The present patent of industrial invention concerns a road
trailer qualified with one or two or three axles), transporting goods of different
nature setting up (like ordinary flat wagon or refrigerated wagon or covered van
or tank wagon etc) equipped with a hydraulic or mechanic system that is able to
block two railway bogies at the ends of frame so that on the whole the vehicle becomes
a railway wagon qualified to run on the railway without restrictions and to be put
in marshalling of a goods train without restrictions.
The change from road trailer and railway wagon can be made
without the use of external machines of lifting. It is possible so to do the transport
door to door in an economic and simple way
Actually road holds the biggest per cent of goods traffic
because is able to make the transport door to door.
To shift a quantity of goods transport from road to railway
and to do the transport door to door actually we can use the intermodal system that
needs big investment and equipments very expensive so that the system is justified
only if the quantity of goods in each terminal is very high.
Another system used to realize the door to door transport
is to use trailers supported on railway bogies but every bogie support the ends
of two trailer so that the composition of train is blocked and every damage during
the running is very complex to solve because it is impossible to withdraw a single
Another typology of bimodal vehicle, studied to solve the
problem of blocked train is a vehicle equipped with road axles and with buffing
and draw gears. A mechanic system is able to move the buffing and draw gears so
that in road version the buffing and draw gears are completely gone back in frame.
On the contrary, in railway version, the mechanic system
moves the buffing and draw gears out of the frame so that the vehicle can be put
in the marshalling of a goods train.
This type of bimodal vehicle has the following drawbacks:
- The long time necessary to move the buffing and draw gears;
- The cost of mechanic system to move the buffing and draw gears
- In road version , the weight of buffing and draw gears reduces the useful weight
of vehicle that is not competitive with normal trailers.
To reduce the tare of road version there is another kind
of vehicle Bimodal road-railway that is a frame of a wagon with the possibility
with two different little frames to college the road axels in the road version or
two bogies in the railway version.
This kind of vehicle bimodal has the great complication
of two little frame moving and two different systems of block. Moreover the change
from railway version and road version is not easy because when a bogie is dismantled
the vehicle must be supported by an external lifting till the little frame with
road axels will be set up.and blocked.
The new vehicle bimodal road-railway can circulate on railway
without special rules and it can be put in marshalling of goods trains. It does.not
request lifting or special machines to change its mode from railway to road.
The new vehicle bimodal road-railway is practically a trailer
S reinforced, and two special railway bogies C with two beams of coupling
between frame and bogies. On the beams are setted up the buffing and draw gears,
so that when the vehicle is in road version buffing and draw gears are not set up.
On the Fig. 1 the vehicle is in road version separated
from the railway bogies. It is a normal trailer towed by a motor driving. On the
Fig 1 the vehicle is flat but does not change the Patent of industrial invention
if the wagon has a different setting like ordinary flat wagon or refigerated wagon
or covered van or tank wagon etc).
To the frame of trailer S are welded the road axles a with
pneumatic suspensions and brakes system. The vehicle is completed with two telescopic
legs and with the centre pin and lighting plant.
The road axles can be lifted by the pneumatic suspensions
so that the vehicle can get three different heights. P1 the height of road running.
P2 the height of changing from road trailer to railway
P3 the height of railway running.
In Fig 2 the vehicle is shown in the changement from road
version to railway wagon . The frame of trailer is lifted utilising the pneumatic
suspensions and the telescopic legs z so that the railway bogies C can be
put under the frame. Than lowing the frame S with the pneumatic suspensions
it is possible to block the frame to the beam T.
The same lowing of frame can be made for the other bogie
but utilising the pneumatic legs z .
Each beam T is equipped with buffing and draw gears
In Fig.3 is showed the vehicle in railway version with
two bogies C connected to the frame S. The road axles are lifted so that they don't
interfere with railway gauge.
Every bogie are equipped with hydraulic brake gear hydraulic
clutch with other wagons.
In Fig 4 is showed a bogie with the beam T. The railway
bogie is made with components approved by the Italian railway.
Between the beam T and the bogie C is placed a bearer plates
c so that the bogie can rotate in every bend.
Every beam T is made with two lateral beam 1 and a frontal
beam f. On the frontal one are fixed the buffers r and the coupling hook g.
The beam T has a section sloped to facilitate the centring
of frame S with the bodie C.
When the frame is supported by the structure T is possible
to activate the mechanism that block the bogie C to the frame S
Lifting the road axles a by the pneumatic suspensions the
Trailer is transformed in a wagon with two bogies, qualified to circulate on every
Every detail or component can be substituted with other
similar without for this to exit from this Patent.