解析履带打桩机打滑的原因
Analysis of the reasons for the skidding of a crawler piling machine
在履带打桩机的施工过程中，常常会出现打滑的现象，那么具有是什么原因，下面咱们一起来分析总结。
In the construction process of track piling machine, slip phenomenon often occurs, so what are the reasons? Let's analyze and summarize together.
首先是泥浆或地址的原因，泥浆在重复使用的过程中，在浓度和比重不断增加的情况下，构成浮钻，打桩机钻头放不到孔底，强行加压到孔底后，钻头的转速较快，而泥浆发挥了副作用，润滑了孔底黏土与钻齿的切削面；在泥浆的作用下发作打滑现象，这时可以下降泥浆的比重，钻头到孔底时，手动控制动力头的转数，在每分钟9转慢慢加压。施工地质的不同，打滑现象也不太相同，由于泥岩抗压强度不高，但很质密，遇水就简单打滑，要挑选适合的钻头和钻具，结合熟练的操作经历，一般问题不大。
The first is the cause of mud or address, in the process of repeated use of mud, when the concentration and specific gravity are increasing, a floating drill is made up. The drill bit can not be placed at the bottom of the hole. After the drill is forced to the bottom of the hole, the bit speed is faster, and the mud has played a side effect, and the cutting surface of the clay and the drill teeth is lubricated. In the mud, the mud has been lubricated by the mud. Under the action of the pulp, the skidding phenomenon can decrease the proportion of the mud. When the bit reaches the bottom of the hole, the number of the power head is controlled manually, and it is slowly pressurized by 9 turns per minute. Different construction geology, skid phenomenon is not the same, because of the mud rock compressive strength is not high, but very dense, the water is simple skidding, to select the suitable drill and drilling tools, combined with the experience of skilled operation, the general problem is not large.
其次是钻具和操作熟练程度的原因，由于履带打桩机的钻具与钻杆不同心，钻齿视点小于45度，基地锥不妥排齿过密，钻具严峻磨损都会导致打滑现象；操作人员在钻进中，超挖现象孔底被强行挖平，构成下一钻打滑，钻头在提升时斗门没有封闭彻底，斗内的土许多落入孔底构成打滑；当起转转速过快构成糊钻，操作和钻头的合理选用是处理打滑最基本因素。
The second is the reasons for drilling tools and operation proficiency, because the drilling tools of the crawler pile machine are not concentric on the drill pipe and the drill rod, the drill's view point is less than 45 degrees, the base cone is not properly arranged and the drill tool is badly worn, and the drill tools can cause the skidding phenomenon. In the rise of Doumen, there is no complete closure, and many of the soil in the bucket falls into the bottom of the hole to form skidding; when the rotation speed is too fast to form a paste drill, the operation and the reasonable selection of the drill are the most basic factors for the skidding process.
最终，比如动力头转速过快，没有快慢转速档，或是履带打桩机构造上原因，加压力度不行，以及钻杆长期使用中有必定的弯曲度，都是构成打滑的原因。
Finally, for example, the speed of the power head is too fast, the speed gear is not fast or slow, or the cause of the crawler pile driving mechanism, the pressure degree is not good, and the long use of the drill pipe has certain bending degree, all of which are the cause of the skidding.