CN107420434A - Bearing arrangement and sealing device - Google Patents

Bearing arrangement and sealing device Download PDF

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Publication number
CN107420434A
CN107420434A CN201710235540.1A CN201710235540A CN107420434A CN 107420434 A CN107420434 A CN 107420434A CN 201710235540 A CN201710235540 A CN 201710235540A CN 107420434 A CN107420434 A CN 107420434A
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CN
China
Prior art keywords
roller
inner ring
contact site
pad
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
Application number
CN201710235540.1A
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Chinese (zh)
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CN107420434B (en
Inventor
杉孝时
丸野航
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JTEKT Corp
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JTEKT Corp
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Filing date
Publication date
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Publication of CN107420434A publication Critical patent/CN107420434A/en
Application granted granted Critical
Publication of CN107420434B publication Critical patent/CN107420434B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • 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
    • 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
    • F16C19/26—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 a single row 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—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
    • 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
    • F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
    • 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
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C33/80—Labyrinth sealings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Gasket Seals (AREA)

Abstract

Bearing arrangement and sealing device are provided.Bearing arrangement (7) includes：Bearing main body (10), there is inner ring (11), tubular outer ring member (12), cylindrical roller (13) and the shaft housing (14) of the minor diameter axle portion (4) that pestle shape roller (3) is assembled to from outside；With the sealing structure body (30) for preventing that water is externally entering.Sealing structure body (30) has：Labyrinth ring (31), a part for labyrinth ring are assembled in the middle recessed circumferential grooves (6) formed in the major diameter portion (5) of roller (3) so as to form labyrinth clearance；With pad (51), the axial side (16) of inner ring (11) is attached to, contacts a part for roller (3), and prevents water to be externally entering the part between inner ring (11) and roller (3).Sealing device is to prevent water to be externally entering the part in the axial side, and bearing arrangement enables roller to be rotated relative to shaft housing, and sealing device includes：Main part, it is attached to the attachment channels formed in axial side；Contact site, on the roller side of main part, a part for roller can be contacted.

Description

Bearing arrangement and sealing device
Technical field
The present invention relates to a kind of bearing arrangement, the bearing arrangement supports pestle shape roller in a manner of enabling roller to rotate (pestle-shaped roll), and it is related to a kind of sealing device being arranged in this bearing arrangement.Notice that pestle shape exists It is meant here that the cylindrical shape with the central portion to narrow.
Background technology
For the driven roller of the continuously casting machine used in process for making, as shown in Figure 11, in order to suppress heavy The deflection of pestle shape roller caused by heavy duty, employ a kind of small diameter shaft for the centre that roller 90 is supported on using bearing arrangement 99 The construction in portion 91.In order to obtain this construction, inner ring 95 in bearing arrangement 99, outer ring member 94, shaft housing 93 etc. are arranged on Each is respectively provided with the structure that can be separated into two.
The cooling agent in the upper of bearing arrangement 99 for continuously casting machine.Therefore, in order to prevent cooling agent from Position between bearing arrangement 99 and the major diameter portion 92 of roller 90 enters in Bearing inner etc., and bearing arrangement 99 is provided with labyrinth ring 98 With oil seal 97 (see Japan patent applicant announce JP 2014-231876 (JP2014-231876A)).It is shown in fig. 11 Bearing arrangement 99 in, pad (packing) 96 further is set on the side of oil seal 97.
Figure 12 is the sectional view for the right part for partly showing the bearing arrangement 99 shown in Figure 11.When labyrinth ring 98 When being partly into recessed circumferential grooves 92a, labyrinth ring 98 forms recessed in labyrinth ring 98 and major diameter portion 92 in roller 90 Enter between circumferential grooves 92a and form labyrinth clearance.In this way, labyrinth ring 98 inhibits foreign matter such as cooling agent to enter from outside Between the neck 90a and inner ring 95 of roller 90 (in gap 100).Meanwhile labyrinth ring 98, oil seal 97 and pad 96 prevent Foreign matter such as cooling agent enters between inner ring 95 and outer ring member 94 (in Bearing inner) from outside.
As shown in Figure 12, because roller 90 (see Figure 11) is relative to the labyrinth ring in the state of being fixed with shaft housing 93 98 rotations, so gap is arranged between labyrinth ring 98 and roller 90 (recessed circumferential grooves 92a), and the entrance of cooling agent by This can be suppressed.However, it can not fully prevent the entrance of cooling agent.
Therefore, cooling agent is possibly into the gap 100 between the neck 90a of roller 90 and the axial side 95a of inner ring 95, And the cooling agent entered may gather in gap 100, this turns into the reason for causing corrosion.If such as in this state Bearing arrangement 99 is persistently used, then roller 90 may be damaged from this erodable section as initial point.
The content of the invention
More than in view of, the present invention provides：It is a kind of can be by preventing from gathering and anti-in the gap including water between ring and roller The bearing arrangement only corroded；With a kind of sealing device for preventing corrosion.
The first aspect of the present invention is a kind of bearing arrangement, and the bearing arrangement includes：Bearing main body, the bearing main body With inner ring, tubular outer ring member, multiple rolling elements and shaft housing, the inner ring is assembled to the minor diameter of pestle shape roller from outside Axle portion, the pestle shape roller have the minor diameter axle portion and major diameter portion, and the tubular outer ring member is arranged on the inner ring Radial outside on, the multiple rolling element is arranged between the inner ring and the outer ring member, the shaft housing branch Support the outer ring member；With sealing structure body, the sealing structure body prevents water is externally entering from rolling member provided with described In the Bearing inner of part and part between the inner ring and the roller.The sealing structure body has：Labyrinth ring, institute State labyrinth ring and the bearing main body is attached on the radial outside of the inner ring, a part for the labyrinth ring is filled Be fitted in the recessed circumferential grooves formed in the major diameter portion of the roller, and the labyrinth ring in the labyrinth ring and Labyrinth clearance is formed between the recessed circumferential grooves；And pad, it is described to pad the axial side for being attached to the inner ring, institute State a part for roller described in gasket contacts, and the pad prevents the water from outside entering from described in the inner ring and described In the part between roller.
According to this bearing arrangement, the part of the gasket contacts roller of the axial side of inner ring is attached to, and is thus prevented Sealing is externally entering in the part between inner ring and roller.Therefore, it is possible to by preventing water between these inner ring and roller Gathered in gap and prevent to corrode.
