CN114215845A

CN114215845A - Bearing sealing structure

Info

Publication number: CN114215845A
Application number: CN202111600795.6A
Authority: CN
Inventors: 陈庆熙; 赵荣多; 刘双喜; 王冰; 陈太平; 曹一冰; 田文军
Original assignee: Tcb Bearing Manufacturing Co ltd
Current assignee: Tcb Bearing Manufacturing Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-03-22

Abstract

The application provides a bearing seal structure, relates to bearing technical field. The bearing sealing structure comprises a bearing inner ring, an outer ring sleeved on the bearing inner ring and balls arranged between the bearing inner ring and the outer ring, wherein waterproof check rings flexibly attached to the outer end faces of the outer ring are sleeved on the outer peripheral faces of two sides of the inner ring respectively, and waterproof layers with waterproof functions are arranged on the inner side wall faces of the waterproof check rings. Compared with the prior art, this application simple structure, practical convenient is equipped with the waterproof layer that has waterproof function on the waterproof ring inside lateral surface through overlapping respectively on inner circle both sides outer peripheral face with the outer terminal surface flexible laminating of outer lane to improve the waterproof performance of bearing, can be applicable to adverse circumstances such as muddy humidity.

Description

Bearing sealing structure

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of bearings, in particular to a bearing sealing structure.

[ background of the invention ]

The sealing performance of the bearing is an important performance requirement of a waterproof and dustproof bearing, particularly in the field of agricultural machinery, the bearing operating in a muddy water environment has a strict waterproof and dustproof requirement on the sealing performance, and the existing dustproof bearing sealing structure commonly used generally comprises an inner ring, an outer ring, a rolling body, a rubber sealing ring and a check ring. The retaining rings at two ends of the bearing are combined together in an interference fit mode with the outer diameter of the inner ring to form a waterproof sealing structure with the rubber sealing ring, however, in a working environment with muddy water, along with the splashing of the muddy water, the retaining rings are matched with the outer ring and cannot completely block the invasion of the muddy water, the retaining rings are easy to loosen due to the reasons of abrasion and the like, and the waterproof performance is further reduced.

[ summary of the invention ]

An object of the application is to provide a bearing seal structure, can prevent the invasion of muddy water.

The application is realized by the following technical scheme:

the utility model provides a bearing seal structure, includes bearing inner race, the outer lane that the cover was located above that to and locate the ball between the two, on the outer peripheral face of inner race both sides respectively the cover be equipped with the water proof retainer ring of the outer terminal surface flexible laminating of outer lane, be equipped with the waterproof layer that has waterproof function on the water proof retainer ring inside lateral surface.

The bearing sealing structure further comprises a sealing ring arranged between the inner ring and the outer ring.

According to the bearing sealing structure, the outer ring is provided with the sealing groove in which the sealing ring can be embedded.

According to the bearing sealing structure, the sealing ring is a three-lip sealing ring.

According to the bearing sealing structure, the outer peripheral surfaces of two sides of the inner ring are lower than the outer peripheral surface of the middle of the inner ring to form the limiting steps for limiting the installation position of the waterproof retainer ring.

According to the bearing sealing structure, the outer peripheral surfaces of the two sides of the inner ring, which are close to the limiting steps, are respectively provided with the knurled surfaces in interference fit with the inner surface of the waterproof retainer hole.

According to the bearing sealing structure, the width of the end face of the knurled surface is 1-2 mm.

According to the bearing sealing structure, the outer peripheral surface of one side of the inner ring is further provided with the screw hole, and the screw hole is internally provided with the fixing screw matched with the screw hole.

Compared with the prior art, the method has the following advantages: this application simple structure, practical convenient, through the cover respectively on inner circle both sides outer peripheral face be equipped with the waterproof ring of outer lane lateral wall face laminating to be equipped with the waterproof layer that has waterproof function on waterproof ring inside lateral wall face, improve the waterproof performance of bearing, can be applicable to adverse circumstances such as muddy humidity.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a bearing seal structure according to an embodiment of the present application.

Fig. 2 is an enlarged schematic view of a point a in fig. 1 according to an embodiment of the present disclosure.

FIG. 3 is a schematic structural diagram of a bearing inner race according to an embodiment of the present application.

FIG. 4 is a schematic cross-sectional view of an inner race of a bearing according to an embodiment of the present application.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 4, the embodiment of the present application provides a bearing seal structure, including bearing inner ring 1, outer lane 2 that the cover was located on it to and locate ball 3 between the two, on the outer peripheral face of inner ring 1 both sides respectively the cover be equipped with the waterproof retainer ring 4 of outer terminal surface flexible laminating of outer lane 2, be equipped with waterproof layer 41 that has waterproof function on the side wall of waterproof retainer ring 4. Through the cover respectively on the outer peripheral face of inner race both sides be equipped with the waterproof retainer ring with the outer terminal surface flexible laminating of outer lane to be equipped with the waterproof layer that has waterproof function on the waterproof retainer ring inside wall face, improve the waterproof performance of bearing, can be applicable to adverse circumstances such as muddy humidity.

