CN222863915U - Sealing band and bearing - Google Patents
Sealing band and bearing Download PDFInfo
- Publication number
- CN222863915U CN222863915U CN202422067591.6U CN202422067591U CN222863915U CN 222863915 U CN222863915 U CN 222863915U CN 202422067591 U CN202422067591 U CN 202422067591U CN 222863915 U CN222863915 U CN 222863915U
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- sealing
- bearing
- belt
- outer ring
- inner ring
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- Rolling Contact Bearings (AREA)
Abstract
The utility model belongs to the technical field of bearing sealing, and relates to a sealing belt and a bearing. The sealing belt comprises a sealing belt body, wherein the sealing belt body comprises an inserting part and a sealing part which are of an integral structure, the sealing part comprises a transverse sealing lip extending along the direction of the inserting part and at least one longitudinal sealing lip arranged at the lower part of the transverse sealing lip, the bearing comprises an outer ring, an inner ring and rolling bodies arranged between the outer ring and the inner ring, the outer ring and the inner ring are arranged in a staggered mode along the axial direction, and the sealing belt is respectively arranged at the upper part and the lower part of the butt joint part of the outer ring and the inner ring. According to the utility model, the sealing part of the sealing belt is designed to be double-lip type, so that the sealing belt can be guaranteed to have better sealing performance, when the sealing belt is installed on a bearing for use, two paths of protection can be provided for the bearing, the transverse sealing lip can block large particle pollution, the longitudinal sealing lip can block invasion of external fine pollutants or water, and meanwhile, internal lubricating grease can be prevented from leaking.
Description
Technical Field
The utility model relates to a sealing belt and a bearing, and belongs to the technical field of bearing sealing.
Background
The sealing belt is an important part on the bearing, and when the outer ring and the inner ring of the bearing relatively rotate, the main function of the sealing belt is to prevent grease inside the bearing from leaking outwards and effectively prevent foreign matters such as external dust, rainwater and the like from entering the bearing, so that the normal operation of the bearing is ensured, and the service life of the bearing is prolonged. In the field of engineering machinery such as an automobile crane, a tower crane and an excavator, the application of the bearing is very wide, however, as the machinery often operates in a severe working environment, the phenomena of grease leakage inside the bearing and invasion of impurities such as external rainwater into the bearing become particularly remarkable, and the phenomenon is an important problem to be solved in the industry.
Currently, the design of a bearing sealing band commonly used in the market adopts a plane sealing surface, and the sealing effect is realized by tightly fitting the surfaces of the inner ring and the outer ring of the bearing. However, the design gradually shows a plurality of defects in the long-term use process, namely, on one hand, the sealing mode of plane contact is difficult to thoroughly avoid micro leakage of lubricating grease, and on the other hand, the aging, deformation or relaxation phenomena of the sealing band material are increasingly remarkable along with the increase of service time, so that the fit degree with the bearing outer ring is reduced, gaps are formed, and further the loss of lubricating grease and the penetration risk of external impurities are increased. In addition, the continuous rotary friction can accelerate the abrasion of the sealing surface, further weaken the sealing performance of the bearing and influence the overall efficiency of the bearing. More serious, the problem of sealing strip falling off is common in engineering machinery industry, which not only increases high after-sales and maintenance cost, but also seriously affects the normal operation of equipment.
It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.
Disclosure of utility model
The present utility model aims to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
The sealing belt comprises a sealing belt body, wherein the sealing belt body comprises an insertion part and a sealing part which are in an integrated structure, and the sealing part comprises a transverse sealing lip extending along the direction of the insertion part and at least one longitudinal sealing lip arranged at the lower part of the transverse sealing lip.
Compared with the prior art, the sealing device has the advantages that the sealing part of the sealing belt is designed to be double-lip type, so that the sealing belt can be guaranteed to have better sealing performance, when the sealing belt is installed on a bearing for use, two protection can be provided for the bearing, large particle pollution can be prevented by the transverse sealing lip, invasion of external fine pollutants or water can be prevented by the longitudinal sealing lip, and meanwhile, leakage of internal lubricating grease can be prevented.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, at least one sealing bulge is arranged on the sealing surface of the longitudinal sealing lip.
The beneficial effect of adopting above-mentioned further scheme is, can prevent the inside lubricating grease excessive loss of raceway further, be equipped with the barb on the insertion part.
The further scheme has the beneficial effects that the friction force of the contact of the sealing belt and the bearing can be enhanced, and the falling possibility of the sealing belt is reduced.
Further, a step is provided between the insertion portion and the sealing portion.
The beneficial effect of adopting above-mentioned further scheme is, the step can play the installation location and increase the effect of sealing part packing force.
Further, the sealing band is made of nitrile rubber materials.
The further scheme has the beneficial effects that the nitrile rubber material has excellent oil resistance, higher wear resistance and better heat resistance, and can effectively prolong the normal service life of the sealing belt
The bearing comprises an outer ring, an inner ring and rolling bodies arranged between the outer ring and the inner ring, wherein the outer ring and the inner ring are arranged in a staggered mode along the axial direction, and sealing belts are respectively arranged at the upper part and the lower part of the butt joint part of the outer ring and the inner ring.
Further, an annular slot is arranged at the upper part of the outer ring along the radial direction, and an annular seal groove is arranged at the lower part of the outer ring along the axial direction;
The upper part of the inner ring is axially provided with an annular sealing groove, and the lower part of the inner ring is radially provided with an annular slot;
The plug-in part of the sealing belt is inserted into the annular slot, the longitudinal sealing lip of the sealing belt is inserted into the annular sealing groove, and the transverse sealing lip of the sealing belt is abutted against the outer ring or the outer ring.
The sealing belt has the beneficial effects that the transverse sealing lip of the sealing belt is in contact fit with the outer circumferential surface of the bearing, so that invasion of large-particle pollutants can be prevented for the first protection, the longitudinal sealing lip is matched with the annular sealing groove, lubricating grease exists in the groove, and the sealing belt is a second protection, so that the invasion of external fine pollutants and water into the bearing can be prevented.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a commercially available seal belt mounted on a bearing;
FIG. 2 is a cross-sectional view of a sealed bag of the present utility model;
FIG. 3 is a cross-sectional view of the sealing band of the present utility model mounted on a bearing;
In the figure, 100 parts of a bearing, 110 parts of an inner ring, 120 parts of an outer ring, 130 parts of a rolling element;
200. Sealing tape, 210, insertion part, 211, barb, 220, sealing part, 221, transverse sealing lip, 222, longitudinal sealing lip, 223, sealing bulge, 230, step;
300. 400, annular seal groove and annular slot.
Detailed Description
The ordinal numbers, such as "first," "second," etc., used herein to distinguish between the described objects are not intended to imply any order of preference or technical significance. Furthermore, references to "connected" and "coupled" concepts in this disclosure are intended to include both direct connection (coupling) and indirect connection (coupling), unless specifically indicated otherwise.
In interpreting the description of the present application, it is necessary to specify the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., all based on the view angles and layouts shown in the drawings, so as to facilitate the description and simplify the description process, and not to absolutely define the actual orientation, configuration, and operation modes of the device or element. Therefore, these terms should not be construed as limiting the interpretation of this summary.
As shown in fig. 1, a conventional bearing sealing strip design in the market mostly adopts a plane sealing surface, and the sealing effect is realized by tightly fitting the inner ring surface and the outer ring surface of the bearing.
The principles and features of the present utility model are described below in connection with examples, which are set forth only to illustrate the present utility model and not to limit the scope of the utility model.
As shown in fig. 2, a sealing tape 200 includes a sealing tape 200 body, wherein the sealing tape 200 body includes an insertion portion 210 and a sealing portion 220 which are integrally formed, and the sealing portion 220 includes a transverse sealing lip 221 extending along the direction of the insertion portion 210, and at least one longitudinal sealing lip 222 provided at a lower portion of the transverse sealing lip 221.
At least one sealing projection 223 is provided on the sealing surface of the longitudinal sealing lip 222. The lubricating grease in the rollaway nest can be prevented from overflowing and losing.
The insertion portion 210 is provided with barbs 211. The friction force of the contact of the sealing tape 200 with the bearing 100 can be enhanced, and the possibility of the sealing tape 200 falling off can be reduced.
A step 230 is provided between the insertion portion 210 and the sealing portion 220.
The sealing strip 200 is made of nitrile rubber material. The nitrile rubber material has excellent oil resistance, high wear resistance and high heat resistance, and can effectively prolong the normal service life of the sealing belt 200
As shown in fig. 3, a bearing 100 includes an outer ring 120, an inner ring 110, and rolling elements 130 disposed between the outer ring 120 and the inner ring 110, where the outer ring 120 and the inner ring 110 are disposed in a staggered manner along an axial direction, and the sealing bands 200 are disposed above and below a butt joint position of the outer ring 120 and the inner ring 110, respectively.
An annular slot 400 is formed in the upper portion of the outer ring 120 in the radial direction (in the radial direction of the bearing 100), an annular seal groove 300 is formed in the lower portion of the outer ring 120 in the axial direction (in the axial direction of the bearing 100), an annular seal groove 300 is formed in the upper portion of the inner ring 110 in the axial direction, the annular slot 400 is formed in the lower portion of the inner ring 110 in the radial direction, an inserting portion of the sealing band 200 is inserted into the annular slot 400, a longitudinal sealing lip 222 of the sealing band 200 is inserted into the annular seal groove 300, a transverse sealing lip 221 of the sealing band 200 abuts against an outer circumferential surface of the outer ring 120 or the inner ring 110, and a step 230 abuts against an end surface of the outer ring 120 or the inner ring 110.
The transverse sealing lip 221 of the sealing band 200 is in contact fit with the outer circumferential surface of the bearing 100, so that invasion of large-particle pollutants can be prevented for the first protection, the longitudinal sealing lip 222 is matched with the annular sealing groove 300, grease is stored in the groove, and the second protection can prevent external fine pollutants and water from invading the bearing 100.
The sealing part 220 of the sealing belt 200 is designed to ensure that the sealing belt 200 has better sealing performance by adopting a double-lip type sealing design, when the sealing belt 200 is installed on the bearing 100 for use, the sealing belt can provide two paths of protection for the bearing 100, the transverse sealing lip 221 can prevent large particle pollution, the longitudinal sealing lip 222 can prevent invasion of external fine pollutants or water, and meanwhile, internal lubricating grease can be prevented from leaking.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422067591.6U CN222863915U (en) | 2024-08-26 | 2024-08-26 | Sealing band and bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422067591.6U CN222863915U (en) | 2024-08-26 | 2024-08-26 | Sealing band and bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222863915U true CN222863915U (en) | 2025-05-13 |
Family
ID=95612742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422067591.6U Active CN222863915U (en) | 2024-08-26 | 2024-08-26 | Sealing band and bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222863915U (en) |
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2024
- 2024-08-26 CN CN202422067591.6U patent/CN222863915U/en active Active
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