CN106369064A - Sealing device and bearing device having the same - Google Patents
Sealing device and bearing device having the same Download PDFInfo
- Publication number
- CN106369064A CN106369064A CN201610586196.6A CN201610586196A CN106369064A CN 106369064 A CN106369064 A CN 106369064A CN 201610586196 A CN201610586196 A CN 201610586196A CN 106369064 A CN106369064 A CN 106369064A
- Authority
- CN
- China
- Prior art keywords
- lip
- ring
- sealing device
- sealing lip
- inner ring
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
- B21B31/078—Sealing devices
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- 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
- F16C19/34—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 both radial and axial load
- F16C19/38—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 both radial and axial load with two or more rows of rollers
-
- 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
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/24—Hydrostatic bearings or guides
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Abstract
The invention provides a sealing device and a bearing device having the same. The sealing device disposed at axial external two ends of an external ring (3) in the bearing device including the external ring (3) and an inner ring (4) is provided with a main sealing lip (7) in contact with the external periphery of the inner ring (4), and an auxiliary sealing lip (8) disposed at the axial inside of the main sealing lip (7) and being not in contact with the external periphery of the inner ring (4). Through the external periphery of the inner ring (4), the main sealing lip (7) and the auxiliary sealing lip (8), a lubricating grease storage part (10) capable of storing lubricating grease is formed. A plurality of guide parts are formed along the circumferential direction on at least one of a radial external side surface (8b) and a radial inner side surface (8c) of the auxiliary sealing lip (8), and can allow the lubricating grease attached to the corresponding surface to flow along the axial direction.
Description
Technical field
The present invention relates to sealing device and the bearing arrangement possessing this sealing device.More specifically, it is related to for example roll
The sealing device being used for the bearing arrangement that roller is supported of machine and the bearing arrangement employing this sealing device.
Background technology
How the sealing device of the roll neck bearing of the roll mill of iron and steel compares general sealing device in harsh condition
Lower use.That is, the peripheral speed of lip is up to 30m/s (mill speed: 2800mpm), and, environment temperature such as 60～
Repeatedly change in 120 DEG C of such wide temperature ranges.Additionally, being persistently immersed in rolling water (cooling water).
Even if in order to such harsh under conditions of also ensure that the sealing property of sealing, by inner ring and with this inner ring
Outer peripheral face carry out the gap between the lip of sliding contact lubricating status maintain into Liquid Lubrication Condition situation most important.Change
Yan Zhi, needs to consistently form oil film in the sliding contact portion of lip in advance.In order to form above-mentioned oil film, proposed various sealings in the past
Device (for example, referring to Japanese Unexamined Patent Publication 59-34121～Japanese Unexamined Patent Publication 2014-173686).
In the bearing arrangement that Japanese Unexamined Patent Publication 59-34121 is recorded, as shown in fig. 6, being slided with inner ring 50 to maintain
The lubricating status of the sealed lip 51 of dynamic contact, separately arrange secondary sealing lip 52 with sealed lip 51, to being formed at inner ring
Space s filling grease between 50 outer peripheral face 50a and sealed lip 51 and secondary sealing lip 52.
And, in the bearing arrangement that Japanese Unexamined Patent Publication 2014-173686 records, as shown in fig. 7, comparing and inner ring 60
The primary seal lip 61 that outer peripheral face 60a carries out sliding contact leans on the inner ring outer peripheral face of axially inner side to form the lubrication accumulating grease
Fat accumulates groove 62.
In the bearing arrangement that Japanese Unexamined Patent Publication 59-34121～Japanese Unexamined Patent Publication 2014-173686 records, from Bearing inner
Accumulate groove 62 (Japanese Unexamined Patent Publication 2014-173686) supply lubrication to described space s (Japanese Unexamined Patent Publication 59-34121) or grease
Fat, this grease forms oil film in the sliding contact portion of lip front end, and the lubricating status in this sliding contact portion are maintained into fluid profit
Sliding state.
However, in the high-speed rotation of roller etc., if heating up in Bearing inner side, pressure rises, be in described space s or
The grease that grease accumulates groove 62 is blown out to the outside (right sides in Fig. 6～7) of bearing due to the pressure differential of bearing internal external,
The lubricating status of lip front end may deteriorate.If the lubricating status of lip front end deteriorate, this lip due to the rubbing of inner ring outer peripheral face
Wipe and heat up, deteriorate.As a result, the sealing of sealing device reduces, there is water or foreign body enters Bearing inner and makes this axle
The situation of the service life reduction held.
Content of the invention
Even if the present invention provide a kind of grease amount due to pressure change etc. at grease accumulation to reduce it is also possible to
Promptly supply grease at this grease accumulation and maintain the sealing device of the lubricating status of lip front end and possess this sealing dress
The bearing arrangement put.
The sealing device of the 1st aspect of the present invention is the axially external both ends being arranged at outer ring in bearing arrangement
Sealing device, described bearing arrangement has the inner ring of described outer ring and the inner circumferential side in this outer ring and this outer ring concentric arrangement, its
In, described sealing device has: primary seal lip, contacts with the outer peripheral face of described inner ring；And secondary sealing lip, it is arranged at this master
The axially inner side of sealed lip, and do not contact with the outer peripheral face of described inner ring, by outer peripheral face and the described master of described inner ring
Sealed lip and described secondary sealing lip, form at the grease accumulation of ring-type that can accumulate grease, in described secondary sealing
Multiple guide portion, described guide portion are circumferentially formed on the face of at least one party in the radial outer side of lip and radially inner side face
The grease being attached to this face can be made to flow vertically.
In the sealing device of the aforesaid way of the present invention, in the footpath of the secondary sealing lip not contacted with the outer peripheral face of inner ring
Circumferentially form multiple guide portion, this guide portion can make attachment on the face of at least one party in outside side and radially inner side face
Grease in this face flows vertically.Therefore, it is possible to the grease of Bearing inner will be filled in, that is, by inner ring and outer ring
Grease after the rolling element stirring rolling in each orbital plane guides effectively at grease accumulation.More specifically, pass through
Form guide portion in the radial outer side of secondary sealing lip, the rolling element from rolling can be made outside to this footpath using this guide portion
The grease dispersing and adhering in side flows and the front end side shifting to secondary sealing lip vertically.And, move to secondary sealing
One part, by the capillarity with the gap of axle, can be drawn at grease accumulation by the grease of the front of lip
Lead.And, by forming guide portion in the radially inner side face of secondary sealing lip, can be made from secondary sealing lip using guide portion
The grease that leading section enters at grease accumulation flows and vertically to primary seal lip side shifting.Even if as a result,
Due to pressure change etc., the grease amount at grease accumulation reduces, and also can be accumulated to this grease by the action of rolling element
Place promptly supplies grease, the lubricating status of the primary seal lip front end being contacted with inner ring outer peripheral face can be maintained into fluid
Lubricating status.Thereby, it is possible to suppress the abrasion of primary seal lip or the deterioration causing that heats up, it is capable of the longevity of sealing device
Lifeization.
In the sealing device of aforesaid way, Ke Yishi, described guide portion is spiral helicine raised line or groove.This situation
Under, grease can swimmingly be made along the axial direction flowing of secondary sealing lip by spiral helicine protuberance or groove.
In the sealing device of aforesaid way, Ke Yishi, the raised line being formed in the radial outer side of described secondary sealing lip
Or groove by this raised line or groove towards the direction of axially inner side along tilting in the way of the direction of rotation of described inner ring.This feelings
Under condition, the raised line or recessed that tilts by way of being formed in the radial outer side of secondary sealing lip with the direction of rotation along inner ring
Groove, can be by grease next for the direction of rotation guiding along inner ring effectively at grease accumulation using this raised line or groove
Guiding.
In the sealing device of aforesaid way, Ke Yishi, the raised line being formed in the radially inner side face of described secondary sealing lip
Or groove with this raised line or groove towards axially inner side direction along the direction of rotation of described inner ring rightabout mode
Tilt.In this case, by forming the phase negative side of the direction of rotation along inner ring in the radially inner side face of secondary sealing lip
To the raised line that tilts of mode or groove, can be effective along this raised line or groove by the grease of the leading section of secondary sealing lip
Ground guides at grease accumulation.
