Bulk Material Handling Expert: Shandong Xingyuan Machinery's MZ Type Double-Girder Grab Gantry Crane

n industries such as ports and docks, mines and quarries, steel metallurgy, and building materials and chemicals, the loading/unloading and transfer of bulk materials such as coal, ore, mineral powder, and coke constitutes a high-intensity operational task. Drawing on its deep expertise in the crane manufacturing field, Shandong Xingyuan Machinery Co., Ltd. (hereinafter referred to as "Xingyuan Machinery") has meticulously engineered the MZ type double-girder grab gantry crane. With "double-girder structure, grab attachment, and high-efficiency handling" as its core advantages, this product is a reliable choice for operations in all types of bulk material open-air storage yards and fixed-span areas.

Product Definition: The "Grabbing Expert" for Bulk Material Handling

The MZ type double-girder grab gantry crane, commonly known as the "grab gantry crane," is an important member of Xingyuan Machinery's gantry crane series. This model adopts a double-girder box-section structure, equipped with a double-drum four-rope grab as its load-handling device, making it particularly suitable for grabbing, loading/unloading, and transfer of bulk materials in open-air stockyards and material yards.

Core Advantages: Four Highlights Forging Efficient Loading and Unloading

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

The MZ type adopts a box-section double main girder design, with overall rigidity far exceeding that of single-girder models. The "gantry"-shaped framework formed by the main girder and legs is stable, complemented by A-type leg design 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 and reliability.

2. Four-Rope Grab: High-Efficiency Grabbing

The MZ type crane is equipped with a double-drum four-rope grab, with the hoisting mechanism and grab opening/closing mechanism achieving coordinated control:

High Grabbing Efficiency: High grab ratio, with particularly excellent grabbing performance for materials with a particle size of less than 100mm.

Flexible Operation: The grab can open and close at any height, without the need to lower to a specific position.

Broad Material Adaptability: A standard grab or toothed grab can be selected according to material characteristics.

3. Strong Overall Rigidity: Superior Torsional Resistance

Compared with single-girder models, the double-girder structure offers higher bending rigidity and torsional resistance, performing particularly well under large-span and heavy-load conditions, effectively reducing load sway and enhancing operational stability.

4. Heavy-Duty Work Classification: Purpose-Built for High-Frequency Operations

The MZ type crane achieves an overall work duty classification of A6 (Heavy Duty), specifically designed for continuous, high-intensity operations:

All mechanisms are selected according to high-intensity usage standards.

Extended service life of motors, reducers, and wheel assemblies.

Suitable for bulk material handling scenarios with frequent daily operating cycles.

Market Applications

Xingyuan Machinery's MZ type double-girder grab gantry crane has been widely deployed across numerous bulk material handling scenarios. Leveraging its superior product quality and professional technical services, the company recently won the bid for the crane equipment operation and maintenance services for the Guoneng Changzhou 2×630MW Longyuan Qide Sludge Treatment Project, demonstrating the company's professional strength and market recognition in the field of grab-type lifting equipment.