CN102278368A - Double-row column type slewing bearing - Google Patents
Double-row column type slewing bearing Download PDFInfo
- Publication number
- CN102278368A CN102278368A CN2011101587334A CN201110158733A CN102278368A CN 102278368 A CN102278368 A CN 102278368A CN 2011101587334 A CN2011101587334 A CN 2011101587334A CN 201110158733 A CN201110158733 A CN 201110158733A CN 102278368 A CN102278368 A CN 102278368A
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- China
- Prior art keywords
- ring
- trough
- raceway
- straight angle
- circle
- 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.)
- Pending
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
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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
- F16C19/30—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 axial load mainly
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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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a bearing with rolling contact special for rotation movement, particularly a double-row column type slewing bearing, which aims to provide a double-row column type slewing bearing in which the contact form of a roller and a race is linear contact. The slewing bearing has the advantages of reasonable stress, stable operation and low noise. The double-row column type slewing bearing comprises an outer ring and an inner ring between which annular rectangular upper race and lower race are arranged, a plurality of columnar rollers are arranged in the upper race and the lower race and are separated by using spacing blocks in pairs, and the axial line of each roller is parallel or vertical to the axial line of the upper race. With a matching structure of the rectangular races and the columnar rollers, the number of contacts between rolling bodies and race walls is increased, the bearing capacity of the slewing bearing is enhanced, the race structure is optimized, the rolling structure has compact size, reduced interval and improved precision, the stress of the inner ring and the outer ring is reasonable, the stability of the slewing bearing is reinforced and the noise is reduced.
Description
Technical field
The present invention relates to a kind of bearings with rolling contact that rotatablely moves that is exclusively used in, particularly relate to a kind of double-row type pivoting support.
Background technique
Pivoting support is used very extensive in real industry, be called by people: " joint of machine ", it is mainly used in being widely used in: truck crane, locomotive crane, portal crane, ship's crane, crane for steelworks use, container crane, excavator, filling machine and aspects such as CT machine standing wave therapeutic equipment, nautical instrument, radar antenna base, missile launcher, tank, robot and revolving restaurant.Pivoting support is a kind of gear, multi-functional eyelet, oil circuit and Sealing Device of being provided with, and can bear the large-scale combined bearing of axial force, radial force and tilting moment simultaneously.Its main body generally is to be made of inside and outside two steel rings, and corresponding raceway that is provided with a ring-type, cross section approximate circle shape of two circles loads rolling elements such as steel ball in the raceway.Every steel ball sphere has upper left, upper right, the lower-left, four the some contacts in bottom right raceway wall, so, common pivoting support just is called " single four-point contact ball formula ", this structure bearing load is less, for great type pivoting support, the double ball formula structure of general employing, because there is double raceway, the load-carrying ability of double ball formula and stability all obviously are better than single-row ball type, but in double ball formula structure, only have 4 some contact raceway walls of every steel ball to support, it is few to support point of contact, exist stressed irrational shortcoming, and operation is not steady, the noise height.
Summary of the invention
The contact form that the technical problem to be solved in the present invention provides a kind of roller and raceway is the double central pest slewing ring that line contacts, and this pivoting support is stressed rationally, operates steadily, noise is low.
A kind of double central pest slewing ring of the present invention, comprise outer ring and inner ring, be provided with some gear teeth at the outer surface of outer ring or the internal surface of inner ring, inner ring is installed in the outer ring, and the axis of inner ring and the dead in line of outer ring, offer first trough with straight angle and second trough with straight angle of annular on the internal surface of wherein said outer ring, offer the 3rd trough with straight angle and the 4th trough with straight angle of annular on the outer surface of inner ring, first trough with straight angle and the 3rd trough with straight angle are combined into raceway on the ring-type that the cross section is a rectangle, and second trough with straight angle and the 4th trough with straight angle are combined into raceway under the ring-type that the cross section is a rectangle; In last raceway and the following raceway some cylindrical roller are installed, roller separates with spacing block between any two, the parallel axes of roller or perpendicular to the axis of last raceway, there is the gap between spacing block in the last raceway and the last raceway, there is the gap between spacing block in the following raceway and the following raceway, the side surface of the roller in the last raceway contacts with last raceway, and the side surface of the roller in the following raceway contacts with following raceway.
The outer surface of the wherein said outer ring of the double central pest slewing ring of the present invention is provided with the gear teeth, and first trough with straight angle is positioned at the upper-end surface of outer ring and the internal surface place that combines, and second trough with straight angle is positioned at the lower end surface of outer ring and the internal surface place that combines; Shang Quan and Nei Xiaquan in inner ring comprises, interior lower end surface and interior upper-end surface applying of enclosing down of going up circle, and interior Shang Quan is fixedlyed connected with interior down circle, and the 3rd trough with straight angle is positioned at the lower end surface of circle and the outer surface place that combines, upper-end surface of enclosing under the 4th trough with straight angle is positioned at and the outer surface place that combines.
