CN104196879A - Three-row cylindrical roller combined turntable bearing of splitting structure - Google Patents
Three-row cylindrical roller combined turntable bearing of splitting structure Download PDFInfo
- Publication number
- CN104196879A CN104196879A CN201410416326.2A CN201410416326A CN104196879A CN 104196879 A CN104196879 A CN 104196879A CN 201410416326 A CN201410416326 A CN 201410416326A CN 104196879 A CN104196879 A CN 104196879A
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- China
- Prior art keywords
- subdivision
- inner ring
- combination
- otch
- sections
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 4
- 238000005242 forging Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/381—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with at least one row for radial load in combination with at least one row for axial load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of bearing manufacturing and discloses a three-row cylindrical roller combined turntable bearing of a splitting structure. The combined turntable bearing comprises a combined outer ring (1), a first combined inner ring (2) and a second combined inner ring (3), which are of combined structures formed by lap joint of multiple split sectional steps; the amount of the split sections of the first inner ring is the same with that of the split sections of the second inner ring and is co-prime with that of the split sections of the outer ring; and included angles are formed between the split notch of the combined outer ring and the bus of a main thrust roller, between the split notch of the first combined inner ring and the bus of the main thrust roller, the split notch of the combined outer ring and the bus of an auxiliary thrust roller and between the split notch of the second combined inner ring and the bus of the auxiliary thrust roller. According to the three-row cylindrical roller combined turntable bearing of the splitting structure, the goals that bearing forging pieces can be cast in sections and bearing products can be put in a container for transportation in sections and assembled after arriving at a field are realized and the continuously developed use requirement of bearing load is met.
Description
Technical field
The invention belongs to bearing manufacturing technology field, relate generally to a kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure.
Background technique
Bearing capacity and the boundary dimension of holder for three-row cylindrical roller combination turntable bearing have much relations, the bearing that adopts same material to manufacture, and diameter, axial dimension are larger, and bearing capacity is stronger.The holder for three-row cylindrical roller combination turntable bearing of general external diameter 5m, can bear axial force is 4000kN, the load that tilting moment is 50000kNm.Along with the progress of engineering, the work loadss such as ship's crane are increasing, and existing axial force is 32000kN at present, the load demand that tilting moment is 500000kNm, calculating shows to need holder for three-row cylindrical roller combination turntable bearing more than external diameter 10m, could meet this operating mode.
Holder for three-row cylindrical roller combination turntable bearing more than 10m, exists the very big difficulty of processing and transport: the first size of forging and weight super large, exceeds the working ability of current forging equipment; Secondly, the Bearing Manufacturing Enterprise in inland, keep away the mode of unavoidable employing highway transport and transport bearing forging and finished product, due to the restriction of road width, tunnel, bridge equidimension and secure context, the turntable bearing of oversize employing highway transport is infeasible substantially like this.
Being the technology traction of practical application request on the one hand, is keeping in check of processing transport short slab on the other hand, and this contradiction does not solve, and just cannot meet the market demand of development.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure.
The present invention realizes above-mentioned purpose and adopts following technological scheme:
A holder for three-row cylindrical roller combination turntable bearing for subdivision structure, the holder for three-row cylindrical roller combination turntable bearing of described subdivision structure includes combination outer race, the first combination inner ring and the second combination inner ring, between described combination outer race and the first combination inner ring, be provided with multiple main thrust rollers, between described combination outer race and the second combination inner ring, be provided with multiple secondary thrust rollers and radial roller, described combination outer race is to overlap by multistage outer ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two sections of outer ring subdivision sections, and axially being connected by hinged bolts location of adjacent two sections of described outer ring subdivision sections, the first described combination inner ring is to overlap by multistage the first inner ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two section of first inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described first inner ring subdivision sections, the second described combination inner ring is to overlap by multistage the second inner ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two section of second inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described second inner ring subdivision sections, the hop count of described the first inner ring subdivision section is identical with the hop count of the second inner ring subdivision section, and the hop count of described the first inner ring subdivision section, the hop count of the hop count of the second inner ring subdivision section and outer ring subdivision section is relatively prime, in turntable bearing rotary course, one place's subdivision otch of bearing outer ring and the first combination inner ring, when one place's subdivision otch of the second combination inner ring overlaps, other subdivision otch of bearing outer ring and the first combination inner ring, other subdivision otch of the second combination inner ring is interlaced, reduce bearing in subdivision incision because the discontinuous stress causing of suffered load is concentrated, between subdivision otch, the first combination subdivision otch of inner ring and the bus of main thrust roller of combination outer race, between the subdivision otch of combination outer race, the subdivision otch of the second combination inner ring and the bus of secondary thrust roller, all there is the angle of 5 °～15 °, with so that main thrust roller, secondary thrust roller can, reposefully by the subdivision otch on subdivision otch and combination outer race and the secondary thrust raceway of the second combination inner ring on combination outer race and the first combination inner ring main thrust raceway, reduce the shock and vibration in bearing operation process, the periphery of described combination outer race is toothed surface, and the subdivision otch of described combination outer race is cut the center portion in the Bottom land of described gear ring.
