EP2152559A1 - Suspension for a rail vehicle - Google Patents
Suspension for a rail vehicleInfo
- Publication number
- EP2152559A1 EP2152559A1 EP08762337A EP08762337A EP2152559A1 EP 2152559 A1 EP2152559 A1 EP 2152559A1 EP 08762337 A EP08762337 A EP 08762337A EP 08762337 A EP08762337 A EP 08762337A EP 2152559 A1 EP2152559 A1 EP 2152559A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suspension
- wedge
- face
- load
- vertical
- 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
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
-
- 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
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/308—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating damping devices
Definitions
- This invention relates to a suspension for a rail vehicle.
- suspensions for rail vehicles for the main body of the vehicle to be suspended on a multi-axle bogie or a single axle bogie using suspensions which include a top pedestal supported by suspension springs which are in turn supported by an axle box attached to a wheel set by a bearing.
- these include multiple long travel springs and have so called floating wedge friction damping.
- the friction damping is brought about by a fixed plate transmitting load to an inclined face of the wedge such that the vertical face of the wedge, having a composite liner, is forced against a respective vertical face of the axle box or saddle, on either side of the wheel/bearing centre line. This action results in a horizontal damping force acting towards the centre line, which produces resistive forces against lateral and vertical acceleration of the wheel set in the Y and Z planes respectively due to the frictional engagement of the vertical faces.
- the present invention consists in a suspension for a rail vehicle including at least one spring carrying a wedge constrained to move in the vertical direction and a load application member for engaging the wedge to transmit load to the wedge along a direction characterised in that the damping ratio of the suspension is variable by altering the engagement between the member and the wedge and hence the direction.
- one of the member or wedge may have a generally flat engagement face and the other may have a non-planar face whereby the flat face can pivot on the non-planar face to alter the direction.
- the member is pivotally mounted and further includes a resilient element for urging the member against the wedge.
- the resilient element is rated to be fully compressed at the design maximum load of the vehicle.
- the resilient member is sufficiently strong to maintain the plate in a first pivoted position, when the vehicle is unladen or at tare weight, and to be fully compressed when the vehicle is in at least a substantially loaded state.
- the suspension can provide a first damping ratio which is suitable for tare running and a second damping ratio which is suitable for laden running, but more sophisticated arrangements can be envisaged, for example the resilient element could be replaced by an hydraulic ram, which altered the angle of the plate either under manual control or automatically in response to a detected load in the vehicle.
- the direction is substantially 30° " to horizontal and in another state the direction is substantially at 40° to the horizontal.
- Figure 1 a is a vertical view of a bogie set for tare running; and Figure 1 b is the equivalent view of the left hand side of the bogie of
- a bogie 10 includes a top pedestal 11 , that supports the body, for example, of a railway wagon (not shown), an axle box 12 which is attached to a wheel set 13 by a bearing 14, and a suspension system, generally indicated at 15 acting between the pedestal 11 and the axle box 12.
- the suspension 15 includes two upper load bearing springs 16 mounted on respective sides of a centre line 17 and a pair of damping spring sets 18, which are also mounted on respective sides of the centre line 17.
- Each spring sets 18 includes coaxial springs 19 which together support a wedge element 20 that is constrained to travel vertically by the engagement of its face 21 with the vertical face 22 on the axle box 12. Up to this point the design is entirely conventional.
- a pivoted plate 24 is provided instead of the pedestal 11 having a fixed inclined face for engaging the upper surface 23 of the wedge element 20.
- the plate 24 can pivot towards and away from the pedestal 11.
- the face 23 is domed, rather than flat as in the conventional design, so that as the plate 24 pivots, it can be readily aligned on the surface 23 to vary the line of action of the force transmitted through the plate 24 into the wedge element 20. It will be understood that by changing the angle of that line of action, the magnitude of the horizontal component of that force is also changed with the result that the friction or damping force generated between the faces 21 and 22 is altered. As this force is one of the components of the damping ratio, the net result is to change the damping ratio.
