新型气液联合液压打桩锤动态过程的仿真研究.pdfVIP

　现代制造工程 2008年第 11期 设备设计 /诊断维修 /再制造 新型气液联合液压打桩锤动态过程的仿真研究 胡均平 ,史天亮 ,张灵 (中南大学机电工程学院 ,长沙 4 10083) 摘要 :液压打桩锤是一种新型的打桩设备 ,其动态性能的好坏直接影响打桩质量及打桩效率 ;根据其工作原理 、性能指标 和特性要求 ,运用 AM ESim 软件建立其液压系统仿真模型 ,并对其主要子模型的建模依据进行说明 ,运用 MA TLAB 软件 对液压缸缓冲部分进行优化设计 ,计算出相关参数 。对液压打桩锤的正常工作过程及其脱桩保护过程进行仿真研究 。 仿真结果表明该系统可以实现打击能的无级调节 ,冲击行程和频率等参数及脱桩保护结构均满足液压打桩锤的性能指 标和特性要求 ,说明该模型的建立比较准确 ,液压系统设计符合要求 。 关键词 :液压打桩锤 ;建模 ;仿真 ;动态过程 中图分类号 : TP391; TH 137　文献标识码 : A 　文章编号 : 167 1—3 133 (2008) 11—0124—04 S im ula tion research about the dynam ic processes of new type hydropneum a tic hydraulic p ile hamm er Hu Junp ing, Sh i Tianliang, Zhang L ing (Cen tral Sou th U n iversity, Changsha 4 10083, CHN ) A b stract:Hydrau lic p ile hamm er is a new typ e of p iling equ ipm ent. Its dynam ic cap ab ility ha s directly effect of the p iling quality and efficiency. A ccording to its work ing theory, cap ab ility target and character requ irem ent, bu ild the sim u lation model of hydrau lic system in AM ESim , exp lain ing the modeling warrant of its important submodel, and op tim izing the structu re of cylinder buffer on MA TLAB , then figuring ou t its correlative p aram eters. The norm al work ing p roce sse s and the p rotecting p roce sse swhen the p ile is doffed of the hydrau lic p ile hamm er were sim u lated and re searched. The re su lts indicate that the system can realize the step less adju sting of the energy, and the p aram eters such a s disp lacem en t of strike, the frequency and the p rotecting structu re can m eet the cap ab ility target and character requ irem en t. It show s the model is correct and its hydrau lic system fu lfills the requ irem en t.