CN219413291U - Sealing device for inner and outer double combined labyrinth type railway bearing - Google Patents
Sealing device for inner and outer double combined labyrinth type railway bearing Download PDFInfo
- Publication number
- CN219413291U CN219413291U CN202320383424.5U CN202320383424U CN219413291U CN 219413291 U CN219413291 U CN 219413291U CN 202320383424 U CN202320383424 U CN 202320383424U CN 219413291 U CN219413291 U CN 219413291U
- Authority
- CN
- China
- Prior art keywords
- sealing
- bearing
- ring
- flange
- type railway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a sealing device for an inner and outer double combined labyrinth type railway bearing. Through the cooperation of dust cover and sealed cowling, form first labyrinth structure between the two to prevent that external dust, impurity from entering into inside the bearing, through the cooperation of interior sealing ring and outer sealing ring, make between the two form the second labyrinth structure, prevent that lubricating grease from revealing. The bearing has a simple structure, can resist impurities in working environments from entering the bearing, and prevents lubricating grease from leaking, so that the service life of the bearing is prolonged.
Description
Technical Field
The utility model relates to the technical field of bearings, in particular to a sealing device for an inner-outer double combined labyrinth type railway bearing.
Background
In rail wagon equipment, bearing units often play a critical role, and the high reliability of the bearing units ensures safe operation of the wagon equipment. The safety and reliability of the bearing unit is therefore of particular importance.
The working environment of the rail wagon equipment is generally severe, and the bearing of the rail wagon equipment is generally in a shaftless box type, the bearing unit is directly exposed outside, impurities are easy to enter the bearing, so that bearing lubricating grease is polluted, the lubrication state and the working state of the bearing are abnormal, and the service life of the bearing is influenced.
In view of the above, there is a need for a reliable and durable sealing arrangement for a rail wagon bearing unit that resists entry of impurities into the bearing in the working environment.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a sealing device for an inner and outer double combined labyrinth type railway bearing, which can resist impurities in working environment from entering the bearing.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a sealing device for an inner and outer double combined labyrinth type railway bearing, comprising:
the dustproof cover is arranged on the sealing seat and rotates along with the rotation of the shaft, and comprises a first shielding part, a first flange and a second flange, wherein the first shielding part is arranged perpendicular to the axial direction of the shaft, the first flange is arranged on the inner diameter edge of the first shielding part and extends to one side of the bearing, and the second flange is arranged on the outer diameter edge of the first shielding part and extends to one side of the bearing;
a seal cover located between the bearing outer ring and the dust cover, wherein a first connecting part used for being connected to the inner peripheral surface of the bearing outer ring and a first sealing part forming a first labyrinth structure with the first flange and the first shielding part are formed on the seal cover;
an inner seal ring mounted on the seal seat and rotated with rotation of the shaft; and
the outer sealing ring is positioned between the sealing cover and the inner sealing ring, and a second sealing part used for being connected with the first sealing part in a sealing way and a third sealing part penetrating into the inner sealing ring and forming a second labyrinth structure with the inner sealing ring are formed on the outer sealing ring.
Further, the first sealing part comprises a first annular sealing part connected with the first connecting part and parallel to the axial direction and a second shielding part connected with the first annular sealing part and perpendicular to the axial direction, a first gap is formed between the first annular sealing part and the second flange, a second gap is formed between the second shielding part and the first shielding part, and a third gap is formed between the inner diameter edge of the second shielding part and the first flange.
Further, the first connecting portion includes a first connecting flange connected to the inner peripheral surface of the bearing outer ring, and a bent portion provided between the first connecting flange and the first annular seal portion.
Further, the inner sealing ring comprises an inner edge, a bottom edge and an outer edge which form the U-shaped ring shape, a gap is arranged between the bottom edge and the end face of the bearing inner ring, the bottom edge is perpendicular to the axial direction, the length of the inner edge of the inner sealing ring is larger than that of the outer edge of the inner sealing ring, and the inner edge is installed on the shaft through a sealing seat.
Further, a fourth gap is formed between the third sealing part and the U-shaped annular inner sealing ring.
Further, the second sealing portion includes a second annular sealing portion abutting the first annular sealing portion and a third shielding portion abutting the second shielding portion.
