WO2009090659A1 - A safety-oriented rail car design - Google Patents
A safety-oriented rail car design Download PDFInfo
- Publication number
- WO2009090659A1 WO2009090659A1 PCT/IN2008/000027 IN2008000027W WO2009090659A1 WO 2009090659 A1 WO2009090659 A1 WO 2009090659A1 IN 2008000027 W IN2008000027 W IN 2008000027W WO 2009090659 A1 WO2009090659 A1 WO 2009090659A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crush
- car
- collision
- impact
- zone
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
- B61D15/06—Buffer cars; Arrangements or construction of railway vehicles for protecting them in case of collisions
Definitions
- This invention relates to a rail-car design, which places a premium on safety. Collisions are a reality in rail transport and circumventing these would be enabled by the design proposed in the present invention.
- Cars designed with CEM have several zones causing an accumulation of the crushing force at the ends of the cars. These crush zones are designed to crush the car by absorbing most of the force upfront, at the ends of the cars. This distribution of absorption helps in keeping the cars inline, rather than buckling laterally or vertically. Large amplitude buckling might cause more injury to passengers.
- the concept of CEM itself is not novel. During the 90s, the French and the
- KR20040037741 discloses a Safety device in getting off/on for electric rail car wherein $0 passengers are protected from accidents by means of this device, which provides a safety step to passengers.
- KR20030008900 proposes a Safety footboard for electric rail car, which also provides a similar safety feature by means of a safety step.
- MXPA05002137 proposes a Rail car door closer which controls the speeds at which the rail car doors close, in order to prevent accidents.
- JP2003276602 proposes a Damper device between car bodies for railroad vehicle wherein the lateral displacement of rail car bodies are dampened by means of this device. This could foresee its application in collision prevention or control, however, the device of this invention uses fluid mechanics to achieve its objective.
- RU2218286 discloses the Front section of a rail car comprising longitudinal beams, coupler gear holders and buffer heads.
- the section is designed to maximize the safety of the vehicle, by means of reinforced plates replete with stiffeners to provide structural robustness in the case of an accident.
- JP3197270 proposes an Attachment structure of railway car with one or more bumper fenders duplicated in a vehicle, preventing collision damage.
- the statistics of rail-car accidents are a surprisingly global one, including several incidents in India, the Hinton rail accident in Canada etc. Preventing these accidents includes ensuring that the impact due to the train colliding with any other structure, be dealt with by structural means.
- the present invention proposes a rail car designed to limit the damage due to collision with other bodies.
- the rail car of the present invention has an implicit crush zone, in the unit containing the engine of the rail car, wherein the impact of the collision is absorbed and stopped.
- This crush zone has several structural features, which provide safety to the passengers riding the rail car, including a collapsible design and a 135-degree orientation with the angle of the rail, in order to minimize damage.
- Fig. 1 shows the latitudinal profile of the unit containing the engine.
- Fig. 2 shows the side-view of the unit containing the engine.
- Fig. 3 shows the latitudinal profile of the unit, containing the engine post-crash.
- Fig. 4 illustrates the structural design of the inter-connection between all rail cars.
- Fig. 5 shows the side-view of the interconnection between rail cars, indicating where the crush- absorption zones are.
- Fig. 6 shows the side-view of the entire train, including the connection mechanism.
- Fig. 7 illustrates the direction in which the collision impact travels amongst the units containing the engines, when two trains have a head-on collision.
- Fig. 8 shows the direction in which the collision impact travels amongst the crush-zones in the interconnection structure between cars.
- Fig. 1 shows the latitudinal profile of the unit containing the engine 1, with an explicit, asymmetric crush-zone 4.
- the anterior of the unit containing the engine is at a 135- degree angle to the rail, in order to efficiently absorb shock. This layout reduces the collision impact on this and other rail cars that form the entire train.
- the crush-zone 4 of the engine will buckle, when the engine is in a collision and in severe cases, the crush- zone 4 is instrumental in derailing the engine, simultaneously deflecting the shock waves of the collision being transmitted to the rest of the train.
- Fig. 2 shows the side-view of the unit containing the engine 2 wherein the crush zone 5 mitigates the impact of a collision.
- Fig. 1 shows the latitudinal profile of the unit containing the engine 1, with an explicit, asymmetric crush-zone 4.
- the anterior of the unit containing the engine is at a 135- degree angle to the rail, in order to efficiently absorb shock. This layout reduces the collision impact on this and other rail cars that form
- FIG. 3 shows the latitudinal profile of the unit, containing the engine post-crash. As seen in this figure, the crash has its impact distributed across the points where the 45 degree 6 angled end absorbs most of the impact. The 135-degree 3 angled end also absorbs the impact, post-crash.
- Fig. 4 illustrates the structural design of the inter-connection between all rail cars.
- Fig. 5 shows the side-view of the interconnection between rail cars, indicating where the crush-absorption zones are. The crush zone is asymmetrically placed where the 135 degree 9 angled end alternates with the 45 degree 10 angled end, across subsequently placed rail-cars. The ridge along the width at the back of one car fits into the groove formed along the width of the other car.
- Fig. 6 shows the side-view of the entire train, including the connection mechanism.
- Fig. 7 illustrates the direction in which the collision impact travels amongst the units containing the engines, when two trains have a head-on collision.
- the crush-zones on the two colliding engines 11, 12 have the crush zones 13, 14 collapse and deflect away the shock waves 15, 16. Since the crush-zone has an asymmetric design with the 135 and 45-degree angles, as shown in Fig. 1, the rest of the train does not absorb the impact of the collision. This deflection 15,16 of the impact, keeps the rest of the train take in only a fraction of the entire force of collision.
- Fig. 8 shows the direction in which the collision impact travels amongst the crush-zones in the interconnection structure between cars.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IN2008/000027 WO2009090659A1 (en) | 2008-01-17 | 2008-01-17 | A safety-oriented rail car design |
US12/863,414 US20100313785A1 (en) | 2008-01-17 | 2008-01-17 | safety-oriented rail car design |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IN2008/000027 WO2009090659A1 (en) | 2008-01-17 | 2008-01-17 | A safety-oriented rail car design |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009090659A1 true WO2009090659A1 (en) | 2009-07-23 |
Family
ID=40885092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2008/000027 WO2009090659A1 (en) | 2008-01-17 | 2008-01-17 | A safety-oriented rail car design |
Country Status (2)
Country | Link |
---|---|
US (1) | US20100313785A1 (en) |
WO (1) | WO2009090659A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE257466C (en) * | ||||
DE464391C (en) * | 1928-08-08 | Henry Socoleano | Motor, rail and other vehicles with sloping head sides to the longitudinal axis | |
FR964969A (en) * | 1950-08-30 | |||
BE734626A (en) * | 1969-06-16 | 1969-12-01 |
-
2008
- 2008-01-17 US US12/863,414 patent/US20100313785A1/en not_active Abandoned
- 2008-01-17 WO PCT/IN2008/000027 patent/WO2009090659A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE257466C (en) * | ||||
DE464391C (en) * | 1928-08-08 | Henry Socoleano | Motor, rail and other vehicles with sloping head sides to the longitudinal axis | |
FR964969A (en) * | 1950-08-30 | |||
BE734626A (en) * | 1969-06-16 | 1969-12-01 |
Also Published As
Publication number | Publication date |
---|---|
US20100313785A1 (en) | 2010-12-16 |
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