The internal surface of the wherein said inner ring of the double central pest slewing ring of the present invention is provided with the gear teeth, the outer ring comprises outer Shang Quan and Wai Xiaquan, fit in outer lower end surface and the outer upper-end surface of circle down of going up circle, and outer Shang Quan is fixedlyed connected with outer circle down, first trough with straight angle is positioned at outer lower end surface of going up circle and the internal surface place that combines, second trough with straight angle is positioned at the upper-end surface of outer circle down and the internal surface place that combines, the 3rd trough with straight angle is positioned at the upper-end surface of inner ring and the outer surface place that combines, and the 4th trough with straight angle is positioned at the lower end surface of inner ring and the outer surface place that combines.
The internal surface of the wherein said outer ring of the double central pest slewing ring of the present invention and the outer surface of inner ring are provided with seal ring, and seal ring is used for the gap between sealed outer ring and the inner ring.
Offer oil hole on wherein said outer ring of the double central pest slewing ring of the present invention or the inner ring.
The double central pest slewing ring difference from prior art of the present invention is that the present invention adopts double raceway, optimized the raceway structure, improved the bearing capacity of pivoting support, the structure that adopts the rectangle raceway to match with cylindrical roller, compare ball formula structure, increased the point of contact of rolling element and raceway wall, contact by every steel ball sphere 4 with the raceway wall, become every roller the cylndrical surface up and down or about two tangent lines contact raceway walls, make the rolling structure compact dimensions, the gap reduces, precision improves, make inner ring and outer ring stressed rationally, strengthened the stability of pivoting support, reduced noise.
Below in conjunction with accompanying drawing the double central pest slewing ring of the present invention is described further.
Description of drawings
Fig. 1 looks sectional view (the outer ring outer surface is provided with the gear teeth) for the master of the double central pest slewing ring of the present invention;
Fig. 2 looks sectional view (the inner ring internal surface is provided with the gear teeth) for the master of the double central pest slewing ring of the present invention;
Fig. 3 is the phase diagram (axis normal of roller is in the axis of outer ring) of the cylindrical roller lateral arrangement of the double central pest slewing ring of the present invention;
The phase diagram (parallel axes of roller is in the axis of outer ring) that Fig. 4 vertically arranges for the cylindrical roller of the double central pest slewing ring of the present invention;
Fig. 5 is the phase diagram of the cylindrical roller mixed-arrangement of the double central pest slewing ring of the present invention (cylindrical roller parallel or perpendicular to the axis of outer ring).
Embodiment
Embodiment 1:
As shown in Figure 1, the double central pest slewing ring of the present invention comprises outer ring 1 and inner ring 2, the outer surface of outer ring 1 is provided with some gear teeth, inner ring 2 is installed in the outer ring 1, and the dead in line of the axis of inner ring 2 and outer ring 1, wherein the position that combines of the upper-end surface of outer ring 1 and internal surface offers first trough with straight angle 7 of annular, and the position that the lower end surface of outer ring 1 and internal surface combine offers second trough with straight angle 8 of annular.Going up circle 9 and interior circle 10 down in inner ring 2 comprises, fits in interior lower end surface and the interior upper-end surface of circle 10 down of going up circle 9, and the interior circle 9 of going up is connected with interior circle 10 usefulness bolt down; In go up the 3rd trough with straight angle 11 that the lower end surface of circle 9 and position that outer surface combines offer annular, the upper-end surface of interior circle 10 down and the position that outer surface combines offer the 4th trough with straight angle 12 of annular; First trough with straight angle 7 and the 3rd trough with straight angle 11 are combined into that raceway 3, the second trough with straight angle 8 and the 4th trough with straight angle 12 are combined into raceway 4 under the ring-type that the cross section is a rectangle on the ring-type that the cross section is a rectangle, the axis of last raceway 3 and following raceway 4 all with the dead in line of outer ring 1.In last raceway 3 and following raceway 4, some cylindrical roller 6 are installed, roller 6 separates with plastic cement spacing block 5 between any two, in conjunction with shown in Figure 3, the axis normal that wherein goes up the roller 6 in the raceway 3 is in the axis of last raceway 3, in conjunction with shown in Figure 4, the parallel axes of the roller 6 in the following raceway 4 is in the axis of following raceway 4.There is the gap between spacing block 5 in the last raceway 3 and the last raceway 3, there is the gap between spacing block 5 in the following raceway 4 and the following raceway 4, fill with lubricating grease in gap between spacing block 5 and last raceway 3 or the following raceway 4, the side surface of the roller 6 in the last raceway 3 contacts with last raceway 3, and the side surface of the roller 6 in the following raceway 4 contacts with following raceway 4.The outer surface of the internal surface of outer ring 1 and inner ring 2 is provided with seal ring 19, is used for the gap between sealed outer ring 1 and the inner ring 2.Offer oil hole 20 on the circle 9 on interior.
