180T Beam Launcher Machine
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180T Beam Launcher Machine

A 180T Beam Launcher Machine (also called a launching gantry, bridge girder launcher, or bridge erection machine) is specialized bridge construction equipment designed to lift, transport, and install precast concrete girders weighing up to 180 tons during highway, railway, metro, and high-speed rail bridge construction projects. The machine travels along completed bridge spans and places girders directly onto bridge piers with high precision, reducing the need for large ground cranes.
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Product Introduction

A 180T Beam Launcher Machine (also called a launching gantry, bridge girder launcher, or bridge erection machine) is specialized bridge construction equipment designed to lift, transport, and install precast concrete girders weighing up to 180 tons during highway, railway, metro, and high-speed rail bridge construction projects. The machine travels along completed bridge spans and places girders directly onto bridge piers with high precision, reducing the need for large ground cranes.

 

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Product Features

Rated lifting capacity of 170 tons for heavy concrete girder erection.

Suitable for bridge spans typically ranging from 30m to 50m.

Self-launching design eliminates the need for large ground-based cranes.

High-strength truss or box-girder structure with excellent rigidity and wind resistance.

Hydraulic lifting and traveling systems for smooth operation.

Adjustable support legs for straight, curved, and inclined bridges.

Frequency-controlled lifting and traveling mechanisms for precise positioning.

Modular structure for convenient transportation and site assembly.

Integrated safety monitoring, overload protection, and emergency stop systems.

Capable of beam feeding from the rear deck, side, or ground level depending on project requirements.

 

 

 

Key Design Parameters & Performance Specifications

ParameterSpecification
Lifting Capacity (per girder)180 Metric Tons
Maximum Span (Pier to Pier)50 meters (Typical), customizable up to 60m
Minimum Curve Radius2,000 meters (can be designed for tighter radii)
Maximum Supported Grade±4%
Lifting Hoists2 x Main Hoists (typically 120-ton capacity each)
Hoist Lifting Speed0-5 m/min (variable speed control)
Trolley Traversing Speed0-10 m/min (variable speed control)
Main Beam Launching Speed0-5 m/min (variable speed control)
Machine Self-Propelling Speed0-5 m/min (variable speed control)
Control SystemCentralized PLC with frequency control for all motions. Remote control operation.
Power Supply380V / 50Hz / 3 Phase (or as per project requirement)

product-1000-700

 

Pictures & Components

 


Components of 180T Beam Launcher Machine

1. Main Girder

  • High-strength steel box girder or truss structure
  • Serves as the primary load-bearing framework
  • Provides longitudinal movement path for lifting trolleys

2. Front Support Leg

  • Located at the front end of the launcher
  • Transfers load to the bridge pier
  • Adjustable to accommodate different span lengths

3. Middle Support Leg

  • Provides additional stability during launching operations
  • Supports the main girder when moving to the next span

4. Rear Support Leg

  • Positioned on the completed bridge deck
  • Maintains balance and structural stability
  • Assists in the launching process

5. Front Lifting Trolley

  • Equipped with electric hoist or winch system
  • Lifts and transports the front end of the concrete girder
  • Enables precise positioning during installation

6. Rear Lifting Trolley

  • Works synchronously with the front trolley
  • Supports and lifts the rear end of the girder
  • Ensures stable handling of heavy loads

7. Hoisting Mechanism

  • Consists of motors, reducers, drums, wire ropes, and hooks
  • Provides vertical lifting and lowering functions
  • Includes overload protection devices

8. Traveling Mechanism

  • Enables longitudinal movement of the launcher
  • Includes drive motors, wheel sets, reducers, and brakes
  • Allows transfer between bridge spans

9. Transverse Moving System

  • Facilitates lateral adjustment of girders
  • Ensures accurate alignment with bridge bearings
  • Improves installation precision

10. Hydraulic System

  • Hydraulic pumps, cylinders, valves, and pipelines
  • Controls support leg lifting, lowering, and positioning
  • Provides stable and smooth operation

11. Electrical Control System

  • PLC-based intelligent control platform
  • Frequency inverter speed regulation
  • Real-time monitoring and fault diagnosis

12. Operator Cabin

  • Centralized control station
  • Equipped with control panels and monitoring displays
  • Provides clear visibility of erection operations

