170T Beam Launcher Machine For Erecting Concrete Girders

A 170T Beam Launcher Machine is a specialized bridge construction equipment designed for the lifting, transportation, positioning, and erection of precast concrete girders in highway, railway, metro, and viaduct projects. It is commonly used for installing T-girders, I-girders, U-girders, and box girders with high precision and safety across bridge spans. Modern beam launchers feature self-advancing mechanisms, hydraulic support systems, and intelligent control systems to improve erection efficiency and reduce labor requirements.

 

 

 

 

Key Design Parameters & Performance Specifications

Parameter	Specification
Lifting Capacity (per girder)	170 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)

 

 

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The main components of a 170T Beam Launcher Machine include:

1. Main Girder (Launching Truss)

Primary load-bearing structure of the launcher.

Supports the lifting trolleys and concrete girder during transportation and erection.

Typically fabricated from high-strength welded steel truss or box-girder sections.

2. Front Support Leg

Supports the front end of the launcher on the bridge pier.

Transfers vertical and horizontal loads during launching and girder erection.

Equipped with hydraulic adjustment mechanisms.

3. Middle Support Leg

Provides stability and load distribution during operation.

Assists in the self-launching process when moving to the next span.

4. Rear Support Leg

Supports the rear section of the launcher.

Maintains structural balance during beam transportation and erection.

5. Front Lifting Trolley

Travels along the main girder.

Lifts and carries the front end of the concrete girder.

Equipped with hoisting winches, motors, and braking systems.

6. Rear Lifting Trolley

Lifts and supports the rear end of the girder.

Coordinates with the front trolley for synchronized lifting and movement.

7. Hoisting Mechanism

Includes motors, reducers, drums, wire ropes, hooks, and pulleys.

Responsible for lifting and lowering the concrete girder safely.

8. Longitudinal Traveling Mechanism

Enables movement of the lifting trolleys along the launcher.

Used for transporting girders to the erection position.

9. Transverse Traveling Mechanism

Allows lateral adjustment of the girder.

Ensures accurate alignment with bridge bearings.

10. Hydraulic System

Provides power for support leg adjustment, launching operations, and auxiliary movements.

Includes hydraulic pumps, cylinders, valves, and pipelines.

11. Electrical Control System

Controls all machine operations.

Includes PLC, frequency inverters, control cabinets, sensors, and monitoring devices.

12. Power Supply System

Supplies electrical power to motors, controls, and hydraulic equipment.

May be powered by grid electricity or generator sets.

13. Beam Carrying Device

Supports and stabilizes the concrete girder during transportation and erection.

Includes lifting beams, spreader frames, and suspension assemblies.

14. Wire Rope and Pulley System

Transfers lifting forces from the hoisting mechanism to the girder.

Designed with high safety factors for heavy-duty operation.

15. Safety Protection System

Overload limiter.

Travel limit switches.

Wind-speed monitoring device.

Emergency stop system.

Anti-collision protection.

Rope breakage protection.

Real-time operation monitoring system.

16. Operator Cabin (Optional)

Provides centralized control and monitoring.

Equipped with displays, joysticks, alarms, and communication systems.

17. Maintenance Platforms and Walkways

Installed along the main girder.

Facilitate inspection, maintenance, and safe operator access

 

 

 

 

1. High Lifting Capacity

Designed to handle concrete girders up to 170 tons safely and efficiently.

Suitable for large highway, railway, and metro bridge projects.

2. High Construction Efficiency

Enables rapid span-by-span girder erection.

Reduces bridge construction time significantly compared with conventional crane methods.

Allows continuous operation with minimal interruption.

3. Self-Launching Capability

Can advance from one span to the next without the assistance of large external lifting equipment.

Minimizes site preparation requirements and equipment mobilization costs.

4. Reduced Construction Cost

Decreases dependence on large crawler cranes and temporary support structures.

Reduces labor requirements and overall project expenses.

5. Excellent Safety Performance

Equipped with overload protection, limit switches, emergency stop systems, and monitoring devices.

Provides stable lifting and precise girder positioning.

Reduces risks associated with heavy-load handling.

6. Precise Beam Positioning

Front and rear lifting trolleys operate synchronously for accurate girder placement.

Hydraulic adjustment systems ensure precise alignment with bridge bearings.

7. Adaptability to Various Bridge Types

Suitable for:

Straight bridges

Curved bridges

Skew bridges

Variable-span bridges

Elevated viaducts

8. Minimal Ground Occupation

Operates primarily on completed bridge structures.

Ideal for congested urban areas, rivers, valleys, highways, and environmentally sensitive locations.

9. Strong Structural Stability

High-strength steel truss or box-girder construction provides excellent rigidity and load-bearing performance.

Capable of operating under demanding site conditions.

10. Modular Design

Components can be easily transported, assembled, dismantled, and relocated.

Facilitates use on multiple projects.

11. Wide Project Applicability

Suitable for installing:

Precast T-girders

I-girders

Box girders

U-girders

Segmental bridge elements

12. Intelligent Control System

PLC and frequency-converter control provide smooth operation.

Real-time monitoring improves operational accuracy and reliability.

Supports remote control and automated safety diagnostics.

13. Reduced Environmental Impact

Less disturbance to traffic and surrounding areas.

Lower site footprint compared with large ground-based lifting equipment.

Suitable for projects with strict environmental requirements.

14. Improved Project Schedule Reliability

Consistent erection performance regardless of difficult terrain.

Reduces delays caused by limited crane access or restricted working space.

Summary

A 170T Beam Launcher Machine offers high lifting capacity, rapid erection speed, excellent safety, precise positioning, low operating costs, and strong adaptability, making it one of the most efficient solutions for installing heavy precast concrete girders in modern bridge construction projects.

 

A 170T Beam Launcher Machine is widely used in the construction of bridges and elevated structures where heavy precast concrete girders need to be installed safely and efficiently.

1. Highway Bridge Construction

Erection of precast concrete T-girders, I-girders, and box girders.

Suitable for expressways, national highways, and elevated road projects.

Enables rapid span-by-span bridge construction.

2. Railway Bridge Construction

Installation of heavy concrete girders for conventional railway lines.

Provides accurate beam placement to meet strict railway alignment requirements.

3. High-Speed Railway Projects

Used for erecting large precast box girders on high-speed rail viaducts.

Ensures high precision and stability during installation.

4. Metro and Urban Transit Viaducts

Ideal for elevated metro systems and light rail transit projects.

Operates efficiently in densely populated urban environments with limited ground access.

5. Flyovers and Interchanges

Erection of girders for urban overpasses, flyovers, and multi-level interchanges.

Reduces disruption to existing traffic during construction.

6. Cross-River and Valley Bridges

Suitable for bridge projects over rivers, lakes, valleys, and other difficult terrains.

Eliminates the need for large cranes operating from the ground or water.

7. Curved and Skew Bridge Construction

Capable of handling girder installation on curved, skewed, and variable-width bridge alignments.

Provides precise positioning through hydraulic and trolley adjustment systems.

8. Long Viaduct Projects

Widely used in long-span elevated corridors where hundreds of girders must be erected continuously.

Increases construction productivity and consistency.

9. Infrastructure Development Projects

Expressway networks

Railway expansion projects

Urban transportation systems

Industrial transportation corridors

Port and logistics infrastructure

 

 

 

The production of a 170T Beam Launcher Machine involves a series of engineering, fabrication, assembly, and testing processes to ensure structural reliability, lifting safety, and operational performance.

1. Engineering Design

Project requirement analysis

Structural strength and stability calculations

Finite Element Analysis (FEA)

Mechanical and hydraulic system design

Electrical control system design

Preparation of manufacturing drawings

2. Raw Material Procurement and Inspection

Procurement of high-quality steel plates and profiles

Inspection of material certificates

Chemical composition verification

Mechanical property testing

Dimensional inspection

3. CNC Cutting and Material Preparation

CNC flame cutting

Plasma cutting

Saw cutting of structural members

Edge preparation for welding

Material identification and marking

4. Main Structure Fabrication

Main Girder Manufacturing

Plate assembly

Web and flange alignment

Tack welding

Full welding according to WPS requirements

Support Leg Fabrication

Front support leg manufacturing

Middle support leg manufacturing

Rear support leg manufacturing

Auxiliary Structure Fabrication

Maintenance platforms

Walkways

Guardrails

Lifting brackets

5. Welding and Quality Inspection

CO₂ gas shielded welding

Submerged arc welding

Weld visual inspection

Ultrasonic Testing (UT)

Magnetic Particle Testing (MT)

Dimensional verification

6. Machining of Components

Wheel machining

Drum machining

Shaft machining

Bearing housing machining

Pulley processing

Reducer mounting surface machining

7. Surface Treatment

Shot blasting to Sa2.5 standard

Surface cleaning

Primer coating application

Intermediate paint application

Finish coating application

Dry film thickness inspection

8. Mechanical Assembly

Installation of lifting trolleys

Wheel assembly

Winch installation

Reducer installation

Coupling installation

Brake installation

9. Hydraulic System Installation

Hydraulic cylinder installation

Hydraulic pump assembly

Hydraulic valve block installation

Hydraulic piping connection

Pressure testing

Leakage inspection

10. Electrical System Installation

Control cabinet assembly

Motor installation

PLC programming

Frequency inverter installation

Cable laying

Sensor installation

Safety device integration

11. Factory Pre-Assembly

Main girder assembly

Support leg assembly

Trolley installation

Mechanical alignment inspection

Functional verification of all mechanisms

12. Testing and Commissioning

No-Load Testing

Hoisting operation test

Trolley traveling test

Launcher traveling test

Hydraulic system test

Electrical system test

Load Testing

Static load test

Dynamic load test

Safety device verification

Structural deformation measurement

13. Final Quality Inspection

Dimensional inspection

Weld quality inspection

Paint quality inspection

Electrical system verification

Documentation review

Compliance verification

14. Packing and Delivery

Component labeling

Protective packaging

Transportation securing

Shipping documentation preparation

Loading for transport

15. Site Installation and Commissioning

Site assembly of main structures

Mechanical and electrical connections

Hydraulic system commissioning

Alignment and calibration

Trial operation

Load testing on site

Operator training

Final acceptance

 

 

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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