CN103925297A - Rolling bearing device and rolling mill supporting roll using the same - Google Patents
Rolling bearing device and rolling mill supporting roll using the same Download PDFInfo
- Publication number
- CN103925297A CN103925297A CN201410014264.2A CN201410014264A CN103925297A CN 103925297 A CN103925297 A CN 103925297A CN 201410014264 A CN201410014264 A CN 201410014264A CN 103925297 A CN103925297 A CN 103925297A
- Authority
- CN
- China
- Prior art keywords
- space
- sealing lip
- ring
- pressure
- rolling bearing
- 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
Links
Classifications
-
- 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
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
- F16C33/7866—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element with 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
- F16C33/726—Sealings with means to vent the interior of the bearing
-
- 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
- F16C19/24—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 radial load mainly
- F16C19/28—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 radial load mainly 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The present invention provides a rolling bearing device and a rolling mill supporting roll using the same. The rolling bearing device is provided with sealing devices for sealing the opening of a first annular space between an inner ring component and an outer ring component. Each sealing device is provided with a metal core. Vent holes are disposed on the metal cores and communicate the first annular space and a second annular space, so as to release the pressure inside the first annular space to the second annular space. A second sealing lip is separated from an oil thrower if the pressure inside the first annular space exceeds a preset pressure, thereby enabling the pressure inside the first annular space to be released from the vent holes and the second annular ring to the outside space.
Description
The application advocates the preference of No. 2013-005367th, the Japanese patent application that proposes on January 16th, 2013, and quotes at this full content that comprises specification, accompanying drawing and specification digest.
Technical field
The inventive example is as the roller mill support roll that relates to the rolling bearing system that support roll was used for the roller of roller mill is supported and use this rolling bearing system.
Background technique
In multistage roller mill etc., for support roll milling train, with the support roll of roller, be configured to and possess axle and a plurality of rolling bearing system.The outer build-in of above-mentioned rolling bearing system is due to this axle, and is configured to axially side by side.As shown in Figure 5, the roller bearing that above-mentioned rolling bearing system has possessed outer ring 101, inner ring 102, multiple row cylindrical roller 103 and seal arrangement 104 by multiple row forms.Above-mentioned outer ring 101 is roulette wheels.The outer build-in of above-mentioned inner ring 102 is due to above-mentioned axle.Above-mentioned cylindrical roller 103 is can free rolling mode being located between inner ring 101, outer ring 102.Circular opening portion between 104 pairs of inner rings 101 of above-mentioned seal arrangement, outer ring 102 seals.Seal arrangement 104 possesses metal-cored 105, the oil thrower 106 of ring-type and the sealing lip 107 of ring-type of ring-type.Above-mentioned metal-cored 105 are fixed on outer ring 101.Above-mentioned oil thrower 106 is fixed on inner ring 102, and with respect to metal-cored 105 arranged opposite in an axial side.The end face of the axial side of above-mentioned sealing lip 107 from metal-cored 105 arrange highlightedly and with the end face sliding contact of oil thrower 106, thereby to sealing between outer ring 101 and inner ring 102.
In above-mentioned rolling bearing system, by the mist of oil by mixing with air with authorized pressure forced feed to the space between inner ring 101, outer ring 102, thereby each portion of above-mentioned rolling bearing system is lubricated.And, this rolling bearing system is configured to, owing to having supplied with mist of oil, thereby the pressure in the space between inner ring 101, outer ring 102 raises, so the front end of the sealing lip 107 of seal arrangement 104 is separated a little from oil thrower 106, thereby the pressure in the space between inner ring 101, outer ring 102 is discharged to space outerpace side, thereby the pressure in above-mentioned space can not surpass the pressure (for example,, with reference to TOHKEMY 2002-228007 communique) of regulation.
In the rolling bearing system of above-mentioned conventional example, the front end of sealing lip 107 is separated from oil thrower 106 because of the pressure in the space between inner ring 101 and outer ring 102, therefore produces the foreign matters such as moisture, dust and by this gap, invades the worry in the space between inner ring 101, outer ring 102.Above-mentioned foreign matter is invaded the key factor that becomes the life-span reduction that makes rolling bearing system in above-mentioned space.And the release of the pressure in the space between inner ring 101, outer ring 102 is carried out from oil thrower 106 is separated by sealing lip 107.Therefore, if inner ring 101, outer ring 102 relatively move vertically a little, thereby sealing lip 107 changes with respect to the contact of oil thrower 106, or cannot successfully carry out the separation of sealing lip 107, the pressure oscillation in the space between inner ring 101, outer ring 102 is larger, thereby also exists the delivery volume of mist of oil to become unstable and produce the worry of insufficient lubrication.
Summary of the invention
One of object of the present invention is to provide the change of the pressure in a kind of space that can suppress between inner ring, outer ring, and can more effectively suppress the roller mill support roll that foreign matter is invaded the rolling bearing system in above-mentioned space and used this rolling bearing system.
The structural of the rolling bearing system of a mode of the present invention is characterised in that to possess: inner ring, and it has inner race track face at outer circumferential face, outer ring, it is configured to above-mentioned inner ring concentric, and has and the opposed outer race track face of above-mentioned inner race track face at inner peripheral surface, a plurality of rolling elements, they can rollably be disposed between above-mentioned inner race track face and above-mentioned outer race track face, and a pair of seal arrangement, they are arranged at the axial two ends of above-mentioned inner ring and above-mentioned outer ring, the first space of being delimited by above-mentioned inner ring outer circumferential face and above-mentioned outer ring inner peripheral surface is sealed, by the vaporific lubricant oil forced feed being mixed with gas in above-mentioned the first space, above-mentioned seal arrangement possesses: ring-type metal-cored, and it is fixed on any one party of above-mentioned inner ring and outer ring, the oil thrower of ring-type, its be fixed on any the opposing party of above-mentioned inner ring and outer ring and with respect to above-mentioned metal-cored arranged opposite in axial outside, the first sealing lip, its be arranged at highlightedly above-mentioned metal-cored axial outside side end face and with above-mentioned oil thrower sliding contact, thereby the axial two end part opening in above-mentioned the first space is sealed, and second sealing lip, it is arranged at than above-mentioned the first sealing lip more by radial outside, be arranged at highlightedly above-mentioned metal-cored above-mentioned side end face and with above-mentioned oil thrower sliding contact, thereby together above-mentioned the first space is sealed with above-mentioned the first sealing lip, and and above-mentioned the first sealing lip between form second space, at the above-mentioned metal-cored exhaust port that is provided with, above-mentioned exhaust port is communicated with between above-mentioned the first space and above-mentioned second space, above-mentioned the second sealing lip has pressure control function, , if the pressure in above-mentioned the first space surpasses authorized pressure, above-mentioned the second sealing lip is separated from above-mentioned oil thrower, make the pressure in above-mentioned the first space be released into space outerpace by above-mentioned exhaust port and above-mentioned second space, thereby the state to above-mentioned the first sealing lip and above-mentioned oil thrower sliding contact maintains.
Accompanying drawing explanation
According to the detailed description of mode of execution being carried out referring to accompanying drawing, above-mentioned and more feature of the present invention and advantage can become clearer, wherein identical element are marked to identical reference character, wherein,
Fig. 1 means the sectional view of support roll of the roller mill of one embodiment of the present invention.
Fig. 2 is the partial sectional view that the seal arrangement in Fig. 1 is amplified.
Fig. 3 observes the External view of slit portion timesharing from inner side end side.
Fig. 4 means the sectional view of structure of the rolling bearing system of other modes.
Fig. 5 means the sectional view of existing rolling bearing system.
Embodiment
Next, with reference to accompanying drawing, to of the present invention, preferred embodiment describe.Fig. 1 means the sectional view of support roll of the roller mill of one embodiment of the present invention.In figure, support roll is to contact with (not shown) such as the work roll that rolled material is carried out to the roller mill of rolling, intermediate roll to support the roller that above-mentioned work roll, intermediate roll are used drivenly.Support roll possesses single or a plurality of rolling bearing systems 1 and supporting axle T rolling bearing system 1 being supported with respect to roller mill.
Rolling bearing system 1 has one or more along axial arrangement on supporting axle T, and so that the outer circumferential face of outer coil component 2 and work roll etc. contact and drivenly above-mentioned work roll etc. supported for the mode that can roll.Rolling bearing system 1 possesses retainer 5 and a pair of seal arrangement 10 of outer coil component 2, inner loop component 3, cylindrical roller 4, ring-type.Above-mentioned outer coil component 2 forms with the roller of above-mentioned roller mill etc. and contacts and driven roller.Above-mentioned inner loop component 3 is disposed at the inner circumferential side of outer coil component 2 in concentric mode.Above-mentioned cylindrical roller 4 is a plurality of can free rolling mode being disposed at the rolling element between outer coil component 2 and inner loop component 3.Above-mentioned retainer 5 is circumferentially keeping above-mentioned a plurality of cylindrical rollers 4.Above-mentioned seal arrangement 10 is fixed on the two ends of above-mentioned rolling bearing system 1.
Inner loop component 3 is configured to the inner ring 3a of pair of cylinders shape is combined in the axial direction.On the outer circumferential face of inner ring 3a, be formed with the inner race track face 3a1 rolling for a plurality of cylindrical rollers 4.Outer coil component 2 parts cylindraceous that to be outer circumferential face 2a contact with roller of above-mentioned roller mill etc.The inner peripheral surface of coil component 2 is formed with in the opposed mode of inner race track face 3a1 with being formed at respectively a pair of inner ring 3a the outer race track face 2b that a plurality of cylindrical rollers 4 of a pair of confession roll outside.A plurality of cylindrical rollers 4 are can free rolling mode being disposed between a pair of inner race track face 3a1 and outer race track face 2b, and thus, outer coil component 2 can rotate freely relatively with inner loop component 3.By said structure, for rolling bearing system 1, inner loop component 3 is fixed on supporting axle T, thereby supports with the external coil component 2 of mode that can rotate freely with respect to supporting axle T.
A pair of seal arrangement 10 is arranged at the axial two ends of outer coil component 2 and inner loop component 3.A pair of seal arrangement 10 is individually fixed in the both ends open as the first annulus (the first space) S1 in the space of the ring-type of being delimited by inner race track face 3a1 and outer race track face 2b, and above-mentioned opening is closed.Therefore, the first ring-type space S 1 is sealed with respect to outside.
At the end-to-end joint part 3b that a pair of inner ring 3a is docked mutually, be formed with the oil supply hole 3c for the interior supply mist of oil of the first ring-type space S 1 between inner loop component 2, outer coil component 3.By oil supply hole 3c to the interior forced feed of the first ring-type space S 1 by the mist of oil mixing with gases such as air.In the rolling bearing system 1 of present embodiment, in above-mentioned mist of oil forced feed to the first ring-type space S 1, thereby each portion is lubricated.In addition, the mist of oil being supplied to for each portion is lubricated can be used and mix the gas of high pressure and the mixture of mist of oil, also can use mist of oil itself is pressurizeed and the mist of oil of high-pressure trend.
Fig. 2 is the partial sectional view that the seal arrangement in Fig. 1 is amplified.In the drawings, seal arrangement 10 possesses oil thrower 12 and the sealed member 13 of metal-cored 11, the ring-type of ring-type.Above-mentioned metal-cored 11 are fixed on outer coil component 2.Above-mentioned oil thrower 12 is fixed on inner ring 3a(inner loop component 3).Above-mentioned sealed member 13 is fixed on metal-cored 11.
Oil thrower 12 is usingd mode and this metal-cored 11 arranged opposite that are positioned at as the axial outside of inner loop component 3 end one sides with respect to metal-cored 11.Oil thrower 12 has cylindrical part 12a and lip part 12b.The outer build-in of above-mentioned cylindrical part 12a is due to the outboard end of inner ring 3a outer circumferential face.Above-mentioned lip part 12b is formed at the outboard end of cylindrical part 12a.The outer circumferential face 12c of lip part 12b is set to form small gap with respect to the inner peripheral surface of outer coil component 2, and is configured for preventing that foreign matter from invading than oil thrower 12 more by the Yi Ce labyrinth, inner space of rolling bearing system 1.
Metal-cored 11 periphery edge be clamped in back-up ring 15 in the peripheral groove 2c forming on the inner peripheral surface that is embedded into coil component 2 outside and the order difference part 2d that forms on the inner peripheral surface of coil component 2 outside between.Thus, metal-cored 11 with can one the mode of rotation be fixed on the inner peripheral surface of outer coil component 2.
Sealed member 13 is use the elasticity raw material such as nitrile butadiene rubber and by vulcanization gelatinization joint, form the parts that are fixed on metal-cored 11.Sealed member 13 has the first sealing lip 13b of base portion 13a and ring-type.Above-mentioned base portion 13a is along the inner side end 11b of the axial inner side towards metal-cored 11.Above-mentioned the first sealing lip 13b be arranged at highlightedly metal-cored 11 outside end face 11a and with the inner side end 12b1 sliding contact of lip part 12b.Sealed member 13 also has the second sealing lip 13c and the joint 13d of ring-type.Above-mentioned the second sealing lip 13c is arranged at the radial outside of the first sealing lip 13b with one heart.Above-mentioned joint 13d arranges along the outside end face 11a in the axial outside towards metal-cored 11, and the base end part of the first sealing lip 13b is connected with the base end part of the second sealing lip 13c.
The first sealing lip 13b, the second sealing lip 13c, base portion 13a etc. that sealed member 13 has form as one by vulcanization gelatinization joint as described above.Therefore, compare with the situation that is individually formed above-mentioned each portion, the formation of each portion is easy.
Base portion 13a forms from metal-cored 11 inner side end 11b metal-cored 11 outer circumferential face is covered.Base portion 13a is located between metal-cored 11 periphery edge and the order difference part 2d of outer coil component 2, and externally between coil component 2 and metal-cored 11 periphery edge, seals.
The first sealing lip 13b is accompanied by from metal-cored 11 outside end face 11a and extends towards radial outside towards axial oil thrower 12 sides.The inner side end 12b1 sliding contact of the front end of sealing lip 13b and lip part 12b, thus allow the relative rotation between outer coil component 2 and inner loop component 3 and the first the open-ended of ring-type space S 1 sealed.In other words, the first ring-type space S 1 divide to be formed by the inner peripheral surface of the outer circumferential face of inner loop component 3, outer coil component 2 and a pair of the first sealing lip 13b of being arranged at axial two ends.
The second sealing lip 13c and the first sealing lip 13b be arranged at highlightedly in the same manner metal-cored 11 outside end face 11a and with the inner side end 12b1 sliding contact of lip part 12b, thereby together the first ring-type space S 1 is sealed with the first sealing lip 13b.The second sealing lip 13c is arranged at than the first more outer portion of sealing lip space S 3 sides by being arranged at one heart the radial outside of the first sealing lip 13b.
In addition, the second sealing lip 13c is by being arranged at one heart the radial outside of the first sealing lip 13b, and and above-mentioned the first sealing lip 13b between form the second annulus (second space) S2.Therefore, the second annulus S2 is by the oil thrower 12 division formation of the first sealing lip 13b, the second sealing lip 13c, metal-cored 11 and the confession sealing lip 13b that are provided with above-mentioned sealing lip 13b, 13c, 13c sliding contact.The first sealing lip 13b and the second sealing lip 13c are located between the first ring-type space S 1 and space outerpace S3 the second annulus S2, and above-mentioned the first ring-type space S 1 is sealed.
In addition, metal-cored 11, be provided with exhaust port 11c, above-mentioned exhaust port 11c will be communicated with between the first ring-type space S 1 and the second annulus S2 and by earth pressure release to the second annulus S2 in the first ring-type space S 1.This exhaust port 11c forms section and is cylindric and on thickness direction, connects metal-coredly 11, and then connects joint 13d and forms.In addition, the circumferencial direction of exhaust port 11c along metal-cored 11 is provided with a plurality of.
The base portion 13a of metal-cored 11 the sealed parts 13 of inner side end 11b side of exhaust port 11c covers.In other words, the base portion 13a of sealed member 13 forms the cap of closing exhaust port 11c.
The part corresponding with exhaust port 11c at base portion 13a is formed with slit 13a1.
Fig. 3 is the External view during from the part of inner side end 11b unilateral observation slit 13a1.Also with reference to Fig. 1, slit 13a1 is along forming straight line shape with the direction of quadrature radially.Slit 13a1 spreads all over the whole region of thickness direction to carry out otch to base portion 13a and forms, thereby if the pressure in the first ring-type space S 1 surpasses slit 13a1 opening of authorized pressure P1.More specifically, if the pressure ratio authorized pressure P1 of the first ring-type space S 1 is high and higher than the second annulus S2, slit 13a1 opening, is released into the second annulus S2 thereby the pressure of the first ring-type space S 1 passes through slit 13a1.On the other hand, it is difficult that the slit 13a1 that the foreign matter such as moisture, dust opens and closes accordingly by the pressure with the first ring-type space S 1 just becomes.Therefore, as the base portion 13a of cap, be provided with slit 13a1, thereby can allow earth pressure release to the second annulus S2 side in the first ring-type space S 1, and can suppress foreign matter and invade in the first ring-type space S 1 from exhaust port 11c.
In addition, the first sealing lip 13b is in the situation that the pressure of the first ring-type space S 1 surpasses the authorized pressure P1 as the pressure of slit 13a1 opening, is also set as not from the contact of the degree of oil thrower 12 separation.Therefore,, even if the pressure in the first ring-type space S 1 surpasses authorized pressure P1, the first sealing lip 13b also maintains the state with oil thrower 12 sliding contacts.