In the sealing device of aforesaid way, Ke Yishi, institute is compared in the leading section of the axially inner side of described raised line or groove
State the leading section of secondary sealing lip and be extended axially inner side, the extended portion being extended by this is close with described pair
The circumferentially alternating configuration in leading section of envelope lip, the front end shape in wave shape of this secondary sealing lip.In this case, by raised line
Or groove and be gathered in the grease of the extended portion of convex due to the secondary sealing lip of this extended portion and inner ring periphery
The concavity that gap between face is less than between this extended portion and circumferentially adjacent extended portion (constitutes the recessed of waveform
Shape portion) in secondary sealing lip and inner ring outer peripheral face between gap, therefore due to dynamic pressure effect to described concavity sidesway
Dynamic.Next, moving to the grease of concavity side due to side and Bearing inner side at the grease accumulation in this concavity
Differential pressure and at grease accumulation side shifting.As a result, the convex of waveform can will be gathered in by raised line or groove
The grease of extended portion supplies effectively at grease accumulation.
The bearing arrangement of the 2nd aspect of the present invention possesses: outer ring；Inner ring, concentric with this outer ring in the inner circumferential side of this outer ring
Configuration；Rolling element, is configured between described outer ring and described inner ring；And the sealing device of aforesaid way, it is arranged at described outer ring
Axially external both ends.
In the bearing arrangement of the aforesaid way of the present invention, it is arranged on the sealing device tool at the axially external both ends of outer ring
Standby aforesaid structure, even if the grease amount therefore due to pressure change etc. at grease accumulation reduces it is also possible to this profit
Promptly supply grease at consistent lubricant accumulation, the lubricating status of the primary seal lip front end contacting with inner ring outer peripheral face can be tieed up
Hold into Liquid Lubrication Condition.
The sealing device of the aforesaid way according to the present invention and the bearing arrangement possessing this sealing device, even if due to pressure
Change etc. and grease amount at grease accumulation reduces it is also possible to promptly supply grease at this grease accumulation, energy
Enough maintain the lubricating status of lip front end.
Brief description
Before address the feature of the present invention described later and advantage passes through the explanation referring to the drawings of detailed description below
And clear and definite, wherein, identical label represents identical part.
Fig. 1 is the section view explanatory diagram of the bearing arrangement of the sealing device possessing one embodiment of the present invention.
Fig. 2 is the enlarged section explanatory diagram of the sealing device shown in Fig. 1.
Fig. 3 is the explanatory diagram of the radial outer side of secondary sealing lip.
Fig. 4 is the partial enlargement explanatory diagram of the secondary sealing lip shown in Fig. 3.
Fig. 5 is the explanatory diagram of the another way of secondary sealing lip.
Fig. 6 is the broken section explanatory diagram of of conventional sealing device.
Fig. 7 is the broken section explanatory diagram of another of conventional sealing device.
Specific embodiment
Hereinafter, referring to the drawings, the sealing device describing the present invention in detail and the reality of the bearing arrangement possessing this sealing device
Apply mode.It should be noted that the present invention is not defined to above-mentioned illustration, open by claims, and include and right
Whole changes in the equivalent meaning of claim and scope.
Fig. 1 is the section view explanation of the structure of bearing arrangement 2 of sealing device 1 representing and possessing one embodiment of the present invention
Figure, Fig. 2 is the enlarged section explanatory diagram of the sealing device 1 shown in Fig. 1.Bearing arrangement 2 is disposed on roll mill roller two ends
Roll neck (not shown) the rolling bearing system that this roller is rotatably supported.Bearing arrangement 2 possesses outer ring 3, inner ring 4, makees
For the taper roller 5 of rolling element, retainer 6, sealing device 1.
Outer ring 3 embeds in the housing (not shown) being fixed to located at roll mill.Outer ring 3 is by the axle configuring in bearing arrangement 2
The first cycle component 3a and a pair of cylinders shape configuring in the axial both sides of the first cycle component 3a to central cylindrical shape
Second cycle component 3b is constituted.First cycle component 3a and a pair second cycle component 3b are combined and constitute by outer ring 3 vertically.
A pair of the outer race track face 3a1 rolling for multiple taper rollers 5 is formed with the inner peripheral surface of the first cycle component 3a.At a pair
The outer race track face 3b1 rolling for multiple taper rollers 5 is formed on each inner peripheral surface of the second cycle component 3b.
Inner ring 4 is in inner circumferential side and this outer ring 3 concentric arrangement of outer ring 3.Inner ring 4 is by the inner ring component 4a edge of a pair of cylinders shape
Axially combine and constitute.A pair of the inner ring rail rolling for multiple taper rollers 5 is formed with the outer peripheral face of each inner ring component 4a
Road face 4a1.Roll neck in the fixing mill roll of inner circumferential insertion of inner ring 4.Thus, inner ring 4 is rotated together with mill roll.
It is formed at a pair of outer race track face 3a1 of the first cycle component 3a and the axially inner side being formed at each inner ring component 4a
Inner race track face 4a1 relatively.On the other hand, be formed at the outer race track face 3b1 of the second cycle component 3b be formed at each interior
The axially external inner race track face 4a1 of circle component 4a is relatively.It should be noted that axially external with bearing arrangement 2
Outside on the basis of portion, in fig. 2 for left side.On the other hand, axially inner side is similarly on the basis of the inside of bearing arrangement 2
Private side or inner side, in fig. 2 for right side.
Multiple taper rollers 5 roll and configure freely between inner race track face 4a1 and outer race track face 3a1 and inner ring
Between orbital plane 4a1 and outer race track face 3b1.The bearing arrangement 2 of present embodiment constitutes and for multiple taper rollers 5 to be configured to four
The taper roll bearing of row.Multiple taper rollers 5 are circumferentially kept by the retainer 6 of ring-type.
The axial two ends in the space of the ring-type being formed by outer ring 3 and inner ring 4 are sealed by sealing device 1.Sealing device 1 is fixing
Inner peripheral surface 3c in the second cycle component 3b constituting outer ring 3.Sealing device 1 has primary seal lip 7 and secondary sealing lip 8.
The leading section 7a of primary seal lip 7 is contacted with the outer peripheral face 4b of the inner ring component 4a constituting inner ring 4, but secondary sealing lip 8
Leading section 8a is the state not contacted with the outer peripheral face 4b of inner ring component 4a.That is, in leading section 8a and the inner ring of secondary sealing lip 8
Formed between 4 outer peripheral face 4b such as 1mm about gap.
Primary seal lip 7 and secondary sealing lip 8 are made up of elastomers such as rubber, by by vulcanizing adhesion such as this rubber in ring
The axle 9 of shape and formed.The ring that the axially inner side end from cylindrical portion 9a with from cylindrical portion 9a for the axle 9 is inwardly just extended to footpath
Shape plate portion 9b is constituted.Sealing device 1 by consolidating cylindrical portion 9a of axle 9 to the inner peripheral surface 3c press-in of the second cycle component 3b
Due to this second cycle component 3b.
The end of the radially inner side from annular plate section 9b for the primary seal lip 7 towards this annular plate section 9b interior side and axle is outside
Side projects.The end of the radially inner side from annular plate section 9b for the secondary sealing lip 8 towards this annular plate section 9b interior side and axle is inside
Side projects.By the outer peripheral face 4b of primary seal lip 7 and secondary sealing lip 8, inner ring 4, formation can be accumulated from Bearing inner
The grease accumulation of the ring-type of grease at 10.
In the state of sealing device 1 is fixed on the inner peripheral surface 3c of the second cycle component 3b, primary seal lip 7 is with regulation
Pressing force and the outer peripheral face 4b sliding contact of inner ring 4.Spring especially by radial outer side 7b being arranged on primary seal lip 7
Enclose 11 and this primary seal lip 7 is forcibly pressed to footpath is inwardly square, thus the leading section 7a's of raising primary seal lip 7 is close
Feng Xing.Thus, prevent the entrance to Bearing inner of water or foreign body.
Fig. 3 is the explanatory diagram observed from Bearing inner side of the radial outer side of secondary sealing lip 8, and Fig. 4 is shown in Fig. 3
The partial enlargement explanatory diagram of secondary sealing lip 8.It should be noted that the labelling of the dotted line of Fig. 3～4 represents secondary sealing lip 8
Radially inner side face.In the present embodiment, as shown in figs. 34, in radial outer side 8b and the radially inner side of secondary sealing lip 8
Face 8c is formed with the spiral helicine raised line 12 as guide portion.Raised line 12 has the radial outside making to be attached to secondary sealing lip 8
The guiding function that grease on face 8b or radially inner side face 8c flows vertically or guides.Raised line 12 is in secondary sealing lip 8
Circumferentially formed multiple in radial outer side 8b or radially inner side face 8c at predetermined intervals.
