Grab crane grab type selection method

The grab bucket that crane matchs has a lot of kinds.

According to the use of grab crane grab bucket is divided into single-rope hanging grab bucket, two rope grab bucket, four rope grab bucket, four rope pie grab bucket, electric motor grab bucket, stainless steel grab bucket, hydraulic multi-flap grab bucket, scissors grab bucket, log grab bucket and electro-hydraulic grab bucket.

According to the proportion of grab material, all kinds of grab bucket are divided into light grab bucket, medium grab bucket, heavy grab bucket and super heavy grab bucket.

Before selecting the grab type, it is necessary to confirm the working environment of the grab, the object to be grasped, the cubic number of the object to be grasped at one time and the proportion of the material, as well as the crane tonnage used for the grab.

Then according to the crane information to determine which type of grab.

After confirming the type of grab, it is necessary to confirm the opening direction of grab, which is perpendicular to the crane girder or parallel to the crane girder.

First, according to the grab crane use preliminary selection

Single rope suspension grab is used for only one lifting drum, used for all kinds of ordinary cranes, used to grab all kinds of loose materials, the most suitable for launching operations.

Two-rope grab is mainly used in conjunction with bridge cranes, port machines and reaming trucks. It is widely used in ports, power plants, docks and chemical industries to grab all kinds of loose deposits, such as ore, coal and slag, etc. for loading, unloading and charging operations.

The four-rope grab is mainly used in conjunction with bridge and gantry cranes with two sets of hoisting rolls to grab all kinds of loose materials for loading, unloading and stacking.

According to the grab materials and use needs can be designed with teeth, parallel beam open underwater operation and other forms.

The four-rope para-type grab bucket is mainly used to grab loose materials with small particle size.

Good dust and water resistance, small gap between edge plates, generally suitable for ports, docks, freight stations, grab coal, grain, slag and other loose materials.

Electric motor grab is mainly used for ore, limestone, slag, ore powder, coal, coke and other loose granular material loading and unloading work.

No launching operation.

If outdoor work, to add rainproof facilities, not flammable, explosive, acid, alkali vapor environment work.

Stainless steel grab is specially designed for brewing, mainly used to catch and transport koji material, sauce, sauce residue, etc.

Multi-disc clamps are suitable for loading and unloading scrap steel and iron bulk materials and garbage efficiently under various harsh environments. They are mainly used in ports, railways, metallurgy, mining, construction and other industries.

Shear-type grab grab material when clean and non-leakage, suitable for cleaning the yard and cabin, closed with the closure process gradually increase, mostly used in large bridge unloading machine.

Log grab is used to grab the log long pole special grab, log grab is suitable for ports, forest farms, wood farms, wood products factories, paper factories and other industries, loading, unloading, unloading, tying row, piling and other operations.

Electro-hydraulic multi-disc grab bucket is suitable for the harsh environment, grasp the material irregular, difficult material.

Mainly used for scrap iron, pig iron, stones and other irregular bulk cargo loading and unloading, suitable for steel mills, waste incineration treatment, port, railway transit and other occasions.

Two, according to the grab material selection grab crane type

Bulk density table for loose materials

Grab all kinds of material table

Note: after the selection of grab type, it is necessary to confirm whether it is suitable for the crane.

Method of confirmation: first, confirm the rated lifting weight of the crane equipped with the grab bucket, the self-weight of the grab bucket, the self-weight of the grab bucket plus the weight of the grab material can not exceed the rated lifting weight of the crane, otherwise re-selection.