If the pressure in the first ring-type space S 1 surpasses authorized pressure P1, thereby the pressure of the first ring-type space S 1 is released into the second annulus S2, the pressure rise of the second annulus S2 by exhaust port 11c.If the pressure in the second annulus S2 is because being surpassed authorized pressure P2 from the pressure of the first ring-type space S 1 release, the second sealing lip 13c produces resiliently deformable because of this pressure, from oil thrower 12 separation, thus by the earth pressure release in the second annulus S2 to space outerpace S3 side.
In addition, as described later, the mode becoming more than authorized pressure P2 with authorized pressure P1 is set each portion.Therefore,, if by earth pressure release to the second annulus S2 of the first ring-type space S 1, more than the second annulus S2 becomes authorized pressure P2, thereby the second sealing lip 13c is from oil thrower 12 separation.In other words, the second sealing lip 13c has pressure control function,, if the pressure in the first ring-type space S 1 surpass authorized pressure P1 the second sealing lip 13c from oil thrower 12 separation, thereby make the pressure in the first ring-type space S 1 be released into space outerpace S3 by exhaust port 11c and the second annulus S2.
According to the rolling bearing system 1 forming as described above, if the pressure in second sealing lip 13c the first ring-type space S 1 surpasses authorized pressure P1 from oil thrower 12 separation, thereby makes the pressure in the first ring-type space S 1 be released into space outerpace S3 by exhaust port 11c and the second annulus S2.Thus, can be by the earth pressure release in the first ring-type space S 1 to space outerpace S3 side, and can maintain the state of the first sealing lip 13b and oil thrower 12 sliding contacts.That is,, in above-mentioned rolling bearing system 1, be configured to the pressure making in the first ring-type space S 1 and discharge than the second annulus S2 of the first more outer portion of sealing lip 13b space S 3 sides by conduct.Thus, can make the second sealing lip 13c mainly bear the function (pressure control function) as the outlet valve that the pressure in the first ring-type space S 1 and in the second annulus S2 is adjusted, can make the first sealing lip 13b mainly bear the function that improves the sealing between inner loop component 2, outer coil component 3.
Thus, the second sealing lip 13c can adjust the contact with respect to oil thrower 12 to suppress the mode of the pressure oscillation in the first ring-type space S 1.The first sealing lip 13b can adjust contact with respect to the mode of the sealing of oil thrower 12 with raising.Its result, can suppress the change of the pressure in the first ring-type space S 1, and improves sealing, thereby can more effectively suppress foreign matter, invades in the first ring-type space S 1.
In the present embodiment, the authorized pressure P1 of the first ring-type space S 1 is the release pressure of slit 13a1, and the authorized pressure P2 of the second annulus S2 is the release pressure of the second sealing lip 13c.If the pressure of space outerpace S3 is made as to P3, the first sealing lip 13b and the second sealing lip 13c are adjusted with respect to contact, the size of slit 13a1, the shape of oil thrower 12 respectively, to meet as much as possible following formula.
P1≥P2＞P3
As the authorized pressure P1 of the release pressure of slit 13a1, except setting the shape etc. of slit 13a1, also by the supply pressure of mist of oil, the first sealing lip 13b, with respect to the contact of oil thrower 12 etc., decided.In addition, the first sealing lip 13b does not need to carry out the release of pressure.Therefore, the first sealing lip 13b, with respect to the contact of oil thrower 12, need to carry out like that the situation of the release of pressure and compare with above-mentioned conventional example, can access the mode of higher sealing, set.
In addition, for the second sealing lip 13c, even if form authorized pressure P2, meet above-mentioned formula, and inner loop component 3 moves axially relatively with outer coil component 2, be also set to shape, the contact of the relation of the pressure that can remain above-mentioned.
More specifically, in the present embodiment, if the pressure P as atmospheric space outerpace S3 3 is made as to reference pressure, in the mode of become+10～20kPa of authorized pressure P1, become+5～10kPa of authorized pressure P2, set each portion.
