SE537548C2 - Arrangement for lubrication of a differential gear for tandem operation - Google Patents

Arrangement for lubrication of a differential gear for tandem operation Download PDF

Info

Publication number
SE537548C2
SE537548C2 SE1250987A SE1250987A SE537548C2 SE 537548 C2 SE537548 C2 SE 537548C2 SE 1250987 A SE1250987 A SE 1250987A SE 1250987 A SE1250987 A SE 1250987A SE 537548 C2 SE537548 C2 SE 537548C2
Authority
SE
Sweden
Prior art keywords
differential
shaft
input shaft
wheel
lubricant
Prior art date
Application number
SE1250987A
Other languages
Swedish (sv)
Other versions
SE1250987A1 (en
Inventor
Mattias Ingesson
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1250987A priority Critical patent/SE537548C2/en
Priority to DE201311004022 priority patent/DE112013004022T5/en
Priority to PCT/SE2013/051009 priority patent/WO2014038994A1/en
Publication of SE1250987A1 publication Critical patent/SE1250987A1/en
Publication of SE537548C2 publication Critical patent/SE537548C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0483—Axle or inter-axle differentials
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

SAMMANDRAG Arrangemang far smorjning av en differentialvaxel f6r tandemd rift, dal- en driven ingaende axel (10) med ett forsta drivkraftfordelande differentialhjul och en drivande utgaende axel (30) med ett andra differentialhjul (40) forefinns jamte ett differentialhus (50) inrymmande ett differentialkors for samverkan med namnda differentialhjul (40). Arrangemanget innefattar medel for tillforsel av smorjmedel (0) i riktning fran den utgaende axel (30) mot den ingaende axeln (10) f6r smorjning av differentialvaxeln. Arrangemang innefattar vidare en distributionskonfiguration (110, 70a) anordnad all styra frail ett vid ett centralt utrymme utvandigt namnda ingAende axel (10) tillfort smorjmedel (0) utat i namnda differentialhus (50) i riktning fran namnda ingaende axel (10). Distributionskonfiguration inbegriper ett vasentligen trattformigt, kring den ingaende axeln (10) lopande styrelement (110) SUMMARY Arrangements for lubrication of a differential shaft for tandem rift, valley a driven input shaft (10) with a first driving force distributing differential wheel and a driving output shaft (30) with a second differential wheel (40) are present together with a differential housing (50) accommodating a differential cross for cooperation with the said differential wheel (40). The arrangement comprises means for supplying lubricant (0) in the direction from the output shaft (30) to the input shaft (10) for lubricating the differential shaft. Arrangements further comprise a distribution configuration (110, 70a) arranged all control frail a lubricant (0) supplied at a central space externally said input shaft (10) outwardly in said differential housing (50) in the direction of said input shaft (10). Distribution configuration includes a substantially funnel-shaped guide member (110) running around the input shaft (10)

Description

ARRANGEMANG FOR SMORJNING AV EN DIFFERENTIALVAXEL FOR TANDEMDRIFT TEKNISKT OMRADE Uppfinningen hanfor sig till ett arrangemang for smorjning av en differentialvaxel for tandemdrift enligt ingressen till patentkrav 1. Uppfinningen hanfor sig ocksa till ett motorfordon. TECHNICAL FIELD The invention relates to an arrangement for lubricating a differential shaft for tandem operation according to the preamble of claim 1. The invention also relates to a motor vehicle.

BAKGRUND 10 Fordon med tva drivande bakaxlar är utrustade med en transmissionsanordning kallad boggivaxel vilken ar avsedd aft fordela kraften fran motorn via en fordelningsvaxel till det framre av de !Dada bakre hjulparen, samt att aven overfora kraft till det bakre hjulparet. BACKGROUND 10 Vehicles with two driving rear axles are equipped with a transmission device called a bogie axle which is intended to distribute the power from the engine via a distribution shaft to the front of the rear wheel pair, and also to transmit power to the rear wheel pair.

Pa motsvarade satt är ett fordon med tva drivande framaxlar utrustad med en boggivaxel anordnad aft fordela drivkraften fran motorn forst till det bakre av de bada hjulparen och sedan vidare till det framre hjulparet. Correspondingly, a vehicle with two driving front axles is equipped with a bogie axle arranged to distribute the driving force from the engine first to the rear of the two wheel pairs and then on to the front wheel pair.

En konventionell boggivaxel ar anordnad pa sa satt aft kardanaxeln i sin ena ande ar forbunden med fordonets ordinarie vaxellada och i sin andra ande är ansluten till en ingaende axel hos boggivaxeln, vilken ar anordnad aft via en 20 fordelningsvaxel fordela kraften i boggivaxeln mellan det ena och andra hjulparet. Harfor innefattar boggivaxeln en differentialvaxel, fortsattningsvis aven benamnd boggidifferential. A conventional bogie shaft is arranged in such a way that the PTO shaft in one end is connected to the ordinary gearbox of the vehicle and in its other spirit is connected to an input shaft of the bogie shaft, which is arranged via a distribution shaft to distribute the force in the bogie shaft between one and the second pair of wheels. For this reason, the bogie shaft comprises a differential shaft, henceforth also called a bogie differential.