The holder for three-row cylindrical roller combination turntable bearing of a kind of subdivision structure that the present invention proposes, on the basis that meets bearing load carrying capacity, in the limited structure space of bearing, inner ring, outer ring all adopt split type structure, the sectional of realizing bearing forging forges, bearing completed products sectional is contained in the interior transport of shipping container, arrives the editing objective of assembling behind scene, has met the user demand of bearing load development; The subdivision hop count of the inside and outside circle of bearing is relatively prime, make certain in work rotary course of bearing in a flash, bearing inner race only has place's subdivision otch to overlap with bearing outer ring, other subdivision otch is interlaced, reduced bearing in incision because the discontinuous stress causing of suffered load is concentrated; Between subdivision otch, the first combination subdivision otch of inner ring and the bus of main thrust roller of combination outer race, between the subdivision otch of combination outer race, the subdivision otch of the second combination inner ring and the bus of secondary thrust roller, all there is the angle of 5 °～15 °, with so that main thrust roller, secondary thrust roller can, reposefully by the subdivision otch on subdivision otch and combination outer race and the secondary thrust raceway of the second combination inner ring on combination outer race and the first combination inner ring main thrust raceway, reduce the shock and vibration in bearing operation process; When the periphery of described combination outer race is toothed surface, the subdivision otch of described combination outer race subdivision section is cut the central position at the bottom of toothed surface teeth groove, has improved the operational safety of product.
Brief description of the drawings
Fig. 1 is the assembling schematic diagram of subdivision structure holder for three-row cylindrical roller combination turntable bearing.
Fig. 2 is the expansion schematic diagram of combination outer race external diameter direction in the present invention.
Fig. 3 is that in the present invention, the first combination inner ring internal diameter direction launches schematic diagram.
Fig. 4 is that in the present invention, the second combination inner ring internal diameter direction launches schematic diagram.
Fig. 5 is the structural representation that connects the first inner ring subdivision section with hinged bolts location.
Fig. 6 is the structural representation that combines inner ring subdivision section ladder overlap joint in the present invention.
Fig. 7 is 3 dimensional drawing of the present invention.
Fig. 8 by combination outer race split surface in the present invention crossing with thrust roller surface the structural representation of formation subdivision otch.
Fig. 9 by combination outer race split surface in the present invention crossing with external gear the structural representation of formation subdivision otch.
Figure 10 is use phase diagram of the present invention.
In figure: 1, combination outer race, 2, the first combination inner ring, 3, the second combination inner ring, 4, main thrust roller, 5, secondary thrust roller, 6, radial roller, 7, main thrust roller cage, 8, secondary thrust roller retainer, 9, radial roller retainer, 10, seal ring, 11, the second seal ring, 12, the 3rd seal ring, 13, attachment bolt, 14, outer ring subdivision section one, 15, outer ring subdivision section two, 16, outer ring subdivision section three, 17, the first inner ring subdivision section one, 18, the first inner ring subdivision section two, 19, the second inner ring subdivision section one, 20, the second inner ring subdivision section two, 21, hinged bolts, 22, inner ring construction bolt, 23, outer ring construction bolt, 24, hoist revolving table, 25, crane chassis.
Embodiment
By reference to the accompanying drawings, provide embodiments of the invention as follows, but the present invention does not limit to following examples.
