Double Girder Gantry Crane | Heavy Duty MG Gantry Crane 20-500 Ton

Product Introduction

The MG double girder gantry crane is composed of a bridge frame, wagon running mechanism, trolley, and electrical equipment. The bridge adopts a box-type double-beam welding structure, and the operation mechanism of the cart is driven separately. All mechanisms are operated in the driver’s cab. This setup enables efficient and secure heavy load lifting and movement, making it a reliable solution for various industrial applications. The MG double girder gantry crane is suitable for open warehouses, yards, railway freight stations, and port dock cargo areas for loading, unloading, and lifting operations. It can also be matched with a variety of spreaders for special work.

Main Components

• Main Girder — Box-type double beam welding structure
• Flexible Leg — Accommodates thermal expansion and structural movement
• Ground Beam — Stable foundation support
• Rigid Leg — Provides structural rigidity and stability
• Lifting Trolley — For precise load handling
• Heavy Duty Trolley Festoon System — Reliable power supply to trolley
• High-strength Alloy Forged Hook — DIN standard safety hook
• LT Wheel Mechanism — Smooth travel along rails
• LT Power Supply Cable Reel Drum — Efficient cable management
• Maintenance Platform — Safe access for inspections

Key Features

• Saving Building Cost and Energy Saving: Optimized structural design reduces facility requirements and energy consumption.
• Heavy Duty Processing: Designed for demanding industrial lifting tasks.
• Smart Driving, Higher Efficiency: Intelligent control systems for enhanced productivity.
• Stepless Control: Infinite variable speed for precise load positioning.
• Hardened Gear: Extended durability of transmission components.
• IP55 / H Insulation: High-grade protection against dust, water, and heat.
• Heavy Duty Motor, 60% ED Rating: Robust motor for frequent cycle operations.
• Over Heating and Overloading Protection: Built-in safety systems for equipment protection.
• Maintenance Free: Reduced downtime and operating costs.

Design Standards

Gantry crane systems are designed in accordance with ISO, FEM, and DIN norms. Mechanism selections are made in accordance with the desired lifting and running speeds and working class. The box-shaped double beam welding structure increases working space and is easy to transport, install, and maintain. The car adopts the opposite rail cable conductive device. Standardization, serialization, and generalization of parts and components are key design principles. There are two kinds of cable coil type (divided into left and right end) and sliding line type (divided into left and right end) for users to choose. The driver’s cab has a wide field of vision and a linkage console, making operation flexible, balanced, and comfortable. It can also be equipped with a fan, hot air device, air cooler, air conditioner, and walkie-talkie.

Advanced Technology

• Variable Frequency Drives (VFDs): Smooth acceleration and deceleration, reducing wear and optimizing energy consumption.
• Remote Control and Automation: Remote crane control enhancing safety and efficiency.
• Load Sensing and Anti-Sway Systems: Sensors and algorithms prevent load swinging.
• Collision Avoidance Systems: Sensors to detect obstacles and prevent collisions.
• Energy-Efficient Components: Reduced power consumption and operating costs.
• Integrated Diagnostics and Maintenance Monitoring: Real-time monitoring and predictive maintenance.
• Wireless Communication: Wireless data transmission between components.
• Advanced Safety Features: Redundant safety mechanisms, emergency stops, overload protection.
• High-strength Materials and Manufacturing: Enhanced structural integrity and longevity.

Applications

The double girder gantry crane is widely used in open warehouses, factory yards, railway freight stations, port dock cargo areas, steel storage yards, heavy manufacturing facilities, precast concrete plants, and large-scale construction projects for loading, unloading, and lifting heavy materials.

Free Support and Service

Services include main girder fabrication drawing for site making, professional online technical support, and free components supply during the warranty period.