CN2328826Y - Rubber labyrinth lorry shaft seal device - Google Patents
Rubber labyrinth lorry shaft seal device Download PDFInfo
- Publication number
- CN2328826Y CN2328826Y CN 96244778 CN96244778U CN2328826Y CN 2328826 Y CN2328826 Y CN 2328826Y CN 96244778 CN96244778 CN 96244778 CN 96244778 U CN96244778 U CN 96244778U CN 2328826 Y CN2328826 Y CN 2328826Y
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- CN
- China
- Prior art keywords
- oil seal
- seal
- sealing
- ring
- sealing 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.)
- Expired - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model relates to a bearing sealing device for the axles of railway wagons, railway vehicles and railway carriages, which can overcome the defects of bad sealing performance and short service life of the existing bearing sealing devices. The bearing sealing device comprises a front cover, a rear gear, a sealing cover, a sealing seat, an inner oil seal and an outer oil seal. The inner oil seal is provided with a seat ring 13, a sealing lantern ring 9, a sealing lantern ring 10 and a support wall 31, and the outer oil seal is provided with a seat ring 14, a sealing lantern ring 11, a sealing lantern ring 12 and a support wall 32. The sealing lantern ring 9 is positioned between the seat ring 14 and the sealing lantern ring 11, and the sealing lantern ring 10 is positioned between the sealing lantern ring 11 and the sealing lantern ring 12. The utility model has good sealing performance and long service life.
Description
This device is used for sealing on the railway truck bearing, also can be used on railway locomotive, the passenger car shaft sealing formula bearing.
What traditional both at home and abroad sealed type vehicle bearing adopted is the rubber oil sea formula seal arrangement of band counterbalance spring, it exists that seal closure is easily loosening, oil sealing easily comes off and wearing and tearing, friction torque are big, temperature rise, the life-span is short and problem and shortcoming such as poor sealing performance, greatly reduce bearing working life, increased the car inspection and repair cost, and the hot box accident that causes therefrom causes very big threat to the lorry traffic safety.Therefore, about bearing manufacturing and application department have also proposed some corrective measures, for example by the mazy type of forming by metallic stamping pieces or metal processing piece (Chinese patent application number 902141775), the metal piston ring type is arranged, or they are because of structure simple seal poor performance too, or processing difficulties and cost height.External new development a kind of power labyrinth (HDL) formula [being published in Eisebhninieur (1995) 7] or lips labyrinth (DDL) formula [being published in PROGRESSIVERAILRODING (1994) 7] sealing, but the improvement of its sealability, friction torque and temperature rise is limited.Sealing also has certain influence to bearing rotation torque and temperature rise, and device is formed by metallic stamping pieces and building rubber compound, assembling, dismounting difficulty (disposable only dress is used).This device can solve the problem that above-mentioned all kinds of device exists comprehensively.
The purpose of this utility model is, a kind of favorable sealing property, stable, reliable and long service life, friction torque is little, temperature rise is low associated sealing arrangement for bearings are provided.
The purpose of this utility model is to realize like this, utilize fluid maximum resistance principle, only adopt the rubber seal (inside and outside oil sealing) of two vulcanization formings, be fitted on the original seal closure and sealing seat, fit together with protecgulum, the back shelves of former bearing, promptly constitute the complete noncontact seal device of forming by multi-sealed key element.Specifically comprise protecgulum 22, backstop 23, seal closure 3, sealing seat 4 and be installed in the inner oil seal 1 on the sealing seat 4 and be installed in outer oil seal 2 on the seal closure 3 that inner oil seal 1 includes metal frame 5,7 with outer oil seal 2.The root in the outside of the sealing ring 11 of outer oil seal 2 has gutter 30, the end perk of the seat ring 14 of outer oil seal 2, perk partly has inclined-plane 29, protecgulum 22 and backstop 23 all have the dirty convex shoulder 36 of water dumping, all has gutter 37 between protecgulum 22 and backstop 23 and the seal closure 3, has expansion swirl space 33 between the end of the supporting walls 31 of inner oil seal 1 and the seat ring 14 of outer oil seal 2, the sealing ring 9 of inner oil seal 1 and the bottom between the sealing ring 10 have expansion swirl space 34, the sealing ring 10 of inner oil seal 1 and the bottom between the sealing seat 4 have expansion swirl space 35, the seat ring 14 of outer oil seal 2 and the bottom between the sealing ring 11 have expansion swirl space 38, the sealing ring 11 of outer oil seal 2 and the bottom between the sealing ring 12 have expansion swirl space 39, have expansion swirl space 40 between the root of paying lip 27 of outer oil seal 2 and the sealing seat 4.
Compare with the existing bearing seal arrangement, this device has following characteristics:
The two way sealed of (1) dustproof, protection against the tide, waterproof, anti-rejection oil is functional, stable, reliably;
(2) because of being contactless fully, thus the influence of seal arrangement zerofriction force square and temperature rise, thereby applicable various rotating speed, and eliminated the factor that causes the power that seal closure, sealing seat or oil sealing get loose, eliminated pseudo-heat axle accident phenomenon.
(3) Sealing does not have abrasion, and the life-span, long (equaling the rubber parts natural aging life-span in principle) can reach more than the overhaul phase of rolling stock (or bearing) (5 years).
(4) interior outer oil seal assembly and disassembly separately, it is convenient to use, overhaul.
(5) seal fitting of original bearing (seal closure, sealing seat, protecgulum, back shelves) still can continue to use.
(6) cancel the necessary breather plug of former traditional oil sealing, simplified processing, assembling and maintenance technology.
(7) design novel little drag, high elasticity, long lifetime V-type axle head bolt seal circle, improved the property easy to assembly and the firm reliability of bolt.
The said structure performance of this device, not only fundamentally eliminated the problem shortcoming that the domestic current oil-sealing arrangement exists, and be better than HDL or DDL formula seal arrangement greatly, can prolong the working life of lubricating grease and bearing greatly, the manufacturing and the cost of overhaul have been reduced, improved the property safe and reliable to operation of railway locomotive, vehicle, tangible techno-economic effect has been arranged.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the enlarged view of the seal ring 41 among Fig. 1.
Fig. 3 is the A portion enlarged view among Fig. 1.
As Fig. 1, Fig. 2 and shown in Figure 3, present embodiment is the associated sealing arrangement for bearings of lorry, and it is contained in bearing 26 rear and front ends respectively symmetrically.Bearing 26 is installed on the axletree 28.Two sealing seats 4 are installed on the axletree 28, and they lay respectively at the front end and back end of bearing 26.Inner oil seal 1 is installed on the sealing seat 4, and backstop 23 is installed on the axletree 28, and it is positioned at bearing 26 rear sides.Protecgulum 22 is installed in the axle head of axletree 28 by bolt 42, and seal ring 41 is installed between protecgulum 22 and the axle head, and protecgulum 22 is pressed in seal ring 41 on the axle head.As shown in Figure 2, the section of seal ring 41 is " V " type.One end of seal closure 3 is installed on the outer ring of bearing 26, and outer oil seal 2 is installed on the seal closure 3.Inner oil seal 1 has metal frame 5 and vulcanizes all-in-one-piece rubber layers 6 with skeleton 5.Inner oil seal 1 comprises seat ring 13, sealing ring 9, sealing ring 10 and supporting walls 31, and seat ring 13 is assemblied on the sealing seat 4.The root and the supporting walls 31 of seat ring 13, sealing ring 9 and sealing ring 10 fuse.Outer oil seal 2 has skeleton 7 and vulcanizes all-in-one-piece rubber layers 8 with skeleton 7.Outer oil seal 2 comprises seat ring 14, sealing ring 11, sealing ring 12 and supporting walls 32, and seat ring 14 is assemblied on the seal closure 3.The root and the supporting walls 32 of seat ring 14, sealing ring 11 and sealing ring 12 fuse.Sealing ring 9 is between seat ring 14 and sealing ring 11, and sealing ring 10 is between sealing ring 11 and sealing ring 12.Has gap 15 between seat ring 14 and the sealing ring 9, has gap 16 between sealing ring 9 and the sealing ring 11, have gap 17 between sealing ring 11 and the sealing ring 10, have gap 18 between sealing ring 10 and the sealing ring 12, have gap 19 between sealing ring 12 and the sealing seat 4.The outside, end of the sealing ring 9 of inner oil seal 1 has anticreep chimb 20.The outside of the seat ring 13 of inner oil seal 1 has the shoulder protector 21 of inclination, and the end of shoulder protector 21 that is positioned at the inner oil seal 1 of bearing 26 front ends contacts with protecgulum 22, and the end of shoulder protector 21 that is positioned at the inner oil seal 1 of bearing 26 rear ends contacts with backstop 23.The outer side surface 24 of inner oil seal 1 is the plane of inclination, i.e. the axis out of plumb of outer side surface 24 and inner oil seal 1, and outer side surface 24 is to the lopsidedness of protecgulum 22 or backstop 23.The root of sealing ring 9 has the dirty convex shoulder 25 of the water dumping that links to each other with outer side surface 24.The root of the sealing ring 12 of outer oil seal 2 has pair lip 27 of an inclination, pays the outer surface of the end of lip 27 towards sealing seat 4.
Claims (5)
1, a kind of rubber mazy type freight car bearing seal arrangement, it comprises protecgulum (22), backstop (23), seal closure (3), sealing seat (4) and is installed in the inner oil seal (1) on the sealing seat (4) and is installed in outer oil seal (2) on the seal closure (3), it is characterized in that, adopt rubber parts inner oil seal (1), the outer oil seal (2) of two sulfidization moldings, constitute the complete noncontact seal device of forming by multi-sealed key element.
2, rubber mazy type associated sealing arrangement for bearings according to claim 1, it is characterized in that, its main body adopts rubber seal inner oil seal (1), the outer oil seal (2) of two sulfidization moldings, interior all metal-containing skeletons (5) (7), inner oil seal (1), outer oil seal (2) press-fit respectively on sealing seat (4) and seal closure (3), are assembled in the bearing front end and back end symmetrically.Be provided with sealing ring (10) in the inner oil seal (1), be provided with sealing ring (11) (12) in the outer oil seal.
3, rubber mazy type freight car bearing seal arrangement according to claim 1 is characterized in that, the outside, end of the sealing ring (9) of inner oil seal (1) has anticreep chimb (20).
4, according to claim 1,2 or 3 described rubber mazy type freight car bearing seal arrangements, it is characterized in that axle head has the seal ring (41) of " V " type section, seal ring (41) is pressed on the axle head by protecgulum (22) with bolt (42).
5, rubber mazy type freight car bearing seal arrangement according to claim 4, it is characterized in that, the root in the outside of the sealing ring (11) of outer oil seal (2) has gutter (30), the end perk of the seat ring (14) of outer oil seal (2), perk partly has inclined-plane (29), protecgulum (22) and backstop (23) all have the dirty convex shoulder (36) of water dumping, all has gutter (37) between protecgulum (22) and backstop (23) and the seal closure (3), has expansion swirl space (33) between the end of the supporting walls (31) of inner oil seal (1) and the seat ring (14) of outer oil seal (2), the sealing ring (9) of inner oil seal (1) and the bottom between the sealing ring (10) have expansion swirl space (34), the sealing ring (10) of inner oil seal (1) and the bottom between the sealing seat (4) have expansion swirl space (35), the seat ring (14) of outer oil seal (2) and the bottom between the sealing ring (11) have expansion swirl space (38), the sealing ring (11) of outer oil seal (2) and the bottom between the sealing ring (12) have expansion swirl space (39), have expansion swirl space (40) between the root of paying lip (27) of outer oil seal (2) and the sealing seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244778 CN2328826Y (en) | 1996-12-04 | 1996-12-04 | Rubber labyrinth lorry shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96244778 CN2328826Y (en) | 1996-12-04 | 1996-12-04 | Rubber labyrinth lorry shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2328826Y true CN2328826Y (en) | 1999-07-14 |
Family
ID=33918064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96244778 Expired - Fee Related CN2328826Y (en) | 1996-12-04 | 1996-12-04 | Rubber labyrinth lorry shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2328826Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370160C (en) * | 2003-10-31 | 2008-02-20 | Ntn株式会社 | Bearing with sealing device |
| CN100551754C (en) * | 2004-05-24 | 2009-10-21 | Ntn株式会社 | Bearing unit for railway carriages |
-
1996
- 1996-12-04 CN CN 96244778 patent/CN2328826Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370160C (en) * | 2003-10-31 | 2008-02-20 | Ntn株式会社 | Bearing with sealing device |
| CN100551754C (en) * | 2004-05-24 | 2009-10-21 | Ntn株式会社 | Bearing unit for railway carriages |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |