2022年压力机液压系统.docx
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1、精选学习资料 - - - - - - - - - eaintheacci denti i nvestigation,managementandreporting,ea chpostshouldbe devel opedunderthissystemspecialistsche ck,cl eartheexaminations,time,cyclesa ndotherrelevantregulations.Strengthe ningsitesupervisiona ndexamination,todetectandinvestigateillegalcommand,illegaloperati
2、onsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equi pment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingi sdivi dedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecom
3、panysproblems.B-cla ss:difficulttoresolvedif目 录一 液压系统原理设计 11 工况分析 1 2 拟定液压系统原理图 4 二 液压缸的设计与运算 6 1 液压缸主要尺寸的确定 6 2 液压缸的设计 7 三 液压系统运算与挑选液压元件 101 运算在各工作阶段液压缸所需的流量 10 2 确定液压泵的流量 , 压力和挑选泵的规格 10 3 液压阀的挑选 12 4 确定管道尺寸 2 液压缸的设计 12 5 液压油箱容积的确定 12 6 液压系统的验算 12 7 系统的温升验算 15 8 联接螺栓强度运算 16 四 设计心得 17 五 参考文献 17 ficu
4、lties,shall consistofmini ngorganizationstosolve probl ems.C-cla ss:fromsegmentsa ndbusine ssriskst hatmustbeaddresse dint heDe partment.2,open-pitmine unsafetypesi ncl ude :ele ctrical,transport,blasti ng,fire,a ndothersl ope.3,a ccordingt othesev erityoftheha zardfille dinbyunittroubl eshooti ng,r
5、egistra tionformseeatt名师归纳总结 - - - - - - -第 1 页,共 14 页精选学习资料 - - - - - - - - - eaintheacci denti i nvestigation,managementandreporting,ea chpostshouldbe devel opedunderthissystemspecialistsche ck,cl eartheexaminations,time,cyclesa ndotherrelevantregulations.Strengthe ningsitesupervisiona ndexaminati
6、on,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equi pment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingi sdivi dedintoa,b,andclevelsofdifficulty;A-leve
7、l:difficult,miningdifficulties,shallbereportedtothecompanysproblems.B-cla ss:difficulttoresolvedif一 液压系统原理设计1 工况分析设计一台小型液压压力机的液压系统,要求实现:快速空程下行慢速加压保 压 快 速 回 程 停 止 工 作 循 环 ; 快 速 往 返 速 度 为 3m/min , 加 压 速 度 为40-250mm/min,压制力为 N,运动部件总重力为 垂直安装,设计压力机的液压传动系统;液压缸所受外负载 F 包括五种类型,即:25000N,工作行程 400mm,油缸F= F压 + F
8、磨 +F惯+F密+G式中:F 压- 工作负载,对于液压机来说,即为压制力;F惯- 运动部件速度变化时的惯性负载;F磨- 导轨摩擦阻力负载,启动时为静摩擦阻力;液压缸垂直安装,摩擦力 相对于运动部件自重,可忽视不计;F密- 由于液压缸密封所造成的运动阻力;G- 运动部件自重;液压缸各种外负载值1 工作负载:液压机压制力 F 压=N 2 惯性负载:F惯GV25000.325510.20Ngt9 .8033 运动部件自重:G=25000N 4 密封阻力 F密=0.1F F 为总的负载 5 摩擦力 液压缸垂直安装,摩擦力较小,可忽视不计;ficulties,shallconsistofminingor
9、ganizationstosolveproblems.C-cla ss:fromsegmentsandbusinessriskst hatmustbeaddressedintheDe partment.2,open-pitmineunsafetypesincl ude :ele ctrical,transport,blasting,fire,andotherslope.3,accordingtothesev erityofthehazardfilledinbyunittroubleshooting,registrationformseeatt名师归纳总结 - - - - - - -第 2 页,
10、共 14 页精选学习资料 - - - - - - - - - eaintheacci dentinvestigation,managementandreporting,ea chpostshoul dbe developedunderthissystemspecialistscheck,cleartheexaminatons,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisiona ndexamination,todete ctandinvestigateillegalcommand,i llegaloperati
11、onsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equi pment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingi sdivi dedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecom
12、panysproblems.B-class:difficulttoresolvedif依据上述运算结果,列出各工作阶段所受的外负载;工作循环各阶段外负载表工况运算公式液压缸的负载启动阶段:F 启=F密+F惯-GF 启F 惯9G25510.2025000566.89N0 .0.9加速阶段:F 加=F密+F惯-GF加F惯.9G25510.2025000566. 89N00.9快进阶段:F快=F密-GF 工F快0.9G22500NF 压9G300000.925000305555. 56N工进阶段:F工=F密+F压-G0 .0快退阶段:F退=F密+GF 退G2500027777. 78N0.90.9依
13、据给定要求与外负载表绘制速度循环图与负载循环图:速度循环图:ficulties,shallconsistofminingorganizationstosolveprobl ems.C-class:fromsegmentsandbusinessrisksthatmustbeaddressedint heDepartment.2,open-pitmineunsafetypesincl ude:electrical,transport,blasting,fire,andotherslope.3,accordingtotheseverityofthehazardfilledinbyunittroubl
14、eshooti ng,registrationformseeatt名师归纳总结 - - - - - - -第 3 页,共 14 页精选学习资料 - - - - - - - - - eaintheacci denti i nvestigation,managementandreporting,ea chpostshouldbe devel opedunderthissystemspecialistsche ck,cl eartheexaminations,time,cyclesa ndotherrelevantregulations.Strengthe ningsitesupervisiona
15、ndexamination,todetectandinvestigateillegalcommand,illegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equi pment,facilities,andsooncanleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingi sdivi dedintoa,b,andclevelsofdiffic
16、ulty;A-level:difficult,miningdifficulties,shallbereportedtothecompanysproblems.B-cla ss:difficulttoresolvedifV mm/s 50 0.674.17 Lmm 400 50 负载循环图:ficulties,shallconsistofminingorganizationstosolveproblems.C-cla ss:fromsegmentsandbusinessriskst hatmustbeaddressedintheDe partment.2,open-pitmineunsafety
17、pesincl ude :ele ctrical,transport,blasting,fire,andotherslope.3,accordingtothesev erityofthehazardfilledinbyunittroubleshooting,registrationformseeatt名师归纳总结 - - - - - - -第 4 页,共 14 页精选学习资料 - - - - - - - - - eaintheacci dentinvestigation,managementandreporting,ea chpostshoul dbe developedunderthissy
18、stemspecialistscheck,cleartheexaminatons,time,cyclesandotherrelevantregulations.Strengtheningsitesupervisiona ndexamination,todete ctandinvestigateillegalcommand,i llegaloperationsandviolationsofoperatingrules.Secondsafetyreferstotheproductionsite,technologymanagement,equi pment,facilities,andsoonca
19、nleadtoaccidentsrisksexist.1,accordingtotheextentofthesecurityrisks,solvingi sdivi dedintoa,b,andclevelsofdifficulty;A-level:difficult,miningdifficulties,shallbereportedtothecompanysproblems.B-class:difficulttoresolvedifFN 566 22500 400 Lmm 2 拟定液压系统原理图1 确定供油方式:考虑到该压力机在工作进给时需要承担较大的工作压力,系统功率较大,速度较底;而在
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