CN112696428B - Slewing bearing - Google Patents
Slewing bearing Download PDFInfo
- Publication number
- CN112696428B CN112696428B CN202011524328.5A CN202011524328A CN112696428B CN 112696428 B CN112696428 B CN 112696428B CN 202011524328 A CN202011524328 A CN 202011524328A CN 112696428 B CN112696428 B CN 112696428B
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- Prior art keywords
- annular
- inner ring
- oil
- slewing bearing
- balls
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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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
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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
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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
- F16C33/66—Special parts or details in view of lubrication
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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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a slewing bearing which comprises an inner ring and an outer ring which are coaxially arranged, wherein the outer circumferential side surface of the inner ring is inwards sunken along the radial direction to form a first annular groove, the inner circumferential side surface of the outer ring is outwards sunken along the proceeding direction to form a second annular groove, a plurality of balls are rotatably arranged in the first annular groove, at least part of the balls are rotatably clamped in the second annular groove, so that the outer ring can rotate by taking the axis of the inner ring as a shaft, an oil pipe is fixed in each ball, a first branch pipe positioned in each ball is fixed on each oil pipe, an annular pipeline is further fixed in each inner ring, at least part of each oil pipe extends out of each ball and is communicated with the oil pipe through the second branch pipe, and an oil nozzle communicated with the annular pipeline is further fixed on the inner side surface of the inner ring. The problem of current slewing bearing inconvenient refuels the operation to inside rolling element for lubricating oil can not effectively reach each rolling element on, makes lubricated effect descend is solved.
Description
Technical Field
The invention relates to a mechanical part, in particular to a slewing bearing.
Background
The slewing bearing is widely applied, and the engineering machinery is the initial application of the slewing bearing and is also the most widely applied place, such as an earth moving machine, an excavator, a disintegrator, a stacker-reclaimer, a grader, a road roller, a dynamic compactor, a rock drilling machine, a heading machine and the like. The slewing bearing is a novel mechanical part and comprises an inner ring, an outer ring, a rolling body and the like, and is a large bearing capable of bearing comprehensive loads and simultaneously bearing larger axial and radial loads and overturning moments. Because the work load of the slewing bearing is large, the abrasion among all parts of the slewing bearing is serious, the abrasion can reduce the work performance of the slewing bearing and generate large noise, the lubrication of all parts of the slewing bearing, namely the internal rolling elements, becomes particularly important, the existing slewing bearing is inconvenient to carry out oil filling operation on the internal rolling elements, so that the lubricating oil cannot effectively reach all the rolling elements, and the lubricating effect is reduced.
Disclosure of Invention
The invention aims to provide a slewing bearing, which solves the problems that the conventional slewing bearing is inconvenient to refuel internal rolling elements, so that lubricating oil cannot effectively reach all the rolling elements, and the lubricating effect is reduced.
In order to achieve the above object, the present invention provides a slewing bearing, which comprises an inner ring and an outer ring which are coaxially arranged, wherein a first annular groove is formed on the outer circumferential side surface of the inner ring and is recessed inwards along the radial direction of the inner ring, a second annular groove is formed on the inner circumferential side surface of the outer ring and is recessed outwards along the proceeding direction of the outer ring, a plurality of balls are rotatably arranged in the first annular groove, the balls are at least partially rotatably clamped in the second annular groove, so that the outer ring can rotate around the axis of the inner ring, an oil pipe is fixed in the balls, so that the balls can rotate around the oil pipe, a first branch pipe positioned in the balls is fixed on the oil pipe, oil outlet holes are arranged on the surfaces of the balls, the first branch pipe is communicated with the oil holes, and an annular pipeline is also fixed in the inner ring, the oil pipe at least partially extends out of the ball and is communicated with the oil pipe through a second branch pipe, and an oil nozzle communicated with the annular pipeline is further fixed on the inner side surface of the inner ring.
Preferably, a bearing is fixed in the first annular groove, the oil pipe is at least partially clamped in the bearing in a rotatable mode, and the end portion of the second branch pipe penetrates through the bearing and at least partially extends into the oil pipe.
Preferably, the bearing is a sealed bearing.
