CN201588874U - Turntable bearing with three rows of cylindrical rollers - Google Patents
Turntable bearing with three rows of cylindrical rollers Download PDFInfo
- Publication number
- CN201588874U CN201588874U CN2009202829150U CN200920282915U CN201588874U CN 201588874 U CN201588874 U CN 201588874U CN 2009202829150 U CN2009202829150 U CN 2009202829150U CN 200920282915 U CN200920282915 U CN 200920282915U CN 201588874 U CN201588874 U CN 201588874U
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- ring
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- rolling element
- mounting hole
- working face
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Abstract
The utility model discloses a turntable bearing with three rows of cylindrical rollers, and the turntable bearing comprises an outer gear ring, two inner rings, three rolling bodies and a retainer. An annular step is arranged on the wall of a through hole of the outer gear ring; a first mounting hole and a second mounting hole are respectively arranged at two ends of the annular step; a first annular operating surface and a second annular operating surface are respectively arranged on two annular end surface of the annular step; a third annular operating surface is arranged on the cylindrical surface hole wall of an inner hole of the annular step; the first rolling body and the third rolling body are respectively installed on the first annular operating surface and the second annular operating surface of the annular step and positioned between the outer gear ring and the first inner ring; the second rolling body is installed on the second annular operating surface of the annular step and positioned between the outer gear ring and the second inner ring; and both the connected positions between the first annular operating surface of the annular step and the cylindrical surface hole wall of the first mounting hole and between the second annular operating surface of the annular step and the cylindrical surface hole wall of the second mounting hole adopt ace transition. The turntable bearing avoids the problem of stress concentration, and the outer gear ring of the bearing is uneasy to break.
Description
Technical field
The utility model relates to a kind of bearing, specifically, relates to a kind of three-row cylinder roller turntable bearing.
Background technique
The three-row cylinder roller turntable bearing can bear bigger thrust load, radial load and tilting moment, be widely used in above mine metallurgy, harbour machinery, lifting transportation, stacker-reclaimer, the shield equipment etc., this bearing has band external tooth, internal tooth or anodontia three kinds of structures, usually boundary dimension is bigger, from internal diameter 400mm to external diameter 6000mm about.
Present bearing is in course of working, and in processing when external toothing lays the hole of rolling element, the bottom comers place in its hole is the right angle or radially tool withdrawal groove is arranged that cutter is blocked disconnected situation when tending to withdrawing occur, has so just reduced manufacturing efficiency.And this kind right angle or have the situation stress of tool withdrawal groove can be more concentrated, the bearing external toothing ruptures easily.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of problem of stress concentration of having eliminated is provided, and the bearing external toothing is the three-row cylinder roller turntable bearing of easy-rupturing not.
The technological scheme that realizes above-mentioned purpose is: a kind of three-row cylinder roller turntable bearing, comprise external toothing, inner ring, rolling element and retainer, and inner ring comprises first inner ring and second inner ring, rolling element comprises first rolling element, second rolling element and the 3rd rolling element; Has ring-shaped step on the through hole hole wall of described external toothing, the two ends of ring-shaped step are respectively first mounting hole and second mounting hole, two annular end faces of ring-shaped step are respectively first annular working face and second annular working face, and the cylndrical surface hole wall of ring-shaped step endoporus is the 3rd annular working face; Described first rolling element and the 3rd rolling element are installed in respectively on first annular working face of ring-shaped step and the 3rd annular working face and between the external toothing and first inner ring; Described second rolling element is installed on second annular working face of ring-shaped step and between the external toothing and second inner ring; Its improvement is: the joint of first annular working face of described ring-shaped step and the cylndrical surface hole wall of first mounting hole, and the joint of the cylndrical surface hole wall of second annular working face of ring-shaped step and second mounting hole is arc transition.
The diameter of described external toothing is greater than 2m, and the arc transition radius R of described joint is 3 ± 0.3mm.The diameter of described external toothing is smaller or equal to 2m, and the arc transition radius R of described joint is 2 ± 0.2mm.
On the cylndrical surface hole wall of second mounting hole of external toothing second seal ring is housed, the endoporus edge of second seal ring and the exterior edge face of second inner ring offset; On the end face that is positioned at the first installation nose end of external toothing the 3rd seal ring is housed, the endoporus edge of the 3rd seal ring and the cylndrical surface periphery wall of first inner ring offset; On the cylndrical surface periphery wall of first inner ring first seal ring is housed, first seal ring is positioned at the outside of the 3rd seal ring.
The beneficial effects of the utility model are: because the joint of the cylndrical surface hole wall of first annular working face of described ring-shaped step and first mounting hole, and the joint of the cylndrical surface hole wall of second annular working face of ring-shaped step and second mounting hole is arc transition, circular arc has toughness, when being subjected to power, deformation slightly, power is disperseed, thereby eliminated problem of stress concentration, the bearing external toothing is easy-rupturing not just also.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is an external toothing schematic representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is done further detailed description.
Shown in Fig. 1～2, a kind of three-row cylinder roller turntable bearing, comprise external toothing 1, inner ring, rolling element and retainer 4, inner ring comprises the first inner ring 2-1 and the second inner ring 2-2, and rolling element comprises the first rolling element 3-1, the second rolling element 3-2 and the 3rd rolling element 3-3; Has ring-shaped step 5 on the through hole hole wall of described external toothing 1, the two ends of ring-shaped step 5 are respectively the first mounting hole 1-1 and the second mounting hole 1-2, two annular end faces of ring-shaped step 5 are respectively the first annular working face 5-1 and the second annular working face 5-2, and the cylndrical surface hole wall of ring-shaped step 5 endoporus is the 3rd annular working face 5-3; Described first rolling element 3-1 and the 3rd rolling element 3-3 are installed in the first annular working face 5-1 of ring-shaped step 5 respectively and the 3rd annular working face 5-3 goes up and between the external toothing 1 and the first inner ring 2-1; The second annular working face 5-2 that the described second rolling element 3-2 is installed in ring-shaped step 5 goes up and between the external toothing 1 and the second inner ring 2-2; The joint of first annular working face 5-1 of described ring-shaped step 5 and the cylndrical surface hole wall 1-1-1 of the first mounting hole 1-1, and the joint of the cylndrical surface hole wall 1-2-1 of the second annular working face 5-2 of ring-shaped step 5 and the second mounting hole 1-2 is arc transition.
When the diameter of described external toothing 1 greater than 2m the time, the arc transition radius R of described joint is 3 ± 0.3mm.When the diameter of described external toothing 1 smaller or equal to 2m the time, the arc transition radius R of described joint is 2 ± 0.2mm.
On the cylndrical surface hole wall 1-2-1 of the second mounting hole 1-2 of external toothing 1 the second seal ring 6-2 is housed, the endoporus edge of the second seal ring 6-2 and the exterior edge face of the second inner ring 2-2 offset; On the end face that is positioned at first mounting hole 1-1 end of external toothing 1 the 3rd seal ring 6-3 is housed, the cylndrical surface periphery wall of the endoporus edge of the 3rd seal ring 6-3 and the first inner ring 2-1 offsets; The first seal ring 6-1 is housed on the cylndrical surface periphery wall of the first inner ring 2-1, and the first seal ring 6-1 is positioned at the outside of the 3rd seal ring 6-3.Described seal ring plays buffering and dustproof and waterproof effect.
The utility model is selected the different arc transition radius R of joint according to the diameter of different external toothing 1 when processing is used.
Claims (4)
1. three-row cylinder roller turntable bearing, comprise external toothing (1), inner ring, rolling element and retainer (4), inner ring comprises first inner ring (2-1) and second inner ring (2-2), and rolling element comprises first rolling element (3-1), second rolling element (3-2) and the 3rd rolling element (3-3); Has ring-shaped step (5) on the through hole hole wall of described gear ring (1), the two ends of ring-shaped step (5) are respectively first mounting hole (1-1) and second mounting hole (1-2), two annular end faces of ring-shaped step (5) are respectively first annular working face (5-1) and second annular working face (5-2), and the cylndrical surface hole wall of ring-shaped step (5) endoporus is the 3rd annular working face (5-3); Described first rolling element (3-1) and the 3rd rolling element (3-3) are installed in first annular working face (5-1) of ring-shaped step (5) and the 3rd annular working face (5-3) respectively and go up and be positioned between external toothing (1) and first inner ring (2-1); Second annular working face (5-2) that described second rolling element (3-2) is installed in ring-shaped step (5) is gone up and is positioned between external toothing (1) and second inner ring (2-2); It is characterized in that: the joint of first annular working face (5-1) of described ring-shaped step (5) and the cylndrical surface hole wall (1-1-1) of first mounting hole (1-1) and second annular working face (5-2) of ring-shaped step (5) are arc transition with the joint of the cylndrical surface hole wall (1-2-1) of second mounting hole (1-2).
2. three-row cylinder roller turntable bearing according to claim 1 is characterized in that: the diameter of described external toothing (1) is greater than 2m, and the arc transition radius R of described joint is 3 ± 0.3mm.
3. three-row cylinder roller turntable bearing according to claim 1 is characterized in that: the diameter of described external toothing (1) is smaller or equal to 2m, and the arc transition radius R of described joint is 2 ± 0.2mm.
4. according to claim 1 or 2 or 3 described three-row cylinder roller turntable bearings, it is characterized in that: on the cylndrical surface hole wall (1-2-1) of second mounting hole (1-2) of external toothing (1) second seal ring (6-2) is housed, the exterior edge face of the endoporus edge of second seal ring (6-2) and second inner ring (2-2) offsets; On the end face that is positioned at first mounting hole (1-1) end of external toothing (1) the 3rd seal ring (6-3) is housed, the cylndrical surface periphery wall of the endoporus edge of the 3rd seal ring (6-3) and first inner ring (2-1) offsets; First seal ring (6-1) is housed on the cylndrical surface periphery wall of first inner ring (2-1), and first seal ring (6-1) is positioned at the outside of the 3rd seal ring (6-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202829150U CN201588874U (en) | 2009-12-22 | 2009-12-22 | Turntable bearing with three rows of cylindrical rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202829150U CN201588874U (en) | 2009-12-22 | 2009-12-22 | Turntable bearing with three rows of cylindrical rollers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588874U true CN201588874U (en) | 2010-09-22 |
Family
ID=42748654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202829150U Expired - Fee Related CN201588874U (en) | 2009-12-22 | 2009-12-22 | Turntable bearing with three rows of cylindrical rollers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588874U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148096A (en) * | 2011-12-06 | 2013-06-12 | 大连国威轴承股份有限公司 | Rotary table bearing used for blast furnace |
| CN103185066A (en) * | 2012-12-11 | 2013-07-03 | 邯郸鸿力轴承有限公司 | Double-sealed turntable bearing |
| CN104061243A (en) * | 2014-06-04 | 2014-09-24 | 安徽省宁国顺昌机械有限公司 | Rotary support of excavator |
| CN106429536A (en) * | 2016-12-05 | 2017-02-22 | 大连华锐重工集团股份有限公司 | Upper lifting device of continuous unshipping machine |
| CN108223565A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without soft band three-row cylinder roller pivoting support bearing |
-
2009
- 2009-12-22 CN CN2009202829150U patent/CN201588874U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148096A (en) * | 2011-12-06 | 2013-06-12 | 大连国威轴承股份有限公司 | Rotary table bearing used for blast furnace |
| CN103185066A (en) * | 2012-12-11 | 2013-07-03 | 邯郸鸿力轴承有限公司 | Double-sealed turntable bearing |
| CN104061243A (en) * | 2014-06-04 | 2014-09-24 | 安徽省宁国顺昌机械有限公司 | Rotary support of excavator |
| CN106429536A (en) * | 2016-12-05 | 2017-02-22 | 大连华锐重工集团股份有限公司 | Upper lifting device of continuous unshipping machine |
| CN108223565A (en) * | 2018-02-05 | 2018-06-29 | 洛阳新强联回转支承股份有限公司 | It is a kind of without soft band three-row cylinder roller pivoting support bearing |
| CN108223565B (en) * | 2018-02-05 | 2024-02-20 | 洛阳新强联回转支承股份有限公司 | Soft-belt-free three-row cylindrical roller slewing bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20121222 |