Furthermore, the sealing device also comprises a sealing ring 5 arranged between the inner ring 1 and the outer ring 2. Be equipped with on the outer lane 2 and let the seal groove 21 of sealing washer 5 embedding prevents that sealing washer 5 from droing, specifically, in this application embodiment, sealing washer 5 is the three-lip seal circle, with inner circle 1 forms multiple protective structure with the cooperation of outer lane 2, has dustproof and waterproof function, can adapt to adverse circumstances such as muddy humidity, farming, improves bearing performance.

Furthermore, the outer peripheral surfaces of two sides of the inner ring 1 are lower than the outer peripheral surface of the middle of the inner ring to form a limiting step 11 for limiting the axial installation position of the waterproof retainer ring 4, so that a positioning function is provided, the positioning is more accurate when the retainer ring 2 is installed, and excessive installation is prevented; the positions, close to the limiting steps 11, on the outer peripheral surfaces of the two sides of the inner ring 1 are respectively provided with a knurled surface 12 in interference fit with the surface of the inner hole of the waterproof check ring 4, and the knurled surface and the surface of the inner hole of the check ring 4 are in interference fit, so that the fit between the knurled surface and the inner hole of the check ring is tighter, and the check ring is effectively prevented from loosening. Specifically, the end face width of the knurled surface 12 is 1-2mm, and the knurled surface 12 with different axial widths can be processed according to bearing inner rings and check rings with different dimensions, so that the axial width of the knurled surface 12 is prevented from being too wide or too narrow. In the embodiment of the present application, the axial width of the knurled surface 12 is 1.5 mm.

Furthermore, a screw hole 13 is further formed in the outer peripheral surface of one side of the inner ring 1, a fixing screw 6 matched with the screw hole 13 is arranged in the screw hole 13, and a plurality of oil holes 22 are formed in the outer ring 2.

To better understand the technical solution of the present embodiment, the working principle is as follows:

the utility model provides a bearing seal structure, includes that bearing inner race 1, cover locate its outer lane 2 to and locate ball 3 between the two, on the outer peripheral face of 1 both sides of inner race respectively the cover be equipped with the waterproof retainer ring 4 of the outer terminal surface laminating of outer lane 2, be equipped with waterproof layer 41 that has waterproof function on the side wall of waterproof retainer ring 4. The waterproof retainer ring which is attached to the outer end face of the outer ring is sleeved on the outer peripheral faces of the two sides of the inner ring respectively, and the waterproof layer with the waterproof function is arranged on the inner side wall face of the waterproof retainer ring, so that the waterproof performance of the bearing is improved, and the waterproof retainer ring can be suitable for muddy, moist and other severe environments.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims

1. The utility model provides a bearing seal structure, includes bearing inner race (1), cover and locates outer lane (2) on it to and locate ball (3) between the two, its characterized in that, on the outer peripheral face of inner race (1) both sides respectively the cover be equipped with waterproof retaining ring (4) of the outer terminal surface flexible laminating of outer lane (2), be equipped with waterproof layer (41) that have waterproof function on waterproof retaining ring (4) inside lateral surface.

2. A bearing seal according to claim 1, further comprising a seal ring (5) disposed between the inner ring (1) and the outer ring (2).

3. A bearing seal according to claim 2, characterized in that the outer ring (2) is provided with a seal groove (21) into which the seal ring (5) can be inserted.

4. A bearing seal according to claim 2, characterised in that the sealing ring (5) is a three-lip sealing ring.

5. A bearing seal structure according to claim 1, wherein the outer peripheral surfaces of both sides of the inner ring (1) lower than the outer peripheral surface of the middle thereof form a stopper step (11) for restricting the mounting position of the waterproof grommet (4).

6. A bearing seal structure according to claim 5, characterized in that the outer peripheral surfaces of both sides of the inner ring (1) near the limit steps (11) are respectively provided with knurled surfaces (12) which are in interference fit with the inner surfaces of the holes of the waterproof retainer ring (4).

7. A bearing seal according to claim 6, characterized in that the width of the end face of the knurled surface (12) is 1-2 mm.

8. A bearing seal structure according to claim 1, wherein a screw hole (13) is further provided on the outer peripheral surface of one side of the inner ring (1), and a fixing screw (6) fitted into the screw hole (13) is provided therein.