Further, a transition part is arranged between the second sealing part and the third sealing part, the transition part is obliquely arranged, a first cavity is formed between the transition part and the second shielding part, and the transition part, the third shielding part and the second annular sealing part are surrounded to form a second cavity.
Further, a fourth flange extending to one side of the bearing is arranged on the transition portion, and the fourth flange is parallel to the second annular sealing portion.
Further, the dust cover and the inner sealing ring are fixedly installed on the shaft through a sealing seat.
Further, the surfaces of the sealing cover and the dust cover are subjected to phosphating treatment.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a sealing device for an inner and outer double combined labyrinth type railway bearing. Through the cooperation of dust cover and sealed cowling, form first labyrinth structure between the two to prevent that external dust, impurity from entering into inside the bearing, through the cooperation of interior sealing ring and outer sealing ring, make between the two form the second labyrinth structure, prevent that lubricating grease from revealing. The bearing has a simple structure, can resist impurities in working environments from entering the bearing, and prevents lubricating grease from leaking, so that the service life of the bearing is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
In the figure: 1. the dust cover, 11, first shielding part, 12, first flange, 13, second flange, 2, seal cover, 21, first connection flange, 22, kink, 23, first annular seal, 24, second shielding part, 3, outer seal ring, 31, second annular seal, 32, third shielding part, 33, third seal, 34, transition part, 35, fourth flange, 4, inner seal ring, 41, inner edge, 42, bottom edge, 43, outer edge, 5, first cavity, 6, second cavity, 7, bearing, 71, bearing outer ring, 72, bearing inner ring, 8, seal seat, 9, shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Examples
As shown in FIG. 1, the sealing device for the inner and outer double combined labyrinth type railway bearing comprises a dust cover 1, a sealing cover 2, an outer sealing ring 3 and an inner sealing ring 4 which are sequentially arranged from outside to inside.
The dust cover 1 is fixedly mounted on the shaft 9 through the sealing seat 8 and rotates along with the rotation of the shaft 9, and the dust cover 1 comprises a first shielding part 11 arranged in the axial direction of the vertical shaft 9, a first flange 12 arranged at the inner diameter edge of the first shielding part 11 and extending to the side of the bearing 7, and a second flange 13 arranged at the outer diameter edge of the first shielding part 11 and extending to the side of the bearing 7. When installed, the first flange 12 is in interference fit with the seal seat 8.
The sealing cover 2 is positioned between the outer ring of the bearing 7 and the dust cover 1, and a first connecting part which is fixedly connected to the inner peripheral surface of the bearing outer ring 71 and a first sealing part which forms a first labyrinth structure with the first flange 12 and the first shielding part 11 are formed on the sealing cover 2; specifically, the first sealing portion includes a first annular sealing portion 23 connected to the first connecting portion and parallel to the axial direction, and a second shielding portion 24 connected to the first annular sealing portion 23 and perpendicular to the axial direction, a first gap is formed between the first annular sealing portion 23 and the second flange 13, a second gap is formed between the second shielding portion 24 and the first shielding portion 11, and a third gap is formed between an inner diameter edge of the second shielding portion 24 and the first flange 12. Wherein the first gap, the second gap, and the third gap are in communication.
The first connecting portion includes a first connecting flange 21 which is interference fit with a mounting groove on an inner peripheral surface of the bearing outer ring 71, and a bent portion 22 which is provided between the first connecting flange 21 and the first annular seal portion 23. The arrangement of the bending part 22 can provide support for the first connecting flange 21, and the sealing cover 2 is more compact in structure, convenient to install and reasonable in structure. When in use, the first labyrinth structure is formed between the dust cover 1 and the sealing cover 2 through the cooperation of the two, so as to form the outer labyrinth sealing structure of the bearing 7, and prevent external dust and impurities from entering the bearing 7.
The inner sealing ring 4 is arranged on the shaft 9 through the sealing seat 8 and rotates along with the rotation of the shaft 9, and is in a U-shaped ring shape with one end open, the open end of the inner sealing ring 4 faces away from the bearing, and the open end of the inner sealing ring 4 faces towards the second shielding part 24; specifically, the inner sealing ring 4 includes an inner edge 41, a bottom edge 42 and an outer edge 43 that form the U-shape ring, a gap is provided between the bottom edge 42 and the end surface of the bearing inner ring 72 in the vertical axial direction, the length of the inner edge 41 of the inner sealing ring is greater than the length of the outer edge 43 of the inner sealing ring, and the inner edge 41 is sealed on the shaft 9. The inner sealing ring 4 of the embodiment is fixedly installed on the shaft 9 through the sealing seat 8, and when the inner sealing ring is installed, the sealing seat 8 is in interference fit with the shaft 9, and the inner sealing ring 4 is in interference fit with the sealing seat 8.