It can be constructed such that according to the bearing arrangement of first aspect：The axial side of the inner ring is from the radial direction Outside, which is risen, sequentially to be had：Annular surface, the annular surface are located in the virtual surface orthogonal with the center line of the inner ring； Curved surfaces, the diameter of the curved surfaces reduce towards axially center；And cylinderical surface, the cylinderical surface are assembled To the minor diameter axle portion, annular attachment channels are provided at least at the curved surfaces of the axial side of the inner ring In, and the pad has：Main part, the main part are attached to the attachment channels；And contact site, the contact site It is arranged on the roller side of the main part, and the contact site can contact the roller.Using this construction, construction causes Pad is attached to the curved surfaces of inner ring, and also construction causes in the part that pad is blocked between pad and the neck of roller Water.In addition, annular surface can be used during the processing of inner ring.
It can be constructed such that according to the bearing arrangement of first aspect：The axial side of the inner ring is from the radial direction Outside, which is risen, sequentially to be had：Annular attachment channels；Curved surfaces, the diameter of the curved surfaces reduce towards axially center；With Cylinderical surface, the cylinderical surface is mounted to the minor diameter axle portion, and the pad has：Main part, it is described Main part is attached to the attachment channels；First contact site, first contact site are arranged on the labyrinth of the main part On ring side, and first contact site can be with the inner peripheral surface sliding contact of the labyrinth ring；It is described with the second contact site Second contact site is arranged on the roller side of the main part, and second contact site can contact the roller.Utilize this Kind construction, except the function of preventing water to be externally entering in the part between inner ring and roller, pad can also have prevent water The function of entering from the part between labyrinth ring and inner ring.In other words, one pad can stop water with two Function.
It can be constructed such that with upper bearing equipment：The attachment channels include：The cylinder faced with the radial outside Shape surface；And with the axially external annular surface faced, and the pad has a quadrangular cross section, the pad outside All portions are used as first contact site, and the axial side of the pad is used as second contact site.In such configuration, Pad has simple shape, and this can simplify sealing structure body.It can be constructed such that with upper bearing equipment：Attachment channels Have：First groove portion on axially external；It is adjacent with the first groove portion with second groove portion, the second groove portion Ground is set, and the channel bottom in the second groove portion has small straight of diameter of the channel bottom than the first groove portion Footpath, and the pad has：It is mounted to the main part in the first groove portion and the second groove portion；With from institute State main part and extend to first contact site that the mode of the radial outside is set；With to extend to institute from the main part State second contact site that axially external mode is set.In such configuration, pad is mounted to first groove portion and the Two grooves, and therefore can realize the stable attached state of pad.
It can be constructed such that according to the bearing arrangement of first aspect：The axial side of the inner ring is from the radial direction Outside, which is risen, sequentially to be had：Annular attachment channels；Annular surface, the annular surface is positioned at orthogonal with the center line of the inner ring Virtual surface on；Curved surfaces, the diameter of the curved surfaces reduce towards axially center；And cylinderical surface, the circle Cylindrical surface is mounted to the minor diameter axle portion, and the pad has：Main part, the main part are attached to described Attachment channels, and the main part covers the annular surface；First contact site, first contact site are arranged on described On the labyrinth ring side of main part, and first contact site can be with the inner peripheral surface sliding contact of the labyrinth ring；With Two contact sites, second contact site are arranged on the roller side of the main part, and second contact site can contact The roller.In the situation of this construction, except the function of preventing water to be externally entering in the part between inner ring and roller, lining Pad can also have the function of preventing that water from entering from the part between labyrinth ring and inner ring.In other words, one pad energy Enough there is the function of two stop water.In addition, annular surface can be used during the processing of inner ring.
The second aspect of the present invention is a kind of sealing device, and the sealing device is arranged on the axle of the inner ring of bearing arrangement Into sidepiece, so as to prevent water to be externally entering in the part between the inner ring and pestle shape roller.The bearing arrangement is pacified In the minor diameter axle portion of the roller, so as to support the roller as follows, the mode enables the roller relative Rotated in shaft housing.Sealing device has：Main part, the main part are attached in the axial side of the inner ring The attachment channels of formation；And contact site, the contact site are arranged on the roller side of the main part, and the contact site energy Enough contact a part for the roller.This sealing device is attached to the axial side of inner ring, contacts the part of roller, and by This prevents water to be externally entering in the part between inner ring and roller.Therefore, it is possible to by prevent water these inner ring and roller it Between gap in gather and prevent to corrode.
According to the above, it is attached to the gasket contacts roller of inner ring and thus prevents water to be externally entering in these inner ring In part between roller.Therefore, it is possible to by preventing from gathering to prevent in gap of the water between these inner ring and roller Corrosion.
Brief description of the drawings
Feature, advantage and the technology and industrial significance of the example embodiment of the present invention will be described below with reference to accompanying drawing, Wherein same reference represents same element, and wherein：
Fig. 1 is cuing open for an example of the bearing arrangement for including the sealing structure body with the first embodiment of the present invention View；
Fig. 2 is the sectional view of a part for the bearing arrangement and roller shown in Fig. 1；
Fig. 3 is the sectional view of the pad shown in Fig. 1 and Fig. 2；
Fig. 4 is the sectional view of the variation example of the pad shown in Fig. 3；
Fig. 5 is the sectional view of a part for bearing arrangement and roller, and the bearing arrangement includes the sealing with second embodiment Structural body；
Fig. 6 is the sectional view of the pad shown in Fig. 5；
Fig. 7 is the sectional view of the variation example of the pad shown in Fig. 5；
Fig. 8 is the sectional view of the pad shown in Fig. 7；
Fig. 9 is the sectional view of a part for bearing arrangement and roller, and the bearing arrangement includes the sealing with 3rd embodiment Structural body；
Figure 10 is the sectional view of the pad shown in Fig. 9；
Figure 11 is the sectional view of traditional bearing device；And
Figure 12 is the sectional view for the right part for partly showing the bearing arrangement shown in Figure 11.
