CN202707815U - Rolling bearing device for railway vehicle axle - Google Patents
Rolling bearing device for railway vehicle axle Download PDFInfo
- Publication number
- CN202707815U CN202707815U CN 201220247062 CN201220247062U CN202707815U CN 202707815 U CN202707815 U CN 202707815U CN 201220247062 CN201220247062 CN 201220247062 CN 201220247062 U CN201220247062 U CN 201220247062U CN 202707815 U CN202707815 U CN 202707815U
- Authority
- CN
- China
- Prior art keywords
- outer ring
- ring
- rolling bearing
- sealing
- fixing part
- 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.)
- Expired - Lifetime
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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
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a rolling bearing device for a railway vehicle axle. By the rolling bearing device, sealing performance of a sealing device can be improved further, and durability weakening is suppressed. The rolling bearing device for the railway vehicle axle is provided with an inner ring, an outer ring, a rolling body and the sealing device, wherein the rolling body capable of freely rolling is arranged between the inner ring and the outer ring, and the sealing device seals the inner ring and the outer ring and comprises a sealing member and a sealing cover. The sealing member seals the inner ring and the outer ring, and the sealing cover is provided with a cylindrical fixed portion and a holding portion, wherein the cylindrical fixed portion is fixedly nested in any one of an inner diameter surface and an outer diameter surface of an end of the outer ring and extends along the outer side of the outer ring to form the holding portion which holds the sealing member on the axial outer side of the end face of the outer ring. In the rolling bearing device for the railway vehicle axle, the fixed portion is further provided with a contact portion and a non-contact portion, wherein the contact portion is nested in any one of the inner diameter surface and the outer diameter surface of the end of the outer ring in a surface contact state, and the non-contact portion is closer to the axial end face of the outer ring than the contact portion and without contacting with the outer ring.
Description
Technical field
The utility model relates to a kind of rail truck axletree rolling bearing system, particularly to the improvement of the seal arrangement of the axial end portion that is arranged on bearing.
Background technique
Axletree as the supporting rail truck makes its bearing means that rotates freely, and for example can enumerate the rolling bearing system that the double row tapered roller axis of a cylinder with the end that is disposed at axletree held and be configured in the seal arrangement in the outside, axial two ends that this double row tapered roller axis of a cylinder holds.
Fig. 6 is the partial sectional view of an example of the existing rolling bearing system that uses in the rail truck of expression.Rolling bearing system 100 comprises: the inner ring 101 that is embedded in axletree S outward; Be fixed in the outer ring 102 of vehicle one side; Be configured in the tapered roller 103 between inner ring 101 and the outer ring 102; With for the seal arrangement 104 with sealing between inner ring 101 and the outer ring 102.Seal arrangement 104 has: the seal closure 105 that is fixed in the outer ring; Be maintained on the seal closure 105, be used for to realize and axletree S between the sealing component 106 of sealing.Seal closure 105 is fixed in the end of outer ring 102, has: be fixed on the end of outer ring 102, and be pressed into the fixing part 105a of tubular of the internal side diameter of the end 102a that is fixed in outer ring 102; With by fixing part 105a along the outer ring 102 lateral direction extend, and sealing component 106 controlled in the outer ring handle 105b of tubular in the axial outside of 102 end face.
In the end of fixing part 105a, be formed with to the outstanding jut 105c of radial outside.Jut 105c engages with the seal groove 102b that is formed at end 102a, and restriction seal closure 105 is to axial movement.
Seal arrangement 104 will seal between seal closure 105 and the axletree S by sealing component 106, and the aperture surface of the end 102a by outer ring 102 contacts with the face of the outer diametric plane of the fixing part 105a that is pressed into this aperture surface, will sealing between seal closure 105 and the outer ring 102.
Yet, as mentioned above and since between seal closure 105 and the outer ring 102 mutually formation face contact, therefore, might be owing to such as the difference of each other surface roughness etc., and between generation micro-gap.
And, when the rotation because of axletree S drives seal closure 105 and rotates together, seal closure 105 will rotate with respect to outer ring 102 relatively because of this driven rotary, the outer diametric plane of fixing part 105a produces wearing and tearing with the aperture surface of end 102a with the phase mutual friction, also might be so that produce the gap between the two.
As mentioned above, when producing the gap between seal closure 105 and the outer ring 102, will make the inside of the intrusion rolling bearing systems such as dust, or the lubricating grease of bearing means inside is flowed out to the outside, thereby cause the durability of this rolling bearing system to reduce.In addition, when setting larger magnitude of interference, can occur because of mutual inlay resultant force so that the outer ring deforms, durability is produced dysgenic result.
