CN102312919B - Three-circle double-raceway slewing bearing - Google Patents
Three-circle double-raceway slewing bearing Download PDFInfo
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- CN102312919B CN102312919B CN 201110158796 CN201110158796A CN102312919B CN 102312919 B CN102312919 B CN 102312919B CN 201110158796 CN201110158796 CN 201110158796 CN 201110158796 A CN201110158796 A CN 201110158796A CN 102312919 B CN102312919 B CN 102312919B
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- raceway
- annular groove
- filling hole
- outer ring
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Abstract
The invention relates to a three-circle double-raceway slewing bearing and belongs to the technical field of slewing bearings. The three-circle double-raceway slewing bearing comprises an outer ring and an inner ring, wherein the inner wall of the outer ring and the outer wall of the inner ring are respectively provided with a first annular groove and a second annular groove; the three-circle double-raceway slewing bearing also comprises a central circle which is arranged between the outer ring and the inner ring; the inner and outer walls of the central circle are respectively provided with a third annular groove and a fourth annular groove which are symmetrically shaped and are corresponding to the second annular groove and the first annular groove; an external circular raceway is formed by the first annular groove and the fourth annular groove; an internal circular raceway is formed by the second annular groove and the third annular groove; the external circular raceway and the internal circular raceway are respectively provided with a plurality of rolling units; a spacing block is arranged between two adjacent rolling units; sealing rings are respectively arranged at the up and down joint of the outer ring and the central circle and the up and down joint of the central circle and the inner ring. The three-circle double-raceway slewing bearing provided by the invention is suitable for special main engine equipment for performing double rotation.
Description
Technical field
The present invention relates to the pivoting support technical field, relate in particular to the two raceway pivoting supports of a kind of three circles.
Background technique
Pivoting support be a kind of large-scale or super-huge with gear ring, multi-functional eyelet, oil circuit and seal ring, can bear simultaneously the combination bearing of axial force, radial force and tilting moment.
Present employed pivoting support mostly is the pivoting support of wall scroll raceway, as shown in Figure 1, it comprises inner ring 1 ', outer ring 2 ' and several steel balls 3 ', upper between inner ring 1 ' and the outer ring 2 ', the lower end is respectively equipped with seal ring 4 ', it is semicircular annular groove 11 ' that the outer surface of inner ring 1 ' is provided with the cross section, it is semicircular annular groove 21 ' that the internal surface of outer ring 2 ' is provided with the cross section, it is circular ring-type raceway that the annular groove 21 ' of outer ring 2 ' and the annular groove of inner ring 1 ' 11 ' form the cross section, steel ball 3 ' is installed in the ring-type raceway, the sphere of every steel ball 3 ' has four some contact ring-type raceway walls, be called " single four-point contact ball formula ", this pivoting support can have an astragal gear, interior astragal internal gear or outer astragal external gear, when mounted, generally be to be fixed on the shank of main process equipment without gear ring, allow gear ring carry out power transmission, rotate and revolution, the pivoting support of this traditional wall scroll raceway can only " single revolution ", when need to carrying out two revolution, will finish with two cover revolution supportings main process equipment, to making device structure too fat to move, and existing this pivoting support point of contact is few, discontinuity, poor stability, precision is low, working life is short.
Summary of the invention
The purpose of this invention is to provide the two raceway pivoting supports of a kind of three circles, it can carry out two revolutions.
For achieving the above object, the two raceway pivoting supports of the present invention's three circles, comprise the outer ring, inner ring, described outer ring inwall, interior ring outer wall is respectively equipped with the first ring connected in star, the second annular groove, wherein also comprise centre circle, centre circle is located between outer ring and the inner ring, in the described centre circle, outer wall is respectively equipped with and the second annular groove, the 3rd annular groove of first ring connected in star position correspondingly-shaped symmetry, the Fourth Ring connected in star, first ring connected in star and Fourth Ring connected in star form the outer ring-like raceway, ring-type raceway in the second annular groove and the 3rd annular groove form, the outer ring-like raceway, be arranged with respectively several rolling units in the interior ring-type raceway, be provided with a spacing block between every adjacent two rolling units, the position that outer ring and centre circle engage up and down, and centre circle is equipped with seal ring with the position that inner ring engages up and down.
The two raceway pivoting supports of the present invention's three circles, wherein, the cross section of described first ring connected in star, the second annular groove, the 3rd annular groove, Fourth Ring connected in star is semicircle, the cross section of outer ring-like raceway, interior ring-type raceway is circular, described rolling unit is steel ball, this steel ball size respectively with the equal diameters of the cross section of outer ring-like raceway, interior ring-type raceway.
The two raceway pivoting supports of the present invention's three circles, the cross section of wherein said first ring connected in star, the second annular groove is isosceles right triangle, described the 3rd annular groove, Fourth Ring connected in star are symmetrical with described first ring connected in star, the second annular groove position correspondingly-shaped respectively, described outer ring-like raceway, interior ring-type raceway cross section are square, described rolling unit is the short cylindrical shape roller, the diameter of short cylindrical shape roller equals the cross section length of side of outer ring-like raceway, interior ring-type raceway, the slightly larger in diameter of roller is in length, and the axis of adjacent two rollers is 90 degree angles.
The two raceway pivoting supports of the present invention's three circles, wherein, the cross section of described first ring connected in star, the second annular groove is isosceles right triangle, described the 3rd annular groove, Fourth Ring connected in star are symmetrical with described first ring connected in star, the second annular groove position correspondingly-shaped respectively, described outer ring-like raceway, interior ring-type raceway cross section are square, described rolling unit is steel ball, and steel ball size equates with the length of side of outer ring-like raceway, interior ring-type raceway cross section.
The two raceway pivoting supports of the present invention's three circles, wherein, described first ring connected in star, the cross section of the second annular groove is isosceles right triangle, described the 3rd annular groove, the Fourth Ring connected in star respectively with described first ring connected in star, the second annular groove position correspondingly-shaped is symmetrical, described outer ring-like raceway, interior ring-type raceway cross section is square, described rolling unit is two steel balls that are arranged in order, two rollers, the axis of adjacent two rollers is 90 degree angles, between adjacent two steel balls, be equipped with spacing block, steel ball size between adjacent two rollers, the roller diameter respectively with the outer ring-like raceway, the length of side of interior ring-type raceway cross section equates.
The two raceway pivoting supports of the present invention's three circles, wherein, the internal surface of described inner ring is provided with ring gear, radially be provided with respectively on outer ring, the centre circle and outer ring-like raceway first filling hole that communicate vertical with interior ring-type raceway and the second filling hole, the aperture of the first filling hole and the second filling hole is respectively greater than the cross-sectional diameter of outer ring-like raceway and interior ring-type raceway, be separately installed with the first plug and the second plug on the first filling hole and the second filling hole, the first plug and the second plug are fixed on outer ring and the centre circle by wearing pin respectively.
The two raceway pivoting supports of the present invention's three circles, wherein, the outer surface of described outer ring arranges external toothing, radially be provided with respectively on described centre circle, the inner ring and outer ring-like raceway first filling hole that communicate vertical with interior ring-type raceway and the second filling hole, the aperture of the first filling hole, the second filling hole is long greater than the cross section diagonal of outer ring-like raceway and interior ring-type raceway respectively, is separately installed with the first plug, the second plug on the first filling hole, the second filling hole.
The two raceway pivoting supports of the present invention's three circles, wherein, radially be provided with respectively on described outer ring, the inner ring and outer ring-like raceway first filling hole that communicate vertical with interior ring-type raceway and the second filling hole, the aperture of the first filling hole, the second filling hole is long greater than the cross section diagonal of outer ring-like raceway and interior ring-type raceway respectively, described the first filling hole and the second filling hole along continuous straight runs are interspersed, and are separately installed with the first plug, the second plug on the first filling hole, the second filling hole.