Embodiment 2:
As shown in Figure 2, the double central pest slewing ring of the present invention comprises outer ring 1 and inner ring 2, the internal surface of inner ring 2 is provided with some gear teeth, inner ring 2 is installed in the outer ring 1, and the dead in line of the axis of inner ring 2 and outer ring 1, wherein outer ring 1 comprises outer circle 13 and the outer circle 14 down gone up, and fits in outer lower end surface and the outer upper-end surface of circle 14 down of going up circle 13, and the outer circle 13 of going up is connected with outer circle 14 usefulness bolt down.The lower end surface of outer upward circle 13 and the position that internal surface combines offer first trough with straight angle 7 ' of annular, the upper-end surface of outer circle 14 down and the position that internal surface combines offer second trough with straight angle 8 ' of annular, the position that the upper-end surface of inner ring 2 and outer surface combine offers the 3rd trough with straight angle 11 ' of annular, and the position that the lower end surface of inner ring 2 and outer surface combine offers the 4th trough with straight angle 12 ' of annular.First trough with straight angle 7 ' and the 3rd trough with straight angle 11 ' are combined into raceway 3 on the ring-type that the cross section is a rectangle, second trough with straight angle 8 ' and the 4th trough with straight angle 12 ' are combined into raceway 4 under the ring-type that the cross section is a rectangle, the axis of last raceway 3 and following raceway 4 all with the dead in line of inner ring 2.In last raceway 3 and following raceway 4, some cylindrical roller 6 are installed, roller 6 separates with plastic cement spacing block 5 between any two, in conjunction with shown in Figure 3, the axis normal that wherein goes up the roller 6 in the raceway 3 is in the axis of last raceway 3, in conjunction with shown in Figure 4, the parallel axes of the roller 6 in the following raceway 4 is in the axis of following raceway 4.There is the gap between spacing block 5 in the last raceway 3 and the last raceway 3, there is the gap between spacing block 5 in the following raceway 4 and the following raceway 4, fill with lubricating grease in gap between spacing block 5 and last raceway 3 or the following raceway 4, the side surface of the roller 6 in the last raceway 3 contacts with last raceway 3, and the side surface of the roller 6 in the following raceway 4 contacts with following raceway 4.The outer surface of the internal surface of outer ring 1 and inner ring 2 is provided with seal ring 19, is used for the gap between sealed outer ring 1 and the inner ring 2.Go up on the circle 13 outside and offer oil hole 20.
Working principle of the present invention is: replace spherical roller by using cylindrical rollers, increased the point of contact of roller and raceway wall, the cylndrical surface of roller up and down or about two tangent lines contact raceway walls, improved the bearing capacity of pivoting support, make that rolling structure compact dimensions, gap reduce, precision improves, make inner ring and outer ring stressed rationally, strengthened the stability of pivoting support, reduced noise.
The spread pattern of the roller of the double central pest slewing ring of the present invention can also be: the axis of going up the interior cylindrical roller of raceway and following raceway all with the parallel axes of outer ring; The axis of the cylindrical roller that last raceway and following raceway are interior all with the axis normal of outer ring; As shown in Figure 5, the cylindrical roller 6 in last raceway and the following raceway is mixed arrangements, i.e. the axis normal of the axis of roller and outer ring or parallel.
Above-described 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 those of ordinary skills make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. double central pest slewing ring, comprise outer ring (1) and inner ring (2), the internal surface of the outer surface of (1) or inner ring (2) is provided with some gear teeth in the outer ring, inner ring (2) is installed in the outer ring (1), and the dead in line of the axis of inner ring (2) and outer ring (1), it is characterized in that: first trough with straight angle (7) and second trough with straight angle (8) that offer annular on the internal surface of described outer ring (1), offer the 3rd trough with straight angle (11) and the 4th trough with straight angle (12) of annular on the outer surface of inner ring (2), described first trough with straight angle (7) is combined into raceway (3) on the ring-type that the cross section is a rectangle with the 3rd trough with straight angle (11), and described second trough with straight angle (8) is combined into raceway (4) under the ring-type that the cross section is a rectangle with the 4th trough with straight angle (12); Described going up in raceway (3) and the following raceway (4) is equipped with some cylindrical roller (6), described roller (6) uses spacing block (5) to separate between any two, the parallel axes of described roller (6) or perpendicular to the axis of last raceway (3), there is the gap in described going up between interior spacing block (5) of raceway (3) and the last raceway (3), there is the gap between spacing block (5) in the following raceway (4) and the following raceway (4), the described side surface of going up the roller (6) in the raceway (3) contacts with last raceway (3), and the side surface of the roller (6) in the following raceway (4) contacts with following raceway (4).