Vid drift belastas boggidifferentialen varfor kylning och smodning av kritiska ytor och komponenter hos erfordras. Detta astadkommes enligt en variant medelst olja fran oljesump, dar oljan pumpas till boggidifferentialen. Enligt en variant är oljan anordnad aft ledas i kanaler urborrade i ingaende axel och ett 1 boggidifferentialkors hos boggidifferentialen till ett utrymmet bakom ett bakre boggidifferentialhjul for aft sedan distribueras till en busSning och glidytor mellan differentialdrev och boggidifferentialkors. During operation, the bogie differential is loaded, which requires cooling and lubrication of critical surfaces and components. This is achieved according to a variant by means of oil from an oil sump, where the oil is pumped to the bogie differential. According to a variant, the oil is arranged aft led in channels drilled in the input shaft and a bogie differential cross of the bogie differential to a space behind a rear bogie differential wheel for aft then distributed to a bushing and sliding surfaces between differential gear and bogie differential cross.

Ett problem med dylika urborrningar i axlar och differentialkors är aft de 5 forsamrar h611fastheten. Vidare erfordras for astadkommande av urborrningarna komplicerade och kostsamma bearbetningsoperationer. A problem with such bores in shafts and differential crosses is that they collect the h611 strength. Furthermore, complicated and costly machining operations are required to perform the drilling.

SYFTE MED UPPFINNINGEN Ett syfte med foreliggande uppfinning är aft astadkomma ett kostnadseffektivt 10 arrangemang for smorjning av en differentialvaxel for tandemdrift som medfor effektiv smodning av differentialen med bibehallen hallfasthet. OBJECT OF THE INVENTION An object of the present invention is to provide a cost-effective arrangement for lubricating a differential shaft for tandem operation which results in efficient lubrication of the differential while maintaining the half-strength.

SAMMANFATTNING AV UPPFINNINGEN Dessa och andra syften, vilka framgar av nedanstaende beskrivning, 15 astadkommes medelst ett arrangemang och ett fordon av inledningsvis angivet slag och som vidare uppvisar sardragen angivna i den kannetecknande delen av bifogade sjalvstandiga patentkrav 1. Foredragna utforingsformer av arrangemanget är definierade i bifogade osjalvstandiga pate ntkrav. SUMMARY OF THE INVENTION These and other objects, which will become apparent from the following description, are accomplished by means of an arrangement and a vehicle of the kind initially indicated and further having the features set forth in the characterizing part of the appended independent claims 1. Preferred embodiments of the arrangement are defined. independent pate ntkrav.

Enligt uppfinningen ar en distributionskonfiguration anordnad att styra fran ett vid ett centralt utrymme utvandigt namnda ingaende axel tillfort smorjmedel utat i namnda differentialhus i riktning fran namnda ingaende axel. Harigenom erhalles effektiv smorjning av differentialvaxeln utan aft urborrningar i ingaende axel eller differentialkors erfordras varvid god hallfasthet hos ingaende axel och differentialkors bibehalls. Genom aft inga urborrningar erfordras astadkommes ett kostnadseffektivt arrangemang far smorjning av differentialvaxeln. 2 Enligt uppfinningen inbegriper namnda distributionskonfiguration ett vasentligen trattformigt, kring namnda ingaende axel lopande styrelement. Harigenom mojliggors god styrning av smorjmedel i det aft trattformen hos elementet bildar en bana for smorjmedlet som darigenom kan ledas for optimal sm6rjning av differentialvaxeln. According to the invention, a distribution configuration is arranged to steer from a lubricant supplied at a central space externally called inlet shaft externally in said differential housing in the direction of said inlet shaft. As a result, efficient lubrication of the differential shaft is obtained without drilling holes in the input shaft or differential cross, whereby good half-strength of the input shaft and differential cross is maintained. Because no boreholes are required, a cost-effective arrangement for lubrication of the differential shaft is achieved. According to the invention, said distribution configuration comprises a substantially funnel-shaped guide element running around said input shaft. This enables good control of lubricant in the aft funnel shape of the element, forming a path for the lubricant which can thereby be guided for optimal lubrication of the differential shaft.

Enligt uppfinningen är namnda styrelement anordnat i anslutning till det andra differentialhjulet. Harigenom mojliggors enkel inpassning i anslutning till befintlig differentialvaxel for effektiv styrning av namnda smorjmedel. According to the invention, said guide element is arranged in connection with the second differential wheel. This enables easy fitting in connection with the existing differential shaft for efficient control of the said lubricant.

Enligt en utforingsform av arrangemanget utgor namnda styrelement en integrerad del av det andra differentialhjulet. Harigenom erfordras ingen ytterligare komponent for 6stadkommande av effektiv styrning av namnda smOrjmedel. According to an embodiment of the arrangement, said guide element forms an integral part of the second differential wheel. As a result, no additional component is required to provide effective control of said lubricant.

Enligt uppfinningen är namnda distributionskonfiguration anordnad aft styra tillfort smorjmedel till ett utrymme mellan differentialkorsets respektive lagertappar och motsvarande differentialdrev. Harigenom erh6lles effektiv sm6rjning av namnda differentialvaxel i det aft smorjmedlet harigenom kommer i kontakt med tapparnas yta mot differentialdreven tack vare rotation hos differentialdreven och aven differentialdreven mot differentialhuset. According to the invention, said distribution configuration is arranged to guide supplied lubricant to a space between the respective bearing pins of the differential cross and the corresponding differential gear. As a result, efficient lubrication of said differential gear is obtained in the lubricant which thereby comes into contact with the surface of the pins against the differential gears thanks to rotation of the differential gears and also the differential gears against the differential housing.

Enligt en utforingsform av arrangemanget har namnda differentialdrev en 20 rundad eller fasad overgang till dess lagertapp vid dess mot namnda ing6ende axel vanda parti. Harigenom forbattras styrningen av namnda smorjmedel in mellan differentialkorsets respektive lagertappar och motsvarande differentialdrev. According to an embodiment of the arrangement, said differential gear has a rounded or bevelled transition to its bearing pin at its portion facing said input shaft. As a result, the control of the said lubricant between the respective bearing pins of the differential cross and the corresponding differential gear is improved.

Enligt en utforingsform av arrangemanget är namnda andra differentialhjul lagrat anordnat vid namnda inge'ende axel medelst ett koniskt rullager via vilket smorjmedel är anordnat aft ledas for utnyttjande av en medelst namnda rullagers koniska rullar alstrad pumpeffekt. Harigenom forbat-tras transporten av smorjmedlet ytterligare dar namnda rullar has det koniska rullagret genom pumpeffekten samverkar med namnda medel for tillforsel av smorjmedel for 3 en dubbelverkande effekt. Namnda medel for tillforsel av smorjmedel utg6rs enligt en variant av en pump f6r pumpning av smorjmedel, dar namnda smorjmedel enligt en variant utgors av olja och dar oljan pumpas frAn en oljesump. According to an embodiment of the arrangement, said second differential wheel is arranged arranged at said input shaft by means of a conical roller bearing via which lubricant is arranged to be guided for utilization of a pumping power generated by the conical rollers of said roller bearings. This further improves the transport of the lubricant where said rollers have the conical roller bearing through the pump effect cooperating with said means for supplying lubricant for a double-acting effect. Said means for supplying lubricant are according to a variant of a pump for pumping lubricant, where said lubricant according to a variant consists of oil and where the oil is pumped from an oil sump.

FIGURBESKRIVNING Foreliggande uppfinning kommer all forstas battre med hanvisning till foljande detaljerade beskrivning last tillsammans med de bifogade ritningarna, dar lika hanvisningsbeteckningar hanfor sig till lika delar genomgaende i de manga vyerna, och i vilka: Fig. 1 schematiskt illustrerar ett motorfordon enligt en utforingsform av foreliggande uppfinning; Fig. 2a schematiskt illustrerar en perspektivvy av ett arrangemang for smorjning av differential for tandemdrift enligt en utforingsfomn av foreliggande uppfinning; Fig. 2b schematiskt illustrerar en sidovy av arrangemanget i fig. 2a; Fig. 3 schematiskt illustrerar en sidovy av en del av ett arrangemang f6r smorjning av differential for tandemdrift enligt en utforingsform av foreliggande uppfinning; Fig. 4 schematiskt illustrerar en sidovy av en del av ett arrangemang for smorjning av differential for tandemdrift enligt en utforingsform av foreliggande uppfinning; Fig. 5a schematiskt illustrerar en perspektivvy av ett arrangemang for smorjning av differential for tandemdrift enligt en utforingsform av 25 foreliggande uppfinning; och Fig. 5b schematiskt illustrerar en sidovy av arrangemanget i fig. 5a. 4 BESKRIVNING AV UTFORINGSFORMER Fig. 1 illustrerar schematiskt ett motorfordon 1. Det exemplifierade fordonet 1 utgors av ett tungt fordon i form av en lastbil. Fordonet innefattar eft 5 arrangemang for smorjning av en differentialvaxel ingaende i en boggivaxel for tandemdrift, dar fordonet 1 innefattar tva drivande bakaxlar, i form av en f6rsta, framre drivande bakaxel X1 och en andra, bakre drivande bakaxel X2. DESCRIPTION OF THE DRAWINGS The present invention will be better understood by reference to the following detailed description when taken in conjunction with the accompanying drawings, in which like reference numerals appear in like manner throughout the many views, and in which: Fig. 1 schematically illustrates a motor vehicle according to an embodiment of the present invention. invention; Fig. 2a schematically illustrates a perspective view of an arrangement for lubricating differential for tandem operation according to an embodiment of the present invention; Fig. 2b schematically illustrates a side view of the arrangement of Fig. 2a; Fig. 3 schematically illustrates a side view of a part of an arrangement for lubrication of differential for tandem operation according to an embodiment of the present invention; Fig. 4 schematically illustrates a side view of a part of an arrangement for lubrication of differential for tandem operation according to an embodiment of the present invention; Fig. 5a schematically illustrates a perspective view of an arrangement for lubricating differential for tandem operation according to an embodiment of the present invention; and Fig. 5b schematically illustrates a side view of the arrangement of Fig. 5a. 4 DESCRIPTION OF EMBODIMENTS Fig. 1 schematically illustrates a motor vehicle 1. The exemplary vehicle 1 consists of a heavy vehicle in the form of a truck. The vehicle comprises, after arrangement for lubrication of a differential shaft, part of a bogie shaft for tandem operation, the vehicle 1 comprising two driving rear axles, in the form of a first, front driving rear axle X1 and a second, rear driving rear axle X2.

Fig. 2a illustrerar schematiskt en perspektiwy av ett arrangemang I for smorjning av en differentialvaxel for tandemdrift enligt en ufforingsform av foreliggande uppfinning, fig. 2b en sidovy av arrangemanget I i fig. 2a och fig. 3 schematiskt en sidovy av en del av arrangemanget I i fig. 2a. Fig. 2a schematically illustrates a perspective view of an arrangement I for lubrication of a differential shaft for tandem operation according to an embodiment of the present invention, Fig. 2b a side view of the arrangement I in Fig. 2a and Fig. 3 schematically a side view of a part of the arrangement I in Fig. 2a.

