挖沙船具有成本低、工作效率高、操作方便等特点，可同时完成对沙石的抽取、过滤筛选及分离等工序。可以一次性生产出合格的产品，尤其针对水面宽阔且水下资源丰富的河道、池塘及废弃的挖沙厂更是特别的适合采用挖沙船进行挖沙作业。挖沙船的种类很多，从挖沙方式上可分为机械挖沙和吸扬式挖沙两大类。挖沙机械比较笨重，不像其他小型机械那样灵活，润滑油可以使挖沙船的各部件能够更好的协调运行，因此我们更加要注意润滑油的选用。

      如果在火灾或者爆炸事故易发的地段作业，挖沙船一定要使用抗燃性好的润滑剂，不能使用易燃的机油或者柴油代替润滑油。同时润滑剂必须对挖沙船的密封件有着良好的适应性，以防止密封件受到润滑剂的氧化损坏。

   Dredging boat has the advantages of low cost, high working efficiency, convenient operation and so on, and it can complete the process of extracting, filtering and separating sandstone. Can produce a one-time qualified products, especially for the water wide and underwater resources of the river, pond and abandoned sand digging plant is particularly suitable for dredging sand work. There are many kinds of dredging sand, which can be divided into two categories: mechanicaldredgingandsuctionsuckingsanddigging.Sanddigging machinery is more bulky, unlike other small machinery as flexible, lubricants can make the parts of the dredgingboatcanbebettercoordinatedoperation,soweshouldpayattentiontotheselectionoflubricants.