液压支架支护和控制顶板

哈尔滨石油学院本科生毕业设计AbstractTo protect and control crest plank effectively,we have to design hydraulicsupports that belong to different types and different structure sizes.The designwork of hydraulic support is very important.Because it can raise laborproductivity greatly,broadly used in the modern mechanized mining face.This text simply introduces the characteristic of holding support,shieldsupport and holding-shield support.It explains generally the techniqueparameters,the structure characteristics,work principle and applications ofshield support.It also expounds the superiority of the four linkage bar.Firstly,it compares and analyses according to the given conditions,selectsa more reasonable program.Then according to work conditions,this designchooses and decides support's main parameters and the structure of all the partsof support and then selects the appropriate hydraulic system that it fits the support.In the accepting-strength analysis of support,Analysis mainly accepting-strengthstatus of roof beam,covering beam and the base.Structure sizes of allcomponents is decided according to accepting-strength status,and its intensity ischecked.The hydraulic supports this text designs whose stability is good,integrity isstrong and security is high.It meets the requests of safe production.key words Support structure strength shield