In addition, in the present embodiment, exhaust port 11c is communicated with the second annulus S2 forming between the first sealing lip 13b and the second sealing lip 13c.Thus, near situation foreign matter intrusion exhaust port 11c is suppressed by the second sealing lip 13c.Even invade the second annulus S2 just in case there is foreign matter, also because the front end from the second sealing lip 13c is to exhaust port 11c, in the distance axially having to a certain degree, so passed through the above-mentioned foreign matter of the front end of the second sealing lip 13c, can not approach exhaust port 11c at once.Its result, can suppress foreign matter and invade in the first ring-type space S 1 from exhaust port 11c.Even if foreign matter arrives near exhaust port 11c, according to said structure, by being provided with the base portion 13a as cap of slit 13a1, also can allow the release of the pressure in the first ring-type space S 1, and suppress foreign matter and invade in the first ring-type space S 1 from exhaust port 11c.
In addition, the present invention is not limited to the respective embodiments described above.In the above-described embodiment, though be situation cylindraceous and carried out illustration making exhaust port 11c form section, it is quadrangle form, elliptical shape etc. that its section shape can suitably change to section.In addition, in the above-described embodiment, though represented that the base portion 13a of sealed member 13 brings into play the situation of function as closing the cap of exhaust port 11c, also can become the not structure of this cap.But, in this case, because the first ring-type space S 1 and the second annulus S2 become roughly the same pressure, so if the pressure of the first ring-type space S 1 surpasses the authorized pressure P2 as the release pressure of the second sealing lip 13c, the second sealing lip 13c is from oil thrower 12 separation, thereby makes the pressure in the first ring-type space S 1 be released into space outerpace S3 by exhaust port 11c and the second annulus S2.
In addition, in the above-described embodiment, though represented to make to be formed at the situation that the slit 13a1 of base portion 13a forms straight line shape, for example, can form two slits are intersected, also can form and make many slit 13a1 side by side.And, also can suitably adjust the thickness of slit 13a1.
In addition, in the above-described embodiment, for example, though only represented that the inner side end 11b side metal-cored 11 makes base portion 13a as the situation of cap, as shown in Figure 4, also can also arrange the cap that is formed with slit 13a1 in metal-cored 11 outside end face 11a side.In this case, the cap of outside end face 11a side is by the first sealing lip 13b is formed with the joint 13d that the second sealing lip 13c is connected.As above, by the both ends of the surface 11a metal-cored 11,11b, cap is set, can more effectively suppresses foreign matter and invade the first ring-type space S 1.
According to rolling bearing system of the present invention and the roller mill support roll that uses this rolling bearing system, can suppress the change of the pressure in the space between inner ring, outer ring, and can more effectively suppress foreign matter and invade in above-mentioned space.
Claims (4)
1. a rolling bearing system, is characterized in that, possesses:
Inner ring, it has inner race track face at outer circumferential face;
Outer ring, it is configured to described inner ring concentric, and has and the opposed outer race track face of described inner race track face at inner peripheral surface;
A plurality of rolling elements, they can rollably be disposed between described inner race track face and described outer race track face; And
A pair of seal arrangement, they are arranged at the axial two ends of described inner ring and described outer ring, the first space of being delimited by described inner ring outer circumferential face and described outer ring inner peripheral surface are sealed,
By the vaporific lubricant oil forced feed being mixed with gas in described the first space,
Described seal arrangement possesses:
Ring-type metal-cored, it is fixed on any one party of described inner ring and outer ring;
The oil thrower of ring-type, its be fixed on any the opposing party of described inner ring and outer ring and with respect to described metal-cored arranged opposite in axial outside;
The first sealing lip, its be arranged at highlightedly described metal-cored axial outside side end face and with described oil thrower sliding contact, thereby the axial end portion opening in described the first space is sealed; And
The second sealing lip, it is arranged at than described the first sealing lip more by radial outside, be arranged at highlightedly described metal-cored described side end face and with described oil thrower sliding contact, thereby together described the first space is sealed with described the first sealing lip, and and described the first sealing lip between form second space
At the described metal-cored exhaust port that is provided with, described exhaust port is communicated with between described the first space and described second space,
Described the second sealing lip has pressure control function,, if the pressure in described the first space surpasses authorized pressure, described the second sealing lip is separated from described oil thrower, make the pressure in described the first space be released into space outerpace by described exhaust port and described second space, thereby the state of described the first sealing lip and described oil thrower sliding contact is maintained.
2. rolling bearing system according to claim 1, is characterized in that,
Also possess the cap of closing described exhaust port,
If the pressure in described cap is provided with described the first space surpasses the slit of opening of authorized pressure.
3. rolling bearing system according to claim 2, is characterized in that,
Described the first sealing lip, described the second sealing lip and described cap form as one by elastic material.