After adopting such scheme, the two raceway pivoting supports of the present invention's three circles are by arranging centre circle between inside and outside circle, between inner ring and the centre circle, be respectively equipped with the ring-type raceway between centre circle and the outer ring, be provided with steel ball in the ring-type raceway, realize two revolutions, two raceways have advantages of stability under loading, are particularly useful for carrying out the main process equipment of " two revolution ", as: in track traffic, be used for the connection between the compartment, can conveniently change the compartment direction; In liquid filling device, use two swivel gears, can easy-to-operat, reduce and leak and ensure safety, and the two pivoting supports of a cover three circles can replace before two cover revolution supportings come work; The cylindrical rollers of secondly installing in first and second ring-type raceway wherein has two tangent line contact ring-type raceway walls, and it supports the contact position and becomes two lines of every post, point of contact showed increased by 4 in every ball, reasonable stress is even, good stability, precision is high, long service life.
Specify the present invention below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of single raceway pivoting support in the prior art;
Fig. 2 is two raceway pivoting support embodiment one structural representations of the present invention's three circles;
Fig. 3 is the distributed architecture schematic diagram of two raceway pivoting support embodiment one steel balls of the present invention's three circles, spacing block;
Fig. 4 is two raceway pivoting support embodiment two structural representations of the present invention's three circles;
Fig. 5 is the distributed architecture schematic diagram of the two raceway pivoting support embodiment two short cylindrical shape rollers of the present invention's three circles, spacing block;
Fig. 6 is two raceway pivoting support embodiment three structural representations of the present invention's three circles;
Fig. 7 is the distributed architecture schematic diagram of steel ball, spacing block among the two raceway pivoting support embodiments three of the present invention's three circles;
Fig. 8 is the distributed architecture schematic diagram of two steel balls, two rollers and spacing block among the two raceway pivoting support embodiments four of the present invention's three circles.
Embodiment
See also Fig. 2, shown in Figure 3, the two raceway pivoting support embodiments one of the present invention's three circles, include outer ring 1, centre circle 2, inner ring 3, several steel balls 4, several spacing blocks 5, centre circle 2 is located between outer ring 1 and the inner ring 3, outer ring 1 inwall is provided with first ring connected in star 11, inner ring 3 outer walls are provided with the second annular groove 31, in the centre circle 2, outer wall is respectively equipped with and the second annular groove 31, the 3rd annular groove 21 of first ring connected in star 11 position correspondingly-shaped symmetries, Fourth Ring connected in star 22, it is circular outer ring-like raceway 8 that first ring connected in star 11 and Fourth Ring connected in star 22 form cross section, it is circular interior ring-type raceway 9 that the second annular groove 31 and the 3rd annular groove 21 form cross section, outer ring-like raceway 8, interior ring-type raceway 9 interior several steel balls 4 that are arranged with respectively, the diameter of steel ball respectively with outer ring-like raceway 8, the equal diameters of the cross section of interior ring-type raceway 9, be provided with a spacing block 5 between every adjacent two steel balls 4, the position that outer ring 1 and centre circle 2 engage up and down, and centre circle 2 is equipped with seal ring 6 with the position that inner ring 3 engages up and down.The internal surface of inner ring 3 is with ring gear, outer ring 1, radially be provided with respectively on the centre circle 2 and outer ring-like raceway 8 and interior ring-type raceway 9 vertical the first filling hole 12 that communicates and the second filling holes 23, the first filling hole 12 and the second filling hole 23 along continuous straight runs are interspersed, the aperture of the first filling hole 12 and the second filling hole 23 is respectively greater than the cross-sectional diameter of outer ring-like raceway 8 and interior ring-type raceway 9, being separately installed with the first plug 81 and the second plug 91, the first plugs 81 and the second plug 91 on the first filling hole 12 and the second filling hole 23 is fixed on outer ring 1 and the centre circle 2 by wearing pin 10 and wearing pin 20 respectively.
