振宇ZY-600潜孔锤

潜孔锤 技术特点     

（1）施工速度快。一根15～20m 的桩，一般成桩时间40～60 分钟，一天可完成12～15 根左右。     

（2）工艺简单。潜孔锤钻具在空压机、钻机电机带动下，在钻具旋转过程中，同时潜孔锤钻头振动下沉破岩，钻进时对桩周地层产生一定的挤密效应，同时岩渣被空压携至孔口，工艺相对简单，钻进操作方便。     

（3）引孔效果好。采用风动潜孔锤钻进，可控制钻入速度，挤密作用使得引孔孔型较规整；同时，根据预应力管桩设计桩型，选择相应的潜孔锤钻具，引孔直径满足管桩施工，为预应力管桩施工创造条件。     

（4）引孔设备相对简单。引孔机械设备主要为引孔机、空压机和大直径钱孔锤，引孔机采用液压自行系统，不需要另配吊车移位。

Features of DTH drilling:

1. Penetration rate fast as a 15-20 m depth of pile done in time of 40-60 mins, and total of 12-15 pcs of piles can be done in a day.
2. Simple and reliable, DTH hammer bit are designed with a splined drive for rotating the bit in the ground as down the hole forcing the layer and transmitting the flakes onto surface through chipway, with ease operation.
3. Fine well quality, with air DTH hammer penetrate in hole in control manner, the compacting effect make sure the good straightness of hole, and according to the design of prestressed pile, choosing the right drill bit to provide with a fine balance between penetration capacity and bit life, create a good working condition for piling operation.
4. DTH drilling machinery comparative simple as consist of drill string, air compressor and DTH hammer, drill string equipped with hydraulic mechanism for motion, without crane operated.