4. a roller mill support roll, it is characterized in that, possesses rolling bearing system, described rolling bearing system can rollably contact with the outer circumferential face that rolled material is carried out to the work roll of rolling, thereby support described work roll, wherein, described rolling bearing system is the rolling bearing system described in any one in claim 1～3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-005367 | 2013-01-16 | ||
| JP2013005367A JP6070202B2 (en) | 2013-01-16 | 2013-01-16 | Rolling bearing device and rolling roll backup roll using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925297A true CN103925297A (en) | 2014-07-16 |
| CN103925297B CN103925297B (en) | 2018-10-26 |
Family
ID=51143625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410014264.2A Expired - Fee Related CN103925297B (en) | 2013-01-16 | 2014-01-13 | Rolling bearing system and roller mill backing roll using the rolling bearing system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6070202B2 (en) |
| KR (1) | KR102153439B1 (en) |
| CN (1) | CN103925297B (en) |
| TW (1) | TWI606195B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108350947A (en) * | 2015-11-12 | 2018-07-31 | Ntn株式会社 | Roller bearing unit |
| CN108884874A (en) * | 2016-03-30 | 2018-11-23 | 舍弗勒技术股份两合公司 | Sealing device for wheel bearing |
| CN108980212A (en) * | 2018-09-26 | 2018-12-11 | 天津包博特密封科技有限公司 | A kind of dust-proof grease proofing sealing ring for traction machine bearing |
| CN109958719A (en) * | 2017-12-26 | 2019-07-02 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN111566368A (en) * | 2017-10-14 | 2020-08-21 | 伊诺-斯宾有限责任公司 | Roll forming method for manufacturing roller bearing seal shell |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015224418A1 (en) * | 2015-12-07 | 2017-06-08 | Schaeffler Technologies AG & Co. KG | Seal with protective / centrifugal and sealing washer for sealing multi-row roller bearings for rolling mill stands |
| JP7114239B2 (en) * | 2017-10-30 | 2022-08-08 | ナブテスコ株式会社 | Device with sealing mechanism |
| CN112460261A (en) * | 2020-11-05 | 2021-03-09 | 人本股份有限公司 | Sealing structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5813675A (en) * | 1995-10-31 | 1998-09-29 | The Timken Company | Multibarrier seal |
| CN101428295A (en) * | 2008-12-01 | 2009-05-13 | 燕山大学 | Micro-scale static four-high mill |
| CN101868639A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device, rolling bearing, and rolling bearing for wheel |
| CN101868661A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device |
| CN101868660A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device, rolling bearing, and rolling bearing for wheel |
| CN102562816A (en) * | 2010-12-24 | 2012-07-11 | 株式会社捷太格特 | Sealing device and rolling bearing device provided with sealing device |
| JP5046185B2 (en) * | 2007-11-26 | 2012-10-10 | 株式会社ジェイテクト | Hub unit for vehicles |
| CN202579643U (en) * | 2011-03-28 | 2012-12-05 | 株式会社捷太格特 | Rolling bearing |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342675Y2 (en) * | 1974-07-10 | 1978-10-14 | ||
| JP4641348B2 (en) | 2001-02-05 | 2011-03-02 | 光洋シーリングテクノ株式会社 | Sealing device for rolling mill roll bearing |
| JP3976607B2 (en) | 2002-04-15 | 2007-09-19 | 光洋シーリングテクノ株式会社 | Sealing device for continuous casting machine roll neck |
| JP2004019819A (en) | 2002-06-18 | 2004-01-22 | Nsk Ltd | Rolling bearing and transmission |
| JP2004278660A (en) * | 2003-03-14 | 2004-10-07 | Nsk Ltd | Outer ring revolving type rolling bearing |
| JP2005140147A (en) | 2003-11-04 | 2005-06-02 | Ntn Corp | Outer ring rotation-type rolling bearing |
| JP2008223966A (en) * | 2007-03-15 | 2008-09-25 | Nsk Ltd | Rolling bearing |
| JP2008256204A (en) * | 2007-03-15 | 2008-10-23 | Nsk Ltd | Rolling bearing |
| JP2008223965A (en) * | 2007-03-15 | 2008-09-25 | Nsk Ltd | Rolling bearing |
| JP2009063096A (en) * | 2007-09-06 | 2009-03-26 | Nsk Ltd | Rolling bearing |
| JP2012047297A (en) * | 2010-08-27 | 2012-03-08 | Ntn Corp | Bearing device |
-
2013
- 2013-01-16 JP JP2013005367A patent/JP6070202B2/en not_active Expired - Fee Related
-