Preferably, the outer side surface of the oil pipe is provided with an annular key, the inner ring of the bearing is provided with an annular key groove, and the annular key is clamped in the annular key groove.
Preferably, the number of the first branch pipes is not less than 2, and multiple groups of the first branch pipes are distributed around the circumferential side face of the oil pipe at equal angles.
Preferably, an annular sliding groove is formed in the upper surface of the inner ring in a downward recessed manner, an annular clamping portion is arranged at an opening of the second annular groove, and the annular clamping portion is rotatably clamped in the sliding groove.
Preferably, the slewing bearing further comprises a base, and the base is connected with the inner ring through a plurality of support rods.
Preferably, an annular tooth structure is formed on the circumferential side surface of the outer ring, a motor is fixed on the base, a driving gear is coaxially fixed on an output shaft of the motor, and the driving gear is meshed with the annular tooth structure.
Preferably, a controller electrically connected with the motor is further arranged on the base.
The invention provides a slewing bearing which comprises an inner ring and an outer ring which are coaxially arranged, wherein the outer circumferential side surface of the inner ring is inwards sunken along the radial direction to form a first annular groove, the inner circumferential side surface of the outer ring is outwards sunken along the proceeding direction to form a second annular groove, a plurality of balls are rotatably arranged in the first annular groove, at least part of the balls are rotatably clamped in the second annular groove, so that the outer ring can rotate by taking the axis of the inner ring as a shaft, an oil pipe is fixed in the balls, so that the balls and the oil pipe can rotate by taking the axis as a shaft, a first branch pipe positioned in the balls is fixed on the oil pipe, oil outlet holes are formed in the surfaces of the balls, the first branch pipe is communicated with an oil hole, an annular pipeline is also fixed in the inner ring, and at least part of the oil pipe extends out of the balls, the oil pipe is communicated with the oil pipe through a second branch pipe, and an oil nozzle communicated with the annular pipeline is further fixed on the inner side surface of the inner ring; when adding lubricating oil, dock oil pipe and glib talker, lubricating oil gets into to the ring channel in from the glib talker to reach the oil pipe in the ball through every second branch pipe in, and trickle to the surface of ball from first branch pipe, in the operation of refueling, can rotate the outer lane, make every ball be in the rotating condition, make lubricating oil can distribute the surface of every ball, not only make things convenient for the interpolation of lubricating oil, also can improve lubricated effect simultaneously.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of a pivoting support provided by the present invention;
FIG. 2 is a top view of a slew bearing provided by the present invention;
FIG. 3 is a side view of a slew bearing provided by the present invention;
FIG. 4 is a schematic view of a ball bearing of the present invention;
fig. 5 is a structural diagram of a bearing in a slewing bearing provided by the present invention.
Description of the reference numerals
1-base 2-support bar
3-ring tooth structure 4-ball
5-motor 6-output shaft
7-drive gear 8-inner ring
9-chute 10-outer ring
11-bearing 12-oil pipe
13-first branch 14-nozzle tip
15-annular duct 16-second branch
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1-5: the invention provides a slewing bearing, which comprises an inner ring 8 and an outer ring 10 which are coaxially arranged, wherein the outer circumferential side surface of the inner ring 8 is inwards recessed along the radial direction to form a first annular groove, the inner circumferential side surface of the outer ring 10 is outwards recessed along the proceeding direction to form a second annular groove, a plurality of balls 4 are rotatably arranged in the first annular groove, at least part of the balls 4 are rotatably clamped in the second annular groove, so that the outer ring 10 can rotate by taking the axis of the inner ring 8 as a shaft, an oil pipe 12 is fixed in each ball 4, so that the balls 4 and the oil pipe 12 can rotate by taking the axis as a shaft, a first branch pipe 13 positioned in each ball 4 is fixed on each oil pipe 12, oil outlets are arranged on the surfaces of the balls 4, the first branch pipes 13 are communicated with oil holes, an annular pipeline 15 is also fixed in the inner ring 8, the oil pipe 12 at least partially extends out of the ball 4 and is communicated with the oil pipe 12 through a second branch pipe 16, and an oil nozzle 14 communicated with the annular pipeline 15 is further fixed on the inner side surface of the inner ring 8. When adding lubricating oil, dock oil pipe and glib talker, lubricating oil gets into to the ring channel in from the glib talker to in arriving the oil pipe in the ball through every second branch pipe, and trickle to the surface of ball from first branch pipe, in the operation of refueling, can rotate the outer lane, make every ball be in the rotation state, make lubricating oil can distribute the surface of every ball, not only make things convenient for the interpolation of lubricating oil, also can improve lubricated effect simultaneously.
In a preferred embodiment of the present invention, in order to allow the balls to smoothly rotate and allow the oil in the second branch pipe to smoothly flow into the oil pipe, a bearing 11 is fixed in the first annular groove, the oil pipe 12 is at least partially rotatably engaged in the bearing 11, and an end of the second branch pipe 16 penetrates through the bearing 11 and at least partially extends into the oil pipe 12.
In a preferred embodiment of the invention, the bearing 11 is a sealed bearing in order to increase the sealing.
In a preferred embodiment of the present invention, in order to effectively engage the oil pipe with the inner ring of the bearing, an annular key is provided on the outer side surface of the oil pipe 12, and an annular key groove is provided on the inner ring of the bearing 11, and the annular key is engaged with the annular key groove.
In a preferred embodiment of the present invention, in order to improve the lubricating effect, the number of the first branch pipes 13 is not less than 2, and a plurality of groups of the first branch pipes 13 are distributed around the circumferential side of the oil pipe 12 at equal angles.
In a preferred embodiment of the present invention, in order to enable the outer ring and the inner ring to be engaged and rotated with each other, an annular sliding groove 9 is formed on the upper surface of the inner ring 8 in a downward recessed manner, and an annular engaging portion is provided at an opening of the second annular groove, and is rotatably engaged in the sliding groove 9.
In a preferred embodiment of the present invention, the slewing bearing further comprises a base 1, and the base 1 is connected with the inner ring 8 through a plurality of support rods 2.
In a preferred embodiment of the present invention, in order to rotate the outer ring, an annular tooth structure 3 is formed on a circumferential side surface of the outer ring 10, a motor 5 is fixed on the base 1, a driving gear 7 is coaxially fixed on an output shaft 6 of the motor 5, and the driving gear 7 is engaged with the annular tooth structure 3.
In a preferred embodiment of the present invention, in order to control the rotation speed and the rotation direction of the motor, a controller electrically connected to the motor 5 is further disposed on the base 1.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, any combination of the various embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present invention is not violated.
Claims (9)
1. A slewing bearing is characterized by comprising an inner ring (8) and an outer ring (10) which are coaxially arranged, wherein the outer circumferential side surface of the inner ring (8) is inwards recessed along the radial direction to form a first annular groove, the inner circumferential side surface of the outer ring (10) is outwards recessed along the radial direction to form a second annular groove, a plurality of balls (4) are rotatably arranged in the first annular groove, the balls (4) are at least partially rotatably clamped in the second annular groove, so that the outer ring (10) can rotate by taking the axis of the inner ring (8) as an axis, oil pipes (12) are fixedly arranged in the balls (4), so that the balls (4) can rotate by taking the oil pipes (12) as the axis, first branch pipes (13) positioned in the balls (4) are fixedly arranged on the oil pipes (12), oil outlet holes are formed in the surfaces of the balls (4), the oil outlet hole is communicated with the first branch pipe (13), an annular pipeline (15) is further fixed inside the inner ring (8), at least part of the oil pipe (12) extends out of the ball (4) and is communicated with the oil pipe (12) through a second branch pipe (16), and an oil nozzle (14) communicated with the annular pipeline (15) is further fixed on the inner side face of the inner ring (8).
2. A slewing bearing according to claim 1, characterized in that a bearing (11) is fixed in the first annular groove, the oil pipe (12) is at least partly rotatably clamped in the bearing (11), and the end of the second branch pipe (16) extends through the bearing (11) and at least partly into the oil pipe (12).
3. A slewing bearing according to claim 2, characterized in that the bearing (11) is a sealed bearing.
4. A slewing bearing according to claim 3, characterized in that the outer side of the oil pipe (12) is provided with an annular key and the inner ring of the bearing (11) is provided with an annular key groove in which the annular key is snapped.
