Hydraulic Backhoe Dredger For Channel Dredging

Hydraulic dredgers are available in two models, the backhoe and the dipper or front shovel.

The first is used most. The difference between those two is the working method. The backhoe pulls the bucket to the dredger, while the front shovel pushes.

The last method is only used when the water depth is insufficient for the pontoon.

ITEM	Boom	Capacity of bucket	Max. dredging depth	Dredging ability		Min. discharging height
(m)	(m)	(m3)	(m)	Crushing capacity (kN/t)	Tearing power (kN/t)	(m)
6.0m	2.55	3.0	6.5	220/22	210/21	5.9
	4.45	2.0	8.3	175/17.5	170/17	6.8
	6.7	1.6	10.5	130/13	120/12	7.8

Due to the anchoring by spud poles and the fixed boom and stick the dredging depth is limited (maximum 25 m).

Some of these types of dredgers are self-propelled.

This dredger is equipped with a Liebherr P996 excavator and can dredge with a 13m³ bucket till approx. 17 m depth.

The dredge can however dredge till a maximum depth of 30m. in case the boom/stick configuration is changed. The maximum penetration/ breakout capacity is 170 tons, the weight of the excavator is 470 tons.

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