2014
- 2014-01-08 KR KR1020140002244A patent/KR102153439B1/en active IP Right Grant
- 2014-01-09 TW TW103100806A patent/TWI606195B/en not_active IP Right Cessation
- 2014-01-13 CN CN201410014264.2A patent/CN103925297B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5813675A (en) * | 1995-10-31 | 1998-09-29 | The Timken Company | Multibarrier seal |
| CN101868639A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device, rolling bearing, and rolling bearing for wheel |
| CN101868661A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device |
| CN101868660A (en) * | 2007-11-20 | 2010-10-20 | 株式会社捷太格特 | Sealing device, rolling bearing, and rolling bearing for wheel |
| JP5046185B2 (en) * | 2007-11-26 | 2012-10-10 | 株式会社ジェイテクト | Hub unit for vehicles |
| CN101428295A (en) * | 2008-12-01 | 2009-05-13 | 燕山大学 | Micro-scale static four-high mill |
| CN102562816A (en) * | 2010-12-24 | 2012-07-11 | 株式会社捷太格特 | Sealing device and rolling bearing device provided with sealing device |
| CN202579643U (en) * | 2011-03-28 | 2012-12-05 | 株式会社捷太格特 | Rolling bearing |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108350947A (en) * | 2015-11-12 | 2018-07-31 | Ntn株式会社 | Roller bearing unit |
| CN108884874A (en) * | 2016-03-30 | 2018-11-23 | 舍弗勒技术股份两合公司 | Sealing device for wheel bearing |
| CN108884874B (en) * | 2016-03-30 | 2020-09-01 | 舍弗勒技术股份两合公司 | Sealing device for wheel bearing |
| US11162536B2 (en) | 2016-03-30 | 2021-11-02 | Schaeffler Technologies AG & Co. KG | Sealing arrangement of a wheel bearing |
| CN111566368A (en) * | 2017-10-14 | 2020-08-21 | 伊诺-斯宾有限责任公司 | Roll forming method for manufacturing roller bearing seal shell |
| CN109958719A (en) * | 2017-12-26 | 2019-07-02 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN109958719B (en) * | 2017-12-26 | 2022-07-22 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN108980212A (en) * | 2018-09-26 | 2018-12-11 | 天津包博特密封科技有限公司 | A kind of dust-proof grease proofing sealing ring for traction machine bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201437505A (en) | 2014-10-01 |
| JP6070202B2 (en) | 2017-02-01 |
| JP2014137090A (en) | 2014-07-28 |
| CN103925297B (en) | 2018-10-26 |
| KR102153439B1 (en) | 2020-09-08 |
| KR20140092765A (en) | 2014-07-24 |
| TWI606195B (en) | 2017-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103925297A (en) | Rolling bearing device and rolling mill supporting roll using the same | |
| EP2616698B1 (en) | Intershaft seal system for minimizing pressure induced twist | |
| CN104685273A (en) | Mechanical seal device | |
| US20090134583A1 (en) | Dual seal assembly | |
| IN2014CH02008A (en) | ||
| KR20140130631A (en) | Multi-port rotary joint | |
| NO20171424A1 (en) | Multi-way valve and multi-way valve skid thereof | |
| US9151328B2 (en) | Conical roller bearing | |
| EP3795829B1 (en) | Liquid spraying ring and refrigerant lubricating bearing assembly | |
| CN205639293U (en) | Spherical -roller bearing | |
| US20030094762A1 (en) | Segmented labyrinth seal assembly and method | |
| WO2017135352A1 (en) | Rolling-bearing seal member, and rolling bearing assembly | |
| US20090087128A1 (en) | Cage, production method for the cage, thrust roller bearing equipped with the cage | |
| CN207033982U (en) | Flanged formula double-row conical hub bearing | |
| US20170284392A1 (en) | Oil-free screw compressor and design method therefor | |
| CN101368598A (en) | Bearing retention method and apparatus | |
| JP2008223965A (en) | Rolling bearing | |
| CN203979134U (en) | Sealed type hub bearing | |
| JP3901874B2 (en) | Double row tapered roller bearing device | |
| JP2005061575A (en) | Rolling bearing | |
| EP3696434A1 (en) | Cooling structure for bearing device | |
| CN105545961A (en) | Low-noise deep groove ball bearing | |
| WO2018166391A1 (en) | Water pump bearing | |
| CN105195428A (en) | Air-tight seal dustproof device on horizontal airflow sieve | |
| JP2009041656A (en) | Rolling bearing device and method of filling grease to rolling bearing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 Termination date: 20220113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |