EP0727339A2 - Laufwerksanordnung mit minimalem Spiel für ein Schienenfahrzeug mit radialer Einstellung von Radkappen oder Radsätzen - Google Patents

Laufwerksanordnung mit minimalem Spiel für ein Schienenfahrzeug mit radialer Einstellung von Radkappen oder Radsätzen Download PDF

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Publication number
EP0727339A2
EP0727339A2 EP96200425A EP96200425A EP0727339A2 EP 0727339 A2 EP0727339 A2 EP 0727339A2 EP 96200425 A EP96200425 A EP 96200425A EP 96200425 A EP96200425 A EP 96200425A EP 0727339 A2 EP0727339 A2 EP 0727339A2
Authority
EP
European Patent Office
Prior art keywords
running gear
ring
running
assembly
gear assembly
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.)
Withdrawn
Application number
EP96200425A
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English (en)
French (fr)
Other versions
EP0727339A3 (de
Inventor
Nikolaas Huibert Cornelis Engbertus Zeevenhooven
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.)
ZEEVENHOOVEN-GEUSKENS, MARIA FRANCISCA JOHANNA
Original Assignee
STORK RMO BV
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 STORK RMO BV filed Critical STORK RMO BV
Publication of EP0727339A2 publication Critical patent/EP0727339A2/de
Publication of EP0727339A3 publication Critical patent/EP0727339A3/xx
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
    • B61F5/46—Adjustment controlled by a sliding axle under the same vehicle underframe

