BOGIE FOR A RAIL VEHICLE AND RAIL VEHICLE WITH A BOGIE

Abstract

Disclosed is a bogie for a rail vehicle. One embodiment of a rail vehicle includes a bogie frame and at least four wheels arranged at the bogie frame. The bogie frame has a first and second frame parts, each frame part including a longitudinal beam and a cross beam. Each cross beam can be fixedly attached at the first end to the respective longitudinal beam. Each cross beam includes a pin at the second end. The longitudinal beam of the first frame part includes a receptacle for the pin of the second frame part and the longitudinal beam of the second frame part has a receptacle for the pin of the first frame part. The bogie can include one or more at bushing that includes elastomeric material, such as an elastomeric flange bushing, where the bushing is fixed to each cross beam or to the pin of the cross beam.

Claims

1-15. (canceled)

16. A Bogie for a rail vehicle, the bogie comprising: a bogie frame and at least four wheels which are arranged at the bogie frame, wherein the bogie frame comprises a length in a longitudinal direction (D), a width in a cross direction (C) to this longitudinal direction (D), and a height in a height direction (H) which is perpendicular to both the longitudinal direction (D) and the cross direction (C); wherein the bogie frame comprises first second frame parts each comprising a longitudinal beam and a cross beam, the cross beam comprising a first end and a second end, the cross beam fixedly attached at the first end to the respective longitudinal beam, and the cross beam comprising a pin at the second end; wherein the longitudinal beam of the first frame part comprises a receptacle for the pin of the second frame part and the longitudinal beam of the second frame part comprises a receptacle for the pin of the first frame part; and an at least partially elastomeric element fixed to each cross beam.

17. The bogie according to claim 16, wherein the at least partially elastomeric element is an elastomeric flange bushing.

18. The bogie according to claim 16, wherein the at least partially elastomeric element is fixed to the pin of each cross beam.

19. The bogie according to claim 16, wherein each cross beam is cranked on at least one end in the longitudinal direction (D).

20. The bogie according to claim 19, wherein each longitudinal beam is cranked in the height direction (H) so that a middle part of the longitudinal beam is lower than the first and second ends.

21. The bogie according to claim 16, wherein the at least partially elastomeric element is essentially cylindrical.

22. The bogie according to claim 21, wherein the elastomeric element comprises two identical halves, each half having a flange, wherein the identical halves are connected to define a flange bushing.

23. The bogie according to claim 16, wherein the receptacle for receiving the cross beam of the respective longitudinal beam is distanced from a middle of a length of the longitudinal beam by 150-400 mm.

24. The bogie according to claim 23, wherein the receptacle is distanced from the middle by 200-300 mm.

25. The bogie according to claim 16, further comprising at least one anti-roll stabilizer system.

26. The bogie according to claim 25, wherein the anti-roll stabilizer system comprises at least one spring element, connectable or connected to connection elements.

27. The bogie according to claim 26, wherein the at least one spring element comprises a torsion rod.

28. The bogie according to claim 26, characterized in that the anti-roll stabilizer system comprises at least one pendulum device, the pendulum device being connectable or connected to the bogie via a lever device and connectable to a car body of a rail vehicle or a bolster.

29. The bogie according to claim 25, wherein the bogie comprises two anti-roll stabilizer systems, each of the two anti-roll stabilizer systems arranged symmetrically to a cross middle plane of the bogie with one of the two anti-roll stabilizer systems on each of the first and second frame parts.

30. The bogie according to claim 29, wherein the two anti-roll stabilizer systems comprise at least one connection element and a spring element, the at least one connection element arranged on the cross beam such that the spring element is connectable or connected to the at least one connection element.

31. The bogie according to claim 16, wherein the bogie comprises brakes attached to the one or more of the longitudinal beams and/or to one or more of the cross beams.

32. The bogie according to claim 16, further comprising at least one motor attached to one of the cross beams.

33. The bogie according to claim 32, wherein the bogie comprises a gear support arranged between the pin and an attachment of the at least one motor.

34. The bogie according to claim 16, wherein the bogie is a carrying bogie.

35. A rail vehicle comprising: at least one bogie according claim 16; a car body attached to the at least one bogie.

Description

[0046] The invention will be described more precisely in the figures. The figures show:

[0047] FIG. 1: a perspective view of a motorized bogie,

[0048] FIG. 2: a perspective view of a frame part,

[0049] FIG. 3: a perspective view of a bogie frame,

[0050] FIG. 4: a perspective view of a bogie frame from below with anti-roll stabilizer systems,

[0051] FIG. 4a: a view of the bogie frame of FIG. 4 with the line of a cross section A-A,

[0052] FIG. 5: a cross section A-A of FIG. 4a

[0053] FIG. 6: a cross section of the attachment of the pin of the first frame part to the longitudinal beam of the second frame part,

[0054] FIG. 7: a side view of a flange bushing,

[0055] FIG. 8: a perspective view of a trailer bogie.

[0056] FIG. 1 shows a perspective view of a bogie 10. In this case the bogie 10 is a motorized bogie. The bogie 10 comprises a bogie frame 11, attached to which there are two secondary springs 12, two wheel sets 13, one brake (not visible) per wheel 18, out of which two brake disks 14 are visible, two motors 15, two gears 16 and two anti-roll stabilizer systems 60 (see FIG. 4). The bogie frame 11 comprises a first frame part 1 and a second frame part 2. The first frame part 1 comprises a longitudinal beam 3a (see FIG. 2) and a cross beam 4a (see FIG. 2), the second frame part 2 comprises similarly a longitudinal beam 3b and a cross beam 4b (see FIG. 3). The wheel sets 13 are arranged between the frame parts 1 and 2 and are attached to the ends of the longitudinal beams 3a and 3b. Each motor 15 is arranged between a wheel set 13 and a cross beam 4a or 4b and is attached to said cross beam 4a or 4b. Each gear 16 is connected to a motor 15 and a wheel set 13. Each gear 16 is fixed to the cross beam 4a, 4b by means of a pendulum device (not visible). Hence, there is a relative movement between motor 15 and gear 16. The relative movement between the motor 15 and the gear 16 is taken over for example by a curved tooth coupling (not visible). Each secondary spring 12 is supported on the first frame part 1 or the second frame part 2, respectively. The positioning of the secondary springs 12 is adapted to the bogie 10 to even out the load on the wheels 18 of the wheel set 13. As the bogie 10 does not comprise one fixed frame but two frame parts 1, 2 which are moveable relative to each other to a certain extent, the load on each wheel 18 of wheels sets 13 can differ and needs to be accounted for. The distance between the effective middle of the secondary springs 12 relative to each other in the cross direction W (see FIG. 2) is therefore adapted to the needs of the bogie 10 and is between 1600 mm and 2000 mm in the present embodiment.

[0057] FIG. 2 shows a perspective view of the first frame part 1 of FIG. 1. The frame part 1 comprises a longitudinal beam 3a and a cross beam 4a. The beams 3a and 4a have a hollow profile.

[0058] The frame part 1 comprises a length in a longitudinal direction D, a width in a cross direction W and a height in a height direction H. The cross direction W is arranged perpendicular to the longitudinal direction D and the height direction H is arranged perpendicular to the longitudinal direction D and the cross direction W.

[0059] The cross beam 4a comprises a middle part 43, a first end 40a and a second end 40b. The middle part 43 is formed along a cross axis C, the cross axis C being parallel to the cross direction W.

[0060] The cross beam 4a is fixedly attached to or is one piece with the longitudinal beam 3a by the first end 40a. The second end 40b comprises a pin 44 for attaching the second end 40b to the longitudinal beam 3b of the second frame part 2 (see FIG. 3). Each end 40a and 40b comprises a straight section 42 and a cranked section 41. The straight section 42 is formed along a straight axis S, the straight axis S being arranged parallel to the cross axis C of the middle part 43. The cranked section 41 is cranked in the longitudinal direction D.

[0061] The longitudinal beam 3a comprises an attachment section 33 and two symmetrically identical arms 35 on opposite sides of the attachment section 33. The arms 35 are arranged in opposite directions relative to a plane through a middle axis M, the middle axis M leading through the middle of the length of the longitudinal beam 3a in the cross direction W. The arms 35 comprise ends 30a and 30b. The ends 30a and 30b comprise each a rest element 34 and a cranked element 31. The cranked elements 31 are cranked in the height direction H. The attachments section 33 is formed along the longitudinal axis L leading in the longitudinal direction D. The cross beam 4a is attached to the attachment section 33. Further, the attachment section 33 comprises a receptacle 51 for the pin 44b of the second frame part 2. The receptacle 51 is a bore hole with an bore hole axis B which is arranged parallel to the middle axis M and is distanced to the middle axis M of the longitudinal beam 3a at a distance of 200-300 mm. This allows for an equal distribution of the static wheel load.

[0062] The frame part 1 comprises a support 50 for the support of a secondary spring 12 (see FIG. 1). The support 50 is arranged between the receptacle 51 and the cross beam 4a. The support 50 comprises an essentially round surface on top in height direction H.

[0063] FIG. 3 shows a bogie frame 11 in perspective view. The bogie frame 11 comprises two identical frame parts 1 and 2. The frame part 1 has been previously described in FIG. 2. The pin 44a of the first frame part 1 is arranged in the receptacle 51b of the second frame part 2. The pin 44b of the second frame part 2 is arranged in the receptacle 51a of the first frame part 1.

[0064] FIG. 4 shows a bogie 10 in a perspective view from below. The bogie 10 is a trailer bogie 10 corresponding to the bogie shown in FIG. 8. In this view the two anti-roll stabilizer systems 60 are visible. Each anti-roll stabilizer system 60 comprises a torsional rod 61, two lever devices 62, two pendulum devices 63. Furthermore, the torsional rods 61 are fixed to the cross beams 4a, 4b. Each lever device 62 is fixed on one end to the torsional rod 61 and to the pendulum device 63 on the other end. The torsional rod 61 is fastened to the bogie frame in a way that allows for rotational movement of the torsional rod 61 by at least one, preferably two, connection elements 64. The lever device 62 comprises a stop (not visible) for restricting the upward movement of the lever device 62. In particular, the connection elements 64 are back bearings, in particular rubber bushings. The torsional rod is supported by rubber bushings. The rubber bushings may comprise two half shells or may be made in a single piece. In particular, the rubber bushing or each half shell may comprise one or more rubber layer. The anti-roll stabilizer system can also be applied to a motorized bogie 10 as shown in FIG. 1.

[0065] FIG. 4a discloses the bogie frame 11 of FIG. 4 showing the line of a cross section A-A.

[0066] FIG. 5 shows the cross section A-A of FIG. 4a. The longitudinal beam 3a is cranked on each end 30a and 30b in the height direction H, such that attachment section 33 is lower than the ends 30a and 30b. The anti-roll stabilizer systems 60 are attached to the underside of cross beams 4a and 4b (see FIG. 2) by connection elements 64, here back bearings, in particular rubber bushings. The connection elements 64 comprise two half parts 64a and 64b, between which the torsion rod 61 is arranged. The pendulum device 63 comprises a connector end 65 for connecting the anti-roll stabilizer system 60 to a connector on a bolster or a car body. Between pendulum device 63 and torsion rod 61 there is lever device 62.

[0067] FIG. 6 shows a cross section of the pin 44a of the first frame part 1 attached to the longitudinal beam 3b of the second frame part 2.

[0068] The pin 44a comprises a bearing section 48

[0069] The bearing section 48 comprises a full profile. Alternatively, a thick walled pipe section is possible.

[0070] An elastomeric element 45, here a flange bushing comprising two halves, is attached to the bearing section 48 and held into place by a covering element 46, which is screwed onto the end of the bearing section 48 of the pin 44a. The covering element 46 has a larger diameter 83 than the bearing section 48 and therefore pre-stresses the elastomeric element 45.

[0071] The pin 44a and the elastomeric element 45 rest in the receptacle 51b of the second frame part 2. The receptacle 51b comprises two ledges to accommodate the elastomeric element 45.

[0072] Such a support of the cross beam 4a inside the longitudinal beam 3b allows for high flexibility against torsional movements and cardanic movements while simultaneously presenting a higher stiffness against radial or axial forces.

[0073] FIG. 7 shows the elastomeric element 45 in side view. The elastomeric element 45 comprises two identical halves 45a and 45b, each half 45a and 45b comprising a flange 90 and a middle part 91. The middle parts 91 of the elastomeric element 45 are arranged such that they touch on their respective front sides. The elastomeric element 45 comprises an elastomeric material with metal sheet layers for stabilization inside (not shown). The middle part and the flange can comprise one or more layers.

[0074] The elastomeric element 45 is made of natural rubber with a stiffness C of:

C radial=500 kN/mm,
C axial=250 kN/mm,
C torsional=1500 Nm/°, torsional angles of up to 5° need to be possible,
C cardanic=12000 Nm/°, cardanic angles of up to 2° need to be possible,

[0075] FIG. 8 shows a perspective view of a bogie 10 in form of a trailer bogie. The bogie 10 comprises a bogie frame 11, attached to which there are two secondary springs 12, two wheel sets 13, three brake calipers with brake disks per wheel set 13 and two anti-stabilizer systems 60 (see FIG. 4). The bogie frame 11 comprises a first frame part 1 and a second frame part 2. The first frame part 1 comprises a longitudinal beam 3a (see FIG. 2) and a cross beam 4a (see FIG. 2), the second frame part 2 comprises similarly a longitudinal beam 3b and a cross beam 4b (see FIG. 3). The wheel sets 13 are arranged between the frame parts 1 and 2 and are attached to the ends of the longitudinal beams 3a and 3b. Each secondary spring 12 is supported on the first frame part 1 or the second frame part 2, respectively. The positioning of the secondary springs 12 is adapted to the bogie 10 to even out the load on the wheels of the wheel set 13. As the bogie 10 does not comprise one fixed frame but two frame parts 1, 2 which are moveable relative to each other to a certain extent, the load on each wheel of wheels sets 13 can differ and needs to be accounted for. The distance between the effective middle of the secondary springs 12 relative to each other in the cross direction W (see FIG. 2) is therefore adapted to the needs of the bogie 10 and is between 1600 mm and 2000 mm in the present embodiment. In particular the distance between the effective middle of the secondary springs 12 of the trailer bogie 10 can differ from the distance between the effective middle of the secondary springs of a motorized bogie 10 according to FIG. 1.