- a further spring 25 is provided to act between the pedestal 11 and the plate 24 in a sense to urge the plate away from the pedestal 11 and against the wedge 20.
- a suitable spring 25 it is possible to arrange for it to be in its extended position as show in Figure 1A when the respective vehicle is in its tare condition, but the spring 25 is fully compressed (see Figure 1 b) in the laden condition of the vehicle.
- this changes the angle of the face of the plate 24 from 40° in the tare condition to 30° in the laden position.
- the line of action or direction of transmitted load is therefore varied between 10° to the horizontal and 60° to the horizontal, with the resultant change on the resolved components of the applied load, as mentioned above.
- This construction provides a particularly suitable arrangement for freight vehicles in that it acts essentially in a flip flop manner with the plate either being in its Figure 1a or Figure 1b condition.
- the spring may be chosen for progressive compression, or a combination of springs may be used or, as is mentioned above, some positive actuator, such as a hydraulic ram could be used, but obviously that would be a more expensive approach.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US93434407P | 2007-06-13 | 2007-06-13 | |
GBGB0711383.0A GB0711383D0 (en) | 2007-06-13 | 2007-06-13 | Suspension for a rail vehicle |
PCT/GB2008/002002 WO2008152383A1 (en) | 2007-06-13 | 2008-06-12 | Suspension for a rail vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2152559A1 true EP2152559A1 (en) | 2010-02-17 |
EP2152559B1 EP2152559B1 (en) | 2013-05-15 |
Family
ID=38332005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08762337.7A Active EP2152559B1 (en) | 2007-06-13 | 2008-06-12 | Suspension for a rail vehicle |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100162919A1 (en) |
EP (1) | EP2152559B1 (en) |
AU (1) | AU2008263623A1 (en) |
CA (1) | CA2689697A1 (en) |
GB (1) | GB0711383D0 (en) |
WO (1) | WO2008152383A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101844567B (en) * | 2010-04-27 | 2011-11-09 | 南车长江车辆有限公司 | Large-diamond resistant rigidity railway truck steering frame |
CN101830233B (en) * | 2010-05-14 | 2011-11-09 | 南车长江车辆有限公司 | Full side bearing bearing-type railway truck bogie |
CN102476642A (en) * | 2010-11-22 | 2012-05-30 | 齐齐哈尔轨道交通装备有限责任公司 | Railway vehicle steering frame and railway vehicle |
US9114814B2 (en) * | 2012-10-17 | 2015-08-25 | Nevis Industries Llc | Split wedge and method for making same |
RU2551870C1 (en) * | 2014-03-18 | 2015-05-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Елецкий государственный университет им. И.А. Бунина" | Locomotive pedestal bogie |
EP3131801A1 (en) * | 2014-04-16 | 2017-02-22 | Wabtec Rail Scotland Limited | Suspension module for a rail vehicle |
AT516584A1 (en) * | 2014-11-27 | 2016-06-15 | Siemens Ag Oesterreich | Spring cup for a primary suspension of a rail vehicle |
EP3045374B1 (en) * | 2015-01-19 | 2020-02-26 | VR-Yhtymä Oy | Weighing arrangement |
EP3045373B1 (en) * | 2015-01-19 | 2020-03-04 | VR-Yhtymä Oy | Friction damper supported by a joint |
GB2556252B (en) * | 2015-06-15 | 2020-10-14 | Volvo Constr Equip Ab | Suspension arrangement |
CN112849190A (en) * | 2021-03-29 | 2021-05-28 | 中车齐齐哈尔车辆有限公司 | Axle box suspension device and bogie |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2352693A (en) * | 1941-06-07 | 1944-07-04 | Arthur C Davidson | Railway truck |