Embodiment
Hereinafter it will be illustrated based on drawing for embodiments of the invention.Fig. 1 is to include the with the present invention The sectional view of one example of the bearing arrangement of the sealing structure body of one embodiment.This bearing arrangement 7 is supported for driving The roller 3 of the continuously casting machine used in process for making.Roller 3 has the He of minor diameter axle portion 4 in centre with integral manner The axially major diameter portion 5 on both sides, and roller 3 is pestle shape.Because minor diameter axle portion 4 has smaller than major diameter portion 5 Diameter, so formed between each the major diameter portion 5 of annular recess in minor diameter axle portion 4 and paired major diameter portion 5,5, And bearing arrangement 7 is arranged in this annular recess.Hereinafter, the side between minor diameter axle portion 4 and major diameter portion 5 Boundary is also by the neck 3a referred to as roller 3.Neck 3a has what its diameter was gradually reduced from major diameter portion 5 towards minor diameter axle portion 4 Recessed curved surface shape (tapered surface shape).Annular recesses circumferential grooves 6 are formed in the inner surface in major diameter portion 5.
The center line L0 of roller 3 is consistent with the center line L1 of bearing arrangement 7, and the direction parallel with center line L1 (L0) will Hereinafter defined as axial direction.In addition, radial direction will be defined as by being orthogonal to the direction of this axial direction.Form Each of bearing arrangement 7 such as center line of inner ring 11 is consistent with the center line L1 of bearing arrangement 7.Hereinafter, inner ring 11 center line will also be represented by L1.Fig. 1 is the sectional view in the perpendicular including center line L1 (L0).Institute in Fig. 1 In the cross section shown, the bearing arrangement 7 of this embodiment has on bearing arrangement 7 to be laterally divided into the vertical line of two Laterally symmetric construction.Hereinafter it will be illustrated for the local structure of the right part in Fig. 1；However, left part (though It is so symmetrical) have and right part identical construction.
Bearing arrangement 7 includes bearing main body 10 and sealing structure body 30.Bearing main body 10 includes inner ring 11, outer ring member 12nd, cylindrical roller (rolling element) 13 and shaft housing 14.Sealing structure body 30 be arranged on bearing main body 10 right side and There is identical construction (although symmetrical) on this both sides of left side and thereon.Sealing structure body 30 includes labyrinth ring 31st, oil seal 41 and pad (the first pad) 51.Sealing structure body 30 shown in Fig. 1 further comprises the second pad 69。
Shaft housing 14 has two-piece type isolating construction, is vertically separated shaft housing 14 by two-piece type isolating construction.More Body, shaft housing 14 has the pedestal 17 for being fixed to floor surface and the cover part 18 being placed on this pedestal 17, and They are coupled and are fixed to one another by unshowned bolt etc..In upper surface side, pedestal 17 has along the shape of sphere Spheric seat 17a.
Inner ring 11 has two-piece type isolating construction.More specifically, inner ring 11 has that each is respectively provided with semi-barrel shape shape Half portion 11b in half portion 11a and second in one, and these interior half portion 11a, 11b separation surface are positioned at including inner ring In 11 center line L1 plane.Interior half portion 11a, 11b are coupled and be fixed to one another, be integrally formed by unshowned bolts etc. Cylindrical part (inner ring 11), and assembling and be fixed in the state of the minor diameter axle portion 4 of roller 3 from outside.In inner ring 11 On exterior circumferential side, there is provided the interior raceway face 11c with cylindrical form.Inner ring 11 is also at two of interior raceway face 11c There is shoulder 20,20 on axial side.Shoulder 20,20 each there is the diameter bigger than interior raceway face 11c.
Fig. 2 is the sectional view for the right part for partly showing bearing arrangement 7 and roller 3 shown in Fig. 1.Outside shoulder 20 Perimeter surface 20a has the diameter bigger than interior raceway face 11c, and this outer surface 20a is provided with the first exterior circumferential ditch The exterior circumferential groove 76 of groove 71 and second.These exterior circumferential grooves 71,76 each be ring-shaped groove.First exterior circumferential ditch Groove 71 is the groove for being attached oil seal 41, and the second exterior circumferential groove 76 is the ditch for being attached the second pad 69 Groove.
In Fig. 1, outer ring member 12 passes through two-piece type on the whole with cylindrical shape but with two-piece type isolating construction Isolating construction is vertically separated outer ring member 12.More specifically, outer ring member 12 with each with semi-barrel shape shape first outside Half portion 12b outside half portion 12a and second, and these outer half portion 12a, 12b separation surface are positioned at including outer ring member In the plane of 12 center line.Pay attention to, in the assembled state, the center line of outer ring member 12 and the center line L1 mono- of inner ring 11 Cause.Outer half portion 12a, 12b are coupled and are fixed to one another by unshowned bolt etc., and are integrally formed cylindrical part (tubular Outer ring member 12).On the internal circumferential side of outer ring member 12, there is provided the outer raceway face 12c with cylindrical form.First Outer half portion 12a forms the lower half of outer ring member 12, and on the pedestal 17 for be placed on shaft housing 14 in the state of.The Half portion 12a lower surface has the shape corresponding to spheric seat 17a outside one, and is used as being placed on putting on spheric seat 17a Put surface.On upside second outside half portion 12b and shaft housing 14 cover part 18 be integral.
Cylindrical roller 13 by intervention between raceway face 11c and outer raceway face 12c.In this way, the He of inner ring 11 Outer ring member 12 is coaxially arranged.When roller 3 and inner ring 11 integratedly rotate, cylindrical roller 13 causes interior raceway face 11c and outer raceway face 12c rolling.
Using the construction so far having been described above, by including：It is assembled to from outside in the minor diameter axle portion 4 of pestle shape roller 3 Ring 11；The outer ring member 12 for the cylindrical shape being arranged on the radial outside of this inner ring 11；Each is arranged on inner ring 11 Multiple cylindrical rollers 13 between outer ring member 12；Bearing main body is constructed with the shaft housing 14 of support outer ring member 12 10.This bearing arrangement 7 is separate type.
Labyrinth ring 31 is cylindrical part but has two-piece type isolating construction, and fan is vertically separated by two-piece type isolating construction Palace ring 31.More specifically, labyrinth ring 31 is with each the first half portion 31a with semi-barrel shape shape and the second half portion 31b, And these half portion 31a, 31b separation surface are located in the plane for the center line for including labyrinth ring 31.Pay attention in assembling shape Under state, the center line of labyrinth ring 31 is consistent with the center line L1 of inner ring 11.Form the first half portions of the lower half of labyrinth ring 31 31a is attached to shaft housing 14 (pedestal 17), and the second half portion 31b for forming the first half of labyrinth ring 31 be attached to it is outer Ring component 12 (outer half portion 12b).