See also Fig. 4, shown in 5, the two raceway pivoting support embodiments two of the present invention's three circles, include outer ring 41, centre circle 42, inner ring 43, several short cylindrical shape rollers 44, several spacing blocks 45, outer ring 41 inwalls are provided with first ring connected in star 411, inner ring 43 outer walls are provided with the second annular groove 431, first ring connected in star 411, the cross section of the second annular groove 431 is isosceles right triangle, in the centre circle 42, outer wall is respectively equipped with and the second annular groove 431, the 3rd annular groove 421 of first ring connected in star 411 position correspondingly-shaped symmetries, Fourth Ring connected in star 422, it is foursquare outer ring-like raceway 47 that first ring connected in star 411 and Fourth Ring connected in star 422 form cross section, it is foursquare interior ring-type raceway 48 that the second annular groove 431 and the 3rd annular groove 421 form cross section, outer ring-like raceway 47, in the interior ring-type raceway 48, short cylindrical shape roller 44 is arranged in one horizontal one perpendicular criss-crossing respectively, the slightly larger in diameter of roller 44 is in length, diameter and bus length all are slightly less than interior ring-type raceway 48, the cross section length of side of outer ring-like raceway 47, such as diameter ∮=30mm, the long L=29.5mm of bus, square raceway length of side 30.02mm, " line contact " upper left bottom right, cylndrical surface or upper right lower-left raceway wall, end face does not contact, the axis of adjacent two rollers is 90 degree angles, is equipped with a spacing block 45 between every adjacent two rollers; The position that outer ring 41 and centre circle 42 engage up and down, and centre circle 42 is equipped with seal ring with the position that inner ring 43 engages up and down.Among this embodiment, 41 outer surface arranges external toothing 40 in the outer ring, radially be provided with respectively on centre circle 42, the inner ring 43 and outer ring-like raceway 47 and interior ring-type raceway 48 vertical the first filling hole 423 that communicates and the second filling holes 433, the aperture of the first filling hole 423, the second filling hole 433 is long greater than the cross section diagonal of outer ring-like raceway 47 and interior ring-type raceway 48 respectively, the first filling hole 423 and the second filling hole 433 along continuous straight runs are interspersed, and are separately installed with the first plug 424, the second plug 434 on the first filling hole, the second filling hole.
See also shown in Fig. 6,7, the two raceway pivoting support embodiments three of the present invention's three circles, be with above-described embodiment two differences, be arranged with the steel ball 49 identical with above-mentioned roller 44 diameters in outer ring-like raceway 47, the interior ring-type raceway 48, steel ball 49 " 4 contacts " cross section is foursquare raceway, is provided with spacing block 50 between adjacent two steel balls; On outer ring 41, the inner ring 43 all without gear ring, radially be provided with respectively on outer ring 41, the inner ring 43 and outer ring-like raceway 47 and interior ring-type raceway 48 vertical the first filling hole that communicates and the second filling holes, the aperture of the first filling hole, the second filling hole is long greater than the cross section diagonal of outer ring-like raceway 47 and interior ring-type raceway 48 respectively, the first filling hole and the second filling hole along continuous straight runs are interspersed, and are separately installed with the first plug, the second plug on the first filling hole, the second filling hole.
See also shown in Figure 8, the two raceway pivoting support embodiments four of the present invention's three circles, be with above-described embodiment two differences, outer ring-like raceway 47, interior 48 interior all mixing of ring-type raceway are arranged two steel balls 49, two rollers 44, the diameter of roller 44 and bus length all with interior ring-type raceway 48, the cross section length of side of outer ring-like raceway 47 equates, the slightly larger in diameter of roller 44 is in length, the axis of adjacent two rollers is 90 degree angles, " line contact " upper left bottom right, cylndrical surface or upper right lower-left raceway wall are between two steel balls, between two rollers, be equipped with spacing block 50 between steel ball and the roller.
These invention three circle two-orbit pivoting supports have the following advantages: can realize two revolutions, and two raceways have advantages of stability under loading, be particularly useful for carrying out the main process equipment of " two revolution ", as: in track traffic, be used for the connection between the compartment, can conveniently change the compartment direction; In liquid filling device, use two swivel gears, can easy-to-operat, reduce and leak and ensure safety, and the two pivoting supports of a cover three circles can replace before two cover revolution supportings come work; The cylindrical rollers of secondly installing in first and second ring-type raceway wherein has two tangent line contact ring-type raceway walls, and it supports the contact position and becomes two lines of every post, point of contact showed increased by 4 in every ball, reasonable stress is even, good stability, precision is high, long service life.In actual use, for precision and the higher main frame of quality requirements, more to increase the cross arrangement proportion of short cylindrical shape roller.
