CN102322477A - Square raceway ball slewing bearing - Google Patents
Square raceway ball slewing bearing Download PDFInfo
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- CN102322477A CN102322477A CN201110160504A CN201110160504A CN102322477A CN 102322477 A CN102322477 A CN 102322477A CN 201110160504 A CN201110160504 A CN 201110160504A CN 201110160504 A CN201110160504 A CN 201110160504A CN 102322477 A CN102322477 A CN 102322477A
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- ring
- raceway
- annular groove
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- square
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Abstract
The invention relates to a square raceway ball slewing bearing which comprises an inner ring, an outer ring, a plurality of steel balls and a plurality of isolation blocks. The outer surface of the inner ring is provided with a first ring-shaped groove. The inner surface of the outer ring is provided with a second ring-shaped groove, wherein the position of the second ring-shaped groove corresponds to the position of the first ring-shaped groove; and the shapes of the first ring-shaped groove and the second ring-shaped groove are symmetrical. The first and second ring-shaped grooves are combined into a ring-shaped raceway. The steel balls and the isolation blocks are arranged in the ring-shaped raceway at intervals. Upper and lower combination positions of the inner and outer rings are respectively provided with sealing rings. The cross sections of the first and second ring-shaped grooves are of a right angled isosceles triangle shape. The cross section of the ring-shaped raceway is of a square shape. The square raceway ball slewing bearing disclosed by the invention is easy to process and detect and has high accuracy of a product, high stability and sensitivity of the product and low noise.
Description
Technical field
The present invention relates to the pivoting support technical field, relate in particular to a kind of square raceway ball-type slewing bearing.
Background technique
Pivoting support is a kind of large-scale or super-huge multi-functional eyelet, oil circuit and seal ring of having, and can bear the combination bearing of axial force, radial force and tilting moment simultaneously.
As shown in Figure 1; Mostly present employed pivoting support is the ball-type slewing bearing of wall scroll cylindrical shape ring-type raceway, and it comprises inner ring 1 ', outer ring 2 ', plurality of steel balls 3 ' and several spacing blocks, and the upper and lower end between inner ring 1 ' and the outer ring 2 ' 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, and it is circular ring-type raceway 5 ' that the annular groove 21 ' of outer ring 2 ' and the annular groove of inner ring 1 ' 11 ' are formed the cross section, and plurality of steel balls 3 ' and several spacing blocks are installed in the ring-type raceway 5 '; Between adjacent two steel balls 3 ' spacing block is set; In conjunction with shown in Figure 2, the sphere of each steel ball 3 ' has A, B, C, four point of contact contacts of D ring-type raceway wall, is called " four-point contact ball formula ".The cross section of the ring-type raceway 5 ' of existing this pivoting support is a sub-circular, and it is not real circle, and will on this ring-type raceway 5 ', process and A, B, C, the corresponding even surface in position, four point of contacts of D; This has all brought inconvenience for processing and fabricating and accuracy test; Four point of contact are difficult for establishing standard, and difference gap is difficult for grasping, and the product gap is big; Smoothness is poor, and noise is high.
Summary of the invention
The object of the present invention is to provide a kind of square raceway ball-type slewing bearing, its processing detects easily, the product precision is high, the smoothness of product and highly sensitive, noise is little.
To achieve these goals; Technical solution of the present invention is: a kind of square raceway ball-type slewing bearing; Comprise inside and outside circle, plurality of steel balls and several spacing blocks; The outer surface of said inner ring is provided with first annular groove, and the internal surface of said outer ring is provided with second annular groove corresponding with the first annular groove position and the shape symmetry, and said first and second annular groove is combined into the ring-type raceway; Said steel ball and spacing block are the interval and are installed in the said ring-type raceway; The upper and lower binding site of said inside and outside circle is respectively equipped with seal ring, and the cross section of wherein said first and second annular groove is an isosceles right triangle, and the cross section of said ring-type raceway is a square.
A kind of square raceway ball-type slewing bearing; Comprise inside and outside circle and several spacing blocks, the outer surface of said inner ring is provided with first annular groove, and the internal surface of said outer ring is provided with second annular groove corresponding with the first annular groove position and the shape symmetry; Said first and second annular groove is combined into the ring-type raceway; Said spacing block is installed in the said ring-type raceway, and the upper and lower binding site of said inside and outside circle is respectively equipped with seal ring, wherein also comprises several rollers; Said roller is installed in the ring raceway; The axis of adjacent said roller is 90 degree criss-crossings, and the diameter of said roller contacts with the wall of ring-type raceway greater than the cylinder of bus length and roller, and said roller and spacing block are set in distance; The cross section of said first and second annular groove is an isosceles right triangle, and the cross section of said ring-type raceway is a square.
The square raceway ball-type slewing bearing of the present invention wherein whenever is provided with one or several steel balls between two said rollers, be respectively equipped with spacing block between said steel ball and the adjacent roller and between the adjacent steel ball.
After adopting such scheme, the square raceway ball-type slewing bearing of the present invention is designed to square with the cross section of ring-type raceway, and its surperficial processing is more than the easy processing of cylindrical shape ring-type raceway face; Because the processing and fabricating flat incline plane is easier than the processing arc surface; Especially the check of the grasp of the location of point of contact, clearence degree, precision etc., it is 0～0.3mm that national sector standard requires the tolerance clearance of ball-type slewing bearing, the present invention can reach 0.005～0.05mm; Precision can improve 6 times; Adopt the present invention, smoothness, the sensitivity of product obviously improve, and noise significantly reduces.
Description of drawings
Fig. 1 is existing pivoting support structural representation;
Fig. 2 is the ring-type raceway cross section of existing pivoting support and the structural representation between the steel ball;
Fig. 3 is the structural representation of the square raceway ball-type slewing bearing of the present invention;
Fig. 4 is the ring-type raceway cross section of the square raceway ball-type slewing bearing of the present invention and the structural representation between the steel ball;
Fig. 5 is the steel ball of the square raceway ball-type slewing bearing of the present invention and the distributed architecture schematic representation between the spacing block;
Fig. 6 is the ring-type raceway cross section of the embodiment of the invention two and the structural representation between decussation roller;
Fig. 7 is the interior decussation roller distributed architecture schematic representation of the ring-type raceway of the embodiment of the invention two;
Fig. 8 is the interior plan structure schematic representation of the ring-type raceway of the embodiment of the invention three;
Fig. 9 is that cross section is the structural representation of ball-type slewing bearing of the ring-type raceway of vertical rhombus;
Figure 10 is that cross section is the structural representation of ball-type slewing bearing of the ring-type raceway of horizontal rhombus.
Below in conjunction with accompanying drawing, the present invention is done further explanation through embodiment.
Embodiment
See also shown in Figure 3; The square raceway ball-type slewing bearing of the present invention comprises inner ring 1, outer ring 2, plurality of steel balls 3 and several spacing blocks 4; The outer surface of inner ring 1 is provided with first annular groove 11; The cross section of first annular groove 11 is an isosceles right triangle, and it is foursquare ring-type raceway 5 that second annular groove, 21, the first annular grooves 11 and second annular groove 21 that the internal surface of outer ring 2 is provided with and shape corresponding with first annular groove, 11 positions symmetry is combined into cross section.
In conjunction with shown in Figure 5, steel ball 3 is the interval with spacing block 4 and is installed in the ring-type raceway 5, and the upper and lower binding site of inner ring 1 and outer ring 2 is respectively equipped with seal ring 6.
