Structure Design And Energy Saving Characteristic Research For Double Driving Heads Of Drilling Machine

With that “One Belt and One Road”(Land Silk Road and the Maritime Silk Road)of the Strategic Project, the domestic pile foundation construction will be rapid development, of course, the requirements of pile foundation construction machinery will also be substantially improved. In today’s economic construction has been rapid development, pollution and a lot of energy consume question is increasingly causing concern, therefore saving and environmental protection requirements will continue to increase. In recent years, with the increase of urban metro and light rail, high-speed railway and highway, railway stations airport terminals, both inside and outside of buildings and other construction in the city construction of deep foundation construction machinery requirements are also rising,especially those with energy saving features of the large-diameter construction equipment emergency to be resolved. The issue mainly for the domestic large-diameter drill deep foundation exist slagging is poor, pollution, energy consumption and many other issues,research needs and resolve to meet the energy saving drill actual production and construction problems of dual power head, explore effective construction methods, design a new type of structure, improve the effect of slag, improve construction efficiency, energy-saving construction, energy efficiency to achieve new goals. research and development applied to the hole diameter larger than or equal to 800 mm diameter deep foundation construction of key equipment.This paper describes the double rotary drilling machine drilling holes into the mechanism and slag pile mechanism, discusses the drilling process and the whole slag construction method analyzes the theory and DTH drilling hard rock crushing crushing mechanism. Separate double rotary drilling machine by connecting the spiral casing combination drilling and DTH drilling outer tube assembly so that it has strong adaptability, when faced with complex geological contain pebbles, boulders and even hard rock when can replace DTH drill. The new double-wall drill hole to make the pile after a specified depth, can be made within the drill hole, pouring concrete side edge to drill, concrete fills the hole, into the pre-programmed steel cage, the last extubation pile.According to the Twelve-Five science and technology support program, the actual construction requirements and practical problems already in existence specifically for hybrid head design studies, and specific structures inside and outside the power head it is described,for energy saving and environmental protection of the core components of the blowout preventer. It is discussed in detail. Through key components for hybrid head Solid Works solid modeling and internal and external power head of the finite element analysis, to verify the reliability of the key components of strength.Through the single large diameter DTH drill with double-walled design and supporting joint research, external casing drill specific structural design. For “Anti- Positive- Anti” intake,slag, grouting work process, double-wall drill pipe, inlet fitting slag concrete structures elaborate explanation. Respectively inlet connector, double-wall drill pipe, the role of the inlet connector and works slag were discussed.This article also describes the major turbulence model and its advantages and disadvantages,solid-gas two-phase flow through the delivery of theoretical analysis to establish the ideal theoretical model. This article is designed for the composition of dual power drill head and intake slag grouting process, a detailed discussion and explanation. Using fluent software for intake and slagging process simulation analysis, to explore a reasonable amount of intake air and the penetration rate matching relationship. It explains how to achieve energy saving and environmental protection, and is derived by calculating the energy-saving features of the blowout preventer by theoretical analysis.