CN104061243A - Rotary support of excavator - Google Patents
Rotary support of excavator Download PDFInfo
- Publication number
- CN104061243A CN104061243A CN201410244912.3A CN201410244912A CN104061243A CN 104061243 A CN104061243 A CN 104061243A CN 201410244912 A CN201410244912 A CN 201410244912A CN 104061243 A CN104061243 A CN 104061243A
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- CN
- China
- Prior art keywords
- ring
- outer ring
- inner ring
- end surface
- revolution
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- Component Parts Of Construction Machinery (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a rotary support of an excavator. The rotary support comprises an inner ring and an outer ring, and is characterized in that two steps are formed in the upper end surface of the inner ring and the lower end surface of the outer ring respectively; the size of each step satisfies the following inequality: 0 <= A <= 90, wherein the A is the angle of each step. By adopting the structure, the radial motion of annular rubber seal rings can be prevented by virtue of the steps formed in the upper end surface of the inner ring and the lower end surface of the outer ring, so that when the rotary support of the excavator rotates, the rubber seal rings are unlikely to fall off, lubricating grease is guaranteed not leaking out and the abrasion of the inner and outer rings to a roller body is alleviated, thus the service life of the rotary support is prolonged and meanwhile the safety of the machine during operation is guaranteed.
Description
Technical field
The present invention relates to a kind of pivoting support field, be specifically related to a kind of digger revolving supporting.
Background technique
Pivoting support is applied very extensive in modern industry, is called as " joint of machine ", is between two articles, to need to do relative rotation motion, needs again to bear the necessary important transmission part of machinery of axial force, radial force, tilting moment simultaneously.Along with developing rapidly of machinery industry, pivoting support is widely used in industries such as ship equipment, engineering machinery, light industry and machinery, metallurgical machinery, medical machinery, industrial machineries.
The pivoting support lubricating grease of having annotated in raceway in the time that assembling is dispatched from the factory, under general work condition, pivoting support will be according to supplemental lubrication fat service cycle, and now rubber weather strip is being born the effect that foreign matters such as stoping lubricating grease is excessive, external dust enters pivoting support inside., after long time running, can there is rubber weather strip to shrink to depart from the phenomenons such as groove, lubricating grease be excessive in the pivoting support product of conventional design and production.In prior art, " a kind of digger revolving supporting " (Chinese patent: 200920186462.1) disclosed revolution is supported, it comprises Internal and external cycle, rolling element and seal ring, but this revolution is supported in turning course, and rubber weather strip easily comes off, cause lubricating grease excessive, be to reduce the actual life that revolution is supported, also can reduce the Security of machinery in operation process simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of digger revolving supporting, it is in turning course, and rubber weather strip difficult drop-off, ensures that lubricating grease is not excessive, and then improve the actual life that revolution is supported, also can ensure the Security of machinery in operation process simultaneously.
For solving the problems of the technologies described above, a kind of excavator provided by the invention supports with revolution, comprise inner ring and outer ring, outer ring sleeve is in inner ring outside, between the fitting surface of outer ring and inner ring, include ring raceway, in ring raceway, be distributed with multiple steel balls along raceway circular array, between the fitting surface of outer ring and inner ring, also include the annular groove that is positioned at ring raceway outside, in annular groove, be provided with the ring-shaped rubber Stamping Steel Ribbon matching, the outside of outer ring includes the oil nozzle with pipeline, the inwall of inner ring is provided with gear ring, it is domatic that the upper and lower end face of gear ring is respectively provided with a circular slanting, on described inner ring upper-end surface and the lower end surface of outer ring, be respectively provided with a step, and the size of step meets inequality: 0<A<90, angle that wherein A is step (°).
The surface roughness at described step surface B place is Ra1.6, so just can reduce the wearing and tearing of ring-shaped rubber Stamping Steel Ribbon in the time that step turns round, thereby is conducive to protect the complete of annular rubber weather strip.
The angle A of described step is 45 °, is conducive to like this processing of step.
Adopt after such structure, the step arranging on the lower end surface of inner ring upper-end surface and outer ring just can stop moving radially of ring-shaped rubber Stamping Steel Ribbon, this just makes this revolution be supported in turning course, rubber weather strip difficult drop-off, ensure that lubricating grease is not excessive, reduce the wearing and tearing of Internal and external cycle to rolling element, and then improve the actual life that revolution is supported, also can ensure the Security of machinery in operation process simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation that excavator of the present invention supports with revolution;
Fig. 2 is the enlarged diagram at C place;
Fig. 3 is the enlarged diagram at D place.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
A kind of digger revolving supporting as shown in Figure 1, this revolution is supported and is comprised inner ring 7 and outer ring 2, outer ring 2 is enclosed within inner ring 7 outsides, between the fitting surface of outer ring 2 and inner ring 7, include ring raceway 5, in ring raceway 5, be distributed with multiple steel balls 8 along raceway circular array, between the fitting surface of outer ring 2 and inner ring 7, also include the annular groove 3 that is positioned at ring raceway 5 outsides, in annular groove 3, be provided with the ring-shaped rubber Stamping Steel Ribbon 4 matching, the outside of outer ring 2 includes the oil nozzle 1 with pipeline, the inwall of inner ring 7 is provided with gear ring 6, it is domatic that the upper and lower end face of gear ring 6 is respectively provided with a circular slanting, on the lower end surface of inner ring 7 upper-end surfaces and outer ring 2, be respectively provided with a step, and the size of step meets inequality: 0<A<90, angle that wherein A is step (°).In the present invention, the surface roughness at step surface B place is Ra1.6, so just can reduce the wearing and tearing of ring-shaped rubber Stamping Steel Ribbon in the time that step turns round, thereby is conducive to protect the complete of annular rubber weather strip.The angle A of step is 45 °, is conducive to like this processing of step.
Fig. 2 shows the step being arranged on inner ring 7.
Fig. 3 shows the step being arranged on outer ring 2.
The invention has the beneficial effects as follows: the step arranging on the lower end surface of inner ring 7 upper-end surfaces and outer ring 2 just can stop moving radially of ring-shaped rubber Stamping Steel Ribbon 4, this just makes this revolution be supported in turning course, rubber weather strip 4 difficult drop-offs, ensure that lubricating grease is not excessive, reduce Internal and external cycle 7, the wearing and tearing of 2 pairs of steel balls 8, and then improve the actual life that revolution is supported, also can ensure the Security of machinery in operation process simultaneously.
Above the present invention and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited to this.If generally speaking those of ordinary skill in the art is enlightened by it, in the situation that not departing from the invention aim, design the mode of structure level embodiment similar to this technological scheme without creationary, all belong to protection scope of the present invention.
Claims (3)
1. an excavator supports with revolution, comprise inner ring and outer ring, outer ring sleeve is in inner ring outside, between the fitting surface of outer ring and inner ring, include ring raceway, in ring raceway, be distributed with multiple steel balls along raceway circular array, between the fitting surface of outer ring and inner ring, also include the annular groove that is positioned at ring raceway outside, in annular groove, be provided with the ring-shaped rubber Stamping Steel Ribbon matching, the outside of outer ring includes the oil nozzle with pipeline, the inwall of inner ring is provided with gear ring, and it is domatic that the upper and lower end face of gear ring is respectively provided with a circular slanting; It is characterized in that: on described inner ring upper-end surface and the lower end surface of outer ring, be respectively provided with a step, and the size of step meets inequality: 0<A<90, angle that wherein A is step (°).
2. a kind of excavator according to claim 1 supports with revolution, it is characterized in that: the surface roughness at described step surface B place is Ra1.6.
3. a kind of excavator according to claim 1 supports with revolution, it is characterized in that: the angle A of described step is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244912.3A CN104061243A (en) | 2014-06-04 | 2014-06-04 | Rotary support of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244912.3A CN104061243A (en) | 2014-06-04 | 2014-06-04 | Rotary support of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104061243A true CN104061243A (en) | 2014-09-24 |
Family
ID=51549111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410244912.3A Pending CN104061243A (en) | 2014-06-04 | 2014-06-04 | Rotary support of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104061243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979231A (en) * | 2017-05-17 | 2017-07-25 | 广西玉柴重工有限公司 | A kind of pivoting support dovetail groove sealing strip lip protection structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353560A (en) * | 2003-05-29 | 2004-12-16 | Nsk Ltd | Rotation support device for throttle valve devices |
| 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 |
| CN201582301U (en) * | 2009-12-16 | 2010-09-15 | 常州市南港港口机械有限公司 | Weighted rotary bearing |
| CN201588874U (en) * | 2009-12-22 | 2010-09-22 | 常州市南港港口机械有限公司 | Turntable bearing with three rows of cylindrical rollers |
| CN102734320A (en) * | 2012-06-11 | 2012-10-17 | 常州市南港港口机械有限公司 | Slewing bearing with three rows of rollers |
| CN202690766U (en) * | 2012-04-23 | 2013-01-23 | 谢夫勒科技股份两合公司 | Pivoting support structure |
| CN203979154U (en) * | 2014-06-04 | 2014-12-03 | 安徽省宁国顺昌机械有限公司 | A kind of excavator supports with revolution |
-
2014
- 2014-06-04 CN CN201410244912.3A patent/CN104061243A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353560A (en) * | 2003-05-29 | 2004-12-16 | Nsk Ltd | Rotation support device for throttle valve devices |
| 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 |
| CN201582301U (en) * | 2009-12-16 | 2010-09-15 | 常州市南港港口机械有限公司 | Weighted rotary bearing |
| CN201588874U (en) * | 2009-12-22 | 2010-09-22 | 常州市南港港口机械有限公司 | Turntable bearing with three rows of cylindrical rollers |
| CN202690766U (en) * | 2012-04-23 | 2013-01-23 | 谢夫勒科技股份两合公司 | Pivoting support structure |
| CN102734320A (en) * | 2012-06-11 | 2012-10-17 | 常州市南港港口机械有限公司 | Slewing bearing with three rows of rollers |
| CN203979154U (en) * | 2014-06-04 | 2014-12-03 | 安徽省宁国顺昌机械有限公司 | A kind of excavator supports with revolution |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979231A (en) * | 2017-05-17 | 2017-07-25 | 广西玉柴重工有限公司 | A kind of pivoting support dovetail groove sealing strip lip protection structure |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140924 |