Definitions

  • the invention relates to a running gear assembly for a rail vehicle comprising a plurality of two-wheeled running gears, at least one of which is radially steerable using steering levers mutually connecting the running gears.
  • the object of the present invention is to provide a rail vehicle wherein the plays are minimized and wherein they are not enlarged during use.
  • At least the steerable running gear comprises a ring assembly system formed by at least a first and a second ring assembly, the first of which is connected to a sub-frame forming part of the relevant running gear and the second is connected to both steering levers connecting the running gear to other running gears, and comprises coupling means for mutually coupling the ring assemblies and levers such that the wheels forming part of the running gear are adjusted substantially radially.
  • Ring assembly systems seem generally to have minimum play and this favourable characteristic is enhanced when ring assembly systems are used in the form of ball ring assembly systems.
  • the ring assembly system comprises two ring assemblies which are located concentrically above each other, and in which at least two of the four rings of said two ring assemblies are mutually connected.
  • both inner, both outer or even one inner and one outer ring are mutually connected.
  • Three independent rings or pairs of rings then remain, which are coupled with the four elements: the first, the second steering lever, subframe and pair of wheels/wheel set by means of a gear connection, rod system or simple leave spring elements (with very small rotation angles).
  • the ring assembly system comprises a first, a second and a third ring.
  • the first ring is connected to the sub-frame and the second and third ring are connected to both levers connecting the running gear to the other running gears and the coupling means comprise a pinion which is arranged on one of the rings and which is in engagement with connections fixed to both other rings.
  • Such a running gear assembly is not only suitable as running gear assembly for trains but also for subways, express trams and trams. Particularly in these latter categories of vehicle there is a trend in recent years toward so-called depressed-floor vehicles, wherein the floor of these vehicles lies as low as possible in order to facilitate entry and exit.
  • the present invention also takes account of this latter possibility in that according to a preferred embodiment the wheels of the running gear are fixed to separate shafts and the ring assemblies are fixed between the wheels.
  • This preferred embodiment makes it possible for the depressed floor to extend continuously between the wheels.
  • a running gear assembly 1 comprising two running gears 2,3 as well as two running wheel assemblies 4,5.
  • the running gear 2 is connected to the running gear 3 by means of a steering lever 6, while running gear 2 is connected to running wheel assembly 4 by means of a steering lever 7 and the running gear 3 is connected to running wheel assembly 5 by means of a steering lever 8.
  • the running gear 2 is formed by a sub-frame 9, inside which is mounted a wheel set 10.
  • Running gear 2 can be embodied with individual wheels as well as with wheels mounted on a fixed shaft (a so-called wheel set), with separate wheels mounted on a stationary, continuous shaft, with separate wheels connected via an assembly of cardan shafts, with or without couple-influencing or amortizing elements.
  • the sub-frame 9 is fixedly connected to the middle ring 11 of a ring assembly 14 present on the sub-frame and further comprising an inner ring 12 and an outer ring 13.
  • the outer ring 13 is connected to the lever 6, while the inner ring 12 is connected to lever 7.
  • a pinion 15 is arranged rotatably on the middle ring 11.
  • Pinion 15 comprises a first sector 16 with a small radius and a second sector 17 with a large radius.
  • a first gear rack 18 Arranged on the internal ring 12 is a first gear rack 18 which is in engagement with the teeth of the first sector 16 of pinion 15, while on the external ring 13 is arranged a second gear rack 19, the teeth of which are in engagement with the teeth of the second sector 17 of pinion 15.
  • FIG. 2 is shown another embodiment of a running gear according to the invention wherein use is made of a two-part ring assembly with two auxiliary steering levers and wherein the wheels are rotatable on a vertical axis.
  • the running gear 20 depicted in fig. 2 comprises a sub-frame 21 in which are mounted two bearings 24 rotatable on a vertical axis.
  • Two wheels 22 are fixed to shafts 23 which are mounted at one of their ends in bearings 24 rotatable on a vertical axis.
  • the shafts are mounted in floating bearings 25 which are connected by means of steering levers 25' to a ring assembly 26.
  • the ring 26 forms together with ring 27 a ring assembly, wherein the outer ring 27 is fixed to the sub-frame 21.
  • the outer ring 27 is also connected rotatably in the horizontal plane to two steering levers 28,29 extending to adjoining running gears, wherein lever 28 is extended into the region of the internal ring 26.
  • the lever 28 is further connected for rotation at its end to the internal ring 26 by means of an auxiliary lever 30, while lever 29 is connected to the internal ring 26 by means of an auxiliary lever 30'.
  • auxiliary steering levers 30,30' ensure that when the lever 28 turns in the horizontal plane the external ring 27 moves therewith, whereby the shafts 23 and therewith wheels 22 will assume the correct angular position, as in the first embodiment.
  • the combination is shown of a ring assembly system provided with two rings and a sub-frame, wherein the wheels are each rotatable separately relative to the sub-frame, the two construction variants do not necessarily have to be applied in combination. It is for instance possible to combine a sub-frame having wheels not mounted on a vertical axis with a ring assembly provided with more than two rings, as well as a combination of a sub-frame having wheels mounted on a vertical axis with a ring assembly system provided with three ring assemblies.
  • Fig. 3 shows a running gear assembly provided with three running gears.
  • the construction and configuration of this running gear assembly correspond largely with the construction of the running gear assembly shown in fig. 1, with the difference that the running wheel assemblies are omitted.
  • this running gear assembly a second coupling is provided between the individual running gears above the coupling by levers already shown in fig. 1.
  • One embodiment has rigid triangular constructions 31,32 which start from the sub-frames and which meet each other in the middle between two adjoining running gears in a kind of ball joint 33. During turning the length of the coupled "triangles" becomes greater; this is taken up in that the ball joint 33 can slide on one side in lengthwise direction as a result of a system of biased springs between the ball joints and the levers.
  • the running gear 2 is shown in more detail in fig. 4.
  • the running gear comprises a sub-frame 9 which is formed by a base plate 34 on which the ring assembly 14 is fixed.
  • a schematically shown air spring 35 which can be used to support the bodywork to be arranged on the running gear assembly.
  • On the base plate is arranged an extension 36 on which is mounted a traction motor 37.
