Sand dredgerThe vessel is divided into sections such as the hull, main frame, power, reduction system, underwater excavation part, transmission section, and operational section. The overall width is a few meters, length ranges from 74 to 66 meters, and height is a few meters. The sand pile height is from 6 to a few meters. After multiple practices and improvements, the sand dredging vessel has a high degree of automation, is easy to learn, and requires only a few crew members per shift. The specific steps are as follows: 5. Before starting the machine, check the entire transmission system and machinery lubricants. Then, start the diesel engine for the conveyor belt at the rear, engage the clutch, start the diesel engine, slowly release the clutch, and adjust the speed to normal. Next, start the diesel engine for the front bucket. 6. After both diesel engines are running, adjust the speed to the desired level. Then, release the big arm brake.

Gradually lower it until the sand in the hopper exceeds 6/3. Stop lowering when it reaches 5/3 and then lower the large arm. Stop lowering the large arm when it forms an 87-degree angle with the water surface (about a few meters). At this point, the amount of sand in the hopper is controlled by the traction. When advancing, check the amount of sand in the hopper and be flexible with forward and backward movements. If the sand layer collapses and the machinery struggles or cannot pull, release the traction rope to allow the boat to retreat until it can dig again. If encountering large rocks or clay layers underwater, the boat will experience severe vibrations. In such cases, immediately raise the sand挖掘arm to bypass the obstacle and continue.