The outer seal ring 3 is located between the seal housing 2 and the inner seal ring 4, and a second seal portion for sealing connection to the first seal portion and a third seal portion 33 penetrating into the inner seal ring 4 and forming a second labyrinth structure with the inner seal ring 4 are formed on the outer seal ring 3. Specifically, a fourth gap is formed between the third seal portion 33 and the inner seal ring 4 having a U-shape.
The second seal portion includes a second annular seal portion 31 that abuts the first annular seal portion 23, and a third shielding portion 32 that abuts the second shielding portion 24. When in use, the inner sealing ring 4 and the outer sealing ring 3 are matched, so that a second labyrinth structure is formed between the inner sealing ring 4 and the outer sealing ring, and the inner labyrinth sealing structure of the bearing 7 is formed, so that lubricating grease is prevented from leaking.
A transition portion 34 is disposed between the second sealing portion and the third sealing portion 33 in this embodiment, specifically, the third shielding portion 32 is connected to the third sealing portion 33 through the transition portion 34, the transition portion 34 is obliquely disposed, a first cavity 5 is formed between the transition portion 34 and the second shielding portion 24, and the first cavity 5 is communicated with the first gap, the second gap and the third gap.
The transition 34 encloses the second cavity 6 with the third shielding portion 32 and the second annular seal 31. When the novel labyrinth seal is used, when a small amount of external impurities break through the first labyrinth structure, dust impurities are stored in the first cavity 5, so that the dust impurities are prevented from entering the inner labyrinth seal; when grease in the bearing 7 is redistributed due to rotation of the bearing 7, the extruded grease can be stored in the second cavity 6, and leakage of the internal grease is prevented.
In order to increase the storage capacity of the second cavity 6 and prevent leakage of the grease, the transition portion 34 is provided with a fourth flange 35 extending to one side of the bearing 7, and the fourth flange 35 is parallel to the second annular sealing portion 31, which is beneficial to oil storage of the second cavity 6 and prevents leakage of the grease.
The surface of the sealing cover 2 and the surface of the dust cover 1 are subjected to phosphating treatment to form a phosphating layer, so that the sealing device can be prevented from being corroded by rain and fog in the use process, and the service life of the sealing device is effectively prolonged.
The dust cover 1 and the seal cover 2 of the present embodiment are made of metal, and the inner seal ring 4 and the outer seal ring 3 are made of rubber.
It should be noted that the detailed portions of the present utility model are not described in the prior art.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In the description of the present utility model, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (9)
1. A sealing device for an inner and outer double combined labyrinth type railway bearing is characterized in that: comprising the following steps:
the dustproof cover is arranged on the shaft through the sealing seat and rotates along with the rotation of the shaft, and comprises a first shielding part, a first flange and a second flange, wherein the first shielding part is perpendicular to the axial direction of the shaft, the first flange is arranged on the inner diameter edge of the first shielding part and extends to one side of the bearing, and the second flange is arranged on the outer diameter edge of the first shielding part and extends to one side of the bearing;
a seal cover located between the bearing outer ring and the dust cover, wherein a first connecting part used for being connected to the inner peripheral surface of the bearing outer ring and a first sealing part forming a first labyrinth structure with the first flange and the first shielding part are formed on the seal cover;
the inner sealing ring is arranged on the shaft through a sealing seat, rotates along with the rotation of the shaft and is in a U-shaped ring shape with one end open; and
the outer sealing ring is positioned between the sealing cover and the inner sealing ring, and a second sealing part used for being connected with the first sealing part in a sealing way and a third sealing part penetrating into the inner sealing ring and forming a second labyrinth structure with the inner sealing ring are formed on the outer sealing ring.
2. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 1, wherein: the first sealing part comprises a first annular sealing part connected with the first connecting part and parallel to the axial direction and a second shielding part connected with the first annular sealing part and perpendicular to the axial direction, a first gap is formed between the first annular sealing part and the second flange, a second gap is formed between the second shielding part and the first shielding part, and a third gap is formed between the inner diameter edge of the second shielding part and the first flange.
3. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 2, wherein: the first connecting part comprises a first connecting flange connected with the inner peripheral surface of the bearing outer ring and a bending part arranged between the first connecting flange and the first annular sealing part.
4. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 1, wherein: the inner sealing ring comprises an inner edge, a bottom edge and an outer edge which form the U-shaped ring shape, a gap is arranged between the bottom edge and the end face of the bearing inner ring, the bottom edge is perpendicular to the axial direction, the length of the inner edge of the inner sealing ring is larger than the length of the outer edge of the inner sealing ring, and the inner edge is sealed on the shaft.
5. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 1, wherein: and a fourth gap is formed between the third sealing part and the U-shaped annular inner sealing ring.
6. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 2, wherein: the second sealing part comprises a second annular sealing part which is abutted with the first annular sealing part, and a third shielding part which is abutted with the second shielding part.
7. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 6, wherein: the transition part is arranged between the second sealing part and the third sealing part, the transition part is obliquely arranged, a first cavity is formed between the transition part and the second shielding part, and the transition part, the third shielding part and the second annular sealing part are surrounded to form a second cavity.
8. The sealing device for an inner and outer double combined labyrinth type railway bearing according to claim 7, wherein: and a fourth flange extending to one side of the bearing is arranged on the transition part, and the fourth flange is parallel to the second annular sealing part.
9. The sealing device for an inner and outer double combined labyrinth type railway bearing according to any one of claims 1 to 8, characterized in that: the dust cover and the inner sealing ring are fixedly installed on the shaft through a sealing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320383424.5U CN219413291U (en) | 2023-03-03 | 2023-03-03 | Sealing device for inner and outer double combined labyrinth type railway bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320383424.5U CN219413291U (en) | 2023-03-03 | 2023-03-03 | Sealing device for inner and outer double combined labyrinth type railway bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219413291U true CN219413291U (en) | 2023-07-25 |
Family
ID=87203958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320383424.5U Active CN219413291U (en) | 2023-03-03 | 2023-03-03 | Sealing device for inner and outer double combined labyrinth type railway bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219413291U (en) |
-
2023
- 2023-03-03 CN CN202320383424.5U patent/CN219413291U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214699121U (en) | Shaft end sealing device of gear box, gear box and rail vehicle | |
| JP2002369474A (en) | Rolling bearing equipment for retaining impeller shaft | |
| CN207999446U (en) | A kind of sealing structure of double outside framework oil seals | |
| CN219413291U (en) | Sealing device for inner and outer double combined labyrinth type railway bearing | |
| CN116292641A (en) | Sealing device for inner and outer double combined labyrinth type railway bearing | |
| CN219605856U (en) | Sealing device for light-contact double-combined labyrinth type railway bearing | |
| CN210344056U (en) | Thrust damping bearing | |
| CN116576197A (en) | Sealing device for light-contact double-combined labyrinth type railway bearing | |
| CN209990780U (en) | Tapered roller bearing with seal structure | |
| CN112855761A (en) | Crossed roller bearing with toothed inner ring | |
| JPS59164436A (en) | Assembly of bevel gear | |
| CN216200509U (en) | Oil seal and drive axle oil seal structure | |
| CN219605854U (en) | High-pressure sealing waterproof and anti-corrosion turntable bearing | |
| CN212177857U (en) | Hub unit with four-lip sealing structure | |
| CN212672370U (en) | Mileage sensor installation component, reduction gear assembly and vehicle | |
| CN220204423U (en) | Four-point contact ball type slewing bearing with sealing structure | |
| CN219062388U (en) | Sealing structure of gear box and gear box | |
| CN217129770U (en) | Bracket device with temperature measurement hole | |
| CN216589607U (en) | Sliding bearing assembly device | |
| CN214331428U (en) | Sealing assembly and gear box | |
| CN218564185U (en) | Radial ball bearing assembly with different contact angles of inner and outer rings | |
| CN211082585U (en) | Sealed roller bearing and backing roll supporting mechanism of rolling mill thereof | |
| CN211599532U (en) | Oil seal and sealing structure | |
| CN219865888U (en) | Dustproof corrosion-resistant plane thrust bearing | |
| CN215908352U (en) | Dust-proof device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |