在各种桩基础施工中，用来钻孔、打桩、沉桩和拔桩的机械统称为桩工机械。桩工机械一般由桩锤与桩架两部分组成。除专用桩架外，也可在挖掘机或起重机上设置桩架，完成打桩任务。桩工机械的主要特点是，专用性强，生产批量小。国外桩工机械主要生产国是日本、德国、美国、俄罗 In the construction of various pile foundations, the machinery used for drilling, piling, piling and pulling piles is collectively referred to as piling machinery. Piling machinery is generally composed of two parts: pile hammer and pile frame. In addition to dedicated pile racks, pile racks can also be set on excavators or cranes to complete the pile driving task. The main features of piling machinery are: strong specificity and small production volume. The main producing countries of foreign pile-driving machinery are Japan, Germany, the United States and Russia.