EP2551166B1 - Steering bogie, particularly for a tram carriage - Google Patents

Steering bogie, particularly for a tram carriage Download PDF

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Publication number
EP2551166B1
EP2551166B1 EP12177914.4A EP12177914A EP2551166B1 EP 2551166 B1 EP2551166 B1 EP 2551166B1 EP 12177914 A EP12177914 A EP 12177914A EP 2551166 B1 EP2551166 B1 EP 2551166B1
Authority
EP
European Patent Office
Prior art keywords
joint
bogie
side member
frame
frames
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.)
Not-in-force
Application number
EP12177914.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2551166A1 (en
Inventor
Renzo Gemignani
Gianluca Zanetti
Andrea Ciabatti
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.)
Ansaldobreda SpA
Original Assignee
Ansaldobreda SpA
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 Ansaldobreda SpA filed Critical Ansaldobreda SpA
Priority to PL12177914T priority Critical patent/PL2551166T3/pl
Publication of EP2551166A1 publication Critical patent/EP2551166A1/en
Application granted granted Critical
Publication of EP2551166B1 publication Critical patent/EP2551166B1/en
Priority to HRP20150032AT priority patent/HRP20150032T1/hr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B61F5/50—Other details
    • B61F5/52—Bogie frames
    • 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
    • B61F3/00—Types of bogies
    • B61F3/02—Types of bogies with more than one axle
    • B61F3/08—Types of bogies with more than one axle without driven axles or wheels
    • 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

