This machine can combine 900 ton tyre trolley to work for
double-line high speed Railway Bridge with box beams in the length
of 20m, 24m and 32m.
1）Working environment and condition
·Launching concrete box beam with same length span or
different length span, with ballast or without ballast.
·Different height of the concrete box beam in one
· Surmountable slope 3 %
· Min. radius of the bridge 1400m
·Wind speed: 72km/h with load, 144km/h without
2）Main technical characteristics
· When the launching gantry finishes placing concrete beams
and the under bridge tries to launch forward，the whole machine is
driven by the chain system of the small trolley under the launching
leg. That can ensure a stable movement, and will never create
additional force movement to the gantry.
· When the location of machine assembly is close to the
launching jobsite, the launching gantry can move to the abutment
itself and can also place itself on the pier to be ready to erect
concrete box beams.
· After finishing erecting the concrete beam of one bridge,
the launching gantry can move forward by itself on the deck or go
through the existing deck or steel bridge.
· With the help of special transporting frame, the launching
gantry can be moved on the railway basement or deck by tyre
·When it is necessary to go through certain areas with height
limits or some narrow areas such as tunnels, the machine can be
partly disassembled to reduce its section dimension. Then with the
help of transporting the frame, the launching gantry can pass the