Bridge Girder Launcher for Tunnels

Bridge Girder Launcher for Tunnels

Bridge Girder Launcher for Tunnels To solve construction technical problems below: A. High speed railway bridge and tunnels are connected frequently B. The bridge girder launcher and girder transporter need to smoothly pass the tunnel to install girders 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.

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Product Details


  • Rated Lifting Capacity (Max Lifting Capa: 900 T

  • Moving Speed of Bridge Girder Launcher (: 0-3m/Min

  • Trolley Lifting Speed (M/Min): 0-0.5 (Full Load)/ 0-1(Empty Load)

  • Total Weight (T): 585

  • Specification: ISO9001: 2008, CE

  • Trolley Longitudinal Moving Speed (M/Min: 0-3 (Full Load)/ 0-6 (Empty Load)

  • Max Lifting Height (M): 7

  • Power (Kw): 300


  1. Application range

    To solve construction technical problems below:
    A. High speed railway bridge and tunnels are connected frequently
    B. The bridge girder launcher and girder transporter need to smoothly pass the tunnel to install girders
    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.

    2. Main features and advantages bridge girder launcher for tunnels


    A. Construct bridge connected with tunnel, reduce cost of dismounting many times


    B. 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


    C. Launching nose and bridge girder launcher do a cooperative work to cross piers longitudinally, featuring easy operation, safe and reliable


    D. 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
    E. 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.

    3. Main mechanical manufacturing technology


    There are many mechanical manufacturing (machinery-building) technologies; The rules of management are following:


    A. Firstly, the technology department reviews the drawing from manufacturability.
    B. Drawing up the technology guide book and making procedure qualification.
    C. Making welding procedure card, mechanical manufacturing card, assembly process, camber drawing of box girder according to drawing, rules and criterion; Emphasizing the size of welding angle, geometry size and requirements of assembly etc.
    D. Designing the assembly technology clamp according to the requirements of drawing.
    E. Making the finishing time of manufacture and patrolling card according to the requirements of drawing; Controlling the quality of manufacture strictly.


Product ModelBridge Girder Launcher for Tunnels
Rated lifting capacity (max lifting capacity) (t) 900
Max size of the girder (m) 32.6×12.6×3.05
Moving speed of bridge girder launcher (m/min) 0-3
Trolley longitudinal moving speed (m/min) 0-3 (full load)/ 0-6 (empty load)
Trolley lifting speed (m/min) 0-0.5 (full load)/ 0-1(empty load)
Max lifting height (m) 7
Precast girder horizontal fine-tuning distance (mm) ±200
Precast girder fine-tuning speed (m/min) 0-1
Applicable gradient L1500ongitudinal gradient 20‰,
transverse gradient 40‰
Power (kw) 300
Out dimension (m) 61×15.3×14.6
Total weight (t) 585

铁路架桥机1_副本.jpg

铁路架桥机_副本.jpg


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