SE526956C2

SE526956C2 - Navlagringsanordning

Info

Publication number: SE526956C2
Application number: SE0302684A
Authority: SE
Inventors: Tim Kingston
Original assignee: Volvo Constr Equip Holding Se
Priority date: 2003-10-08
Filing date: 2003-10-08
Publication date: 2005-11-29
Also published as: SE0302684D0; SE0302684L; WO2005033534A1

Abstract

The invention relates to a device (1) for supporting a wheel of a vehicle, comprising a wheel hub (11), a part (12) against which the hub (11) is supported and a roller bearing (20) between the hub (11) and the support part (12). The roller bearing (20) comprises a plurality of cable-like annular elements, which are arranged at an interval from one another and which together define a raceway in which a plurality of roller bodies are received.

Description

25 30 fràn drivaxeln till navet samt en ökning i moment fràn drivaxeln till navet. From the drive shaft to the hub and an increase in torque from the drive shaft to the hub.

TIDIGARE TEKNIK I patentansökan WO 03/039900 beskrivs en anordning för lagring av ett hjul hos ett arbetsfordon. Lagringen innefattar här en rad kulor, som är mottagna i lagerlopp direkt utformade i navet samt i en husdel.PRIOR ART Patent application WO 03/039900 describes a device for storing a wheel of a work vehicle. The bearing here comprises a series of balls, which are received in bearing races directly formed in the hub and in a housing part.

SAMANFATTNING AV UPPFINNINGEN Ett att àstadkomma en hjul, förutsättningar för en ur framställningssynpunkt mer syfte med uppfinningen är lagringsanordning vid ett som skapar kostnadseffektiv anordning, samt speciellt lämpad för arbetsfordon av mindre vikt.SUMMARY OF THE INVENTION To provide a wheel, prerequisites for a more object of the invention from a manufacturing point of view, the storage device is one which creates a cost-effective device, and is particularly suitable for work vehicles of minor weight.

Detta syfte uppnàs genom att rullagret innefattar ett flertal vajerliknande, vilka är inbördes tillsammans definierar en rullbana, ringformiga element, fràn i vilken ett flertal inrättade pà avstánd varandra och rullkroppar är mottagna. Denna lagerlösning skapar vidare förutsättningar för en reduktion av antalet ingàende delar samt gör anordningen mer kompakt.This object is achieved in that the roller bearing comprises a plurality of wire-like, which are mutually together defining a roller track, annular elements, from which a plurality arranged at a distance from each other and roller bodies are received. This storage solution also creates the conditions for a reduction in the number of components and makes the device more compact.

Enligt en utföringsform av uppfinningen innefattar rullagret fyra vajerliknande ringformiga element och så att de bildar hörnen i en Detta ger ett vid drift dessa är inrättade rektangel kring rullkropparna. av fordonet stabilt lagerarrangemang.According to an embodiment of the invention, the roller bearing comprises four wire-like annular elements and so that they form the corners of a rectangle arranged around the roller bodies during operation. of the vehicle stable storage arrangement.

Enligt ytterligare utföringsformer innefattar navet àtminstone ett säte för mottagande av ett första av de vajerliknande elementen, samt innefattar lagringsdelen átminstone ett säte för mottagande av ett andra av de 10 15 20 25 30 In FD C,\ \O CH CN 3 vajerliknande elementen. Detta medför ett stabilt lagerarrangemang som skapar förutsättningar för en làng livslängd.According to further embodiments, the hub comprises at least one seat for receiving a first of the wire-like elements, and the storage part comprises at least one seat for receiving a second of the wire-like elements. This results in a stable warehouse arrangement that creates the conditions for a long service life.

KORT BESKRIVNING AV FIGURER Uppfinningen skall beskrivas närmare i det följande, med hänvisning till de utföringsformer som visas pà de bifogade ritningarna, varvid FIG 1 visar anordningen i en schematisk tvärsnittsvy, och schematisk FIG 2 visar rullagret i figur l i en perspektivvy.BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail in the following, with reference to the embodiments shown in the accompanying drawings, in which Fig. 1 shows the device in a schematic cross-sectional view, and schematic Fig. 2 shows the roller bearing in Fig. 1 in a perspective view.

