What Is a Grab Crane? And How Many Types of Grabs Are There?

The grab bucket is a device that opens and closes the jaw plate to grasp and remove bulk or lengthy materials. The crane driver's gripping and unloading actions, which are usually performed indoors, do not require support workers to assist, avoiding heavy manual labor, saving auxiliary time, and considerably increasing loading and unloading productivity. In the port, yard, and bulk material warehouse, the grab bucket crane is commonly employed and designed by Grab Bucket EOT Crane Manufacturers  .

The many varieties of grab buckets can be classified based on the volume density of the grabbing materials.

1. P1.2t/m3 (light)

2. P=1.22.0t/m3) is a medium (P=1.22.0t/m3).

3. P=2.02.6t/m3) (P=2.02.6t/m3) (P=2.02.6t/m3) 

4. Extra-heavy (P>2.6t/m3) type

Because these four various types of grab buckets are designed to respond to varying volume density materials, the weight of the grab bucket varies greatly even though the capacity is the same.

Grab a Single Rope| Grab a Single Cable

For cranes with only one lifting drum, the single rope grab is appropriate (single hook). It can be opened and closed at will for loading and unloading materials. Single cable grab cranes are simple to use. It can be utilized for material grabbing and transferring both underwater and on land.

Grab a Double Rope

The double rope grab is designed for cranes with a double lifting device structure, which are commonly employed in the building of ports, docks, and bridges. For various loose accumulations, choose light, medium, heavy, or over-heavy varieties of grabs based on material qualities.

Grasp four ropes

The four cable grab is typically used in conjunction with bridge or door cranes that have two groups of lifting drums to capture various loose accumulation for loading and unloading, store transfer, and other applications. Serial product types such as toothed, parallel cross beam opening, and underwater operations can be created based on material circumstances and client requirements.

Grab a plate with two jaws-

The double jaw plate grab has a new shape and logical construction, with a rate of 1.5-1.92 between grabbed material and dead load, and a filling degree of 95-100 percent, making it an appropriate grab for loose granular materials. The product has the following qualities when compared to the standard four-cable grab: The through beam is built with a simplified structure, high strength, and low dead load; the main swivel's lining material is bearing steel, which has a 4-5-fold service life. To enforce impulse force and abrasion strength, the cutting edge sheet is fused using overlapping techniques. To prevent dust and water from entering the chain wheel during underwater operation, multi-lay techniques are used.To keep the work area clean, the commissural clearance between cutting edge sheets can reach 0.3-1mm. With two cables, the construction is difficult to distort or stagger the type of hold but can be designed by Foam Grabber Crane Manufactures.

Grab Bucket with Scissors

When two jaws close the swivel, the scissor grab bucket opens by releasing the steel cable of the chain wheel near the scissor arm and frapping the bearing steel cable, and when it closes, it flips the steel cable of the chain wheel group. Increasing force via lever concept to bring jaw close to grasping material, whose closing force moment rises as it closes, allowing it to catch items entirely without leakage and being mostly utilized on huge bridge ships that are unloaded.

Grab bucket using an electric motor

The electric motor grab is mostly used on cranes with their own switching mechanism to load and unload materials at any height. Its productivity is higher than that of a single-cable system, and it is simple to use with good load and unload efficiency. It can be used to grab a variety of loose accumulations. Cable winders are added for energy conveyance throughout the operation of the grab, depending on the lifting height.

Also Read:- What Are the Different Type of Grab Bucket Eot Cranes

Grab Bucket with Multiple Valve

The multi valve type grab bucket is primarily utilized to efficiently load and discharge significantly wasted steel products under dreadful conditions. It is widely used in ports, railways, metallurgy, mining, and construction. Its structure is divided into four categories: single-cable, double-cable, four-cable, and electric. The jaw can open and close in response to material shapes and sizes in order to assist in the grasping of large materials. The jaw can be designed by Grab Bucket Crane Manufacturers  with 48 valves depending on material sizes and client requirements.

Grab Bucket for Grabbing Wood

The wood grab is primarily used to load, barge, log raft load trucks, and unpeel in wood markets, large wooden products factories, and papermaking plants, among other places. Its structure includes single-cable, two-cable, four-cable, and electric types, and it can also be designed by  Grab Bucket EOT Crane Manufacturers.

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