EP2307254A1 - Luftfedersystem für ein schienenfahrzeug - Google Patents
Luftfedersystem für ein schienenfahrzeugInfo
- Publication number
- EP2307254A1 EP2307254A1 EP09780865A EP09780865A EP2307254A1 EP 2307254 A1 EP2307254 A1 EP 2307254A1 EP 09780865 A EP09780865 A EP 09780865A EP 09780865 A EP09780865 A EP 09780865A EP 2307254 A1 EP2307254 A1 EP 2307254A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- air
- control
- cylinder
- air spring
- 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
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
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/14—Side bearings
Definitions
- the invention relates to an air spring system for a rail vehicle with
- Austiciansem ⁇ chtung has at least a first connected to at least one of the air springs and a second connected to at least one other air spring control port,
- the suspension of a rail vehicle for passenger transport usually comprises a mechanically designed P ⁇ marfedersystem and a secondary air spring system.
- the air suspension system allows not only the additional damping but also a level control of the car body to compensate for different loads through which the air springs are pressed together to different degrees.
- the air springs are supplied via a compressed air supply system with compressed air, with the level control of the
- Air spring system sprung car body the air springs by means of the compressed air supply system can be moved in and out.
- the air spring system generally has equalization systems which can be used to exceed a pressure difference. Threshold between connected to the balancer air springs should prevent.
- the known from the prior art Austiciansem ⁇ chtept on each connected to an air spring first and second control port and two check valves comprehensive switching means. If a pressure difference threshold value is exceeded, one of the non-return valves establishes a connection between the two control connections, so that the higher-pressure air spring is vented into the other air spring with the lower pressure or, in the case of a burst air spring bellows Air spring vented through.
- the invention is based on the object of particularly reliably preventing the exceeding of a pressure difference threshold value between air springs connected to the compensation device.
- the invention solves this problem in that the compensation device has at least one outflow connected to a pressure sink and the switching means controls the control connection which is acted upon by a higher pressure in the event of a pressure drop. the same through the equalizer connect with at least one outlet.
- According to the invention is thus vented to reduce a pressure difference between air springs at least one air spring into a pressure sink and not as in the prior art by making a running through the balancing connection between the first and the second control port.
- the connection between the air spring to be vented and the pressure sink via a control port of the balancing device, the balancing device itself and the departure of the balancing device.
- At the control port which is acted upon by the smaller control pressure, however, occur no pressure changes. This results in no unnecessary interruptions of the deaeration process by the switching means as in the prior art, so that a pressure difference threshold value between the air springs is reliably avoided.
- control connections of the compensation device are connected, for example, to a plurality of air springs via a selection unit, wherein the selection unit switches on the respectively largest of the pressures provided by the air springs to the control connection.
- control connections can also be connected to only one air spring. It can be provided that the composites with the first control terminal ⁇ NEN air springs are arranged on one side of the bogie and connected to the second control terminal air springs on the opposite side of the bogie.
- the air springs can also be arranged in other ways on the rail vehicle.
- the important thing here is that too great a pressure difference between the air springs is undesirable, for example due to a hereby apparent called Schiefläge of the over the air springs cushioned car body.
- the compressed air supply system is used for compressed air control and / or regulation of the air springs, for example, to adjust the level of a car body to the height of a platform or to adjust during the journey a desired damping behavior of the air springs.
- the compensation device has switching means which can be switched by means of the pressure difference applied to the two control connections.
- switching means which can be switched by means of the pressure difference applied to the two control connections.
- Switching position changes.
- the switching process can also be effected by other or additional control parameters.
- the switching means can be designed, for example, such that they can be blocked by means of a blocking device, which prevents venting via the compensating device in a repair case.
- the pressure difference threshold value can be adjustable, for example by means of an adjustment device provided for this purpose on the compensation device.
- the pressure sink is the environment of the rail vehicle.
- the at least one outlet of the compensating device can be connected, for example, directly or via a pneumatic connecting line to the surroundings of the rail vehicle.
- the switching means are two in a cylinder movably mounted and biased by biasing means cylinder piston, which are held by the biasing means in a closed position and wherein in a pressure equalization between the first and the second control terminal causing Wegpo - Position of one of the two switching piston out of the closed position against the biasing means displaced by the compensation device hm preparefor testing.
- the cylinder pistons movably mounted in a cylinder can be switched on both sides with pressure and thus by means of a pressure difference.
- This constructed of cylinder and cylinder piston switching means has a particularly simple and robust construction. They also offer the possibility of assuming a large number of switching positions, depending on the position of the cylinder piston in the cylinder.
- a cylinder is interposed with one of the two cylinder pistons in two lines connecting the first and the second control connection, the one line piece carrying at its end a sealing seat projecting into the cylinder end, on which the cylinder piston is pressed in the closed position by the biasing means, and in the other Zylmder end the other Kausstuck mouths, wherein the cylinder piston, the cylinder in pneumatically separated sub-divided areas and in the sealing area of the cylinder area a mouthpiece connected to a pressure sink line.
- the two cylinder pistons are thus arranged in opposite directions, so that a control port on the one hand via a sealed with a sealing fit line pressure against the biasing force on an end face of a cylinder piston and prints over the other line in the same direction as the biasing force on a rear side of the other cylinder piston acts.
- a pressure difference between the first and the second control terminal which exceeds the biasing force of the biasing means, the one of the two cylinder piston is withdrawn from the sealing seat and releases a connection between the outlet and the control ⁇ connection with the higher pressure.
- the biasing means is a spring.
- the spring may be, for example, a coil spring.
- biasing force acting on the cylinder pistons by the biasing means is adjustable.
- the biasing force can be manually adjusted at the compensation device.
- a spring as a biasing means, for example, by shifting position of a spring-supporting abutment. This allows a one ⁇ put the pressure difference threshold.
- FIG. 1 shows a plan view and a schematic representation of a rail vehicle with an air spring system according to the prior art
- Figure 2 in plan view and schematic representation of a first exemplary embodiment of a rail vehicle with a erfmdungsgedorfen air spring system
- FIG. 3 is a schematic sectional view of an exemplary embodiment of an inventive compensating device
- Em car body 3 of the rail vehicle is mounted on two bogies 2, wherein the bogies each have two wheel axles 4 and between the wheel axles 4 on each of the two sides of the rail vehicle two Heilfe- 5 have.
- the air springs are on the one hand on the bogie 2 and extend up to the Wagenkas ⁇ th 3.
- Each of the air springs 5 is connected via a pneumatic line 6a with an associated air spring valve 7 in conjunction, each air spring valve 7 via a pneumatic see line 6b with a common compressed air source 8 is in communication.
- the air springs 5 are supplied via the compressed air supply system 7, 8, 6a, 6b with compressed air.
- the pressure is regulated by venting or venting the air springs via the associated air spring valve 7, for which purpose a control and / or regulating system, not shown, controls the air spring valves 7 connected to the compressed air source 8.
- a pressure difference between air springs can lead to a sliding surface of the car body 3 or to a torsion of the car body 3.
- the pressure difference can be controlled by regulating the air spring valves 7 or be caused by a defective air spring valve 7 or caused by leakage in one of the air springs 5.
- the at least one Aus stressessein ⁇ chtung 12 is arranged to reduce such safety-critical pressure differences.
- the pressure reduction takes place in a period of time, which is influenced by a variety of parameters such as the size of the leakage and / or the
- FIG. 2 shows a rail vehicle 15 with an inventive air spring system according to a first Ausbowungsbeispiels from a bird's eye view in a schematic representation.
- the rail vehicle 15 differs from the rail vehicle 1 of FIG. 1 by a compensation device 16 with a structure which is different from the compensation device 12 of FIG.
- the compensation device 16 like the compensation device 12 of FIG. 1, is provided with a first control connection 17a with an air spring 5 and with a second control connection 17a Control terminal 17b connected to another air spring 5 and also has switching means 19 which are switchable by means of the applied to the two control terminals 17a, 17b pressure difference.
- the compensation device 16 has two connected to a pressure sink 20 expander 18a, 18b and the switching means 19 are designed such that to reduce a pressure difference threshold crossing pressure difference, the switching means the acted upon by a higher pressure control port 17a, 17b connect through the compensation device 16 with one of the outlets 18a, 18b.
- FIG. 3 shows a schematic sectional view of an exemplary embodiment of a compensating device 16 'according to the invention.
- the compensation device 16 ' has a first control connection 17a and a second control connection 17b and two connection lines 21a, 21b connecting the two control connections and passing through the compensation device.
- connection lines 21a In the connecting lines 21a,
- the connecting line 21a extends from the control port 17a up to the cylinder 22a, the line stich 21a reaching up to its end carrying a cylinder end projecting sealing seat 25a, on which the cylinder piston 23a in the closing position through the Spring 24a is pressed. Starting from the opposite cylinder end, the remaining half of the connecting line 21a extends to the second control port 17b.
- FIG. 4 shows a schematic sectional illustration of the compensating device 16 'shown in FIG. 3 in another switching position.
- the cylinder pistons 23a, 23b are in a switching position effecting a pressure equalization between the first 17a and the second control connection 17b.
- the cylindrical piston 23a has withdrawn from the sealing seat 25a by means of a control pressure applied to the control port 17a and releases a pneumatic connection between the first control port 17a and the outlet 18a.
- the control pressure applied to the control port 17a must be greater than the sum of the biasing force divided by the seal seat surface and the control pressure applied to the second control port 17b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL09780865T PL2307254T3 (pl) | 2008-07-30 | 2009-07-21 | Układ zawieszenia pneumatycznego do pojazdu szynowego |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008035563.1A DE102008035563B4 (de) | 2008-07-30 | 2008-07-30 | Luftfedersystem für ein Schienenfahrzeug |
| PCT/EP2009/059343 WO2010012628A1 (de) | 2008-07-30 | 2009-07-21 | Luftfedersystem für ein schienenfahrzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2307254A1 true EP2307254A1 (de) | 2011-04-13 |
| EP2307254B1 EP2307254B1 (de) | 2018-02-21 |
Family
ID=41268498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09780865.3A Active EP2307254B1 (de) | 2008-07-30 | 2009-07-21 | Luftfedersystem für ein schienenfahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2307254B1 (de) |
| DE (1) | DE102008035563B4 (de) |
| PL (1) | PL2307254T3 (de) |
| WO (1) | WO2010012628A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1402175B1 (it) * | 2010-09-03 | 2013-08-28 | Ansaldobreda Spa | Vettura ferroviaria |
| AT520634B1 (de) * | 2018-02-08 | 2019-06-15 | Siemens Ag Oesterreich | Luftfedersteuerungseinrichtung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2203337A5 (de) * | 1972-10-13 | 1974-05-10 | Sncf | |
| EP0099597B1 (de) * | 1982-07-23 | 1985-12-11 | Werkzeugmaschinenfabrik Oerlikon-Bührle AG | Pneumatische Steuereinrichtung |
| DE3433691A1 (de) | 1984-09-13 | 1986-03-20 | Knorr-Bremse GmbH, 8000 München | Gasfederung fuer fahrzeuge, insbesondere fuer schienenfahrzeuge |
| FR2689475A1 (fr) * | 1992-04-01 | 1993-10-08 | Faiveley Transport | Suspension transversale pour véhicule ferroviaire. |
| DE69926724T2 (de) * | 1999-03-19 | 2006-05-18 | Kayaba Kogyo K.K. | Roll-Dämpfer für ein Schienenfahrzeug und Dämpfungsverfahren |
-
2008
- 2008-07-30 DE DE102008035563.1A patent/DE102008035563B4/de not_active Expired - Fee Related
-
2009
- 2009-07-21 WO PCT/EP2009/059343 patent/WO2010012628A1/de not_active Ceased
- 2009-07-21 PL PL09780865T patent/PL2307254T3/pl unknown
- 2009-07-21 EP EP09780865.3A patent/EP2307254B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010012628A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008035563B4 (de) | 2016-01-07 |
| WO2010012628A1 (de) | 2010-02-04 |
| EP2307254B1 (de) | 2018-02-21 |
| DE102008035563A1 (de) | 2010-06-02 |
| PL2307254T3 (pl) | 2018-07-31 |
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