Item specifice

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Designed、fabricated and inspected by our Wei Hua Group, the bridge-type grab ship unloader is accorded with the foreign advanced standards and latest national standards such as DIN、FEM、IEC、AWS and etc. It is suitable for unloading DIN、FEM、IEC、AWS operation for bulk ship at bulk cargo.

Materials mainly contains ore、coal and etc. The capacity of the unloading bulk is from 500t/h to 3000t/s, which has the performance of advanced technology, reliability, stability, efficiency, long service time and easy maintenance. It can meet with the requirements of Max.transportation volume, high efficiency operation. The noise and sust pollution produced during operation conform to national environment protection standard four-drum pull type grab ship unloader designed and fabricated by Weihua Group prevail in market.

In the light of the various drive mode, it can be divided into two types: trailer wagon with rope and self-propelled trolley. What’s the drive mode of the trolley is that in line with the steel wire rope that is on the drive coiling block in the machine room, it can realize traveling of the trolley. The traveling drive device of the trolley is not on the trolley, on the contrary, it is in the machine room. The lifting mechanism of the grab has two conditions, such as it is equipped on the trolley or it is not equipped on the trolley.

The bridge-type grab ship unloader that the lifting mechanism is not equipped on the trolley: generally speaking, the trolley is made up of main trolley system and auxiliary trolley system. The advantages of the bridge-type grab ship unloader includes following characteristic: such as simple structure of the trolley, light dead weight, high traveling speed, stable brake and starting. It is widely used in large and medium-sized ship unloaders. The main trolley system and auxiliary trolley system is effective for rope compensation, which can realize the horizontal movement of the grab.

The bridge-type grab ship unloader that the lifting mechanism is equipped on the trolley: it is named as semi-trail type bridge-type grab ship unloader. The drive mode of the trolley depends on the electric motor which is equipped on the trolley frame. By means of the reduction gear, it can directly drive the wheels of the trolley to realize the traveling of the trolley. Both lifting mechanism and opening-closing mechanism are equipped on the trolley. Also, it is named as load trolley. 

Technical specification

FAQ

What is the production common efficiency of the bridge-type grab ship unloader?

The bridge-type grab ship unloader is a kind of professional equipment for handling bulk material, which is suitable for bulk operation, such as coal, coke, iron ore, limestone, sand,clay and etc. General rated production efficiency of the bridge-type grab ship unloader ranges from 300t/h~3000t/h. It can realize semi-automated and automated operation.

How many classification groups do the bridge-type grab ship unloader have?

In reality, the classification group of the bridge-type grab ship unloader refers to the working service, which is depended on the circle index in the service life of the whole machine. The bridge-type grab ship unloader is a kind of professional equipment which purpose is handling efficiency with quite working frequency. The time of circle index can reach 70~80 in one hour. Commonly, the working classification is A8.

How many dust pelletizing systems do the bridge-type grab ship unloader have?

Generally speaking, the bridge-type grab ship unloader is suitable for bulk material operation. In the course of the unloading of bulk materials, it will kick up a dust. It needs to equip the dust pelletizing system. The dust pelletizing system of the bridge-type grab ship unloader has two methods, such as dry dust removal and wet dust removal.  

How many drive modes do the bridge-type grab ship unloader have in line with trolley drive mode?

In the light of the various trolley drive mode of the bridge-type grab ship unloader, it can divided into two pattern, such as bridge-type grab ship unloader with rope trolley and bridge-type grab ship unloader with self-traveling trolley. 

Which performance feature do the bridge-type grab ship unloader which is designed and manufactured by our company have?

It is applied to all kinds of harbors and bulk terminal cargo. It has a well-adapted size of the bulk particle. By means of changing grabs, it can adapt bulk ship which loads various density and particle bulk.

It adopts vector frequency, PLC controlling and speed regulation, moment balance key controlling technology, CMS intelligent monitoring and management system. It can monitor traveling status of all equipment in live.

It adopts electric energy feedback, intelligent optimization controlling technology, which has following advantages, such as energy conversation and environment, raising efficiency, well-adapted hatch. And, it will no be influenced by the flood fall.

The electric anti-sway system is chose with good effect and reliability and safety.

It has a mature type. The structure of the mechanism is simple and it has small workload. The front crossbeam can realize 80°pitching function, which is convenient for ships to move in and out of the harbor.

The allocation of the bridge-type grab ship unloader adopts four coiling block. The compound motion of the lifting coiling block and opening-closing coiling drum shapes trolley traveling. The ting of the rope is simple with low consuming of the rope, light dead weight of the trolley and reliability and stability.

It has kinds of safety precautions, such as alarm for strong wind dynamic scanning for safety and etc.