DETALJERAD BESKRIVNING AV FÖREDRAGNA UTFÖRINGSFORMER I figur 1 visas en navlagringsanordning 1 i en schematisk sidovy. Anordningen 1 är inrättad i ena änden -hus, 3. axelkàpan 3 sträcker sig en drivaxel 4. Drivaxeln 4 är av en hjulaxels 2 axelkàpa, eller Inuti vid sin ena ände 5 försedd med en navreduktion 6 i form av en planetväxel. Drivaxeln 4 är vid sin andra ände operativt förbunden med en centrumväxel (ej visad), som via en kardanaxel drivs av fordonets motor.DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Figure 1 shows a hub storage device 1 in a schematic side view. The device 1 is arranged in one end housing, 3. the shaft cover 3 extends a drive shaft 4. The drive shaft 4 is provided by the axle cover of a wheel axle 2, or inside at its one end 5 provided with a hub reduction 6 in the form of a planetary gear. The drive shaft 4 is at its other end operatively connected to a center gear (not shown), which is driven via a propeller shaft by the engine of the vehicle.

Planetväxeln 6 innefattar enligt konventionell teknik ett 7, ett flertal planethjul 8 och ett vilka är anordnade i drivande förbindning solhjul ringhjul 9, med varandra via kuggar. Anordningen 1 innefattar ett nav ll som också bildar en planetbärare, även kallad planethjulshàllare, som är inrättad för att hälla planethjulen 8. Planethjulen 8 är närmare bestämt lagrade pà tappar utskjutande i axiell riktning frán Antalet planethjul 8 i utföringsformen är tre, men inom ramen för uppfinningen navet ll. den föredragna 10 15 20 25 30 4 ryms att antalet. planethjul är ett, fler. tvà, fyra eller Navet 11 är avsett att bära ett hjul (ej visat) och är radiell lagringsdel 12. lagrat i riktning utanför samt mot en Lagringsdelen 12 bildar ett parti av axelkàpan 3. It den visade utföringsformen innefattar navet en ringformig del 13 och ett med den ringformiga delen 13 fast förbundet, skivformigt lock 14. Den ringformiga delen 13 är anordnad i radiell riktning utanför samt lagrad mot axelhuset. Den ringformiga delen 13 och det locket 14 är fast förbundna med varandra via Locket 14 skivformiga skruvförband 15. är anordnat i axiell riktning utanför planetväxeln 6 och skyddar denna mot den yttre miljön. Navet 11, och närmare bestämt locket 14, innefattar nämnda utskjutande tappar som bildar planetbäraren. Hjulet fastsätts med en konventionell fastgöringsanordning (ej visad) pä navet 11, vanligtvis ett bultförband.The planetary gear 6 comprises according to conventional technology a 7, a plurality of planet gears 8 and one which are arranged in driving connection sun gears ring gears 9, with each other via teeth. The device 1 comprises a hub 11 which also forms a planet carrier, also called planet wheel holder, which is arranged to pour the planet wheels 8. The planet wheels 8 are more precisely mounted on pins projecting in the axial direction from The number of planet wheels 8 in the embodiment is three, but within the invention hub ll. the preferred 10 15 20 25 30 4 accommodates that number. planetary wheels are one, more. two, four or The hub 11 is intended to carry a wheel (not shown) and is a radial bearing part 12. mounted in the direction outside and against a bearing part 12 forming a portion of the shaft cover 3. In the embodiment shown the hub comprises an annular part 13 and a with the annular part 13 fixedly connected, disc-shaped lid 14. The annular part 13 is arranged in radial direction outside and mounted against the shaft housing. The annular part 13 and the lid 14 are fixedly connected to each other via the lid 14 disc-shaped screw connections 15. are arranged in the axial direction outside the planetary gear 6 and protect it against the external environment. The hub 11, and more particularly the cover 14, comprises said projecting pins forming the planet carrier. The wheel is fixed with a conventional fastening device (not shown) to the hub 11, usually a bolted joint.

Anordningen innefattar vidare en bromsanordning 16.The device further comprises a braking device 16.

