DE2433180A1 - FLOATING DREDGE - Google Patents

Description

Dr, F. Zumsteir. sen. - Pr. E. Assmann Dr.R.Koenigsbeiger - Dlp: .- Fhys. R. Holzbauer - Dr. F. Zumsteln jun.

PATENT LAWYERS

TELEPHONE: COLLECTING NO. 22 53 41 ₈ MUNICH 2,

TELEX 529979 BRÄUHAUSSTRASSE 4

TELEGRAMS: ZUMPAT

CHECK ACCOUNT:

MUNICH 91139-809, BLZ 700! 00 80

BANK ACCOUNT: BANKHAUS H. AUFHÄUSER

ACCOUNT NO. 397997. BLZ 700 30600

6 / Li

T049-148

MITSUI SHIPBUILDING AtID ENGINEERING CO.LTD. ,Tokyo

Floating dredger

The invention relates to a dredger that is used for dredging of the deep sea bed is suitable.

So far, the dredging of shallow seas with depths up to 30 m. Generally with suction dredgers operated by pumps or carried out with ships that were equipped with grab tubs. Such suction dredgers or grab dredgers, however, are not sufficient effective and not sufficiently reliable when dredging in deep seas with a depth of more than 60 m.

The aim of the invention is to design a deep-sea dredger in such a way that dail this with the dredging in the deep seabed can perform with great effectiveness and great operational reliability.

409885/0483

With reference to the accompanying drawing, a preferred one is shown below Embodiment of the invention explained in more detail.

Fig. 1 is a schematic side view of a preferred embodiment of the dredger according to the invention; Fig. 2 is a top plan view of Fig. 1; and Fig. 3 shows a schematic section of the excavator and suction unit.

With reference to the accompanying drawing, a dredger D according to the invention comprises a hull 1, which is provided with a recess 1a which is designed so that a barge 2 can be received therein, the is further provided with a pair of pipe brackets 5, each pivotable with a pipe joint 4a with the inlet 4 for the mud provided on the opposite sides of the bow of the hull 1. A link carrier 7 is arranged between the pipe booms and an excavator unit and a suction unit 11 are attached to the carrier 7 hinged. The pipe boom 5 hangs from the winches 9 on girders. Unloading tubes 10 for the dredged sludge protrude above the deck of the hull 1 and are in communication with the holds 8 of the barge 2.

As shown in detail in FIG. 3, the dredging and suction unit 11 has a front sliding shoe 12 and a rear one Slide shoe 13, a sub-water pump 15, which on a platform 14 is attached, a catch bell 16, which with the pump 15 is connected, as well as pipelines 18 connected at one end to the pump 15 and at the other ends of the pipelines are connected to pipe joints 6 at the corresponding ends of the pipe boom 5 and a paddle wheel 17 for Picking up or scooping up the mud, silt or the like from the seabed.

409885/0483

When dredging the seabed with a dredger, the Invention are first .the pipe booms 5, which in the rest position hang down from the V / inden 9, as shown in broken lines in Fig. 1 is shown pivoted about the pipe joints 4a to be lowered into the sea until the dredging and suction unit 11 is positioned on the seabed, as shown in solid line in FIG. Then will the underwater pump 15 and the paddle wheel 17 operated, while the barge 2 in the recess 1a and the dredger D be pushed by a barge 3. The paddle wheel 17 is, during the forward movement, as shown in FIG. 3 is rotated so that the mud, silt or the like scraped up and is introduced into the catch bell 16. These materials are then processed by operating the pump 15 absorbed. Then the mud, silt or the like is through eJnRohr18, Rohraus1 eger 5 and inlets 4 into the interior of the Hull 1 transported and finally in the holds 8 of the barge 2 unloaded via unloading tubes 10.

A dredger according to the invention has the following advantages:

(1) Because the dredger was pushed forward by a tow barge are no propulsion devices for the hull 1 necessary;

(2) Since the pipe booms 5 are connected to the excavation and suction unit 11 by pipe joints 4a and 6, the rotating movement the hull 1 exerted no bending moment on the boom;

(3) Since the dredger and suction unit 11 is always in engagement with the seabed during the dredging process, an effective Discharge can be achieved;

(4) as mud or the like that has accumulated on the seabed is picked up and circulated by the paddle wheel 17 the sludge can nil through the pumpο 15

409885/0483

Sea water to be soaked up.

The floating dredger according to the invention has a hull and a dredging and suction unit that is pulled through the hull and moved on the seabed. mud on the seabed is sucked off by a pump provided on the dredging and suction unit and fed into the hull 1 through pipelines.

40988 5/0483

Claims (1)

24331 Claim Dredger, characterized by a barge, a floating ship having a recess adapted to receive the barge therein is through an opening through which sludge and similar material is discharged into the barge, by pipe booms, which are pivotably mounted on opposite sides of the bow of the ship and in 'connection with the interior of the Stand on the ship, and through a dredging and suction unit that is pivotably connected to the other end of the pipe boom, wherein the dredger and suction unit ein.Uunterwater pump, one Catch bell that with. the pump is connected, a paddle wheel, which is arranged in front of the catch bell opening, and Rohr.1 that connects the submersible pump with the pipe booms, with the dredging of the seabed being carried out by a Pushing movement of the barge and the ship is carried out with a push boat, during which the dredging and suction unit is operated. 409885/0483 Blank page