sealing device for bearings with good sealing performance.

[0004] A bearing sealing device includes an outer ring, an inner ring, and steel balls. Sealing mechanisms are provided at both ends of the outer and inner rings. These sealing mechanisms are multi-lipped, sealing the outer and inner rings. This invention effectively prevents mud, sand, and moisture from entering the bearing, thus improving its service life.

[0005] The sealing mechanism includes a retaining strip, a sealing ring, and a pressure cap. The sealing ring is fitted onto the retaining strip, and the retaining strip and pressure cap are spaced apart. The pressure cap is semi-I-shaped, with a first oblique sealing lip on the upper outer side and a second sealing lip on the inner side. At least one third sealing lip, forming a V-shape with the sealing ring body, is provided between the retaining strip and the pressure cap. This practical structure is reasonable and can provide sealing on the inner and outer sides and in the middle, effectively preventing mud, sand, and moisture from the environment from entering the bearing, thus improving the bearing's service life.

[0006] The sealing mechanism also includes a fourth sealing lip located below the third sealing lip. This rational structure further enhances the seal, effectively preventing mud, sand, and moisture from entering the bearing and thus improving its service life.

[0007] As a further improvement and supplement to the above solution, this utility model also includes the following additional technical features:

[0008] The aforementioned baffle has a folded structure. It has a reasonable structure and good strength.

[0009] The outer ring has rounded ends for easy assembly with other parts.

[0010] The sealing ring is made of NBR. This improves the sealing ring's resistance to oil and water, preventing mud, sand, and moisture from entering the bearing, thus extending bearing life, reducing operating costs, and enabling it to withstand low temperatures.

[0011] The following benefits can be achieved by using this utility model: The utility model has a reasonable and compact structure, enhances the sealing structure, effectively improves the sealing effect, prevents moisture and mud from entering the bearing, improves the life of the sealing ring under harsh conditions, improves the service life of the bearing, and reduces production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This utility model Figure 1 A magnified view of a portion at point A shown. Detailed Implementation

[0014] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0015] like Figure 1-2 As shown, this utility model is a sealing device for a bearing.

[0016] The bearing sealing device described in this embodiment includes an outer ring 1, an inner ring 2, and steel balls 3. Sealing mechanisms 4 are provided at both ends of the outer ring 1 and the inner ring 2. The sealing mechanisms 4 are multi-lipped to seal the outer ring 1 and the inner ring 2.

[0017] The sealing mechanism 4 includes a retaining strip 41, a sealing ring 42, and a pressure cap 43. The sealing ring 42 is fitted onto the retaining strip 41, and the sealing ring 42 and the retaining strip 41 are interference-fitted. The retaining strip 41 and the pressure cap 43 are spaced apart. The pressure cap 43 is semi-I-shaped, i.e., a three-sided closed arrangement. The pressure cap 43 has a first oblique sealing lip on its outer upper side and a second sealing lip on its inner transverse side. At least one third sealing lip is provided between the retaining strip 41 and the pressure cap 43, forming a V-shape with the main body of the sealing ring 42. The third sealing lip is obliquely positioned to seal against the pressure cap 43. The first, second, and third sealing lips are all provided on the sealing ring 42. The length of the third sealing lip is greater than the lengths of the first and second sealing lips. The first sealing lip blocks the outside of the bearing, while the second and third sealing lips reinforce the seal between the retaining strip 41 and the pressure cap 43. The multiple sealing lips effectively prevent mud, sand, water, and other contaminants from entering the bearing.

[0018] The sealing mechanism 4 also includes a fourth sealing lip located below the third sealing lip. The fourth sealing lip is disposed on the sealing ring 42 and is obliquely positioned to the pressure cap 43, further strengthening the structure. The first, second, third, and fourth sealing lips have rectangular cross-sections and are connected to the main body of the sealing ring 42 by an arc, resulting in good strength.

[0019] Furthermore, the baffle 41 has a folded structure and is positioned opposite to the pressure cap 43.

[0020] Furthermore, the outer ring 1 has rounded transitions at both ends, making it easy to install or disassemble.

[0021] Furthermore, the sealing ring 42 is made of NBR, which has good strength and a long service life.

[0022] The above are preferred embodiments of the present utility model and do not limit the scope of protection of the present utility model. Any modifications and improvements made by those skilled in the art based on the design concept of the present utility model should be considered within the scope of protection of the present utility model.

Claims

1. A sealing device for a bearing, comprising an outer ring (1), an inner ring (2), and steel balls (3), characterized in that: The outer ring (1) and the inner ring (2) are respectively provided with sealing mechanisms (4) at both ends. The sealing mechanism (4) is a multi-lip design to seal the outer ring (1) and the inner ring (2). The sealing mechanism (4) includes a baffle (41), a sealing ring (42), and a pressure cap (43). The sealing ring (42) is fitted on the baffle (41), and the baffle (41) and the pressure cap (43) are spaced apart. The pressure cap (43) is in a semi-I-shape. The pressure cap (43) has a first sealing lip on the upper outer side and a second sealing lip on the inner side. At least one third sealing lip is provided between the baffle (41) and the pressure cap (43) in a V-shape with the main body of the sealing ring (42). The sealing mechanism (4) further includes a fourth sealing lip located below the third sealing lip.

2. The bearing sealing device as described in claim 1, characterized in that: The baffle (41) has a folded structure.

3. The bearing sealing device as described in claim 1, characterized in that: The outer ring (1) has rounded transitions at both ends.

4. The bearing sealing device as described in claim 1, characterized in that: The sealing ring (42) is made of NBR.

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