  • a traction motor 37 is also mounted on the other side of base plate 34. It is also possible however to arrange elsewhere on the sub-frame one or more air springs or other springs fulfilling the secondary spring function.
  • gearbox 38 On the outside of traction motor 37 is fixed a gearbox 38 which can rotate with the traction motor 37 on an axis parallel to the axis of rotation of the motor shaft.
  • the gearbox 38 has a dual function: it functions not only as gearbox but also as support and bearing mounting for the wheel shaft 40 to which the wheel 41 is attached. It is important herein that gearbox 38 is rotatable relative to shaft 39.
  • bracket 42 is fixed to the base plate 34 which extends to a position above the end of gearbox 38.
  • a spring element 43 Received between the relevant end and bracket 42 is a spring element 43 which can take the form of a helical spring or a rubber spring and which fulfills the primary spring function.
  • each shaft is driven separately by a traction motor.
  • both wheels of the running gear are not mutually coupled. This is possible however in this configuration; it is also possible to mutually couple both traction motors with one shaft so that both wheels 41 are mutually coupled for rotation.
  • running shafts are not used such a coupling of both wheels is necessary to obtain good running and travel characteristics.
  • the lever 7 shown in fig. 1 takes the form in the present embodiment of a box 44 which is fixedly mounted to the inner ring 12.
  • the box 44 is connected to a tube 49 in the form of a torsion bar which is connected to a steel girder 50.
  • the steel girder 50 is connected at its forward side to a bearing 51 inside which is mounted a shaft 52 of the running wheel assembly 4.
  • the bearing permits a rotation such that in the present embodiment it is possible to radially adjust the shaft 52.
  • an adjusting mechanism formed by auxiliary bearings 54 which are arranged on shaft 52 and which are connected via a triangle 55 to a stabilisation unit 56 which can move in transverse direction over the girder 50.
  • Stabilisation unit 56 is controlled from the running gear 2 by means of the triangle 57 connected to the base plate 34 of running gear 2. This results in a kinematic coupling.
  • Such a stabilisation unit 56 forms part of the prior art and consists of a ball joint mounted under bias.
  • the construction can be embodied such that a threshold force is required to obtain a rotation in the xy-plane between running wheel assembly and first wheel pair.
  • a spring for instance an air spring, can be arranged to support the bodywork at that position.
  • the levers are suspended from the bodywork by means of suspension elements 58 which permit a horizontal movement.
  • An alternative provides an embodiment wherein the bodywork is suspended from a steering lever which in that case takes a rigid form in the vertical plane.
  • the lever 60 is now connected by a flat, hinged girder which is joined on the one side to the lever and on the other side to one of the rings.
  • the hinges used are clamped leaf spring elements which allow only a movement in the zx-plane.
  • This flat girder is necessary as connecting part to enable a vertical springing of the running gear sub-frame.
  • a tube 49 is also arranged as connecting part which fulfills a roll stability function in respect of the rolling movement of the bodywork on an x-axis.
  • torsion tube 49 can be used to resiliently absorb the rolling of the vehicle.
  • the rod can then easily be extended by causing it to extend in the interior of the girders 50,60.
  • the running shaft is adjusted radially; this is not necessary when the distance between the running shaft and the first running gear is small.
  • Fig. 5 shows a following construction of a running gear 2. This construction corresponds largely with the construction of the running gear shown in fig. 4 but differs therefrom in a number of points.
  • Both traction motors 37 in fig. 4 are substituted by a single traction motor 61 which in the present case is suspended from the lever. Rotation of this motor is carried over to a transmission box 63 by means of a cardan shaft 62.
  • This box is connected by means of a shaft 64 to gearbox 38 on the one side and connected by means of a short shaft (not shown) to gearbox 38 on the other side. It is possible, though not essential, to make use for this transmission box 63 of an hydraulic transmission box which ensures that, while both output shafts substantially take over the movement of the driving shaft 62, vibrations between both output shafts are not transmitted mutually or to the driving shaft.
  • a connecting lever 66 is arranged on the girder 50 to transmit longitudinal forces between the supported bodywork and the relevant lever.
  • the traction motor 61 does not have to be fixed to the lever; it is possible to fix this motor in longitudinal direction to the bodywork.
  • the running gear depicted in fig. 5 shows a running gear to be arranged in the middle of a running gear assembly; there are levers which extend to both sides and which are not connected to a running wheel assembly.
  • the running gears are connected in kinematically correct manner.
  • the rotations on z-axes of the running gears are strictly kinematic and mutually coupled with minimal plays.
  • Each wheel set or wheel pair can make a determined movement strictly laterally (y-direction) and controlled by forces in relation to the kinematic assembly.
  • fig. 6 shows an embodiment which substantially corresponds with the embodiment shown in fig. 4, but wherein the construction of the ring assembly is different.
  • the ring assembly is formed by three ring assemblies 13,11,12 lying in one plane. As is generally known in the relevant art, these are mutually connected by a ball circulation.
  • both inner rings are mutually connected and form a unit with a base plate 71, on which for instance a carrying spring can be located.
  • both mutually connected inner rings and the base plate form one unit with the steering lever 48.
  • the upper outer ring 74 is connected with the steering lever 50 and the lower outer ring with the sub-assembly of sub-frame, pairs of wheels/wheel set.
  • the mutually coupled pinions 79 and 81 which are journalled in the base plate 71 engage respective racks of the outer rings. This leads to a relative mutually independent rotation of the sub-assemblies: inner rings and base plate, upper outer ring, lower outer ring.
  • the thus described construction has a much greater rigidity than the construction shown in fig. 4. This rigidity is brought about particularly by plate 71 which extends over the whole surface of the ring assembly.
  • the function of the steering lever is executed by the carriage.
  • the carriage and the wheel sets can execute a lateral movement, that is in the y-direction, controlled by forces; in the case of a rotation around the z-axis, there is question of a coupling between the movement of the carriage and the cinematic unit of the wheel sets.
  • the hangers 58 can be eliminated.
EP96200425A 1995-02-17 1996-02-19 Laufwerksanordnung mit minimalem Spiel für ein Schienenfahrzeug mit radialer Einstellung von Radkappen oder Radsätzen Withdrawn EP0727339A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9500315A NL9500315A (nl) 1995-02-17 1995-02-17 Loopwerkstelsel met minimale speling voor een railvoertuig met radiale instelling van wielparen of wielstellen.
NL9500315 1995-02-17