The above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. one kind three is enclosed two raceway pivoting supports, comprise outer ring (1), centre circle (2), inner ring (3), described outer ring (1) inwall, inner ring (3) outer wall is respectively equipped with first ring connected in star (11), the second annular groove (31), centre circle (2) is located between outer ring (1) and the inner ring (3), in the described centre circle (2), outer wall is respectively equipped with and the second annular groove (31), the 3rd annular groove (21) of first ring connected in star (11) position correspondingly-shaped symmetry, Fourth Ring connected in star (22), first ring connected in star (11) forms outer ring-like raceway (8) with Fourth Ring connected in star (22), ring-type raceway (9) in the second annular groove (31) forms with the 3rd annular groove (21), outer ring-like raceway (8), be arranged with respectively rolling unit in the interior ring-type raceway (9), be provided with a spacing block (5) between every adjacent two rolling units, the position that outer ring (1) and centre circle (2) engage up and down, and centre circle (2) is equipped with seal ring with the position that inner ring (3) engages up and down, it is characterized in that: described first ring connected in star (11), the cross section of the second annular groove (31) is isosceles right triangle, described the 3rd annular groove (21), Fourth Ring connected in star (22) respectively with described first ring connected in star (11), the second annular groove (31) position correspondingly-shaped is symmetrical, described outer ring-like raceway (8), interior ring-type raceway (9) cross section is square, described rolling unit is short cylindrical shape roller (44), the diameter of short cylindrical shape roller (44) equals outer ring-like raceway (8), the cross section length of side of interior ring-type raceway (9), the slightly larger in diameter of roller (44) is in length, and the axis of adjacent two rollers is 90 degree angles.
2. as claimed in claim 1 three enclose two raceway pivoting supports, it is characterized in that, described first ring connected in star (11), the cross section of the second annular groove (31) is isosceles right triangle, described the 3rd annular groove (21), Fourth Ring connected in star (22) respectively with described first ring connected in star (11), the second annular groove (31) position correspondingly-shaped is symmetrical, described outer ring-like raceway (8), interior ring-type raceway (9) cross section is square, described rolling unit is steel ball, steel ball size and outer ring-like raceway (8), the length of side of interior ring-type raceway (9) cross section equates.
3. as claimed in claim 1 three enclose two raceway pivoting supports, it is characterized in that, described first ring connected in star (11), the cross section of the second annular groove (31) is isosceles right triangle, described the 3rd annular groove (21), Fourth Ring connected in star (22) respectively with described first ring connected in star (11), the second annular groove (31) position correspondingly-shaped is symmetrical, described outer ring-like raceway (8), interior ring-type raceway (9) cross section is square, described rolling unit is two steel balls (49) that are arranged in order, two rollers (44), the axis of adjacent two rollers is 90 degree angles, between adjacent two steel balls, be equipped with spacing block, steel ball size between adjacent two rollers and between steel ball and the roller, the roller diameter respectively with outer ring-like raceway (8), the length of side of interior ring-type raceway (9) cross section equates.
4. such as the two raceway pivoting supports of three circles one of as described in the claim 1-3, it is characterized in that, the internal surface of described inner ring (3) is provided with ring gear, outer ring (1), radially be provided with respectively on the centre circle (2) and outer ring-like raceway (8) first filling hole (12) that communicate vertical with interior ring-type raceway (9) and the second filling hole (23), the aperture of the first filling hole (12) and the second filling hole (23) is respectively greater than the cross-sectional diameter of outer ring-like raceway (8) and interior ring-type raceway (9), be separately installed with the first plug (81) and the second plug (91) on the first filling hole (12) and the second filling hole (23), the first plug (81) and the second plug (91) are fixed on outer ring (1) and the centre circle (2) by wearing pin (10) and wearing pin (20) respectively.
