150ton Counterweight Beam Launcher Machine For Erecting Concrete Girder

A counterweight bridge launching girder is a type of bridge construction equipment used to install precast bridge segments over obstacles like rivers, roads, or valleys.

The 150 Ton Counterweight Beam Launcher Machine is a specialized bridge construction equipment designed for the safe and efficient erection of precast concrete girders in highway, railway, and urban viaduct projects. Equipped with a counterweight balancing system, the launcher ensures excellent stability during girder lifting and launching operations, especially in challenging construction environments such as mountainous areas, rivers, and elevated bridge sections.

 

 

 

Main Features

Strong lifting capacity up to 150 tons

Counterweight design for enhanced operational stability

Suitable for precast concrete girder erection

Hydraulic drive system with reliable performance

Easy assembly, transportation, and maintenance

High safety standards with automatic monitoring systems

Applicable for highway bridges, railway bridges, and metro viaducts

 

 

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)

 

 

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Main Components of 150 Ton Counterweight Beam Launcher Machine

The 150 Ton Counterweight Beam Launcher Machine is composed of several major structural, mechanical, hydraulic, and electrical components that work together to ensure safe and efficient concrete girder erection.

1. Main Girder Structure

The main girder is the primary load-bearing structure of the launcher. It supports the lifting system and transfers loads during beam launching operations. It is usually manufactured from high-strength steel with modular sections for easy transportation and assembly.

2. Counterweight System

The counterweight system provides balance and stability during girder lifting and launching. It reduces overturning moments and improves operational safety, especially when working on long spans or elevated bridge sections.

3. Front and Rear Support Legs

The support legs stabilize the machine on bridge piers or completed spans. They can move longitudinally and transversely to adapt to different working positions and span arrangements.

4. Lifting Trolleys

The lifting trolleys travel along the main girder and are equipped with hoisting mechanisms to lift, transport, and position concrete girders accurately.

5. Hoisting Mechanism

The hoisting system consists of winches, wire ropes, pulleys, hooks, and hydraulic devices used for lifting heavy girders safely and smoothly.

6. Hydraulic System

The hydraulic system powers lifting, traveling, steering, and support leg movements. It includes hydraulic pumps, cylinders, valves, pipelines, and oil tanks.

7. Traveling Mechanism

This mechanism allows the launcher to move forward during bridge construction. It includes drive motors, wheels, reducers, rails, and transmission components.

8. Electrical Control System

The electrical control system manages machine operations, safety monitoring, synchronization, and automation. It commonly includes PLC control, sensors, limit switches, control cabinets, and remote-control devices.

9. Safety Protection Devices

Safety devices ensure secure operation and may include:

Overload protection

Emergency stop system

Wind speed monitoring

Anti-collision devices

Limit switches

Automatic alarm systems

10. Beam Carrying and Positioning Device

This component helps transport and accurately position the concrete girder onto the bridge supports during erection.

11. Operator Cabin

The operator cabin provides centralized control and monitoring of the entire machine operation with clear visibility

 

 

 

 

Advantages of 150 Ton Counterweight Beam Launcher Machine

High Stability
The counterweight balancing system provides excellent stability during girder lifting and launching operations, ensuring safer construction performance.

Large Lifting Capacity
Capable of erecting concrete girders up to 150 tons, suitable for medium and large bridge construction projects.

Efficient Construction
Speeds up bridge erection processes and significantly reduces overall project construction time.

Reduced Labor Requirement
Advanced hydraulic and electrical control systems minimize manual operation and improve working efficiency.

Suitable for Complex Terrain
Ideal for bridge construction over rivers, valleys, mountains, and urban elevated sections where traditional cranes are difficult to operate.

High Safety Performance
Equipped with safety protection devices, overload protection systems, and stable launching mechanisms to ensure safe operation.

Lower Construction Cost
Reduces dependence on large lifting cranes and temporary support structures, lowering equipment and labor costs.

Easy Installation and Maintenance
Modular structure design allows convenient transportation, assembly, disassembly, and maintenance.

Wide Application Range
Suitable for highway bridges, railway bridges, metro viaducts, and precast concrete girder erection projects.

Reliable Operation
Manufactured with high-quality steel structures and durable components for long service life and dependable performance.

 

Applications of 150 Ton Counterweight Beam Launcher Machine

The 150 Ton Counterweight Beam Launcher Machine is widely used in various bridge construction and infrastructure projects for erecting precast concrete girders safely and efficiently.

Main Applications

Highway Bridge Construction
Used for installing precast concrete girders and box girders in expressway and highway bridge projects.

Railway Bridge Erection
Suitable for railway and high-speed railway bridge construction requiring precise and stable girder placement.

Urban Viaduct Projects
Applied in elevated road and flyover construction within urban areas where working space is limited.

Metro and Light Rail Construction
Ideal for erecting girders in metro viaducts and light rail transit infrastructure projects.

River and Valley Bridge Projects
Enables safe girder launching across rivers, valleys, and difficult terrains without extensive ground support equipment.

Precast Segmental Bridge Construction
Used for handling and positioning precast concrete segments and girders in segmental bridge systems.

Mountainous and Complex Terrain Construction
Suitable for projects in mountainous regions or restricted construction environments where traditional cranes are not practical.

Large Infrastructure Projects
Commonly applied in government transportation infrastructure and long-span bridge construction projects.

 

 

Production Procedure of 150 Ton Counterweight Beam Launcher Machine

The production of a 150 Ton Counterweight Beam Launcher Machine follows strict manufacturing and quality control procedures to ensure high performance, safety, and durability.

1. Design and Engineering

Develop machine design according to project requirements

Perform structural analysis and load calculations

Prepare detailed technical drawings and production plans

2. Raw Material Preparation

Select high-quality steel plates and structural materials

Inspect raw materials for strength and quality compliance

Cut materials according to fabrication drawings

3. Steel Structure Fabrication

Process and weld main girders, support frames, and structural components

Perform precision machining and assembly preparation

Conduct welding inspections and dimensional checks

4. Mechanical Component Manufacturing

Produce lifting mechanisms, traveling systems, and counterweight devices

Assemble reducers, motors, wheels, and transmission systems

Install hydraulic cylinders and mechanical accessories

5. Surface Treatment

Remove rust and impurities through sandblasting

Apply anti-corrosion primer and protective paint coating

Ensure durable surface protection for outdoor operation

6. Electrical and Hydraulic System Installation

Install electrical control cabinets, wiring, and sensors

Assemble hydraulic pumps, pipelines, and control valves

Configure automation and safety monitoring systems

7. Machine Assembly

Assemble main structure and functional components

Install lifting trolley, launching mechanism, and counterweight system

Conduct alignment and mechanical adjustments

8. Testing and Inspection

Perform no-load and full-load operation tests

Check lifting capacity, stability, and safety systems

Conduct quality inspection according to industry standards

9. Packaging and Delivery

Disassemble modules for transportation if necessary

Apply protective packaging for shipment

Arrange delivery to the project construction site

10. Installation and Commissioning

Provide on-site installation guidance

Conduct commissioning and operational testing

Train operators and maintenance personnel

The entire production process is carried out under strict quality management standards to ensure reliable operation and long service life of the beam launcher machine.

 

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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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