Bridge Girder Launcher

ZZHZ develops THQ900 bridge girder launcher for tunnels and THY900B girder transporter to solve construction technical problems below:
● high speed railway bridge and tunnels are connected frequently
● the bridge girder launcher and girder transporter need to smoothly pass the tunnel to install girders
THQ900 bridge girder launcher in tunnels and THY900B girder transporter can meet the demand to install double track whole span box girder32m, 24m, 20m for passenger special line, as well as meet the demand of span shift, tunnel entrance and exit 6m abutment and erecting curved bridge.

● construct bridge connected with tunnel, reduce cost of dismounting many times
● four fixed points lifting precast girders with balanced lifting capacity ensure the safety of concrete box girder and lifting system structure. Slight longitudinal and lateral movement of lifting system can realize accurate positioning as installing box girder
● launching nose and bridge girder launcher do a cooperative work to cross piers longitudinally, featuring easy operation, safe and reliable
● can realize span shift installation and curved bridge erection, tyred girder transporter can directly carry the bridge girder launcher to transfer sites and pass the tunnels
● matched with the launching nose, lifting trolley and auxiliary overhead crane, the bridge girder launcher can install the first and last girders as well as girders for tunnel entrance and exit.