CN208534975U - A kind of double ball slewing bearing of inner ring rotation - Google Patents

A kind of double ball slewing bearing of inner ring rotation Download PDF

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Publication number
CN208534975U
CN208534975U CN201820850316.3U CN201820850316U CN208534975U CN 208534975 U CN208534975 U CN 208534975U CN 201820850316 U CN201820850316 U CN 201820850316U CN 208534975 U CN208534975 U CN 208534975U
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China
Prior art keywords
ring
ring body
wear
resisting
blind hole
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CN201820850316.3U
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Chinese (zh)
Inventor
宁卢花
梁于文
魏苏亚
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LUOYANG HEAVY-DUTY BEARING Co Ltd
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LUOYANG HEAVY-DUTY BEARING Co Ltd
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Abstract

The utility model discloses a kind of double ball slewing bearings of inner ring rotation, including outer gear ring and fixed ring structure, the fixed ring structure it is mainly identical by internal diameter and coaxial arrangement main ring body, wear-resisting ring body and outer press ring are constituted, wherein the two sides of main ring body are compounded with wear-resisting ring body respectively, and the compound outer press ring in the outside of wear-resisting ring body, the main ring body, wear-resisting ring body and the compound end face for constituting fixed ring structure of outer press ring offer downwards tapered blind hole, blind hole is deep into the inside of main ring body, positioning pin is plugged in the blind hole, the one end of positioning pin outside is located at blind hole port or less, prevent from hindering the installation of other workpiece, positioning pin is the grading structure with the cooperation of tapered blind hole.The double ball slewing bearing structure of this practical use enables to rotation more stable;This is practical using compound structure, so that abrasion once occurs in use and can replace in time for wear-resisting ring body, and only needs replacing wearing part, reduces the waste of material.