5. A slewing bearing according to claim 4, characterized in that the number of the first branch pipes (13) is not less than 2 groups, and a plurality of groups of the first branch pipes (13) are distributed around the circumferential side of the oil pipe (12) at equal angles.
6. A slewing bearing according to claim 1, wherein the upper surface of the inner ring (8) is recessed downwards to form an annular sliding groove (9), and an annular clamping part is arranged at the opening of the second annular groove and is rotatably clamped in the sliding groove (9).
7. A slewing bearing according to claim 1, characterized in that the slewing bearing further comprises a base (1), which base (1) is connected to the inner ring (8) by means of a number of support bars (2).
8. A slewing bearing according to claim 7, characterized in that the circumferential side of the outer ring (10) is formed with an annular tooth structure (3), a motor (5) is fixed on the base (1), a driving gear (7) is coaxially fixed on the output shaft (6) of the motor (5), and the driving gear (7) is meshed with the annular tooth structure (3).
9. A slewing bearing according to claim 8, characterized in that a controller electrically connected with the motor (5) is also arranged on the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524328.5A CN112696428B (en) | 2020-12-22 | 2020-12-22 | Slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524328.5A CN112696428B (en) | 2020-12-22 | 2020-12-22 | Slewing bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112696428A CN112696428A (en) | 2021-04-23 |
| CN112696428B true CN112696428B (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011524328.5A Active CN112696428B (en) | 2020-12-22 | 2020-12-22 | Slewing bearing |
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| Country | Link |
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| CN (1) | CN112696428B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061745B (en) * | 2021-11-16 | 2022-10-21 | 徐州健川机械制造有限公司 | Slewing bearing debugging mechanism |
| CN115770666A (en) * | 2022-12-29 | 2023-03-10 | 北矿机电科技有限责任公司 | Bubble scraping device of flotation machine |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6408396A (en) * | 1963-07-29 | 1965-02-01 | ||
| JP2002013540A (en) * | 2000-06-30 | 2002-01-18 | Thk Co Ltd | Double row slewing bearing |
| US6511228B2 (en) * | 2001-05-08 | 2003-01-28 | Pratt & Whitney Canada Corp. | Oil annulus to circumferentially equalize oil feed to inner race of a bearing |
| JP4066136B2 (en) * | 2001-11-29 | 2008-03-26 | 日本精工株式会社 | Rolling bearing |
| JP5181953B2 (en) * | 2008-09-12 | 2013-04-10 | 日本精工株式会社 | Ball bearing |
| CN201902457U (en) * | 2010-12-11 | 2011-07-20 | 江苏瑞特回转支承有限公司 | Slewing bearing |
| WO2012176334A1 (en) * | 2011-06-24 | 2012-12-27 | 三菱電機株式会社 | Reduction gear device and bearing |
| JP2015010651A (en) * | 2013-06-28 | 2015-01-19 | 株式会社ジェイテクト | Roller bearing |
| US9631673B2 (en) * | 2015-08-24 | 2017-04-25 | Samuel Messinger | Stationary bearing race with uniform distribution of wear |
| CN205244146U (en) * | 2015-12-21 | 2016-05-18 | 中船重工(重庆)海装风电设备有限公司 | Waste discharge wind turbine generator system driftage floating bearing of fat of outer lane |
| CN206655916U (en) * | 2017-03-06 | 2017-11-21 | 洛阳高精机械制造有限公司 | A kind of spherical roller |
| CN207848214U (en) * | 2018-01-04 | 2018-09-11 | 徐州徐工挖掘机械有限公司 | A kind of dredger pivoting support |
| CN209195948U (en) * | 2018-11-21 | 2019-08-02 | 浙江辛子精工机械股份有限公司 | Pivoting support |
| CN210419121U (en) * | 2019-07-02 | 2020-04-28 | 东莞共荣精密机械有限公司 | Slewing bearing that fork truck used |
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2020
- 2020-12-22 CN CN202011524328.5A patent/CN112696428B/en active Active
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| CN112696428A (en) | 2021-04-23 |
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