YY44102342型掩护式液压支架的设计.doc

PAGEivPAGEI摘要本论文主要阐述了一般掩护式液压支架的设计过程。设计内容包括：选架型、总体设计、主要零部件的设计、主要零部件的校核和液压系统的设计。由于该煤层厚度适中，选用掩护式液压支架。煤层厚度介于2.5～3.8m之间，煤层厚度变化较大，选用调高范围大且抗水平推力强且带护帮装置的掩护式支架。支架采用正四连杆机构，以改善支架受力状况。顶梁、掩护梁、底座均做成箱体结构；立柱采用双伸缩作用液压缸，以增加工作行程来满足支架调高范围的需要。推移千斤顶采用框架结构，以减少推溜力和增大移架力。为了提高移架速度，确保对顶板的及时支护，采用锥阀液压系统。关键词：液压支架四连杆机构推溜移架ABSTRACTThearticlemainlyelaboratedthegeneralshieldtypehydraulicpressuresupportdesignprocess.Thedesigncontentincludes:Chooses,thesystemdesign,themainsparepartdesign,themainsparepartexaminationandthehydraulicsystemdesign.Becausethiscoalbedthicknessismoderate,selectstheshieldtypehydraulicpressuresupport.Coalbedthicknessissituatedbetweenbetweenthe2.5~3.8rice,coalbedthicknesschangebigger,selectsadjuststhehighscopebigalsotheanti-horizontalthrustisstrongalsothebeltprotectshelpstheequipmenttheshieldtypesupport.Thesupportusesthefourlinkmotiongear,improvesthesupportstresscondition.Thetop-beam,cavingshield,thefoundationmakesthepackedinaboxbodystructure;Thecolumnusesthedoubleexpansionandcontractionfunctionhydrauliccylinder,increasesthepowerstroketosatisfythesupporttoadjustthehighscopetheneed.Passesthehoistingjacktousetheportalframeconstruction,reducespushesslidesthestrengthandincreasesmovesastrength.Inordertoenhancemovesaspeed,guaranteesisprompttotheroofsupport,usesthemushroomvalvehydraulicsystem.Keyword:Thehydraulicpressuresupport,four-linkmechanism,supportshapingpushforwardstheconveyer,advancingthepoweredsupport.目录TOC\o"1-2"\h\z\uHYPERLINK\l"_Toc229404577"摘要PAGEREF_Toc229404577\hiHYPERLINK\l"_Toc229404578"ABSTRACTPAGEREF_Toc229404578\hiiHYPERLINK\l"_Toc229404579"1概述PAGEREF_Toc229404579\h1HYPERLINK\l"_Toc229404580"1.1液压支架的组成和分类PAGEREF_Toc229404580\h1HYPERLINK\l"_Toc229404581"1.2液压支架的工作原理PAGEREF_Toc229404581\h3HYPERLINK\l"_Toc229404582"1.3液压支架的支护方式PAGEREF_Toc229404582\h6HYPERLINK\l"_Toc229404583"1.4支架选型的基本参数PAGEREF_Toc229404583\h6HYPERLINK\l"_Toc229404584"2.液压支架的总体设计PAGEREF_Toc229404584\h8HYPERLINK\l"_Toc229404585"2.1液压