150T Beam Launcher Machine
A 150T Beam Launcher Machine is a specialized bridge construction equipment designed for lifting, transporting, and erecting precast concrete girders weighing up to 150 tons. It is widely used in the construction of highways, railways, metro viaducts, and large bridge projects where heavy concrete beams must be installed efficiently and safely.
The machine operates by moving along the completed bridge spans and placing girders directly onto bridge piers or bearings, minimizing the need for large ground-based cranes.
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
| Parameter | Specification |
|---|---|
| Lifting Capacity (per girder) | 150 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
A 150T Beam Launcher Machine consists of the following major components:
1. Main Girder (Launching Girder)
The primary load-bearing structure of the machine.
Usually fabricated as a steel truss or box-girder design.
Supports lifting trolleys and transfers loads to support legs.
Provides longitudinal movement during beam erection.
2. Front Support Leg
Located at the front end of the launcher.
Supports the machine on the bridge pier or completed span.
Assists in launching the machine to the next span.
3. Middle Support Leg
Main load-bearing support during girder lifting operations.
Transfers vertical loads from the launcher and girder to the bridge structure.
Often equipped with hydraulic adjustment devices.
4. Rear Support Leg
Positioned on the completed bridge span.
Stabilizes the launcher during lifting and traveling operations.
Supports machine advancement between spans.
5. Lifting Trolleys
Normally two synchronized trolleys operate along the main girder.
Lift and transport concrete girders.
Equipped with winches, wire ropes, and lifting hooks.
6. Hoisting Mechanism
Includes electric winches, motors, reducers, drums, and wire ropes.
Provides vertical lifting and lowering of girders.
Designed for precise load control and synchronization.
7. Traveling Mechanism
Longitudinal Traveling System
Moves the launcher along the bridge axis.
Uses wheel assemblies, motors, and reducers.
Transverse Traveling System
Allows lateral movement of girders.
Ensures accurate beam placement on bearings.
8. Hydraulic System
Hydraulic cylinders for support leg adjustment.
Power units, pumps, valves, and pipelines.
Used for lifting, leveling, steering, and launching operations.
9. Electrical Control System
PLC-based control cabinet.
Variable Frequency Drives (VFDs).
Sensors and monitoring devices.
Remote and cabin control operation.
10. Power Supply System
Electrical distribution panels.
Cable reels and power cables.
Emergency backup systems.
11. Beam Carrying Device
Spreader beams.
Lifting slings.
Special lifting frames designed for concrete girders.
12. Wheel Assemblies
Forged steel wheels.
Bearings and axle systems.
Designed to support heavy loads while traveling.
13. Safety Protection System
Overload limiters.
Wind speed sensors.
Travel limit switches.
Anti-collision devices.
Emergency stop buttons.
Rope break protection devices.
14. Operator Cabin (Optional)
Centralized control station.
Monitoring screens and control panels.
Provides clear visibility of erection operations.
15. Communication and Monitoring System
Wireless communication devices.
CCTV cameras.
Real-time operational monitoring.
Fault diagnosis and alarm systems.
Sketch
Advantages
1. High Lifting Capacity
Designed to handle precast concrete girders up to 150 tons.
Suitable for large highway, railway, and metro bridge projects.
Provides stable lifting performance under heavy loads.
2. High Construction Efficiency
Enables rapid erection of concrete girders.
Reduces bridge construction time compared with conventional crane methods.
Continuous span-by-span operation improves project productivity.
3. Excellent Safety Performance
Multi-support structure ensures operational stability.
Equipped with overload protection, limit switches, emergency stop systems, and wind monitoring devices.
Minimizes risks associated with heavy lifting operations.
4. Precise Beam Positioning
Allows accurate longitudinal and transverse movement of girders.
Ensures proper alignment with bridge bearings.
Improves overall bridge construction quality.
5. Reduced Dependence on Ground Conditions
Operates directly on bridge piers and completed spans.
Suitable for rivers, valleys, mountains, and congested urban areas.
Eliminates the need for large ground-based lifting equipment.
6. Lower Construction Costs
Reduces crane rental and transportation expenses.
Requires fewer support vehicles and lifting equipment.