Description

A kind of double ball slewing bearing of inner ring rotation
Technical field
The utility model relates to a kind of bearing, the double ball slewing bearing of specifically a kind of inner ring rotation.
Background technique
Bearing is a kind of important spare part in contemporary mechanical equipment.Its major function is to support mechanical rotary body, is reduced Coefficient of friction in its motion process.
Under the effect of certain load, bearing revolution or hourage experienced, referred to as bearing life before there is spot corrosion.
The service life of rolling bearing is with revolution (or with hourage of the work under certain revolving speed) definition: within this service life Preliminary fatigue damage (peeling or defect) should occur on its any bearing race or rolling element for bearing.However no matter in laboratory It tests or in actual use, all can significantly see, the identical bearing of the appearance under same operating condition, actual life is big It is not identical.In addition there are the bearing of several different definitions " service life ", one of them i.e. so-called " working life ", it indicates a certain Bearing accessible actual life before damage is usual not caused by fatigue by wearing, damaging, but by abrasion, corruption The reasons such as erosion, bad seals cause.
Current bearing is then scrapped completely once damaging, and the material of bearing is expensive bearing steel, therefore ten Divide waste.
Utility model content
The purpose of this utility model is to provide a kind of double ball slewing bearings of inner ring rotation, to solve above-mentioned background skill The problem of being proposed in art.
To achieve the above object, the utility model provides the following technical solutions:
A kind of double ball slewing bearing of inner ring rotation, including outer gear ring and fixed ring structure, the fixed ring structure master Will it is identical by internal diameter and coaxial arrangement main ring body, wear-resisting ring body and outer press ring constitute, wherein main ring body two sides difference it is compound There is wear-resisting ring body, and the compound outer press ring in the outside of wear-resisting ring body, the main ring body, wear-resisting ring body and the compound composition of outer press ring are solid The end face for determining ring structure offers downwards tapered blind hole, and blind hole is deep into the inside of main ring body, and positioning is plugged in the blind hole Pin, the one end of positioning pin outside are located at blind hole port hereinafter, preventing from hindering the installation of other workpiece, positioning pin be with it is tapered The grading structure of blind hole cooperation;The flange arrangement of the main ring external surface forming is fixedly connected with outer gear ring inner sidewall by screw The flange arrangement of upper forming, the outer surface of the wear-resisting ring body offer coaxial annular groove, the appearance of wear-resisting ring body Face is cased with fixed ring, offers coaxial annular groove on the inner wall of fixed ring, in the wear-resisting ring body and fixed ring The cross section of annular groove be semicircle, and several balls being arranged between wear-resisting ring body and fixed ring are slidably connected at In the circular passage of two annular grooves composition;The end of the fixed ring offers several connection screw thread holes, in order to External fixing rack structure is connected, and fixes the inner ring of ring structure for connecting rotation axis.
Further, one end end of the positioning pin outside opens up threaded hole.
Further, the through-hole for extending through annular groove, through-hole diameter etc. are opened up on the inner wall of the wear-resisting ring body In the diameter of ball, in order to which ball to be added in circular passage, while through hole match has plug, and the end of plug is provided with The cambered surface of annular groove cooperation, and plug surface offers the location hole passed through for positioning pin, plug is located at corresponding blind hole, So that plug can be fixed after finally filling in positioning pin.
Further, the outer surface of the outer press ring is connected with the snap ring for limiting fixed ring position.
Further, the inside of the fixed ring offers filling passage, and one end of filling passage is located at the end of fixed ring The other end in portion, filling passage is located in annular groove.
Further, multiple aluminium alloy flabellums are welded on the inner sidewall of the outer gear ring.
Further, correspondence offers keyway on the inner wall of the fixed ring structure, and wherein main ring body and outer press ring are located at The position of keyway opens up threaded hole in order to connecting key.
Compared with prior art, the utility model has the beneficial effects that
The double ball slewing bearing structure of this practical use enables to rotation more stable;This is practical using compound Structure so that abrasion once occurs in use and can replace in time for wear-resisting ring body, and only needs replacing wearing part i.e. Can, reduce the waste of material.
This practical aluminium alloy flabellum can be rotated with outer gear ring, so that flow perturbation, can radiate to fixed ring, Because fixed ring is contacted with ball, a large amount of heat can be generated in high speed and high pressure rotation process, improved the service life of bearing, avoided Long-time hot operation causes surface material denaturation to wear.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double ball slewing bearing of inner ring rotation.
Fig. 2 is the structural schematic diagram in Fig. 1 at A.
Fig. 3 is the structural schematic diagram in Fig. 1 at B.
In figure: 1, outer gear ring;2, main ring body;3, wear-resisting ring body;4, outer press ring;5, keyway;6, threaded hole;7, fixed ring knot Structure;8, aluminium alloy flabellum;9, screw;10, filling passage;11, snap ring;12, positioning pin;13, ball;14, fixed ring;15, it blocks up Head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1~3, in the utility model embodiment, a kind of double ball slewing bearing of inner ring rotation, including external tooth Circle 1 and fixed ring structure 7, the fixed ring structure 7 is mainly identical by internal diameter and main ring body 2,3 and of wear-resisting ring body of coaxial arrangement Outer press ring 4 is constituted, and wherein the two sides of main ring body 2 are compounded with wear-resisting ring body 3 respectively, and the compound external pressure in the outside of wear-resisting ring body 3 Ring 4, the main ring body 2, wear-resisting ring body 3 and the compound end face for constituting fixed ring structure 7 of outer press ring 4 offer downwards tapered blind Hole, blind hole are deep into the inside of main ring body 2, and positioning pin 12 is plugged in the blind hole, and positioning pin 12 is located at towards external one end Hereinafter, preventing from hindering the installation of other workpiece, positioning pin 12 is the grading structure with the cooperation of tapered blind hole for blind hole port, in order to The exhaust being interference fitted in installation process.
The positioning pin 12 opens up threaded hole towards external one end end, realizes lengthening in order to be threadedly coupled screw, To facilitate external tool aid to draw out positioning pin 12.
The flange arrangement of 2 outer surface of main ring body forming is fixedly connected by screw 9 to be shaped on 1 inner sidewall of outer gear ring Flange arrangement, the outer surface of the wear-resisting ring body 3 offer coaxial annular groove, and the outer surface of wear-resisting ring body 3 covers There is fixed ring 14, offer coaxial annular groove on the inner wall of fixed ring 14, in the wear-resisting ring body 3 and fixed ring 14 The cross section of annular groove be semicircle, and several balls 13 sliding being arranged between wear-resisting ring body 3 and fixed ring 14 It is connected in the circular passage of two annular grooves composition, main ring body 2 is rotated relative to fixed ring 14;It needs herein Bright book, the internal diameter of fixed ring 14 is identical as the outer diameter of wear-resisting ring body 3, guarantee 14 sets of fixed ring behind wear-resisting 3 outside of ring body, Ball can support fixed ring 14 and wear-resisting ring body 3.
The through-hole for extending through annular groove is opened up on the inner wall of the wear-resisting ring body 3, through-hole diameter is equal to ball 13 Diameter, in order to which ball 13 is added in circular passage, at the same through hole match have plug 15, the end of plug 15 is provided with The cambered surface of annular groove cooperation, and 15 surface of plug offers the location hole passed through for positioning pin 12, plug 15 is located at corresponding At blind hole, so that can fix plug 15 after finally filling in positioning pin, prevent ball 13 from leaking out.
The outer surface of the outer press ring 4 is connected with the snap ring 11 for limiting 14 position of fixed ring, and snap ring 11 does not influence solid Determine the rotation of ring 14.
The end of the fixed ring 14 offers several connection screw thread holes, in order to connect external fixed bracket knot Structure, and the inner ring for fixing ring structure 7 is used to connect rotation axis, the double ball slewing bearing structure of this practical use enables to It rotates more stable.
The inside of the fixed ring 14 offers filling passage 10, and one end of filling passage 10 is located at the end of fixed ring 14 The other end in portion, filling passage 10 is located in annular groove, so that end adds lubricating oil to be able to enter the movement of ball Face, filling passage 10 are by punching from both direction and being connected to formation.
Multiple aluminium alloy flabellums 8 are welded on the inner sidewall of the outer gear ring 1, aluminium alloy flabellum 8 can be 1 turn with outer gear ring It is dynamic, so that flow perturbation, can radiate to fixed ring 14, because fixed ring 14 is contacted with ball, high speed and high pressure was rotated Cheng Zhonghui generates a large amount of heat, improves the service life of bearing, avoids long-time hot operation, and surface material denaturation is caused to occur Abrasion, the size determine according to actual needs of aluminium alloy flabellum 8, while needing reserved space.
Correspondence offers keyway 5 on the inner wall of the fixed ring structure 7, and wherein main ring body 2 and outer press ring 4 are located at keyway 5 Position open up threaded hole 6 in order to connecting key, realize and be stably connected with axis, this is the prior art, is not repeated them here.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (7)