Labyrinth ring 31 on the first axial side (right side in Fig. 1) protrudes from bearing main body 10 towards the first axial side, And a part (outside axial part 31c) for labyrinth ring 31 is being placed on the recessed circumference to be formed in the major diameter portion 5 in roller 3 In the state of in groove 6.As shown in FIG. 2, when labyrinth ring 31 the part (outside axial part 31c) be placed on it is recessed When in the state of in circumferential grooves 6, labyrinth clearance is in the part (outside axial part 31c) of labyrinth ring 31 and recessed circumferential grooves Formed between 6, entered which suppress cooling agent from outside in the part between the neck 3a of roller 3 and inner ring 11.Meanwhile Labyrinth ring 31 on two axial sides (left side in Fig. 1) protrudes from bearing main body 10 towards the second axial side, and labyrinth ring 31 The part (outside axial part 31c) be placed on the shape to be formed in the recessed circumferential grooves 6 in the major diameter portion 5 in roller 3 Under state.Similar to the first axial side, equally on the second axial side, when the part (outside axial part 31c) of labyrinth ring 31 exists When in the state of being placed in recessed circumferential grooves 6, labyrinth clearance in the part (outside axial part 31c) of labyrinth ring 31 and Formed between recessed circumferential grooves 6, which suppress the part that cooling agent enters between the neck 3a of roller 3 and inner ring 11 from outside In.Using the construction so far having been described above, when labyrinth ring 31 is attached to bearing main body 10 on the radial outside of inner ring 11, and This of inner ring 11 is partially disposed within when being formed in this recessed circumferential grooves 6 in the major diameter portion 5 of pestle shape roller 3, labyrinth Ring 31 is the part that labyrinth clearance is formed between labyrinth ring 31 and recessed circumferential grooves 6.
In fig. 2, oil seal 41 has annular seal body portion 42 and the sealing protruded from this sealed body portion 42 Lip 43, and they are made up of rubber.Sealed body portion 42 is mounted to the first exterior circumferential groove 71 of inner ring 11.Sealing Lip 43 can also contact the inner peripheral surface 32 of labyrinth ring 31.When roller 3 and inner ring 11 rotate, oil seal 41 rotates together, And the inner peripheral surface 32 of sealed lip 43 and labyrinth ring 31 forms sliding contact.Oil seal 41 on the whole have ring-shaped but It is to be cut in circumferential portion, this is easy to that oil seal 41 is attached into inner ring 11 using isolating construction.As described above, oil is close Sealing 41 is when the first exterior circumferential groove 71 and and the labyrinth ring that are attached on the exterior circumferential side for being arranged on inner ring 11 31 inner peripheral surface 32 forms the part for preventing that cooling agent from entering in Bearing inner 15 during sliding contact.
It will be illustrated firstly for the second pad 69.Second pad 69 has ring liner main part 44 and served as a contrast from this Pad the liner lip 45 that main part 44 protrudes.Gasket body portion 44 is assembled and is attached to the second exterior circumferential ditch of inner ring 11 Groove 76.Liner lip 45 can contact the inner peripheral surface 32 of labyrinth ring 31.When roller 3 and inner ring 11 rotate, the second pad 69 1 Rotation is played, and liner lip 45 and the inner peripheral surface 32 of labyrinth ring 31 form sliding contact.Second pad 69 can be on the whole It is made up of rubber, but liner lip 45 can be formed from a resin to reduce contact resistance.In addition, the second pad 69 has on the whole There is ring-shaped but be cut in circumferential portion, this is easy to that the second pad 69 is attached into inner ring 11 using isolating construction.Such as Upper described, the second pad 69 is to work as the second exterior circumferential groove 76 being attached on the exterior circumferential side for being arranged on inner ring 11 simultaneously And form the part for preventing cooling agent from entering in Bearing inner 15 during sliding contact with the inner peripheral surface 32 of labyrinth ring 31.
, will be for this before the first pad 51 (hereinafter also referred to simply as pad 51) shown in description Fig. 2 The shape for the axial side 16 that individual pad 51 is attached to this inner ring 11 illustrates.It is interior in fig. 2 in shown embodiment The axial side 16 of ring 11 sequentially has annular surface 21, the and of curved surfaces 22 with prominent cross section from radial outside Cylinderical surface 23.Annular surface 21 is the ring on the virtual surface F1 orthogonal (see Fig. 1) with the center line L1 of inner ring 11 Shape surface.Curved surfaces 22 are continuously formed from annular surface 21 and with the central (left sides in Fig. 2 in its diameter direction axial direction Side) reduce protrusion curved surface shape (tapered surface shape).Pay attention to, in fig. 2 in shown embodiment, curved surfaces 22 With between curved surfaces 22 and annular surface 21 and in the virtual surface orthogonal with the center line L1 of inner ring 11 The second annular surface 22a.Prominent curved surface shape is since this second annular surface 22a.Cylinderical surface 23 is from arc Shape surface 22 is continuously formed, and with the cylinderical surface centered on center line L1.In this cylinderical surface 23, Inner ring 11 is mounted to the minor diameter axle portion 4 of roller 3.
In the axial side 16 of the inner ring 11 with this shape, curved surfaces 22 are provided with the ring for being used for the first pad 51 Shape attachment channels 72.Attachment channels 72 shown in Fig. 2 have：In face of the cylinderical surface 72a of radially inner side；With in face of axial direction Outside and the annular surface 72b being arranged in the scope of curved surfaces 22.
Fig. 3 is the sectional view of the pad 51 shown in Fig. 1 and Fig. 2.In figure 3, inner ring 11 and roller 3 are (double using imaginary line Chain-dotted line) signal.Pad 51 has annular body portion 52 and ring shaped contact portion 53.Main part 52 is attached to attachment channels 72 Part, and contact site 53 is the part being arranged on from main part 52 in a manner of protruding on the side of roller 3.In figure 3, in main part 52 Illustrated using dotted line on border between contact site 53.Contact site 53 can contact the neck 3a of roller 3.Pad 51 is by rubber system Into, and the deformation of 51 elastic deformations is padded when contact site 53 contacts neck 3a.Under the assembled state of bearing arrangement 7, tight Edge Gu (fasteningmargin) is arranged in neck 3a, contact site 53 with neck 3a in the state of contacting.Work as roller During 3 rotation, inner ring 11 and pad 51 integratedly rotate with this roller 3.
