120ton Bridge Beam Launcher
The 120-ton bridge beam launcher is a specialized piece of heavy-duty construction equipment designed for the efficient and safe installation of precast concrete beams for bridges. It is commonly used in highway, railway, and viaduct construction, ensuring fast and precise placement of large beams with minimal labor and maximum safety.
Key Features
A 120-ton bridge beam launcher is a specialized piece of heavy-duty equipment designed for lifting and placing bridge beams during construction projects. Here are its key features:
1. Load Capacity & Structure
Lifting Capacity: 120 tons, suitable for handling large precast beams.
Structure: Usually consists of a main girder, support legs, and a trolley system.
Material: High-strength steel for durability and stability.
2. Working Mechanism
Girder Launching System: Moves beams from one span to another using a rail system.
Trolley Mechanism: Equipped with a winch for lifting and positioning beams.
Hydraulic or Electric Drive: Ensures smooth operation and precise control.
3. Operational Features
Span Adaptability: Suitable for different bridge span lengths.
Adjustable Support Legs: Allows flexibility in different terrains and working conditions.
Remote & Manual Control: Enhances safety and precision in operation.
4. Safety Features
Overload Protection: Prevents excessive weight from damaging the machine.
Anti-Tilt System: Maintains balance while handling heavy loads.
Emergency Stop System: Ensures immediate shutdown in case of failure.
5. Mobility & Installation
Modular Design: Makes it easy to assemble, disassemble, and transport.
Self-Propelled System: Moves independently on bridge piers.
Compact Structure: Suitable for tight construction sites.
6. Application Areas
Highway & Railway Bridge Construction
Urban Overpasses & Viaducts
Precast Concrete Girder Erection
Specification
A 120-ton bridge beam launcher is a specialized piece of heavy machinery used for erecting precast concrete beams in bridge construction. Here are its typical specifications:
1. General Parameters
Lifting Capacity: 120 tons
Applicable Bridge Span: 20–50 meters (varies by model)
Applicable Beam Type: Precast concrete beams (T-beam, box girder, I-beam, etc.)
Structure Type: Truss or box girder launcher
2. Mechanical Specifications
Main Girder Length: 35–55 meters (customizable)
Launching Speed: 3–5 m/min (varies)
Beam Erection Method: Balanced cantilever or full-span assembly
Track Type: Rail-mounted or rubber-tired
3. Hoisting Mechanism
Lifting Winch Capacity: 120 tons
Lifting Speed: 0.5–5 m/min
Number of Winches: 2 or 4 (based on design)
4. Traveling Mechanism
Transverse Moving Speed: 2–6 m/min
Longitudinal Moving Speed: 3–8 m/min
Power Source: Hydraulic or electric motor
5. Power Supply
Voltage: 380V/50Hz (customizable)
Control Mode: Remote control + manual operation
6. Safety Features
Overload protection
Emergency stop system
Anti-derailment protection
Wind resistance up to 10 m/s
Pictures & Components
A 120-ton bridge beam launcher (also known as a bridge girder launcher or bridge erection crane) is a specialized construction machine used for erecting precast concrete or steel girders for bridges. It consists of several key components:
1. Main Structure
Main Girder: The primary load-bearing beam that spans the bridge supports.
Support Legs (Front and Rear): Adjustable legs that support the launcher on the piers.
End Beams: Located at both ends, connecting the main girder to the support legs.
2. Lifting and Hoisting System
Winches and Hoists: Used to lift and position the precast girders.
Wire Ropes and Pulleys: Essential for controlling lifting and movement.
Hydraulic System: Provides power for lifting and positioning.
3. Traveling Mechanism
Rail or Track System: Allows the launcher to move along the bridge alignment.
Trolley Mechanism: Moves the hoisting system back and forth.
Drive Motors and Gear System: Provides movement and positioning.
4. Safety and Control System
Electric Control System: PLC (Programmable Logic Controller) for automation.
Remote Control Panel: Allows operators to control the launcher safely.
Sensors and Limit Switches: Ensure safety and prevent overloading.
Braking System: Prevents uncontrolled movement.
5. Power Supply System
Electric or Hydraulic Power Unit: Provides the necessary energy for lifting and movement.
Cables and Connectors: Ensure reliable power transmission.
6. Support and Stability Components
Counterweights: Balances the structure and prevents tilting.
Adjustable Supports: Ensures stability on different terrains.
