Rail vehicle, particularly a tram comprising a bumper
It is described a rail vehicle, in particular a tram comprising a front portion and a bumper. Preferably, the bumper comprises at least a thermoplastic material comprising PPS, more preferably the bumper comprises more than 50%, even more preferably more than 80% by weight on the total weight of the thermoplastic materials present in the bumper in a thermoplastic PPS-based material. Preferably, the thermoplastic material comprises reinforcement fibres, more preferably glass fibres.
1. A rail vehicle ( 10 ) comprising a bumper ( 11 ) comprising PPS and a front portion ( 11 ) comprising a projecting end line ( 13 ) through which a vertical plane ( 16 ) passes that is perpendicular to a rail plane R and a bumper ( 12 ) extending for a height H between an upper horizontal end plane B 1 passing through the highest point of the bumper ( 12 ) and a lower horizontal end plane B 2 passing through the lowest point of the bumper, characterized in that said bumper 12 comprises at least an upper area ( 12 a ) extending for a height H 1 and comprising a front surface ( 15 ) comprised between a vertical plane ( 16 ) and an inclined plane ( 17 ); said vertical plane passing through an axis A passing from said projecting end, and in that said height H 1 is equal to at least 30% of said height H of said bumper ( 12 ) and in that the angle between said vertical plane ( 16 ) and said inclined plane ( 17 ) is less than 5°.
2. A rail vehicle ( 10 ) according to claim 1 , characterized in that said bumper ( 12 ) comprises more than 50% in weight of the total weight of the thermoplastic materials present in the bumper ( 12 ) in a PPS-based thermoplastic material.
3. A rail vehicle ( 10 ) according to claim 1 , characterized in that said bumper ( 12 ) comprises more than 80% in weight of the total weight of the thermoplastic materials present in the bumper ( 12 ) in a PPS-based thermoplastic material.
4. A rail vehicle ( 10 ) according to claim 1 , characterized in that said bumper ( 12 ) comprises PPS as only thermoplastic material.
5. A rail vehicle ( 10 ) according to claim 1 , characterized in that said bumper ( 12 ) comprises reinforcing fibres.
6. A rail vehicle ( 10 ) according to claim 5 , characterized in that said reinforcing fibres comprise at least a substance selected from the group comprising fibreglass, carbon fibres, PBO fibres.
7. A rail vehicle ( 10 ) according to claim 5 , characterized in that said reinforcing fibres are fibreglass.
8. A rail vehicle ( 10 ) according to claim 5 , characterized in that said reinforcing fibres are added in a percentage of weight comprised between 1 and 50% with respect to the total weight of the thermoplastics.
9. A rail vehicle ( 10 ) according to claim 5 , characterized in that said bumper ( 12 ) has an average thickness comprised between 0.1 and 0.6 mm.