For fear of the problems referred to above, for example, a kind of bearing means is disclosed in patent documentation 1, as shown in Figure 7, this bearing device for rolling stock axle has: inner ring (not shown); Aperture surface 11d in the end along circumferencial direction, is formed with the outer ring 11 of seal groove 40; Be configured between inner ring and the outer ring, can free rolling rolling element (not shown); With with the seal arrangement (not shown) that seals between inner ring and the outer ring, at the outer diametric plane 23a of the taper fixing part 23 of the seal closure 22 that makes seal arrangement in mode that can the elasticity tube reducing, form under the state that lines contact with the aperture surface 11d of the end that is formed at outer ring 11 and the ring-shaped edge section between the seal groove 40 44, seal closure 22 is embedded on the outer ring 11.
According to the bearing means that consists of as mentioned above, because fixing part 23 is embedded in ring-shaped edge section 44 with the state through the elasticity tube reducing, therefore has intention and make enlarged-diameter to the elastic-restoring force of reset condition.Therefore, the outer diametric plane 23a of fixing part 23 relies on this elastic-restoring force, contacts with ring-shaped edge section 44 under the state of being pressed by elasticity.And, because the outer diametric plane 23a of fixing part 23 is that line contacts with the surface of contact between the ring-shaped edge section 44, therefore, be accompanied by above-mentioned elastic-restoring force, the outer diametric plane 23a of fixing part is crushed in the ring-shaped edge section 44 with high surfaces pressure, thereby can be with seamless driving fit between the outer diametric plane 23a of fixing part and the ring-shaped edge section 44.And, for example, even relatively rotate with respect to outer ring 11 at seal closure 23, so that in the situation that between the outer diametric plane 23a of fixing part and the ring-shaped edge section 44 wearing and tearing occur, because the outer diametric plane 23a of fixing part in ring-shaped edge section 44, therefore can be prevented the gap by elastic compression joint.
As mentioned above, improve the sealing between outer ring 11 and the seal closure 22, consequently, can further improve the sealing of seal arrangement integral body.
Yet, in the structure of patent documentation 1, because being line with contacting part between the ring-shaped edge section 44, the outer diametric plane 23a of fixing part 23 contacts, and therefore, the assembling attitude of seal closure 22 might become unstable.In addition, because the outer diametric plane 23a of the fixing part 23 of seal closure 22 is taper, therefore, compare with the situation of in the past the outer cylindrical shape of diametric plane of solid part, seal closure 22 becomes and is difficult to insert outer ring 11.And, because outer ring 11 is line with the fixing part 23 of seal closure 22 and contacts, therefore, contact with face and to compare, stress will be produced at contacting part concentrated, thereby the increase of the wearing and tearing of contacting part might be caused.
Therefore, expectation can improve mosaic between outer ring and the seal closure and the technological scheme of sealing reliably.
The prior art document
Patent documentation 1: TOHKEMY 2008-240781 communique
The model utility content
The problem that model utility will solve
The utility model is made in order to satisfy above-mentioned requirements, and its purpose is, a kind of sealing that can improve seal arrangement is provided, suppresses the seal arrangement of bearing unit for railway carriages of the reduction of durability.
In order to realize this purpose, rail truck axletree of the present utility model has with rolling bearing system: inner ring; The outer ring; Be disposed between above-mentioned inner ring and the outer ring, can the free rolling rolling element; With with the seal arrangement that seals between above-mentioned inner ring and the outer ring.Above-mentioned seal arrangement has sealing component and the seal closure that will seal between above-mentioned inner ring and the outer ring.Above-mentioned seal closure has: with the fixing part of the chimeric fixing tubular in the aperture surface of the end of above-mentioned outer ring and the arbitrary surface in the outer diametric plane; With extended along the outside of above-mentioned outer ring by above-mentioned fixing part, and with above-mentioned sealing component the handle in the axial outside of the axial end that is held in above-mentioned outer ring.With in the rolling bearing system, above-mentioned fixing part has at above-mentioned rail truck axletree: with surface contact state, and the contacting part chimeric with the aperture surface of the end of above-mentioned outer ring or the arbitrary surface in the outer diametric plane; With the axial end that is located at than the more close above-mentioned outer ring of above-mentioned contacting part, and the non-contact section that does not contact with above-mentioned outer ring.
The effect of model utility
According to rail truck axletree rolling bearing system of the present utility model, seal closure is at the contacting part of the close tip portion of fixing part, under the state of face contact, chimeric with aperture surface or the arbitrary surface in the outer diametric plane of the end of outer ring, the non-contact section than the axial end of the more close outer ring of fixing part does not contact with the outer ring, thus, even under the state of bearing means rotation, also can improve the sealing of seal arrangement, suppress the reduction of the durability of bearing means.
Description of drawings
Fig. 1 is the sectional view of structure of the bearing device for rolling stock axle of expression the utility model the first mode of execution.
Fig. 2 amplifies the sectional view of major component of seal arrangement that expression is positioned at base end part one side of axletree.
Fig. 3 is the sectional view of major component of seal arrangement of the base end part side that is positioned at axletree that amplifies the bearing device for rolling stock axle of expression the utility model the second mode of execution.
Fig. 4 is the sectional view of major component of seal arrangement of the base end part side that is positioned at axletree that amplifies the bearing device for rolling stock axle of expression the utility model the 3rd mode of execution.
Fig. 5 is the sectional view of major component of seal arrangement of the base end part side that is positioned at axletree that amplifies the bearing device for rolling stock axle of expression the utility model the 4th mode of execution.
Fig. 6 is that expression is for the sectional view of an example of the existing rolling bearing system of rail truck.
Fig. 7 is another routine sectional view that expression is used for the existing rolling bearing system of rail truck.
Symbol description
1 rolling bearing system
11 outer rings
12,13 inner rings
14,15 tapered rollers (rolling element)
20 seal arrangements
21 sealing components
22 seal closures
23 fixing parts
Embodiment
Below, with reference to accompanying drawing, the bearing device for rolling stock axle of the utility model the first mode of execution is described.
In Fig. 1, rolling bearing system 1 comprises: outer build-in fixes on the double row tapered roller axis of a cylinder that wheel with rail truck is fixed as the end of axletree S that can the one rotation and holds bearing 10; With the sealed at both ends a pair of seal arrangement 20 with this tapered roller bearing 10.
Tapered roller bearing 10 has: the outer ring 11 that is fixed on vehicle side; With can one the mode of rotation be fixed in a pair of inner ring 12,13 of axletree S; Be configured in multiple row between inner ring and the outer ring can free rolling as the tapered roller 14,15 of rolling element; Keep respectively tapered roller 14,15 retainer 16,17.
In addition, insert the state that is fixed to outer ring 11 about seal closure 22, describe in detail hereinafter.
At the two ends of rolling bearing system 1, dispose outer build-in and ring- shaped member 30,31 that can one rotation upper due to axletree S.Be disposed at the ring-shaped member 31 and the stepped part s1 butt that is formed at axletree S of the base end part side of axletree S, limit it to the movement of axial terminal side.And, in the tip portion of axletree S, dispose the cover 33 of being fixed by bolt 32.Cover 33 configures with ring-shaped member 30 butts of the tip portion side that is disposed at axletree S, the ring- shaped member 30,31 that is disposed at rolling bearing system 1 and two ends thereof is clamped between the stepped part s1 of cover 33 and axletree S, keeps the axial position of rolling bearing system 1.
On ring- shaped member 30,31, be formed with respectively to radial outside direction outstanding annular convex 30a, 31a.On annular convex 30a, 31a, be formed with respectively ring-type slot part 30a1, the 31a1 of the 22c of cylinder section that extends vertically from the top of the handle 24 of seal closure 22 for insertion.The 22c of cylinder section of ring-type slot part 30a1,31a1 and insertion ring-type slot part 30a1,31a1 consists of labyrinth, can further improve the sealing between seal closure 22 and the ring- shaped member 30,31.
Then, illustrate above-mentioned seal arrangement 20 form that 11 insertions are fixed to the outer ring.
Fig. 2 is the sectional view of major component of the seal arrangement 20 of the base end part that is positioned at axletree S one side in the Watch with magnifier diagram 1.As shown in Figure 2, the aperture surface 11d of 11 end 11c in the outer ring along circumferencial direction, is formed with seal groove 40.Seal groove 40 forms to the recessed mode of radial outside direction with the aperture surface 11d from end 11c.
In addition, between the axial end 11e of the aperture surface 11d of end 11c and outer ring 11, on aperture surface, form stepped part 11f.
Same with existing structure, the outer diametric plane 23a of the fixing part 23 of seal closure 22 is formed on the barrel surface.At the tip portion 23b of fixing part 23, be provided with the projection 26 that is projected into radial outside.When seal closure 22 for example was intended to move to axial lateral direction owing to external factor, projection 26 engaged with seal groove 40, thereby can limit seal closure 22 movement in the axial direction.Thus, can prevent that seal arrangement 20 from 11 coming off from the outer ring.
Under the state that makes fixing part 23 integral, flexible tube reducings, with the fixing part 23 embedded aperture surface 11d that are fixed in the close seal groove 40 of end 11c.On the other hand, the outer diametric plane 23a of fixing part 23 is the discontiguous structure of stepped part 11f with the close axial end 11e that is formed at outer ring 11.
