EP2886412A1 - Connection system of wheelsets in self-steering railway bogie - Google Patents

Connection system of wheelsets in self-steering railway bogie Download PDF

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Publication number
EP2886412A1
EP2886412A1 EP14460069.9A EP14460069A EP2886412A1 EP 2886412 A1 EP2886412 A1 EP 2886412A1 EP 14460069 A EP14460069 A EP 14460069A EP 2886412 A1 EP2886412 A1 EP 2886412A1
Authority
EP
European Patent Office
Prior art keywords
wheelsets
whiskers
railway bogie
cleat
central strip
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.)
Granted
Application number
EP14460069.9A
Other languages
German (de)
French (fr)
Other versions
EP2886412B1 (en
Inventor
Jerzy Piotrowski
Jan Matej
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.)
Wagony Swidnica Sp Z OO
Original Assignee
Politechnika Warszawska
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.)
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Publication date
Application filed by Politechnika Warszawska filed Critical Politechnika Warszawska
Priority to HRP20221541TT priority Critical patent/HRP20221541T1/en
Publication of EP2886412A1 publication Critical patent/EP2886412A1/en
Application granted granted Critical
Publication of EP2886412B1 publication Critical patent/EP2886412B1/en
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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
    • B61F5/38—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 subject of the invention is a connection system of wheelsets in a self-steering railway bogie, designated for self-adjusting wheelsets of railway bogie, which makes it possible to reduce the wheel wear during running on a curved track and to achieve stable running of the vehicle at high speeds.
  • a solution of an elastic system for connection of wheelsets in a self-steering railway bogie is known from the patent description US 6439130 . That solution applies arms attached to bearing housings of wheelset axles, each of the arms parallel to the longitudinal axis of the railway bogie and directed towards the centre of the railway bogie.
  • the arms at a given side of the railway bogie, on the left and on the right, are connected with one another using an assembly containing many elements such as preloaded coil springs, flat springs, limiters, ball-and-socket joints, bolts, pins, screws, nuts and their protections, constituting a complex elastic apparatus.
  • a disadvantage of that solution is the high cost of manufacturing of the elastic apparatus, complex adjustment, and operational reliability threatened by the high number of complex elements of the apparatus.
  • the purpose of the invention is to eliminate these disadvantages with a connection system of wheelsets of a new construction in self-steering railway bogies, making it possible to reduce the wheel wear and to achieve a stable running of the vehicle at high speeds by providing a sufficiently high stiffness to counteract the parallel anti-symmetric relative displacements of wheelsets in the horizontal plane, called the substitute shear stiffness of the system, while providing a low stiffness counteracting the symmetric angular displacements of wheelsets in the horizontal plane, called the substitute bending stiffness of the system.
  • a connection system of wheelsets in a self-steering railway bogie consisting of elastic elements parallel to the longitudinal axis of the railway bogie, connected with arms of wheelsets on the left and the right side of the railway bogie, according to the invention is characterized in that each elastic element is made of a single sheet of elastic material with two parallel longitudinal side cuts separating the side strips constituting whiskers from the longer central strip, where the ends of the whiskers are permanently connected with a rigid cleat, the central strip has a fragment bent in the shape of a channel section, located between the whiskers and the cleat, and the flat end of the central strip, passing under the cleat, is attached to the arm of the adjacent wheelset.
  • the system according to the invention has a simple structure with no moving parts, where the elastic element is made of a single sheet of material, and obtaining the required stiffness depends on the choice of dimensions of the elastic element.
  • fig. 1 presents the connection system of wheelsets in the railway bogie in a top view
  • fig. 2 presents the elastic element attached to the arms of the wheelsets
  • fig. 3 presents the elastic element before being shaped from a sheet of elastic material.
  • the wheelsets 4 are connected on the left and the right side of the bogie with elastic elements located in parallel to the longitudinal axis of the railway bogie.
  • Each elastic element is made of a single sheet of elastic material, whose prepared fragment is shown in unfurled view in fig. 3 .
  • This fragment has whiskers 1b on its sides, in the form of short strips separated with parallel longitudinal cuts from the longer central strip 1a.
  • the ends of whiskers 1b are permanently connected with a rigid cleat 2. Bending of the central strip 1a along four lateral dashed lines, shown in fig. 3 , leads to creating a strip fragment in the shape of a channel section, located between the whiskers 1b and the cleat 2.
  • the first bend runs along the dashed line connecting the bases of the whiskers 1b.
  • the last bend is made in the plane of whiskers 1b.
  • the flat end of the central strip 1a, passing under cleat 2 is attached to the arm 3 of the adjacent wheelset 4, and the arms 3 are attached to saddle protrusions of the bearing housings 5 of each wheelset 4.
  • the arms 3 and the horizontal fragments of the elastic element are subject to bending in the horizontal plane and the vertical walls of the fragment in the shape of a channel section are being twisted.
  • the wheelsets are subject to symmetric angular displacements in the horizontal plane relative to the lateral axis of the bogie, the vertical walls of the fragment in the shape of a channel section are subject to twisting and bending in the vertical plane and the horizontal wall of that fragment is being bent in the horizontal plane.
  • the arms 3 and the remaining horizontal fragments of the elastic element are also being bent.
  • the required substitute bending stiffness of the connection system can be achieved by adequate choice of dimensions of the elements of the elastic element.
  • connection system of wheelsets in a self-steering railway bogie is particularly suitable for application in self-steering railway bogies in which the space between the axles of the wheelsets is not available for installation of another connection system of wheelsets, for example in the form of crossed rods or yokes connected with one another using a rubber element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Springs (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