Be formed at raised line 12 in radial outer side 8b of secondary sealing lip 8 with this raised line 12 towards axially inner side direction
(that is, towards the direction of the leading section 8a of secondary sealing lip 8) tilts along the mode of direction of rotation r (with reference to Fig. 4) of inner ring 4.
On the other hand, be formed at raised line 12 on the radially inner side face 8c of secondary sealing lip 8 with this raised line 12 towards axially inner side side
Tilt to the rightabout mode of direction of rotation r along inner ring 4.
In addition, the leading section 12a of the axially inner side of raised line 12 compares the leading section 8a of secondary sealing lip 8 and is extended
Axially inner side.The extended portion 8d being extended by this and the circumferentially alternating configuration of leading section 8a of secondary sealing lip 8, secondary
The front end shape in wave shape of sealed lip 8.By the front end of secondary sealing lip 8 shape in wave shape, the front end of secondary sealing lip 8 with
Gap between the outer peripheral face 4b of inner ring 4 is circumferentially alternating to be formed with narrow position and (is extended prolonging of the convex having raised line 12
Stretch between setting unit 8d and the outer peripheral face 4b of inner ring 4) and the wide position (concavity between extended portion 8d adjacent in the circumferential
Between the outer peripheral face 4b of portion 8e and inner ring 4).
In the present embodiment, radial outer side 8b of secondary sealing lip 8 and radially inner side face 8c are circumferentially formed
There are multiple raised lines 12.By forming above-mentioned raised line 12, the grease of Bearing inner can will be filled in i.e. by inner ring 4 and outer ring
Grease after taper roller 5 stirring rolling in 3 each orbital plane 10 guides effectively at grease accumulation.That is, pass through
In radial outer side 8b of secondary sealing lip 8 formed raised line 12, can using raised line 12 bear from roll taper roller 5 to
Grease that this radial outer side 8b is dispersed and adhered to is so as to the flowing vertically extension to the front end of secondary sealing lip 8 sets
Put portion 8d to move.And, move to the front end of secondary sealing lip 8 extended portion 8d grease by with the gap of axle
Capillarity and one part 10 can be guided at grease accumulation.And, by inside in the footpath of secondary sealing lip 8
Form raised line 12 on the 8c of side, can make to be entered into by the extended portion 8d of the front end of secondary sealing lip 8 using this raised line 12
At grease accumulation, 10 grease flows and vertically to primary seal lip 7 side shifting.Even if as a result, because pressure becomes
Change etc. and at grease accumulation 10 grease amount reduce, also can be at this grease accumulation 10 by the action of taper roller 5
Promptly supply grease, the lubricating status of the leading section 7a of the primary seal lip 7 contacting with inner ring outer peripheral face 4b can be tieed up
Hold into Liquid Lubrication Condition.Thereby, it is possible to suppress the abrasion of primary seal lip 7 or the deterioration causing that heats up, it is capable of sealing
The long lifetime of device 1.
In addition, in the present embodiment, due to forming spiral helicine raised line 12, therefore, it is possible to more swimmingly make grease edge
The axial direction flowing of secondary sealing lip 8.
In addition, in the present embodiment, it is formed at raised line 12 in radial outer side 8b of secondary sealing lip 8 towards axial direction
Inner side direction tilted in the way of direction of rotation r along inner ring 4, therefore, it is possible to by by this raised line 12 along inner ring 4 rotation
Turn the grease that direction guiding comes effectively 10 to guide at grease accumulation.
In addition, in the present embodiment, it is formed at raised line 12 on the radially inner side face 8c of secondary sealing lip 8 towards axial direction
The direction of inner side is tilted in the rightabout mode along direction of rotation r of inner ring 4, therefore, it is possible to by secondary sealing lip 8
The grease of the concavity 8e of front end 10 guides effectively along this raised line 12 at grease accumulation.
In addition, in the present embodiment, the front end shape in wave shape of secondary sealing lip 8, is therefore assembled by raised line 12
To outside secondary sealing lip 8 and the inner ring due to this extended portion 8d for the grease of the extended portion 8d of convex constituting waveform
The concavity that gap between side face 4b is less than between this extended portion 8d and circumferentially adjacent extended portion 8d (is constituted
The concavity of waveform) gap between secondary sealing lip 8 in 8e and inner ring outer peripheral face 4b, therefore by dynamic pressure effect to institute
State concavity 8e side shifting.Next, the grease moving to concavity 8e side amasss by the grease in described concavity 8e
Deposit place side and Bearing inner side differential pressure and at this grease accumulation side shifting.As a result, can be by by raised line 12
Gather the grease of extended portion 8d effectively 10 to supply at grease accumulation.
(other variation) present invention is not defined to aforesaid embodiment, can carry out each in claims
Plant change.For example, in aforesaid embodiment, in radial outer side and this two square one-tenth of radially inner side face of secondary sealing lip
There is the raised line as guide portion but it is also possible to groove 13 is formed as shown in Figure 5 on the face of a side.In mode shown in Fig. 5,
Form groove 13 only in radial outer side 8b of secondary sealing lip but it is also possible to radial outer side and radially inner side face this two
Square one-tenth groove.In the case that formation is fluted, also can be made from rolling using this groove in the same manner as the situation of raised line
The grease that taper roller disperses to radial outer side and adheres to flows and the front end side shifting to secondary sealing lip vertically.And
And, the grease being entered into from the leading section of secondary sealing lip at grease accumulation can be made to flow vertically by groove and to
Primary seal lip side shifting.
In addition, in aforesaid embodiment, in the radial outer side of secondary sealing lip and radially inner side face, this is two square
Become to have the raised line as guide portion, but setting raised line also can obtain certain effect only on the face of a side.And, front
In the embodiment stated, it is formed with convex as guide portion in the radial outer side of secondary sealing lip and this two side of radially inner side face
Bar, but it is also possible to form raised line on the face of a side, forms groove on the face of the opposing party.
In addition, in aforesaid embodiment, section is formed at the radial outside of secondary sealing lip for the raised line of rectangle
Face and radially inner side face are but it is also possible to adopt the raised line of the such as others such as section semicircle, section parabolic shape section shape.
Claims (7)
1. a kind of sealing device, is the sealing device at the axially external both ends being arranged at outer ring (3) in bearing arrangement, described
Bearing arrangement has the inner ring (4) of described outer ring (3) and the inner circumferential side in this outer ring (3) and this outer ring (3) concentric arrangement, institute
State sealing device to be characterised by, comprising:
Primary seal lip (7), is contacted with the outer peripheral face of described inner ring (4)；And
Secondary sealing lip (8), is arranged at the axially inner side of this primary seal lip (7), and does not connect with the outer peripheral face of described inner ring (4)
Touch, wherein,
By outer peripheral face and described primary seal lip (7) and the described secondary sealing lip (8) of described inner ring (4), formation can
Accumulate at the grease accumulation of ring-type of grease (10),
On at least one of the radial outer side (8b) of described secondary sealing lip (8) and radially inner side face (8c) face circumferentially
Form multiple guide portion, described guide portion can make the grease being attached to this face flow vertically.
2. sealing device according to claim 1, wherein,
Described guide portion is spiral helicine raised line or groove.
3. sealing device according to claim 2, wherein,
The raised line being formed in the radial outer side (8b) of described secondary sealing lip (8) or groove are with this raised line or groove towards axially
The mode of the direction of rotation along described inner ring (4) for the direction of inner side tilts.
4. sealing device according to claim 2, wherein,
The raised line being formed in the radially inner side face (8c) of described secondary sealing lip (8) or groove are with this raised line or groove towards axially
The rightabout mode of the direction of rotation along described inner ring (4) for the direction of inner side tilts.
5. sealing device according to claim 2, wherein,
The leading section that described secondary sealing lip (8) is compared in the leading section of the axially inner side of described raised line or groove is extended axle
To inner side, the extended portion (8d) being extended by this and the leading section (8a) of described secondary sealing lip (8), this secondary sealing
The front end of lip (8) is formed as waveform.
