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1、目 录第1章 前言 1第2章 概述 3第3章 设计中要考虑的问题和方案 4第4章 行星齿轮设计 8 4.1行星齿轮的特点 8 4.2行星齿轮的设计计算 9 4.3行星齿轮均载装置 18第5章 钻杆齿轮设计 20第6章 钻杆回转驱动齿轮设计 22第7章 钻具的设计 24第8章 主钻头的设计 27第9章 主轴的设计 299.1主轴的结构设计 299.2主轴的校核 30第10章 泥浆循环系统的设计 32设计总结 35 参考文献 36致谢 37附录138附录245摘要本次毕业设计完成了大直径桩基础工程成孔钻具I型钻具总体设计。设计内容包括行星齿轮传动部分的设计、钻具的设计、主轴的设计以及泥浆循环系统的
2、设计等几个主要部分。同时，本设计在AutoCAD的基础上，完成了该型钻具的总装图和绝大部分零件图的绘制。设计后的钻具配套功率小，既能够产生旋转运动又能产生冲击运动，且利用气举反循环排渣快速成孔。关键词：成孔钻具；行星运动；旋转冲击；气举反循环排渣ABSTRACTThe graduate design presents the collectivity design of I type drill hole machine,which can make a big diameter stake of substructure .The design contents include the ma
3、in parts of the following,which are the spread of the planet wheel gear,drill facility,the principal spindle and the slurry circle system.Besides, it has finished the assembly drawing of the drill machine and also most of its part drawings based on the AutoCAD.As a result,the drill machine with a sm
4、all power which not only could circumgrate movement, but also could impact movement,and could aliminate the dregs with air anti circulate. So it can quick drill the hole.Keywords: hole drill machine；planet movement；circumgyrateimpact；aliminate the dregs with air anti circulatetheir own conditions to
5、 develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packa
6、ging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business road the competition of alienation and characteristics, the pursuit of stability and development of the market.(four) t
7、o promote the integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations,
8、 strict inspection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengt
9、hen the construction management personnel. Strengthen the management of education and training of cadres and workers of the existing business, firmly establish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond
10、to market competition, improve management and operation of the market. At the same time, according to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promo
11、te the entire workforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. Serious research about social support the development of cultural undertakings
12、in the country and the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development.第1章 前言长期以来，桥梁、港口、码头、水工和工民建筑物的基础工程，在0.8米
13、以上2.0米以下常规直径桩基础成孔施工中，广泛使用冲击钻和回旋钻两种基本钻型，以及泥浆护壁正循环排渣方法施工。随着国内外桩基础工程机械的研究开发，为了适应各种工程地质条件施工，提高成孔施工效率，降低设备投入量和适应大直径桩基成孔需要，目前在传统的冲击钻和回旋钻的基础上，已生产出了如：重型冲击钻、连杆冲击反循环钻、套管钻机、潜孔冲击锤、潜水回旋钻、回转斗钻、短螺旋钻和扩底钻头等施工机械设备，大部分产品实现了反循环排渣，明显地提高了成孔施工效率，一般岩层成孔直径可达到2.5米左右，进口设备成孔直径已可达6米。其中结构简单的国产重型冲击钻成孔直径也可达3.0米。但是仍然存在着种种不适应施工需要的问题
14、，主要是：1、普通回旋成孔钻，对工程地质条件变化的适应性差，特别是不适应大砾石地质和无风化硬岩层成孔，地质适应范围受限。2、一般冲击钻虽然地质适应性好，但施工效率显低，同时大直径的重型冲击锤自旋性差，成孔失圆度大。3、设备和钻具通用和互换性差，即一种设备只能配套相应钻具。一种规格的钻具，只能适用于相应直径的成孔。4、国内大直径的钻具设备研发，少有研究采用新的运动原理和结构，一般只能采取加大直径，增加配套功率和扭矩，以及选用高硬刃具材料等办法，因而有趋向高功率配置和笨重方向发展的趋势，不仅固有的弱点问题没有解决，而且又更加大了施工设备投资，影响工程建设效益。如：湖南省道1804线周家店至常德公路改建工程，在柳叶湖大桥四根3.0米直径桩基础施工中，由于施工成本的原因，第一个枯水施工季节，没有进场大直径成孔设备，施工单位采取沉井明挖法施工失败。在第二个枯水施工季节，终于以60多万的价格，新购置到重型冲击钻机设备，开始进行返工施工。韶关产冲击锤重达13吨，配套设备均是个别设计生产，使用直径4.5公分钢丝绳。由于锤重绳粗，常规的设备匹配和连接方式，在这“重型”面前显得非常脆弱，出现了每两个工作班
