CN207975257U - A kind of bearing seal structure - Google Patents

Abstract

The utility model is related to a kind of bearing seal structures, including bearing gland, bearing, bearing body, axis, labyrinth seal ring and gear oil jacket；Bearing body and gear oil jacket are set on axis, and bearing gland is sleeved on gear oil jacket and is combined and internal formation bearing bore with bearing body, and bearing is installed in bearing bore；It is outer and fixed with axis that one end of gear oil jacket is located at bearing bore, the inner circle of the outer circle and bearing gland of keeping off oil jacket be engaged and between labyrinth seal ring is set, the other end for keeping off oil jacket is located at that bearing bore is interior and the cricoid oil retaining part of formation；Annular convex platform is formed on the inner side end of the composition bearing bore of bearing gland, the side of annular convex platform circumferentially offers annular groove.The utility model is improved existing parts of bearings structure, changes the lubricating oil sealing structure in parts of bearings, total sealing and good dustproof effect.

Description

A bearing sealing structure

technical field

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

Background technique

The existing structure is composed of the following main components: 1. Dustproof parts, 2. Bearing glands, 3. Bearings, 4. Bearing bodies, 5. Shafts, 6. Labyrinth seal rings. The dustproof part 1 is set on the shaft 5, and the outer circle cooperates with the inner circle of the bearing gland 2 to form a labyrinth sealing ring 6, which can block foreign dust and other impurities outside the bearing cavity. Bearing 3 and bearing gland 2 are cooperatingly installed in bearing body 4 to form a bearing cavity. There is lubricating oil in the cavity to lubricate and cool the working bearing 3. The labyrinth seal ring 6 also plays a role in preventing the leakage of lubricating oil. The existing structure has the following disadvantages: easy to leak, there is a certain gap between the labyrinth seal ring 6 and the dustproof part 1, part of the splashed lubricating oil in the bearing cavity will pass through the labyrinth seal ring 6, leak to the outside, and pollute the working environment .

Utility model content

The utility model aims at the above problems and provides a bearing sealing structure.

The purpose of this utility model can be achieved through the following technical solutions: a bearing sealing structure, including a bearing gland, a bearing, a bearing body, a shaft, a labyrinth seal ring and an oil retaining sleeve; the bearing body and the oil retaining sleeve are respectively set On the shaft, the bearing gland is set on the oil retaining sleeve, and the bearing gland is combined with the bearing body to form a bearing cavity inside, the bearing is sleeved on the shaft and installed in the bearing cavity; one end of the oil retaining sleeve is located in the bearing cavity The outer circle of the oil deflecting sleeve is connected and fixed to the shaft by radially arranged screws. The outer circle of the oil retaining sleeve and the inner circle of the bearing gland are in contact with each other, and a labyrinth seal ring is arranged between them. The other end of the oil retaining sleeve is located in the bearing cavity, and the oil retaining sleeve The outer circle of the other end extends to the peripheral side and the end is bent to form a ring-shaped oil deflecting part; the inner end surface of the bearing gland forming the bearing cavity forms an annular boss, which corresponds to the other end of the oil retaining sleeve In the space formed between the outer circle and the oil retaining part, an annular groove is opened on the peripheral side of the annular boss along the circumferential direction.

Further, the outer circle of the oil deflecting sleeve and/or the inner circle of the bearing cover are provided with grooves corresponding to the labyrinth seal rings.

Further, it also includes a dust-proof piece, the dust-proof piece is set on the oil deflecting sleeve and is located outside the bearing cavity, and the inner circle of one end of the dust-proof piece is inserted into the groove provided by the outer circle of one end of the oil-deflecting sleeve, preventing The other end of the dust part is against the outer end surface of the bearing gland.

Compared with the prior art, the utility model has the advantages that a part of the lubricating oil in the bearing cavity is blocked by the other end face of the oil retaining sleeve and directly flows back into the bearing cavity; a part of the lubricating oil passes through the oil retaining part formed by the other end of the oil retaining sleeve Guided to the annular groove on the inner annular boss of the bearing gland, it flows back into the bearing chamber along the annular groove without leakage; the labyrinth sealing ring prevents lubricating oil from leaking; the dust-proof part blocks external dust and other impurities. The sealing and dustproof effect of the whole bearing structure is good.

Description of drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a structural schematic diagram of the utility model.

The markings in the figure are as follows:

1. Dust-proof parts, 2. Bearing gland, 3. Bearing, 4. Bearing body, 5. Shaft, 6. Labyrinth seal ring, 7. Oil retaining sleeve, A, oil retaining part, B, ring groove.

Detailed ways

The specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the utility model. Although the invention has been described in conjunction with preferred specific embodiments thereof, these embodiments are illustrative only and do not limit the scope of the invention.