Fig. 4 is the sectional view of the variation example of the pad 51 shown in Fig. 3.Pay attention to the shape of attachment channels 72 and in Fig. 3 Shown in embodiment in it is identical.Similar to the pad 51 shown in Fig. 3, the pad 51 shown in Fig. 4 has：It is attached to attached Connect the main part 52 of groove 72；Be arranged on from this main part 52 on the side of roller 3 and the neck 3a of roller 3 contact can be contacted Portion 53.However, the pattern of contact site 53 is different from the pattern shown in Fig. 3.More specifically, shown pad 51 in figure 3 While contact site 53 is arranged on the side of roller 3 by a part for the axially outer region from main part 52 in a manner of protruding, in Fig. 4 The contact site 53 of shown pad 51 is arranged on the side of roller 3 from the whole axially outer region of main part 52 in a manner of protruding.
Each has a ring-shaped on the whole for pad 51 shown in Fig. 3 and Fig. 4, but in this embodiment with inner ring 11 have two-piece type isolating construction together.For the ease of separated pad 51 is attached into the attachment formed in inner ring 11 Therefore groove 72, attachment channels 72 are constructed such that to be arranged in the main part 52 of pad 51 formed with recess 77 Projection 56 is mounted to recess 77.Recess 77 has independent hole shape, and multiple recesses 77 are formed along attachment channels 72, and convex 56 are played to be formed on pad 51 in a manner of with the position correspondence of these recesses 77.Pay attention to, similar to oil seal 41 and second Pad 69, the first pad 51 may be constructed such that and be cut in circumferential portion.
Using the construction so far having been described above, the pad 51 shown in Fig. 2 to Fig. 4 is attached to the axial side of inner ring 11 16, and can prevent cooling agent from entering from outside between inner ring 11 and roller 3 when contacting a part (the neck 3a) of roller 3 In part.Especially, pad 51 is configured to be attached to the curved surfaces 22 of inner ring 11, and therefore can be blocked in pad 51 The cooling agent in part between the neck 3a of roller 3.
In addition, in embodiment shown in Fig. 2 to Fig. 4, attachment channels 72 are from the first exterior circumferential groove 71 (see Fig. 2) Positioned at the opening position on radially inner side, and it is constructed such that the first exterior circumferential groove 71 and attachment channels 72 do not exist Closer to each other or alignment on axial direction.If it is constructed so that described two grooves 71,72 connect each other in the axial direction Closely and it is aligned, then defective portion's increase caused by these grooves 71,72 in the axial side 16 of inner ring 11, this causes Strength deterioration.However, according to the embodiment shown in Fig. 2, this strength deterioration in axial side 16 can be prevented.
Pad 51 and attachment channels 72 can have the cross section in addition to shown in drawing with each.For example, In Fig. 3, one (one) contact site 53 is set from main part 52 to raise shape.However, it is possible to multiple contacts are set Portion 53.In addition, pad 51 can have circular cross sectional shape etc., and one part may be used as contact site 53.And then Through being illustrated for the situation only formed for attachment channels 72 in curved surfaces 22.However, attachment channels 72 can be with Part formation from curved surfaces 22 to annular surface 21 (22a), or can be from curved surfaces 22 to cylinderical surface 23 A part formation.In other words, annular attachment channels 72 need to be provided at least at the arc table of the axial side 16 of inner ring 11 In face 22.
In the situation of embodiment shown in Fig. 2 to Fig. 4, attachment channels 72 inner ring 11 axial side 16 (see figure 2) formed in, and annular surface 21 is remained on the virtual surface F1 orthogonal (see Fig. 1) with the center line L1 of inner ring 11.Energy It is enough that this annular surface 21 is used during the processing of inner ring 11.More specifically, when machining inner ring 11, this inner ring 11 Axial side 16 is kept by magnet chuck (although being not shown).During this processing, the axial side 16 of inner ring 11 needs to have There is the surface (radius that carries at least several millimeter) orthogonal with center line L1 for magnet chuck.Shown in Fig. 2 to Fig. 4 Embodiment in because annular surface 21 is arranged on the radial outside of attachment channels 72, this energy of annular surface 21 Enough it is used for magnet chuck.Therefore, it is possible to process inner ring 11 as in traditional mode.
Fig. 5 is the sectional view of the sealing structure body 30 with second embodiment.With the sealing structure body shown in Fig. 2 30 compare, and the sealing structure body 30 shown in Fig. 5 does not include the second pad 69.In Figure 5 in shown embodiment, institute Stating a pad 51 has the function of the first pad 51 and the second pad 69 shown in Fig. 2.Pay attention to remaining structure of bearing arrangement 7 Make identical with construction in the embodiment shown in fig. 1.
Before pad 51 shown in description Fig. 5, the axial direction of this inner ring 11 will be attached to for this pad 51 The shape of sidepiece 16 illustrates.In Figure 5 in shown embodiment, the axial side 16 of inner ring 11 order from radial outside Ground has attachment channels 72, curved surfaces 22 and cylinderical surface 23 with prominent cross section.Attachment channels 72 are annular ditch Groove and for be attached pad 51.Attachment channels 72 are included in face of the outer cylindrical surface 78 of radial outside and in face of axially external Annular surface 79.Curved surfaces 22 are continuously formed from attachment channels 72 and with its diameter direction axial direction center (in Fig. 5 Left side) reduce protrusion curved surface shape (tapered surface shape).Pay attention to, in Figure 5 in shown embodiment, arc table Face 22 can have between curved surfaces 22 and attachment channels 72 and be located at the void orthogonal with the center line L1 of inner ring 11 Intend the second annular surface on surface.Prominent curved surface shape can be since this second annular surface.Cylinderical surface 23 are continuously formed from curved surfaces 22, and with the cylinderical surface centered on center line L1.In this cylindrical shape table In face 23, inner ring 11 is mounted to the minor diameter axle portion 4 of roller 3.
Fig. 6 is the sectional view of the pad 51 shown in Fig. 5.In figure 6, labyrinth ring 31, inner ring 11 and roller 3 pass through imaginary line (double dot dash line) is illustrated.Pad 51 has annular body portion 52, the ring shaped contact portion 55 of first annular contact site 54 and second.Main body Portion 52 is attached to the part of attachment channels 72.First contact site 54 is that labyrinth is arranged in a manner of radially projecting from main part 52 Part on the side of ring 31.Second contact site 55 is the part being arranged on from main part 52 in a manner of axially projecting on the side of roller 3.Scheming In 6, the border between the contact site 54 of main part 52 and first and the border between the contact site 55 of main part 52 and second Each illustrates by a dotted line.First contact site 54 can form sliding contact with the inner peripheral surface 32 of labyrinth ring 31, and the Two contact sites 55 can contact roller 3.