In conjunction with shown in Figure 4, steel ball 3 and cross section are that four point of contact E, F, G, the H of foursquare ring-type raceway 5 walls just in time drops on each bar limit mid point of square cross section, and four point of contact of itself and cylindrical shape ring-type raceway wall are in full accord.Yet the processing and fabricating flat incline plane is easier than the processing arc surface, the especially check of the grasp of the location of point of contact, clearence degree, precision etc., flat incline plane all than folder even surface in the arc surface directly perceived more with accurately.It is 0～0.3mm that national sector standard requires the ball-type slewing bearing tolerance clearance, and the present invention can reach 0.005～0.05mm, and precision can improve 6 times, adopts the present invention, and smoothness, the sensitivity of product obviously improve, and noise significantly reduces.And the cavity area between square ring-type raceway 5 and the steel ball 3 increases than the cavity area between existing cylindrical shape ring-type raceway and the steel ball, can store butter more, helps the lubricated and maintenance of rolling structure, the working life of having improved pivoting support.
Can only load spherical rolling element in the cylindrical shape raceway of existing pivoting support.In conjunction with Fig. 6 and shown in Figure 7; This pivoting support is with the difference of above-mentioned pivoting support structure: cross section is that what install in the foursquare ring-type raceway 5 is the identical roller of several shapes 7; The axis of adjacent two rollers 7 is 90 degree angle criss-crossings, and the diameter of roller 7 contacts with the wall of ring-type raceway 5 greater than the cylinder of bus length and roller 7.The roller 7 of filling criss-crossing in ring raceway 5, its rolling element compact structure is a little, and gap precision height, stability, structural quality are excellent.After the present invention changes cylindrical shape ring-type raceway and is square ring-type raceway 5, no matter in ring-type raceway 5, put steel ball 3 or put roller 7 all can, steel ball 3 can exchange according to the installation needs of different situations with roller 7 and use.
In conjunction with shown in Figure 3; The difference of this pivoting support and above-mentioned pivoting support structure is: place several rollers 7 in the ring raceway 5; The axis of adjacent two rollers 7 is 90 degree angle criss-crossings, whenever places a steel ball 3 at a distance from two rollers 7, and present embodiment is an example to place a steel ball 3; In the actual assembled process, also can place a plurality of steel balls.Be separately installed with spacing block 4 between steel ball 3 and the adjacent roller 7 and between the adjacent roller 7.In same ring-type raceway 5, press the sequence mixed packing through steel ball 3 and roller 7, can optimize the performance of rolling structure, and processing cost is lower than the pivoting support of whole filling criss-crossing rollers 7.
The shape of cross section that changes ring-type raceway 5 can change the force direction that receives of pivoting support, and the angle variation more greatly, and is stressed strong more.In conjunction with shown in Figure 9; When the cross section of first annular groove 11, second annular groove 21 is become the isosceles obtuse triangle by isosceles right triangle; Under the identical situation of steel ball 3 sphere diameters; The parallel level of moving near-ring shape raceway 5 cross sections of four point of contact of steel ball 3 then increases the axially loaded of pivoting support to diagonal.In conjunction with shown in Figure 10; When the cross section of first annular groove 11, second annular groove 21 is become isosceles acute triangle by isosceles right triangle; Under the identical situation of steel ball 3 sphere diameters; Four point of contact of steel ball 3 are parallel move near-ring shape raceway cross section vertically to diagonal, then increase the radial force of pivoting support.
The above embodiment describes 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 (3)
1. a square raceway ball-type slewing bearing comprises inside and outside circle (1,2), plurality of steel balls (3) and several spacing blocks (4); The outer surface of said inner ring (1) is provided with first annular groove (11); The internal surface of said outer ring (2) is provided with second annular groove (21) corresponding with first annular groove (11) position and the shape symmetry, and said first and second annular groove (11,21) is combined into ring-type raceway (5); Said steel ball (3) and spacing block (4) are the interval and are installed in the said ring-type raceway (5); The upper and lower binding site of said inside and outside circle (1,2) is respectively equipped with seal ring (6), it is characterized in that: said first and second annular groove (11; 21) cross section is an isosceles right triangle, and the cross section of said ring-type raceway (5) is a square.
2. a square raceway ball-type slewing bearing comprises inside and outside circle (1,2) and several spacing blocks (4); The outer surface of said inner ring (1) is provided with first annular groove (11), and the internal surface of said outer ring (2) is provided with second annular groove (21) corresponding with first annular groove (11) position and the shape symmetry, said first and second annular groove (11; 21) be combined into ring-type raceway (5), said spacing block (4) is installed in the said ring-type raceway (5), said inside and outside circle (1; 2) upper and lower binding site is respectively equipped with seal ring (6), it is characterized in that: also comprise several rollers (7), said roller (7) is installed in the ring raceway (5); The axis 90 degree criss-crossings of adjacent said roller (7); The diameter of said roller (7) contacts with the wall of ring-type raceway (5) greater than the cylinder of bus length and roller (7), and said roller (7) is set in distance said first and second annular groove (11 with spacing block (4); 21) cross section is an isosceles right triangle, and the cross section of said ring-type raceway (5) is a square.
3. square raceway ball-type slewing bearing as claimed in claim 2; It is characterized in that: whenever between two said rollers (7), be provided with one or several steel balls (3), be respectively equipped with spacing block (4) between said steel ball (3) and the adjacent roller (7) and between the adjacent steel ball (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110160504A CN102322477A (en) | 2011-06-15 | 2011-06-15 | Square raceway ball slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110160504A CN102322477A (en) | 2011-06-15 | 2011-06-15 | Square raceway ball slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322477A true CN102322477A (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110160504A Pending CN102322477A (en) | 2011-06-15 | 2011-06-15 | Square raceway ball slewing bearing |
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| Country | Link |
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| CN (1) | CN102322477A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195015A (en) * | 2016-08-30 | 2016-12-07 | 上海斐赛轴承科技有限公司 | A kind of crossed roller bearing of raceway band convexity and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814488A (en) * | 1973-03-26 | 1974-06-04 | Keene Corp | Bearing assembly |
| CN2039365U (en) * | 1988-07-13 | 1989-06-14 | 国营望江机器制造厂 | Bearing with rollers and steel balls in identical groove |
| CN2695716Y (en) * | 2004-04-23 | 2005-04-27 | 赵世吉 | Cross roller rotation support bearing |
| CN101788001A (en) * | 2009-12-07 | 2010-07-28 | 瓦房店轴承集团有限责任公司 | Novel four-point contact ball slewing bearing |
| CN201908948U (en) * | 2010-12-10 | 2011-07-27 | 江苏瑞特回转支承有限公司 | Slewing bearing for environmental protection equipment |
-
2011
- 2011-06-15 CN CN201110160504A patent/CN102322477A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814488A (en) * | 1973-03-26 | 1974-06-04 | Keene Corp | Bearing assembly |
| CN2039365U (en) * | 1988-07-13 | 1989-06-14 | 国营望江机器制造厂 | Bearing with rollers and steel balls in identical groove |
| CN2695716Y (en) * | 2004-04-23 | 2005-04-27 | 赵世吉 | Cross roller rotation support bearing |
| CN101788001A (en) * | 2009-12-07 | 2010-07-28 | 瓦房店轴承集团有限责任公司 | Novel four-point contact ball slewing bearing |
| CN201908948U (en) * | 2010-12-10 | 2011-07-27 | 江苏瑞特回转支承有限公司 | Slewing bearing for environmental protection equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195015A (en) * | 2016-08-30 | 2016-12-07 | 上海斐赛轴承科技有限公司 | A kind of crossed roller bearing of raceway band convexity and preparation method thereof |
| CN106195015B (en) * | 2016-08-30 | 2019-04-02 | 上海斐赛轴承科技有限公司 | A kind of crossed roller bearing and preparation method thereof of the raceway with convexity |
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Application publication date: 20120118 |