Referring to Fig. 2, a bearing sealing structure includes a bearing gland 2, a bearing 3, a bearing body 4, a shaft 5, a labyrinth seal ring 6 and an oil retaining sleeve 7, and the bearing body 4 and the oil retaining sleeve 7 are respectively set on the shaft 5, the bearing gland 2 is set on the oil retaining sleeve 7, and the bearing gland 2 is combined with the bearing body 4 to form a bearing cavity inside, the bearing 3 is set on the shaft 5 and installed in the bearing cavity, and the bearing cavity is lubricated The oil lubricates and cools the working bearing 3; one end of the oil retaining sleeve 7 is located outside the bearing cavity and is connected and fixed with the shaft 5 through radially arranged screws, and the outer circle of the oil retaining sleeve 7 and the bearing gland 2 The inner circles are in contact with each other and a labyrinth seal ring 6 is arranged between them. The outer circle of the oil retaining sleeve 7 and/or the inner circle of the bearing gland 2 are provided with grooves corresponding to the labyrinth seal ring 6. The other end of the oil retaining sleeve 7 Located in the bearing cavity, the outer circle of the other end of the oil deflecting sleeve 7 extends to the peripheral side and the end is bent to form an annular oil deflecting part A; the inner end surface of the bearing gland 2 constituting the bearing cavity forms an annular boss , the annular boss corresponds to the space formed between the outer circle of the other end of the oil deflector sleeve 7 and the oil deflector A, and the circumferential side of the annular boss is provided with an annular groove B along the circumferential direction.

In a specific implementation, it also includes a dust-proof piece 1, the dust-proof piece 1 is set on the oil deflector 7 and is located outside the bearing cavity, and the inner circle of one end of the dust-proof piece 1 is embedded in the outer circle of one end of the oil-deflector 7 In the opened groove, the other end of the dust-proof component 1 abuts against the outer end face of the bearing gland 2 .

The utility model splits the dustproof part 1 among the original Fig. 1 into the dustproof part 1 and the oil retaining sleeve 7 of the utility model. During operation, a part of the lubricating oil in the bearing cavity is blocked by the other end face of the oil retaining sleeve 7 and directly flows back into the bearing cavity; a part of the lubricating oil is guided to the inner end face of the bearing gland 2 through the oil retaining portion A formed at the other end of the oil retaining sleeve 7 The annular groove B on the annular boss flows back into the bearing chamber along the annular groove B without leakage; the labyrinth seal ring 6 effectively prevents lubricating oil from leaking; the dustproof part 1 blocks foreign dust and other impurities.

It should be pointed out that for the utility model that has been fully described, there may also be various changes and modified implementations, and it is not limited to the specific examples of the above-mentioned implementation modes. The above-mentioned embodiments are only used as illustrations of the present utility model, rather than limitation of the present utility model. In a word, the protection scope of the present utility model shall include those changes or substitutions and modifications obvious to those skilled in the art, and the appended claims shall prevail.

Claims (3)

1. A bearing seal structure, characterized in that it comprises a bearing gland, a bearing, a bearing body, a shaft, a labyrinth seal ring and an oil retaining sleeve; the bearing body and the oil retaining sleeve are respectively set on the shaft, and the bearing gland is set On the oil deflecting sleeve, and the bearing gland is combined with the bearing body to form a bearing cavity inside, the bearing is sleeved on the shaft and installed in the bearing cavity; one end of the oil deflecting sleeve is located outside the bearing cavity and passed through radially arranged screws It is connected and fixed with the shaft, the outer circle of the oil retaining sleeve and the inner circle of the bearing gland are in contact with each other and a labyrinth seal ring is arranged between them, the other end of the oil retaining sleeve is located in the bearing cavity, and the other end of the oil retaining sleeve is outside the circle to the peripheral side Extend and bend the end to form a ring-shaped oil retaining part; the inner end surface of the bearing gland forming the bearing cavity forms an annular boss, and the annular boss corresponds to the space between the outer circle of the other end of the oil retaining sleeve and the oil retaining part In the formed space, an annular groove is formed on the circumferential side of the annular boss along the circumferential direction. 2 . The bearing sealing structure according to claim 1 , wherein grooves corresponding to labyrinth seal rings are formed on the outer circle of the oil deflector sleeve and/or the inner circle of the bearing gland. 3 . 3. The bearing sealing structure according to claim 1 or 2, characterized in that it also includes a dust-proof piece, the dust-proof piece is set on the oil deflector sleeve and is located outside the bearing cavity, and one end of the dust-proof piece is embedded in the inner circle In the groove formed on the outer circle of one end of the oil deflecting sleeve, the other end of the dust-proof member is against the outer end surface of the bearing gland.