gantry crane for lifting girders

Used to lift, carry and load 24/32m double track whole span box girder in precast yard for 200 to 350kph 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 90° 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