1. a kind of double ball slewing bearing of inner ring rotation, including outer gear ring (1) and fixation ring structure (7), which is characterized in that institute State main ring body (2), wear-resisting ring body (3) and outer press ring (4) structure that fixed ring structure (7) is mainly identical by internal diameter and is coaxially disposed At wherein the two sides of main ring body (2) are compounded with wear-resisting ring body (3) respectively, and the compound outer press ring in outside of wear-resisting ring body (3) (4), the main ring body (2), wear-resisting ring body (3) and the compound end face for constituting fixed ring structure (7) of outer press ring (4) offer downwards Tapered blind hole, blind hole are deep into the inside of main ring body (2), are plugged in the blind hole positioning pin (12), positioning pin (12) direction External one end is located at blind hole port hereinafter, preventing from hindering the installation of other workpiece, and positioning pin (12) is cooperated with tapered blind hole Grading structure;The flange arrangement of main ring body (2) the outer surface forming is fixedly connected on the inside of outer gear ring (1) by screw (9) The outer surface of the flange arrangement shaped on wall, the wear-resisting ring body (3) offers coaxial annular groove, wear-resisting ring body (3) outer surface is cased with fixed ring (14), and coaxial annular groove is offered on the inner wall of fixed ring (14), described resistance to The cross section of bull ring body (3) and the annular groove in fixed ring (14) is semicircle, and wear-resisting ring body (3) and fixed ring (14) Between several balls (13) for being arranged be slidably connected in the circular passage of two annular grooves composition;The fixed ring (14) End offer several connection screw thread holes, in order to connect external fixing rack structure, and fix the interior of ring structure (7) Circle is for connecting rotation axis.
2. the double ball slewing bearing of inner ring according to claim 1 rotation, the positioning pin (12) outside one End end opens up threaded hole.
3. the double ball slewing bearing of inner ring according to claim 1 rotation, opened up on the inner wall of the wear-resisting ring body (3) One extends through the through-hole of annular groove, and through-hole diameter is equal to the diameter of ball (13), in order to which ball (13) is added to ring In shape channel, while through hole match has plug (15), and the end of plug (15) is provided with the cambered surface of annular groove cooperation, and plug (15) surface offers the location hole passed through for positioning pin (12), and plug (15) is located at corresponding blind hole, so that finally Plug (15) can be fixed after filling in positioning pin.
4. the double ball slewing bearing of inner ring rotation according to claim 1, the outer surface of the outer press ring (4) is connected with For limiting the snap ring (11) of fixed ring (14) position.
5. the double ball slewing bearing of inner ring rotation according to claim 1 or 4, the inside of the fixed ring (14) is opened up Have filling passage (10), one end of filling passage (10) is located at the end of fixed ring (14), the other end position of filling passage (10) In in annular groove.
6. the double ball slewing bearing of inner ring according to claim 1 rotation, welded on the inner sidewall of the outer gear ring (1) Multiple aluminium alloy flabellums (8).
It is right on the inner wall of the fixed ring structure (7) 7. the double ball slewing bearing of inner ring according to claim 1 rotation Keyway (5) should be offered, the position that wherein main ring body (2) and outer press ring (4) are located at keyway (5) opens up threaded hole in order to connect Key.
CN201820850316.3U 2018-06-04 2018-06-04 A kind of double ball slewing bearing of inner ring rotation Active CN208534975U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820850316.3U CN208534975U (en) 2018-06-04 2018-06-04 A kind of double ball slewing bearing of inner ring rotation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820850316.3U CN208534975U (en) 2018-06-04 2018-06-04 A kind of double ball slewing bearing of inner ring rotation

Publications (1)

Publication Number Publication Date
CN208534975U true CN208534975U (en) 2019-02-22

Family

ID=65381124

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820850316.3U Active CN208534975U (en) 2018-06-04 2018-06-04 A kind of double ball slewing bearing of inner ring rotation

Country Status (1)

Country Link
CN (1) CN208534975U (en)

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