13. Safety Protection Devices

  • Overload limiter
  • Wind speed monitoring system
  • Emergency stop system
  • Anti-collision devices
  • Limit switches
  • Safety interlocks

14. Power Supply System

  • Power cables and cable reels
  • Electrical distribution cabinets
  • Backup protection devices

15. Steel Rail and Wheel Assemblies

  • High-strength rail wheels
  • Guide wheels and rail clamps
  • Ensure smooth and safe movement along the bridge alignment

16. Maintenance Platforms and Ladders

  • Access platforms for inspection and maintenance
  • Safety handrails and anti-slip walkways
  • Convenient servicing of mechanical and electrical components

These components work together to safely lift, transport, position, and erect precast concrete girders up to 180 tons during bridge construction projects.

product-1000-700

 

Sketch

 

product-1000-515

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Advantages

 

 

Advantages of 180T Beam Launcher Machine

1. High Lifting Capacity

  • Designed to handle precast concrete girders up to 180 tons.
  • Suitable for large-scale highway, railway, and metro bridge projects.

2. Improved Construction Efficiency

  • Enables rapid girder transportation, lifting, and installation.
  • Reduces bridge erection time compared with conventional crane methods.

3. Enhanced Safety

  • Equipped with overload protection, limit switches, emergency stop systems, and wind monitoring devices.
  • Minimizes risks associated with heavy lifting operations.

4. Accurate Girder Placement

  • Dual lifting trolley system ensures stable and precise positioning.
  • Reduces alignment errors and improves construction quality.

5. Reduced Dependence on Ground Cranes

  • Operates directly on completed bridge spans.
  • Eliminates the need for large crawler cranes in difficult terrain.

6. Adaptability to Various Bridge Types

  • Suitable for straight, curved, skewed, and variable-span bridges.
  • Can operate on bridges with longitudinal and transverse slopes.

7. Lower Construction Costs

  • Reduces equipment rental, labor, and site preparation expenses.
  • Improves overall project cost efficiency.

8. Excellent Stability

  • Multiple support legs and balanced structural design provide reliable operation during lifting and launching.
  • Ensures smooth performance under heavy loads.

9. Intelligent Control System

  • PLC-based control with frequency conversion technology.
  • Allows synchronized lifting, precise movement, and real-time monitoring.

10. Minimal Ground Interference

  • Requires limited ground access beneath the bridge.
  • Ideal for construction over rivers, valleys, highways, railways, and urban areas.

11. Wide Working Range

  • Suitable for bridge spans typically ranging from 30m to 50m or customized according to project requirements.
  • Accommodates various girder types, including box girders and T-beams.

12. Reliable and Durable Construction

  • Manufactured from high-strength steel with advanced welding technology.
  • Designed for long service life and low maintenance requirements.

13. Environmental Benefits

  • Reduces disturbance to surrounding traffic and infrastructure.
  • Minimizes land occupation and environmental impact during bridge construction.

14. Flexible Span-to-Span Launching

  • Can move efficiently from one span to the next without dismantling.
  • Improves productivity on long viaduct and bridge projects.

15. Suitable for Complex Project Conditions

  • Performs effectively in mountainous regions, river crossings, coastal areas, and congested urban environments.
  • Provides a practical solution where traditional lifting equipment is difficult to deploy.

product-1000-700

 

Application

Applications of 180T Beam Launcher Machine

1. Highway Bridge Construction

  • Installation of precast concrete box girders and T-beams.
  • Suitable for expressways, flyovers, and multi-span highway bridges.
  • Enables efficient girder erection over roads, rivers, and valleys.

2. Railway Bridge Projects

  • Used for conventional railway bridge construction.
  • Ideal for erecting heavy concrete girders with high positioning accuracy.
  • Ensures safe and efficient installation in restricted construction zones.

3. High-Speed Railway Viaducts

  • Designed for precise placement of precast girders required for high-speed rail infrastructure.
  • Supports rapid construction schedules while maintaining strict alignment standards.

4. Metro and Urban Transit Systems

  • Installation of elevated metro bridge girders.
  • Suitable for urban environments where ground access is limited.
  • Minimizes disruption to traffic and surrounding infrastructure.

5. Bridge Widening and Expansion Projects

  • Used to add new girders to existing bridges.
  • Facilitates expansion work while reducing interference with ongoing traffic.