Definitions

  • the present invention relates to a steering bogie, particularly for a tram carriage.
  • steering bogies In the field of trains and trams, it is known to use steering bogies to reduce the wear on the wheels when the latter travel along curving rails.
  • the steering can be set automatically by mechanical transmissions in response to the entering of the bogie into a curve, as in the Italian patent IT1224491 for example; or it can be set by way of actuators operated by active control electronic systems, which are provided with sensors adapted to detect the presence or the approach of a curve, as for example in U.S. patent US4982671 or in French patent FR2874883 , which corresponds to the preamble of claim 1.
  • the patent IT1224491 provides a single stage of suspension, which typically is unsatisfactory to ensure adequate comfort to passengers.
  • the solution described in the patent US4982671 comprises two stages, namely a primary suspension and a secondary suspension.
  • this solution comprises two axles supported by respective structures, which are hinged to one another by way of a central joint and are coupled by way of the primary suspension to an upper frame.
  • the upper frame is coupled by way of the secondary suspension to the carriage.
  • the axles are steered with respect to the upper frame by one or more actuators.
  • the primary suspension consists of two pairs of springs that, during steering, are deformed by the relative horizontal displacement between the upper frame and the structures that support the axles.
  • the aim of the present invention is to provide a steering bogie, particularly for a tram carriage, which allows to solve the problems outlined above in a simple and economic way.
  • a steering bogie is provided, particularly for a tram carriage, as defined by claim 1.
  • the bogie 1 comprises four wheels 2 which travel along a pair of rails (not shown) defining a path comprising curves.
  • the bogie 1 comprises an upper frame 3, in turn comprising two equal half-frames 4,5, a front one and a rear one.
  • the half-frames 4,5 are coupled to the axles 6 of the wheels 2 through a primary suspension 7, and to the body of the carriage by way of a secondary suspension (not shown), and can lightly slant relative to one another, as will be better described below.
  • the half-frames 4 and 5 comprise respective cross members 8, which are rectilinear, substantially horizontal, and orthogonal to a forward movement direction 9 coinciding with the path of the bogie 1.
  • Each half-frame 4,5 comprises a pair of arms 10, which are arranged above the cross member 8 and comprise respective vertical portions 12, fixed to the ends 11a, 11b of the cross members 8.
  • the arms 10 of each half-frame 4,5 end with respective horizontal portions 13, which are parallel to the forward movement direction 9, are connected to the corresponding portions 12 by way of intermediate curved portions 14, and extend cantilevered in the opposite direction to the portions 13 of the other half-frame 4,5.
  • the half-frames 4 and 5 have, in plan, a U-shape.
  • the secondary suspension mentioned above comprises four springs (not shown), for example, four steel helical springs, whose lower ends are supported on respective support members 16 arranged on the portions 13 and fixed to the portions 13 themselves in a manner not shown.
  • the support members 16 define respective upper seats 17 housing the lower ends of the springs of the secondary suspension.
  • the half-frames 4 and 5 are coupled to the body of the carriage also by way of respective dampers 18.
  • the ends of the dampers 18 are defined by ball joints, inferiorly coupled, to the cross members 8 and above, to the carriage body.
  • the frame 3 also comprises a side member 20 fixed to the ends 11a, and a side member 21 fixed to the ends 11b.
  • the side members 20,21 are of articulated type, in order to make the frame 3 articulated.
  • the side member 21 comprises a spherical joint 23 and a vertical axis joint 24, which are arranged near the ends of the side member 21.
  • the side member 20, instead, comprises only a ball joint 25, which is diametrically opposed to the joint 23, with respect to the center of the frame 3, and is aligned with the joint 24 in the horizontal direction orthogonal to the forward movement direction 9.
  • the joint 24 is made by the assemblage of two ball joints mutually vertically aligned.
  • the two ball joints, which form the joint 25 are bound, on the one side, to a fork 28 fixed to the end 11b of the half-frame 5 and, on the other side, to a flange 29 fixed to an intermediate portion 30 of the side member 21.
  • the pair of joints 23 and 25 define a hinge axis 31 inclined with respect to the forward movement direction 9: the half-frames 4,5 slant relative to one another about the axis 31 to help the primary suspension 7 to compensate for any momentary difference in height of a wheel 2 with respect to the others on the rails, i.e. to compensate for the so-called "uneven tracks”.
  • the side member 20 has a variable length, and together with the joints 24 and 25, renders the bogie 1 steerable.
  • length is intended the distance between the cross members 8 along a broken line defined by the axes of the components which form the side member and which are coupled one to the other in an articulated way.
  • the side member 20 comprises an intermediate element 32 of variable length, which is fixed, on the one side, to the joint 25 and, on the other side, to the end 11a of the half-frame 4, while the portion 30 of the side member 21 has a fixed length.
  • the element 32 may be a passive element, that adapts its length automatically in response to the forces that are transmitted by the rails to the wheels 2 while curving.
  • the element 32 comprises a spring (not shown) and a damper (not shown), whose damping characteristic can be possibly varied by an external control system.
  • the element 32 may be an active element, namely an actuator of hydraulic, electrical or pneumatic type, which is activated by an electronic control unit (not shown) in response to signals originating from sensors mounted on the carriage (magnetic sensors, optical sensors, etc%) or by localization systems arranged outside the carriage (for example: GPS, underground lines, etc%) and indicating information relating to the curves of the track (start and end of the curve, curvature radius, etc ).
  • the two half-frames 4,5 rotate with respect to each other about a vertical axis 33, which coincides with the axis of the joint 24, to perform a steering angle.
  • the frame 3 also comprises a Watt parallelogram 35, which connects together the cross members 8 of the half-frames 4,5.
  • the Watt parallelogram 35 comprises two longitudinal connecting rods 36, substantially parallel to the forward movement direction 9, and a transverse lever 37 arranged substantially at the center of the bogie 1.
  • the ends of the longitudinal rods 36 are coupled by way of ball joints to the arms 38 of the transverse lever 37, on one side, and to the cross members 8, on the other side.
  • the transverse lever 37 comprises a central portion 39, which defines a connection point for hinging the bogie 1 at the body of the carriage about a vertical axis 40.
  • the connection is defined by a vertical shaft (not shown) which engages the portion 39.
  • the Watt parallelogram 35 transmits the forces along the forward movement direction 9 between the frame 3 and the carriage, leaving freedom of relative movement in the other directions.
  • the four wheels 2 are coupled by way of bearings to the two axles 6, so as to rotate about respective axes 42.
  • Each axle 6 is constituted by two spindles, i.e. by two distinct coaxial shafts 43, fixed to a relative structure 44.
  • the wheels 2 are motorized and form part of respective motor-wheel groups 45, without mechanical transmissions.
  • the configuration of the motor-wheel groups 45 and the mounting thereof on the shafts 43 are similar to what is shown in the international patent application WO2008015282A1 (on behalf of the same applicant), which is herein fully incorporated for completeness of description.
  • the casing 47 and the stator of the electric motor are connected to the corresponding arm 10 by way of a connecting rod 48 substantially vertical, which transmits the reaction of the electric motor to the corresponding half-frame 4,5.
  • the ends of the connecting rod 48 define respective hinges provided with damping elements of silent-block type, whereby the casing 47 of the motor can slightly oscillate about the axis 42.
  • each structure 44 comprises a beam 50, generally referred to as "false axle”, parallel to axis 42, and fixed at the ends thereof to two supporting bodies 52 having respective holes 53 engaged by the shafts 43.
  • Each body 52 comprises a pair of plates 54, which project in opposite directions and support the lower ends of respective elastic elements 55.
  • the elastic elements 55 define the primary suspension 7 and are made, preferably, of elastomeric material.
  • the two elastic elements 55 are arranged on opposite sides of the shaft 43 and are fixed, at their upper ends, to a bracket 56, in turn fixed below the portion 13.
  • the element 32 can lengthen and shorten compared to a configuration in which the axles 6 are parallel, so as to vary the length of the side member 20, while the length of the side member 21 remains constant.
  • the side member 20 lengthens or shortens the side members 20,21 bend about respective vertical axes defined by the joints 24 and 25.
  • the Watt parallelogram 35 transmits the forces along the forward movement direction 9 independently to said relative movement and to all possible changes in shape of the frame 3 along the line.
  • the elastic elements 55 of the primary suspension 7, instead, do not undergo deformation in the horizontal direction, as there is no relative movement between the half-frames 4,5 and axles 6.
  • the articulated joint 24 allows only a rotation about a vertical axis, i.e. the axis 33, without leaving freedom of rotation about other directions: thanks to this feature, the frame 3 has a degree of constraint that maintains substantially horizontal the side members 20 and 21.
  • the bogie 1 is extremely simple compared to other solutions of the prior art, as it has a relatively small number of components.
  • the bogie 1 provides two stages of suspension, i.e. the primary suspension 7 defined by the elastic elements 55, and the secondary suspension defined by the springs (not shown) resting on the support members 16.
  • the bogie 1 can also be used along lines having curves with a relatively small curvature radius, since the springs currently in commerce for the secondary suspension are able to deform in the horizontal direction to compensate for a relative movement relatively high between the carriage body and the half-frames 4,5.
  • joints 23 and 24 could be part of the side member 20, and the joint 25 be part of the side member 21; or the joint 23 could be absent, and the joint 25 be optionally substituted by one vertical axis joint, although in this case the frame 3 does not assist the suspensions to compensate for the "uneven tracks".
  • axles 6 could be free of motors; and/or the wheels 2 could be arranged within the half-frames 4,5 (without the beams 50); and/or each axle 6 could be defined by a single shaft.
  • half-frames 4,5 may have a shape different from that indicated by way of example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Chain Conveyers (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP12177914.4A 2011-07-25 2012-07-25 Steering bogie, particularly for a tram carriage Not-in-force EP2551166B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL12177914T PL2551166T3 (pl) 2011-07-25 2012-07-25 Sterowny wózek wagonowy, zwłaszcza do wagonu tramwajowego
HRP20150032AT HRP20150032T1 (hr) 2011-07-25 2015-01-12 Upravljaäśko postolje, osobito za tramvajska kola

