driving cap meaning in English

椿帽
打入管用的顶帽
替打桩帽
桩帽

Mechanical impact dynamics is used to analyse the production and spread of stress wave when hydraulic pile hammer hammerblows piles , the stress wave influence the course of driving pile . slender hammer that is equal to wave resistance of the pile can bring ideal stress waveform . when the hammer weight is constant , efficiency of driving pile can be increased by means of selecting drive cap and cushion pad of different rigidity to match the hammer according to various geological condition and the pile . the structure and principium of hydraulic system of double - acting hydraulic pile hammer with double cylinders is studied in detail in the paper , the hydraulic system and electric control system of six - ton - double - actin hydraulic pile hammer with double cylinder is designed on the basis of it
本文应用冲击机械系统动力学分析打桩过程中锤体与桩撞击时应力波的产生、传播以及该波对沉桩过程的影响。认为与桩等波阻的细长状锤体能够产生理想的应力波波形；在桩锤重量一定的情况下，可针对不同的地质情况和桩，通过选择不同刚度的桩帽和桩垫与其匹配来提高打桩效率。本文对双缸双作用液压打桩锤液压系统的结构和工作原理进行了深入的研究，并在此基础上设计出六吨双缸双作用液压打桩锤的液压系统和电控系统。