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The four-rope double-jaw mechanical grab is a highly efficient grabbing device designed for various bulk cargo handling scenarios. It is widely used in ports, power plants, steel mills, mines, and storage yards. This series of grabs adopts a classic four-rope double-drum drive structure, using two sets of steel ropes to control the opening, closing, and lifting of the grab, enabling integrated and continuous operation of grabbing, handling, and unloading. It offers stable operation and strong gripping force, suitable for bulk materials such as coal, ore, mineral powder, grain, and sulfur with a density range of 0.6 to 3.2 tons/cubic meter.
Parameters about the four-rope grab for reference
| Model | SWL (t) | Volume(m³) | Dead Weight (t) | Main Size (mm) | Pulley Dia (mm) | Wire Rope Dia (mm) |
|---|---|---|---|---|---|---|
| EJS3[0.7]1 | 3 | 0.7 | 1.0 | 1434×1927×1849 | φ350 | φ11 |
| EJS5[1.5]2 | 5 | 1.5 | 2.0 | 2000×2659×2576 | φ400 | φ18.5 |
| EJ10[3.6]4.4 | 10 | 3.6 | 4.4 | 2500×3313×3419 | φ520 | φ21.5 |
| EJ16[7]6 | 16 | 7.0 | 6.0 | 3200×3995×4292 | φ560 | φ28 |
| EJ[8]6.2 | 16 | 8.0 | 6.2 | 3200×3995×4064 | φ560 | φ28 |
| EJ[10]9 | 25 | 10.0 | 9.0 | 3200×4304×4636 | φ720 | φ32 |
| EJ[14]14.5 | 40 | 14.0 | 14.5 | 3720×4979×5718 | φ920 | φ40 |
| EJ[17]28 | 70 | 17.0 | 28.0 | 4120×5752×6852 | φ1250 | φ52 |
| EJ[26]35 | 100 | 26.0 | 35.0 | 4670×6041×7076 | φ1450 | φ60 |
Core Advantages of the Four-rope Grabs
Stable structure and powerful gripping: The four-rope double-jaw design ensures even force distribution and strong closing force, suitable for various loose and moderately viscous materials.
Wear-resistant and durable, easy to maintain: Key stress-bearing parts are made of high-strength wear-resistant steel plates, the jaws are replaceable, and the pulley system has lubrication channels for easy daily maintenance.
Wide range of applicable equipment: Compatible with various lifting equipment, including gantry cranes, bridge grab unloaders, and port grab cranes.
Complete range of models: From small tonnage to heavy loads, and from lightweight materials to heavy ores, corresponding models are available, and customized configurations are supported.
Typical Application Scenarios of the Four-rope grabs
Ports and Terminals
Widely used in the loading, unloading, and transfer of bulk cargo such as coal, iron ore, fertilizers, and grain at ports and terminals. The grab bucket features a robust structure capable of withstanding high-frequency, high-intensity continuous operation, thereby improving terminal throughput efficiency.
Power Plants and Steel Mills
Suitable for stacking and reclaiming operations in coal yards, as well as the transfer and handling of raw materials such as iron ore powder, coke, and scrap steel. The grab bucket design balances gripping force and closing force, effectively handling materials of varying densities and forms.
Mining and Quarrying
Used for loading, unloading, transferring, and transporting materials such as sand, gravel, cement, slag, and various ores. Wear-resistant materials and a reliable structure ensure durable and stable operation under harsh working conditions.
Grain and Storage Logistics
Suitable for warehousing, handling, and loading lightweight bulk materials such as grains, beans, and animal feed. The grab bucket closes tightly, reducing spillage and helping to maintain a clean working environment and minimize material loss.
Other industrial applications of the four-rope clamshell grabs:
It can also be used in waste treatment plants, construction waste transfer stations, and other locations for the grabbing and transfer of solid waste, demonstrating its versatile adaptability.
ENJUE Service and Support
We provide full-process technical support, from model selection consultation and drawing coordination to installation guidance and after-sales maintenance.
Based on the user's actual working conditions, material characteristics, and crane parameters, we recommend the most suitable grab model and provide lifecycle services such as wear part replacement and structural inspection.
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