【作者】 姜文革；

【导师】 赵伟民；

【作者基本信息】 大庆石油学院 ， 安全技术及工程， 2008， 硕士

【摘要】 可调导板式液压抓斗作为重要的地下连续墙施工机械,广泛应用在各种深基础、防渗墙、挡土墙等基础施工当中。由于其工作载荷复杂多变,因此其机械性能、安全可靠性等备受关注。在开发具有独立知识产权的地下连续墙施工机械过程中,传统设计方法已经远远不能满足实际需要。随着计算机技术的迅猛发展,计算机辅助工程(CAE)技术己变得日趋成熟和高效,成为开发设计工作中的重要手段。本文在全面调研、综合分析国内外地下连续墙成墙装备与技术的基础上,针对可调导板式液压抓斗装置与控制机构,利用CAE仿真技术,通过进行运动学、动力学仿真分析,确定抓斗装置的危险工况,并据此进行了可调导板式液压抓斗装置与控制机构的结构强度分析、模态分析、稳定性分析等。全文主要从以下方面进行了阐述:首先,分析了连续墙抓斗的工作原理、结构特点以及国内外的发展概况。其次,对液压抓斗装置掘削抓取岩土的数学模型进行研究。再次,以三维软件SolidWorks为平台,创建可调导板式液压抓斗装置的三维模型。在多体动力学仿真软件COSMOS/Motin环境下,对掘削机构工作装置进行运动学和动力学仿真分析。以仿真结果为依据确定液压抓斗的最危险工况,以此工况下的载荷为边界条件,在COSMOS/Works环境下对抓斗装置进行有限元静强度分析计算和模态分析。最后,对可调导板式液压抓斗的控制机构进行安全可靠性分析,并对控制机构中的销轴和小齿轮进行疲劳强度校核,计算结果表明销轴和小齿轮的设计安全可靠。更多还原

【Abstract】 Adjustable guide hydraulic grab as very important diaphragm wall construction machinery, is widely used in a variety of deep foundation, impervious wall, retaining wall construction and other infrastructure. Because of its complex and changing work loads, its mechanical properties, such as security and reliability, receive much concern. In the process of the diaphragm wall construction machinery’s development which has the independent intellectual property rights, the traditional design methods can not fill the require of the actual needs. With the rapid development of computer technology, computer-aided engineering (CAE) technology has become increasingly mature and efficient, as in the development of design work an important means.In this paper comprehensive research and analysis of diaphragm wall at home and abroad, equipment and technology into the wall are carried out, aimed at adjustable guide hydraulic grab and control mechanism, use of CAE simulation technology, through kinematics and dynamics simulation analysis to determine the risk conditions of grab mechanism, accordingly, the analysis of modal structural strength, stability analysis of adjustable guide hydraulic grab and control mechanism are carried out.It is described in details from the following aspects:First, the working principle and the structural characteristics as well as domestic and international developments of the diaphragm wall grab are analyzed.Secondly, geotechnical excavation mathematical model of the mechanism of hydraulic grab is studied.Thirdly, taking the three-dimensional software to SolidWorks as a platform, we create the adjustable guide hydraulic grab devices 3D model. In COSMOS/Motin, multi-body dynamics simulation software, the works of digging cutting device kinematics and dynamics simulation analysis are analyzed. The most dangerous working conditions of hydraulic grab is ascertained according as the simulation results as the boundary conditions and the Grab devices Finite Element Analysis of static strength and modal analysis are carried out in COSMOS/Works environment.Finally, reliable analysis of adjustable guide hydraulic grab control mechanism is carried out, and then fatigue intensity of pin and pinion belonging to control mechanism is check-out. The result indicates the design of pin and pinion is safe and reliable.更多还原