Pad 51 has quadrangle (trapezoidal) cross section.The peripheral part of pad 51 is used as the first contact site 54, and pads 51 axial side is used as the second contact site 55.Pad 51 is made up of rubber, is served as a contrast when the first contact site 54 contacts labyrinth ring 31 Elastic deformation deforms pad 51 in radial directions, and the bullet in the axial direction of pad 51 when the second contact site 55 contacts roller 3 Property become deformation.Under the assembled state of bearing arrangement 7, when being arranged at fastening edge in labyrinth ring 31, the first contact site 54 with labyrinth ring 31 in the state of contacting, and fasten edge be arranged in roller 3 when, the second contact site 55 with roller 3 In the state of contact.When roller 3 rotates, inner ring 11 and pad 51 integratedly rotate with this roller 3.In the first contact site 54 and fan While palace ring 31 forms sliding contact, the situation of relative position change is not present with roller 3 between them for the second contact site 55 Lower formation contact condition.
In attachment channels 72, outer cylindrical surface 78 is the circle using the center line L1 (see Fig. 1) of inner ring 11 as center Cylindrical surface, and annular surface 79 tilts to outer cylindrical surface 78.Angle of inclination K is less than 90 degree.The main part of pad 51 52 have the inclined surface 52a contacted with this beveled annular surface 79 formation surface.Using this construction, can prevent from padding 51 come off to radial outside.
Fig. 7 is the sectional view of the variation example of the pad 51 shown in Fig. 5.Similar to the embodiment shown in Fig. 5, together Sample is in the figure 7 in shown embodiment, and one pad 51 has the first pad 51 shown in Fig. 2 and the second pad 69 Function.
Before pad 51 shown in description Fig. 7, the axial direction of this inner ring 11 will be attached to for this pad 51 The shape of sidepiece 16 illustrates.In the figure 7 in shown embodiment, the axial side 16 of inner ring 11 order from radial outside Ground has attachment channels 72, curved surfaces 22 and cylinderical surface 23 with prominent cross section.Attachment channels 72 are for attached Connect the ring-shaped groove of pad 51.Attachment channels 72 have the first groove portion 74 on axially external (right side in Fig. 7) and set Put the second groove portion 75 on the central side in the axial direction in this first groove portion 74.The channel bottom in second groove portion 75 has Than the less diameter of first groove portion 74 (in fig. 8, the diameter D2 ＜ first grooves portion 74 of the channel bottom in second groove portion 75 Channel bottom diameter D1).In the figure 7, curved surfaces 22 are continuously formed from attachment channels 72 and have its diameter court The prominent curved surface shape (tapered surface shape) reduced to axial central (left side in Fig. 7).Pay attention to, it is shown in the figure 7 Embodiment in, curved surfaces 22 have positioned at curved surfaces 22 and attachment channels 72 between and are located at center with inner ring 11 The second annular surface 22a in virtual surface orthogonal line L1.Prominent curved surface shape is opened from this second annular surface 22a Begin.Cylinderical surface 23 is continuously formed from curved surfaces 22, and with the cylinderical surface centered on center line L1. In this cylinderical surface 23, inner ring 11 is mounted to the minor diameter axle portion 4 of roller 3.
Fig. 8 is the sectional view of the pad 51 shown in Fig. 7.In fig. 8, labyrinth ring 31, inner ring 11 and roller 3 pass through imaginary line (double dot dash line) is illustrated.Pad 51 has annular body portion 52, the ring shaped contact portion 55 of first annular contact site 54 and second.Main body Portion 52 is attached to the part of attachment channels 72.First contact site 54 is that labyrinth is arranged in a manner of radially projecting from main part 52 Part on the side of ring 31.Second contact site 55 is the part being arranged on from main part 52 in a manner of axially projecting on the side of roller 3.Scheming In 8, the border between the contact site 54 of main part 52 and first and the border between the contact site 55 of main part 52 and second are every One is illustrated by a dotted line.First contact site 54 can form sliding contact, and second with the inner peripheral surface 32 of labyrinth ring 31 Contact site 55 can contact roller 3.
It will be described with pad 51.Pad 51 has：It is assembled to the main body in first groove portion 74 and second groove portion 75 Portion 52；From first contact site 54 of the main part 52 on radial outside；With by from main part 52 extend to it is axially external in a manner of The second contact site 55 set.Pad 51 is made up of rubber, and when the first contact site 54 contacts labyrinth ring 31, pad 51 is radially Elastic deformation deforms on direction, and elastic deformation deforms pad 51 in the axial direction when the second contact site 55 contacts roller 3. Under the assembled state of bearing arrangement 7, fasten edge be arranged in labyrinth ring 31 when, the first contact site 54 with labyrinth ring 31 contact in the state of, and fasten edge be arranged in roller 3 when, the second contact site 55 with roller 3 in the state of contacting. When roller 3 rotates, inner ring 11 and pad 51 integratedly rotate with this roller 3.Formed and slided with labyrinth ring 31 in the first contact site 54 While dynamic contact, the second contact site 55 is formed in the case of relative position change is not present between being them with roller 3 and contacted State.
Each has ring-shaped on the whole for pad 51 shown in Fig. 5 to Fig. 8, and can have together with inner ring 11 There is two-piece type isolating construction.However, in this embodiment, similar to oil seal 41, each pad 51 has in circumferential portion The construction being cut in point.
As so far having been described above, pad 51 shown in Fig. 5 to Fig. 8 each be attached to the axial side of inner ring 11 16, and can prevent when contacting a part (the major diameter portion 5) of roller 3 cooling agent from outside enter inner ring 11 and roller 3 it Between part in.And then except the function of preventing cooling agent from entering from outside in the part between inner ring 11 and roller 3, pad 51 can also each have prevent cooling agent between labyrinth ring 31 and inner ring 11 part enter function.In other words, One pad 51 can have the function of two stop cooling agents.Compared with the embodiment shown in Fig. 2, it is not provided with serving as a contrast Pad 69, and therefore the number of component reduces.In addition, in figure 6 in shown embodiment, as described above, pad 51 has four Side shape (trapezoidal) cross section.Correspondingly, pad 51 has simple shape, and this can simplify sealing structure body 30.In fig. 8 In shown embodiment, the main part 52 for padding 51 is mounted to first groove portion 74 and second groove portion with stairstepping 75.Therefore, padding 51 stable attached state can be achieved, and it comes off and can be suppressed.