Sketch
Advantages
A 120-ton bridge beam launcher is a specialized piece of equipment used for launching precast bridge girders or beams during bridge construction. It is commonly used in large-scale infrastructure projects such as highway and railway bridges. Here are some key advantages of a 120-ton bridge beam launcher:
1. High Lifting Capacity
The 120-ton capacity allows it to handle large and heavy precast bridge beams, making it suitable for various bridge construction projects.
2. Increased Efficiency
Reduces the need for multiple cranes, streamlining the beam launching process.
Speeds up construction, minimizing project timelines and labor costs.
3. Enhanced Safety
Designed with advanced safety features, including overload protection and stability mechanisms.
Reduces risks associated with manual handling and traditional crane-based lifting.
4. Versatility in Bridge Construction
Suitable for different types of bridge spans, including simply supported beams, continuous beams, and cantilever bridges.
Can be used for both highway and railway bridge construction.
5. Adaptability to Complex Terrains
Can operate in challenging environments, including mountainous regions, rivers, and urban areas with limited space.
Enables construction in areas where crane access is difficult.
6. Cost-Effective Solution
Reduces dependency on large cranes and extensive scaffolding, lowering overall construction costs.
Minimizes road closures and traffic disruptions.
7. Precision and Automation
Equipped with automated control systems for accurate positioning and alignment of beams.
Remote control operation enhances precision and reduces human intervention.
8. Modular and Customizable
Can be customized to meet specific project requirements, such as span lengths and beam sizes.
Modular design allows for easy transportation and assembly.
Application
A 120-ton bridge beam launcher is a specialized piece of heavy machinery used in bridge construction projects for lifting and placing precast beams or girders onto bridge piers. These launchers are essential for large-scale infrastructure projects, particularly for highway and railway bridges.
Applications of a 120-Ton Bridge Beam Launcher
Highway Bridge Construction
Used to lift and place precast concrete or steel girders across bridge spans.
Works efficiently in confined spaces or areas with limited crane access.
Railway Bridge Construction
Essential for launching heavy railway bridge girders over long spans.
Ensures precision alignment for high-speed railway projects.
Urban Viaduct Construction
Used in elevated metro and urban transport projects to install pre-built beams.
Reduces construction time in congested city environments.
River and Valley Crossings
Used to construct bridges over rivers, valleys, or gorges where ground access is challenging.
Eliminates the need for temporary scaffolding or trestles.
Overpass and Flyover Construction
Efficiently installs bridge girders over existing roads or railway tracks without disrupting traffic.
Reduces dependency on large cranes.
Segmental Bridge Construction
Can be used in combination with precast segmental bridge construction techniques.
Helps in launching precast segments in sequence.
Production Procedure
1. Design & Engineering
Confirm project specifications (span, lifting capacity, site conditions).
Structural and mechanical design (CAD drawings, FEM analysis).
Electrical and hydraulic system design.
2. Material Procurement
High-strength structural steel (Q345B or equivalent).
Hydraulic system components (pumps, cylinders, hoses).
Motors, winches, and lifting mechanisms.
Electrical control systems (PLC, sensors, wiring).
Fasteners, welding materials, and safety equipment.
3. Fabrication & Manufacturing
3.1 Steel Structure Fabrication
Cutting: CNC cutting of steel plates.
Welding: Full penetration welding for key joints.
Machining: Precision drilling and shaping of components.
Surface Treatment: Sandblasting, rust-proof coating, and painting.
3.2 Mechanical & Hydraulic Assembly
Installation of main lifting mechanisms (winches, pulleys, hooks).
Integration of hydraulic cylinders and piping system.
Motor and gearbox assembly.
3.3 Electrical System Integration
Installation of PLC control system.
Wiring and sensor placement.
Emergency stop and safety features.
4. Assembly & Pre-Testing
Pre-assembly of sections in the factory.
Load test on individual components.
Functional test of hydraulic and electrical systems.
5. Factory Load Testing
No-load test: Checking movement and alignment.
Static load test: Testing with 120-ton equivalent weight.
Dynamic load test: Operation under simulated conditions.
6. Disassembly & Transportation
Marking all components for easy reassembly.
Packing and transportation to the site.
7. On-Site Installation & Commissioning
Gantry erection and alignment.
Final assembly of bridge launcher.
Testing under real-site conditions.
8. Training & Handover
Operator training for safe operation.
Maintenance guidance and troubleshooting.
Final handover and documentation.
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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