Bromsanordningen 16 utgörs av en vàt broms i form av en tvà uppsättningar bromslameller som vid drift roterar i förhållande till bromslameller (statorlameller) lamellbroms. Bromsanordningen 16 innefattar varandra. En första uppsättning är anslutna till en i radiell riktning utanför planethjulsbäraren 11 anordnad statisk del 18, i forna av axelkápan. 3. Anslutningen utgörs av ett flertal, lämpligtvis fyra stycken, pinnar 17 som är anordnade i motsvarande utformade urtagningar, eller borrhál, 17, är jämnt fördelade i anordningens omkretsriktning. i axelhuset 3. Hàlen, och därmed pinnarna Statorlamellerna är utformade med motsvarande utformade urtagningar vid. deras periferi för' pinnarna. Sonx ett 10 15 20 25 30 alternativ till pinnförbandet kan man tänka sig ett splinesförband. En andra uppsättning' bromslameller är rotationsfast anslutna till drivaxeln. 4. Anslutningen utgörs av ett splinesförband 19. Bromslamellerna är förskjutbara i axiell riktning pà nämnda pinnar 17 respektive splinesförband 19. Pà konventionellt sätt tillhör varannan bromsskiva den första uppsättningen och varannan den andra uppsättningen.The brake device 16 consists of a wet brake in the form of two sets of brake discs which in operation rotate relative to brake discs (stator discs) disc brake. The braking device 16 includes each other. A first set is connected to a static part 18 arranged in a radial direction outside the planet gear carrier 11, in the former of the axle cover. The connection consists of a plurality, preferably four pieces, of pins 17 which are arranged in correspondingly designed recesses, or boreholes, 17, are evenly distributed in the circumferential direction of the device. in the shaft housing 3. The heel, and thus the pins The stator slats are designed with correspondingly designed recesses at. their periphery for the 'sticks. Sonx a 10 15 20 25 30 alternative to the pin joint, one can imagine a spline joint. A second set of brake discs is rotatably connected to the drive shaft. 4. The connection consists of a spline joint 19. The brake discs are displaceable in the axial direction on said pins 17 and spline joints 19, respectively. In a conventional manner, every second brake disc belongs to the first set and every second to the second set.

Bromsanordningen 16 innefattar vidare en bromskolv 26 för ansättning av bromsen genom hoppressning av bromslamellerna och därmed ökning av friktionen mellan dem. Till bromskolven är kopplad en kanal 27 för tillförsel av olja för ansättning av bromsen. Pà en motsatt sida av bromslamellerna relativt bromskolven 26 eller mothàll, vilken lamellerna bringas vid ansättning av bromsen. En bildar ringhjulet 9 en tryckyta, mot làsring 28 är anordnad axiellt utvändigt om ringhjulet 9 för läsning av detta mot axelhuset 3. Vidare är en tätning 29 anordnad mellan navet ll och axelhuset 3 för avtätning av utrymmet för rullagret 20.The brake device 16 further comprises a brake piston 26 for applying the brake by compressing the brake discs and thereby increasing the friction between them. Connected to the brake piston is a channel 27 for supplying oil for applying the brake. On an opposite side of the brake slats relative to the brake piston 26 or abutment, which the slats are brought when applying the brake. The ring wheel 9 forms a pressure surface, against the locking ring 28 is arranged axially outside the ring wheel 9 for reading this against the shaft housing 3. Furthermore, a seal 29 is arranged between the hub 11 and the shaft housing 3 for sealing the space for the roller bearing 20.

Mellan navet 13 och axelkàpan 3 är ett rullager 20 inrättat, se även figur 2. flertal tråd- 2l, vilka är inrättade pà inbördes avstånd fràn varandra Rullagret innefattar ett eller vajerliknande, ringformiga element och tillsammans definierar en rullbana, i vilken ett flertal rullkroppar 22 är mottagna. Vart och ett av de vajerliknande elementen 21 har en cirkulär ringform sett i anordningens axiella riktning. Vart och ett av de vajerliknande elementen 21 har vidare en huvudsakligen cirkulär tvärsnittsform. 10 15 20 25 30 CH |\) C\ xD (71 .i )\ 6 elementen 21 är fördelade med huvudsakligen samma inbördes avstànd kring rullkropparna De vajerliknande 22. Enligt den i figur 2 visade utföringsformen innefattar rullagret 20 fyra vajerliknande ringformíga element 21 och dessa är inrättade sà att de bildar hörnen i en rektangel kring rullkropparna 22.Between the hub 13 and the shaft cover 3 a roller bearing 20 is arranged, see also figure 2. a plurality of wires 211, which are arranged at a mutual distance from each other. are received. Each of the wire-like elements 21 has a circular annular shape seen in the axial direction of the device. Each of the wire-like elements 21 further has a substantially circular cross-sectional shape. The elements 21 are distributed with substantially the same mutual distance around the roller bodies. The wire-like 22. According to the embodiment shown in Figure 2, the roller bearing 20 comprises four wire-like annular elements 21 and these are arranged so as to form the corners of a rectangle around the roller bodies 22.

Vart och ett av de vajerliknande, lángsträckta elementen 21 innefattar ett invändigt säte 23 för kontakt med rullkropparna 22. De vajerliknande elementen 21 kan härdat stal, De vajerliknande elementen 21 är vidare exempelvis vara av företrädesvis fjäderstàl. fastspända radiellt utàt mot navet 13 respektive inät mot axelkàpan 3. Navet ll innefattar àtminstone ett säte 24 för mottagande av de tvà radiellt yttre av de tvà element anligger alltsà med en yttre yta mot navet 13. vajerliknande elementen. Dessa vajerliknande Lagringsdelen (axelhuset) 12 innefattar ett säte 25 för mottagande av de tvà radiellt inre av de vajerliknande elementen 21. Dessa tvà vajerliknande element anligger alltsa med en yttre yta mot lagringsdelen 12. Samtliga vajerliknande element 21 anligger alltsa med en inre yta mot rullkropparna 22.Each of the wire-like, elongate elements 21 comprises an inner seat 23 for contact with the roller bodies 22. The wire-like elements 21 can be hardened steel. The wire-like elements 21 are furthermore, for example, preferably of spring steel. clamped radially outwards towards the hub 13 and inwardly towards the shaft cover 3. The hub 11 comprises at least one seat 24 for receiving the two radially outer of the two elements thus abutting with an outer surface against the hub 13. wire-like elements. These wire-like bearing part (shaft housing) 12 comprise a seat 25 for receiving the two radially inner of the wire-like elements 21. These two wire-like elements thus abut with an outer surface against the bearing part 12. All wire-like elements 21 thus abut with an inner surface against the roller bodies 22.

En. sädan lagring 'benämns ofta fyrpunktslager för att fyra ytor är slipade för kontakt med kulorna, se sätena 23 i de vajerliknande elementen 21. Med lagerlopp, eller ”race”, att ett utformat för avses ytomráde är mottagande av rullkropparna 22. Detta ytomràde uppvisar vanligtvis en välvd eller vinklad form.One. such bearing 'is often referred to as four-point bearing because four surfaces are ground for contact with the balls, see the seats 23 in the wire-like elements 21. an arched or angled shape.

Rullkropparna 22 utgörs av kulor eller rullar som är fördelade kring rullbanan utmed en cirkelformig bana. 10 15 i) Rullagret innefattar en hållare 26 för hållande av rullkropparna 22 pà inbördes avstånd längs rullbanan.The roller bodies 22 consist of balls or rollers which are distributed around the roller track along a circular track. I) The roller bearing comprises a holder 26 for holding the roller bodies 22 at a mutual distance along the roller track.

Hàllaren 26 utgörs här av en làngsträckt remsa med Hállaren 26 är urtagningar för rullkropparna 22. exempelvis av plastmaterial, sàsom termoplast eller härdplast, företrädesvis polyamid.The holder 26 here consists of an elongate strip with the holder 26 being recesses for the roller bodies 22. for example of plastic material, such as thermoplastic or thermosetting plastic, preferably polyamide.

Inom ramen för uttrycket ringform för de vajerliknande elementen inbegrips inte enbart slutna former, utan även att det finns ett avbrott i omkretsled.The term annular shape for the wire-like elements includes not only closed shapes, but also that there is a circumferential break.

Uppfinningen skall inte anses vara begränsad till de ovan beskrivna utföringsexemplen, utan en rad ytter- ligare varianter och modifikationer är tänkbara inom ramen för efterföljande patentkrav.The invention is not to be considered limited to the embodiments described above, but a number of further variants and modifications are conceivable within the scope of the appended claims.

Claims

10 15 20 25 30 'É-'Ví- 956 PATENTKRAV

Device for storing a wheel of a vehicle, comprising a wheel hub (11), a part (12) against which the hub (11) is mounted and a roller bearing (20) between the hub (11) and the bearing part (12). characterized in that the roller bearing (20) comprises a plurality of wire-like, annular elements (21), which are arranged at a mutual distance from each other and together define a roller track, in which a plurality of roller bodies (22) are received.

Device according to claim 1, characterized in that the wire-like elements. (21) are distributed at substantially the same mutual distance around the roller bodies (22).

Device according to claim 1 or 2, characterized in that the roller bearing (20) comprises four wire-like annular elements (21) and that these are arranged so as to form the corners of a rectangle around the roller bodies (22).

Device according to any one of the preceding claims, characterized in that the hub (II) comprises at least one seat (24) for receiving a first of the wire-like elements (21).

Device according to any one of the preceding claims, characterized in, (12) for receiving a second of the wire-like members, the storage part comprising at least one seat (25) of the elements (21).

Device according to any one of the preceding claims, characterized by, (20) (26) for holding the roller bodies (22) at a mutual distance along the roller bearing comprising a holder of the roller track.

Device according to one of the preceding claims, characterized in that the bearing part (12) forms a portion of a shaft housing (3).

Device according to any one of the preceding claims, characterized in that the portion (13) of the hub (II) which is arranged in contact with the roller bearing (20) is arranged radially outside the roller bearing (20).

Device according to any one of the preceding claims, characterized in that the device comprises a planetary gear (6), and that the hub (II) forms a planetary holder in the planetary gear.

A wheel axle (2) for which wheel axle a wheel, vehicle, comprises a device for (11), the hub (11) is mounted and a roller bearing bearing of (12) (20) comprising a wheel hub a part against which between the hub ( ll) and the bearing part (12) characterized in, that the roller bearing (20) comprises a plurality of wire-like, annular elements (21), which are arranged on mutually spaced apart and together define a (22) is roller track, in which a plurality of roller bodies are received.

11. ll. Wheel axle according to claim 10, characterized by, (21) substantially the same mutual distance around the roller bodies (22). that the wire-like elements are distributed with

Wheel axle according to claim 10 or 11, characterized in that (20) annular elements comprise four wire-like (21) that they form the corners of a rectangle around the roller bodies (22). the roller bearing and that these are set up so

Wheel axle according to any one of claims 10-12, characterized by, (11) (24) receiving a first of the wire-like elements (21). that the hub comprises at least one seat for

Wheel axle according to any one of claims 10-13, characterized by, (12) for receiving a second bearing part (25) elements (21). comprises at least one seat of the wire-like ones

Wheel axle according to any one of claims 10-14, characterized in that the roller bearing (20) comprises a holder (26) for holding the roller bodies (22) at a mutual distance along the roller track.

Wheel axle according to any one of claims 10-15, characterized in that the bearing part (12) (3). forms a portion of a shaft housing

17. Wheel axle according to any one of claims 10-16, characterized in that it. portion (13) of the hub (11) arranged in contact with the roller bearing (20) is arranged radially outside the roller bearing (20).

A wheel axle according to any one of claims 10-17, characterized in that the device comprises a planetary gear (6), and that the hub (11) forms a planetary holder in the planetary gear.

A vehicle comprising a device for storing a wheel, which device comprises a wheel hub (11), a part (12) (11) is mounted and a roller bearing (20) between the hub (11) and the bearing part (12) is characterized of, against which the hub that the roller bearing (20) comprises a plurality of wire-like annular elements (21), which are arranged at a mutual distance from each other and together define a roller track, in which a plurality (22) are roller bodies received.

Vehicle according to claim 19, characterized in that the wire-like elements (21) are distributed with substantially the same mutual distance around the roller bodies (22).

Vehicle according to claim 19 or 20, characterized in that (20) annular elements comprise four wire-like (21) that they form the corners of a rectangle around the roller bodies (22). the roller bearing and that these are set up in this way

Vehicle according to any one of claims 19-21, characterized by, (11) (24) receiving a first of the wire-like elements (21). that the hub comprises at least one seat for

Vehicle according to any one of claims 19-22, characterized by, (12) for receiving a second of the wire-like members that the storage part comprises at least one seat (25) elements (21).

Vehicle according to any one of claims 19-23, characterized by, (20) a holder (26) holding the roller bodies (22) at a mutual distance along the roller conveyor. that the roller bearing includes for

Vehicle according to one of Claims 19 to 24, characterized in that the storage part (12) (3). forms a portion of a shaft housing 10 526 956 13

Vehicle according to one of Claims 19 to 25, characterized in that the portion (13) of the hub (II) which is arranged in contact with the roller bearing (20) is arranged radially outside the roller bearing (20).

Vehicle according to any one of claims 19-26, characterized in that the device comprises a planetary gear (6), and that the hub (II) forms a planetary holder in the planetary gear.

Use of any one of claims 1-9 of any device according to the storage of a wheel of work vehicles.