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FR2552840A1 - Dynamic seal to ensure the leaktightness to grease between a fixed part and a rotating part - Google Patents

Dynamic seal to ensure the leaktightness to grease between a fixed part and a rotating part Download PDF

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Publication number
FR2552840A1
FR2552840A1 FR8315719A FR8315719A FR2552840A1 FR 2552840 A1 FR2552840 A1 FR 2552840A1 FR 8315719 A FR8315719 A FR 8315719A FR 8315719 A FR8315719 A FR 8315719A FR 2552840 A1 FR2552840 A1 FR 2552840A1
Authority
FR
France
Prior art keywords
hub
joint according
fixed
channels
bush
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
FR8315719A
Other languages
French (fr)
Other versions
FR2552840B1 (en
Inventor
Pierre Merlin
Andre Marcel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chausson Usines SA
Original Assignee
Chausson Usines SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chausson Usines SA filed Critical Chausson Usines SA
Priority to FR8315719A priority Critical patent/FR2552840B1/en
Publication of FR2552840A1 publication Critical patent/FR2552840A1/en
Application granted granted Critical
Publication of FR2552840B1 publication Critical patent/FR2552840B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/121—Power-transmission from drive shaft to hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/001—Hubs with roller-bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F15/00—Axle-boxes
    • B61F15/20—Details
    • B61F15/22—Sealing means preventing entrance of dust or leakage of oil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F17/00—Lubrication specially adapted for axle-boxes of rail vehicles
    • B61F17/30—Lubrication specially adapted for axle-boxes of rail vehicles with grease
    • 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
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
    • 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
    • F16C33/80—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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/447—Labyrinth packings
    • F16J15/4472—Labyrinth packings with axial path
    • 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
    • F16C19/36—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 a single row of rollers
    • F16C19/364—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 a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
    • F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/10—Railway vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The dynamic seal for a hub, in particular for the hub of a wheel of a rail vehicle containing grease comprises a fixed bush 21 and a rotating bush 23, the said bushes interacting in order to delimit, between them, a set of annular channels 25a of different diameter separated by at least one linking chamber 25b.

Description

La présente invention concerne un joint dynamique permettant d'assurer l'étanchéité à la graisse entre une pièce fixe et une pièce tournante. L'invention trouve une application préférée, bien que non limitative, à l'application de ce joint dynamique à un moyeu de roue et notamment au moyeu d'une roue de véhicule ferroviaire comportant une roue à pneumatique et une roue métallique du genre de celle utilisée sur les véhicules du
Métropolitain dit sur pneu.The present invention relates to a dynamic seal making it possible to ensure grease tightness between a fixed part and a rotating part. The invention finds a preferred application, although not limiting, to the application of this dynamic seal to a wheel hub and in particular to the hub of a rail vehicle wheel comprising a tire wheel and a metal wheel of the kind of that used on vehicles from
Metropolitan says on tire.

Dans des modes de réalisation connus pour assurer l'étanchéité à la graisse entre une pièce fixe et une pièce tournante, on utilise des joints flexibles, notamment des joints en élastomère, qui sont montés le plus souvent dans une ou des rainures de la pièce tournante, de manière à frotter sur la pièce fixe. Dans de nombreux cas, on utilise des joints dits à lèvres dont la ou les lèvres tendent à être appliquées sur la pièce fixe si une pression est développée sur elles par la graisse tendant à fuir. In known embodiments for sealing the grease between a fixed part and a rotating part, flexible seals are used, in particular elastomer seals, which are most often mounted in one or more grooves in the rotating part. , so as to rub on the fixed part. In many cases, so-called lip seals are used, the lip or lips of which tend to be applied to the fixed part if pressure is developed on them by the fat tending to leak.

Les joints connus du type rappelé ci-dessus ne sont pas complètement satisfaisants. Il a en effet été constaté que les joints souples finissent par user la pièce fixe sur laquelle ils frottent jusqu'à une mesure dépassant la tolérance des cotes que doit présenter cette pièce. The known seals of the type recalled above are not completely satisfactory. It has in fact been observed that the flexible joints end up wearing down the fixed part on which they rub to a measurement exceeding the tolerance of the dimensions which this part must have.

I1 est ainsi souvent nécessaire lors de la révision des essieux de véhicules, notamment de véhicules ferroviaires, de devoir changer non seulement des joints à lèvres ou d'un autre type dont le prix est faible, mais aussi, l'essieu ou l'arbre sur lequel portent ces joints, ce qui conduit à des démontages complexes et à des remplacements coûteux. It is thus often necessary during the overhaul of the axles of vehicles, in particular of railway vehicles, to have to change not only lip seals or of another type whose price is low, but also, the axle or the shaft to which these seals bear, which leads to complex disassembly and costly replacements.

La présente invention remédie aux inconvénients ci-dessus en créant un nouveau joint dans lequel aucun contact n'existe entre les parties qui le constituent. The present invention overcomes the above drawbacks by creating a new seal in which no contact exists between the parts which constitute it.

Conformément à l'invention, le joint dynamique pour moyeu, en particulier pour moyeu de roue contenant de la graisse, est caractérisé en ce qu'il comporte une douille fixe et une douille tournante, lesdites douilles coopérant pour délimiter, entre elles, un jeu de canaux annulaires de diamètre différent séparés par au moins une chambre de liaison. According to the invention, the dynamic seal for a hub, in particular for a wheel hub containing grease, is characterized in that it comprises a fixed bush and a rotating bush, said bushes cooperating to delimit, between them, a clearance. annular channels of different diameter separated by at least one connection chamber.

Diverses autres caractéristiques de l'invention ressortent d'ailleurs de la description détaillée qui suit. Various other characteristics of the invention will also emerge from the detailed description which follows.

Une forme de réalisation de l'objet de l'invention est représentée, à titre d'exemple non limitatif, au dessin annexé. An embodiment of the object of the invention is shown, by way of nonlimiting example, in the accompanying drawing.

La figure unique est une coupe-élévation partielle d'un moyeu moteur comportant un joint dynamique selon l'invention. The single figure is a partial sectional elevation of a drive hub comprising a dynamic seal according to the invention.

Le dessin illustre un moyeu moteur pour véhicule ferroviaire qui comporte un essieu tubulaire 1 qui constitue une pièce fixe. L'essieu 1 supporte des paliers 2 et 3 constitués dans l'exemple représenté par des roulements coniques. The drawing illustrates a drive hub for a railway vehicle which comprises a tubular axle 1 which constitutes a fixed part. Axle 1 supports bearings 2 and 3 formed in the example shown by tapered bearings.

Les paliers 2 et 3 sont séparés l'un de l'autre par une entretoise tubulaire 4. Les paliers 2 et 3 supportent par leur cage externe un moyeu de roue 5. The bearings 2 and 3 are separated from each other by a tubular spacer 4. The bearings 2 and 3 support by their external cage a wheel hub 5.

Le moyeu 5 comporte un premier flasque de support 6 pour la jante 7 d'une roue munie d'un pneumatique 9 et un second flasque de support 10 pour une roue métallique 11.The hub 5 comprises a first support flange 6 for the rim 7 of a wheel provided with a tire 9 and a second support flange 10 for a metal wheel 11.

L'extrémité de l'essieu 1 présente au moins une rainure 12 et un filetage 13. Le filetage 13 sert au vissage d'un écrou 14 qui est serré contre une rondelle 15 présentant des encoches 16 dans l'une au moins desquelles est engagée la tête d'un boulon 17 vissée dans un taraudage 18 de l'écrou 14 qui est serré contre la rondelle 15. The end of the axle 1 has at least one groove 12 and a thread 13. The thread 13 is used for screwing a nut 14 which is tightened against a washer 15 having notches 16 in at least one of which is engaged the head of a bolt 17 screwed into a thread 18 of the nut 14 which is tightened against the washer 15.

La rondelle 15 forme par ailleurs une clavette 19 engagée dans la rainure 12, ce qui fait que l'écrou 14 est rendu indesserrable après la mise en place du ou des boulons 17.  The washer 15 moreover forms a key 19 engaged in the groove 12, which means that the nut 14 is made inseparable after the positioning of the bolt (s) 17.

Le vissage d'un écrou 14 a pour effet de serrer la bague interne du palier 3 contre l'entretoise 4 qui transmet l'effort de serrage à la bague interne du palier 2, qui exerce elle-même une pousse par l'intermédiaire d'un joint de dilatation 20 sur une douille 21 immobilisée avec l'essieu 1 par un doigt 22 ou autre élément approprié. The screwing of a nut 14 has the effect of tightening the inner ring of the bearing 3 against the spacer 4 which transmits the tightening force to the inner ring of the bearing 2, which itself exerts a thrust through 'an expansion joint 20 on a sleeve 21 immobilized with the axle 1 by a finger 22 or other suitable element.

Comme l'illustre le dessin, la douille 21 coopère avec une seconde douille 23 fixée au moyeu 5 par des boulons- 24 pour délimiter un canal 25 en forme de chicane. As illustrated in the drawing, the socket 21 cooperates with a second socket 23 fixed to the hub 5 by bolts 24 to delimit a channel 25 in the form of a baffle.

Le canal 25 présente des coudes anguleux qui délimitent des méandres formant successivement des anneaux 25a de très faible section, des chambres annulaires 25b de section plus importante et un conduit annulaire de sortie 25c de très faible section comparable à la section des anneaux 25a. Une rainure de détente 26 est, en outre, prdvue dans le conduit 25c. The channel 25 has angular bends which delimit meanders successively forming rings 25a of very small section, annular chambers 25b of larger section and an annular outlet duct 25c of very small section comparable to the section of the rings 25a. A detent groove 26 is, moreover, provided in the conduit 25c.

Des graisseurs 27 et 28 sont prévus l'un dans le moyeu 5, l'autre dans la seconde douille 23. Lubricators 27 and 28 are provided, one in the hub 5, the other in the second bush 23.

Les graisseurs ci-dessus sont destinés à permettre l'amenée de graisse aux paliers 2 et 3. The above lubricators are intended to allow the supply of grease to bearings 2 and 3.

Ce qui précède montre que les paliers 2 et 3 sont isolés d'un côté de l'extérieur par le joint dynamique sans contact que forment les douilles coopérantes 22 et 23. The above shows that the bearings 2 and 3 are isolated on one side from the outside by the dynamic non-contact seal formed by the cooperating sockets 22 and 23.

Les paliers sont isolés sur leur autre côté au moyen d'un couvercle 29 fixé au moyeu 5--par des vis 30. The bearings are insulated on their other side by means of a cover 29 fixed to the hub 5 - by screws 30.

Lorsque les roues 8 et 10 doivent être motrices, le couvercle 29 est formé ou supporté par l'extrémité d'un arbre 31 concentrique à l'essieu 1. When the wheels 8 and 10 must be driving, the cover 29 is formed or supported by the end of a shaft 31 concentric with the axle 1.

Les explications qui précèdent et le dessin montrent qùe la seconde douille 23 est entraînée en rotation en même temps que le moyeu 5 tandis que la première douille 21 est fixée. Le dessin montre également que la seconde douille 23 délimite avec le palier 2 une chambre 32 de plus grand diamètre que l'anneau 25a. Il résulte de la disposition décrite ci-dessus, gué, pendant la rotation du moyeu 5, la graisse remplissant les espaces libres' compris entre le couvercle 29 et les douilles coopérantes 21 et 23 qui constituent le joint dynamique, assure la lubrification des paliers 2 et 3. The foregoing explanations and the drawing show that the second bush 23 is rotated at the same time as the hub 5 while the first bush 21 is fixed. The drawing also shows that the second socket 23 defines with the bearing 2 a chamber 32 of larger diameter than the ring 25a. It results from the arrangement described above, ford, during the rotation of the hub 5, the grease filling the free spaces' between the cover 29 and the cooperating sockets 21 and 23 which constitute the dynamic seal, ensures the lubrication of the bearings 2 and 3.

La graisse se trouvant dans la chambre 32 est plus ou moins plaquée contre la périphérie externe de cette chambre par l'action de la force centrifuge. Une partie de la graisse peut toutefois tendre à s'introduire dans le canal 25a de plus grand diamètre, mais ce canal étant de faible section et dirigé axialement,la graisse ne peut que très difficilement progresser vers la première chambre 25b. Si de la graisse parvient à la première chambre 25b elle est également centrifugée et tend à être plaquée contre la paroi périphérique de plus grand diamètre de cette chambre. Une progression de la graisse dans le second canal axial 25a est donc déjà peu probable. The grease in the chamber 32 is more or less pressed against the outer periphery of this chamber by the action of centrifugal force. Part of the fat can however tend to be introduced into the channel 25a of larger diameter, but this channel being of small section and axially directed, the fat can only very difficult to progress towards the first chamber 25b. If grease reaches the first chamber 25b it is also centrifuged and tends to be pressed against the peripheral wall of larger diameter of this chamber. A progression of the fat in the second axial channel 25a is therefore already unlikely.

On voit immédiatement par ce qui précède que la combinaison des canaux 25a et des chambres 25b a pour effet de créer une perte de charge tellement importante que la graisse est empêchée d'atteindre l'extrémité du dernier canal axial 25c et même si cela se produisait la rainure de détente 26 empêcherait tout suintement de graisse.It can be seen immediately from the above that the combination of channels 25a and chambers 25b has the effect of creating a pressure drop so great that the grease is prevented from reaching the end of the last axial channel 25c and even if this happens the detent groove 26 would prevent any grease dripping.

L'invention n'est pas limitée à l'exemple de réalisation représenté et décrit en détail, car différentes modifications peuvent y être apportées sans sortir de son cadre. En particulier, le nombre des canaux 25a peut être plus grand que celui représenté et il en est de même du nombre de chambres 25b à action centrifuge et du nombre de rainures 26 dites de détente. Des rainures 26 en forme de taraudage,dont le sens du pas serait dirigé pour tendre à ramener la graisse vers la chambre 25b la plus proche, peuvent également être prévues si le moyeu de roue 5 tourne toujours dans le même sens ou au moins de façon prépondérante dans un même sens.  The invention is not limited to the embodiment shown and described in detail, because various modifications can be made without departing from its scope. In particular, the number of channels 25a may be greater than that shown and the same applies to the number of chambers 25b with centrifugal action and the number of grooves 26 known as expansion. Tapping-shaped grooves 26, the direction of the pitch of which would be directed so as to tend to bring the grease to the nearest chamber 25b, can also be provided if the wheel hub 5 always turns in the same direction or at least so preponderant in the same sense.

Claims (7)

REVENDICATIONS 1 - Joint dynamique pour moyeu en particulier pour moyeu de roue contenant de la graisse, caractérisé en ce qu'il comporte une douille fixe (21) et une douille tournante (23), lesdites douilles coopérant pour délimiter, entre elles, un jeu de canaux annulaires (25a) de diamètre différent séparés par au moins une chambre de liaison (25b). 1 - Dynamic joint for a hub, in particular for a wheel hub containing grease, characterized in that it comprises a fixed bush (21) and a rotating bush (23), said bushes cooperating to delimit, between them, a set of annular channels (25a) of different diameter separated by at least one connecting chamber (25b). 2 - Joint selon la revendication 1, caractérisé en ce que les canaux (25a) et les chambres de liaison (25b) sont délimités par des parties à angle vif des douilles (21-23). 2 - Joint according to claim 1, characterized in that the channels (25a) and the connecting chambers (25b) are delimited by sharply angled parts of the sockets (21-23). 3 - Joint selon l'une des revendications 1 et 2, caractérisé en ce que la douille tournante (23) délimite une partie d'une chambre annulaire (32) dont le diamètre est plus grand que le plus grand diamètre du premier canal (25a). 3 - Joint according to one of claims 1 and 2, characterized in that the rotating sleeve (23) delimits part of an annular chamber (32) whose diameter is larger than the largest diameter of the first channel (25a ). 4 - Joint selon l'une des revendication 1 à 3, caractérisé en ce que la section de passage des canaux annulaires (25a) est plus faible que la section de passage des chambres (25b) joignant lesdits canaux (25a). 4 - Joint according to one of claims 1 to 3, characterized in that the passage section of the annular channels (25a) is smaller than the passage section of the chambers (25b) joining said channels (25a). 5 - Joint selon l'une des revendications 1 à 4, caractérisé par au moins une rainure de détente prévue dans la douille tournante (23), cette rainure (26) ouvrant au moins dans le dernier canal (25a) délimité par ladite douille tournante (23). 5 - Joint according to one of claims 1 to 4, characterized by at least one expansion groove provided in the rotating sleeve (23), this groove (26) opening at least in the last channel (25a) delimited by said rotating sleeve (23). 6 - Joint selon l'une des revendications 1 à 5, caractérisé par une rainure de détente conformée à la manière d'un taraudage dont le pas est opposé à celui du sens dans lequel la graisse tend à s'écouler. 6 - Joint according to one of claims 1 to 5, characterized by a relief groove shaped like a tapping whose pitch is opposite to that of the direction in which the fat tends to flow. 7 - L'application du joint dynamique de l'une des revendications 1 à 6, à un moyeu de roue de véhicule ferroviaire comportant à la fois une roue à pneumatique et une roue métallique, caractérisée en ce que la douille fixe (21) est montée sur un essieu (1) contre une partie duquel elle est poussée par les bagues de paliers (2, 3) supportant un moyeu (5) auquel est fixée une seconde douille (23), lesdits paliers et ladite douille fixe (21) étant retenus sur l'essieu (1) par un écrou (14) vissé sur ledit palier pour serrer une rondelle (15) à clavette (19) et présentant au moins une encoche (16) pour un boulon (17) traversant l'écrou et entrant dans ladite encoche.  7 - The application of the dynamic seal of one of claims 1 to 6, to a rail vehicle wheel hub comprising both a pneumatic wheel and a metal wheel, characterized in that the fixed bush (21) is mounted on an axle (1) against a part of which it is pushed by the bearing rings (2, 3) supporting a hub (5) to which a second bushing (23) is fixed, said bearings and said fixed bushing (21) being retained on the axle (1) by a nut (14) screwed onto said bearing to tighten a washer (15) with key (19) and having at least one notch (16) for a bolt (17) passing through the nut and entering said notch.
FR8315719A 1983-10-03 1983-10-03 DYNAMIC JOINT FOR ENSURING GREASE SEAL BETWEEN A FIXED PART AND A ROTATING PART Expired FR2552840B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8315719A FR2552840B1 (en) 1983-10-03 1983-10-03 DYNAMIC JOINT FOR ENSURING GREASE SEAL BETWEEN A FIXED PART AND A ROTATING PART

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8315719A FR2552840B1 (en) 1983-10-03 1983-10-03 DYNAMIC JOINT FOR ENSURING GREASE SEAL BETWEEN A FIXED PART AND A ROTATING PART

Publications (2)

Publication Number Publication Date
FR2552840A1 true FR2552840A1 (en) 1985-04-05
FR2552840B1 FR2552840B1 (en) 1988-02-26

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FR8315719A Expired FR2552840B1 (en) 1983-10-03 1983-10-03 DYNAMIC JOINT FOR ENSURING GREASE SEAL BETWEEN A FIXED PART AND A ROTATING PART

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008681C2 (en) * 1998-03-23 1999-09-24 Skf Eng & Res Centre Bv Train bearing unit with improved anti-frictional corrosion behavior.
CN102700361A (en) * 2012-06-18 2012-10-03 青岛阿迪尔车桥制造有限公司 Hub unit assembly for anti-lock braking system (ABS) gear ring
EP2511576A1 (en) * 2011-04-13 2012-10-17 Gamesa Innovation & Technology, S.L. Seal arrangement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978739A (en) * 1930-03-08 1934-10-30 Gen Motors Corp Seal or guard
US2014859A (en) * 1934-03-03 1935-09-17 Jr David Mitchell Bearing seal
US2274201A (en) * 1940-01-20 1942-02-24 Timken Roller Bearing Co Locomotive rod bearing seal
FR64700E (en) * 1953-10-02 1955-12-01 Improved seal between a rotating part and a fixed part
US3083972A (en) * 1960-06-15 1963-04-02 Int Harvester Co Seal for bearings
GB2065829A (en) * 1979-12-21 1981-07-01 Skf Uk Ltd Conveyor rollers; end cap bearing assemblies

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978739A (en) * 1930-03-08 1934-10-30 Gen Motors Corp Seal or guard
US2014859A (en) * 1934-03-03 1935-09-17 Jr David Mitchell Bearing seal
US2274201A (en) * 1940-01-20 1942-02-24 Timken Roller Bearing Co Locomotive rod bearing seal
FR64700E (en) * 1953-10-02 1955-12-01 Improved seal between a rotating part and a fixed part
US3083972A (en) * 1960-06-15 1963-04-02 Int Harvester Co Seal for bearings
GB2065829A (en) * 1979-12-21 1981-07-01 Skf Uk Ltd Conveyor rollers; end cap bearing assemblies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008681C2 (en) * 1998-03-23 1999-09-24 Skf Eng & Res Centre Bv Train bearing unit with improved anti-frictional corrosion behavior.
WO1999048742A1 (en) * 1998-03-23 1999-09-30 Skf Engineering & Research Centre B.V. Bearing unit, in particular railway axlebox bearing unit, having improved anti-fretting behaviour
EP2511576A1 (en) * 2011-04-13 2012-10-17 Gamesa Innovation & Technology, S.L. Seal arrangement
CN102700361A (en) * 2012-06-18 2012-10-03 青岛阿迪尔车桥制造有限公司 Hub unit assembly for anti-lock braking system (ABS) gear ring

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FR2552840B1 (en) 1988-02-26

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