US2422638A (en) * | 1944-09-18 | 1947-06-17 | James R Cardwell | Stabilizing mechanism for railway trucks and the like |
US2723630A (en) * | 1950-02-08 | 1955-11-15 | Buckeye Steel Castings Co | Damping device for railway car trucks |
US3079873A (en) * | 1960-02-29 | 1963-03-05 | Amsted Ind Inc | Universal side frame for snubbed railway car trucks |
US3261305A (en) * | 1961-11-02 | 1966-07-19 | Midland Ross Corp | Snubbed railway car truck |
US3218990A (en) * | 1962-11-13 | 1965-11-23 | Midland Ross Corp | Car truck side frame with snubbing means |
US3254613A (en) * | 1963-03-05 | 1966-06-07 | Midland Ross Corp | Car truck |
US3575117A (en) * | 1968-06-12 | 1971-04-13 | Amsted Ind Inc | Railway truck bolster snubber |
BE754299A (en) * | 1969-08-04 | 1971-01-18 | Midland Ross Corp | RAILWAY WAGON BOGGIE |
US3977332A (en) * | 1975-06-25 | 1976-08-31 | Standard Car Truck Company | Variably damped truck |
US4357880A (en) * | 1980-08-25 | 1982-11-09 | Midland-Ross Corporation | Bolster for a railroad car truck |
US4574708A (en) * | 1984-01-03 | 1986-03-11 | Buckeye International, Inc. | Damping mechanism for a truck assembly |
DE4204783C2 (en) * | 1992-02-18 | 2001-03-01 | Dwa Deutsche Waggonbau Gmbh | Running gear for rail vehicles |
US5511489A (en) * | 1994-05-17 | 1996-04-30 | Standard Car Truck Company | Dual face friction wedge |
US5524551A (en) * | 1994-08-23 | 1996-06-11 | Amsted Industries Incorporated | Spring-pack assembly for a railway truck bolster assembly |
US6269752B1 (en) * | 1999-05-06 | 2001-08-07 | Standard Car Truck Company | Friction wedge design optimized for high warp friction moment and low damping force |
US20020092440A1 (en) * | 2000-09-11 | 2002-07-18 | Paul Hewitt | Railcar Truck |
US6425334B1 (en) * | 2000-12-20 | 2002-07-30 | Amsted Industries Incorporated | Friction shoe for freight car truck |
US7004079B2 (en) * | 2001-08-01 | 2006-02-28 | National Steel Car Limited | Rail road car and truck therefor |
US6895866B2 (en) * | 2001-08-01 | 2005-05-24 | National Steel Car Limited | Rail road freight car with damped suspension |
CA2469116C (en) * | 2003-06-25 | 2009-08-18 | Asf-Keystone, Inc. | Three-piece motion control truck system |
GB0500236D0 (en) * | 2005-01-07 | 2005-02-16 | Wagon Rail Interface Technolog | Railway bogies |
US8104409B2 (en) * | 2008-08-19 | 2012-01-31 | Bradken Resources Pty Limited | Rail car suspension damping |
-
2007
- 2007-06-13 GB GBGB0711383.0A patent/GB0711383D0/en not_active Ceased
-
2008
- 2008-06-12 EP EP08762337.7A patent/EP2152559B1/en active Active
- 2008-06-12 CA CA2689697A patent/CA2689697A1/en not_active Abandoned
- 2008-06-12 WO PCT/GB2008/002002 patent/WO2008152383A1/en active Application Filing
- 2008-06-12 AU AU2008263623A patent/AU2008263623A1/en not_active Abandoned
- 2008-06-12 US US12/602,801 patent/US20100162919A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2008152383A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2152559B1 (en) | 2013-05-15 |
GB0711383D0 (en) | 2007-07-25 |
WO2008152383A1 (en) | 2008-12-18 |
CA2689697A1 (en) | 2008-12-18 |
AU2008263623A1 (en) | 2008-12-18 |
US20100162919A1 (en) | 2010-07-01 |
WO2008152383A8 (en) | 2010-01-14 |
AU2008263623A8 (en) | 2010-02-18 |
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