Arrangemanget I for sm6rjning av differentialvaxeln f6r tandemdrift utgor en del av en boggivaxel hos ett motorfordon med en framre drivande bakaxel X1 och en bakre drivande bakaxel X2. Arrangemanget I hos boggivaxeln 15 innefattar for dess drivning en ingaende axel 10 avsedd aft uppbara en splinesforbunden medbringare forbunden med en kardanaxel fran fordonets vaxellada. The arrangement I for lubricating the differential shaft for tandem operation forms part of a bogie shaft of a motor vehicle with a front driving rear axle X1 and a rear driving rear axle X2. The arrangement I of the bogie shaft 15 comprises for its drive an input shaft 10 intended to support a spline-connected carrier connected to a cardan shaft from the gearbox of the vehicle.

Den ingaende axeln 10 har ett framre drivkraftfOrdelande differentialhjul 20 utg6rande en del av en fordelningsvaxel hos boggivaxeln. Det framre differentialhjulet 20 är anordnat alt fordela en del av kraften fran kardanaxeln till boggivaxelns pinjongaxel (ej visad) vilkens axiella riktning är forskjuten relativt och vasentligen parallell med den ingaende axeln 10. Pinjongen hos pinjongaxeln ar anordnad alt overfora kraften till den framre drivande axeln X1 via ett icke visat kronhjul. 25 Arrangemanget I innefattar vidare en drivande utgaende axel 30. Den ingaende axeln 10 är forbunden med den utgaende axeln 30 via en boggidifferential (differentialvaxel). Den utgaende axeln 30 ar vasentligen koaxiellt lopande relativt den ingaende axeln 10. Den utgaende axeln 30 är anordnad att driva den bakre drivande bakaxeln X2 via en jamfOrt med kardanaxeln kommande fran fordonets vaxellada kort kardanaxel (ej visad). The input shaft 10 has a front drive-distributing differential wheel 20 forming part of a distribution shaft of the bogie shaft. The front differential wheel 20 is arranged to distribute a part of the force from the propeller shaft to the pinion shaft of the bogie shaft (not shown) whose axial direction is offset relatively and substantially parallel to the input shaft 10. The pinion of the pinion shaft is arranged to transmit the force to the front driving shaft X1 via a crown wheel (not shown). The arrangement I further comprises a driving output shaft 30. The input shaft 10 is connected to the output shaft 30 via a bogie differential (differential shaft). The output shaft 30 is substantially coaxially inclined relative to the input shaft 10. The output shaft 30 is arranged to drive the rear driving rear axle X2 via a parallel with the PTO shaft coming from the vehicle's geared short PTO shaft (not shown).

Namnda boggidifferential innefattar namnda framre differentialhjul 20, ett kring den utggende axeln 30 anordnat bakre differentialhjul 40, ett 5 differentialhus 50 inrymmande ett kring den ingaende axeln 10 anordnat differentialkors 60 med koniska differentialdrev 70 for samverkan med det framre och bakre differentialhjulet 20, 40. Said bogie differential comprises said front differential wheel 20, a rear differential wheel 40 arranged around the output shaft 30, a differential housing 50 housing a differential cross 60 arranged around the input shaft 10 with conical differential gears 70 for co-operation with the front and rear differential wheel 20, 40.

Differentialkorset 60 inbegriper ett kring den ingaende axeln 10 anordnat centralt pat 62 samt fyra fran det centrala partiet radiellt utskjutande lagertappar 64 dar respektive lagertapp 64 är vasentligen vinkelrat forskjuten relativt narliggande lagertapp 64. Kring respektive lagertapp 64 är ett koniskt differentialdrev 70 roterbart anordnat. The differential cross 60 comprises a central path 62 arranged around the input shaft 10 and four bearing pins 64 radially projecting from the central portion, each bearing pin 64 being substantially perpendicularly offset relative to the adjacent bearing pin 64. A conical differential gear 70 is rotatably arranged around each bearing pin 64.

Differentialkorset 60 är glidbart anordnat i differentialhuset 50. Harvid ligger respektive lagertapp 64 glidbart an mot differentialhusets 60 invandiga yta. The differential cross 60 is slidably arranged in the differential housing 50. In this case, the respective bearing pin 64 slidably abuts against the inner surface of the differential housing 60.

Differentialhuset 50 uppbar foljaktligen namnda differentialkors 60 med differentialdrev 70. Accordingly, the differential housing 50 supported said differential cross 60 with differential gear 70.

Det framre differentialhjulet 20 har mot differentialkorset 60 ett tillvant konsikt kuggparti 22 anordnat aft bringas i kuggingrepp med differentialdreven 70. Det bakre differentialhjulet 40 har ett motsvarande mot differentialkorset 60 20 tillvant konsikt kuggparti 42 anordnat aft bringas i kuggingrepp med differentialdreven 70. The front differential wheel 20 has, towards the differential cross 60, an accustomed conical gear portion 22 arranged to be toothed with the differential gears 70. The rear differential wheel 40 has a corresponding concave gear portion 42 accustomed to the differential cross 60 arranged to be engaged with the gear gears 70.

Det framre differentialhjulet 20 är anordnat aft lopa pa en pa den ingaende axeln 10 anordnad radial bussning 15. Det bakre differentialhjulet 40 är forbundet med den utgaende axeln 30 via ett splinesforband 32. The front differential wheel 20 is arranged to run on a radial bushing 15 arranged on the input shaft 10. The rear differential wheel 40 is connected to the output shaft 30 via a spline joint 32.

Differentialkorset 60 är forbundet med den ingAende axeln 10 via ett splinesforband. The differential cross 60 is connected to the input shaft 10 via a spline joint.

