Sealing ring with compensation for bearing

Abstract

According to the sealing ring with the compensation function of the bearing, the sealing ring is an elastic ring body, the elastic ring body is hollow, an oil inlet is formed in the side face of the elastic ring body, and oil with pressure is injected into a hollow cavity of the elastic ring body through the oil inlet; an oil supplementing pipe is fixedly arranged at the oil inlet of the elastic ring body, one end of the oil supplementing pipe is integrally connected with a sealing ring body, and the sealing ring body of the oil supplementing pipe is located in the hollow cavity of the sealing ring and attached to the inner wall of the oil inlet of the elastic ring body. According to the sealing ring with the compensation function, the elastic ring body expands under the oil pressure of the oil with the pressure, efficient sealing between the bearing inner ring and the bearing annular shell plate can be achieved, and after the sealing ring with the compensation function is abraded, the oil with the pressure can be supplemented into the hollow cavity of the elastic ring body; the oil pressure is increased, so that the elastic ring body expands again to be tightly attached to the annular shell plate of the bearing to achieve efficient sealing again, normal abrasion of the sealing ring can be effectively compensated through pressure control over the hollow cavity of the elastic ring body, and the replacement frequency of a sealing piece is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of sealing elements, and in particular relates to a compensating sealing ring of a bearing. Background Art

[0002] The bearing seal ring is a key mechanical component, and its main function is to prevent the lubricant inside the bearing from leaking and to prevent external dust, moisture and other foreign matter from entering the bearing. Existing bearing seal rings will wear out and produce gaps after long-term use, reducing the sealing effect. If they are not replaced, lubricant leakage will occur in the long run. Utility Model Content

[0003] Based on the content in the background technology, the utility model provides a compensating sealing ring for a bearing, which can effectively compensate for the normal wear of the sealing ring and reduce the number of replacement times of the sealing member.

[0004] A compensating sealing ring for a bearing is provided, wherein the sealing ring is an elastic ring body, the elastic ring body is hollow, an oil inlet is provided on the side of the elastic ring body, and pressurized oil is injected into the hollow cavity of the elastic ring body through the oil inlet; the elastic ring body is specifically made of rubber material, and when the compensating sealing ring is arranged in an annular groove at the edge of the end face of the inner ring of the bearing, the elastic ring body expands under the oil pressure of the pressurized oil, thereby realizing efficient sealing between the inner ring of the bearing and the annular shell plate of the bearing; when the compensating sealing ring is worn out during normal use, pressurized oil can be supplemented into the hollow cavity of the elastic ring body through the oil inlet, thereby increasing the oil pressure so that the elastic ring body expands again and fits tightly with the annular shell plate of the bearing to realize efficient sealing again.

[0005] Preferably, an oil replenishing pipe is fixedly provided at the oil inlet of the elastic ring body, one end of the oil replenishing pipe is integrally connected with a sealing ring body, the sealing ring body of the oil replenishing pipe is located in the hollow cavity of the sealing ring and fits with the inner wall of the oil inlet of the elastic ring body; the setting of the oil replenishing pipe makes it easier to replenish the pressurized oil into the hollow cavity of the elastic ring body, and the setting of the sealing ring body of the oil replenishing pipe can also fit tightly with the inner wall of the oil inlet of the elastic ring body under the oil pressure of the pressurized oil, thereby avoiding leakage of the pressurized oil at this point.

[0006] Preferably, the outer surface of the other end of the oil supply pipe is provided with a thread, and after the oil supply pipe with the compensating sealing ring passes through the retaining ring provided on the end face of the bearing, it can be locked and fixed by a nut through the thread thereon.

[0007] Through the above technical solution, the utility model at least includes the following beneficial effects:

[0008] The compensating sealing ring of the bearing described in the present application has an elastic ring body that expands under the oil pressure of pressurized oil, and can achieve efficient sealing between the inner ring of the bearing and the annular shell plate of the bearing. When the compensating sealing ring is worn out during normal use, pressurized oil can be added to the hollow cavity of the elastic ring body to increase the oil pressure so that the elastic ring body expands again and fits tightly with the annular shell plate of the bearing to achieve efficient sealing again. The normal wear of the sealing ring can be effectively compensated by controlling the pressure of the hollow cavity in the elastic ring body, reducing the number of replacement times of the seal and effectively saving operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure in which a compensating seal ring is arranged on a bearing in an embodiment of the present application (a partial cross-sectional view); DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention.

[0011] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship are only used for exemplary description and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0012] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0013] refer to Figure 1A compensating sealing ring for a bearing, wherein the sealing ring is an elastic ring body 9, which is hollow and has an oil inlet on the side of the elastic ring body 9, through which pressurized oil is injected into a hollow cavity 10 of the elastic ring body 9; the elastic ring body 9 is specifically made of rubber; when the compensating sealing ring is arranged in an annular groove at the edge of the end face of the bearing inner ring 2, the elastic ring body 9 expands under the oil pressure of the pressurized oil, thereby achieving efficient sealing between the bearing inner ring 2 and the bearing annular shell plate 17; when the compensating sealing ring is worn out during normal use, pressurized oil can be added to the hollow cavity 10 of the elastic ring body 9 through the oil inlet, thereby increasing the oil pressure so that the elastic ring body 9 expands again and fits tightly with the annular shell plate 17 of the bearing to achieve efficient sealing again.

[0014] An oil replenishing pipe 11 is fixedly arranged at the oil inlet of the elastic ring body 9, and one end of the oil replenishing pipe 11 is integrally connected with a sealing ring body 12. The sealing ring body 12 of the oil replenishing pipe 11 is located in the hollow cavity 10 of the sealing ring and fits with the inner wall of the oil inlet of the elastic ring body 9; the setting of the oil replenishing pipe 11 makes it easier to replenish the pressurized oil into the hollow cavity 10 of the elastic ring body 9, and the setting of the sealing ring body 12 of the oil replenishing pipe can also fit tightly with the inner wall of the oil inlet of the elastic ring body 9 under the oil pressure of the pressurized oil, thereby avoiding leakage of the pressurized oil at this point.

[0015] The other end of the oil supply pipe 11 is provided with a thread 13 on its outer surface. After the oil supply pipe 11 with the compensating sealing ring passes through the retaining ring 15 provided on the end face of the bearing, it can be locked and fixed by a nut 14 through the thread 13 thereon.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of ​​the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compensating seal ring for a bearing, characterized in that: The sealing ring is an elastic ring body (9), which is hollow. An oil inlet is provided on the side of the elastic ring body (9), and pressurized oil is injected into the hollow cavity (10) of the elastic ring body (9) through the oil inlet.

2. A bearing with a compensating seal ring according to claim 1, characterized in that: An oil replenishing pipe (11) is fixedly arranged at the oil inlet of the elastic ring body (9), one end of the oil replenishing pipe (11) is integrally connected with a sealing ring body (12), and the sealing ring body (12) of the oil replenishing pipe (11) is located in the hollow cavity (10) of the sealing ring and fits with the inner wall of the elastic ring body (9) at the oil inlet.

3. A bearing with compensating sealing ring according to claim 2, characterized in that: The outer surface of the other end of the oil replenishing pipe (11) is provided with a thread (13).

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