Decreases labor requirements and project overhead costs.
7. Adaptability to Various Girder Types
Suitable for:
Precast box girders
T-girders
U-girders
Segmental concrete beams
Can be customized for different span lengths and bridge designs.
8. Continuous Launching Capability
Can advance automatically from one span to the next.
Reduces machine dismantling and reassembly time.
Improves overall erection efficiency.
9. High Stability During Operation
Optimized steel structure design provides excellent rigidity.
Multiple support legs distribute loads effectively.
Maintains stability during lifting, traveling, and beam placement.
10. Minimal Environmental Impact
Requires less ground occupation than crawler cranes.
Reduces disruption to traffic, waterways, and surrounding areas.
Ideal for environmentally sensitive construction sites.
11. Reliable Operation
PLC-controlled electrical system ensures smooth and synchronized movements.
Hydraulic and mechanical systems are designed for heavy-duty service.
Suitable for long-term continuous operation in demanding environments.
12. Wide Application Range
Highway bridges
High-speed railway viaducts
Metro elevated structures
Interchange bridges
River-crossing bridges
Mountain and valley bridge projects
Summary
The 150T Beam Launcher Machine offers high lifting capacity, superior safety, precise beam placement, rapid construction speed, and excellent adaptability, making it an ideal solution for modern bridge construction projects involving heavy precast concrete girders. Its ability to operate independently of ground conditions significantly improves efficiency while reducing overall construction costs.
Application
The 150T Beam Launcher Machine is widely used for the installation of heavy precast concrete girders in various bridge construction projects. Its ability to lift, transport, and accurately position girders makes it an essential piece of equipment for modern infrastructure development.
1. Highway Bridge Construction
Erection of precast concrete box girders and T-girders.
Construction of expressways, flyovers, and overpasses.
Suitable for long viaduct sections requiring rapid beam installation.
Typical Projects
Expressway bridges
Interchange ramps
Urban overpasses
Ring road viaducts
2. High-Speed Railway Bridges
Installation of large precast railway box girders.
Ensures precise alignment required for high-speed rail operations.
Supports efficient construction of long railway viaducts.
Typical Projects
High-speed rail corridors
Passenger railway bridges
Freight railway viaducts
3. Metro and Light Rail Transit Systems
Erection of elevated metro guideway girders.
Suitable for construction in densely populated urban environments.
Minimizes disruption to existing roads and traffic.
Typical Projects
Elevated metro lines
Light rail transit (LRT) systems
Urban rapid transit networks
4. River and Water-Crossing Bridges
Used where conventional cranes have limited access.
Enables girder installation over rivers, lakes, reservoirs, and canals.
Improves safety and construction efficiency over water.
Typical Projects
River-crossing highway bridges
Reservoir bridges
Canal and waterway crossings
5. Mountain and Valley Bridge Projects
Ideal for difficult terrain where ground-based lifting equipment cannot operate efficiently.
Allows girder erection across deep valleys and mountainous regions.
Typical Projects
Mountain highway bridges
Valley viaducts
Elevated transportation corridors
6. Long-Span Viaduct Construction
Supports repetitive span-by-span girder installation.
Particularly effective for projects with numerous identical spans.
Increases productivity and reduces construction time.
Typical Projects
Highway viaducts
Railway viaducts
Urban elevated road systems
7. Bridge Widening and Reconstruction Projects
Assists in replacing or adding new girders to existing bridge structures.
Can work in areas with restricted construction space.
Typical Projects
Bridge expansion projects
Structural rehabilitation works
Infrastructure upgrades
8. Large Infrastructure Development Projects
Suitable for national transportation networks and major civil engineering works.
Provides efficient erection solutions for high-volume girder installation programs.
Typical Projects
National highway systems
International railway corridors
Urban transportation expansions
Industrial transportation routes
Summary
The 150T Beam Launcher Machine is primarily applied in highway bridges, railway viaducts, metro systems, river crossings, mountain bridges, and large-scale infrastructure projects. Its ability to operate efficiently in challenging environments while ensuring safe and precise girder placement makes it one of the most effective solutions for modern bridge construction.