Fig. 9 is the sectional view of the sealing structure body 30 with 3rd embodiment.With the sealing structure body shown in Fig. 2 30 compare, and the sealing structure body 30 shown in Fig. 9 does not include the second pad 69.It is described in fig.9 in shown embodiment One pad 51 has the function of the first pad 51 and the second pad 69 shown in Fig. 2.Pay attention to remaining construction of bearing arrangement 7 It is identical with construction in the embodiment shown in fig. 1.
Before pad 51 shown in description Fig. 9, the axial direction of this inner ring 11 will be attached to for this pad 51 The shape of sidepiece 16 illustrates.In fig.9 in shown embodiment, the axial side 16 of inner ring 11 order from radial outside Ground has attachment channels 72, annular surface 24, curved surfaces 22 and cylinderical surface 23 with prominent cross section.Attachment channels 72 be the ring-shaped groove for being attached pad 51.Annular surface 24 is positioned at orthogonal (see Fig. 1) with the center line L1 of inner ring 11 Annular surface on virtual surface F2.Curved surfaces 22 are continuously formed from annular surface 21 and with its diameter towards axially The protrusion curved surface shape (tapered surface shape) that central (left side in Fig. 9) reduces.Cylinderical surface 23 is from curved surfaces 22 are continuously formed, and with the cylinderical surface centered on center line L1.In this cylinderical surface 23, inner ring 11 It is mounted to the minor diameter axle portion 4 of roller 3.
Figure 10 is the sectional view of pad 51.In Fig. 10, (two point is drawn by imaginary line for labyrinth ring 31, inner ring 11 and roller 3 Line) signal.Pad 51 has annular body portion 52, the ring shaped contact portion 55 of first annular contact site 54 and second.Main part 52 is It is attached to attachment channels 72 and covers the part of annular surface 24 in the axial direction.First contact site 54 is from main part 52 The part being arranged in a manner of radially projecting on the side of labyrinth ring 31.Second contact site 55 be from main part 52 in a manner of axially projecting The part being arranged on the side of roller 3.In Fig. 10, the border between the contact site 54 of main part 52 and first and in main part 52 And the second border between contact site 55 each illustrate by a dotted line.First contact site 54 can be with the interior weekly form of labyrinth ring 31 Face 32 forms sliding contact, and the second contact site 55 can contact roller 3.
Pad 51 is made up of rubber, and when the first contact site 54 contacts labyrinth ring 31, elasticity becomes pad 51 in radial directions Deformation, and when the second contact site 55 contacts roller 3, elastic deformation deforms pad 51 in the axial direction.In bearing arrangement 7 Assembled state under, fastening edge be arranged in labyrinth ring 31 in the case of, the first contact site 54 connects with labyrinth ring 31 In the state of touching, and in the case where fastening edge and being arranged in roller 3, the second contact site 55 is in the state contacted with roller 3 Under.When roller 3 rotates, inner ring 11 and pad 51 integratedly rotate with this roller 3.Formed in the first contact site 54 with labyrinth ring 31 While sliding contact, the second contact site 55 is formed in the case of relative position change is not present between them with roller 3 and contacted State.
Pad 51 shown in Fig. 9 and Figure 10 has ring-shaped on the whole, and can have two together with inner ring 11 Part formula isolating construction.However, in this embodiment, similar to oil seal 41, each pad 51 has in circumferential portion In be cut construction.
As so far having been described above, this pad 51 is attached to the axial side 16 of inner ring 11, and when contact roller 3 It can prevent cooling agent from entering from outside in the part between inner ring 11 and roller 3 during part (the major diameter portion 5).And then remove The function of preventing cooling agent from entering from outside in the part between inner ring 11 and the roller 3, pad 51 can also each have The function of preventing cooling agent from entering from the part between labyrinth ring 31 and inner ring 11.In other words, one pad 51 can Function with two stop cooling agents.Compared with the embodiment shown in Fig. 2, pad 69, and therefore component are not provided with Number reduce.
Pay attention to, in figure 9 and in figure 10 in shown embodiment, the shape in axial side 16 of the attachment channels 72 in inner ring 11 Into while, further define the annular table on the virtual surface F2 orthogonal (see Fig. 1) with the center line L1 of inner ring 11 Face 24.This annular surface 24 can be used during the processing of inner ring 11.More specifically, when inner ring 11 is machined, this The axial side 16 of individual inner ring 11 is kept by magnet chuck (although being not shown).During this processing, the axial side of inner ring 11 Portion 16 is needed with the surface (radius that carries at least several millimeter) orthogonal with center line L1 for magnet chuck.In Fig. 9 In the situation of the embodiment shown in Figure 10, because annular surface 24 is arranged on the radially inner side of attachment channels 72, institute Magnet chuck can be used in this annular surface 24.Therefore, it is possible to process inner ring 11 as in traditional mode.
As so far having been described above, bearing arrangement 7 includes bearing main body 10 and sealing structure body 30.Bearing main body 10 It is installed in (see Fig. 1) in the minor diameter axle portion 4 of pestle shape roller 3 so as to support this roller 3 as follows so that roller 3 being capable of phase Rotated for shaft housing 14.Sealing structure body 30 has labyrinth ring 31, oil seal 41 and pad 51.According to this sealing knot Structure body 30, it can prevent cooling agent from entering from outside the Bearing inner 15 of cylindrical roller 13 is set and in inner ring 11 and roller In part between 3.More specifically, the oil seal 41 that is arranged in the axial side 16 of inner ring 11 contact labyrinth ring 31 and Thus prevent cooling agent from entering in Bearing inner 15.In addition, the pad 51 for being attached to the axial side 16 of inner ring 11 contacts roller 3 The part and thus prevent cooling agent from entering from outside in part between inner ring 11 and roller 3.As a result, it can pass through Prevent from gathering in gap 80 of the cooling agent between inner ring 11 and roller 3 and preventing to corrode.
So far disclosed embodiment be exemplary rather than in all aspects it is restricted.In other words, this hair Bright bearing arrangement and sealing device is not limited to described embodiment but can have within the scope of the invention other Embodiment.In this embodiment, bearing arrangement 7 has described as the roller 3 that support is used to drive continuously casting machine.However, In order to prevent foreign matter such as water from entering in gap between roller and inner ring, can use for more than the having of another purpose The bearing arrangement 7 of each in construction.In addition, though pad 51 can be formed fully by the rubber of identical material, still Pad 51 can be formed by polytype material.For example, although main part 52 is made up of rubber, contact site (53,54, 55) it with each can be the part (for example, resin component) with the coefficient of friction smaller than main part 52.

Claims (7)

  1. A kind of 1. bearing arrangement, it is characterised in that including：
    Bearing main body (10), the bearing main body have：Inner ring (11), the inner ring (11) are assembled to the small of pestle shape roller from outside Diameter shaft portion, the pestle shape roller have the minor diameter axle portion and major diameter portion；Tubular outer ring member (12), the tubular outer shroud Part (12) is arranged on the radial outside of the inner ring；Multiple rolling elements (13), the multiple rolling element (13) quilt It is arranged between the inner ring and the outer ring member；With shaft housing (14), the shaft housing (14) supports the outer ring member； With
    Sealing structure body (30), the sealing structure body (30) prevent water to be externally entering the axle provided with the rolling element Hold in internal (15) and part between the inner ring and the roller, wherein
    The sealing structure body has：
    Labyrinth ring (31), the labyrinth ring (31) are attached to the bearing main body on the radial outside of the inner ring, A part for the labyrinth ring (31) is mounted in the recessed circumferential grooves formed in the major diameter portion of the roller, and And the labyrinth ring (31) forms labyrinth clearance between the labyrinth ring and the recessed circumferential grooves；With
    Pad (51), the pad (51) is attached to the axial side (16) of the inner ring, described to pad described in (51) contact A part for roller, and the pad (51) prevents the water from the outside institute entered between the inner ring and the roller State in part.
  2. 2. bearing arrangement according to claim 1, wherein
    The axial side (16) of the inner ring (11) sequentially has from the radial outside：Annular surface, the ring Shape surface is located in the virtual surface orthogonal with the center line of the inner ring；Curved surfaces (22), the curved surfaces (22) Diameter reduces towards axially center；With cylinderical surface (23), the cylinderical surface (23) is mounted to the small diameter shaft Portion,
    In the curved surfaces for the axial side that annular attachment channels (72) are provided at least at the inner ring, and
    The pad has：Main part (52), the main part are attached to the attachment channels；It is described with contact site (53) Contact site (53) is arranged on the roller side of the main part, and the contact site (53) can contact the roller.
  3. 3. bearing arrangement according to claim 1, wherein
    The axial side (16) of the inner ring (11) sequentially has from the radial outside：Annular attachment channels (72)；Curved surfaces (22), the diameter of the curved surfaces (22) reduce towards axially center；With cylinderical surface (23), institute State cylinderical surface (23) and be mounted to the minor diameter axle portion, and
    The pad (51) has：Main part (52), the main part (52) are attached to the attachment channels；First contact site (54), first contact site (54) is arranged on the labyrinth ring side of the main part, and first contact site (54) Can be with the inner peripheral surface sliding contact of the labyrinth ring；With the second contact site (55), second contact site (55) is set On the roller side of the main part, and second contact site (55) can contact the roller.
  4. 4. bearing arrangement according to claim 3, wherein
    The attachment channels (72) include：The outer cylindrical surface (78) faced with the radial outside；And with it is axially external The annular surface faced, and
    The pad (51) has quadrangular cross section, and the peripheral part of the pad is used as first contact site (54), and The axial side of the pad is used as second contact site (55).
  5. 5. bearing arrangement according to claim 3, wherein
    The attachment channels (72) include：First groove portion (74) on axially external；With second groove portion (75), described Two grooves (75) are disposed adjacently with the first groove portion, and the channel bottom in the second groove portion (75) have than The small diameter of the diameter of the channel bottom in the first groove portion, and
    The pad (51) has：It is mounted to the main part (52) in the first groove portion and the second groove portion； First contact site (54) set in a manner of extending to the radial outside from the main part；With with from the main body Portion extends to second contact site (55) that the axially external mode is set.
  6. 6. bearing arrangement according to claim 1, wherein
    The axial side (16) of the inner ring (11) sequentially has from the radial outside：Annular attachment channels (72)；Annular surface, the annular surface are located in the virtual surface orthogonal with the center line of the inner ring；Curved surfaces (22), the diameter of the curved surfaces (22) reduces towards axially center；With cylinderical surface (23), the cylinderical surface (23) the minor diameter axle portion is mounted to, and
    The pad (51) has：Main part (52), the main part (52) are attached to the attachment channels, and the master Body portion (52) covers the annular surface；First contact site (54), first contact site (54) are arranged on the main part Labyrinth ring side on, and first contact site (54) can be with the inner peripheral surface sliding contact of the labyrinth ring；With second Contact site (55), second contact site (55) is arranged on the roller side of the main part, and second contact site (55) roller can be contacted.
  7. 7. a kind of sealing device, the sealing device is arranged in the axial side of the inner ring of bearing arrangement, so as to prevent water It is externally entering in the part between the inner ring and pestle shape roller, wherein the bearing arrangement is installed in the small straight of the roller In diameter section, so as to support the roller as follows, the mode enables the roller to be rotated relative to shaft housing, described Sealing device is characterised by including：
    Main part, the main part are attached to the attachment channels formed in the axial side of the inner ring；With
    Contact site, the contact site are arranged on the roller side of the main part, and the contact site can contact the roller A part.
CN201710235540.1A 2016-04-14 2017-04-12 Bearing device and sealing device Active CN107420434B (en)

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JP2016080952A JP6710566B2 (en) 2016-04-14 2016-04-14 Bearing device, assembly, and sealing device
JP2016-080952 2016-04-14

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI693354B (en) * 2018-11-15 2020-05-11 臣庭貿易有限公司 Sealing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110883099A (en) * 2019-12-11 2020-03-17 广东冠邦科技有限公司 Sealing system and planetary rolling mill
CN112718871A (en) * 2020-12-11 2021-04-30 陕西龙门钢铁有限责任公司 Rod and wire mill bearing seal assembly
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CN107420434B (en) 2020-10-16
JP2017190835A (en) 2017-10-19

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