140 Ton Truss Bridge Beam Launcher Crane
The 140 Ton Truss Bridge Beam Launcher Crane is designed for safe, precise, and efficient erection of heavy bridge girders. It uses a truss-type main structure to achieve high strength with reduced self-weight, making it suitable for long-span bridge construction and complex terrain conditions.
It operates by lifting bridge beams from transport vehicles, moving them along the erected bridge, and placing them accurately onto bridge piers.
Core Function
The primary purpose of a 180ton bridge launcher is to lift, transport, and precisely place heavy prefabricated concrete or steel bridge components, typically weighing up to 180 tons (metric tons, ~165 US tons), during the construction of viaducts, overpasses, and highway bridges.
Key Design Parameters & Performance Specifications
| Parameter | Specification |
|---|---|
| Lifting Capacity (per girder) | 140 Metric Tons |
| Maximum Span (Pier to Pier) | 50 meters (Typical), customizable up to 60m |
| Minimum Curve Radius | 2,000 meters (can be designed for tighter radii) |
| Maximum Supported Grade | ±4% |
| Lifting Hoists | 2 x Main Hoists (typically 120-ton capacity each) |
| Hoist Lifting Speed | 0-5 m/min (variable speed control) |
| Trolley Traversing Speed | 0-10 m/min (variable speed control) |
| Main Beam Launching Speed | 0-5 m/min (variable speed control) |
| Machine Self-Propelling Speed | 0-5 m/min (variable speed control) |
| Control System | Centralized PLC with frequency control for all motions. Remote control operation. |
| Power Supply | 380V / 50Hz / 3 Phase (or as per project requirement) |
Pictures & Components
⚙️ Main Structure & Components
🏗️ 1. Truss Main Girder
High-strength steel truss structure
Lightweight design with high rigidity
Supports heavy lifting and long spans
🔩 2. Lifting System
Twin winch or dual hoist system
Synchronized lifting for balance
Equipped with wire rope drums and brakes
🚋 3. Lifting Trolley
Travels along the main girder
Carries lifting hooks or spreader beams
Enables precise beam positioning
➡️ 4. Longitudinal Traveling System
Moves the launcher forward span by span
Rail-mounted or wheel-based movement system
🦾 5. Support Legs System
Front, middle, and rear support legs
Adjustable height for different pier conditions
Ensures structural stability during erection
↔️ 6. Lateral Adjustment System
Side shifting mechanism for alignment correction
Improves installation accuracy
⚡ 7. Hydraulic System
Controls lifting and support adjustments
Ensures synchronized and smooth operation
🧠 8. Electrical Control System
PLC-based intelligent control system
Includes sensors, limit switches, and monitoring devices
Supports cabin or remote operation
🔒 9. Safety Protection System
Overload protection
Anti-tilt monitoring
Wind speed alarm system
Emergency stop system
Limit switches for lifting and travel
Sketch
Advantages
🏗️ 1. High Load Capacity
Capable of lifting up to 140 tons per beam segment
Suitable for heavy precast concrete and steel girders
Ideal for large-scale infrastructure projects
🚀 2. High Construction Efficiency
Continuous beam erection without large ground cranes
Significantly reduces construction time per span
Enables fast and repetitive installation cycles
🎯 3. High Precision Installation
Equipped with trolley and lateral adjustment systems
Ensures accurate alignment of bridge beams on piers
Reduces rework and installation errors
🏗️ 4. Lightweight Truss Structure
Truss design reduces overall machine weight
Maintains high strength and rigidity
Easier transportation and assembly compared to box-type structures
🔄 5. Self-Launching Capability
Moves forward along completed bridge spans
Eliminates need for external lifting equipment after setup
Ideal for long-distance bridge construction
🔒 6. High Safety Performance
Multiple protection systems including:
Overload protection
Anti-tilt monitoring
Limit switches
Emergency stop system
Wind speed alarm
⚙️ 7. Strong Adaptability
Suitable for:
Highway bridges
Railway bridges
Viaducts and elevated roads
Performs well in mountainous, river, and urban environments
💰 8. Cost-Effective Construction Method
Reduces dependency on large crawler or gantry cranes
Lowers manpower and equipment rental costs
Improves overall project economics
🧩 9. Modular Design
Easy disassembly and transportation
Convenient for relocation between construction sites
Quick assembly and commissioning
⚖️ 10. Stable Structural Performance
High-strength steel truss ensures rigidity
Minimal deflection under full load
Reliable operation during long-span erection
Application
A 140 Ton Truss Bridge Beam Launcher Crane is widely used in large-scale bridge construction projects for the installation of heavy precast beams and girders. It is designed for highway, railway, and elevated infrastructure construction where accuracy, safety, and efficiency are required.