Production Procedure
The production of a 150T Beam Launcher Machine involves a series of engineering, fabrication, assembly, inspection, and testing processes to ensure structural integrity, operational safety, and compliance with project specifications.
1. Engineering Design
Determine lifting capacity, span length, and working conditions.
Perform structural analysis and load calculations.
Develop fabrication drawings and assembly plans.
Design electrical and hydraulic control systems.
Outputs
General arrangement drawings
Manufacturing drawings
Electrical schematics
Hydraulic diagrams
2. Raw Material Procurement and Inspection
Purchase certified steel plates, profiles, pipes, and mechanical components.
Verify material certificates and specifications.
Conduct dimensional and quality inspections.
Inspection Items
Material grade verification
Thickness measurement
Surface defect inspection
Mechanical property certification
3. Steel Plate Cutting
CNC flame cutting
Plasma cutting
Laser cutting (for precision components)
Fabricated Parts
Main girder plates
Support leg components
Stiffeners
Connection plates
4. Plate Forming and Machining
Plate bending and rolling.
Edge preparation for welding.
Machining of critical connection surfaces.
Machined Components
Wheel assemblies
Bearing housings
Pin shafts
Connection flanges
5. Main Girder Fabrication
Assemble box girder or truss sections.
Install diaphragms and stiffeners.
Perform dimensional checks during assembly.
Key Requirements
Structural rigidity
Welding quality
Alignment accuracy
6. Support Leg Fabrication
Manufacture front, middle, and rear support legs.
Install hydraulic cylinder mounting points.
Verify dimensional tolerances.
7. Welding Assembly
Weld all structural sections according to approved procedures.
Use qualified welders and certified welding processes.
Welding Methods
Submerged Arc Welding (SAW)
CO₂ Gas Shielded Welding
Manual Arc Welding
8. Non-Destructive Testing (NDT)
Inspect critical welds and structural connections.
Testing Methods
Ultrasonic Testing (UT)
Magnetic Particle Testing (MT)
Dye Penetrant Testing (PT)
Visual Inspection (VT)
Purpose
Detect cracks
Identify weld defects
Verify structural integrity
9. Stress Relief and Correction
Correct any welding deformation.
Perform stress-relief treatment when required.
Recheck structural dimensions.
10. Surface Preparation
Remove rust, scale, and contaminants.
Typical Standard
Shot blasting to Sa 2.5 cleanliness level
11. Painting and Corrosion Protection
Apply anti-corrosion coatings.
Coating System
Epoxy zinc-rich primer
Epoxy intermediate coat
Polyurethane topcoat
Benefits
Corrosion resistance
Weather protection
Extended service life
12. Mechanical Assembly
Install wheel sets and traveling mechanisms.
Assemble lifting trolleys and winches.
Install wire ropes and pulley systems.
Main Assemblies
Main girder
Support legs
Hoisting mechanisms
Traveling mechanisms
13. Hydraulic System Installation
Install hydraulic cylinders, pumps, valves, and pipelines.
Fill hydraulic oil and perform pressure testing.
Verification
Leak testing
Pressure testing
Functional testing
14. Electrical System Installation
Install motors, control cabinets, sensors, and cables.
Configure PLC and VFD systems.
Functions
Hoisting control
Traveling control
Safety monitoring
Remote operation
15. Factory Assembly
Complete machine assembly within the workshop.
Verify dimensional accuracy and component fit-up.
Inspection Items
Structural alignment
Connection integrity
Operational clearance
16. No-Load Testing
Test all motions without load.
Tested Functions
Hoisting
Longitudinal travel
Transverse travel
Hydraulic operation
Electrical controls
17. Load Testing
Conduct static and dynamic load tests using test weights.
Typical Tests
100% rated load operational test
125% overload static test
Safety device verification
Objectives
Confirm structural performance
Verify lifting capability
Ensure operational safety
18. Final Inspection and Quality Acceptance
Perform comprehensive quality checks.
Review all manufacturing and testing records.
Prepare inspection reports and certificates.
Documentation
Material certificates
Welding records
NDT reports
Test reports
Operation manuals
19. Packing and Shipment
Disassemble large modules for transportation.
Protect components against corrosion and damage.
Mark and label all parts for site installation.
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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