Dual Girders Working in Tandem, Worry-Free Heavy Lifting: A Product Analysis of Shandong Xingyuan Machinery's MG Type Double-Girder Gantry Crane

In ports and docks, railway freight stations, large-scale open-air stockyards, and water conservancy projects, the loading/unloading and transfer of heavy materials impose stringent demands on equipment stability and load-bearing capacity. Drawing on nearly two decades of crane manufacturing experience, Shandong Xingyuan Machinery Co., Ltd. (hereinafter referred to as "Xingyuan Machinery") has meticulously engineered the MG type double-girder gantry crane. With "double-girder structure, large span, and heavy load capacity" as its core advantages, this product is a reliable choice for outdoor handling scenarios involving all types of ultra-heavy and ultra-long materials.

Product Definition: The "Steel Backbone" for Outdoor Handling

The MG type double-girder gantry crane, commonly known as the "heavy-duty gantry crane," is the flagship product in Xingyuan Machinery's hook gantry crane series. This model adopts a double-girder box-section structure, with overall rigidity far exceeding that of single-girder models, making it particularly suitable for open-air material yards, railway dispatch stations, ports and docks, and large equipment assembly workshops.

Core Advantages: Four Highlights Forging Reliable Quality

1. Box-Section Double-Girder Structure: Rock-Solid Stability

The MG type adopts a box-section double main girder design, offering higher bending rigidity and torsional resistance compared with single-girder or truss structures. The "gantry"-shaped framework formed by the main girder and legs is stable, complemented by A-type or L-type leg designs for rational load distribution and strong wind resistance. Main welds are executed using automatic submerged arc welding and undergo 100% ultrasonic flaw detection to ensure structural safety.

2. Dual Hook Coordination: Purpose-Built for "Long Materials"

Targeting the handling pain points of ultra-long materials such as pipes and steel structures, the MG type can be configured with a dual hook coordinated operation solution:

An electromagnetic hanging beam or specialized lifting attachment is suspended beneath the dual hooks, achieving "surface-contact" adhesion.

Avoids the collision damage to materials caused by traditional wire rope lifting.

Significantly improves loading/unloading efficiency and reduces vehicle dwell time on site.

3. Modular Design: Convenient Transport

Key components such as the main girder and legs use flange connections, facilitating long-distance transport and on-site installation. The bridge and trolley traveling mechanisms adopt a "three-in-one" drive (motor + reducer + brake integrated), featuring a compact structure and low maintenance costs.

4. Multiple Safety Protections

Variable Frequency Speed Control: Achieves soft starting and soft stopping, ensuring smooth operation.

Overload Limiter: Real-time monitoring of the lifted load; automatic alarm activation and circuit cutoff in the event of overload.

Wind and Anti-Slip Protection: Optional rail clamps enhance outdoor wind resistance.

Operation Methods: Cabin / Wireless remote control / Ground pendant, flexibly configurable.

Selection Guide

Define Operational Requirements: Lifting capacity, span, lifting height, daily operating frequency

Assess Site Conditions: Rail foundation bearing capacity, power supply method, outdoor/semi-outdoor

Determine Work Duty Classification: A6 or above is recommended for frequent operations

Specify Load-Handling Device: Hook / Electromagnetic lifter / Grab / C-Hook

Select Operation Method: Cabin + remote control is the recommended configuration