2. double central pest slewing ring according to claim 1, it is characterized in that: the outer surface of described outer ring (1) is provided with the gear teeth, described first trough with straight angle (7) is positioned at the upper-end surface of outer ring (1) and the internal surface place that combines, and described second trough with straight angle (8) is positioned at the lower end surface of outer ring (1) and the internal surface place that combines; In comprising, goes up described inner ring (2) circle (9) and interior circle (10) down, going up the lower end surface of circle (9) and the upper-end surface of Nei Xiaquan (10) in described fits, and the interior circle (9) of going up is fixedlyed connected with interior circle (10) down, described the 3rd trough with straight angle (11) is positioned at the lower end surface of circle (9) and the outer surface place that combines, and described the 4th trough with straight angle (12) is positioned at the upper-end surface of Nei Xiaquan (10) and the outer surface place that combines.
3. double central pest slewing ring according to claim 1, it is characterized in that: the internal surface of described inner ring (2) is provided with the gear teeth, described outer ring (1) comprises outer circle (13) and the outer circle (14) down gone up, described outer the go up lower end surface of circle (13) and the upper-end surface applying of Wai Xiaquan (14), and the outer circle (13) of going up is fixedlyed connected with outer circle (14) down, described first trough with straight angle (7 ') is positioned at outer lower end surface of going up circle (13) and the internal surface place that combines, described second trough with straight angle (8 ') is positioned at the upper-end surface of Wai Xiaquan (14) and the internal surface place that combines, described the 3rd trough with straight angle (11 ') is positioned at the upper-end surface of inner ring (2) and the outer surface place that combines, and described the 4th trough with straight angle (12 ') is positioned at the lower end surface of inner ring (2) and the outer surface place that combines.
4. according to claim 2 or 3 described double central pest slewing rings, it is characterized in that: the outer surface of the internal surface of described outer ring (1) and inner ring (2) is provided with seal ring (19), and described seal ring (19) is used for the gap between sealed outer ring (1) and the inner ring (2).
5. double central pest slewing ring according to claim 4 is characterized in that: offer oil hole (20) on described outer ring (1) or the inner ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101587334A CN102278368A (en) | 2011-06-14 | 2011-06-14 | Double-row column type slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101587334A CN102278368A (en) | 2011-06-14 | 2011-06-14 | Double-row column type slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278368A true CN102278368A (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101587334A Pending CN102278368A (en) | 2011-06-14 | 2011-06-14 | Double-row column type slewing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278368A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650241A (en) * | 2015-12-10 | 2016-06-08 | 刘元生 | Adjustable timing gear of engine |
| CN105715672A (en) * | 2016-04-27 | 2016-06-29 | 洛阳鸿元轴承科技有限公司 | Double-column intersecting cylindrical roller bearing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779140Y (en) * | 2004-12-31 | 2006-05-10 | 瓦房店轴承集团有限责任公司 | Double row integrated angular contact cylindrical roller rotary supporting bearing |
| CN201568451U (en) * | 2009-12-25 | 2010-09-01 | 徐州丰禾回转支承制造有限公司 | Double rows of pin rollers type rotating support |
| CN101968075A (en) * | 2010-09-27 | 2011-02-09 | 徐州丰禾回转支承制造有限公司 | Double-volleyball slewing bearing |
-
2011
- 2011-06-14 CN CN2011101587334A patent/CN102278368A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779140Y (en) * | 2004-12-31 | 2006-05-10 | 瓦房店轴承集团有限责任公司 | Double row integrated angular contact cylindrical roller rotary supporting bearing |
| CN201568451U (en) * | 2009-12-25 | 2010-09-01 | 徐州丰禾回转支承制造有限公司 | Double rows of pin rollers type rotating support |
| CN101968075A (en) * | 2010-09-27 | 2011-02-09 | 徐州丰禾回转支承制造有限公司 | Double-volleyball slewing bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650241A (en) * | 2015-12-10 | 2016-06-08 | 刘元生 | Adjustable timing gear of engine |
| CN105715672A (en) * | 2016-04-27 | 2016-06-29 | 洛阳鸿元轴承科技有限公司 | Double-column intersecting cylindrical roller bearing |
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Application publication date: 20111214 |