6. sealing device according to claim 2, wherein,
Described raised line or groove circumferentially form multiple at predetermined intervals.
7. a kind of bearing arrangement is it is characterised in that include:
Outer ring (3)；
Inner ring (4), in inner circumferential side and this outer ring (3) concentric arrangement of this outer ring (3)；
Rolling element (5), is configured between described outer ring (3) and described inner ring (4)；And
Sealing device according to any one of claim 1～claim 6, the axle being arranged at described outer ring (3) is outside
Side both ends.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-146635 | 2015-07-24 | ||
| JP2015146635A JP6604070B2 (en) | 2015-07-24 | 2015-07-24 | SEALING DEVICE AND BEARING DEVICE PROVIDED WITH THE SAME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369064A true CN106369064A (en) | 2017-02-01 |
| CN106369064B CN106369064B (en) | 2020-10-30 |
Family
ID=57878396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610586196.6A Expired - Fee Related CN106369064B (en) | 2015-07-24 | 2016-07-22 | Sealing device and bearing device provided with same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6604070B2 (en) |
| KR (1) | KR102473317B1 (en) |
| CN (1) | CN106369064B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056256A (en) * | 2020-01-15 | 2020-04-24 | 衡阳运输机械有限公司 | Sealing roller |
| CN111868860A (en) * | 2018-03-29 | 2020-10-30 | 京瓷株式会社 | Film capacitor, connection type capacitor, inverter, and electric vehicle |
| CN114412736A (en) * | 2022-01-27 | 2022-04-29 | 北京三力新能科技有限公司 | Bearing lubricating grease feeding device and wind generating set |
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| DE2737401A1 (en) * | 1977-08-19 | 1979-02-22 | Bayer Ag | CYCLOPROPYL-SUBSTITUTED PYRIMIDINE (4) YL (THIONO) - (THIOL) -PHOSPHOR (PHOSPHON) -ACIDESTERS OR. -ESTERAMIDES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS INSECTICIDES AND ACARICIDES |
| JP5158357B2 (en) * | 2008-06-09 | 2013-03-06 | Ｎｏｋ株式会社 | Sealing device |
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- 2015-07-24 JP JP2015146635A patent/JP6604070B2/en not_active Expired - Fee Related
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- 2016-07-19 KR KR1020160091225A patent/KR102473317B1/en active IP Right Grant
- 2016-07-22 CN CN201610586196.6A patent/CN106369064B/en not_active Expired - Fee Related
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| JPS5152154U (en) * | 1974-10-17 | 1976-04-20 | ||
| US4770548A (en) * | 1985-12-19 | 1988-09-13 | The Timken Company | Hydrodynamic seal |
| US5553870A (en) * | 1994-02-16 | 1996-09-10 | The Timken Company | Lip seal separating oil and grease |
| CN1702342A (en) * | 2004-05-28 | 2005-11-30 | 大和缝纫机制造株式会社 | Sealing structure |
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| DE102013202728A1 (en) * | 2013-02-20 | 2014-08-21 | Aktiebolaget Skf | Sealing arrangement for sealing rolling bearing, of viscous coupling i.e. motor fan, has elastomeric sealing structure whose side comprises rejection structures that are arranged along opposite side of fluid flow along radial direction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111868860A (en) * | 2018-03-29 | 2020-10-30 | 京瓷株式会社 | Film capacitor, connection type capacitor, inverter, and electric vehicle |
| CN111056256A (en) * | 2020-01-15 | 2020-04-24 | 衡阳运输机械有限公司 | Sealing roller |
| CN111056256B (en) * | 2020-01-15 | 2021-09-03 | 衡阳运输机械有限公司 | Sealing roller |
| CN114412736A (en) * | 2022-01-27 | 2022-04-29 | 北京三力新能科技有限公司 | Bearing lubricating grease feeding device and wind generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017026080A (en) | 2017-02-02 |
| KR20170012061A (en) | 2017-02-02 |
| JP6604070B2 (en) | 2019-11-13 |
| KR102473317B1 (en) | 2022-12-05 |
| CN106369064B (en) | 2020-10-30 |
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Granted publication date: 20201030 |