Det bakre differentialhjulet 40 är lagrat anordnat medelst ett forsta koniskt rullager 80 vid det icke visade boggivaxelhuset hos boggivaxeln. 6 Det bakre differentialhjulet 40 ar lagrat anordnat medelst ett andra koniskt rullager 90 vid den ingaende axeln 10. Det andra koniska rullagret inbegriper en uppsattning koniska rullar 92. The rear differential wheel 40 is mounted by means of a first conical roller bearing 80 at the bogie shaft housing (not shown) of the bogie shaft. The rear differential wheel 40 is mounted by means of a second conical roller bearing 90 at the input shaft 10. The second conical roller bearing comprises a set of conical rollers 92.

Namnda arrangemang for smOrjning av en differentialvaxel f6r tandemd rift innefattar medel 100 f6r tillforsel av smorjmedel 0 i riktning fran den utgaende axel mot den ingaende axeln for smorjning av namnda differentialvaxel. Said arrangement for lubricating a differential shaft for tandem rift comprises means 100 for supplying lubricant 0 in the direction from the output shaft to the input shaft for lubricating said differential shaft.

Namnda medel 100 for tillforsel av smorjmedel 0 inbegriper enligt en variant 6tminstone en pump anordnad all pumpa smorjmedel fr6n en 10 smarjmedelsump has boggivaxelhuset. Namnda smorjmedel 0 utgors enligt en variant av olja och namnda smorjmedelsump foljaktligen av en oljesump. Said means 100 for supplying lubricant 0 comprises according to a variant at least one pump arranged all the pump lubricant from a lubricant sump has the bogie shaft housing. Said lubricant 0 is constituted according to a variant of oil and said lubricant sump is consequently of an oil sump.

Enligt en variant är pumpen forbunden med den icke visade pinjongaxeln pa s6 s5tt all pumpen aktiveras vid drivning av pinjongaxeln sa all smorjmedel kan tillforas differentialvaxel d behov foreligger, dvs. d6 fordonet drivs sá all differentialdrev 70 och framre och bakre differentialhjul 20, 40 roterar. According to a variant, the pump is connected to the pinion shaft (not shown) in such a way that all the pump is activated when driving the pinion shaft so that all lubricant can be supplied to the differential shaft if necessary, ie. d6 the vehicle is driven so that all differential gears 70 and front and rear differential wheels 20, 40 rotate.

Enligt en variant är namnda smorjmedel 0 anordnat all ledas i oppningar i splinesforbandet 32 mellan utg5ende axel 30 och bakre differentialhjul 40. Harvid har skjuter de utskjutande splinespartierna has splines has utge'ende axel 30 och/eller bakre differentialhjul 40 ut en kortare stracka an motsvarande urtagningar has splines has bakre differentialhjul 40 och/eller utge'ende axel 30 for astadkommande av kanal for genomledning av namnda smorjmedel 0. According to a variant, said lubricant 0 is arranged all guided in openings in the spline joint 32 between the output shaft 30 and the rear differential wheel 40. In this case, the projecting spline portions have the splines having the output shaft 30 and / or the rear differential wheel 40 out a shorter distance than the corresponding recesses have splines have rear differential wheels 40 and / or output shaft 30 for providing channel for passage of said lubricant 0.

Namnda smorjmedel 0 är sedan anordnat att ledas via namnda andra koniska rullager 90 for utnyttjande av en medelst namnda rullagers 90 koniska rullar 92 alstrad pumpeffekt. Said lubricant 0 is then arranged to be guided via said second conical roller bearing 90 for utilizing a pumping power generated by means of said roller bearing 90 conical rollers 92.

Arrangemanget I innefattar vidare en distributionskonfiguration anordnad all styra fra'n ett vid ett centralt utrymme utvandigt namnda ingaende axel 7 tillfort smorjmedel 0 utat i namnda differentialhus 50 i riktning fran namnda ingaende axel 10. The arrangement I further comprises a distribution configuration arranged all the control from a lubricant 0 supplied at said central space externally to said central shaft 7 in the direction of said differential housing 50 in the direction of said input shaft 10.

Namnda distributionskonfiguration inbegriper eli vasentligen tratfformigt, kring namnda ingaende axel lopande styrelement. Namnda styrelement 1 är anordnat i anslutning till och vasentligen framfOr namnda bakre differentialhjul 40. Namnda trattformiga styrelement 110 är anordnat att lopa fran ett framre parti hos det bakre differentialhjulet i riktning snett framat utat relativt den ingaende axeln 10 och mot den mot namnda ingaende axel 10 vanda sidan hos namnda differentialdrev 70 och i riktning mot lagertapparna 64. Said distribution configuration eli essentially comprises a funnel-shaped guide element running around said input shaft. Said guide element 1 is arranged adjacent to and substantially in front of said rear differential wheel 40. Said funnel-shaped guide element 110 is arranged to run from a front portion of the rear differential wheel in a direction obliquely outwardly relative to the input shaft 10 and towards the said input shaft 10. the side of said differential gear 70 and in the direction of the bearing pins 64.

