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|Bridge Girder Launching Crane, One of the bridge
construction machinery, its boom is a box girder,
which is hung forward, and there is a collapsible
column at the front end.
The Beam Launcher can drive itself into the bridge
position under no load condition, then straighten
the front column and support it on the front pier.
When the beam (or the whole beam) moves along the
boom, the boom is close to the simply supported
beam. When the bridge is bridged, the machine can
move into the bridge position on its own in the
empty state. First, the beam must be transferred
from a special gantry crane to a special beam
truck, then the rear end of the girder car and the
bridge erecting machine is countered, and the beam
is hoisted with two hanging beams on the crane arm
of the bridge erecting machine, along the crane
arm, to the bridge position. Beam.
The main structure of the bridge erecting machine
consists of the main beam, the upper cross beam
and the front frame, the hoisting crane, the
supporting and transecting wheel group, the track
system, the supporting wheel mechanism, the front
hydraulic top lifting mechanism, the rear driving
device, the transport beam flat car, the
electrical system and so on.