In the present embodiment, as mentioned above, make the embedded aperture surface 11d that is fixed on the close seal groove 40 of end 11c of outer diametric plane 23a of fixing part 23, be contactless state with near the stepped part 11f the end face 11e that is formed at outer ring 11, therefore, can be in the rigidity of seal closure 22 lower part, under the state of face contact, 11d is chimeric with aperture surface, and compared with prior art, can further reduce area of contact.Thus, can suppress the distortion of the outer ring 11 of being caused by inlay resultant force, and, can also prevent that chimeric surface in the contact segment of fixing part 23 from producing stress and concentrating, realize the stabilization of the attitude of seal closure 22, improve seal closure 22 assembly operation when chimeric.In addition, the axial length A of the non-contact section of fixing part 23 more preferably more than or equal to the thickness of slab t of seal closure 22, can prevent the distortion of outer ring 11 thus.
In addition, the utility model is not limited to above-mentioned mode of execution.For example, although in the above-described embodiment, illustrative is the situation that stepped part 11f is located at end 11c, and for example, as shown in Figure 3, the structure that makes the part of the close end face 11e of end 11c be the conical surface also can realize same effect.
In addition, as shown in Figure 4, even do not form in the situations such as stepped part, the conical surface at the aperture surface of end 11c, as long as make fixing part 23 bendings of seal closure 22, also can realize same effect.
And, as shown in Figure 5, in the fixing part 23 that makes seal closure 22 and the chimeric situation of the outer diametric plane of end 11c, as long as in the outer ring 11 outer diametric plane setting table rank section, the conical surface perhaps is set, also can realize same effect.
Industrial applicability
Rolling bearing system of the present utility model for example, can be suitable for being applied in the rolling bearing system that the axletree of supporting rail truck can rotate freely.
Claims (2)
1. rail truck axletree rolling bearing system is characterized in that having:
Inner ring;
The outer ring;
Be disposed between described inner ring and the described outer ring, can the free rolling rolling element; With
With the seal arrangement that seals between described inner ring and the described outer ring,
Described seal arrangement has sealing component and the seal closure that seals between described inner ring and the described outer ring,
Described seal closure has:
Fixing part with the chimeric fixing tubular in the aperture surface of the end of described outer ring and the arbitrary surface in the outer diametric plane; With
Extended along the outside of described outer ring by described fixing part, and with described sealing component the handle in the axial outside of the end face that is held in described outer ring,
Wherein,
Described fixing part has: with the chimeric contacting part in arbitrary surface in the outer diametric plane of the end of the aperture surface of the end of surface contact state and described outer ring or described outer ring; With
Than the end face of the more close outer ring of described contacting part, and the non-contact section that does not contact with described outer ring.
2. rail truck axletree rolling bearing system as claimed in claim 1 is characterized in that, the axial length of described non-contact section is more than or equal to the thickness of slab of described seal closure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-152721 | 2011-07-11 | ||
| JP2011152721A JP2013019459A (en) | 2011-07-11 | 2011-07-11 | Bearing device for railway vehicle axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707815U true CN202707815U (en) | 2013-01-30 |
Family
ID=47588122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220247062 Expired - Lifetime CN202707815U (en) | 2011-07-11 | 2012-05-29 | Rolling bearing device for railway vehicle axle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013019459A (en) |
| CN (1) | CN202707815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244568A (en) * | 2013-05-24 | 2013-08-14 | 上海联合滚动轴承有限公司 | Sealed cover press-installing device of railway truck bearing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS526746Y2 (en) * | 1972-07-28 | 1977-02-12 | ||
| JP4742796B2 (en) * | 2005-10-04 | 2011-08-10 | 日本精工株式会社 | Rolling bearing unit with rotation detector |
| JP2008107177A (en) * | 2006-10-25 | 2008-05-08 | Nsk Ltd | Hub unit for driving wheel with state quantity measuring device |
| JP2008267431A (en) * | 2007-04-17 | 2008-11-06 | Ntn Corp | Double row tapered roller bearing device |
| JP2009257386A (en) * | 2008-04-14 | 2009-11-05 | Jtekt Corp | Bearing device |
| JP2009293677A (en) * | 2008-06-04 | 2009-12-17 | Jtekt Corp | Sealing member of rolling bearing device and its installation structure |
-
2011
- 2011-07-11 JP JP2011152721A patent/JP2013019459A/en active Pending
-
2012
- 2012-05-29 CN CN 201220247062 patent/CN202707815U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244568A (en) * | 2013-05-24 | 2013-08-14 | 上海联合滚动轴承有限公司 | Sealed cover press-installing device of railway truck bearing |
| CN103244568B (en) * | 2013-05-24 | 2015-09-09 | 上海联合滚动轴承有限公司 | A kind of press-loading apparatus of seal closure of railway truck bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013019459A (en) | 2013-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |