Sand dredgerThe ship is divided into several main sections: hull, main frame, power, reduction system, underwater excavation, conveyance transmission, and operation sections. The overall width is several meters, length ranges from 74 to 66 meters, and height is a few meters. The sand stacking height is from several meters. After multiple practical applications and improvements, the sand mining ship has a high degree of automation, is easy to learn and operate, and requires only a few crew members per shift. The specific steps are as follows: before starting, check the entire mechanical transmission system and machine lubricants. Then, start the diesel engine for the conveyor belt, disengage 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. After both diesel engines are running, adjust the speed to the required level. Finally, release the big arm brake.

Gently lower it until the sand in the hopper exceeds 6/3, then stop. Wait until it reaches 5/3 before extending the large arm. Stop extending the large arm when it forms a 87-degree angle with the water surface (about a few meters). At this point, use traction control for the amount of sand in the hopper. When moving forward, check the sand amount inside the hopper and be flexible in forward and reverse movements. If the machine struggles or cannot move due to a collapsed sand layer, release the traction rope to allow the boat to retreat until it can be dug. If there are large rocks or clay layers underwater, the boat may experience severe vibrations. In such cases, immediately lift the sand-dredging arm to bypass the obstacle before continuing.