Publications (2)

Publication Number Publication Date
EP0727339A2 true EP0727339A2 (de) 1996-08-21
EP0727339A3 EP0727339A3 (de) 1996-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200425A Withdrawn EP0727339A2 (de) 1995-02-17 1996-02-19 Laufwerksanordnung mit minimalem Spiel für ein Schienenfahrzeug mit radialer Einstellung von Radkappen oder Radsätzen

Country Status (2)

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EP (1) EP0727339A2 (de)
NL (1) NL9500315A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200004646A1 (it) * 2022-03-10 2023-09-10 Aar Ingegneria Di Ferrario Roberto & C S A S Carrello ferrotranviario migliorato e veicolo ferrotranviario provvisto di tale carrello

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH399522A (de) * 1962-11-13 1965-09-30 Schweiz Wagons Aufzuegefab Mehrteiliges Schienen-Gelenkfahrzeug
US3230899A (en) * 1963-06-06 1966-01-25 Pneuways Dev Company Private L Wheeled vehicles and bogies therefor
FR2562859A1 (fr) * 1984-04-11 1985-10-18 Anf Ind Dispositif de montage d'un essieu orientable destine a supporter les extremites adjacentes de deux voitures de materiel ferroviaire urbain et rames composees de telles voitures
WO1985005602A1 (en) * 1984-05-30 1985-12-19 Officina Meccanica Della Stanga - O.M.S. S.P.A. Articulation system for articulated depressed-floor tramway carriages

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH399522A (de) * 1962-11-13 1965-09-30 Schweiz Wagons Aufzuegefab Mehrteiliges Schienen-Gelenkfahrzeug
US3230899A (en) * 1963-06-06 1966-01-25 Pneuways Dev Company Private L Wheeled vehicles and bogies therefor
FR2562859A1 (fr) * 1984-04-11 1985-10-18 Anf Ind Dispositif de montage d'un essieu orientable destine a supporter les extremites adjacentes de deux voitures de materiel ferroviaire urbain et rames composees de telles voitures
WO1985005602A1 (en) * 1984-05-30 1985-12-19 Officina Meccanica Della Stanga - O.M.S. S.P.A. Articulation system for articulated depressed-floor tramway carriages

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200004646A1 (it) * 2022-03-10 2023-09-10 Aar Ingegneria Di Ferrario Roberto & C S A S Carrello ferrotranviario migliorato e veicolo ferrotranviario provvisto di tale carrello
EP4242085A1 (de) * 2022-03-10 2023-09-13 AAR Ingegneria di Ferrario Roberto & C. S.a.s. Verbessertes eisenbahndrehgestell und schienenfahrzeug mit einem solchen drehgestell

Also Published As

Publication number Publication date
EP0727339A3 (de) 1996-09-04
NL9500315A (nl) 1996-10-01

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