Description
The four-rope grab is mainly used with bridge or gantry cranes with two sets of lifting drums to grab all kinds of loose deposits, and perform operations such as loading, unloading, and transferring materials. Mainly supporting double girder bridge crane or double main girder gantry crane.
According to the type of material and user requirements can be designed with teeth, parallel beam opening, underwater operation and other forms. Because the size of the bucket part of the grab is different, the capacity of the material captured is different, we usually divide the grab into four grades: light, medium, heavy and super heavy.
Features
1.High Stability
Four-rope grabs evenly distribute the load through four lifting ropes, providing greater stability. This helps reduce sway during lifting and tilting operations, ensuring a safe process for hoisting and handling.
2.Excellent Load Balancing
Four-rope grabs can grip cargo evenly, spreading the load and preventing tilting or uneven pressure. This contributes to cargo protection and reduces damage caused by unbalanced loads.
3.Efficient Handling Capability
Due to their stability and balance, four-rope grabs can efficiently handle various types of cargo, including bulk materials, construction materials, and waste. This enhances the efficiency of engineering and construction projects.
4.Lower Maintenance Costs
Four-rope grabs typically have relatively low maintenance costs because of their simple design and reduced susceptibility to malfunctions. This can lower equipment operating costs and extend its service life.
Technical Data
List of material grabbed by various grab buckets
|
Grab type |
Grab material |
Material capacity weight(t/m³) |
|
Light |
Coke, slag, cereals, potatoes, medium anthracite lime, cement, soil, gravel, clay, broken brick, etc |
0.5~1.2 |
|
Medium |
Peat, large anthracite, compacted coal, clay, limestone, crushed stone, salt, gravel, brick, bauxite, flake iron oxide scale, cement, sand and brick in water, etc |
1.2~2.0 |
|
Heavy |
Limestone, heavy clay, medium and small ores, hard stones, rod-shaped iron oxide scale, iron ore, lead concentrate powder, etc. |
2.0~2.6 |
|
Super heavy |
Large ore, large manganese, sedimentary agglomerated lead ore powder, etc. |
2.6~3.3 |
|
Model |
Volume |
Material proportion |
Pulley ratio |
Pulley diameter |
Steel rope diameter |
Opening and closing time |
Grab weight |
Equipped with crane tonnage |
|
U1 |
1 |
>1.8-2.9 |
5 |
Φ350 |
Φ14-16 |
11 |
2.1 |
5 |
|
U2 |
1.5 |
>1-1.8 |
5 |
Φ350 |
Φ14-16 |
12.5 |
2.25 |
5 |
|
U3 |
2.5 |
>0.5-1 |
3 |
Φ350 |
Φ14-16 |
8 |
2.38 |
5 |
|
U4 |
2 |
>1.8-2.9 |
5 |
Φ500 |
Φ18-20 |
15 |
3.94 |
10 |
|
U5 |
3 |
>1-1.8 |
5 |
Φ500 |
Φ18-20 |
15 |
4.4 |
10 |
|
U6 |
5 |
>0.5-1 |
3 |
Φ500 |
Φ18-20 |
10 |
4.6 |
10 |
|
U7 |
3 |
>1.8-2.9 |
5 |
Φ610 |
Φ21.5 |
15.3 |
6.4 |
15 |
|
U8 |
4.5 |
>1-1.8 |
5 |
Φ610 |
Φ21.5 |
17.3 |
6.98 |
15 |
Applications
Construction engineering, mining, port logistics, metallurgical industry, waste treatment, forestry, agriculture, water conservancy and energy
Service
2. Providing customized product solutions based on different working conditions, temperature, type, voltage, etc.
2. Replacement of damaged components (non-human-induced) is provided during the warranty period.
2. Safety and Compliance Support: Ensure that their products comply with local and international safety and regulatory standards, and provide relevant documentation and support.
2. We will send professional Chinese crane installation team or find local crane installation team according to the product plan and customer demand, to ensure that the product can be used safely and effectively.