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000672A ITTO20110672A1 (it) 2011-07-25 2011-07-25 Carrello sterzante, in particolare per una carrozza di tram

Publications (2)

Publication Number Publication Date
EP2551166A1 EP2551166A1 (en) 2013-01-30
EP2551166B1 true EP2551166B1 (en) 2014-11-26

Family

ID=44653486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12177914.4A Not-in-force EP2551166B1 (en) 2011-07-25 2012-07-25 Steering bogie, particularly for a tram carriage

Country Status (5)

Country Link
EP (1) EP2551166B1 (es)
ES (1) ES2528468T3 (es)
HR (1) HRP20150032T1 (es)
IT (1) ITTO20110672A1 (es)
PL (1) PL2551166T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550249A (zh) * 2020-12-04 2021-03-26 中车南京浦镇车辆有限公司 胶轮列车及其制动控制系统、方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104354712A (zh) * 2014-11-06 2015-02-18 华东交通大学 一种新型的城轨转向架设计方法
RU176844U1 (ru) * 2017-06-13 2018-01-30 ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "Брянский государственный технический университет" Узел подвешивания тягового электродвигателя

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US983478A (en) * 1910-06-08 1911-02-07 Albert M Clark Railway-truck.
DE3119163C2 (de) * 1981-05-14 1984-05-17 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Luftfederdrehgestell mit radial einstellbaren Radsätzen
FR2624081A1 (fr) 1987-12-03 1989-06-09 Alsthom Vehicule a essieux orientables
IT1224491B (it) 1988-10-14 1990-10-04 Fiat Ferroviaria Savigliano Carrello autosterzante per un veicolo ferroviario
FR2874883A1 (fr) * 2004-09-07 2006-03-10 Henri Guillemaut Bogie, pour vehicules ferroviaires, a roues orientables selon la courbure des voies
EP1884433A1 (en) 2006-08-03 2008-02-06 ANSALDOBREDA S.p.A. Gearless power bogie with independent wheels for a low floor tramway vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112550249A (zh) * 2020-12-04 2021-03-26 中车南京浦镇车辆有限公司 胶轮列车及其制动控制系统、方法

Also Published As

Publication number Publication date
EP2551166A1 (en) 2013-01-30
PL2551166T3 (pl) 2015-03-31
ITTO20110672A1 (it) 2013-01-26
ES2528468T3 (es) 2015-02-10
HRP20150032T1 (hr) 2015-02-27

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