Namnda styrelement 110 ar anordnat att styra tillfort smorjmedel 0 till ett utrymme mellan differentialkorsets 60 respektive lagertappar 64 och motsvarande differentialdrev 70. Vidare styrs en del av smorjmedlet 0 sa att det hamnar pa kuggpartier 72 hos differentialdreven sa att smorjning vid kuggkontakten mellan differentialdreven 70 och det koniska kuggpartiet 42 hos det bakre differentialhjulet 40. Genom den medelst distributionskonfigurationen riktade smorjningen till kuggkontakten mellan differentialdreven 70 och koniska kuggpartiet 42 hos det bakre differentialhjulet 40 6kar mangden smorjmedel 0 som stanker runt i differentialvaxeln sa all olja genom rotationen hos differentialdreven 70 aven leds till det framre differentialhjulet 20 och kuggkontakten mellan de koniska kuggpartierna 22 hos framre differentialhjulet. Det framre differentialhjulet 20 är vid den mot differentialkorset 60 vanda sidan utformat och anordnat att fanga upp smorjmedlet 0 sa att det leds till den mellan ingaende axel 10 och framre differentialhjulet 20 anordnade radiala bussningen 15. Said guide element 110 is arranged to guide supplied lubricant 0 to a space between the respective cross pins 60 and bearing pins 64 and corresponding differential gears 70. Furthermore, a part of the lubricant 0 is controlled so that it ends up on tooth portions 72 of the differential gears so that lubrication at the tooth contact between the differential gears 70 and The conical gear portion 42 of the rear differential wheel 40. By means of the distribution configuration directed the lubrication to the tooth contact between the differential gear 70 and the conical gear portion 42 of the rear differential wheel 40, the amount of lubricant 0 which stinks around the differential gear so all oil through the rotation of the differential gear 70 is directed to it. the front differential wheel 20 and the gear contact between the conical gear portions 22 of the front differential wheel. The front differential wheel 20 is designed and arranged on the side facing the differential cross 60 to catch the lubricant 0 so that it is guided to the radial bushing 15 arranged between the input shaft 10 and the front differential wheel 20.

Namnda differentialdrev 70 har en rundad overgang 70a till dess lagertapp 64 vid dess mot namnda ingaende axel 10 vanda parti for att ytterligare underlatta styrning av namnda smorjmedel 0 till utrymmet mellan differentialkorsets 60 respektive lagertappar 64 och motsvarande differentialdrev 70. 8 I en altemativ ufformning kan differentialdrevet 70 i stallet for en rundad Overgang 70a vara fasad, med en eller flera faser, for aft pa motsvarande satt underlatta styrningen av olja till utrymmet. Said differential gear 70 has a rounded transition 70a to its bearing pin 64 at its portion facing said input shaft 10 to further facilitate control of said lubricant 0 to the space between the differential bearing 60 and bearing pins 64, respectively, and corresponding differential gear 70. In an alternative embodiment, the differential gear 70 instead of a rounded Transition 70a be bevelled, with one or more phases, in order to facilitate the control of oil to the space in a corresponding manner.

Genom aft utnyttja en distributionskonfiguration inbegripande namnda 5 trattformiga styrelement 110 anordnat kring den ingaende axeln 10 mojliggors god styrning av smorjmedel 0 i det aft trattformen hos styrelementet 110 bildar en bana for smorjmedlet 0 som darigenom kan led as for optimal smorjning av differentialvaxeln. By using a distribution configuration including said funnel-shaped guide elements 110 arranged around the input shaft 10, good control of lubricant 0 in the aft funnel shape of the guide element 110 forms a path for the lubricant 0 which can thereby be guided for optimal lubrication of the differential shaft.

Genom aft som i ufforingsformen illustrerad i fig. 2a-b och 3 anvanda ett separat styrelement 110 anordnat i anslutning till och vasentligen framfor namnda bakre differentialhjul 40 erfordras ingen omkonstruktion av bakre differentialhjul utan mojliggors enkel inpassning i anslutning till befintlig differentialvaxel for effektiv styrning av namnda smorjmedel 0. By using, as in the embodiment illustrated in Figs. 2a-b and 3, a separate guide element 110 arranged in connection with and substantially in front of said rear differential wheel 40, no rearrangement of rear differential wheels is required but simple fitting is possible in connection with existing differential gear for efficient control of said lubricant 0.

Fig. 5a illustrerar schematiskt en perspektivvy av ett alternativt arrangemang II for sm6rjning av en differentialvaxel fi5r tandemdrift enligt en utforingsform av foreliggande uppfinning, fig. 5b en sidovy av arrangemanget II i fig. 5a och fig. 4 schematiskt en sidovy av en del av arrangemanget II i fig. 5a. Fig. 5a schematically illustrates a perspective view of an alternative arrangement II for lubrication of a differential shaft for tandem operation according to an embodiment of the present invention, Fig. 5b a side view of the arrangement II in Fig. 5a and Fig. 4 schematically a side view of a part of the arrangement II in Fig. 5a.

Arrangemanget II enligt ufforingsformen illustrerad i fig. 4, 5a-b skiljer sig fran arrangemanget enligt utforingsformen illustrerad i fig. 2a-b och 3 vasentligen 20 genom utformningen av namnda styrelement. The arrangement II according to the embodiment illustrated in Figs. 4, 5a-b differs from the arrangement according to the embodiment illustrated in Figs. 2a-b and 3 substantially by the design of said control element.

Styrelementet 242 enligt denna ufforingsform utgor en integrerad del av det bakre hjulet 240. Harigenom erfordras ingen ytterligare komponent for astadkommande av effektiv styrning av namnda smorjmedel 0. The guide element 242 according to this embodiment forms an integral part of the rear wheel 240. As a result, no further component is required for providing efficient control of said lubricant 0.

Arrangemanget I; II kan anordnas i vilket som heist lannpligt fordon med tva eller fler drivande axlar som inbegriper en differentialvaxel med ett i ett differentialhus inhyst differentialkors. Arrangemanget I; II kan anordnas i vilket som heist lampligt fordon med tandemdrift, allhjulsdrift sasom exempelvis 8x8, tridemdrift eller motsvarande. 9 Beskrivningen oven exemplifierande uppfinningen har tillhandahallits i illustrerande och beskrivande syfte och ar inte avsedd all vara uttommande eller begransande. Beskrivningsexemplet har gjorts med tillampning av uppfinningen vid ett fordonet innefattar tva drivande bakaxlar X1, X2. I en alternativ ufformning kan uppfinningen pa analogt satt tillampas vid ett fordon med tva drivande framaxlar. I ett dylikt fall leds drivkraften fran fordonets vaxellada forst till en boggivaxel anordnad vid den bakre hjulaxel av de bade framaxlarna och sedan vidare till den framre av de bade framaxlarna. Vad som i ovanstaende beskrivningsexempel angivits som framre och bakre ska i 10 en dylik ufforingsform tolkas med avseende pa riktningen av drivkraften fran motorn/vaxeladan och inte med avseende pa placeringen i fordonet eller fordonets fardriktning. 10 Arrangement I; II can be arranged in any lift-duty vehicle with two or more driving axles which includes a differential shaft with a differential cross housed in a differential housing. Arrangement I; II can be arranged in any suitable vehicle with tandem drive, all-wheel drive such as, for example, 8x8, three-wheel drive or equivalent. The description above exemplifying the invention has been provided for illustrative and descriptive purposes and is not all intended to be exhaustive or limiting. The descriptive example has been made with application of the invention to a vehicle comprising two driving rear axles X1, X2. In an alternative embodiment, the invention can be applied in an analogous manner to a vehicle with two driving front axles. In such a case, the driving force is transmitted from the gearbox of the vehicle first to a bogie shaft arranged at the rear wheel axle of the two front axles and then on to the front of the two front axles. What is stated in the above description example as front and rear shall in such an embodiment be interpreted with respect to the direction of the driving force from the engine / gearbox and not with respect to the location in the vehicle or the direction of travel of the vehicle. 10

Claims (7)

PATE NTKRAVPATE NTKRAV 1. Arrangemang (I; II) f6r smorjning av en differentialvaxel for tandemdrift, innefattande en driven ingaende axel (10) med ett f6rsta drivkraftfordelande differentialhjul (20), en drivande utgaende axel (30) med ett andra differentialhjul (40; 240), ett differentialhus (50) inrymmande ett differentialkors (60) for samverkan med namnda differentialhjul (20, 40; 240), medel (100) for tillforsel av smorjmedel (0) i riktning fran utgAende axel (30) mot ingaende axel (10) for smorjning av namnda differentialvaxel, samt en distributionskonfiguration (110, 70a; 240, 70a) anordnad att styra frAn ett vid ett centralt utrymme utvandigt namnda ingaende axel (10) tillfort smOrjmedel (0) utht i namnda different ialhus (50) i riktning fran namnda ing6ende axel (10), vilken distributionskonfiguration inbegriper ett vasentligen tratfformigt, kring namnda ingAende axel (10) lopande styrelement (110; 242) kannetecknat av att styrelementet (110; 242) är anordnat i anslutning till namnda andra differentialhjul (40; 240) och anordnat att styra tillfort smorjmedel (0) till ett utrymme mellan differentialkorsets (60) respektive lagertappar (64) och motsvarande differentialdrev (70).Arrangement (I; II) for lubricating a differential shaft for tandem operation, comprising a driven input shaft (10) with a first driving force distributing differential wheel (20), a driving output shaft (30) with a second differential wheel (40; 240), a differential housing (50) accommodating a differential cross (60) for cooperating with said differential wheels (20, 40; 240), means (100) for supplying lubricant (0) in the direction from the output shaft (30) to the input shaft (10) for lubrication of said differential shaft, and a distribution configuration (110, 70a; 240, 70a) arranged to steer from a lubricant (0) supplied by said input shaft (10) externally at a central space in the direction of said differential housing (50) in the direction from said input shaft (10), which distribution configuration comprises a substantially funnel-shaped guide element (110; 242) running around said input shaft (10), characterized in that the guide element (110; 242) is arranged in connection with said second differential. all-wheel drive (40; 240) and arranged to guide supplied lubricant (0) to a space between the differential cross (60) and the bearing pins (64) and the corresponding differential gear (70). 2. Arrangemang enligt krav 1 kannetecknat av att det bakre differentialhjulet (40) har ett mot differentialkorset (60) tillvant koniskt kuggparti (42) anordnat aft bringas i kuggingrepp med differentialdrevet (70) och av att styrelementet (110; 242) är anordnat aft lopa fran ett framre pat hos det bakre differentialhjulet (40) i riktning snett framat utht relativt den ingaende axeln (10) och mot den mot ingaende axeln (10) vanda sidan hos differentialdrevet (70) och i riktning mot lagertapparna (64) varvid styrelementet stracker sig forbi kuggingreppet.Arrangement according to claim 1, characterized in that the rear differential wheel (40) has a conical gear portion (42) arranged towards the differential cross (60) arranged aft and is engaged in gear engagement with the differential gear (70) and in that the guide element (110; 242) is arranged aft run from a front path of the rear differential wheel (40) in a direction obliquely forward relative to the input shaft (10) and towards the side of the differential gear (70) facing the input shaft (10) and in the direction of the bearing pins (64), the guide element extends past the cog grip. 3. Arrangemang enligt krav 1 kannetecknat av att namnda differentialdrev (70) har en rundad overg6ng (70a) till dess lagertapp (64) vid dess mot namnda ingaende axel (10) vanda parti. 11Arrangement according to claim 1, characterized in that said differential gear (70) has a rounded transition (70a) to its bearing pin (64) at its portion facing said input shaft (10). 11 4. Arrangemang enligt krav 1 kannetecknat av att namnda differentialdrev (70) har en fasad overgang till dess lagertapp (64) vid dess mot namnda ingaende axel (10) vanda parti.Arrangement according to claim 1, characterized in that said differential gear (70) has a beveled transition to its bearing pin (64) at its portion facing said input shaft (10). 5. Arrangemang enligt nagot av kraven 1-4, kannetecknat av att namnda andra differentialhjul (40; 240) är lagrat anordnat vid namnda ingaende axel (10) medelst ett koniskt rullager (90) via vilket smorjmedel (0) är anordnat att ledas far utnyttjande av en medelst namnda rullagers (90) koniska rullar (92) alstrad pumpeffekt.Arrangement according to any one of claims 1-4, characterized in that said second differential wheel (40; 240) is mounted arranged at said input shaft (10) by means of a conical roller bearing (90) via which lubricant (0) is arranged to be guided far utilizing a pumping power generated by means of said roller bearings (90) conical rollers (92). 6. Arrangemang enligt nagot av kraven 1-5, kannetecknat av att namnda differentialvaxel utgors av en boggidifferential avsedd for en boggivaxel hos ett fordon.Arrangement according to any one of claims 1-5, characterized in that said differential shaft consists of a bogie differential intended for a bogie shaft of a vehicle. 7. Fordon (1) innefattande ett arrangemang (I; II) enligt nagot av kraven 1-6. 12Vehicle (1) comprising an arrangement (I; II) according to any one of claims 1-6. 12
SE1250987A 2012-09-04 2012-09-04 Arrangement for lubrication of a differential gear for tandem operation SE537548C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE1250987A SE537548C2 (en) 2012-09-04 2012-09-04 Arrangement for lubrication of a differential gear for tandem operation
DE201311004022 DE112013004022T5 (en) 2012-09-04 2013-08-29 Arrangement for lubricating a differential gear for tandem operation
PCT/SE2013/051009 WO2014038994A1 (en) 2012-09-04 2013-08-29 Arrangement for lubricating a differential gear for tandem operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1250987A SE537548C2 (en) 2012-09-04 2012-09-04 Arrangement for lubrication of a differential gear for tandem operation

Publications (2)

Publication Number Publication Date
SE1250987A1 SE1250987A1 (en) 2014-03-05
SE537548C2 true SE537548C2 (en) 2015-06-09

Family

ID=50237466

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1250987A SE537548C2 (en) 2012-09-04 2012-09-04 Arrangement for lubrication of a differential gear for tandem operation

Country Status (3)

Country Link
DE (1) DE112013004022T5 (en)
SE (1) SE537548C2 (en)
WO (1) WO2014038994A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015222671A1 (en) * 2014-11-18 2016-05-19 Musashi Seimitsu Industry Co., Ltd. differential gear
SE541530C2 (en) * 2017-11-21 2019-10-29 Scania Cv Ab Axle Assembly and Vehicle
CN108105371B (en) * 2018-01-10 2019-09-17 东风商用车有限公司 Differential case with lubricating oil groove
CN108131434B (en) * 2018-01-10 2019-09-17 东风商用车有限公司 Differential mechanism shell with optimized lubrication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905770A1 (en) * 1988-03-02 1989-09-14 Zahnradfabrik Friedrichshafen Method and apparatus for cleaning lubricating oil in a gearing
US4998600A (en) * 1988-03-09 1991-03-12 Zahnradfabrik Friedrichshafen Ag Oil lubrication system for the bearing of a shaft journal
JP2678694B2 (en) * 1991-08-06 1997-11-17 日野自動車工業株式会社 Interdef mechanism

Also Published As

Publication number Publication date
WO2014038994A1 (en) 2014-03-13
SE1250987A1 (en) 2014-03-05
DE112013004022T5 (en) 2015-04-30

Similar Documents

Publication Publication Date Title
US9506504B2 (en) Lubrication in a transfer case without a mechanical pump
US9759308B2 (en) Vehicle driving force distribution device
EP3213392B1 (en) Electric drive
DE102016211226B3 (en) Lubricant supply for an electric drive and motor vehicle with such a lubricant supply
US9816603B2 (en) Axle assembly with interaxle differential lubrication
EP2416036B1 (en) Differential unit and power transmission of a motor vehicle for loss-minimising oiling as needed
US8844396B2 (en) Axle assembly
US9046166B2 (en) Transfer gearbox
US8960362B2 (en) Lubrication arrangement for a drive axle of a haul vehicle
DE102004052870B4 (en) Manual transmission and transfer case with integrated lubrication systems
CN103620276B (en) Power transfer unit
WO2009139217A1 (en) Bearing lubricating structure for rotating shaft
CN106015534B (en) Differential gear
KR20120030060A (en) Limited slip differential with positive lube flow to clutch plates
SE537548C2 (en) Arrangement for lubrication of a differential gear for tandem operation
US9546727B2 (en) Carrier oil feed channel lubricating system
AU2005241094A1 (en) Improved lubrication in a transmission
DE112018001868B4 (en) ULTRA LIGHT REAR DRIVE ASSEMBLY (ULRAD ASSEMBLY) WITH CLUTCH LUBRICATION SYSTEM
US11085522B2 (en) Gravity-fed lubrication system with disconnect front axle
CN107636353A (en) Final driver
CN109416116A (en) Vehicle transmission gear
KR102366193B1 (en) axle assemblies and vehicles
WO2023187144A1 (en) Drive assembly for a vehicle driven using muscle force, and vehicle having a drive assembly of this type
CN106337922B (en) Differential gear
WO2018077687A1 (en) Drive train, in particular hybrid drive train for a motor vehicle