As shown in Figure 1, a kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure, the holder for three-row cylindrical roller combination turntable bearing of described subdivision structure includes combination outer race 1, the first combination inner ring 2 and the second combination inner ring 3, between described combination outer race 1 and the first combination inner ring 2, be provided with multiple main thrust rollers 4, between described combination outer race 1 and the second combination inner ring 3, be provided with multiple secondary thrust rollers 5 and radial roller 6, as shown in Fig. 2, Fig. 6, described combination outer race 1 is for to overlap by multistage outer ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two sections of outer ring subdivision sections, and axially being connected by hinged bolts location of adjacent two sections of described outer ring subdivision sections, described in combination outer race 1, the structural type of outer ring subdivision section has three kinds: outer ring subdivision section 1 has in order to overlap with adjacent outer ring subdivision section the groove being connected for one end end face, and the other end end face is to have in order to overlap with adjacent outer ring subdivision section the boss being connected, the two ends end face of outer ring subdivision section 2 15 all has in order to overlap with adjacent outer ring subdivision section the groove being connected, outer ring subdivision section 3 16 all has in order to overlap with adjacent outer ring subdivision section the boss being connected for two ends end face, as shown in Fig. 3, Fig. 5, the first described combination inner ring 2 is for to overlap by multistage the first inner ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two section of first inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described first inner ring subdivision sections, the structural type of described the first inner ring subdivision section has two kinds: the two ends end face of the first inner ring subdivision section 1 all has in order to overlap with adjacent the first inner ring subdivision section the boss being connected, the two ends end face of the first inner ring subdivision section 2 18 all has in order to overlap with adjacent the first inner ring subdivision section the groove being connected, as shown in Figure 4, the second described combination inner ring 3 is for to overlap by multistage the second inner ring subdivision section ladder the fabricated structure forming, the structure difference of adjacent two section of second inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described second inner ring subdivision sections, the structural type of described the second inner ring subdivision section has two kinds: the two ends end face of the second inner ring subdivision section 1 all has in order to overlap with adjacent the second inner ring subdivision section the boss being connected, the two ends end face of the second inner ring subdivision section 2 20 all has in order to overlap with adjacent the second inner ring subdivision section the groove being connected, the hop count of described the first inner ring subdivision section is identical with the hop count of the second inner ring subdivision section, and the hop count of described the first inner ring subdivision section, the hop count of the hop count of the second inner ring subdivision section and outer ring subdivision section is relatively prime, in this embodiment, the hop count of the first inner ring subdivision section, the hop count of the second inner ring subdivision section is six sections, the hop count of outer ring subdivision section is seven sections, bearing is in the process of work rotation like this, at certain in a flash, bearing inner race only has place's subdivision otch to overlap with bearing outer ring, other subdivision otch is interlaced, reduced bearing in incision because the discontinuous stress causing of suffered load is concentrated, as shown in Figure 8, between subdivision otch, the first combination subdivision otch of inner ring and the bus of main thrust roller of combination outer race, between the subdivision otch of combination outer race, the subdivision otch of the second combination inner ring and the bus of secondary thrust roller, all have angle, angle is 5 °～15 °, with so that main thrust roller, secondary thrust roller can, reposefully by the subdivision otch on subdivision otch and combination outer race and the secondary thrust raceway of the second combination inner ring on combination outer race and the first combination inner ring main thrust raceway, reduce the shock and vibration in bearing operation process.As shown in Figure 9, the periphery of described combination outer race is gear ring structure, and the subdivision otch of described combination outer race is cut the center portion in the Bottom land of described gear ring.
When use, bearing level is installed, the first combination inner ring 2, the second combination inner ring 3 use inner ring construction bolts 22 are fastened together by the tapped hole on it and hoist revolving table 24, and combination outer race 1 use outer ring construction bolt 23 is fastened together by mounting hole and crane chassis 25; When bearing working, the driving pinion linking together with hoist revolving table 24 engages with the external tooth of bearing, pinion rotation, thus drive self and hoist revolving table 24 to turn round; The suffered axial force of hoist revolving table 24 is delivered to combination outer race 1 and crane chassis 25 by the first combination inner ring 2, main thrust roller 4; Suffered tilting moment is delivered to combination outer race 1 and crane chassis 25 by the second combination inner ring 3, secondary thrust roller 5; Suffered radial force is delivered to combination outer race 1 and crane chassis 25 by the second combination inner ring 3, radial roller 6.
