CN211715536U - Three-row column type slewing bearing with labyrinth seal structure - Google Patents
Three-row column type slewing bearing with labyrinth seal structure Download PDFInfo
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- CN211715536U CN211715536U CN202020411590.8U CN202020411590U CN211715536U CN 211715536 U CN211715536 U CN 211715536U CN 202020411590 U CN202020411590 U CN 202020411590U CN 211715536 U CN211715536 U CN 211715536U
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Abstract
The utility model discloses a three-row column slewing bearing with labyrinth seal structure, which comprises an outer ring, an inner upper ring, an inner lower ring, an upper row of rollers, a lower row of rollers and radial rollers, wherein an upper horizontal raceway and a radial raceway are arranged between the inner upper ring and the outer ring, and a lower horizontal raceway is arranged between the inner lower ring and the outer ring; the upper row of rollers, the radial rollers and the lower row of rollers are respectively arranged in the upper horizontal raceway, the radial raceway and the lower horizontal raceway; a labyrinth seal structure and an elastic seal ring are arranged between the inner upper ring and the outer ring; the labyrinth seal structure is composed of a sawtooth structure with taper arranged on the periphery of the inner upper ring and a groove structure with taper arranged on the outer ring. The utility model discloses a three-row column formula slewing bearing can bear great axial load, radial load and overturning moment, can realize high performance sealing again to ensure the long-time steady operation of slewing bearing.
Description
Technical Field
The utility model belongs to the technical field of slewing bearing, mainly relate to a slewing bearing with labyrinth seal structure.
Background
In recent years, with the continuous development of the engineering machinery industry, more requirements are put on the design of the slewing bearing. The existing three-row column type slewing bearing specified in the JB/T2300-2011 standard meets the requirement of large bearing capacity. However, in the occasion with high sealing requirement, the common three-row column type sealing structure can not meet the use requirement. The utility model provides a three-row column type slewing bearing of multiple seal can not only bear great axial load, radial load and the moment of overturning, has adopted the labyrinth seal structure that sealing performance is good moreover, simple structure, and sealing performance is good.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a can bear great axial load, radial load and overturning moment, can realize high leakproofness's slewing bearing again.
The utility model discloses a concrete technical scheme does: a three-row column type slewing bearing with a labyrinth seal structure comprises an outer ring, an inner upper ring, an inner lower ring, an upper row of rollers, a lower row of rollers and radial rollers, wherein an upper horizontal raceway and a radial raceway are arranged between the inner upper ring and the outer ring, and a lower horizontal raceway is arranged between the inner lower ring and the outer ring; the upper row of rollers, the radial rollers and the lower row of rollers are respectively arranged in the upper horizontal raceway, the radial raceway and the lower horizontal raceway; a labyrinth seal structure and an elastic seal ring are arranged between the inner upper ring and the outer ring.
Further, the outer ring is provided with a step for mounting the elastic sealing ring.
Furthermore, the labyrinth seal structure is composed of a sawtooth structure with taper arranged on the periphery of the inner upper ring and a groove structure with taper arranged on the outer ring.
Furthermore, the taper angle of the sawtooth structure on the inner upper ring is slightly smaller than that of the groove structure on the outer ring, so that better labyrinth seal matching is realized.
Compared with the prior art, the utility model has the advantages that:
the utility model discloses a three-row column formula slewing bearing with labyrinth seal structure, simple structure, convenient to use has labyrinth seal structure, can bear great axial load, radial load and the moment of toppling, can realize high performance again and seal to ensure the long-time steady operation of slewing bearing.
Drawings
FIG. 1 is a sealing structure of a three-row column type slewing bearing in the prior art;
FIG. 2 is a structural diagram of a three-row column type slewing bearing with a labyrinth sealing structure of the present invention;
fig. 3 is a partially enlarged schematic view of the labyrinth seal structure of the present invention;
in the figure: 1-outer ring, 2-inner upper ring, 3-inner lower ring, 4-upper row roller, 5-radial roller, 6-lower row roller and 7-elastic sealing ring.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
As shown in fig. 2, a three-row cylindrical slewing bearing with a labyrinth seal structure comprises an outer ring 1, an inner upper ring 2, an inner lower ring 3, an upper row of rollers 4, a lower row of rollers 6 and radial rollers 5, wherein an upper horizontal raceway and a radial raceway are arranged between the inner upper ring 2 and the outer ring 1, and a lower horizontal raceway is arranged between the inner lower ring 3 and the outer ring 1; the upper row of rollers 4, the radial rollers 5 and the lower row of rollers 6 are respectively arranged in the upper horizontal raceway, the radial raceway and the lower horizontal raceway; a labyrinth seal structure and an elastic seal ring are arranged between the inner upper ring 2 and the outer ring 1.
The periphery of the inner upper ring 2 is provided with a sawtooth structure with taper, the outer ring 1 is provided with a groove structure with taper, and the sawtooth structure and the groove structure jointly form a labyrinth seal structure. The sawtooth structure is mutually matched with the groove structure, and the sawtooth structure can go deep into the groove structure.
Meanwhile, the outer ring 1 is provided with steps for mounting the elastic sealing ring 7, and the elastic sealing ring 7 can enable the sealing performance of the inner ring and the outer ring to be better.
In this embodiment, the taper angle of the sawtooth structure of the inner upper ring 2 is slightly smaller than that of the groove structure of the outer ring 1, so that labyrinth seal matching is better realized.
In this embodiment, through the above-mentioned sealing structure, in cooperation with the elastic sealing ring 7, the influence of gravity on the inner upper ring is compensated, and simultaneously, the dustproof sealing under the severe conditions of the three-row column type slewing bearing is realized, so that the daily service life of the three-row column type slewing bearing is indirectly prolonged.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (3)
1. A three-row column type slewing bearing with a labyrinth seal structure is characterized by comprising an outer ring (1), an inner upper ring (2), an inner lower ring (3), an upper row of rollers (4), a lower row of rollers (6) and radial rollers (5), wherein an upper horizontal raceway and a radial raceway are arranged between the inner upper ring (2) and the outer ring (1), and a lower horizontal raceway is arranged between the inner lower ring (3) and the outer ring (1); the upper row of rollers (4), the radial rollers (5) and the lower row of rollers (6) are respectively arranged in the upper horizontal raceway, the radial raceway and the lower horizontal raceway; a labyrinth seal structure and an elastic seal ring (7) are arranged between the inner upper ring (2) and the outer ring (1); the labyrinth seal structure is formed by a sawtooth structure with taper arranged on the periphery of the inner upper ring (2) and a groove structure with taper arranged on the outer ring (1).
2. A three-row-column slewing bearing with labyrinth seal according to claim 1, characterized in that the outer ring (1) is provided with a step for mounting an elastic sealing ring (7).
3. The three-row cylindrical slewing bearing with the labyrinth structure as claimed in claim 1, wherein the taper angle of the sawtooth structure on the inner upper ring (2) is slightly smaller than that of the groove structure on the outer ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411590.8U CN211715536U (en) | 2020-03-27 | 2020-03-27 | Three-row column type slewing bearing with labyrinth seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411590.8U CN211715536U (en) | 2020-03-27 | 2020-03-27 | Three-row column type slewing bearing with labyrinth seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715536U true CN211715536U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020411590.8U Active CN211715536U (en) | 2020-03-27 | 2020-03-27 | Three-row column type slewing bearing with labyrinth seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN211715536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062920A (en) * | 2021-04-20 | 2021-07-02 | 马鞍山方圆精密机械有限公司 | Center-adjusting type slewing bearing for heavy load |
-
2020
- 2020-03-27 CN CN202020411590.8U patent/CN211715536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062920A (en) * | 2021-04-20 | 2021-07-02 | 马鞍山方圆精密机械有限公司 | Center-adjusting type slewing bearing for heavy load |
| CN113062920B (en) * | 2021-04-20 | 2024-05-10 | 马鞍山方圆精密机械有限公司 | Pivoting support for aligning heavy load |
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