Description
gantry crane for lifting girders
Used to lift, carry and load *4/*2m double track whole span box
girder in precast yard for **0 to **0kph railway passenger special
line
Main features and advantages:
Two lifting trolleys are installed on one gantry crane, lift
girders at a fixed point, single gantry crane finishes carrying
girder
Two lifting trolleys can completely meet the demand of four-point
lifting and three-point balance, as dropping girders it can have an
accurate positioning to avoid girder body distortion in the lifting
process
Door frame structure is supported by double girder and double rigid
support leg
Rail type traveling mechanism, lifting cylinder and steering
cylinder are installed in the crane moving mechanism to realize *0°
turning direction, thus realize economical and advanced performance
of crane
Crane moving mechanism adopts double track moving, three layers
balance, which can better adapt the change of lateral and
longitudinal slope, featuring balancing wheel pressure
Whole machine has a low height, traveling mechanism is driven by AC
frequency conversion motor
Controlled by electrical system, it can realize infinitely variable
speed, soft start, soft stop, avoiding impact according to load