Claims (1)
1. a holder for three-row cylindrical roller combination turntable bearing for subdivision structure, the holder for three-row cylindrical roller combination turntable bearing of described subdivision structure includes combination outer race (1), the first combination inner ring (2) and the second combination inner ring (3); Between described combination outer race (1) and the first combination inner ring (2), be provided with multiple main thrust rollers (4), between described combination outer race (1) and the second combination inner ring (3), be provided with multiple secondary thrust rollers (5) and radial roller (6); It is characterized in that: described combination outer race (1) is for to overlap by multistage outer ring subdivision section ladder the fabricated structure forming; The structure difference of adjacent two sections of outer ring subdivision sections, and axially being connected by hinged bolts location of adjacent two sections of described outer ring subdivision sections; The first described combination inner ring (2) is for to overlap by multistage the first inner ring subdivision section ladder the fabricated structure being formed by connecting; The structure difference of adjacent two section of first inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described first inner ring subdivision sections; The second described combination inner ring (3) is for to overlap by multistage the second inner ring subdivision section ladder the fabricated structure forming; The structure difference of adjacent two section of second inner ring subdivision section, and axially being connected by hinged bolts location of adjacent two sections of described second inner ring subdivision sections; The hop count of described the first inner ring subdivision section is identical with the hop count of the second inner ring subdivision section, and the hop count of the hop count of the hop count of described the first inner ring subdivision section, the second inner ring subdivision section and outer ring subdivision section is relatively prime, in the time that place's subdivision otch of bearing outer ring overlaps with place's subdivision otch of the first combination inner ring, the second combination inner ring, other subdivision otch of other subdivision otch of bearing outer ring and the first combination inner ring, the second combination inner ring is interlaced, reduce bearing in subdivision incision because the discontinuous stress causing of suffered load is concentrated; Between subdivision otch, the first combination subdivision otch of inner ring and the bus of main thrust roller of combination outer race, between the subdivision otch of combination outer race, the subdivision otch of the second combination inner ring and the bus of secondary thrust roller, all there is the angle of 5 °～15 °, with so that main thrust roller, secondary thrust roller can, reposefully by the subdivision otch on subdivision otch and combination outer race and the secondary thrust raceway of the second combination inner ring on combination outer race and the first combination inner ring main thrust raceway, reduce the shock and vibration in bearing operation process; The periphery of described combination outer race is gear ring structure, and the subdivision otch of described combination outer race is cut the center portion in the Bottom land of described gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416326.2A CN104196879B (en) | 2014-08-22 | 2014-08-22 | A kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416326.2A CN104196879B (en) | 2014-08-22 | 2014-08-22 | A kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104196879A true CN104196879A (en) | 2014-12-10 |
| CN104196879B CN104196879B (en) | 2016-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410416326.2A Active CN104196879B (en) | 2014-08-22 | 2014-08-22 | A kind of holder for three-row cylindrical roller combination turntable bearing of subdivision structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196879B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832545A (en) * | 2015-05-13 | 2015-08-12 | 广西梧州运龙港船机械制造有限公司 | Turntable bearing of marine crane |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861171A (en) * | 1987-12-23 | 1989-08-29 | Koyo Seiko Co., Ltd. | Composite cylindrical roller bearing assembly |
| JPH02304216A (en) * | 1989-05-12 | 1990-12-18 | Ntn Corp | Bearing segment of large-sized rolling bearing |
| CN2802173Y (en) * | 2005-06-13 | 2006-08-02 | 鞍钢附企综合企业公司 | Bearing for tank rotary and load-bearing of torpedo hot metal mixer car |
| DE102006056186A1 (en) * | 2006-11-27 | 2008-06-05 | Rothe Erde Gmbh | Roller bearings, in particular center-free slewing bearings |
| CN101761554A (en) * | 2009-11-11 | 2010-06-30 | 湘电风能有限公司 | Three-row cylindrical roller bearing for directly driven wind generators |
| JP2010190324A (en) * | 2009-02-18 | 2010-09-02 | Jtekt Corp | Raceway member and method for manufacturing raceway member |
| CN203257889U (en) * | 2013-04-15 | 2013-10-30 | 洛阳Lyc轴承有限公司 | Vertically installed three-row cylindrical roller combined rotating disc bearing retainer |
| CN103477100A (en) * | 2011-01-19 | 2013-12-25 | Imo控股有限责任公司 | Rotor bearing for a wind power generating plant |
-
2014
- 2014-08-22 CN CN201410416326.2A patent/CN104196879B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4861171A (en) * | 1987-12-23 | 1989-08-29 | Koyo Seiko Co., Ltd. | Composite cylindrical roller bearing assembly |
| JPH02304216A (en) * | 1989-05-12 | 1990-12-18 | Ntn Corp | Bearing segment of large-sized rolling bearing |
| CN2802173Y (en) * | 2005-06-13 | 2006-08-02 | 鞍钢附企综合企业公司 | Bearing for tank rotary and load-bearing of torpedo hot metal mixer car |
| DE102006056186A1 (en) * | 2006-11-27 | 2008-06-05 | Rothe Erde Gmbh | Roller bearings, in particular center-free slewing bearings |
| JP2010190324A (en) * | 2009-02-18 | 2010-09-02 | Jtekt Corp | Raceway member and method for manufacturing raceway member |
| CN101761554A (en) * | 2009-11-11 | 2010-06-30 | 湘电风能有限公司 | Three-row cylindrical roller bearing for directly driven wind generators |
| CN103477100A (en) * | 2011-01-19 | 2013-12-25 | Imo控股有限责任公司 | Rotor bearing for a wind power generating plant |
| CN203257889U (en) * | 2013-04-15 | 2013-10-30 | 洛阳Lyc轴承有限公司 | Vertically installed three-row cylindrical roller combined rotating disc bearing retainer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832545A (en) * | 2015-05-13 | 2015-08-12 | 广西梧州运龙港船机械制造有限公司 | Turntable bearing of marine crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104196879B (en) | 2016-08-10 |
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Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |