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Grab Dredger

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Grab steel marine dredgers
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-136

A grab dredger picks up seabed material with a clam shell bucket, which hangs from an onboard crane or a crane barge, or is carried by a hydraulic arm, or is mounted like on a dragline. This technique is often used in excavation of bay mud. Most of these dredges are crane barges with spuds. The grab dredger is the most common used dredger in the...

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Custom grab chain dredger price
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-137

Grab dredger is widely used in some specific Dredging Engineering. Grab dredger is non self propelled ship to shift through the dispatch tug; construction operations aboard a submarine, mining machine grab grab river bottom silt, sand, garbage and other debris, transferred to the mud barge, and then through the mud barge transport relief to a...

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Grab marine dredger design
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-135

Grab dredger using a rotary boom and rope dredger to hang buckets; grab its own weight in the role, crawl into the seabed soil. Then start fighting rope winch, skip rope through the pulley at the top of the boom, will grab off, then turn the dredge rises to a predetermined point (or mud barge) to remove the mud. Dredging and excavation sites...

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Steel marine grab dredgers
  • Brand: UniSite
  • Packaging: bulk package and bulk vessel transportation
  • Min. Order: 1 Piece/Pieces
  • Certificate: CCS/ISO/BV
  • Model No.: USA-134

Grab dredger divide into self-propelled and non self propelled . Self propelled generally hopper belt, mud tank filled from airlines to mud area dumping; non self propelled by mud barge clay loading and unloading mud: use of wire rope grab dredger, relying on the action of gravity, into the water to a certain depth, by the insertion of a mud layer...

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China Grab Dredger Suppliers

Grab Dredger is self-propelled and non self propelled two. Self propelled generally hopper belt, mud tank filled from airlines to mud area dumping; non self propelled by mud Barge clay loading and unloading mud: use of wire rope Grab Dredger, relying on the action of gravity, into the water to a certain depth, by the insertion of a mud layer and a closed grab to mining and grab sediment, then through the manipulation of ship crane mechanical lifting grab out of the water, swing to a predetermined position the sediment discharge into the hopper or mud barge, and so forth. Grab dredger for waterway and harbor pool, and water infrastructure dredging work. Suitable for mining silt, gravel and clay, but it is not suitable for mining sand and silt.

Photo of our Grab Dredger:

Grab Dredger


principle

Dredging using wire rope grab, rely on the action of gravity, into the water to a certain depth, by the insertion of a mud layer and a closed grab to mining and grab sediment, then through the manipulation of ship crane mechanical lifting grab out of the water, swing to a predetermined position the sediment discharge into the hopper or mud barge, and so forth.

classification

Grab dredger is self-propelled and non self propelled two. In general, the tank is filled with mud, and the mud tank is filled with dump mud from the air to the dump area.

Key points of construction technology control

Transverse excavation method construction

Grab dredger for horizontal excavation. Operation timed assigns 5 mooring, main anchor cable length should be 200 to 300 meters, the anchor tail length should be 200 to 300 meters, high velocity of poor quality long timely. The edge should be thrown in mooring line outside the 100 meters. Near point positioning, anchored procedures and chain bucket ship basically the same.

The concurrent and countercurrent construction

Grab dredger should adopt concurrent construction. When the flow rate is not large or there is a reciprocating flow, it can be used as a counter current.