6. River and Water Crossing Bridges

  • Erects girders over rivers, lakes, reservoirs, and coastal areas.
  • Eliminates the need for floating cranes or extensive temporary supports.

7. Mountainous and Valley Bridge Construction

  • Ideal for areas with difficult terrain where conventional lifting equipment cannot operate efficiently.
  • Reduces the need for large ground-based cranes and access roads.

8. Interchange and Overpass Construction

  • Suitable for complex bridge layouts, including curved and skewed structures.
  • Ensures accurate girder placement in multi-level transportation projects.

9. Segmental Bridge Construction

  • Handles the lifting and installation of precast bridge segments.
  • Supports modern bridge construction methods that require high precision and efficiency.

10. Long Viaduct Projects

  • Efficiently launches from span to span without repeated dismantling.
  • Widely used in long-distance bridge and viaduct construction for highways, railways, and urban transit systems.

 

product-1000-700

 

Production Procedure

 

Production Procedure of 180T Beam Launcher Machine

1. Engineering Design

  • Project requirement analysis
  • Structural calculation and finite element analysis (FEA)
  • Preparation of manufacturing drawings and technical documents

2. Raw Material Procurement

  • Procurement of high-quality steel plates, sections, and mechanical components
  • Verification of material certificates and specifications
  • Incoming quality inspection

3. Steel Plate Cutting

  • CNC flame cutting, plasma cutting, or laser cutting
  • Dimension verification according to drawings
  • Edge preparation for welding

4. Main Girder Fabrication

  • Assembly of box girders or truss sections
  • Plate forming, positioning, and tack welding
  • Dimensional inspection during assembly

5. Support Leg Manufacturing

  • Fabrication of front, middle, and rear support legs
  • Machining of connection points and bearing surfaces
  • Structural assembly and welding

6. Welding Process

  • CO₂ gas-shielded welding and submerged arc welding
  • Strict welding procedure control
  • Weld quality inspection throughout production

7. Non-Destructive Testing (NDT)

  • Ultrasonic Testing (UT)
  • Magnetic Particle Testing (MT)
  • Visual Inspection (VT)
  • Verification of critical weld integrity

8. Machining of Components

  • Precision machining of wheel assemblies, shafts, bearing seats, and connection parts
  • Drilling, milling, boring, and turning operations
  • Dimensional accuracy inspection

9. Surface Treatment

  • Shot blasting to remove rust and scale
  • Surface cleaning to specified standards
  • Preparation for painting

10. Painting and Corrosion Protection

  • Primer application
  • Intermediate coating
  • Final topcoat painting
  • Dry film thickness inspection

11. Mechanical Assembly

  • Installation of lifting trolleys
  • Installation of traveling mechanisms
  • Assembly of wheel sets, reducers, brakes, and drive systems

12. Hydraulic System Installation

  • Mounting of hydraulic cylinders, pumps, valves, and pipelines
  • Hydraulic circuit testing
  • Pressure and leakage inspection

13. Electrical System Installation

  • Installation of motors, PLC control system, sensors, and limit switches
  • Cable routing and electrical wiring
  • Control cabinet assembly

14. Pre-Assembly and Alignment

  • Factory pre-assembly of major structural sections
  • Alignment and dimensional verification
  • Functional testing of moving components

15. No-Load Testing

  • Testing of hoisting, traveling, launching, and hydraulic functions
  • Verification of control system performance
  • Safety device testing

16. Load Testing

  • Static load test
  • Dynamic load test
  • Verification of lifting capacity and operational stability

17. Final Quality Inspection

  • Comprehensive mechanical, electrical, and structural inspection
  • Documentation review
  • Factory acceptance inspection

18. Packaging and Shipment

  • Disassembly into transportable sections
  • Protective packing of components
  • Container or bulk cargo loading

19. Site Installation

  • Assembly of structural sections at the project site
  • Installation of electrical and hydraulic systems
  • Alignment and commissioning

20. Final Commissioning and Handover

  • Operational testing under working conditions
  • Operator training
  • Final acceptance by the customer
  • Project handover and after-sales support

product-1000-700

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Workshop View

 

The company has installed an intelligent equipment management platform, and has installed 310 sets (sets) of handling and welding robots. After the completion of the plan, there will be more than 500 sets (sets), and the equipment networking rate will reach 95%. 32 welding lines have been put into use, 50 are planned to be installed, and the automation rate of the entire product line has reached 85%.

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