5. such as the two raceway pivoting supports of three circles one of as described in the claim 1-3, it is characterized in that, the outer surface of described outer ring (1) arranges external toothing, described centre circle (2), radially be provided with respectively on the inner ring (3) and outer ring-like raceway (8) first filling hole (423) that communicate vertical with interior ring-type raceway (9) and the second filling hole (433), the first filling hole (423), the aperture of the second filling hole (433) is long greater than the cross section diagonal of outer ring-like raceway (47) and interior ring-type raceway (48) respectively, the first filling hole, be separately installed with the first plug (424) on the second filling hole, the second plug (434).
6. such as the two raceway pivoting supports of three circles one of as described in the claim 1-3, it is characterized in that, described outer ring (1), radially be provided with respectively on the inner ring (3) and outer ring-like raceway (8) first filling hole that communicate vertical with interior ring-type raceway (9) and the second filling hole, the first filling hole, the aperture of the second filling hole is long greater than the cross section diagonal of outer ring-like raceway (8) and interior ring-type raceway (9) respectively, described the first filling hole and the second filling hole along continuous straight runs are interspersed the first filling hole, be separately installed with the first plug on the second filling hole, the second plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158796 CN102312919B (en) | 2011-06-14 | 2011-06-14 | Three-circle double-raceway slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158796 CN102312919B (en) | 2011-06-14 | 2011-06-14 | Three-circle double-raceway slewing bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102312919A CN102312919A (en) | 2012-01-11 |
| CN102312919B true CN102312919B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110158796 Expired - Fee Related CN102312919B (en) | 2011-06-14 | 2011-06-14 | Three-circle double-raceway slewing bearing |
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| CN (1) | CN102312919B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104598A (en) * | 2012-12-21 | 2013-05-15 | 安徽枞晨回转支承有限公司 | Double-raceway yaw bearing of large wind turbine unit |
| CN103711790B (en) * | 2013-11-21 | 2016-02-10 | 安徽枞晨回转支承有限公司 | External tooth type pivoting support in a kind of three circles |
| CN103802130B (en) * | 2014-01-27 | 2016-04-06 | 中国船舶重工集团公司第七一〇研究所 | A kind of three layers of cradle apparatus with two-freedom |
| CN106670734B (en) * | 2016-07-27 | 2018-12-04 | 马鞍山市安耐特回转支承有限公司 | A kind of processing method of worm-gear type pivoting support |
| DE102019206235A1 (en) * | 2019-04-30 | 2020-11-05 | Aktiebolaget Skf | Rolling bearing with three concentric rings |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11153132A (en) * | 1997-11-21 | 1999-06-08 | Harmonic Drive Syst Ind Co Ltd | Roller inserting method of cross roller bearing |
| CN201106629Y (en) * | 2007-11-13 | 2008-08-27 | 洛阳轴研科技股份有限公司 | Novel high-precision tri-ring bearing |
| CN101769318A (en) * | 2008-12-26 | 2010-07-07 | 瓦房店鹏东轴承制造有限公司 | Cylindrical roller bearing with block |
| CN101876346A (en) * | 2009-04-30 | 2010-11-03 | 优必胜(上海)精密轴承制造有限公司 | Angular contact ball bearing |
| CN201473990U (en) * | 2009-07-17 | 2010-05-19 | 安徽省宁国顺昌机械有限公司 | Rotating support used of excavator |
| CN201619973U (en) * | 2010-01-23 | 2010-11-03 | 马鞍山方圆回转支承股份有限公司 | Double-row ball type slewing bearing |
| CN202040206U (en) * | 2011-05-11 | 2011-11-16 | 安徽枞晨回转支承有限公司 | Three-ring double-ball slewing bearing |
| CN202091358U (en) * | 2011-05-12 | 2011-12-28 | 安徽枞晨回转支承有限公司 | Three-race double-cross roller type slewing bearing |
-
2011
- 2011-06-14 CN CN 201110158796 patent/CN102312919B/en not_active Expired - Fee Related
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| CN102312919A (en) | 2012-01-11 |
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Granted publication date: 20130410 Termination date: 20160614 |