The system comprises elastic elements parallel to the longitudinal axis of the railway bogie, connected with arms (3) of wheelsets (4) on the left and the right side of the railway bogie. The each elastic element is made of a single sheet of elastic material with two parallel longitudinal side cuts separating the side strips constituting whiskers (1b) from the longer central strip (1a), where the ends of the whiskers (1b) are permanently connected with a rigid cleat (2), the central strip (1a) has a fragment bent in the shape of a channel section, located between the whiskers (1b) and the cleat (2), and the flat end of the central strip (1b), passing under the cleat (2), is attached to the arm (3) of the adjacent wheelset (4).

Description

  • The subject of the invention is a connection system of wheelsets in a self-steering railway bogie, designated for self-adjusting wheelsets of railway bogie, which makes it possible to reduce the wheel wear during running on a curved track and to achieve stable running of the vehicle at high speeds.
  • A solution of an elastic system for connection of wheelsets in a self-steering railway bogie is known from the patent description US 6439130 . That solution applies arms attached to bearing housings of wheelset axles, each of the arms parallel to the longitudinal axis of the railway bogie and directed towards the centre of the railway bogie. The arms at a given side of the railway bogie, on the left and on the right, are connected with one another using an assembly containing many elements such as preloaded coil springs, flat springs, limiters, ball-and-socket joints, bolts, pins, screws, nuts and their protections, constituting a complex elastic apparatus. A disadvantage of that solution is the high cost of manufacturing of the elastic apparatus, complex adjustment, and operational reliability threatened by the high number of complex elements of the apparatus.
  • The purpose of the invention is to eliminate these disadvantages with a connection system of wheelsets of a new construction in self-steering railway bogies, making it possible to reduce the wheel wear and to achieve a stable running of the vehicle at high speeds by providing a sufficiently high stiffness to counteract the parallel anti-symmetric relative displacements of wheelsets in the horizontal plane, called the substitute shear stiffness of the system, while providing a low stiffness counteracting the symmetric angular displacements of wheelsets in the horizontal plane, called the substitute bending stiffness of the system.
  • A connection system of wheelsets in a self-steering railway bogie, consisting of elastic elements parallel to the longitudinal axis of the railway bogie, connected with arms of wheelsets on the left and the right side of the railway bogie, according to the invention is characterized in that each elastic element is made of a single sheet of elastic material with two parallel longitudinal side cuts separating the side strips constituting whiskers from the longer central strip, where the ends of the whiskers are permanently connected with a rigid cleat, the central strip has a fragment bent in the shape of a channel section, located between the whiskers and the cleat, and the flat end of the central strip, passing under the cleat, is attached to the arm of the adjacent wheelset.
  • The system according to the invention has a simple structure with no moving parts, where the elastic element is made of a single sheet of material, and obtaining the required stiffness depends on the choice of dimensions of the elastic element.
  • An example of implementation of the subject matter of the invention is presented in the drawing, where fig. 1 presents the connection system of wheelsets in the railway bogie in a top view, fig. 2 presents the elastic element attached to the arms of the wheelsets, and fig. 3 presents the elastic element before being shaped from a sheet of elastic material.
  • As presented in fig. 1, 2, the wheelsets 4 are connected on the left and the right side of the bogie with elastic elements located in parallel to the longitudinal axis of the railway bogie. Each elastic element is made of a single sheet of elastic material, whose prepared fragment is shown in unfurled view in fig. 3. This fragment has whiskers 1b on its sides, in the form of short strips separated with parallel longitudinal cuts from the longer central strip 1a. The ends of whiskers 1b are permanently connected with a rigid cleat 2. Bending of the central strip 1a along four lateral dashed lines, shown in fig. 3, leads to creating a strip fragment in the shape of a channel section, located between the whiskers 1b and the cleat 2. The first bend runs along the dashed line connecting the bases of the whiskers 1b. The last bend is made in the plane of whiskers 1b. The flat end of the central strip 1a, passing under cleat 2, is attached to the arm 3 of the adjacent wheelset 4, and the arms 3 are attached to saddle protrusions of the bearing housings 5 of each wheelset 4.
  • When wheelsets 4 displace in parallel to one another and perpendicularly to the track axis, the arms 3 and the horizontal fragments of the elastic element are subject to bending in the horizontal plane and the vertical walls of the fragment in the shape of a channel section are being twisted. When the wheelsets are subject to symmetric angular displacements in the horizontal plane relative to the lateral axis of the bogie, the vertical walls of the fragment in the shape of a channel section are subject to twisting and bending in the vertical plane and the horizontal wall of that fragment is being bent in the horizontal plane. The arms 3 and the remaining horizontal fragments of the elastic element are also being bent. The required substitute bending stiffness of the connection system can be achieved by adequate choice of dimensions of the elements of the elastic element.
  • The connection system of wheelsets in a self-steering railway bogie according to the invention is particularly suitable for application in self-steering railway bogies in which the space between the axles of the wheelsets is not available for installation of another connection system of wheelsets, for example in the form of crossed rods or yokes connected with one another using a rubber element.

