ISO Standard 50t High Efficiency Grab Dredger Boat

Company introduction:  Weihua Group started from a humble operation in June 1988 and grew to a sizable enterprise group specializing in researching, developing and producing lifting machinery, port machinery, construction-purpose tower crane, reducer,etc.

After over 20 years of hard working, the company has become one of size enterprise group with the largest production and sales volume and the most influential brand in China’s crane industry. The production and sales volume of leading product ranks first. There are 22 subsidiaries with more than 6000 employees within the group. Among them, there are more than 1600 staffs with college degree or above. Weihua occupy a total production area of more than 1,900,000 square meters, the total asset is about 3.3 billion RMB, register capital 166 million RMB. With the kiloton overhead and gantry crane manufacturing capacity, an increasing number of crane are serving in machinery manufacturing, metallurgy, petrochemical industry, mining, energy and transportation, port logistics, automobile manufacturing, shipbuilding and other fields. Hundreds of cranes have been exported to more than 20 countries like Great Britain, America, Russia, Turkey, Brazil, Vietnam, Thailand, India, Iran, Pakistan, and Oman and so on. In FY2010, our total sales reached a history-high 3.62 billion RMB.
         Weihua Group has been honored with more than 300 awards like ‘Machine 100 China’, ‘National Creditable Enterprise’, ‘National Quality Management Advanced Enterprise’ etc. Our overhead traveling crane and gantry crane are awarded 'China Top Brand ', 'Weihua' trademark was awarded 'China Famous Brand ' Weihua Group also serves the Heavy Machine Industry Association, Material-Handling Machine Association and Bridge Crane Sub-association of China as Deputy Chief Director.

        Weihua Group owns the only crane R&D center in Henan Province and 76 patents. In 2007, Weihua Testing and Inspection Center was awarded National Laboratory, 2008, Weihua Group was named “innovative pilot enterprises in Henan Province” and  “'National Intellectual Property Pilot Unit”; 2009, Weihua Group was named 'National High-tech Enterprise ', '“Top 100 Best Chinese Employer”; 2010, Weihua Group was regarded as “national technology center” and “Postdoctor R&D station’. Weihua will keep on improving the R&D and innovation capacity.
       Weihua Group is committed to 'Becoming the leader in China lifting equipment companies & international famous brand” and open a new chapter in the history of crane production with its continuous efforts and in pursuit of greater core competitiveness.

Product introduction:

Grab dredger boats are used for dredging sluges in waterways, harbors, lakes etc.as dredge and drainage engineering ships.

The grab dredger boat mainly consists of hoisting mechanism, luffing mechanism, slewing mechanism, rigging hook device, A-frame, rotating platform, rotating support, booms and grab buckets.

There are several control systems provided to improve dredging efficiency and accuracy as following (including but not limited to):

1. PLC and visual simulation system 

PlC system can greatly improve and facilitate operation of speed control and halt with load in the mid-air. 

Visual simulation system is able to achieve visualization and intellectualization in depthkeeping digging and horizontal digging.

2. Depthkeeping digging system
This crane is provided with depthometer, according to which the operater is able to set dredging depth to improve

 the dredging quality and avoid wast of overexcavating.

3. Satellite positioning dredging construction management system

This system is is used to indicate location of the hull and working track of the grab bucket anywhere and anytime

 to ensure high efficiency and accuracy of dredging construction quality.

4. Horizontal digging control system
This system is able to store several kinds of grab working processing program and provided with manual input  

type depth correction function. Thus smooth working faces are able to achieve.

5. Depth correction system
While working , the grab may be affected by dredger slewing, luffing hull tilting. The depth conrrecion system can 

revise the tolarance. 

The grab buckt linked with wire rope goes down into the earth by its deadwight and closes to grab target materials. 

Then the grab bucket lift up to a rated height and slews to the target.after offloading cargoes, the grab buckt slews back to

the above of dredging point for next circuit. 

Technical parameters: 

 Sketch: