Design And Simulation Analysis Of Salvage Drill Structure

Rotary drilling rig is piling machinery A foundation construction commonly used in large-scale operation into the hole, mainly for use in rotary drilling pile construction. On the basis of the construction of urban construction, elevated bridges, large buildings such as the application of rotary drilling machine is widely used. Is a new construction technique green Pile, the construction process has low noise, low environmental pollution, construction safety,high efficiency, good quality and complete flexibility, the use of sex and other characteristics.In recent years, China’s economy, politics and culture have not had a lot of development, with the urbanization process has gradually accelerated, rotary drilling pile foundation construction in modern construction engineering are increasingly being usedRotary drill is a key component of rotary drilling rig drilling operations in the major endurance, subject to rotary drilling rig actual working condition of the complexity of its supporting force drill pipe during drilling operations when it It becomes very complicated(compared to the friction drill pipe, drill machine lock more complex). Thus, the drill pipe failure also inevitable. Workers from the actual look, drill malfunction causing major damage in the form of drill pipe failure fatigue fracture and torsional deformation. Instability caused by the bending rod may occur in rare cases. Common are drill pipe twisted, broken, card rods with rod spline open welding, scroll key, off the drill and the like. Since the drill rotary drilling rig is a major power transmission means, so the economic losses caused by the failure of the drill is very large, which is the most terrible failures lead to tube rupture drilling wells pile bucket fall, if not to fall out of the drill salvage will result in all these piles of waste, but due to construction, the position of each pile are pre-calculated, each pile is a pillar of building endurance, if a pile of pile position has changed, this will make all pile bit to be recalculated, which will seriously affect the construction schedule of the project, drilling and fishing off the cost of manpower and material resources is also great, will greatly increase thecost of construction.This article is a combination of practical maintenance experience factory workers, the machine locking rotary drilling core drill rod and welding square head fracture caused by drilling out the three-dimensional solid modeling with multiple incidents on the drill pipe utilizing solid works carried out(in Beijing Ruo saddle billion Technology Co., Ltd. as an example of the drill) and treated with solid works simulation simulation stress concentration sites, find out the cause of breakage. On this basis, combined with experienced workers to design a drill fishing organization, and to analyze the reliability. Finally, the Notice also pale rotary drilling rig drill pipe welding. So as to guide the production, prevent drilling off, saving construction costs. Operability and economics of construction has practical features.