Claims (1)

  1. connection system of wheelsets in a self-steering railway bogie having elastic elements parallel to the longitudinal axis of the railway bogie, connected with arms of wheelsets on the left and the right side of the railway bogie, characterized in that each elastic element is made of a single sheet of elastic material with two parallel longitudinal side cuts separating the side strips constituting whiskers (1b) from the longer central strip (1a), where the ends of the whiskers (1b) are permanently connected with a rigid cleat (2), the central strip (1a) has a fragment bent in the shape of a channel section, located between the whiskers (1b) and the cleat (2), and the flat end of the central strip (1b), passing under the cleat (2), is attached to the arm (3) of the adjacent wheelset (4).
EP14460069.9A 2013-10-15 2014-10-14 Connection system of wheelsets in self-steering railway bogie Active EP2886412B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20221541TT HRP20221541T1 (en) 2013-10-15 2014-10-14 Connection system of wheelsets in self-steering railway bogie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL405653A PL224900B1 (en) 2013-10-15 2013-10-15 System of wheel sets linkage of the course-keeping carriage

Publications (2)

Publication Number Publication Date
EP2886412A1 true EP2886412A1 (en) 2015-06-24
EP2886412B1 EP2886412B1 (en) 2022-09-28

Family

ID=51897221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14460069.9A Active EP2886412B1 (en) 2013-10-15 2014-10-14 Connection system of wheelsets in self-steering railway bogie

Country Status (3)

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EP (1) EP2886412B1 (en)
HR (1) HRP20221541T1 (en)
PL (1) PL224900B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11623668B2 (en) 2019-03-14 2023-04-11 Transportation Ip Holdings, Llc Methods and systems for a vehicle truck yaw separator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH225097A (en) * 1941-11-17 1942-12-31 Schweizerische Lokomotiv Multi-axle articulated chassis for rail vehicles.
EP0557892A2 (en) * 1992-02-24 1993-09-01 FIAT FERROVIARIA S.p.A. A motorized bogie for a rail vehicle
DE4240098A1 (en) * 1992-11-28 1994-06-01 Krupp Verkehrstechnik Gmbh Running gear for rail vehicles
EP0803426A1 (en) * 1996-04-27 1997-10-29 Waagner-Biro Aktiengesellschaft Running gear, especially bogie
US6439130B1 (en) 1998-08-06 2002-08-27 Herbert Scheffel Self-steering bogies

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH225097A (en) * 1941-11-17 1942-12-31 Schweizerische Lokomotiv Multi-axle articulated chassis for rail vehicles.
EP0557892A2 (en) * 1992-02-24 1993-09-01 FIAT FERROVIARIA S.p.A. A motorized bogie for a rail vehicle
DE4240098A1 (en) * 1992-11-28 1994-06-01 Krupp Verkehrstechnik Gmbh Running gear for rail vehicles
EP0803426A1 (en) * 1996-04-27 1997-10-29 Waagner-Biro Aktiengesellschaft Running gear, especially bogie
US6439130B1 (en) 1998-08-06 2002-08-27 Herbert Scheffel Self-steering bogies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11623668B2 (en) 2019-03-14 2023-04-11 Transportation Ip Holdings, Llc Methods and systems for a vehicle truck yaw separator

Also Published As

Publication number Publication date
PL224900B1 (en) 2017-02-28
PL405653A1 (en) 2015-04-27
HRP20221541T1 (en) 2023-04-28
EP2886412B1 (en) 2022-09-28

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