🛣️ 1. Highway Bridge Construction
Installation of precast concrete girders for expressways and highways
Suitable for:
Multi-span bridges
Overpasses and flyovers
Enables fast construction with minimal traffic disruption
🚆 2. Railway & High-Speed Rail Bridges
Used for heavy prestressed concrete beams
Common in:
Conventional railway lines
High-speed rail (HSR) projects
Ensures precise alignment for safe rail operation
🌉 3. Viaducts & Elevated Roadways
Construction of:
Urban viaducts
Elevated highways
Interchange ramps
👉 Ideal for dense urban environments with limited ground access
🌄 4. Mountain & Valley Bridge Projects
Suitable for:
Deep valleys
Mountainous terrain
River crossings
👉 Eliminates the need for large ground cranes in difficult terrain
🌊 5. River, Lake & Coastal Bridges
Used for long-span crossings over water bodies
Stable erection system suitable for:
Strong wind conditions
Complex foundation layouts
🚇 6. Metro & Urban Rail Transit Projects
Installation of precast segments for:
Metro viaducts
Light rail transit systems
👉 Provides precise beam placement in tight city spaces
🏗️ 7. Precast Segmental Bridge Construction
Handles:
Box girders
T-beams
Segmental precast elements
👉 Supports modern industrialized bridge construction methods
🔁 8. Long-Span Continuous Bridge Projects
Ideal for repetitive span erection
Suitable for continuous girder bridge construction
Improves efficiency in large infrastructure corridors
Production Procedure
🧠 1. Engineering Design & Planning
Confirm project requirements:
140T lifting capacity
Beam length, span, and bridge type
Construction environment (highway / railway / terrain)
Perform engineering analysis:
Structural strength calculation
Load distribution analysis
Finite Element Analysis (FEA)
Deflection and stability checks
👉 Output:
General Arrangement (GA) drawings
Fabrication drawings
Assembly and erection plan
🔩 2. Raw Material Selection & Inspection
Use high-strength structural steel (e.g., Q345B / Q420)
Inspect materials for:
Chemical composition
Mechanical strength
Dimensional accuracy
Surface defects
👉 Only certified steel is approved for production
🔨 3. Steel Structure Fabrication
Cutting Process
CNC plasma/flame cutting of steel plates
Precision cutting of truss members and plates
Forming & Assembly
Bending and shaping of structural parts
Pre-assembly alignment before welding
Welding
Submerged Arc Welding (SAW) for main truss
CO₂ gas shielded welding for secondary parts
👉 Ensures high structural strength and durability
🔍 4. Welding Inspection & NDT Testing
Non-Destructive Testing (NDT):
Ultrasonic Testing (UT)
Magnetic Particle Testing (MT)
Visual inspection (VT)
👉 Detects internal cracks, porosity, and welding defects
⚙️ 5. Machining & Precision Processing
CNC machining of:
Wheel sets
Bearing housings
Shaft connections
Pin joints
👉 Ensures smooth movement and perfect alignment
🧩 6. Component Manufacturing
Production of key systems:
Lifting winch system
Trolley mechanism
Hydraulic cylinders
Spreader beams
👉 Each system is tested before final assembly
🔗 7. Pre-Assembly (Factory Trial Fit-Up)
Partial or full dry assembly in factory
Check:
Structural alignment
Bolt hole matching
System compatibility
👉 Reduces installation issues on-site
⚡ 8. Electrical & Hydraulic System Installation
Install:
PLC control system
Electrical wiring and sensors
Hydraulic pumps and pipelines
👉 Includes:
Insulation testing
Leakage testing
System response testing
🎨 9. Surface Treatment & Painting
Shot blasting (Sa2.5 cleaning standard)
Anti-rust primer coating
Final protective paint layer (weather-resistant)
👉 Provides long-term corrosion protection
🧪 10. Factory Testing & Quality Inspection
Load Testing
Static load test: 125% of rated load
Dynamic load test: 110% of rated load
Functional Testing
Lifting system operation
Trolley movement
Longitudinal travel system
Hydraulic synchronization
👉 Ensures compliance with international standards
📦 11. Disassembly & Packaging
Modular disassembly for transport
Proper packaging of:
Truss sections
Mechanical parts
Electrical systems
👉 Suitable for container or bulk shipment
🏗️ 12. On-Site Installation & Commissioning
Assembly of truss structure
Installation of lifting and control systems
Alignment and calibration
Full system commissioning test
👉 Includes operator training and handover
🔒 Quality Control Highlights
Full compliance with ISO / EN / FEM standards
Material traceability for all steel components
Welding records and inspection reports
Strict multi-stage QA/QC process
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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